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Metalworking Machinery

Well-maintained machines from top brands - for industry & craft 184 Machines
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DALLAN LV DUPLEX 8+8 Duplex Roll Forming Line for the Production of Cofferings & Panels
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Dimensions (l x w x h) approx.: 10,000 x 2,000 x 1,500 mm
Year of manufacture: 1996
Weight approx.: 15,000 kg
Machine available from: immediately
Delivery terms: FCA Falisolle, loaded on truck
Falisolle Belgium, 5060 Falisolle
04/06/2020 09:14
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22,500€
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OEM VMC550L CNC Milling Machine Milling Machines
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Dimensions (l x w x h) approx.: 2,200 x 1,750 x 2,300 mm
Year of manufacture: 2015
Weight approx.: 3,100 kg
Machine available from: immediately
Delivery terms: FCA Limbourg, loaded on truck
Limbourg Belgium, 4830 Limbourg
04/06/2020 09:01
2 Bids
7,150€
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VOGEL & SCHEMMANN Sandblasting Cabin Blasting Machines and Systems
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Dimensions (l x w x h) approx.: 10,000 x 1,000 x 4,000 mm
Machine available from: immediately
Delivery terms: FCA Falisolle, loaded on truck
Falisolle Belgium, 5060 Falisolle
04/06/2020 09:10
0 Bids
4,000€
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INNOCENTI FAF 305/200 CWB Floor Type Boring Mill
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INNOCENTI FAF 305/200 CWB Floor Type Boring Mill Floor Type Boring Mills
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Year of manufacture: 1960
Weight approx.: 550,000 kg
Machine available from: immediately
Delivery terms: FCA Naestved, loaded on truck
Naestved Denmark, DK - 4700 Naestved
03/06/2020 11:37
0 Bids
60,000€
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HOCHSTRATE 3500 x 15 Swivel Bending Machine Swivel Bending Machines
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Dimensions (l x w x h) approx.: 6,000 x 3,200 x 3,000 mm
Year of manufacture: 2007
Weight approx.: 16,000 kg
Machine available from: immediately
Delivery terms: FCA Naestved, loaded on truck
Naestved Denmark, DK - 4700 Naestved
03/06/2020 11:36
0 Bids
25,000€
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INDOP, ILR NG PS Hydraulic Pressing Line
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INDOP, ILR NG PS Hydraulic Pressing Line Hydraulic Presses
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Dimensions (l x w x h) approx.: 35,000 x 6,500 x 4,000 mm
Year of manufacture: 2003
Weight approx.: 260,000 kg
Machine available from: immediately
Delivery terms: FCA Velenje, loaded on truck
Velenje Slovenia, 3320 Velenje
02/06/2020 10:07
0 Bids
80,000€
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BYSTRONIC Xpert 40/1030 Press Brake + Mobile Bending Robot Robotic Cell
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Dimensions (l x w x h) approx.: 400 x 200 x 222 mm
Year of manufacture: 2018
Weight approx.: 5,800 kg
Machine available from: immediately
Delivery terms: FCA Nagykanizsa, loaded on truck
Nagykanizsa Hungary, 8800 Nagykanizsa
24/06/2020 13:00
0 Bids
80,000€
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DORRIES VCE 3500/300 Vertical Lathe
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DORRIES VCE 3500/300 Vertical Lathe Vertical Lathes
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Dimensions (l x w x h) approx.: 10,000 x 8,000 x 6,100 mm
Year of manufacture: 1992
Weight approx.: 65,000 kg
Machine available from: immediately
Delivery terms: FCA Augsburg, loaded on truck
Augsburg Germany, 86159 Augsburg
02/06/2020 10:49
0 Bids
59,500€
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EMCO EMCOTURN E 65 Automatic Bar Lathe
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EMCO EMCOTURN E 65 Automatic Bar Lathe Automatic Bar Lathes
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Dimensions (l x w x h) approx.: 10,000 x 2,500 x 2,200 mm
Year of manufacture: 2018
Weight approx.: 9,500 kg
Machine available from: immediately
Delivery terms: FCA Budapest, loaded on truck
Budapest Hungary, 1096 Budapest
16/06/2020 09:01
0 Bids
55,000€
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EMCO HYPERTURN 45 CNC Sliding Headstock Automatic Lathe
