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

cryogenic and ultra cryogenic treatment process

After heat treatment, the hardness and mechanical properties of steel are greatly improved, but there are still the following problems after heat treatment: 1. Retained austenite. The proportion of austenite is about 10% – 20%. Because austenite is very unstable, it is easy to transform into martensite when subjected to external force or environmental temperature… Read more cryogenic and ultra cryogenic treatment 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

Significance of each stage of industrial cold treatment

1) Cooling stage The purpose of slow cooling is to completely eliminate the residual stress. In the process of quenching and tempering, the residual stress will be produced in the metal matrix. During the transformation of retained austenite to martensite, the volume expansion will also increase the residual stress. Only slow cooling can offset the… Read more Significance of each stage of industrial cold treatment

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

The latest progress of cryogenic treatment

The latest progress of cryogenic treatment research: in recent ten years, especially in the past two years, domestic scientific research institutions headed by Gansu University of technology, Hebei Institute of technology and Central South University of technology have been committed to the research of cryogenic treatment process and mechanism of tool steel, die steel, cutting… Read more The latest progress of cryogenic treatment

Mechanism of cryogenic treatment

2) Mechanism of cryogenic treatment The quenching process of steel is the process of obtaining martensite, but quenching can not make all austenite in steel transform into quenching structure. After heat treatment of various steels, some austenite remains. The residual amount varies with the steel type and heating temperature, and there is a certain amount… Read more Mechanism of cryogenic treatment