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Metalworking Machinery

Well-maintained machines from top brands - for industry & craft 2,337 Machines
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VICTOR VC-105 Vertical Machining Centre Vertical Machining Centres
Top lot
Top lot
Dimensions (l x w x h) approx. 4,232 x 2,838 x 2,615 mm
Year of manufacture 1998
Weight approx. 7,500 kg
Machine available from Immediately
Delivery terms FCA Nuenen, loaded on truck
Nuenen Netherlands, 5674 TR Nuenen
10/02/2021 12:07
0 Bids
7,500 €
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MATSUURA VX-1100 Vertical Machining Centre Vertical Machining Centres
Top lot
Top lot
Dimensions (l x w x h) approx. 2,700 x 3,800 x 2,730 mm
Year of manufacture 1991
Weight approx. 5,500 kg
Machine available from Immediately
Delivery terms FCA Nuenen, loaded on truck
Nuenen Netherlands, 5674 TR Nuenen
10/02/2021 12:06
0 Bids
3,500 €
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CHIRON MILL-800 FA 5-Axis Machining Centre CNC Machining Centres
Top lot
Top lot
Dimensions (l x w x h) approx. 7,600 x 6,200 x 3,200 mm
Year of manufacture 2012
Weight approx. 10,000 kg
Machine available from Immediately
Delivery terms FCA Brescia, loaded on truck
Brescia Italy, 25135 Brescia
23/02/2021 11:03
0 Bids
100,000 €
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TRUMPF Trumatic 5000 R Punching Machine Punching Machines
Top lot
Top lot
Dimensions (l x w x h) approx. 15,800 x 8,300 x 3,360 mm
Year of manufacture 2005
Weight approx. 20,000 kg
Machine available from immediately
Delivery terms FCA Sueca, loaded on truck
Security deposit Credit card required
Sueca Spain, 46410 Sueca
11/02/2021 10:19
1 Bid
28,500 €
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ELB SWB 8 VAII Surface Grinding Machine Surface Grinders
Top lot
Top lot
Dimensions (l x w x h) approx. 2,800 x 1,600 x 2,300 mm
Weight approx. 4,500 kg
Machine available from immediately
Delivery terms FCA Großwallstadt, loaded on truck
Großwallstadt Germany, 63868 Großwallstadt
23/02/2021 14:14
0 Bids
1,000 €
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REIS 600 K 40 TO Spotting Press Die Spotting Presses
Top lot
Top lot
Dimensions (l x w x h) approx. 1,700 x 1,600 x 3,000 mm
Year of manufacture 1969
Weight approx. 5,000 kg
Machine available from immediately
Delivery terms FCA Großwallstadt, loaded on truck
Großwallstadt Germany, 63868 Großwallstadt
23/02/2021 14:09
0 Bids
1,000 €
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DECKEL MAHO DMU 60 E Vertical Machining Centre Vertical Machining Centres
Top lot
Top lot
Dimensions (l x w x h) approx. 2,600 x 2,600 x 2,200 mm
Year of manufacture 1999
Weight approx. 4,500 kg
Machine available from immediately
Delivery terms FCA Großwallstadt, loaded on truck
Großwallstadt Germany, 63868 Großwallstadt
23/02/2021 14:00
0 Bids
2,000 €
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DECKEL MAHO DMU 50 T Machining Centre CNC Machining Centres
Top lot
Top lot
Tip
Dimensions (l x w x h) approx. 3,300 x 1,900 x 2,600 mm
Year of manufacture 1998
Weight approx. 3,500 kg
Machine available from From March 2021
Delivery terms FCA Uznach, loaded on truck
Uznach Switzerland, 8730 Uznach
25/01/2021 13:06
4 Bids
5,600 €
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BOLDRINI MSF/T 45x4800 Bottom Flanging Machine Other Sheet Metal Processing Machines
Top lot
Top lot
Dimensions (l x w x h) approx. 11,500 x 4,800 x 6,000 mm
Year of manufacture 2008
Weight approx. 45,000 kg
Machine available from Immediately
Delivery terms FCA Loredo-Mieres (Asturias), loaded on truck
Security deposit Credit card required
Loredo-Mieres … Spain, 33682 Loredo-Mieres (Asturias)
16/02/2021 11:00
0 Bids
50,000 €
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Dimensions (l x w x h) approx. 7,000 x 14,000 x 9,400 mm
Year of manufacture 2013
Weight approx. 40,000 kg
Machine available from immediately