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Dimensions (l x w x h) approx.: 9,000 x 1,500 x 2,300 mm
Year of manufacture: 2012
Weight approx.: 7,000 kg
Machine available from: immediately
Delivery terms: FCA Budapest, loaded on truck
Budapest Hungary, 1096 Budapest
16/06/2020 09:04
0 Bids
40,000€
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AMADA ASTRO 100NT CELL 5-axis robotic press brake cell
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Dimensions (l x w x h) approx.: 15,000 x 6,000 x 2,400 mm
Year of manufacture: 2008
Weight approx.: 8,000 kg
Machine available from: immediately
Delivery terms: EXW Vallgorguina, ex foundation, unpackaged
Vallgorguina Spain, 08471 Vallgorguina
09/06/2020 11:14
6 Bids
44,000€
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HMP MÜLLER UR 8-4-DD-55 H-CNC-AU-1 Rotary Swaging Machine Sheet Metal Processing
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Dimensions (l x w x h) approx.: 11,000 x 3,000 x 3,000 mm
Year of manufacture: 2008
Weight approx.: 15,000 kg
Machine available from: immediately
Delivery terms: FCA Chemnitz, loaded on truck
Chemnitz Germany, 09125 Chemnitz
04/06/2020 09:16
0 Bids
40,000€
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TSCHUDIN Ecoline 400 CNC Cylindrical Askew Grinding Machine with KUKA Robot KR 6 R900 sixx
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Dimensions (l x w x h) approx.: 2,300 x 2,400 x 2,600 mm
Year of manufacture: 2007
Weight approx.: 5,500 kg
Machine available from: immediately
Delivery terms: FCA Ciechanów, loaded on truck
Ciechanów Poland, 06-400 Ciechanów
02/06/2020 10:06
0 Bids
40,000€
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EMCO HYPERTURN 45 CNC sliding headstock automatic lathe
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Dimensions (l x w x h) approx.: 9,400 x 2,000 x 2,400 mm
Year of manufacture: 2011
Weight approx.: 6,500 kg
Machine available from: immediately
Delivery terms: FCA Budapest, loaded on truck
Budapest Hungary, 1096 Budapest
16/06/2020 09:06
0 Bids
39,000€
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OPS-INGERSOLL G800-OPS650 Mould Centre
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OPS-INGERSOLL G800-OPS650 Mould Centre CNC Machining Centres
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Year of manufacture: 2006
Machine available from: immediately
Delivery terms: FCA Olching, loaded on truck
Olching Germany, 82140 Olching
03/06/2020 10:05
0 Bids
34,500€
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TORNOS DECO 20 S CNC sliding headstock automatic lathe
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Dimensions (l x w x h) approx.: 7,400 x 1,700 x 2,500 mm
Year of manufacture: 2006
Weight approx.: 6,500 kg
Machine available from: immediately
Delivery terms: FCA Budapest, loaded on truck
Budapest Hungary, 1096 Budapest
16/06/2020 09:09
0 Bids
29,000€
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MORARA EMATIC 3000 CNC E 14 Cylindrical Grinder
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MORARA EMATIC 3000 CNC E 14 Cylindrical Grinder Cylindrical Grinders
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Dimensions (l x w x h) approx.: 10,100 x 4,700 x 2,660 mm
Year of manufacture: 1993
Weight approx.: 11,500 kg
Machine available from: immediately
Delivery terms: FCA Karlstadt am Main, loaded on truck
Karlstadt am Main Germany, 97753 Karlstadt am Main
02/06/2020 10:47
1 Bid
28,000€
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SIEMPELKAMP 1250 Hydraulic IHF-Press Hydraulic Presses
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Dimensions (l x w x h) approx.: 3,000 x 8,000 x 8,000 mm
Year of manufacture: 1999
Weight approx.: 100,000 kg
Machine available from: immediately
Delivery terms: FCA Chemnitz, loaded on truck
Chemnitz Germany, 09125 Chemnitz
04/06/2020 09:03
0 Bids
25,000€
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EMCO TURN 420 MC PLUS CNC sliding headstock automatic lathe
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Dimensions (l x w x h) approx.: 9,900 x 1,900 x 2,400 mm
Year of manufacture: 2005
Weight approx.: 6,500 kg
Machine available from: immediately
Delivery terms: FCA Budapest, loaded on truck
Budapest Hungary, 1096 Budapest
16/06/2020 09:15
0 Bids
24,000€
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EMCO TURN 420 MC PLUS CNC sliding headstock automatic lathe
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Dimensions (l x w x h) approx.: 9,800 x 2,000 x 2,200 mm
