Inductive heating is an advanced, fast, and controllable heating method. Compared to traditional heating stove heating, oil bath heating, and torch heating, it is easy to generate oil fume, oil waste, and harmful human health. Inductive heating is safe and environmentally friendly. advantage.
The mounting force required to install a bearing or a ring-shaped workpiece increases rapidly as the bearing size increases from the self-lubricating bearing pad. Due to the installation force requirements, larger bearings cannot be easily pushed onto the shaft or into the bearing housing. Therefore, the bearings or housings or ring-shaped workpieces need to be heated before installation. The induction bearing heater can be compared with a transformer. Its working principle is to install a primary copper sleeve manufacturer's coil with more turns and a secondary coil with fewer turns on the same iron core. The voltage ratio between input and output is equal to the ratio of the number of coil turns. At the same time, the energy-free maintenance and maintenance of the bearing remain unchanged. Therefore, the secondary coil generates a large current under a low voltage condition. For Su Li brand bearing induction heaters, the bearing is a short-circuited single-turn secondary coil that passes a large current at a lower AC voltage, and therefore generates a lot of heat. The heater itself and the yoke are kept at normal temperature. Because this heating method can induce a current, the bearing is magnetized. It is important to ensure that the bearings are demagnetized in the future so that they do not attract metal magnetic debris during operation. All induction heaters have an automatic demagnetization function. The temperature difference between the bearing and the housing mounting position depends on the level of the interference fit and the bearing size. Normally, a bearing temperature of 80 to 90 ° C (144 to 162 ° F) above the shaft temperature is sufficient for installation. However, the heating temperature of the bearing must not be allowed to exceed 125 ° C (257 ° F), because the bearing material will undergo metallographic transformation at this time, resulting in changes in diameter or hardness. Local overheating must be avoided, especially the bearings cannot be heated with open flames. Wear clean protective gloves when installing heated bearings. Installation is facilitated by using a lifting (lifting) machine. Push the bearing to the installation position along the shaft to keep the bearing stationary and push until it fits firmly.
Author: Zhangjiagang City Shuanglong Wangting Oil Sliding Bearing Co., Ltd.
Website: http://www.zsl-bearings.com
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