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A double protection agent for corrosion of chrome-plated hydraulic parts in water-glycol hydraulic system

A hydraulic system and double protection technology, applied in metal material coating process, coating and other directions, can solve problems such as hindering the production capacity and economic benefits of enterprises, corrosion and scrapping of hydraulic parts, etc., to eliminate defects in corrosion mechanism, shorten construction period, and eliminate brittleness strong effect

Active Publication Date: 2021-03-02
本溪陆甲科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of production practice, in some harsh environments, such as continuous casting production lines in steelmaking plants, these hydraulic parts will be corroded and scrapped within 4 months.
Frequent shutdowns for repair and maintenance seriously hinder the improvement of enterprise production capacity and economic benefits

Method used

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  • A double protection agent for corrosion of chrome-plated hydraulic parts in water-glycol hydraulic system
  • A double protection agent for corrosion of chrome-plated hydraulic parts in water-glycol hydraulic system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: In a kind of water-glycol hydraulic system, the chrome-plated hydraulic parts corrosion double protective agent comprises corrosion inhibitor and hydraulic parts cladding agent, and described corrosion inhibitor is made of chromate, molybdate, borate , benzotriazole, mercaptobenzothiazole, polyvinylpyrrolidone and cetylamine, the mass ratio of which is 1:0.1:0.2:1:0.5:0.3:0.1;

[0022] The hydraulic part cladding agent is composed of Fe, O, Gr, Ni, Ca and Al. Its percentage by weight is 2%, 20%, 8%, 0.10%, 0.03, Ni balance;

[0023] Wherein the corrosion grade of the water-glycol hydraulic fluid is tertiary corrosion, and the addition amount of the corrosion inhibitor is 0.5%;

[0024] The cladding agent for hydraulic parts is clad on the surface of chrome-plated hydraulic parts by plasma cladding process, and is sequentially formed by precision grinding process, and the thickness of the welding layer of cladding agent for hydraulic parts is 0.5mm.

[00...

Embodiment 2

[0026] Embodiment 2: In a kind of water-glycol hydraulic system, the chrome-plated hydraulic parts corrosion double protective agent comprises corrosion inhibitor and hydraulic parts cladding agent, and described corrosion inhibitor is made of chromate, molybdate, borate , benzotriazole, mercaptobenzothiazole, polyvinylpyrrolidone and cetylamine, the mass ratio of which is 1:0.5:0.3:1.2:0.7:0.4:0.2;

[0027] The hydraulic component cladding agent is composed of Fe, O, Gr, Ni, Mo, Nb, Si, Ca, V, Na and Al. Its percentage by weight is 2.2%, 21%, 8.9%, 0.12%, 0.01%, 0.03%, 0.01%, 0.03%, 0.01%, 0.01%, Ni balance;

[0028] Wherein the corrosion grade of the water-glycol hydraulic fluid is secondary corrosion, and the addition amount of the corrosion inhibitor is 1%;

[0029] The cladding agent for hydraulic parts is clad on the surface of chrome-plated hydraulic parts by plasma cladding process, and is sequentially formed by precision grinding process, and the thickness of the wel...

Embodiment 3

[0031] Embodiment 3: In a kind of water-glycol hydraulic system, chrome-plated hydraulic parts corrosion double protective agent, comprise corrosion inhibitor and hydraulic parts cladding agent, described corrosion inhibitor is made of chromate, molybdate, borate , benzotriazole, mercaptobenzothiazole, polyvinylpyrrolidone and cetylamine, the mass ratio of which is 1:0.9:0.6:1.3:09:0.6:0.3;

[0032] The hydraulic component cladding agent is composed of Fe, O, Gr, Ni, Mo, Nb, Si, Ca, V, Na and Al. Its percentage by weight is 2.3%, 23%, 9.4%, 0.13%, 0.01%, 0.8%, 0.01%, 0.04%, 0.02%, 0.02%, Ni balance;

[0033] Wherein the corrosion grade of the water-glycol hydraulic fluid is first-order corrosion, and the addition amount of the corrosion inhibitor is 1.3%;

[0034] The cladding agent for hydraulic parts is clad on the surface of chrome-plated hydraulic parts by plasma cladding process, and is sequentially formed by precision grinding process, and the thickness of the welding l...

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Abstract

The invention belongs to the technical field of high-temperature flame-retardant hydraulic systems of steel metallurgy production lines, and relates to a double-protection agent for corrosion of a chromium-plated hydraulic part in a water-ethylene glycol hydraulic system. The double-protection agent comprises a corrosion inhibitor and a hydraulic part cladding agent, wherein the corrosion inhibitor consists of chromate, molybdate, borate, benzotriazole, mercaptobenzothiazole, polyvinylpyrrolidone and hexadecylamine; the hydraulic part cladding agent consists of Fe, O, Gr, Ni, Mo, Nb, Si, Ca, V, Na and Al, double protection on the water-ethylene glycol hydraulic liquid and the chromium-plated hydraulic part is achieved, corrosion to equipment by rancidity of the water-ethylene glycol hydraulic liquid is slowed down through multiple anticorrosion combined with passivation, rust prevention, physical adsorption and anti-oxidation isolation, the corrosion resistance of the chromium-plated hydraulic part is improved and strengthened by the hydraulic part cladding agent, the corrosion resistance of the equipment is improved, the service life is prolonged, and the production cost is saved.

Description

technical field [0001] The invention relates to the technical field of high-temperature fire-resistant hydraulic systems in iron and steel metallurgical production lines, and is mainly used in the anti-corrosion field of chrome-plated hydraulic parts. The specific field is a double anti-corrosion agent for chrome-plated hydraulic parts in water-glycol hydraulic systems. Background technique [0002] In a high-temperature and flammable environment, in order to prevent fires caused by leakage of mineral hydraulic oil, it is necessary to use flammable hydraulic media. At present, non-combustible water-glycol hydraulic fluid is an ideal flame retardant hydraulic medium, and has been widely used in hydraulic systems that require fire prevention, such as casting and forging in the metallurgical industry. [0003] Although qualified water-glycol hydraulic fluid is alkaline and contains gas-phase and liquid-phase preservatives, water-glycol will be gradually oxidized during long-ter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/40C23F11/08C23C24/10
CPCC23C24/103C23F11/08
Inventor 张长伟
Owner 本溪陆甲科技有限公司