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Anti-corrosion and wear-resistant hydraulic cylinder plunger and manufacturing method thereof

A hydraulic cylinder, anti-corrosion and wear-resistant technology, applied in the field of hydraulic cylinders, can solve the problems of shortening the life of hydraulic cylinders, unilateral wear of seals, shortening the life of plungers, etc., to improve process performance, improve bonding force, and increase service life Effect

Active Publication Date: 2016-05-18
江苏红宇新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The weight of the plunger is often large, and it is easy to sag from the self-weight surface when it is placed horizontally, causing unilateral wear of the seal and guide
[0006] At the same time, because the plunger part of the hydraulic cylinder needs to be continuously extended during the working state, it is easily corroded by oxides and acid gases after the cylinder is extended. This will quickly shorten the life of the plunger in the long run, and then shorten the Hydraulic cylinder life

Method used

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  • Anti-corrosion and wear-resistant hydraulic cylinder plunger and manufacturing method thereof
  • Anti-corrosion and wear-resistant hydraulic cylinder plunger and manufacturing method thereof

Examples

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Comparison scheme
Effect test

specific Embodiment 1

[0082] In terms of mass percentage, 10% of chromium, 7% of silicon, 30% of iron, 13% of carbon, 1% of molybdenum, and 40% of nickel are made into a mixed powder with a particle size of 200 meshes, and the mixed powder is covered on a surface made of No. 45 steel. On the plunger base 101 of the hydraulic cylinder, use CO 2 The laser is used for cladding, the wavelength of the laser is 1020nm, and the energy density is 62J / mm 2 ; The irradiation time was 4 minutes. After the irradiation is completed, the formed cermet layer 102 is fused with the hydraulic cylinder plunger base 101, and its thickness is about 1mm, and it can be formed after subsequent heat treatment.

specific Embodiment 2

[0083] In terms of mass percentage, 15% of chromium, 8% of silicon, 32% of iron, 10% of carbon, 2% of molybdenum, and 35% of nickel are made into a mixed powder with a particle size of 250 meshes, and the mixed powder is covered on a surface made of No. 45 steel. On the plunger base 101 of the hydraulic cylinder, use CO 2 The laser is used for cladding, the wavelength of the laser is 1030nm, and the energy density is 65J / mm 2 ; The irradiation time is 5 minutes. After the irradiation is completed, the formed cermet layer 102 is fused with the hydraulic cylinder plunger base 101, and its thickness is about 1.5 mm, and can be formed after subsequent heat treatment.

specific Embodiment 3

[0084] In terms of mass percentage, 20% of chromium, 7% of silicon, 32% of iron, 9% of carbon, 1.2% of molybdenum, and 32% of nickel are made into a mixed powder with a particle size of 300 meshes, and the mixed powder is covered by No. 45 steel On the plunger base 101 of the hydraulic cylinder, use CO 2 Laser cladding, where the wavelength of the laser is 1040nm, and the energy density is 70J / mm 2 ; The irradiation time is 6 minutes. After the irradiation is completed, the formed cermet layer 102 is fused with the hydraulic cylinder plunger base 101, and its thickness is about 1.3mm, and can be formed after subsequent heat treatment.

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Abstract

The invention belongs to the field of hydraulic cylinders and particularly relates to an anti-corrosion wear-proof hydraulic cylinder plunger and a manufacturing method of the anti-corrosion wear-proof hydraulic cylinder plunger. The anti-corrosion wear-proof hydraulic cylinder plunger comprises a hydraulic cylinder plunger base body. The surface of the plunger base body is covered with a metal ceramic layer. The metal ceramic layer comprises, by mass, 10%-30% of chromium, 5%-12% of silicon, 30%-40% of iron, 5%-13% of carbon, 30%-40% of nickel and 1%-2% of molybdenum. Compared with an existing hydraulic cylinder plunger, the anti-corrosion wear-proof hydraulic cylinder plunger manufactured according to the manufacturing method is good in wear resistance and stable in comprehensive performance; under the condition of continuous use, the service life of the anti-corrosion wear-proof hydraulic cylinder plunger is longer than five years, the work efficiency of a hydraulic cylinder is improved, and the use cost is reduced.

Description

technical field [0001] The invention belongs to the field of hydraulic oil cylinders, and in particular relates to an anti-corrosion and wear-resistant hydraulic oil cylinder plunger and a manufacturing method thereof. Background technique [0002] Plunger hydraulic cylinder: It is a single-acting hydraulic cylinder. It can only move in one direction by hydraulic pressure. The return stroke of the plunger depends on other external forces or the plunger's own weight. Only in the upward hydraulic cylinder It can return by the weight of the moving parts itself; [0003] The plunger is only supported by the cylinder liner without contact with the cylinder liner, so the cylinder liner is very easy to process, so it is suitable for long-stroke hydraulic cylinders, such as guide rail grinders, large broaching machines, and gantry planers; [0004] The plunger is always under pressure when working, so it must have sufficient rigidity; [0005] The weight of the plunger is often la...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10
Inventor 鲁伟员李信王强刘伟杨义乐
Owner 江苏红宇新材料科技有限公司
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