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Nuclear power product pump shaft phosphorization technology

A product pump, nuclear power technology, applied in the direction of metal material coating process, etc., can solve the problems that cannot meet the requirements of nuclear power products, the phosphating inner hole cannot be hung and plated, and there are contacts on the surface of the parts, etc., to achieve good bonding force and uniform color , Eliminate the effect of white spots

Active Publication Date: 2014-09-24
鹰普航空科技(南通)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional large phosphating inner holes cannot be hang-plated, and there are contacts on the surface of the parts, which cannot meet the requirements of nuclear power products

Method used

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  • Nuclear power product pump shaft phosphorization technology
  • Nuclear power product pump shaft phosphorization technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The phosphating process of nuclear power product pump shaft includes the following steps:

[0027] a. Surface treatment process before phosphating:

[0028] Put the pump shaft 6 in a 100% mass concentration acetone solution for degreasing for 8 minutes, then wash it with tap water, put it in 20% hydrochloric acid for 40 minutes, then wash it with tap water, and then use it Sodium hydroxide with a mass concentration of 5% is alkaline washed for 1 minute and then rubbed with a scouring pad until it is clean. Put the pump shaft 6 into the phosphating device and then phosphating;

[0029] b. Phosphating treatment:

[0030] The phosphating device and the pump shaft 6 are subjected to meter adjustment treatment, and the pump shaft 6 is placed in the meter adjustment solution with a mass concentration of 0.3% heated to 48℃ for 1 minute. The main components of the meter adjustment solution are PL-VMA and The titanium compound of PLVMS enters the phosphating tank 14 for phosphating. Th...

Embodiment 2

[0034] The phosphating process of nuclear power product pump shaft includes the following steps:

[0035] a. Surface treatment process before phosphating:

[0036] Put the pump shaft 6 in 100% acetone solution for degreasing for 10 minutes, then wash it with tap water, put it in 20% hydrochloric acid for 45 minutes, then wash it with tap water, and then use it. Sodium hydroxide with a mass concentration of 5% is alkaline washed for 2 minutes and then rubbed with sandpaper until it is cleaned. Put the pump shaft 6 into the phosphating device before phosphating;

[0037] b. Phosphating treatment:

[0038] The phosphating device and the pump shaft 6 are subjected to meter adjustment treatment, and the pump shaft 6 is placed in the meter adjustment solution with a mass concentration of 0.3% heated to 50°C for 2 minutes. The main components of the meter adjustment solution are PL-VMA and The titanium compound of PLVMS enters the phosphating tank 14 for phosphating. The total acidity of th...

Embodiment 3

[0042] The phosphating process of nuclear power product pump shaft includes the following steps:

[0043] a. Surface treatment process before phosphating:

[0044] Put the pump shaft 6 in 100% acetone solution for degreasing for 12 minutes, then wash it with tap water, put it in 20% hydrochloric acid for 50 minutes, then wash it with tap water, and then use it. Sodium hydroxide with a mass concentration of 5% is alkaline washed for 3 minutes and then rubbed with a scouring pad until it is clean. Put the pump shaft 6 into the phosphating device and then phosphating;

[0045] b. Phosphating treatment:

[0046] The phosphating device and the pump shaft 6 are subjected to meter adjustment treatment, and the pump shaft 6 is placed in the meter adjustment liquid with a mass concentration of 0.3% heated to 52°C for 3 minutes. The main components of the meter adjustment liquid are PL-VMA and The titanium compound of PLVMS enters the phosphating tank 14 for phosphating. The total acidity of t...

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PUM

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Abstract

The invention discloses a nuclear power product pump shaft phosphorization technology which comprises the following steps of: surface treatment process before phosphorization, phosphorization treatment including primary phosphorization and secondary phosphorization, and treatment after phosphorization. The invention also discloses a phosphorization device for the nuclear power product pump shaft phosphorization technology. The device comprises a workpiece bracket, wherein bracket legs are arranged at the two ends of the bottom of the workpiece bracket; lifting rings are arranged at the two ends of the upper part of the workpiece bracket; support seats are fixed at the two ends of the workpiece bracket above the bracket legs; each support seat is lined with a gasket; and a pump shaft is arranged on each support seat. The technology and device disclosed by the invention have the advantages of phosphorization for two times, no contact point, uniform inner bore phosphating film, uniform color, good adhesion of phosphating film, good hue and gloss; and by additionally providing a filter, hickie can be eliminated.

Description

Technical field [0001] The invention relates to a phosphating process for pump shafts of nuclear power products. [0002] The invention also relates to a phosphating device for the phosphating process of a pump shaft of a nuclear power product. Background technique [0003] In the phosphating process, although there are sedimentation equipment, due to high temperature phosphating, there is more or less phosphating slag in the solution, causing white spots on the parts in the solution. This is the crux of the usual high-temperature phosphating. The pump shaft has large volume (φ105mm×1250mm), heavy weight (about 100kg), complex shape (two-threaded, middle optical shaft, and inner hole at the top). The process requirements are: internal and external integral phosphorization, no contact, uniform color Color difference, fine crystals. Conventional large phosphated inner holes cannot be rack-plated, and the parts have contacts on the surface, which cannot meet the requirements of nucl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/73C23C22/07
Inventor 仇士学东永华蔡宪成
Owner 鹰普航空科技(南通)有限公司