Bearing heater application in metal heat treatment

The working principle of the bearing heater is to use the metal to generate eddy currents in the alternating magnetic field and cause itself to generate heat. The bearing heater is usually used in the heat treatment of metals and the like. The principle is that when a thick metal is in an alternating magnetic field, current will be generated due to electromagnetic induction. When the thicker metal generates current, the current will form a spiral flow path inside the metal, so that the heat generated by the current flow is absorbed by the metal itself, which will cause the metal to heat up quickly. Bearing heaters, also called bearing induction heaters, induction heaters, electromagnetic induction heaters, are a type of heating tool. Heating element and platform integration, safe, reliable, easy to use. Mainly used for bearing, gears, bushings, bushings, diameter rings, pulleys, shrink rings, connectors and other types of metal heating, bearing heaters to expand through heating, to meet the need for interference assembly. Features include: rapid setting of plate temperature, alarm temperature, real-time temperature display, automatic over-temperature protection, automatic insulation and so on.

Installation and commissioning of short-circuit heating: The main machine is a special-structure transformer. The movable yoke iron is used to directly penetrate the sleeve bearing or other heated workpieces. During operation, the main unit is turned on, and the workpiece is heated in response to a short-circuit current induced in the secondary winding. The yoke is placed on the end face of the main core. Check that the connection between the plug and the socket is the same and that the grounding is good. Then insert the plug into the power socket with the control switch. Turn the function selection switch to the manual control position and close the power supply. The red indicator light is on. Press the start button, the host is powered on, then the green indicator light is red light; press the stop button, the red light is green. At this point, debugging is completed and it can be put into use. According to the inner diameter of the bearing, the operation program selects the corresponding yoke, and the yoke of the bearing on the string is placed on the end surface of the main iron core, and it should be in good agreement. During the heating process, the temperature rise at the end plane of the inner ring of the bearing is measured with a point thermometer. When the temperature rise meets the requirements, count the time, stop the heating, remove the yoke, and remove the bearing to assemble it. Continuously heat the bearings of the same specification, set the function selection switch to the time-controlled position, set the heating time, and automatically turn off the power when the bearing is heated by the bearing heater until the set time. After the work is completed, switch the function selection switch to the stop position and cut off the position.....

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