Method of making file

Abstract

Abstract PURPOSE: To make the promotion of improvement of the quality with a curving prevented during quenching, by means of processing a work of quenching under the condition with a file raw plate hung in the quenching furnace. CONSTITUTION: With a penetration hole 2 drilled in a position near point end part of a file raw plate 1 and a hanging lever 3 penetrated through this penetration hole 2, the work of quenching is processed by hanging down many of the file raw plates 1. Accordingly, even if a softness is provided in the file raw plate 1 due to a high temperature, a deformation is never caused due to the tare, reversely, even a curved file raw plate can be corrected to a straight form because of hanging. In such way, a curve during quenching can be prevented, further with no contact to the other files because of hanging method, and a uniform operation is made for the work of quenching and cooling, thus a quality can be improved. COPYRIGHT: (C)1980,JPO&Japio

Inventors

• 👤 Hiroshi Takahashi

Bibliographic Details