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Heat treatment method of pipe welding machine
Release time:
2018-12-06 11:57
Welded pipe machine is currently the most popular application of a welded pipe processing machine, we come to know it. It is famous for its high processing efficiency and good quality of welded pipes.
Welded pipe machine is currently the most popular application of a welded pipe processing machine, we come to know it. It is famous for its high processing efficiency and good quality of welded pipes. The life of the roll mainly depends on the internal performance and working force of the roll, and the internal performance includes strength and hardness. To make the roll have sufficient strength, mainly from the roll material to consider; hardness usually refers to the hardness of the work surface of the roll, which determines the wear resistance of the roll, to a certain extent, also determines the service life of the roll, through reasonable material selection and heat treatment methods can meet the hardness requirements of the roll.
The quenching process is the concentrated embodiment of the welding pipe roll machining process. To understand the processing technology of welded pipe roll machine, we must first understand the quenching process. After rough turning and semi-finishing turning, the roll should be quenched and tempered at low temperature before finishing turning. Quenching is to change the microstructure of the roll, change the withdrawn spherical pearlite into tempered martensite and a small amount of retained austenite, and improve the surface hardness and wear resistance of the roll. Obtain sufficient strength and toughness; Extend the service life of rolls. The roll may be slightly deformed after quenching, so finishing should be carried out after annealing. After quenching, due to the rapid cooling of the organization to produce a large internal stress, easy to produce cracks, the tempering can eliminate the internal stress, prevent cracking; quenching martensite and residual austenite in the quenching organization.
Jiangsu Nanyang Machinery Manufacturing Co., Ltd. produces: ZG series high-frequency welded pipe unit, GW series cold bending forming unit, BG series stainless steel pipe making unit, FG high-precision composite pipe production line, roll mold.
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