Year of manufacture: 2005
Weight approx.: 4,500 kg
Machine available from: immediately
Delivery terms: FCA Budapest, loaded on truck
Budapest Hungary, 1096 Budapest
16/06/2020 09:11
0 Bids
24,000€
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EMCO TURN 420 MC CNC Sliding Headstock Automatic Lathe
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Dimensions (l x w x h) approx.: 10,200 x 1,800 x 2,300 mm
Year of manufacture: 2001
Weight approx.: 3,800 kg
Machine available from: immediately
Delivery terms: FCA Budapest, loaded on truck
Budapest Hungary, 1096 Budapest
16/06/2020 09:14
0 Bids
16,000€
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CASTEL 2 N Table-Type Boring Mill
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CASTEL 2 N Table-Type Boring Mill Horizontal Boring Mills
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Dimensions (l x w x h) approx.: 7,200 x 6,500 x 3,400 mm
Year of manufacture: 1986/2005
Weight approx.: 14,000 kg
Machine available from: immediately
Delivery terms: FCA Rellingen, loaded on truck
Rellingen Germany, 25462 Rellingen
03/06/2020 10:48
0 Bids
16,000€
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ECKERT DIAMENT 1500x3000 Laser Cutting Machine
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ECKERT DIAMENT 1500x3000 Laser Cutting Machine Laser Cutting Machines
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Dimensions (l x w x h) approx.: 9,500 x 3,500 x 2,400 mm
Year of manufacture: 2008
Weight approx.: 7,000 kg
Machine available from: immediately
Delivery terms: FCA Legnica, loaded on truck
Legnica Poland, 59-220 Legnica
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GOODWAY GS-260 LMYS CNC Rotation Centre
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Dimensions (l x w x h) approx.: 7,500 x 2,300 x 2,350 mm
Year of manufacture: 2007
Weight approx.: 8,500 kg
Machine available from: immediately
Delivery terms: FCA Moers, loaded on truck
Moers Germany, 47443 Moers
25/06/2020 14:00
1 Bid
15,000€
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KONDIA HM -1060 CNC Machining Centre
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KONDIA HM -1060 CNC Machining Centre CNC Machining Centres
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Dimensions (l x w x h) approx.: 4,000 x 2,300 x 2,825 mm
Year of manufacture: 2011
Weight approx.: 6,000 kg
Machine available from: immediately
Delivery terms: FCA Weilheim Teck, loaded on truck
Weilheim Teck Germany, 73235 Weilheim Teck
23/06/2020 15:41
0 Bids
15,000€
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BOEHRINGER NG 200-2 CNC Lathe CNC Lathes
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Dimensions (l x w x h) approx.: 6,000 x 2,400 x 2,600 mm
Year of manufacture: 2004
Weight approx.: 10,000 kg
Machine available from: immediately
Delivery terms: FCA Freilassing, free on truck
Freilassing Germany, 83395 Freilassing
03/06/2020 11:47
0 Bids
15,000€
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AMADA SEB 80-30 CNC Press Brake
AMADA SEB 80-30 CNC Press Brake Press Brakes
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Dimensions (l x w x h) approx.: 4,500 x 2,000 x 2,400 mm
Year of manufacture: 2000
Weight approx.: 7,500 kg
Machine available from: immediately
Delivery terms: FCA Vallgorguina, loaded on truck
Vallgorguina Spain, 08471 Vallgorguina
09/06/2020 11:29
0 Bids
15,000€
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GILDEMEISTER MSL 60-7 Automatic CNC Lathe
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Dimensions (l x w x h) approx.: 2,500 x 1,500 x 2,000 mm
Year of manufacture: 2009
Weight approx.: 3,500 kg
Machine available from: immediately
Delivery terms: FCA Weilheim Teck, loaded on truck
Weilheim Teck Germany, 73235 Weilheim Teck
23/06/2020 15:48
0 Bids
15,000€
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TRAUB TNK 36 CNC Lathe CNC Lathes
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Top lot
Dimensions (l x w x h) approx.: 7,000 x 4,000 x 2,900 mm
Year of manufacture: 2001
Weight approx.: 5,000 kg
Machine available from: immediately
Delivery terms: FCA Olching, loaded on truck
Olching Germany, 82140 Olching
03/06/2020 10:03
1 Bid
14,500€
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SPINNER VC 750 Machining Centre CNC Machining Centres
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Dimensions (l x w x h) approx.: 2,700 x 2,500 x 2,500 mm
Year of manufacture: 2011
