Band saw blade heat treatment technology

Abstract

The invention provides band saw blade heat treatment technology. The technology comprises the following steps: A. preheating: preheating a band saw blade and removing the moisture on the surface of the band saw blade, wherein the temperature ranges from 350 DEG C to 400 DEG C and comprises 350 DEG C and 400 DEG C; the time ranges from 20 minutes to 40 minutes and comprises 20 minutes and 40 minutes; B. salt bath nitriding: carrying out salt bath nitriding treatment on the surface of the band saw blade by using QPQ (quench-polish-quench) nitriding salt so that active nitrogen in the QPQ nitriding salt permeates a metal lattice of the band saw blade, wherein the temperature ranges from 520 DEG C to 580 DEG C and comprises 520 DEG C and 580 DEG C; the salt bath nitriding time ranges from 10 minutes to 180 minutes and comprises 10 minutes and 180 minutes; C. salt bath oxidizing: carrying out salt bath oxidizing treatment on the band saw blade by using QPQ oxidizing salt to decompose cyanides on the surface of the band saw blade and form an oxidation film on the surface of the band saw blade, wherein the temperature ranges from 370 DEG C to 400 DEG C and comprises 370 DEG C and 400 DEG C; the time ranges from 15 minutes to 20 minutes and comprises the end value. The hardness and corrosion resistance of the band saw blade can be reinforced by adopting the band saw blade heat treatment technology.

Description

technical field [0001] The invention relates to the technical field of band saw blade treatment, and more specifically, relates to a band saw blade heat treatment process. Background technique [0002] The band saw blade is a band saw blade composed of a tough, sharp-toothed saw blade tensioned in a frame, which can cut hard materials such as metal. Since the band saw blade needs to cut materials with relatively high hardness, the band saw blade itself needs a great hardness. Therefore, in order to ensure the hardness of the band saw blade, heat treatment is required for the band saw blade. [0003] In the prior art, the conventional band saw blade heat treatment process often only includes two processes of quenching and tempering. There are no other heat treatment steps after the above process. The hardness of the band saw blade after the above steps can only reach 900HV0.2 (HV is the Vickers hardness, 900 is the Vickers hardness value, and 0.2 is the load value used for m...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a technical solution for the band saw blade heat treatment process to solve the problem of insufficient hardness of the band saw blade treated by the conventional band saw blade heat treatment process in the prior art introduced in the background art, and it is difficult to saw materials with relatively high hardness question

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