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Metalworking Machinery

Well-maintained machines from top brands - for industry & craft 2,666 Items
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MANN & HUMMEL Profiling Machine Profiling Machines
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Top lot
Dimensions (l x w x h) approx. 27,000 x 5,000 x 2,400 mm
Year of manufacture 1980
Weight approx. 25,000 kg
Item available from immediately
Delivery terms EXW Genk, ex foundation, unpackaged
Genk Belgium, 3600 Genk
08/06/2021 14:00
1 Bid
14,000 €
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MORI SEIKI NL3000/700 CNC Lathe CNC Lathes
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Hot lot
Year of manufacture 2007
Item available from immediately
Delivery terms FCA Herstal, loaded on truck
Herstal Belgium, 4040 Herstal
08/06/2021 14:02
21 Bids
23,000 €
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TRUMPF TRUMATIC 500 Punching Machine
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TRUMPF TRUMATIC 500 Punching Machine Punching Machines
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Tip
Dimensions (l x w x h) approx. 5,000 x 6,000 x 2,300 mm
Year of manufacture 1997
Weight approx. 11,050 kg
Item available from immediately
Delivery terms FCA Požega, loaded on truck
Požega Serbia, 31210 Požega
12/05/2021 11:11
2 Bids
9,250 €
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MAUS MTV 511 AC CNC Vertical Lathe Vertical Lathes
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Top lot
Year of manufacture 2005
Weight approx. 14,000 kg
Item available from immediately
Delivery terms FCA GOSSELIES, loaded on truck
GOSSELIES Belgium, 6041 GOSSELIES
27/05/2021 10:00
0 Bids
8,000 €
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SICMAT Raso400 CNC Gear Shaving Machine Other Gear Cutting Machines
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Top lot
Dimensions (l x w x h) approx. 6,000 x 2,700 x 2,700 mm
Year of manufacture 1999
Weight approx. 5,000 kg
Item available from immediately
Delivery terms FCA GOSSELIES, loaded on truck
GOSSELIES Belgium, 6041 GOSSELIES
27/05/2021 10:03
0 Bids
8,000 €
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MAUS Tour Vertikal MTV 511AC Vertical Lathe Vertical Lathes
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Top lot
Dimensions (l x w x h) approx. 4,500 x 3,000 x 3,500 mm
Year of manufacture 2002
Weight approx. 15,000 kg
Item available from immediately
Delivery terms FCA GOSSELIES, loaded on truck
GOSSELIES Belgium, 6041 GOSSELIES
27/05/2021 10:01
0 Bids
8,000 €
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MAUS Tour Vertikal MTV 511AC Vertical Lathe Vertical Lathes
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Top lot
Dimensions (l x w x h) approx. 4,500 x 3,000 x 3,500 mm
Year of manufacture 2002
Weight approx. 15,000 kg
Item available from immediately
Delivery terms FCA GOSSELIES, loaded on truck
GOSSELIES Belgium, 6041 GOSSELIES
27/05/2021 10:02
0 Bids
8,000 €
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LVD HST 40/6 Guillotine Shear
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LVD HST 40/6 Guillotine Shear Guillotine Shears
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Top lot
Dimensions (l x w x h) approx. 5,200 x 2,200 x 1,900 mm
Year of manufacture 1994
Weight approx. 7,500 kg
Item available from immediately
Delivery terms FCA Požega, loaded on truck
Požega Serbia, 31210 Požega
12/05/2021 11:13
5 Bids
6,750 €
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Dimensions (l x w x h) approx. 3,500 x 2,000 x 2,000 mm
Year of manufacture 1992
Weight approx. 1,500 kg
Item available from immediately
Delivery terms EXW GOSSELIES, ex foundation, unpackaged