Weight approx.: 4,000 kg
Machine available from: immediately
Delivery terms: FCA Wülfrath, loaded on truck
Wülfrath Germany, 42489 Wülfrath
03/06/2020 10:53
2 Bids
15,000€
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BOEHRINGER NG 200-2/2G CNC Lathe CNC Lathes
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Dimensions (l x w x h) approx.: 6,500 x 3,000 x 2,750 mm
Year of manufacture: 2006
Weight approx.: 10,000 kg
Machine available from: immediately
Delivery terms: FCA Olching, loaded on truck
Olching Germany, 82140 Olching
03/06/2020 10:52
2 Bids
15,000€
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MAZAK FF 660 Horizontal Machining Centre Horizontal Machining Centres
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Top lot
Dimensions (l x w x h) approx.: 4,800 x 2,700 x 2,800 mm
Year of manufacture: 2000
Weight approx.: 9,250 kg
Machine available from: immediately
Delivery terms: FCA Dieburg, loaded on truck
Dieburg Germany, 64807 Dieburg
03/06/2020 11:30
3 Bids
14,500€
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SCHNEEBERGER ARIES-NC 4 Tool Grinding Machine
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SCHNEEBERGER ARIES-NC 4 Tool Grinding Machine Tool Grinding Machines
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Top lot
Dimensions (l x w x h) approx.: 1,800 x 2,000 x 2,000 mm
Year of manufacture: 1998
Weight approx.: 1,900 kg
Machine available from: immediatly
Delivery terms: FCA La Chaux-de-Fonds, loaded on truck
La Chaux-de-Fonds Switzerland, 2300 La Chaux-de-Fonds
18/06/2020 12:09
0 Bids
11,000€
DOOSAN S 550 L CNC lathe CNC Lathes
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Top lot
Dimensions (l x w x h) approx.: 2,300 x 3,500 x 2,400 mm
Year of manufacture: 2002
Weight approx.: 8,000 kg
Machine available from: immediately
Delivery terms: FCA Wülfrath, loaded on truck
Wülfrath Germany, 42489 Wülfrath
03/06/2020 09:57
6 Bids
13,500€
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MAZAK Super Turbo-X 48 Mk II Laser Cutting Machine
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MAZAK Super Turbo-X 48 Mk II Laser Cutting Machine Laser Cutting Machines
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Hot lot
Dimensions (l x w x h) approx.: 7,000 x 2,600 x 2,200 mm
Year of manufacture: 2003
Weight approx.: 13,000 kg
Machine available from: immediatly
Delivery terms: FCA Korschenbroich, loaded on truck
Korschenbroich Germany, 41352 Korschenbroich
03/06/2020 10:00
22 Bids
21,000€
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IMET X_TECH 410 FASCI Metal Horizontal Band Saw Metal Horizontal Band Saws
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Top lot
Dimensions (l x w x h) approx.: 3,500 x 1,970 x 2,120 mm
Year of manufacture: 2011
Weight approx.: 3,450 kg
Machine available from: immediately
Delivery terms: FCA Mikołów, free on truck
Mikołów Poland, 43-190 Mikołów
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STAR ECAS 32 T CNC Lathe CNC Lathes
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Top lot
Dimensions (l x w x h) approx.: 3,200 x 1,800 x 1,900 mm
Year of manufacture: 2005
Weight approx.: 5,700 kg
Machine available from: immediatly
Delivery terms: FCA Le Locle, loaded on truck
Le Locle Switzerland, 2400 Le Locle
18/06/2020 11:29
0 Bids
10,000€
INGERSOLL GANTRY 800 EDM (Electrical Discharge Machine) EDM (Electrical Discharge Machining)
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Top lot
Dimensions (l x w x h) approx.: 2,650 x 1,620 x 2,705 mm
Year of manufacture: 1997
Weight approx.: 7,000 kg
Machine available from: immediately
Delivery terms: FCA Greding, loaded on truck
Greding Germany, 91171 Greding
17/06/2020 10:03
0 Bids
10,000€
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HÜLLER HILLE NBH 170 Horizontal Machining Centre Horizontal Machining Centres
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Top lot
Dimensions (l x w x h) approx.: 12,000 x 4,600 x 3,530 mm
Year of manufacture: 1998
Weight approx.: 29,000 kg
Machine available from: immediately
Delivery terms: FCA Korschenbroich, loaded on truck
Korschenbroich Germany, 41352 Korschenbroich
01/07/2020 10:00
0 Bids
10,000€
OKUMA LB 200-W CNC Lathe
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OKUMA LB 200-W CNC Lathe CNC Lathes
Top lot
Top lot
Dimensions (l x w x h) approx.: 6,000 x 2,000 x 1,800 mm
Year of manufacture: 2000
Weight approx.: 5,500 kg
Machine available from: immediately
Delivery terms: FCA Moers, loaded on truck
