Low carbon martensite heat processing method

Abstract

A low carbon martensite heat processing method comprises the following methods: carrying out heating, heat insulation and quenching, and controlling the surface of a reinforcing steel bar. The low carbon martensite heat processing method utilizes low carbon steel bars or low carbon alloy steel bars to carry out processing, the low carbon steel bars or the low carbon alloy steel bars has a self tempering performance and a high mechanical performance, replaces mediate carbon alloy steel bars, has an identical high mechanical performance after being processed, and meanwhile is black. The low carbon martensite heat processing method eliminates tempering, saves equipment, power and factories, and improves old production lines to save cost. The low carbon martensite heat processing method is combined with hot-rolled steel bars, processing is carried out with the waste heat of the steel bars, steel is saved for constructional engineering, and economic benefits are remarkable.

Description

technical field [0001] The invention relates to the field of metal materials, in particular to a heat treatment method for bluing and low-carbon martensite of high-strength building steel bars. Background technique [0002] Traditional diamond-bonded abrasive tools can be divided into resin bond, vitrified bond, metal bond (including electroplating and sintering) diamond tools and other types according to different bonds. The extensive application of these diamond tools in production has greatly improved The overall level and ability of the processing industry have also changed the original appearance of the processing industry, but at the same time some of their disadvantages have been gradually exposed, whether it is single-layer electroplating or multi-layer sintered (heat-cured) diamond-bonded abrasives Tools and abrasives are only mechanically embedded in the coating or matrix metal, and the interface lacks bonding force. In high-efficiency grinding operations with heav...

AI Technical Summary

Problems solved by technology

[0002] Traditional diamond-bonded abrasive tools can be divided into resin bond, vitrified bond, metal bond (including electroplating and sintering) diamond tools and other types according to different bonds. The extensive application of these diamond tools in production has greatly improved The overall level and ability of the processing industry have also changed the original appearance of the processing industry, but at the same time some of their disadvantages have been gradually exposed, whether it is single-layer electroplating or multi-layer sintered (heat-cured) diamond-bonded abrasives Tools and abrasives are only mechanically embedded in the coating or matrix metal, and the interface lacks bonding force. In high-efficiency grinding operations with heavy loads, the abrasive grains or coating of the grinding wheel are easy to fall off. In order to increase the holding force, the bonding must be increased. As a result, the exposed height of abrasive grains and chip space will be reduced, and the grinding wheel will be easily blocked.