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Mud pump cylinder liner protected by nano-ceramic composite electrodeposition plating and preparation method of mud pump cylinder liner

A composite electrodeposition and nano-ceramic technology, which is applied to electrolytic inorganic material coating, components of pumping devices for elastic fluids, pump components, etc., can solve the problem that the surface roughness and concentricity of the coating cannot reach the finished cylinder liner. Accuracy requirements, low cost performance, time-consuming and labor-intensive problems, to achieve the effects of excellent performance, high coating adhesion, and improved production efficiency

Inactive Publication Date: 2019-08-16
宝鸡市石油矿山机械配件厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(4) The cost performance is not high - it has application advantages in areas with difficult logistics such as offshore platforms, jungle deserts, etc.
However, it has the following defects: (1) After high-temperature sintering, the roughness and concentricity of the coating surface are far from the precision requirements of the finished cylinder liner. After sintering, it must be on this layer of high-hardness wear-resistant cermet Perform honing, which is time-consuming and labor-intensive
(3) The thickness of the protective layer (cermet) is 0.5–1.5 mm, and precious alloy materials such as chromium and nickel are used, and the cost is high

Method used

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  • Mud pump cylinder liner protected by nano-ceramic composite electrodeposition plating and preparation method of mud pump cylinder liner
  • Mud pump cylinder liner protected by nano-ceramic composite electrodeposition plating and preparation method of mud pump cylinder liner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The mud pump cylinder liner protected by nano-ceramic composite electrodeposition plating, the structure is as follows figure 1, including a cylinder liner body 1, a nano-ceramic composite electrodeposition protective layer 2 is plated on the inner wall of the inner hole 11 of the cylinder liner body 1, and the thickness of the nano-ceramic composite electrodeposition protective layer 2 is 0.1 mm, saving a large amount of chromium , nickel, zirconium and other precious alloy materials, the surface roughness after plating meets the roughness requirements of the inner wall of the existing cylinder liner, and the size meets the dimensional accuracy requirements of the inner diameter of the cylinder liner, and the preparation method of the mud pump cylinder liner protected by nano-ceramic composite electrodeposition plating , the process such as figure 2 , which includes the following steps:

[0049] Step 1: Forging, select medium-carbon alloy steel castings or forging ma...

Embodiment 2

[0071] The mud pump cylinder liner protected by nano-ceramic composite electrodeposition plating includes a cylinder liner body 1, and a layer of nano-ceramic composite electrodeposition protective layer 2 is plated on the inner wall of the inner hole 11 of the cylinder liner body 1. A preparation method for a mud pump cylinder liner protected by deposition coating, comprising the following steps:

[0072] Step 1: Forging, complete the forging of the cylinder liner blank according to the specifications, there must be no forging defects such as inclusions, cracks, pores, etc., and normalize after forging;

[0073] Step 2: Rough turning, rough turning processing according to the drawing, with 3mm allowance for each part;

[0074] Step 3: heat treatment, quenching and tempering treatment, HBW285-325;

[0075] Step 4: Finish turning, except for the inner hole grinding amount of 0.3-0.4mm, the size and roughness of other parts are turned according to the drawings;

[0076] Step 5...

Embodiment 3

[0094] The mud pump cylinder liner protected by nano-ceramic composite electrodeposition plating includes a cylinder liner body 1, and a layer of nano-ceramic composite electrodeposition protective layer 2 is plated on the inner wall of the inner hole 11 of the cylinder liner body 1. A preparation method for a mud pump cylinder liner protected by deposition coating, comprising the following steps:

[0095] Step 1: Forging, complete the forging of the cylinder liner blank according to the specifications, there must be no forging defects such as inclusions, cracks, pores, etc., and normalize after forging;

[0096] Step 2: Rough turning, rough turning processing according to the drawing, with 3mm allowance for each part;

[0097] Step 3: heat treatment, quenching and tempering treatment, HBW285-325;

[0098] Step 4: Finish turning, except for the inner hole grinding amount of 0.3-0.4mm, the size and roughness of other parts are turned according to the drawings;

[0099] Step 5...

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Abstract

The invention discloses a mud pump cylinder liner protected by nano-ceramic composite electrodeposition plating and a preparation method of the mud pump cylinder liner. The mud pump cylinder liner includes a cylinder liner body, and a layer of nano-ceramic composite electrodeposition protective layer is plated on the inner wall of an inner hole of the cylinder liner body. The preparation method ofthe mud pump cylinder liner includes the following steps that forging and normalizing treatment after forging are carried out; rough turning is carried out; heat treatment is carried out; finishing turning is carried out; inner holes are grinded; inner holes are being subjected to quilted grinding; and a nano-ceramic composite electrodeposition protective layer is plated; and after cleaning and drying are carried out, the outer surface of the plated cylinder liner body is painted and marked, and then the cylinder liner body is packed for storage, and the production process is completed. According to the mud pump cylinder liner protected by nano-ceramic composite electrodeposition plating and the preparation method of the mud pump cylinder liner, the bonding force between the protective layer and a metal matrix is high, the abrasion resistance is excellent, the size accuracy and surface roughness of the matrix metal after plating are not changed, secondary processing is not required, the pollution is low, the efficiency is high, and precious alloy materials are saved; and the overall cost is close to that of a bi-metal cylinder liner, the performance is close to that of a ceramic cylinder liner, and the cost performance ratio is outstanding.

Description

technical field [0001] The invention relates to the technical field of mud pumps, in particular to a mud pump cylinder liner protected by nano-ceramic composite electrodeposition plating and a preparation method thereof. Background technique [0002] The mud pump is the core equipment for mud circulation during oilfield drilling and workover. The mud pump cylinder liner is an important wearable part of the hydraulic end of the mud pump. The working life of the mud pump cylinder liner directly affects the overall performance of the mud pump. The cylinder liner must not only have sufficient strength and rigidity, but also must be resistant to high temperature, corrosion and wear. At present, there are mainly the following types of mud pump cylinder liners: [0003] Single metal cylinder liner: the whole is made of single alloy steel, the inner surface of the cylinder liner is carburized and high-frequency heat treated, and the surface hardness can reach about HRC58. Its disa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B53/16C25D9/04C25D7/00B23P15/00
CPCB23P15/00C25D7/00C25D9/04F04B53/166
Inventor 杨杰瑞杨博李雷张栋梁刘洋郭昭阳邱杨宣亮
Owner 宝鸡市石油矿山机械配件厂