Moers Germany, 47443 Moers
25/06/2020 15:38
1 Bid
9,900€
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CHIRON DZ 18 W Vertical CNC Double Spindle Centre
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CHIRON DZ 18 W Vertical CNC Double Spindle Centre CNC Machining Centres
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Top lot
Dimensions (l x w x h) approx.: 4,500 x 3,700 x 3,000 mm
Year of manufacture: 2009
Weight approx.: 8,000 kg
Machine available from: immediately
Delivery terms: FCA Weilheim Teck, loaded on truck
Weilheim Teck Germany, 73235 Weilheim Teck
23/06/2020 14:09
1 Bid
9,500€
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HAAS MDC 500 HE CNC Drilling and Milling Centre
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HAAS MDC 500 HE CNC Drilling and Milling Centre CNC Machining Centres
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Top lot
Dimensions (l x w x h) approx.: 3,600 x 2,600 x 2,800 mm
Year of manufacture: 2006
Weight approx.: 6,300 kg
Machine available from: immediately
Delivery terms: FCA Schwäbisch Gmünd, loaded on truck
Schwäbisch Gmü… Germany, 73529 Schwäbisch Gmünd
23/06/2020 14:58
0 Bids
9,500€
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ULTRASONIC 6302SD-GD014 Vibration Welder
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ULTRASONIC 6302SD-GD014 Vibration Welder Welding Machines (stationary)
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Dimensions (l x w x h) approx.: 2,620 x 1,110 x 2,345 mm
Year of manufacture: 2017
Weight approx.: 3,800 kg
Machine available from: immediately
Delivery terms: FCA Bażanowice, free on truck
Bażanowice Poland, 43-440 Bażanowice
02/06/2020 10:00
1 Bid
9,000€
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FINN POWER A4 - 20FB Punching Press
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FINN POWER A4 - 20FB Punching Press Punching Machines
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Dimensions (l x w x h) approx.: 4,900 x 5,100 x 2,500 mm
Year of manufacture: 1999
Weight approx.: 10,000 kg
Machine available from: immediately
Delivery terms: FCA Timisoara, loaded on truck
Timisoara Romania, 300538 Timisoara
02/06/2020 10:05
4 Bids
9,400€
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C.B. FERRARI A15 5-Axis Machining Centre
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C.B. FERRARI A15 5-Axis Machining Centre CNC Machining Centres
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Dimensions (l x w x h) approx.: 3,000 x 3,300 x 2,600 mm
Weight approx.: 5,200 kg
Machine available from: Immediately
Delivery terms: FCA Montesilvano, loaded on truck
Montesilvano Italy, 65015 Montesilvano
04/06/2020 10:07
0 Bids
8,500€
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AMADA AG 3004 Hydraulic guillotine shear
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AMADA AG 3004 Hydraulic guillotine shear Guillotine Shears
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Dimensions (l x w x h) approx.: 4,000 x 3,000 x 1,800 mm
Year of manufacture: 1999
Weight approx.: 5,500 kg
Machine available from: immediately
Delivery terms: FCA Vallgorguina, loaded on truck
Vallgorguina Spain, 08471 Vallgorguina
09/06/2020 11:54
0 Bids
8,000€
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AMADA SEB 50-20 CNC Press Brake
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AMADA SEB 50-20 CNC Press Brake Press Brakes
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Top lot
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Dimensions (l x w x h) approx.: 3,500 x 2,000 x 2,400 mm
Year of manufacture: 1999
Weight approx.: 4,500 kg
Machine available from: immediately
Delivery terms: FCA Vallgorguina, loaded on truck
Vallgorguina Spain, 08471 Vallgorguina
09/06/2020 11:19
0 Bids
8,000€
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OPUS 800 TMH/R Vertical Cutting Saw
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OPUS 800 TMH/R Vertical Cutting Saw Metal Cutting Machines
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Top lot
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Dimensions (l x w x h) approx.: 3,500 x 5,000 x 4,200 mm
Year of manufacture: 2001
Weight approx.: 5,000 kg
Machine available from: Immediately
Delivery terms: FCA Montesilvano, loaded on truck
Montesilvano Italy, 65015 Montesilvano
04/06/2020 10:08
0 Bids
7,500€
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Definition: Metalworking Machinery