Delivery terms FCA Gennevilliers, loaded on truck
Gennevilliers France, 92230 Gennevilliers
04/02/2021 14:00
1 Bid
250,000 €
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YASKAWA Motoman ES165D 6- Axis robot Welding Robots
Top lot
Top lot
Dimensions (l x w x h) approx. 2,500 x 1,750 x 2,750 mm
Year of manufacture 2011
Weight approx. 1,250 kg
Machine available from immediately
Delivery terms FCA LE Helvoirt, loaded on truck
LE Helvoirt Netherlands, 5268 LE Helvoirt
10/02/2021 12:03
2 Bids
3,700 €
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KAO MING KMC-3000 SD Portal Milling Machine Portal Milling Machines
Top lot
Top lot
Dimensions (l x w x h) approx. 8,000 x 4,000 x 4,000 mm
Year of manufacture 1997
Weight approx. 45,000 kg
Machine available from Immediately
Delivery terms FCA Lliçà de Vall, loaded on truck
Security deposit Credit card required
Lliçà de Vall Spain, 08185 Lliçà de Vall
25/02/2021 11:27
0 Bids
25,000 €
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MAS MT 32 CNC CNC Lathe CNC Lathes
Top lot
Top lot
Tip
Dimensions (l x w x h) approx. 2,300 x 1,600 x 1,800 mm
Year of manufacture 2001
Weight approx. 2,200 kg
Machine available from immediatly
Delivery terms FCA Cornaux, loaded on truck
Cornaux Switzerland, 2087 Cornaux
21/01/2021 13:29
4 Bids
5,750 €
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OERLIKON DA-U Centre Lathe Centre Lathes
Top lot
Top lot
Dimensions (l x w x h) approx. 3,700 x 1,600 x 1,400 mm
Year of manufacture 1973
Weight approx. 3,500 kg
Machine available from immediately
Delivery terms FCA Lohr am Main, loaded on truck
Lohr am Main Germany, 97816 Lohr am Main
11/02/2021 10:00
6 Bids
750 €
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VOLZ RR50/16 Radial drilling machine Radial Drilling Machines
Top lot
Top lot
Tip
Dimensions (l x w x h) approx. 2,400 x 1,000 x 2,600 mm
Year of manufacture 2002
Weight approx. 3,500 kg
Machine available from immediately
Delivery terms FCA Velen-Ramsdorf, loaded on truck
Velen-Ramsdorf Germany, 46342 Velen-Ramsdorf
21/01/2021 09:30
1 Bid
3,950 €
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WILLEMIN W 418 5-Axis Machining Centre Vertical Machining Centres
Top lot
Top lot
Dimensions (l x w x h) approx. 3,000 x 3,000 x 2,500 mm
Year of manufacture 1996
Weight approx. 2,800 kg
Machine available from immediately
Delivery terms FCA Wien, loaded on truck
Wien Austria, 1030 Wien
04/02/2021 09:00
0 Bids
1,500 €
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WEINGARTEN AR 200 Eccentric Press
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WEINGARTEN AR 200 Eccentric Press Eccentric Presses
Top lot
Top lot
Hot lot
Dimensions (l x w x h) approx. 3,100 x 2,250 x 3,200 mm
Year of manufacture 1967
Weight approx. 12,000 kg
Machine available from immediately
Delivery terms FCA Rothenburg ob der Tauber, loaded on truck
Rothenburg ob … Germany, 91541 Rothenburg ob der Tauber
08/02/2021 10:14
20 Bids
1,300 €
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CHIRON MILL Universal Machining Centre Universal Machining Centres
Top lot
Top lot
Dimensions (l x w x h) approx. 5,000 x 5,000 x 2,700 mm
Year of manufacture 2006
Weight approx. 12,000 kg
Machine available from June 2021
Delivery terms FCA Wiesloch, loaded on truck
Wiesloch Germany, 69168 Wiesloch
18/02/2021 14:02
0 Bids
5,000 €
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ZINSER CNC 2050 Plasma Cutting Unit Laser Cutting Machines
Top lot
Top lot
Dimensions (l x w x h) approx. 14,000 x 6,000 x 4,500 mm
Weight approx. 18,000 kg
Machine available from immediately
Delivery terms FCA Blaubeuren, loaded on truck
Blaubeuren Germany, 89143 Blaubeuren
02/02/2021 12:09
9 Bids
9,250 €
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MIKRON VCE 1400 PRO Machining Centre CNC Machining Centres
Top lot
Top lot
Tip
Dimensions (l x w x h) approx. 3,300 x 4,400 x 3,000 mm
Year of manufacture 2011
Weight approx. 9,000 kg
