Dan AMMON,Vince K SHOTTON,Yong GAO,Randall MAXWELL
申请号：
US16429207
公开号：
US20190284664A1
申请日:
2019.06.03
申请国别(地区):
US
年份:
2019
代理人:
摘要：
A method for manufacturing a shape-set nonlinear non-superelastic file comprising the steps of: providing a superelastic file having a shaft and a file axis； providing a fixture including a file path being defined by one or more displacement members, the file path configured for receiving the shaft； inserting at least a portion of the shaft into the fixture along the file path, the portion of the shaft including a first portion of the shaft； contacting the first portion of the shaft with a first displacement member of the one or more displacement members such that the first portion of the shaft is displaced from the file axis thereby forming a first offset portion of the shaft； heating the portion of the shaft while inserted in the fixture to a temperature of at least about 350° C. to about 600° C. for a time period of about 3 minutes to about 30 minutes to shape-set the portion of the shaft while altering the austenite finish temperature thereby forming the shape-set nonlinear non-superelastic file； and wherein the altered austenite finish temperature of the shape-set nonlinear non-superelastic file is ranges from about 20° C. to about 40° C.