Metalworking business complexity is reflected in the great diverity of second hand metalworking machinery. There is a suitable used machine for each procedure: die casting machines and kilns for prototype-forming; presses, guillotine shears and forging machines for shaping; milling machines, drilling machines and lathes for machining; laser cutting machines for tool-free separating; welding machines for joining; machinery for surface treatment; measuring and testing machines for precision checks. You will find these and many more machines from leading manufacturers among our auctions at Surplex. Get high quality at fair prices!

Used metalworking machines for industrial use

  1. Index
  2. Metals for modern products
  3. Metal industry sectors and machinery types
    1. Prototype-forming by casting and pressure casting
    2. Shaping of metals
    3. Separating processes
    4. Cutting metals without tools
    5. Metal joining
    6. Metal surface treatment
    7. Precision checks by measuring and testing machines
  4. What do I need to know when buying metalworking equipment?
    1. Lifespan of metalworking machinery
    2. Buying second-hand
    3. Inspecting metalwork machinery
    4. Maintaining and repairing metal-working machines
  5. Well-known manufacturers of metalwork machines

Metals for modern products

The processing of metals is one of the most important achievement of the human race. Metal’s diverse features make its possible uses almost limitless – there is hardly a product on the market that can be made without the use of metallic components. Getting the metal into the desired shape requires specialist machinery, of which there is a wide selection. Once mined from the earth, the metal can be melted and reshaped as many times as is needed to create new products.

Metal industry sectors and machinery types

Prototype-forming by casting and pressure casting

Metal is extracted from ore in the smelter and cast into slabs in the smelting plant. This area of metal processing is called prototyping and it involves shaping the metal without the use of machining techniques. This process is primarily of interest to the semi-finished product industry. Pressure die casting machines and cast iron plants, on the other hand, directly process the metals from the smelting plant into the final products. Foundry machines include furnaces, pans, continuous casting machines and extrusion machines, using which profiles and semi-finished products are manufactured.

Shaping of metals

After creating a metal prototype, the metal is rolled and processed into blocks, slabs or strips. These are the first steps in the shaping process. The metal is then transformed from one shape to other by pressing, rolling, bending, folding or forging, using a machine designed for each step.

  • Rollers are used in steelworks and sheet metal processing operations to straighten and assemble thin sheets
  • Presses can form a wide variety of final products from the metal blanks provided
  • Folding presses fold metal sheets into the desired angle
  • Forging presses are used for especially large-scale, solid workpieces. They are often used to prepare components that will be subjected to large forces/strain

Forging produces especially hard and resilient products. In order to forge more complex workpieces, such as crankshafts, it is often the case that several forging tools are used one after the other. These then shape the workpiece to the desired form through incremental steps.

These shaping processes, however, do not alter the mass of the metal, but this is not the case in most metalworking procedures. Press brakes, shearing machines and general presses are known as sheet metal processing machines.

Separating processes

Separating processes include the machining of workpieces using the following machines:

The simplest ‘dividing machines’ in the metal industry are sheet metal cutters and shearing machines, which cut the sheet metal provided in one linear direction.

Punching and notching machines can then be used to punch out predefined sections of the blank.

When it comes to fine machining, CNC milling machines are the number one choice. They can machine metal blocks in any way needed and can manufacture highly complex contours.

Lathes, on the other hand, are used for producing rotationally-symmetric turned parts. Mills and lathes belong to the field of machining.

The highest-quality CNC mills are machining centres. They can perform both manufacturing processes with excellent repeat accuracy and consistent quality. CNC machining centres are some of the most complex, state-of-the-art and expensive machines in the metal industry, which still applies when buying second-hand.

A special type of milling/grinding machine is the gear cutting machine, which is used to created gears and other toothed wheels. Gears and the like need to feature consistent precision, even in serial production, which means the machines must be extremely high quality. The gear cutting machine is similar to conventional machining centres, but it features a few special functions specially tailored to their task. A gear cutting machine (also including rolling machines and gear grinding machines) is usually downstream of a hardening facility, which makes metallic gears highly resilient.

