The significance of precision rack heat treatment for pipe cutting machines

The significance of precision rack heat treatment for pipe cutting machines

The entire body of the pipe cutting machine is made of steel, so some positions of the automatic cutting machine must be annealed during the production process. Annealing of steel is a heat treatment method that heats the steel to a temperature that causes or partially changes, and then slowly cools it through insulation and insulation. Simply put, annealing refers to heating steel to a certain temperature and insulation for a period of time, then slowly cooling it, which is called annealing.

The purpose of annealing is to solve structural defects, improve the mechanism to homogenize the composition and optimize the crystal, enhance the physical properties of steel, and reduce internal stress; At the same time, it can reduce strength, improve plastic deformation and ductility, and improve chip production and processing characteristics. Therefore, annealing is not only to better remove and improve the structural defects and thermal stress left by the previous process, but also to prepare in advance for the subsequent process flow. Therefore, annealing belongs to the semi-finished product processing heat treatment, also known as pre heat treatment.

Because plasma cutting machines belong to a type of initial processing equipment, there is no need to go through many complicated process flows. Only one point is ensured, and the equipment failure rate is low, which can not delay customer production and improve productivity.

The surface heat treatment of gear racks can be divided into the following categories in terms of technology.

1. Surface heat treatment is the process of rapidly heating the surface of cast iron to above the Curie temperature, but before the heat is transmitted to the core, it is rapidly cooled. This allows the surface layer to be quenched in the austenitic structure without any internal changes, achieving the goal of surface hardening without any changes to the core. Suitable for low-carbon steel.

2. Organic chemical heat treatment refers to a heat treatment process in which the molecules of a chemical molecule are infiltrated into the surface layer of a workpiece based on their ability to spread at high temperatures, in order to change the composition and structure of the surface layer of the workpiece and achieve a special arrangement and characteristics of the surface layer of steel. According to the different types of infiltrating elements, organic chemical heat treatment can be divided into four methods: nitriding, high-frequency quenching, cyanide, and metal infiltration material method.

High frequency quenching: also known as nitriding, is the entire process of nitrogen atoms infiltrating the surface layer of steel. Its significance is to enhance the strength and wear resistance of the surface layer, as well as to enhance its fatigue limit and corrosion resistance. At present, the high-frequency quenching method is used in production and manufacturing.

Nitriding: Nitriding is the entire process of instigating oxygen atoms to penetrate into the surface layer of steel. It also endows high carbon steel workpieces with the surface layer of medium carbon steel, and through heat treatment and ultra-low temperature quenching, the surface layer of the workpiece has high toughness and wear resistance, while the core part of the workpiece still maintains the ductility and plastic deformation of high carbon steel.

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