System for preventing the formation of martensite in metals joining applications
AssigneeEdison Welding Institute, Inc.
InventorDavid P. WORKMAN
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Abstract
A method for joining materials such as metal alloys that includes a first component, wherein the first component includes a first alloy having a known austenization temperature below which martensite forms when the component is heated and then cooled at a predetermined rate of cooling; a second component, wherein the second component includes a second alloy; and a welding apparatus operative to create a weld between the first and second components without crossing the austenization temperature of the first alloy.
Claims20
A method for joining materials, comprising:
- (a) providing a first component, wherein the first component includes a first alloy having a known austenization temperature below which martensite forms when the component is heated and then cooled at a predetermined rate of cooling;
- (b) providing a second component, wherein the second component includes a second alloy;
- and
- (c) utilizing a welding apparatus to create a weld between the first and second components without crossing the austenization temperature of the first alloy and forming martensite therein.
A method for joining materials, comprising:
- (a) providing a first component, wherein the first component includes a first alloy having a known austenization temperature below which martensite forms when the component is heated and then cooled at a predetermined rate of cooling;
- (b) providing a second component, wherein the second component includes at least one low-sulfur, low-lead alloy;
- and
- (c) utilizing a welding apparatus to create a weld between the first and second components without crossing the austenization temperature of the first alloy and forming martensite therein.
A method for joining materials, comprising:
- (a) providing a first component, wherein the first component includes a first alloy having a known austenization temperature below which martensite forms when the component is heated and then cooled at a predetermined rate of cooling, wherein the first component further includes heat-treated steel, and wherein the first component is a length of train rail;
- (b) providing a second component, wherein the second component includes at least one low-sulfur, low-lead alloy, wherein the second component further includes an appurtenance that provides a surface to which a signal wire or other device may be attached, and wherein the appurtenance is a stud, bolt, or block;
- and
- (c) utilizing a welding apparatus to create a weld between the first and second components without crossing the austenization temperature of the first alloy and forming martensite therein, wherein the welding apparatus performs solid-state welding, and wherein the welding apparatus is an inertia friction welding machine.
Dependencies are inferred from the claim text.