Another widespread yet simple piece of machining equipment is the drilling machine. It is used for setting blind- and through-holes as well as cutting threads. Nowadays, drilling machines are frequently integrated into CNC machining centres.

Finishing and surface processing are then performed by grinding, polishing and lapping machines. They ensure that the abrasion process only removes a hundredth or thousandth of a millimetre for extremely precise results. In addition to achieving the desired tolerances, grinding, polishing and lapping machines also serve to prepare metals for galvanising. Applying chrome finishes to metallic products also requires thorough polishing treatment.

A special type of division and abrasion machinery is the eroding machine. These “reverse welding machines” operate using an electric current and can create highly precise cavities in metal blocks. Eroding machines are often used in tool-building and produce resilient highly precise tools for presses, punching machines, and pressure/injection casting machines.

Cutting metals without tools

In addition to mechanic division processes, such as sawing, milling and grinding, there are also some ways of cutting metals which do not require any tools.

The simplest and cheapest way of cutting metal into pieces is flame cutting. This involves a flame consuming fuel gas and oxygen at high temperatures being guided through a piece of metal. It can be a fairly rough method and produces imprecise gaps of several millimetres even when operated using CNC equipment. Flame cutting also creates a zone of several millimetres along the burning edges in which the metal hardens to a great extent. If this is not desired for the end product, this “heat-affected zone” must then be milled.

Plasma cutting is similar to flame cutting but it is more precise and less prone to creating heat-affected zones. Using CNC guidance and a firing table, plasma cutting can produce highly precise contours even on thick material. Flame- and plasma-cutting machines require a starting material that is at least a few millimetres thick. Plasma- and flame-cutting can also be used on materials up to several centimetres thick.

When it comes to thin sheets, laser cutting is the ideal choice. It produces extremely fine, precise results without resulting in any significant cutting loss. In contrast to flame cutting, laser cutting is not possible using a hand-held device. Laser cutting machines are generally stationary work tables with computer numerical control (CNC).

In cases where cold cutting processes are preferred, water jet cutting is the path to take. This established method involves a very strong and piercing jet of water and an abrasive medium cutting through metallic sheet material. Also known as “aqua cut”, this procedure produces no heat-affected zones whatsoever and can achieve very high levels of precision.

Metal joining

The most widely used process to join metals is welding. The simplest form of welding is friction welding, but it is rarely used. Electric- and gas-shielded arc welding are far more widespread. Submerged arc welding (SAW) is the ideal choice for very thick sheet metal.

Electric- and gas-shielded arc welding devices are available as hand-held tools through to large-scale stationary welding machines. Friction and SAW welding devices are only used for processing large parts.

Other methods of metal-joining include riveting and gluing.

Metal surface treatment

Alongside grinding and polishing are a number of other surface treatment machines designed for use on metals, which can be sub-divided into “coating machines” and “treatment machines”.

Coating machines

The coating machines used in the metal industry are primarily galvanic coating systems. They cover the finished metal product with a thin layer made from zinc, copper, gold or chrome. The simplest galvanic coating systems are known as hot-dip galvanising plants. They are mostly used on steel products to provide permanent protection against corrosion. Chromium plating systems are also widely used. These are complex and use a multi-stage dipping procedure where the metal products are coated in a thin layer of shiny chrome.

In addition to galvanising, there are also powder-coating procedures that can be used on metal products. This involves subjecting the finished products to an electrical current which then causes them to attract a powder coating that is sprayed in their direction. Once coated in plastic-based powder, the products are taken to a furnace where the plastics melt and form a seamless surface that protects the metal from corrosion over its lifespan and gives to the product the desired colour.

Metals can also be coated using any number of painting and adhesion procedures.

Treatment machines

The main types of metal treatment machines are hardening/tempering plants using heat. These consist of an annealing furnace and a bath of oil and work by heating and rapidly cooling the workpiece to create a resilient, tempered surface zone. Hardened metallic products are often used where abrasion processes are expected: gear wheels, bearing shells, shafts and grinding paths are often given a hardened surface in order to increase the lifespan of the final product.

Precision checks by measuring and testing machines

A final product is only as good as its worst component. This is why a range of measuring and testing machines have been developed to ensure each single part of a construction possesses exactly the right properties and dimensions. Material testing is a very special component of metal processing. It can be roughly sub-divided into “destructive” and “non-destructive” testing methods.