GOSSELIES Belgium, 6041 GOSSELIES
27/05/2021 10:33
0 Bids
4,000 €
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RAUSCH Gratomat GR 300 VHS-I CNC Deburring Machine Other Gear Cutting Machines
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Top lot
Dimensions (l x w x h) approx. 3,500 x 2,400 x 2,300 mm
Year of manufacture 2000
Weight approx. 2,500 kg
Item available from immediately
Delivery terms FCA GOSSELIES, loaded on truck
GOSSELIES Belgium, 6041 GOSSELIES
27/05/2021 10:49
0 Bids
3,600 €
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METALAS MPC 2800/2T Cleaning Machine Cleaning Machines
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Top lot
Dimensions (l x w x h) approx. 5,220 x 3,600 x 3,637 mm
Year of manufacture 1997
Weight approx. 4,070 kg
Item available from immediately
Delivery terms FCA Oudenaarde, loaded on truck
Oudenaarde Belgium, 9700 Oudenaarde
08/06/2021 14:06
0 Bids
2,500 €
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MAZAK Multiplex 6300 II Y CNC Lathe CNC Lathes
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Top lot
Dimensions (l x w x h) approx. 4,260 x 2,420 x 2,100 mm
Year of manufacture 2011
Weight approx. 14,000 kg
Item available from immediately
Delivery terms FCA Deerlijk, loaded on truck
Deerlijk Belgium, 8540 Deerlijk
01/06/2021 10:04
0 Bids
110,000 €
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AMADA PEGA 204040 CNC Turret Punch Press
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AMADA PEGA 204040 CNC Turret Punch Press Punching Machines
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Top lot
Tip
Dimensions (l x w x h) approx. 4,400 x 2,400 x 2,000 mm
Year of manufacture 1990
Weight approx. 8,500 kg
Item available from immediately
Delivery terms FCA Mandjelos, loaded on truck
Mandjelos Serbia, 22208 Mandjelos
12/05/2021 12:10
4 Bids
9,000 €
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Year of manufacture 1997
Weight approx. 24,000 kg
Item available from immediately
Delivery terms FCA GOSSELIES, loaded on truck
GOSSELIES Belgium, 6041 GOSSELIES
27/05/2021 10:04
0 Bids
8,000 €
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AMP AMPOMATOR CLS IV PLUS Wire Processing Machine
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AMP AMPOMATOR CLS IV PLUS Wire Processing Machine Wire EDM Machines
Top lot
Top lot
Tip
Dimensions (l x w x h) approx. 1,350 x 1,350 x 1,800 mm
Year of manufacture 1999
Weight approx. 1,000 kg
Item available from immediately
Delivery terms FCA Sevojno, loaded on truck
Sevojno Serbia, 31205 Sevojno
12/05/2021 11:01
0 Bids
1,900 €
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Dimensions (l x w x h) approx. 1,200 x 1,400 x 1,150 mm
Year of manufacture 2002
Weight approx. 500 kg
Item available from immediately
Delivery terms FCA GOSSELIES, loaded on truck
GOSSELIES Belgium, 6041 GOSSELIES
27/05/2021 10:52
0 Bids
1,200 €
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Dimensions (l x w x h) approx. 1,200 x 1,400 x 1,400 mm
Year of manufacture 2000
Weight approx. 800 kg
Item available from immediately
Delivery terms FCA GOSSELIES, loaded on truck
GOSSELIES Belgium, 6041 GOSSELIES
27/05/2021 10:50
0 Bids
1,200 €
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TOURNAGE Conveyor Belt Machine Tool Accessories & Parts
Dimensions (l x w x h) approx. 1,800 x 910 x 5,700 mm
Weight approx. 2,000 kg
Item available from immediately
Delivery terms FCA GOSSELIES, loaded on truck
GOSSELIES Belgium, 6041 GOSSELIES
27/05/2021 10:48
0 Bids
1,200 €
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GRINDING MASTER MB-900 Abrasive Band Grinding Machine
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Dimensions (l x w x h) approx. 2,700 x 2,200 x 2,200 mm
