Deposit metal welding method
AssigneeECI, Inc.
InventorKazumi Wada
Life of this patent
Estimating the term…
Abstract
To prevent decreases in fatigue strength of a base material by relieving the residual stress of a weld. A method for welding a deposit metal to a base material with reduced residual stress, comprising a step of welding a deposit metal to a base material; and a step of plastically deforming into a recess, an area on the surface of the base material around a peripheral portion of the deposit metal. The invention is also directed to a welded block joint between a wire and a base material, characterized by comprising a deposit metal receiving an end portion of the wire and welded to the base material, wherein an area which is plastically deformed into a recess is formed on the base material surface at a peripheral portion of the deposit metal.
Claims13
A method for welding a deposit metal to a base material with reduced residual stress, characterized by comprising:
- a step of welding a deposit metal to a base material;
- and
- a step of plastically deforming an area on the surface of the base material to form a recess in the base material around a peripheral portion of the deposit metal, wherein said plastic deformation step is performed after said welding step.
A method for welding a deposit metal to a base material with reduced residual stress, characterized by comprising:
- a step of welding a deposit metal to a base material;
- and
- a step of plastically deforming, into a recess, an area on the surface of the base material around a peripheral portion of the deposit metal, wherein the area around the peripheral portion which is plastically deformed into a recess lies further to the outside than a heat-affected portion formed outside a melt portion which is melted during the weld.
A method for welding a deposit metal to a base material with reduced residual stress, characterized by comprising:
- a step of welding a deposit metal to a base material;
- and
- a step of plastically deforming, into a recess, an area on the surface of the base material around a peripheral portion of the deposit metal, characterized in that said base material is a rail material which has been thermally treated to improve wear resistance.
A method for welding a deposit metal to a base material with reduced residual stress, characterized by comprising:
- a step of welding a deposit metal to a base material;
- and
- a step of plastically deforming, into a recess, an area on the surface of the base material around a peripheral portion of the deposit metal, characterized in that said welding step is a thermit welding step.
A method for welding a deposit metal to a base material with reduced residual stress, characterized by comprising:
- a step of welding a deposit metal to a base material;
- and
- a step of plastically deforming, into a recess, an area on the surface of the base material around a peripheral portion of the deposit metal, characterized in that said base material is a rail for a railroad, and said deposit metal receives an end portion of a bond cable and electrically connects the bond cable to a rail.
A welded block joint between a wire and a base material, characterized by comprising a deposit metal receiving an end portion of the wire and welded to the base material, wherein an area which is plastically deformed into a recess is formed on the base material surface at a peripheral portion of the deposit metal.
Dependencies are inferred from the claim text.