Machine available from Immediately
Delivery terms FCA, loaded on truck
Security deposit Credit card required
region Varese Italy, region Varese
20/01/2021 09:29
0 Bids
45,000 €
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DORST TPA300/3HP Hydraulic Powder Press
play video
Dimensions (l x w x h) approx. 6,850 x 5,200 x 8,000 mm
Year of manufacture 2017
Weight approx. 20,000 kg
Machine available from immediately
Delivery terms FCA Ripollet, Barcelona, loaded on truck
Security deposit Credit card required
Ripollet, Barc… Spain, 08291 Ripollet, Barcelona
18/02/2021 11:18
0 Bids
487,500 €
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FREUTEK SDM0007 Bore Gauge with Centesimal Comparator Measuring Equipment & Testing Devices (mobile)
Top lot
Top lot
Dimensions (l x w x h) approx. 500 x 200 x 50 mm
Year of manufacture 2019
Weight approx. 2 kg
Machine available from Immediately
Delivery terms FCA Borgaro Torinese (TO), loaded on truck
Borgaro Torine… Italy, 10071 Borgaro Torinese (TO)
18/01/2021 10:23
4 Bids
70 €
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ZIERSCH & BALTRUSCH STARLINE 500 E Surface Grinding Machine
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Dimensions (l x w x h) approx. 2,550 x 2,500 x 2,200 mm
Year of manufacture 2001
Weight approx. 3,500 kg
Machine available from immediately
Delivery terms FCA Halblech, loaded on truck
Halblech Germany, 87642 Halblech
25/02/2021 10:19
7 Bids
6,500 €
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DMG MORI CTX510 CNC Lathe CNC Lathes
Top lot
Top lot
Tip
Dimensions (l x w x h) approx. 6,500 x 3,000 x 2,200 mm
Year of manufacture 2010
Weight approx. 8,000 kg
Machine available from immediately
Delivery terms FCA Eisfeld, loaded on truck
Eisfeld Germany, 98673 Eisfeld
25/01/2021 12:49
0 Bids
25,000 €
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SODICK AG 600 L Wire EDM Machine Wire EDM Machines
Top lot
Top lot
Hot lot
Dimensions (l x w x h) approx. 2,400 x 3,000 x 2,200 mm
Year of manufacture 2003
Weight approx. 5,000 kg
Machine available from immediately
Delivery terms FCA Remscheid, loaded on truck
Remscheid Germany, 42859 Remscheid
18/01/2021 14:27
21 Bids
32,000 €
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FRIEDRICH DECKEL FP 4 A Tool Milling Machine
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FRIEDRICH DECKEL FP 4 A Tool Milling Machine Toolroom Mills
Top lot
Top lot
Dimensions (l x w x h) approx. 3,500 x 1,900 x 2,000 mm
Weight approx. 2,000 kg
Machine available from immediately
Delivery terms FCA Gronau, loaded on truck
Gronau Germany, 48599 Gronau
18/02/2021 10:14
0 Bids
1,000 €
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MIOS T 45 TV Eccentric Press Eccentric Presses
Top lot
Top lot
Tip
Dimensions (l x w x h) approx. 2,500 x 2,000 x 2,500 mm
Year of manufacture 1999
Weight approx. 3,500 kg
Machine available from immediately
Delivery terms FCA Meßkirch Ringgenbach, loaded on truck
Meßkirch Ringg… Germany, 88605 Meßkirch Ringgenbach
28/01/2021 10:03
1 Bid
5,000 €
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EXCETEK V 650 G Wire eroding machine
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EXCETEK V 650 G Wire eroding machine Wire EDM Machines
Top lot
Top lot
Dimensions (l x w x h) approx. 2,900 x 2,700 x 2,300 mm
Year of manufacture 2014
Weight approx. 4,000 kg
Machine available from immediately
Delivery terms FCA Werl, loaded on truck
Werl Germany, 59457 Werl
09/02/2021 10:00
6 Bids
9,250 €
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XYZ MACHINE TOOLS SMX 5000 Bed Type Milling Machine Bed Type Milling Machines
Top lot
Top lot
Dimensions (l x w x h) approx. 3,000 x 2,500 x 2,400 mm
Year of manufacture 2014
Weight approx. 3,750 kg
Machine available from immediately
Delivery terms FCA Torello, loaded on truck
Security deposit Credit card required
Torello Spain, 08570 Torello
02/02/2021 11:02
0 Bids
15,000 €
