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Phosphating treatment method for fastener surface of pump body

A technology of surface phosphating and treatment method, applied in the direction of metal material coating process, etc., can solve the problems of poor bonding force, coarse and loose phosphating film crystals, etc., to achieve easy polarization and deformation, avoid coarse and loose crystals, large The effect of ionic radius

Inactive Publication Date: 2018-06-12
安徽江南泵阀集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the existing problems, and provide a method for phosphating the surface of pump body fasteners, which avoids the problems of coarse and loose phosphating film crystallization and poor bonding force caused by excessive temperature, and the obtained phosphating Film weight 2.5-2.8g / m 2 , uniform and dense

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A phosphating treatment method for the surface of pump body fasteners. The phosphating treatment solution used is made of the following components in parts by weight: 40 parts of zinc dihydrogen phosphate, 305 parts of zinc phosphate, 102 parts of zinc fluoroborate, 6 parts of zinc oxide 4 parts of sodium fluoride, 3 parts of tartaric acid, 2 parts of ammonia water, 1.2 parts of corrosion inhibitor, 0.3 parts of adsorbent, 0.6 parts of cerium nitrate, 0.4 parts of yttrium nitrate, 0.3 parts of lanthanum oxide, 0.1 parts of phosphating additive, 120 parts of water parts, phosphating film weight 2.5g / m 2 , its phosphating process includes the following steps:

[0016] (1) After polishing the fasteners of the pump body, immerse them in acetone solution at room temperature to remove oil for 3 minutes, then soak and wash them with pickling solution at 50°C for 20 minutes, and then rinse them twice with deionized water. Air-dried at ℃ for later use;

[0017] (2) Mix zinc di...

Embodiment 2

[0022] A method for phosphating the surface of pump body fasteners. The phosphating treatment solution used is made of the following components in parts by weight: 42 parts of zinc dihydrogen phosphate, 32 parts of zinc phosphate, 11 parts of zinc fluoroborate, 7 parts of zinc oxide 5 parts of sodium fluoride, 4 parts of tartaric acid, 3 parts of ammonia water, 1.3 parts of corrosion inhibitor, 0.4 parts of adsorbent, 0.7 parts of cerium nitrate, 0.5 parts of yttrium nitrate, 0.4 parts of lanthanum oxide, 0.15 parts of phosphating additive, 130 parts of water parts, phosphating film weight 2.6g / m 2 , its phosphating process includes the following steps:

[0023] (1) After polishing the fasteners of the pump body, immerse them in acetone solution at room temperature to remove oil for 4 minutes, then soak and wash them with pickling solution at 55°C for 25 minutes, and then rinse them twice with deionized water. Air-dried at ℃ for later use;

[0024] (2) Mix zinc dihydrogen ph...

Embodiment 3

[0029] A phosphating treatment method for the surface of pump body fasteners. The phosphating treatment solution used is made of the following components in parts by weight: 45 parts of zinc dihydrogen phosphate, 35 parts of zinc phosphate, 12 parts of zinc fluoroborate, and 8 parts of zinc oxide 6 parts of sodium fluoride, 5 parts of tartaric acid, 4 parts of ammonia water, 1.4 parts of corrosion inhibitor, 0.5 parts of adsorbent, 0.8 parts of cerium nitrate, 0.6 parts of yttrium nitrate, 0.5 parts of lanthanum oxide, 0.2 parts of phosphating additive, 150 parts of water parts, phosphating film weight 2.8g / m 2 , its phosphating process includes the following steps:

[0030] (1) After polishing the fasteners of the pump body, immerse them in acetone solution at room temperature to remove oil for 3-5 minutes, then use pickling solution to soak and wash at 60°C for 30 minutes, and then rinse with deionized water for 3 times. Air-dry at 90°C for later use;

[0031] (2) Mix zinc...

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Abstract

The invention relates to the technical field of performance research of a pump, and discloses a phosphating treatment method for fastener surface of a pump body. Due to the particularity of the outerelectronic structure of rare earth elements, each rare earth element is provided with a large ionic radius, is easy to polarize and deform, and is easily adsorbed on the surface of the substrate metal, so that more active points are provided, more crystalline nuclei are formed, and the phosphorylation process is accelerated. The formation speed of the phosphating film reaches 0.7 to 0.8g / (m2.min),and the phosphating crystals are refined and dense to increase the corrosion resistance of the film. The phosphating additive increases the percentage of reactive molecules in the phosphating solution and the thermal motion of the reacting molecules, and avoids the problem of excessive coarsening of the phosphating film and poor binding force due to excessive temperature, and the obtained phosphate film is 2.5-2.8g / m2, uniform and dense.

Description

technical field [0001] The invention belongs to the technical field of pump performance research, and in particular relates to a phosphating treatment method for the surface of a fastener of a pump body. Background technique [0002] A pump is a machine that transports fluid or pressurizes the fluid. It transmits the mechanical energy of the prime mover or other external energy to the liquid to increase the energy of the liquid. The pump is mainly used to transport liquids such as water, oil, acid and alkali liquid, emulsion, suspoemulsion and liquid metal, and can also transport liquid, gas mixture and liquid containing suspended solids. Pumps can usually be divided into three categories according to their working principles: positive displacement pumps, dynamic pumps and other types of pumps. In addition to classification by working principle, it can also be classified and named by other methods. For example, according to the driving method, it can be divided into electr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/42
CPCC23C22/42
Inventor 吴同茂吴敏吴瑞斌戴高岩
Owner 安徽江南泵阀集团有限公司
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