John D. Murphy, 71, died Dec. 19 in Ketchikan. He and his wife, Brenda, started Ketchikan Welding in 1969, took over Ketchikan Welding Works in 1973 and then established Alaska Ship and Drydock in 1987. He was a master machinist, welder and fabricator.
What makes stainless steel stainless?
What is the difference between 18/8, 18/10 and 18/0 stainless
steel?
Can stainless steel rust? Why? (I thought stainless did not
rust!)
What is the difference between 304 and 316 stainless steel?
Is stainless steel magnetic?
What is "passivation"?
Can stainless steel be "welded"?
Can stainless steel [...]
Question
I am welding 18g stainless to stainless sinks in an undermount fashion. (Franke
sinks). The result is extreme expansion warping of the stainless top. TIG pulse
mode, 60 amps peak, 30 amps at low, 50% pulse width, 100 pulse per sec.( Hz.)
Tried a 1″ cold copper bar 1/2 ” from weld on top to draw [...]
From rockwelder.com a fine selection of handrail pictures. Excellent design fabrication and welding.
A Thermic Lance is a steel pipe packed with mixed metal wires. Pure oxygen gas is passed through the pipe from an oxygen cylinder and regulator. The end of the pipe is lit with a high temperature source, e.g. an oxy-acetylene torch. The iron in the steel burns in the oxygen coming down the pipe to produce enormous heat. Read More
A Chart for The Lincoln Two Roll System
Here is a handy chart.
This is from Keen Ovens
7018 welding rods allow very little hydrogen into the weld pool unless they have moisture in them from not being stored correctly. Moisture allows hydrogen into the flux, which is then introduced into the weld pool adversely. What happens is the moisture is superheated and then bubbles up to the surface [...]
CORESHIELD 8
Coreshield 8 is a self-shielded flux cored wire designed to weld critical structural applications while maintaining excellent arc characteristics and high welder appeal. Coreshield 8 is tested and certified to meet the new AWS D designation requirements, making this self-shielded wire an excellent choice for demand critical welds when the AWS D1.8 Seismic Supplement is utilized. Superior mechanical properties and X-ray quality welds
Coreshield 8 Seismic Data Sheet
Seismic Certifications
| Diameter | Amps | Volts | Wire Feed Speed | Deposition Rate | Efficiency | Electrical Stickout |
|---|---|---|---|---|---|---|
| 5/64 in | 150 A | 21 | 90 ipm | 3.96 lbs./hr | 80.6 % | 3/4 inches |
| 5/64 in | 175 A | 22 | 110 ipm | 4.83 lbs./hr. | 80.9 % | 3/4 inches |
| 5/64 in | 200 A | 23 | 135 ipm | 5.93 lbs./hr. | 80.4 % | 3/4 inches |
| 5/64 in | 320 A | 24 | 240 ipm | 10.53 lbs./hr. | 81.0 % |
