Basis of cold treatment process

Cold treatment, also known as cold treatment, sub zero treatment and cryogenic treatment, is to continue cooling the steel parts quenched to room temperature at a temperature below MS, which is generally – 60 ~ – 190 ℃, so that the austenite transformation at room temperature has not completed transformation into martensite. The purpose of… Read more Basis of cold treatment process

Cryogenic treatment is actually the continuation of quenching

In addition to strengthening the forging process, a cryogenic treatment process is added to the normal die heat treatment. Cryogenic treatment is actually the continuation of quenching, which uses the degree of subcooling to increase the driving force of martensite transformation. As the cryogenic temperature decreases and the degree of undercooling increases, the transformation of… Read more Cryogenic treatment is actually the continuation of quenching

Cr12MoV steel cold heading die cryogenic treatment

Cr12MoV steel has high carbon content and chromium content, can form a large number of carbides and high-alloy martensite, so that the steel has high hardness and high wear resistance. At the same time, chromium also makes steel have high hardenability and tempering stability. Molybdenum increases the hardenability of steel and refines the grains. Vanadium… Read more Cr12MoV steel cold heading die cryogenic treatment

Cryogenic treatment process of mold conventional heat treatment

1.1040°C quenching and 580°C twice tempering, deep cooling (-196°C×24h), 150Cx30min tempering, nitriding 2.1040°C quenching and 590°C twice tempering, deep cooling (-196°C×24h), 100°Cx3omin tempering, nitriding. Two sets of molds for cryogenic treatment were used in another aluminum profile factory, and the production volume reached 9.2 tons per set. Calculated according to the quality standard of 0.1mm… Read more Cryogenic treatment process of mold conventional heat treatment

Application effect of cryogenic process

Application effect of cryogenic process 1. Effect of different cryogenic treatment processes on retained austenite in w6cr5mo4v2co steel (volume percent) In the process of cryogenic treatment, a large amount of retained austenite transforms into martensite, especially the supersaturated metastable martensite will decrease the supersaturation during the process from – 196 ° C to room temperature,… Read more Application effect of cryogenic process

Mechanism of cryogenic treatment

1. Elimination of retained austenite: generally, the retained austenite after quenching and tempering is about 8-20%, and the retained austenite will be further martensitized with the passage of time. In the process of martensite transformation, the volume expansion will be caused, which will affect the dimensional accuracy, and increase the stress inside the lattice, which… Read more Mechanism of cryogenic treatment

Cryogenic treatment technology

Technical index Temperature control range: – 250 ~ – 5 ℃ Cooling rate: 100 ℃ / h Temperature uniformity: ± 0.5 ℃ Control mode: temperature control intelligent instrument, automatic alarm after insulation Equipment: horizontal type, well type, box type and cabinet type Thermal insulation material: special thermal insulation material for aerospace Inner wall of low… Read more Cryogenic treatment technology

Cryogenic processing industrial refrigerator

The inner wall of low temperature box of industrial refrigerator is made of stainless steel, and the temperature is controlled by intelligent instrument. The system structure is simple, the parts are arranged compactly, and the operation is intuitive and simple. The cryogenic treatment equipment will continue the cooling process of quenched metal materials to achieve… Read more Cryogenic processing industrial refrigerator

The latest research trend of industrial cold treatment

At present, the research of cryogenic treatment technology has broken through the field of ferrous metals, and great achievements have been made in non-ferrous metals and powder metallurgy products. Cryogenic treatment is gradually combined with other processes and equipment, and its application scope is expanding day by day, and the prospect is broad. Cryogenic treatment… Read more The latest research trend of industrial cold treatment