Heat treatment process of thin wall bearing know about the long position

What is a thin-walled bearing? In order to get the bearing low friction torque, high rigidity, good rotation accuracy, use the small diameter of steel ball. The use of hollow shaft, ensure the lightweight and wiring of the space. Thin wall bearing has realized the extremely thin cross section of the bearing, also has realized the product miniaturization, lightweight. The diversity of products extends its application scope. Today, leary bearing technical personnel with you about bearing heat treatment process. ( 1) The main reason for the heat treatment deformation is one of the main causes of the distortion of bearing ring in the process of heat treatment heating, cooling, uneven surface of the ring with the internal heat bilges cold shrink and organization transformation is not produced by thermal stress and organization stress at the same time. When the ring in plastic deformation of the whole deformation of swell and shrink diameter direction; When a local plastic deformation is characterized by the roundness and cylindricity error. Due to quenching oil cooling speed, far more than ring in the furnace heating speed, poor thin wall bearing ring stiffness at the same time, so the deformation of the part is produced in the process of cooling. There are many influence factors of bearing ring heat treatment deformation, every can reduce the thermal stress and organization stress in the process of heat treatment method, can reduce the deformation of ring. From the point of the heat treatment process, by reducing the quenching temperature and holding time is controlled properly, improve the quenching oil temperature, reduce the stirring speed of quenching oil can effectively reduce the deformation of the ring. Outside diameter larger thin wall bearing ring, due to its poor rigidity, heat treatment when under the effect of thermal stress and organization stress, can generate large deformation. To control the deformation, therefore, must develop a proper heat treatment process, control of thermal stress and organization stress. ( 2) The original heat treatment process of thin wall bearing the original heat treatment process is: the quenching temperature 855 ℃, the heating time for 30 min; Quenching oil temperature 100 ℃, a ring, the car increase after processing suitable to stress annealing; The hardening stage quenching heating temperature is controlled properly, the reasonable control of quenching cooling rate; Before quenching heating oil to ditch water glass, asbestos rope jam or refractory soil; With protective atmosphere heating and so on all can reduce oil groove cracks. Improve the structure, or oil in the oil groove groove shape, avoid straight oil groove and sharp-angled effect to control the oil groove also have a positive role in the formation of crack. If you want to choose and buy, such as cross section thin-walled bearing, industrial robot bearing, thrust bearing and other equipment, welcome your consultation in jiaxing bearing co. , LTD. , we not only provide you with comprehensive information of equipment, also provide you with excellent equipment and perfect service, look forward to cooperation with you! A: there are five important reasons for the angular contact ball bearing fault to understand the next: thin wall bearing maintenance and repair methods have?