Weight approx. 500 kg
Item available from immediately
Delivery terms FCA Požega, loaded on truck
Požega Serbia, 31210 Požega
12/05/2021 11:12
0 Bids
1,000 €
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Dimensions (l x w x h) approx. 2,000 x 700 x 2,250 mm
Year of manufacture 2002
Weight approx. 300 kg
Item available from immediately
Delivery terms FCA GOSSELIES, loaded on truck
GOSSELIES Belgium, 6041 GOSSELIES
27/05/2021 10:46
0 Bids
850 €
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KELCH KALIMAT C Presetter Machine Tool Accessories & Parts
Dimensions (l x w x h) approx. 1,500 x 960 x 2,000 mm
Weight approx. 350 kg
Item available from immediately
Delivery terms FCA GOSSELIES, loaded on truck
GOSSELIES Belgium, 6041 GOSSELIES
27/05/2021 10:21
0 Bids
800 €
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Dimensions (l x w x h) approx. 1,850 x 1,200 x 1,500 mm
Year of manufacture 2005
Weight approx. 250 kg
Item available from immediately
Delivery terms FCA GOSSELIES, loaded on truck
GOSSELIES Belgium, 6041 GOSSELIES
27/05/2021 10:47
0 Bids
650 €
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SUNNEN Two WC-B Shoes C Bronze insert mandrel honing shoes
Ends tomorrow!
Dimensions (l x w x h) approx. 270 x 160 x 160 mm
Weight approx. 13 kg
Item available from immediately
Delivery terms FCA Požega, loaded on truck
Požega Serbia, 31210 Požega
12/05/2021 11:40
0 Bids
595 €
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SUNNEN Two LA-C shoes C Honing shoes
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SUNNEN Two LA-C shoes C Honing shoes Machine Tools & Accessories
Tip
Tip
Dimensions (l x w x h) approx. 220 x 110 x 130 mm
Weight approx. 3 kg
Item available from immediately
Delivery terms FCA Požega, loaded on truck
Požega Serbia, 31210 Požega
12/05/2021 11:50
0 Bids
515 €
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SUNNEN Two WC-D Shoes C Insert honing shoes
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SUNNEN Two WC-D Shoes C Insert honing shoes Machine Tools & Accessories
Tip
Tip
Dimensions (l x w x h) approx. 180 x 190 x 160 mm
Weight approx. 11 kg
Item available from immediately
Delivery terms FCA Požega, loaded on truck
Požega Serbia, 31210 Požega
12/05/2021 11:48
0 Bids
510 €
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LABOREX Washing Machine Cleaning Machines
Dimensions (l x w x h) approx. 1,700 x 1,500 x 3,300 mm
Weight approx. 400 kg
Item available from immediately
Delivery terms FCA GOSSELIES, loaded on truck
GOSSELIES Belgium, 6041 GOSSELIES
27/05/2021 10:45
0 Bids
450 €
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SUNNEN Two VA-C shoes DDDD Honing shoes
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SUNNEN Two VA-C shoes DDDD Honing shoes Machine Tools & Accessories
Tip
Tip
Dimensions (l x w x h) approx. 260 x 110 x 90 mm
Weight approx. 4 kg
Item available from immediately
Delivery terms FCA Požega, loaded on truck
Požega Serbia, 31210 Požega
12/05/2021 11:46
0 Bids
435 €
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Mechanical Vice
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Mechanical Vice Machine Vices
Tip
Tip
Dimensions (l x w x h) approx. 700 x 250 x 250 mm
Weight approx. 50 kg
Item available from immediately
Delivery terms FCA Bačka Palanka, loaded on truck
Bačka Palanka Serbia, 21400 Bačka Palanka
12/05/2021 11:14
0 Bids
400 €
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Rotary Table
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Rotary Table Machine Vices
Tip
Tip
Dimensions (l x w x h) approx. 450 x 500 x 450 mm
Weight approx. 50 kg
Item available from immediately
Delivery terms FCA Bačka Palanka, loaded on truck
Bačka Palanka Serbia, 21400 Bačka Palanka
