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Address: No. 301, Xujia Village, Jingxi Town, Minhou County, Fuzhou City, Fujian Province, China
Fuxing Avenue, Jinan District, Fuzhou City, Fujian Province, China
Mobile phone: +86 591 83629866、83622555
Fax：+86 591 83629866、83622555
What should I do if the Gearbox used for rolling mills from China manufacturer breaks down?
Gearbox used for rolling mills from China manufacturer is an important equipment in the rolling mill device. It has two main functions. One is to increase the low torque of the motor by a certain proportion to the high rolling torque required by the rolling mill when rolling steel. The other is The speed of the motor is transformed into the rolling speed required by the rolling mill through a certain speed ratio to meet the requirements of the rolling process. Therefore, the running status of Gearbox used for rolling mills directly affects the normal production of the entire rolling mill.
When the bearing chamber of Gearbox used for rolling mills has abrasion problem, it can be considered whether it is due to poor working conditions. During long-term operation, the surface of the bearing chamber is subjected to the squeezing force of the outer ring of the bearing and the composite mechanical force, resulting in permanent deformation. However, the poor retreatability of metal materials is likely to cause a fit gap. If the gap is not discovered and measures are taken in time, the gap will continue to expand and directly cause the bearing chamber to wear.
In view of the wear problem of the Gearbox used for rolling mills bearing chamber, the traditional solutions mainly rely on machining after surfacing, thermal spraying and brush plating. There is no good repair method to reduce the waste of money and time, and both There are certain drawbacks. The new repair method is to apply polymer composite material on the part to be repaired, and then use a knife edge ruler to scrape the reference size along the reference surface of the bearing chamber. Polymer composite material is a kind of metal repair and protection composite material that is resistant to high temperature, strong corrosion and can be machined. This material has good adhesion and mechanical properties. It not only has the strength and hardness of metal, but also Retreat, the application of polymer materials can be repaired without disassembly, free of machining, and no thermal stress of repair welding, and the repair thickness is not limited.
Precautions during the overhaul of Gearbox used for rolling mills from China manufacturer
1) Before assembling the bearing, check whether the inner ring, outer ring, rolling element, and cage of the bearing are intact and whether the operation is flexible.
2) Wash the bearings and shafts with kerosene before assembling.
3) It is forbidden to tap the bearing directly with your hands, and tap lightly with a copper rod.
4) Bearing heating temperature ≤120℃.
5) Reinstall the new bearing only after the shaft has cooled down completely.
6) Wrap the removed oil pipe joints with clean plastic cloth. When reinstalling, ensure that the oil pipes are unblocked and the oil pipes are firmly fixed.
7) When applying the sealant on the joint surface of the upper and lower boxes, apply evenly without breaking.