Method of bonding Ti-alloy members
AssigneeDaido Steel Co., Ltd.
InventorsTakao Shimizu, Hirotsugu Horio
Life of this patent
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Abstract
A method of firmly jointing Ti-alloy members of various shapes such as pipes and rods by solid diffusion bonding. The members are butted and heated under pressure in a non-oxidizing atmosphere, while a Ti-layer is disposed at the interface of butting by either (1) inserting a sheet for bonding made of Ti having a thickness of 500 .mu.m or less between the butted faces, or (2) previously forming a Ti-layer for bonding having a thickness of 1 .mu.m or more on at least one of the butted faces by any method such as vapor deposition.
Claims25
A method of bonding Ti-alloy members comprising:
- butting two Ti-alloy members to be bonded with insertion of a Ti-sheet of thickness 500 .mu.m or less between the butted faces of the members;
- heating the butted faces to a high temperature near but lower than the transformation temperature of the Ti-alloy, in a non-oxidizing atmosphere, while applying pressure of 5 MPa or higher to the butted faces;
- and holding the members for a period of 3 minutes or longer.
A method of bonding Ti-alloy members comprising:
- forming a Ti layer of a thickness of 1 .mu.m or more at least one of the two ends of the two Ti-alloy members to be bonded;
- butting the faces of the two members;
- heating the butted faces to a high temperature near but lower than the transformation temperature of the Ti-alloy, in a non-oxidizing atmosphere, while applying pressure of 5 MPa or higher to the butted faces;
- and holding the members for a period of 3 minutes or longer.
A method of bonding Ti-alloy members comprising:
- butting two Ti-alloy members to be bonded with insertion of an intermediate member having Ti-layers of a thickness of 1 .mu.m or more between the butted faces of the two members to be bonded;
- heating the butted faces to a high temperature near but lower than the transformation temperature of the Ti-alloy, in a non-oxidizing atmosphere, while applying pressure of 5 MPa or higher to the butted faces;
- and holding the members for a period of 3 minutes or longer.
Dependencies are inferred from the claim text.