12/05/2021 11:15
0 Bids
400 €
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SUNNEN L16A413 Six Stones C Precision graded honing stones
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Dimensions (l x w x h) approx. 290 x 140 x 190 mm
Weight approx. 6 kg
Item available from immediately
Delivery terms FCA Požega, loaded on truck
Požega Serbia, 31210 Požega
12/05/2021 11:51
0 Bids
390 €
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Hydraulic Vice
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Hydraulic Vice Machine Vices
Tip
Tip
Dimensions (l x w x h) approx. 700 x 250 x 250 mm
Weight approx. 50 kg
Item available from immediately
Delivery terms FCA Bačka Palanka, loaded on truck
Bačka Palanka Serbia, 21400 Bačka Palanka
12/05/2021 12:11
0 Bids
390 €
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SUNNEN 4G-P28 Honing wedges
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SUNNEN 4G-P28 Honing wedges Machine Tools & Accessories
Tip
Tip
Dimensions (l x w x h) approx. 480 x 230 x 150 mm
Weight approx. 6 kg
Item available from immediately
Delivery terms FCA Požega, loaded on truck
Požega Serbia, 31210 Požega
12/05/2021 11:38
0 Bids
385 €
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ROLLET Gear Testing Machine Measuring & Testing
Dimensions (l x w x h) approx. 2,150 x 900 x 1,700 mm
Year of manufacture 1994
Weight approx. 250 kg
Item available from immediately
Delivery terms FCA GOSSELIES, loaded on truck
GOSSELIES Belgium, 6041 GOSSELIES
27/05/2021 10:43
0 Bids
380 €
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Micrometers
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Micrometers Machine Tools & Accessories
Tip
Tip
Dimensions (l x w x h) approx. 400 x 260 x 240 mm
Weight approx. 11 kg
Item available from immediately
Delivery terms FCA Požega, loaded on truck
Požega Serbia, 31210 Požega
12/05/2021 12:04
0 Bids
360 €
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MOL Chuck / Footer
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MOL Chuck / Footer Tool Grinding Machines
Tip
Tip
Dimensions (l x w x h) approx. 260 x 260 x 200 mm
Weight approx. 32 kg
Item available from immediately
Delivery terms FCA Požega, loaded on truck
Požega Serbia, 31210 Požega
12/05/2021 11:29
0 Bids
350 €
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SUNNEN Honing wedges
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SUNNEN Honing wedges Machine Tools & Accessories
Tip
Tip
Dimensions (l x w x h) approx. 270 x 240 x 120 mm
Weight approx. 2 kg
Item available from immediately
Delivery terms FCA Požega, loaded on truck
Požega Serbia, 31210 Požega
12/05/2021 11:39
0 Bids
325 €
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Measuring tools
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Measuring tools Measuring Equipment & Testing Devices (mobile)
Tip
Tip
Dimensions (l x w x h) approx. 410 x 250 x 190 mm
Weight approx. 7 kg
Item available from immediately
Delivery terms FCA Požega, loaded on truck
Požega Serbia, 31210 Požega
12/05/2021 12:06
0 Bids
320 €
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Milling tools
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Milling tools Milling Tools
Tip
Tip
Dimensions (l x w x h) approx. 250 x 280 x 180 mm
Weight approx. 29,5 kg
Item available from immediately
Delivery terms FCA Požega, loaded on truck
Požega Serbia, 31210 Požega
12/05/2021 12:07
0 Bids
285 €
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Sawing Tools
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Sawing Tools Machine Tools & Accessories
Tip
Tip
Dimensions (l x w x h) approx. 1,000 x 1,000 x 100 mm
Weight approx. 390 kg
Item available from immediately
Delivery terms FCA Požega, loaded on truck
