Wheel-like braking disc production method and wheel-like braking disc produced by using wheel-like braking disc production method

Abstract

The present invention relates to a wheel-like braking disc production method and a wheel-like braking disc produced by using the wheel-like braking disc production method. According to the present invention, during the wheel-like braking disc casting process, an integral and annular rib plate is additionally arranged on the heat dissipation rib top surface of the heat dissipation surface of a braking disc, the annular rib plate and the braking disc are subjected to one casting molding, and the heat dissipation rib top surfaces are connected one by one to form a stable annular frame structure with double rings arranged on the upper surface and the lower surface; during the cooling solidification process after the casting, the annular rib plate on the heat dissipation rib top surface is firstly solidified so as to fix a heat dissipation rib, such that the shrinkage is significantly uniform when the cast is cooled, and the warping deformation generated due to the asymmetric geometrical size of the cast can be avoided; the machining allowance top surface of the friction surface of the braking disc is designed into to a tapered surface so as to increase the cast deformation resistance and make the cast maintain the stabilized shrinkage; and after the cooling molding, the annular rib plate is removed through the machining and the machining allowance top surface of the friction surface is processed into the plane, such that the cast structure shape is not affected, and the product dynamic balance detection qualification rate is substantially improved.

Description

technical field [0001] The invention relates to a production method of a wheel-mounted brake disc and a wheel-mounted brake disc using the method, in particular to a wheel-mounted brake disc used in urban express trains, railway passenger cars and high-speed EMUs during the manufacturing process. A warping deformation method and a wheel-mounted brake disc using the method. Background technique [0002] At present, the basic brakes of urban express trains, railway passenger cars and high-speed EMUs all use disc brake devices. The function of the disc brake device is to make the brake pads vertically press the wheel or The friction surface of the shaft-mounted brake disc generates friction force, thereby generating braking torque, which converts the kinetic energy and potential energy of the vehicle into heat energy, so as to achieve the purpose of decelerating or stopping the vehicle. Therefore, the brake disc is a key component that converts the kinetic energy and potential...

AI Technical Summary

Problems solved by technology

[0003] The invention patent with the publication number CN102069148A discloses a casting method for brake discs for high-speed locomotives, which includes the following steps: solidification simulation, sand core design, core box production, core making, core assembly, melting and casting, box shaking and Cleaning, the invention adopts the method of combined casting without box stacked cores, and the sand core is designed according to the brake disc, and the friction surface of the brake disc for friction is set in a plane. Although the production efficiency is high, the wheel brakes during the casting process. Due to the geometric asymmetry of the disk, the cooling on one side of the heat dissipation surface is not good, resulting in uneven cooling, and the shrinkage rate on both sides of the casting is different. Even if the geometric dimensions meet the requirements of the drawings through machining, the uneven thickness caused by the deformation of the entire disc circumference will still make the dynamic balance test fail and become irreparable waste

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