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Welding/tig welding cobalt-6(stellite) rod to carbonn steel for surfacing

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Gary Galway wrote at 2011-07-27 12:47:32
If you are using the real Stellite material pre heat and post heat are very important and you can reduce or eliminate the cracking. You must take the base material to full expansion prior to welding and keep it there while applying the overlay. For Stellite 6 I would recommend approx. 600*F. Once you are finished welding cool the pieces as slowly as you can. Bury it in sand or vermiculite for a couple of days.



If you continue to have issues you can send it to us and we can do the work for you.



Hope this helps


Vinayak wrote at 2012-02-12 10:45:45
Well add on to this,

I have got here to do a stellite 6 overlay on SS410.

i am looking foraward to qualify a welding procedure first.

Could you please suggest how to carry on this overlay.



Basematerial - SS 410 , thickness 20mm-25 mm

Filler wire  - Stellite 6 ,

Process  - Tig welding

To what temp we need to preheat , and to what temp we have to do PWHT, heating rate,cooling rate,holding time ?  


jim wrote at 2013-07-29 18:44:16
Vinayak,

Could you ever get answer to your question? if yes, please share. i am also in the same boat as you were.

Thanks in advance.

Jim


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Ernie Leimkuhler

Expertise

Questions about Oxy-Acetylene welding/cutting, MIG, TIG, Flux-core, Stick welding, brazing and soldering, bike frames, air frames, motorcycle frames, structural welding. Also questions about Welding Certifications and Inspections. All questions about fabrication of metals (stainless steel, steel , aluminum, brass, bronze, copper). Basic questions about underwater welding. TIG is my strongest subject.

Experience

Extensive background in most welding fields. 18 years fabrication of metal theatre scenery, 16 years structural steel, 2 years pipe welding, 9 years as a Welding Instructor at South Seattle Community College, and 5.5 years as a Welding Instructor at the Divers Institute of Technology. 16 years Industrial Welding Consultant for fabrication shops in the greater Seattle Area. 11 years Architectural Metal Fabrication. 8 years in Film/TV; SPFX/construction/set-deco/props/. 33 years Blacksmithing and Knifemaking. Currently a Field Welding Inspector for Otto Rosenau and Associates.

Organizations
American Welding Society - Certified Welding Inspector Washington Assoc of Building Officials (WABO) - Special Inspector - Structural and Reinforcing Steel.

Publications
Do a search on google groups for "Ernie Leimkuhler" in the rec.crafts.metalworking and sci.engr.joining.welding groups. http://www.stagesmith.com/ http://www.metalwebnews.com/ Blacksmith's Gazzette - Anvil Making

Education/Credentials
BA Theatre Technology - Purdue University.

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