专利内容由知识产权出版社提供
专利名称：Method of heat treating a fastening
member
发明人：Tianjun Liu申请号：US156510申请日：20170717公开号：US11028457B2公开日：20210608
专利附图：
摘要：A method of heat treating a fastening member having a head portion, a shankportion, and a thread portion includes hardening the fastening member to a firsthardness value. Hardening of the fastening member includes heating the fastening
member at a first pre-set temperature value. The method also includes tempering thefastening member at a second pre-set temperature value to a second hardness value.The method further includes induction tempering the thread portion of the fasteningmember. Induction tempering of the thread portion includes heating the thread portionat a third pre-set temperature value to a third hardness value. The third hardness valueof the thread portion is less than the second hardness value of the head portion and theshank portion.
申请人：Caterpillar Inc.
地址：Peoria IL US
国籍：US
代理机构：Brannon Sowers & Cracraft
更多信息请下载全文后查看
