Methods for resistance cladding and welding on hot crack susceptible materials
AssigneeGeneral Electric Company
InventorsHenry Peter Offer, Eric Russel Willis
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Abstract
Electrical resistance welding with low heat input in conjunction with applied forces effecting compressive forces in the weld are utilized to weld materials sensitive to hot cracking. An electrode coupled with a force applicator performs a low heat input resistance-type weld with triaxial compressive forces introduced in the weld to prevent or inhibit the formation of tensile induced cracks in the weld. This enables subsequent fusion welding overlying the initial weld without risk of hot cracking in the final weld.
Claims9
A method of welding on a substrate susceptible to hot cracking comprising the steps of:
- (a) applying a non-fusion electrical resistance weld to the substrate susceptible to hot cracking;
- (b) while performing step (a), applying a localized force to compressively stress the weld;
- and
- (c) performing steps (a) and (b) for a predetermined time and over a temperature and force regime to substantively preclude subsequent hot cracking in the weld.
A method of welding on a substrate susceptible to hot cracking comprising the steps of:
- (a) applying a low heat input solid state weld to the substrate susceptible to hot cracking;
- (b) while performing step (a), applying a localized force to the weld compressively stressing the weld and;
- (c) performing steps (a) and (b) for a predetermined time and over a temperature and force regime to substantially preclude subsequent hot cracking in the weld.
Dependencies are inferred from the claim text.