Fax: 0412-3770688
Phone number: 18842004222
Website: www.hcjsnhcl.com
Address: Nancai Tie Village, Pailou Town, Haicheng City, Liaoning Province
Magnesium ball can be improved by heat treatment strength and hardness, the following provides various heat treatment effects, light burning magnesium ball you can choose the appropriate heat treatment according to the situation. Surface quenching is recommended if only to increase hardness. The purpose of nodular iron normalizing is to obtain pearlite matrix structure, and refine grain, uniform structure, in order to improve the mechanical properties of castings. Sometimes normalizing is also the preparation of ductile iron surface quenching in the organization, normalizing high temperature normalizing and low temperature normalizing. The high temperature normalizing temperature is generally not more than 950 ~ 980℃, and the low temperature normalizing temperature is generally heated to the co-folding temperature range of 820 ~ 860℃. After normalizing, it is generally necessary to deal with four people in order to eliminate the internal stress generated when normalizing.
In order to improve the mechanical properties of ductile iron, castings are generally heated to 30 ~ 50℃ above Afc1 (Afc1 represents the final temperature formed by A during heating), and then quenched into oil to obtain martensite structure after heat preservation. In order to properly reduce the residual stress after quenching, the general quenching should be tempered, low temperature tempering structure is tempered martensite plus residual bainite and spherical graphite. This kind of structure has good wear resistance and is used for parts requiring high wear resistance and high strength. Medium temperature tempering temperature of 350-500 ℃ after tempering structure is tempered trostenite plus spherical graphite, suitable for the requirements of good wear resistance, stability and elasticity of the thick parts. The high-temperature tempering temperature is 500-60D ℃, and the tempered structure is tempered Soxhlet for spherical graphite, which has a good combination of toughness and strength, so it is widely used in production.
Magnesium ball can be improved by heat treatment strength and hardness, the following provides various heat treatment effects, light burning magnesium ball you can choose the appropriate heat treatment according to the situation. Surface quenching is recommended if only to increase hardness. The purpose of nodular iron normalizing is to obtain pearlite matrix structure, and refine grain, uniform structure, in order to improve the mechanical properties of castings. Sometimes normalizing is also the preparation of ductile iron surface quenching in the organization, normalizing high temperature normalizing and low temperature normalizing. The high temperature normalizing temperature is generally not more than 950 ~ 980℃, and the low temperature normalizing temperature is generally heated to the co-folding temperature range of 820 ~ 860℃. After normalizing, it is generally necessary to deal with four people in order to eliminate the internal stress generated when normalizing.
In order to improve the mechanical properties of ductile iron, castings are generally heated to 30 ~ 50℃ above Afc1 (Afc1 represents the final temperature formed by A during heating), and then quenched into oil to obtain martensite structure after heat preservation. In order to properly reduce the residual stress after quenching, the general quenching should be tempered, low temperature tempering structure is tempered martensite plus residual bainite and spherical graphite. This kind of structure has good wear resistance and is used for parts requiring high wear resistance and high strength. Medium temperature tempering temperature of 350-500 ℃ after tempering structure is tempered trostenite plus spherical graphite, suitable for the requirements of good wear resistance, stability and elasticity of the thick parts. The high-temperature tempering temperature is 500-60D ℃, and the tempered structure is tempered Soxhlet for spherical graphite, which has a good combination of toughness and strength, so it is widely used in production.