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Quenching of steel pipes
Sources: this site Click: Date: 2016-2-7 19:25:38
Quenching is heated to above the critical temperature, and incubated for a period of time, and then quickly into the quenching agent, its temperature is suddenly reduced to greater than the critical cooling rate of speed rapid cooling, but mainly to martensite notequilibrium microstructure of the heat treatment method. The quenching can increase the strength and hardness of the steel pipe, but to reduce its plasticity. Quenching in the quenching agent commonly used are: water, oil, alkaline and salts solution.
45 steel after quenching, tempering, heating temperature is usually 560 ~ 600 ℃, the hardness requirement for HRC22 to 34. Quenched and comprehensive mechanical properties, so the relatively wide range of hardness. If the drawing has the hardness requirements, it is necessary to adjust the tempering temperature according to the requirements of the drawings in order to ensure the hardness. As some axle parts require high strength, high hardness requirements; some gear, the keyway shaft parts, but also because of the quenched and tempered for milling interpolation processing, lower hardness requirements. Tempering time, depending on the hardness requirements and the size of the workpiece depends on the tempering temperature hardness after tempering, tempering time, but must back through, we believe that the general workpiece Tempering time in total more than one hour.seamless steel pipe
45 steel after quenching, tempering, heating temperature is usually 560 ~ 600 ℃, the hardness requirement for HRC22 to 34. Quenched and comprehensive mechanical properties, so the relatively wide range of hardness. If the drawing has the hardness requirements, it is necessary to adjust the tempering temperature according to the requirements of the drawings in order to ensure the hardness. As some axle parts require high strength, high hardness requirements; some gear, the keyway shaft parts, but also because of the quenched and tempered for milling interpolation processing, lower hardness requirements. Tempering time, depending on the hardness requirements and the size of the workpiece depends on the tempering temperature hardness after tempering, tempering time, but must back through, we believe that the general workpiece Tempering time in total more than one hour.seamless steel pipe
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