High-performance dual-hardness piston for slurry pump and preparation method thereof

Abstract

The invention provides a high-performance dual-hardness piston for a slurry pump and a preparation method thereof, and the preparation method specifically comprises the following steps: heating and defoaming a root material according to a first process flow, adding a first raw material agent for treatment, pouring the treated root material to the root of a piston steel core, obtaining a first root temperature value of the root material, and obtaining a second root temperature value of the root material; acquiring a second root temperature value of the root material after a first preset time; the heating layer is controlled to heat the pouring mold according to the first heating temperature value; the skirt material is heated and defoamed according to a second technological process, a second raw material agent is added for treatment, and the treated skirt material is poured to the skirt of the piston steel core; controlling a heating device to heat for a first heating time according to the first heating temperature value; and heating of the heating layer is stopped after the first heating time, and the piston steel core with the poured root material and skirt material is subjected to demolding and vulcanization treatment after the second preset time.

Description

technical field [0001] The invention relates to the technical field of manufacturing, in particular to a high-performance dual-hardness piston for a mud pump and a preparation method thereof. Background technique [0002] The application of the piston is very extensive, mainly used in the reciprocating motion of various pumps in the fields of oil drilling, construction machinery, mining equipment, etc. The suction and discharge of the mud pump is through the linear reciprocating motion of the piston in the cylinder liner, and the outward conveying is relatively high. pressure. In the drilling pump, the piston is subjected to high temperature, high pressure and high corrosion working environment. It is a key part and a high wear part, and it is the weak link of the drilling pump. Usually the service life is 200~300 hours. Once the piston fails, it cannot seal the mud leakage, and the cost of stopping the pump and replacing it is very high. The main reason for the inability ...

AI Technical Summary

Problems solved by technology

The main reason for the inability to seal the mud is that the sealing rubber at the piston is old and damaged. Therefore, how to improve the service life of the piston has become a major problem to be solved in this industry.

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