Production method of colliding head shell of tramcar buffer and product

Abstract

The invention discloses a production method of a colliding head shell of a tramcar buffer. The production method is characterized by comprising the following steps: processing aluminum alloy into a metal foam molding mold in the shape of the colliding head shell of the tramcar buffer, injecting polystyrene resin particles into a mold cavity, heating and expanding the polystyrene resin particles to make the polystyrene resin particles mutually melt, opening the mold to take a white foam product out when the pressure reaches 5 kg, putting the white foam product into vibration filling sand of a sand box, pouring 1600 DEC G molten steel through a water port, filling the burnt empty part of the white foam with the molten steel after the white foam product is burnt by the molten steel, starting a vacuum pump communicated with the sand box, vacuumizing the sand box till the pressure is 0.4Pa, cooling the sand box to strip the die, and cleaning the sand to obtain the weldless colliding head shell of the tramcar buffer. The colliding head shell of the tramcar buffer is molded without gas cutting, bending and heating molding, and welding, so that the production cost is reduced by 60%, the impact resistance is enhanced by 50%, and the service life is prolonged from one year to four years.

Description

technical field [0001] The present invention relates to a bumper shell of a mine car buffer, in particular to a production method and product of a bumper shell of a mine car buffer. Background technique [0002] Domestic mine cars transport coal in mines using mine car fleets, and there will be collisions between mine cars and mine cars when going up and down during transportation. In order to alleviate the collision, a buffer must be installed, and the buffer is made of buffer The device meets the shell and consists of high-strength rubber. At present, domestic manufacturers of mining vehicles with buffers all use steel plates to be gas-cut into blocks, bent and heated to make shapes, and then welded into shells. This processing method has defects such as high cost, easy generation of slag inclusion in welding, impermeable welding, and missing welding, which cause quality problems in the shell. More importantly, the stress of the welded bumper bumper shell is concentr...

AI Technical Summary

Problems solved by technology

This processing method has defects such as high cost, slag inclusion, impermeable welding, and missing welding, which cause quality problems in the shell.

More importantly, the stress of the welded bumper bumper shell is concentrated on the weld seam when it collides. After multiple collisions, the weld seam will burst and deform and cannot be used. Huge loss of life and property