Sunday, 24 June 2012

welding


welding
welding

A quick reference for welding

6010


bulletAll positions
bulletDeep penetration 
bulletDC reverse polarity
bulletRod is mild steel
bulletApplication – use medium arc, whipping or weaving on vertical and overhead to control bead sag.
 

Diameter
Flat amps
Vertical amps
Overhead amps
3/32

50 – 90

50 – 90

50 – 90
1/8

90 – 140

90 – 130

90 – 130
5/32

120 – 180

130 – 150

130 – 160
3/16

150 - 230

140 - 270

140 - 180
 

6011 (blue spot)


bulletAll positions
bulletGood penetration 
bulletAC or DC reverse polarity
bulletRod is mild steel
bulletApplication – stringer beads for overhead fillet, weaving for vertical and horizontal fillets.


Diameter
Flat amps
Vertical amps
Overhead amps
3/32

50 –75

50 –75

50 – 75
1/8

90 –140

80 –110

80 – 130
5/32

110 – 160

120 – 145

120 – 150
3/16

160 – 195

160 180

140 - 180
7/32

190 – 250

 

 
1/4

200 - 300

 

 
  

7018 


bulletAll positions
bulletAC or DC reverse polarity
bulletIron in coating good with AC and allows high current settings
bullet Application – use highest current practical in range, use straightforward progression and short arc, weld puddle very fluid.


Diameter
Flat amps
Vertical amps
Overhead amps
3/32

65 100

65 – 90

80 – 100
1/8

120 – 150

100 – 130

120 – 150
5/32

150 – 210

120 – 160

150 – 210
3/16

240 -280

180 - 220

240 - 280


7024


bulletHigh speed down hand or horizontal
bulletAC or DC straight polarity
bulletBest for horizontal and flat welding
bullet Application – use drag method or open arc (keep arc short), weaving may be used.


Diameter
Minimum amps
Maximum amps
Best amps
3/32

80

125

110
1/8

140

180

170
5/32

185

250

250
 

316ELC16


bulletStainless, NiCr – for welding 316EL & 317 Stainless steels
bulletUse for high heat applications – i.e. Exhaust bellows
bulletAC or DC reverse polarity
bullet Application – any position, vertical – weld up.


Diameter
Flat amps
Vertical amps
Overhead amps
1/16

20-35

15 – 25

20 –30
5/64

30 – 50

25 –35

30 – 40
3/32

40 – 70

35 – 50

40 –60
1/8

65 - 100

55 - 70

60 –85
 

 1851


bulletFor brass, bronze, copper and joining dissimilar metals
bulletMaterial must be clean
bulletCopper alloys must be pre-heated
bullet Application – all positions, vertical – weld up.


Diameter
Flat/overhead amps
 Vertical amps
 
3/32

100 – 120

40 – 60

 
1/8

125 –160

65 -100

 
5/32

150 - 200

80 -120

 

 

Some other tips...

MIG welding

To get deeper penetration you do this (in order of usefulness):
Increase wirespeed, decrease stickout, drag the torch, switch to straight CO2, use skinnier wire. 
To get shallower penetration you do this (in order of usefulness):
Reduce wirespeed, increase stickout, push the torch, switch to argon/CO2 mix, use thicker wire. 
To get a larger bead you do this (in order of usefulness):
Increase wirespeed, decrease travel speed, increase stickout. 
To get a smaller bead you do this (in order of usefulness):
Decrease wirespeed, increase travel speed, decrease stickout. 
To get a higher, narrower (colder) bead you do this (in order of usefulness): Decrease voltage, drag torch, increase stickout. 
To get a flatter, wider (hotter) bead you do this (in order of usefulness): Increase voltage, Push torch, Decrease stickout.
To get a faster deposition rate you do this (in order of usefulness):
Increase wirespeed, increase stickout, use smaller wire. 
To get a slower deposition rate you do this (in order of usefulness):
Decrease wirespeed, decrease stickout, use larger wire.  
Note that when you change the stickout you change the current, so you might need to adjust the wirespeed to compensate. Same with changing wire size, obviously.

 

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