High speed steel that should be cold treated may be hardened in accordance with the usual practice for that steel. During the actual heat treatment, the P8 steel tool is heated in the range of 1260 ~ 1290 ℃, while the P9 steel tool is heated in the range of 1220 ~ 1240 ℃. It… Read more Sclerosis
Tag: heat treatment
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
Industrial cold treatment of steel
Metallographic structure: tempered martensite + carbides + retained austenite, in which the content of retained austenite is large, the size of carbides is uneven, and some particles are larger, and the large carbides also have edges and corners. Cr12MoV steel belongs to ledeburite steel. Although the large eutectic carbon compounds have been crushed during forging,… Read more Industrial cold treatment of steel
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
hot working die steel Industrial cold treatment
H13 steel is a kind of hot working die steel widely used abroad. In recent years, H13 steel has been widely used to manufacture hot working dies for aluminum profiles in China. The hot extrusion die of aluminum profile is subjected to high temperature (4500c-5200c), high pressure and severe friction of aluminum material in the… Read more hot working die steel Industrial cold treatment
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
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
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
What is cryogenic treatment？
Since the 1920s and 1930s, with the rapid development of material science, the principle and technology of heat treatment are becoming more and more mature. It is difficult to improve the strength and toughness of metal by conventional heat treatment process, but in many cases, the strength and initial properties of existing materials, especially the… Read more What is cryogenic treatment？