Destructive metal-testing procedures

The classic machine used for destructive testing is the universal tensile testing machine, which works by clamping a metal sample in a tension device and pulling it until it falls apart. This helps precisely define the elastic and deforming zones of a material.

Notched impact hammers are also a widely used method that investigate the resilience of a material. They involve a rotating hammer that strikes a metal sample widthways to determine the force required to break it.

Hardness testing machines also require a defined, pre-treated sample, which they penetrate at a defined force using a needle to measure how deep the needle passes into the material. In recent years, widespread use of manual hardness testing machines is starting to give way to automated systems.

To obtain a comprehensive overview of a metal product’s composition, the machine to use is the spectrometer which closely examines the metal’s structure and any alloys present.

Non-destructive metal-testing procedures

Testing methods that do not destroy the sample include visual, tactile and more penetrative approaches.

Visual metal-testing processes include all testing steps that can be performed by the naked eye: from the ruler, measuring tape, measuring slider, test screw, magnifying glass or microscope – industry offers a huge selection of different testing tools for visual inspection. Today, these are often supported by highly precise laser measuring devices.

Tactile measuring methods may involve, for example, 3D coordinate-measuring systems that work by leading a highly sensitive probe or scanning head over a metallic product to measure its dimensional accuracy at a selection of pre-defined points. This approach is frequently used for checking welded constructions.

Two main approaches are used to glimpse inside the metal without destroying it: x-ray and ultrasound. X-ray is very precise and reliable but is dangerous due to the radiation produced, which becomes especially troublesome since some tests may take several hours (depending on material thickness). Ultrasound procedures, by contrast, are far quicker, less dangerous and can be performed using hand-held or stationary devices.

What do I need to know when buying metalworking equipment?

Lifespan of metalworking machinery

Even the very best lathe (or any type of machine for that matter) becomes as worthless as scrap metal at some point in time. In contrast to woodworking machines, those for metal are always limited when it comes to service life: the forces involved are simply too great and even the most robust designs will wear out over time.

However, another aspect to consider when it comes to metal working tools is the pressure to innovate and create new machines, which is far more considerable than in the woodworking field: the tolerances become ever more precise and narrow, the complexity of contours required continually increases and productivity, of course, simply must be enhanced. This then leads to older but still serviceable machines becoming obsolete and replaced by more modern, high-performance machinery.

Buying second-hand

As such, it is important that prospective purchasers of used metalworking machinery carefully consider what tolerances, complexity and productivity they hope to achieve with their second-hand metal work tools. For each type of machine there are different technical specifications that can assist the buyer:

  • Number of firing cycles for pressure casting machines
  • Pressing forces and cycle rate for punches and presses
  • Feed rates for mills and lathes

etc. Once it is known what the minimal expectations of the used metal-working machines are, the hunt for a suitable machine can begin.

Inspecting metalwork machinery

Once found, the task is to closely inspect the metal machinery. Operating hours, signs of wear, and general condition can provide key insights into the metal work equipment. In an ideal scenario, a test should be performed under real conditions by producing a defined sample piece using the machine and then carefully measuring it to determine dimensional accuracy. This also allows the potential buyer to determine the machine’s production speed (nothing is worse than finding out too late that the machine cannot produce the number of units needed in the desired time). It is wiser to make a compromise in terms of achieving a particular tolerance than by settling for substandard productivity.

Maintaining and repairing metal-working machines

The task of maintaining and repairing metal working machines is solely intended for trained experts and specialist companies, but there are now many to choose from in the field. Some specialists are also capable of more than simply restoring a used machine’s original functions: the machine’s capabilities can even be increased to give the machine a new lease of life for future years. Some specialists are capable of enhancing the productivity, precision, rigidity and functionality of a used metal-working machine to such an extent that it can compete on an (almost) playing field level with a brand-new machine.

That said, every metalworking machine has its own use-by date, after which overhauling is not economically viable, but ongoing repairs, maintenance and expertise can keep pushing it back.

Well-known manufacturers of metalwork machines

The number of companies that produce metalworking machines is just as extensive as the variety of approaches to processing metals. As with the woodworking machine sector, there are producers offering a wide selection of machines and devices as well as manufacturers with a very specific machine portfolio.

As for the second-hand market, there are also many companies that play a key role in ensuring used machines produced by companies no longer in existence can continue to be used for a variety of applications and attain the best results, thereby helping operators to fully benefit from the price advantages of buying second-hand

The following overview presents the best-known manufacturers and the machines available from them.

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