Požega Serbia, 31210 Požega
12/05/2021 11:33
0 Bids
260 €
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SANDVIK TPGR 1025 P25 Lot of tools
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SANDVIK TPGR 1025 P25 Lot of tools Machine Tools & Accessories
Tip
Tip
Dimensions (l x w x h) approx. 130 x 120 x 200 mm
Item available from immediately
Delivery terms FCA Požega, loaded on truck
Požega Serbia, 31210 Požega
12/05/2021 11:36
0 Bids
260 €
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SANDVIK TCGR H20K20 Hard metal plates and holder
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SANDVIK TCGR H20K20 Hard metal plates and holder Machine Tools & Accessories
Tip
Tip
Dimensions (l x w x h) approx. 130 x 120 x 200 mm
Item available from immediately
Delivery terms FCA Požega, loaded on truck
Požega Serbia, 31210 Požega
12/05/2021 11:37
0 Bids
255 €
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SANDVIK TPGR 090202 1025P25 4739 Lot of tools
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SANDVIK TPGR 090202 1025P25 4739 Lot of tools Machine Tools & Accessories
Tip
Tip
Dimensions (l x w x h) approx. 200 x 150 x 100 mm
Weight approx. 4 kg
Item available from immediately
Delivery terms FCA Požega, loaded on truck
Požega Serbia, 31210 Požega
12/05/2021 11:19
0 Bids
250 €
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SANDVIK SPGR090304 1025P25 6694 Lot of tools
Ends tomorrow!
SANDVIK SPGR090304 1025P25 6694 Lot of tools Machine Tools & Accessories
Tip
Tip
Dimensions (l x w x h) approx. 200 x 130 x 100 mm
Weight approx. 2 kg
Item available from immediately
Delivery terms FCA Požega, loaded on truck
Požega Serbia, 31210 Požega
12/05/2021 11:18
0 Bids
250 €
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SANDVIK TCGR 060104 H20 K20 Lot of tools
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SANDVIK TCGR 060104 H20 K20 Lot of tools Machine Tools & Accessories
Tip
Tip
Dimensions (l x w x h) approx. 200 x 200 x 150 mm
Weight approx. 18 kg
Item available from immediately
Delivery terms FCA Požega, loaded on truck
Požega Serbia, 31210 Požega
12/05/2021 11:17
0 Bids
250 €
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SANDVIK SPGR 1025 P25 Lot of tools
Ends tomorrow!
SANDVIK SPGR 1025 P25 Lot of tools Machine Tools & Accessories
Dimensions (l x w x h) approx. 130 x 120 x 200 mm
Weight approx. 2,5 kg
Item available from immediately
Delivery terms FCA Požega, loaded on truck
Požega Serbia, 31210 Požega
12/05/2021 11:34
1 Bid
250 €
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Milling tools
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Milling tools Milling Tools
Dimensions (l x w x h) approx. 170 x 260 x 170 mm
Weight approx. 18,6 kg
Item available from immediately
Delivery terms FCA Požega, loaded on truck
Požega Serbia, 31210 Požega
12/05/2021 12:01
1 Bid
240 €
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Milling tools
Ends tomorrow!
Milling tools Milling Tools
Tip
Tip
Dimensions (l x w x h) approx. 200 x 360 x 180 mm
Weight approx. 29,7 kg
Item available from immediately
Delivery terms FCA Požega, loaded on truck
Požega Serbia, 31210 Požega
12/05/2021 11:59
0 Bids
240 €
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SUNNEN L16A413 Six Stones DDDD Precision graded honing stones
Ends tomorrow!
Dimensions (l x w x h) approx. 200 x 140 x 170 mm
Weight approx. 4 kg
Item available from immediately
Delivery terms FCA Požega, loaded on truck
Požega Serbia, 31210 Požega
12/05/2021 11:42
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230 €
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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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