Manufacturing method and device for wheel-mounted brake discs and wheel-mounted brake discs obtained through manufacturing method and device

Abstract

The invention relates to a manufacturing method for wheel-mounted brake discs. The manufacturing method includes the following steps that a casting device is manufactured; a mold core is manufactured; mold closing is conducted; smelting and pouring are conducted; mold dismantling, shakeout and cleaning are conducted; rough machining, heat treatment and finish machining are conducted on a casting; the two wheel-mounted braking discs are in butt joint and are integrally manufactured, and an integral casting is formed; and then the integral casting is separated into the two independent wheel-mounted braking discs. The invention further relates to a manufacturing device for the wheel-mounted brake discs. The manufacturing device comprises a casting system and a feeding system. The casting system comprises a sprue cup, a gate sprue, a cross gate, an ingate and a rectifying and filtering device. The feeding system comprises a dead head and a feeding patch. The manufacturing device further comprises the wheel-mounted braking disc I and the wheel-mounted braking disc II which are in butt joint to form the integral casting. By means of the manufacturing method and device, the problems of misrun, pores, cold shots and the like of the wheel-mounted braking discs due to accumulation of paint at the bottom of a rib plate are solved, the deformation problem is also solved, and size stability of the casting is facilitated.

Description

technical field [0001] The invention belongs to the technical field of vehicle braking systems, and in particular relates to a manufacturing method and device for a wheel-mounted brake disc suitable for high-speed trains, and a wheel-mounted brake disc obtained therefrom. Background technique [0002] The brake disc is the core component of the high-speed train braking system, which plays a key role in the high-speed train braking process. The high-speed train brake disc body prepared by the casting method has a more reasonable structure and internal organization, which is beneficial to improve the overall strength and heat dissipation capacity of the brake disc body, not only has a long service life, but also has a low production cost. The most widely used method for high-speed train brake discs. [0003] The wheel-mounted brake disc for high-speed trains is a brake disc installed on the wheels of high-speed trains. Compared with the axle-mounted brake disc in which two fr...

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Problems solved by technology

[0006] The above two invention patents prevent defects such as shrinkage cavities, shrinkage porosity, sand holes, air holes, slag holes, and cracks in the casting process of wheel-mounted brake discs by adjusting the positions of the pouring system and the feeding system. It is not conducive to the operation of paint work during molding. There is often paint accumulation at the bottom of the ribs, and the paint at this position is not easy to dry, which often causes casting defects such as lack of meat, pores, cold beans, etc. in the ribs. Such casting defects account for at least 15-30% of casting waste in common casting methods

In addition, the casting of the single structure is a flat casting. Due to its own structure, it often undergoes strong deformation during casting, heat treatment and processing, which in turn causes a large amount of waste and additional costs such as correction. Deformation defects account for at least 40-40% of casting waste. 70%

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