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Liquid formula for preventing metal housing of pressure sensor from being oxidized and treatment process

A pressure sensor, metal shell technology, applied in the direction of painting room, electrolysis process, electrolysis components, etc., can solve the problems affecting the corrosion resistance and sealing of the shell, and the nickel plating layer cannot form a good adhesion, etc., to increase the effect of rough treatment, The effect of improving the adhesion of the coating

Pending Publication Date: 2021-12-03
凯瑞电子诸城有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a liquid formula and treatment process to prevent oxidation of the metal shell of the pressure sensor, so as to solve the problem that the nickel-plated layer of the traditional stainless steel shell proposed in the above-mentioned background technology cannot form a good adhesion. Issues Affecting Corrosion Resistance and Sealing of Housings

Method used

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  • Liquid formula for preventing metal housing of pressure sensor from being oxidized and treatment process
  • Liquid formula for preventing metal housing of pressure sensor from being oxidized and treatment process
  • Liquid formula for preventing metal housing of pressure sensor from being oxidized and treatment process

Examples

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Embodiment 1

[0035] see Figure 1-5, a liquid formula and treatment process for preventing the oxidation of the metal shell of the pressure sensor. The oxide treatment equipment 2 is arranged on one side of the upper surface of the shell treatment equipment 1, and the two sides of the inside of the shell treatment equipment 1 are respectively provided with an oxidation liquid preparation box 9, The shell reduction box 13, the inner side of the oxidizing liquid preparation box 9 is provided with a delivery pump 10, and the lower end of the delivery pump 10 is connected with a suction pipe 11, and the suction pipe 11 is arranged at the inner bottom of the oxidizing liquid preparation box 9, and the delivery pump The outer side of machine one 10 is connected with delivery pipe one 12, and the other end of delivery pipe one 12 is arranged on the upper surface of oxidizing liquid shower 16, one side of oxidizing liquid shower 16 is fixedly connected to the side of moving ring 15, and moving ring...

Embodiment 2

[0038] see Figure 1-5 , the present invention provides the following technical solutions: a liquid formula for preventing oxidation after surface treatment of steel shells, made of the following raw materials in grams by weight: 30g of 5% citric acid and 30g of 5% boric acid.

[0039] A liquid formula and treatment process for preventing oxidation of a metal shell of a pressure sensor, comprising the following steps:

[0040] Step 1: Prepare an oxidized liquid in the oxidized liquid preparation box 9, take a certain amount of citric acid and 5% boric acid at a concentration, and stir the citric acid and boric acid by mixing and stirring to obtain the oxidized liquid;

[0041] Step 2: After the oxidation liquid is prepared, the oxide treatment equipment 2 is roughened by wet sandblasting to break the oxide film on the surface, increase the surface area at the same time, and improve the bonding force of the coating, and then at a certain higher temperature , using complexing a...

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Abstract

The invention discloses a liquid formula for preventing a metal housing of a pressure sensor from being oxidized and a treatment process. The liquid formula is prepared from the following raw materials by weight: 30 g of citric acid with the concentration of 5% and 30 g of boric acid with the concentration of 5%. Through the arrangement of a wet blasting sand storage tank, before nickel plating of a stainless steel shell, a second transfer pump in the wet blasting sand storage tank operates, wet blasting sand in the wet blasting sand storage tank is sprayed to the surface of the stainless steel shell through a spraying transverse pipe, so that the metal surface is clean, metal surface defects are removed, and the coating binding force is improved; and after oxidation liquid is prepared in an oxidation liquid preparation box, a first transfer pump in the oxidation liquid preparation box operates, the oxidation liquid in the oxidation liquid preparation box is sprayed on the surface of the stainless steel shell from an oxidation liquid shower head, and the follow-up oxidation phenomenon can be prevented through the combination of the two modes, so that a nickel-plated layer is well attached to the surface of the stainless steel shell.

Description

technical field [0001] The invention belongs to the technical field of surface treatment of metal shells of pressure sensors, and in particular relates to a liquid formula and a treatment process for preventing oxidation of metal shells of pressure sensors. Background technique [0002] -253℃~+650℃ pressure sensor metal casing is widely used in aerospace, ships, ships, etc., mainly used in booster cylinders, boosters, gas-liquid booster cylinders, gas-liquid boosters, presses and some special In the field of detection and other fields, the pressure sensor is characterized by its ability to withstand extremely low low temperature and high temperature, and can withstand gas pressure above 20MPa, and the metal shell needs to ensure good corrosion resistance, and the surface needs to be treated with corrosion resistance. [0003] The pressure sensor uses a stainless steel shell, and a dense oxide film is easily formed on the surface of the stainless steel shell. Under the influe...

Claims

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Application Information

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IPC IPC(8): C25D5/36C25D3/12C25D7/00C25D17/00C25D19/00C25D5/08C23F11/02C23G1/08B05B15/25B05B13/02B05B16/20
CPCC25D5/36C25D3/12C25D7/00C25D17/00C25D5/08C23F11/02C23G1/088B05B15/25B05B13/0228B05B16/20
Inventor 郑学军窦勇李文军陈祥波肖文鹏纪晓黎
Owner 凯瑞电子诸城有限公司
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