Search found 5 matches
Search found 5 matches
· Page 1 of 1
- by weldprof
- Sun Mar 25, 2012 6:26 pm
- Forum: Stick Welding/Arc Welding - Shielded Metal Arc Welding
- Topic: DC polarity
- Replies: 22
- Views: 24611
Re: DC polarity
The AWS tried, for the most part, years ago to eliminate the terminology "Reverse" and "Straight" Polarity. Welders (operators) have not let go of the terminology. There is much correct information on the responses to the question. The important fact that I either missed or was n...
- by weldprof
- Sun Mar 25, 2012 5:58 pm
- Forum: Welding Forum General Shop Talk
- Topic: cast iron welding
- Replies: 17
- Views: 1845
Re: cast iron welding
Excellent machine. Set it up as you were doing steel. Tungsten same, polarity same, so forth and so on. Once you have determined the length of the cracks and their severity then drill holes at the end of the cracks to stop the propagation of the cracks. If the holes are not beginning from an edge th...
- by weldprof
- Sun Mar 25, 2012 2:43 pm
- Forum: Welding Forum General Shop Talk
- Topic: Urgent advice needed
- Replies: 2
- Views: 784
Re: Urgent advice needed
Berend, can you submit a drawing of the (simple sketch) with items listed as in your post? I would suggest back-step welding technique with the addition of alternating welds from one end and opposite sides of attachments to reduce or eliminate distortion. I may also suggest a temporary internal supp...
- by weldprof
- Sun Mar 25, 2012 2:32 pm
- Forum: Welding Forum General Shop Talk
- Topic: cast iron welding
- Replies: 17
- Views: 1845
Re: cast iron welding
The first thing we need to know is what is your welding experience and process ability? It could be Oxy-fuel brazed or GTAW with silicon bronze rod. First the crack should be dye penetration tested to see where the crack ends and starts. Sometimes the human eye cannot see the extent of the cracking....
- by weldprof
- Sun Mar 25, 2012 2:15 pm
- Forum: Welding Projects - Welding project Ideas - Welding project plans
- Topic: Welding alloy steels
- Replies: 7
- Views: 2442
Re: Welding alloy steels
Drill the holes completely through. Cut the pin length less 1/16 inch. Place the pins in the holes and weld from the back side filling the space left by the recess with the GTAW process. Weld at low amperage and you should not have a problem with your heat treatment. Do not allow too much weld conve...
Search found 5 matches
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