Title: Low-carbon steel scissors and its heat-treating technology
Application Number: 85107920 Application Date: 1985.10.25
Publication Number: 1010819 Publication Date: 1987.05.06
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: B26B13/00,C21D9/18,C23C8/22,C23C8/32
Applicant(s) Name: Shaanxi Mechanical College Address:
Inventor(s) Name:
Attorney & Agent: NI JINRONG YANG YINXUE
Abstract:
     In this invention, the raw materials of the scissors choose low-carbon steel and are formed by a single punching. Then the reasonable surface-ruggedizing technology with chemical heat treatment is applied on them. During the chemical heat treatment, the low-temperature, high-speed carburizing technology or high-speed co-osmosising technology of carbon and nitrogen or nitrogenation can be used. As the low-carbon steel has good forming performance by punching, the wear of dies and the dissipation of electric energy can be decreased. The price of low-carbon steel is cheap and its sources are wide. After surface-ruggedizing with chemical heat treatment, the hardness of knife-edges of the low-carbon steel scissors can reach above HRC 60 and their core areas still keep enough tenacity, so that the durability of the scissors is notedly increased.
Time: 5