Fuselage Welding

[rail]

Re: Fuselage Welding

Please research the materials and processes you are welding!

I have welded in the Aircraft and Racing industries for the past 23 years. I have not read a (WPS) Welding Process Specification that required pre and post heating of thin wall "mild" 1020 & 1025 steel and "normalized" 4130 alloy steel!

If any one can provide or produce the Taylorcraft dwg and process spec. that requires pre and post heat, I will stand corrected!

Charles

.030" sheet steel teardrop step welded to .065" aero tubing!

[astjp2]

Re: Fuselage Welding

Forrest, the weld is so small and the heat is so intense that you need to pre and post heat to spread out the expansion and contraction....I have seen4130 crack adjacent to tig welds, Tim

[Forrest Barber]

Re: Fuselage Welding

Hi Mark , I answered your direct e-mail , certified Taylorcraft repairs require Oxy-Acet . It is up to your A&P and IA if he ( they) wants to deviate, when the weld fails and causes a death I may be on the side of the deceased parties family . pre and post is correct. I always wonder why, just do it with the torch in the first place.

[astjp2]

Re: Fuselage Welding

Pre and post heat for tig, I would rather gas, less requirement for tight fitment of the joints. Tim

[Ragwing nut]

Re: Fuselage Welding

TIG welds must be post heated to prevent embrittlement. not as bad of an issue on prewars since they are 1025 and not 4130

[Mark Julicher]

Re: Fuselage Welding

TIG is fine.
Just make good welds. An experienced welder is the key to success, not the equipment used.

[Blade]

I have some repairs to do to the fuse. Since the old 1940 B models were gas welded, do repairs on the fuse need to be done the same way or can TIG welding be used?