Strengthening method for bimetal cylinder body spline of hydraulic plunger pump

Abstract

The invention discloses a strengthening method for a bimetal cylinder body spline of a hydraulic plunger pump, relates to a machining method of the bimetal cylinder body spline of the hydraulic plunger pump, and discloses the strengthening method for the bimetal cylinder body spline of the hydraulic plunger pump. Strengthening treatment is performed, specifically, when a cylinder body blank is slowly cooled to 850 DEG C, quenching liquid is adopted for rapid cooling, after the temperature of the cylinder body blank is lower than 200 DEG C, the cylinder body blank stays in a cooling area for a period of time; and tempering treatment and discharging are performed, specifically, different tempering temperatures are selected according to the hardness requirement of a part for tempering, and discharging is performed after heat preservation is performed for a certain time. After a spline of the cylinder body is subjected to strengthening treatment, the subsequent nitriding treatment or medium-high frequency treatment procedure of the cylinder body can be replaced, the machining period of a cylinder body finished product is shortened, and procedures are reduced. The spline is pulled after the spline area of the cylinder body is subjected to strengthening treatment, so that the problems of spline deformation and spline cracking in the nitriding or medium-high frequency process are solved. In addition, after the spline area of the cylinder body is subjected to strengthening treatment, good comprehensive performance is achieved, and better impact resistance is achieved.

Description

technical field [0001] The invention relates to a processing method for a bimetallic cylinder spline of a hydraulic plunger pump, in particular to a strengthening method for a hydraulic plunger pump bimetallic cylinder spline. Background technique [0002] The hydraulic plunger pump relies on the reciprocating movement of the plunger in the cylinder, and the reciprocating direction of the plunger is parallel to the central axis of the cylinder, so that the reciprocating movement of the plunger in the plunger hole produces a volume change to achieve oil pressure and oil absorption. Because the plunger pump has the advantages of high rated pressure, compact structure, high efficiency and convenient flow adjustment, it is widely used in hydraulic presses, engineering machinery and ships. Since the cylinder is the core component of the plunger pump, the service life and stability of the cylinder are directly related to the quality of the plunger pump. In the process of processin...

AI Technical Summary

Problems solved by technology

However, the use of the nitriding process or the medium and high frequency process still has the following defects in the processing process: 1. The nitriding process or the medium and high frequency process is arranged as a process in the processing of the parts, which increases the processing cycle of the product and increases the circulation. The manufacturing cost and management cost of the bimetal cylinder have increased to a certain extent; 2. Nitriding treatment or medium and high frequency treatment of the cylinder spline only improves the mechanical properties of the spline surface, and the performance of the spline core remains unchanged; 3. The splines after nitriding treatment have deformation problems, and the splines after medium and high frequency treatment not only have deformation problems, but also have the risk of cracking

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