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HAAS MINIMILL HE Vertical Machining Centre
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HAAS MINIMILL HE Vertical Machining Centre Vertical Machining Centres
Top lot
Top lot
Hot lot
Dimensions (l x w x h) approx. 1,900 x 1,530 x 2,300 mm
Year of manufacture 2001
Weight approx. 1,800 kg
Machine available from immediately
Delivery terms FCA Floh-Seligenthal, loaded on truck
Floh-Seligenthal Germany, 98593 Floh-Seligenthal
21/01/2021 10:09
30 Bids
4,600 €
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HERMLE UWF 900 E Tool Milling Machine
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HERMLE UWF 900 E Tool Milling Machine Toolroom Mills
Top lot
Top lot
Dimensions (l x w x h) approx. 2,400 x 2,200 x 2,000 mm
Weight approx. 2,700 kg
Machine available from immediately
Delivery terms FCA Fellbach, loaded on truck
Fellbach Germany, 70736 Fellbach
23/02/2021 10:09
5 Bids
1,300 €
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HATEBUR OBH 206 Plate Shears Guillotine Shears
Top lot
Top lot
Dimensions (l x w x h) approx. 2,800 x 2,900 x 2,100 mm
Year of manufacture 1997
Weight approx. 4,000 kg
Machine available from immediatly
Delivery terms FCA Andelfingen, loaded on truck
Andelfingen Switzerland, 8450 Andelfingen
closed
7 Bids
FLOTT Box Column Drill Pillar or Column Drilling Machines
Top lot
Top lot
Hot lot
Dimensions (l x w x h) approx. 1,000 x 500 x 1,900 mm
Weight approx. 600 kg
Machine available from immediately
Delivery terms FCA Ingolstadt, loaded on truck
Ingolstadt Germany, 85051 Ingolstadt
19/01/2021 14:39
25 Bids
650 €
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DECKEL FP 4 MK Universal Milling Machine
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DECKEL FP 4 MK Universal Milling Machine Universal Milling Machines
Top lot
Top lot
Hot lot
Dimensions (l x w x h) approx. 2,000 x 1,400 x 1,950 mm
Weight approx. 1,700 kg
Machine available from immediately
Delivery terms FCA Wendlingen am Neckar, loaded on truck
Wendlingen am … Germany, 73240 Wendlingen am Neckar
26/01/2021 10:48
18 Bids
9,750 €
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MARC PC 200MF Laser
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MARC PC 200MF Laser Laser Cutting Machines
Top lot
Top lot
Tip
Dimensions (l x w x h) approx. 5,000 x 2,500 x 2,200 mm
Year of manufacture 2015
Weight approx. 10,000 kg
Machine available from immediately
Delivery terms FCA Fuenlabrada, loaded on truck
Security deposit Credit card required
Fuenlabrada Spain, 28947 Fuenlabrada
20/01/2021 11:41
0 Bids
16,000 €
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SCHULER BEUTLER MCF 800 Automatic Punching Machine
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SCHULER BEUTLER MCF 800 Automatic Punching Machine Automatic Punching Machines
Top lot
Top lot
Tip
Dimensions (l x w x h) approx. 15,000 x 2,500 x 3,000 mm
Year of manufacture 2014
Weight approx. 13,000 kg
Machine available from immediately
Delivery terms FCA MARKE, loaded on truck
MARKE Belgium, 8510 MARKE
29/01/2021 10:06
0 Bids
145,000 €
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RAY FENG MACHINE RSB-32 CNC Lathe CNC Lathes
Top lot
Top lot
Dimensions (l x w x h) approx. 4,700 x 2,100 x 2,010 mm
Year of manufacture 2018
Weight approx. 4,000 kg
Machine available from immediately
Delivery terms FCA Maarheeze, loaded on truck
Maarheeze Netherlands, 6026 RB Maarheeze
closed
0 Bids
40,000 €
TONGTAI QVM-610A APC Vertical Machining Centre Vertical Machining Centres
Top lot
Top lot
Dimensions (l x w x h) approx. 2,340 x 4,355 x 2,878 mm
Year of manufacture 2008
Weight approx. 6,500 kg
Machine available from immediately
Delivery terms FCA Stara Pazova, loaded on truck
Stara Pazova Serbia, 22300 Stara Pazova
closed
3 Bids
Punching Line
play video
Punching Line Double Column Presses
Top lot
Top lot
Dimensions (l x w x h) approx. 3,700 x 2,350 x 6,350 mm
Weight approx. 44,000 kg
