Sawzall blade weldability question

Jan 07, 2004 4 Replies
J

Greetings all,



O.K., it is actually a Morse brand reciprocating saw blade, but you get the idea. :) I have the need to weld,(TIG) said blade to a piece of 16 ga. CRS to form a serrated edge for gripping. It will only be a short piece, approx. 1 1/4" long, and curved. My question is, the blade contains Cobalt, 8%, will this give me any problems welding? I will probably use either Si/Bronze or SS filler, haven't made up my mind yet. I also figured I will have to cut the blade with a Spedecut rather than a bandsaw due to it being somewhat hardened.



Thanks in advance guys, if anyone cares I will report on my success/failure and any injuries that may occur.



Jim C Roberts


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E

Most good sawzall blades are Bi-Metal blades. The cobalt is in the teeth that are Electron Beam Welded to the spring steel body of the blade.

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J

You are correct, sir.

Hope the spring steel doesn't present a problem, I considered heating the blades to take out any tempering, but I probably won't have time. These pieces were supposed to go out this evening. I hate it, but that's what happens when they send us home for a week and a half.

Thank you Ernie for your answers to my question, Jim C Roberts

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J

Greetings all,

Well, I suppose all's well that ends well. I got the pieces of bladed welded on today. Ted was probably right about using the silver solder, the TIG was almost too hot even using Si/Br filler wire. I would not have thought those blades would have been so "soft". They were the same thickness as the CRS I was using. Oh well, got it done anyway.

Thanks again for all help, Jim C Roberts

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