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Preparation method of valve plate and valve plate

A distribution plate and substrate technology, applied in the field of high-pressure plunger pump preparation, can solve problems such as burnt plate and distribution pair wear

Pending Publication Date: 2021-05-04
ZHEJIANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In such a harsh working environment, the distribution pair is prone to wear and even burnout

Method used

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  • Preparation method of valve plate and valve plate
  • Preparation method of valve plate and valve plate

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Embodiment Construction

[0033] Specific embodiments of the present invention will be described in detail below. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0034] In the present invention, unless stated otherwise, the used orientation words such as "upper and lower" usually refer to the orientation in the state of assembly and use. "Inner and outer" refer to inner and outer relative to the outline of each component itself.

[0035] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It should be understood that the data so used may be interchanged under appropriate circumstances for the embodiments of the invention described herein. Furthermore, the terms "comprising" a...

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Abstract

The invention relates to the technical field of preparation of high-pressure plunger pumps, and discloses a preparation method of a valve plate and the valve plate. The preparation method of the valve plate comprises the following steps that S1, the surface of a base body of the valve plate is treated; S2, a composite coating is prepared through cold spraying; S3, heat treatment is performed on the coating; and S4, post-treatment is performed on the coating. According to the technical scheme, firstly, the composite coating with the self-lubricating anti-attrition characteristic is designed on the base body of the valve plate, and then the self-lubricating anti-attrition coating is formed on the surface of the base body through the cold spraying technology. Through the formula of the self-lubricating anti-attrition coating, the double effects of micro-area in-situ forging and solid-phase diffusion can be achieved, and the binding force and the compact degree of the coating are effectively improved, so that the anti-attrition capacity of the friction surface of the flow distribution pair is improved; according to the cold spraying technology, the formula of the composite coating is designed in a tailorable mode, the requirements of different working conditions are met, the service life is prolonged for a long time, meanwhile, the cold spraying technology is flexible, the thickness is controllable, the number of operation procedures is small, and the production cost can be greatly reduced.

Description

technical field [0001] The invention relates to the technical field of preparation of high-pressure plunger pumps, in particular to a method for preparing a flow distribution plate and the flow distribution plate. Background technique [0002] The plunger pump is the most widely used hydraulic pump in the current hydraulic system. Due to the high working pressure of the plunger pump, its friction pair also needs to bear a high load, which will aggravate the wear of the friction pair. The existing research on the friction and wear characteristics of the distribution pair of axial piston pumps is mainly carried out at low and medium speed conditions (≤1200r / min), which is far less than the rated speed of the axial piston pump. [0003] There are three main ways to produce the distribution plate at present: one is to use the whole brass to make it, and the other is to use 38CrMoAl, 42CrMo and other low-alloy steel after quenching and tempering to improve the wear resistance. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F17/00C23C24/04C21D9/00C21D1/26B24C1/08F04B1/188F04B1/2042
CPCC23F17/00C23C24/04C23C24/045C21D9/0068C21D1/26B24C1/08F04B1/188F04B1/2042
Inventor 王晓明王冬云王琳琳唐伯恩李飞越
Owner ZHEJIANG NORMAL UNIVERSITY
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