Machine available from immediately
Delivery terms FCA Sundern, loaded on truck
Sundern Germany, 59846 Sundern
closed
0 Bids
Details
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KOLB CUBIMAT HT 2000 Horizontal Machining Centre
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KOLB CUBIMAT HT 2000 Horizontal Machining Centre Horizontal Machining Centres
Top lot
Top lot
Dimensions (l x w x h) approx. 11,850 x 9,100 x 7,100 mm
Year of manufacture 1997
Weight approx. 45,000 kg
Machine available from immediately
Delivery terms FCA Köln, loaded on truck
Köln Germany, 50735 Köln
closed
4 Bids
MAZAK H-415 Horizontal Machining Center Horizontal Machining Centres
Top lot
Top lot
Dimensions (l x w x h) approx. 4,600 x 2,555 x 2,700 mm
Year of manufacture 1999
Weight approx. 9,150 kg
Machine available from Immediately
Delivery terms FCA Brescia, loaded on truck
Brescia Italy, 25135 Brescia
23/02/2021 11:04
0 Bids
10,000 €
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AMADA HFP 220-3 L CNC Press Brake Press Brakes
Top lot
Top lot
Dimensions (l x w x h) approx. 4,020 x 1,950 x 3,200 mm
Year of manufacture 2004
Weight approx. 15,000 kg
Machine available from immediately
Delivery terms FCA Sueca, loaded on truck
Security deposit Credit card required
Sueca Spain, 46410 Sueca
11/02/2021 10:25
0 Bids
28,000 €
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BOLDRINI RIBO 12 EL 4200 Flanging machine Other Sheet Metal Processing Machines
Top lot
Top lot
Dimensions (l x w x h) approx. 5,500 x 1,400 x 4,200 mm
Year of manufacture 2008
Weight approx. 11,000 kg
Machine available from Immediately
Delivery terms FCA Loredo-Mieres (Asturias), loaded on truck
Security deposit Credit card required
Loredo-Mieres … Spain, 33682 Loredo-Mieres (Asturias)
16/02/2021 11:01
2 Bids
26,000 €
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BMI B63TH Furnace Heat Treatment Machinery
Top lot
Top lot
Dimensions (l x w x h) approx. 6,000 x 6,000 x 3,000 mm
Year of manufacture 1986
Weight approx. 15,000 kg
Machine available from immediately
Delivery terms FCA Gennevilliers, loaded on truck
Gennevilliers France, 92230 Gennevilliers
04/02/2021 14:01
0 Bids
20,000 €
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BYSTRONIC BySprint fiber 4020 Laser Cutting Machine Laser Cutting Machines
Top lot
Top lot
Dimensions (l x w x h) approx. 12,900 x 6,750 x 2,500 mm
Year of manufacture 2013
Weight approx. 15,000 kg
Machine available from Immediately
Delivery terms FCA Dordrecht, loaded on truck
Dordrecht Netherlands, 3316 EA Dordrecht
10/02/2021 12:00
2 Bids
62,000 €
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ANAYAK FBZ-HV-3000 Gantry Type Milling Machine Gantry Type Milling Machines
Top lot
Top lot
Dimensions (l x w x h) approx. 6,000 x 4,000 x 3,900 mm
Year of manufacture 1992/2013
Weight approx. 19,000 kg
Machine available from Immediately
Delivery terms FCA Lliçà de Vall, loaded on truck
Security deposit Credit card required
Lliçà de Vall Spain, 08185 Lliçà de Vall
25/02/2021 11:19
0 Bids
21,000 €
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SCHAUBLIN 53 Universal Milling Machine Universal Milling Machines
Top lot
Top lot
Hot lot
Dimensions (l x w x h) approx. 1,700 x 1,900 x 1,800 mm
Weight approx. 2,600 kg
Machine available from immediatly
Delivery terms FCA Cornaux, loaded on truck
Cornaux Switzerland, 2087 Cornaux
21/01/2021 13:14
24 Bids
7,000 €
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EX-CELL-O XD 800 N Centre Lathe Centre Lathes
Top lot
Top lot
Dimensions (l x w x h) approx. 5,600 x 1,450 x 1,800 mm
Year of manufacture 1976
Weight approx. 5,000 kg
Machine available from immediately
Delivery terms FCA Lohr am Main, loaded on truck
Lohr am Main Germany, 97816 Lohr am Main
11/02/2021 10:05
5 Bids
650 €
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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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