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Method for testing corrosivity of solid chemical product on metal

A test method and chemical technology, applied in the fields of weather resistance/light resistance/corrosion resistance, measuring devices, scientific instruments, etc., can solve the problems of inaccurate test results, etc., and achieve the effect of convenient testing, good technical effect, and high degree of automation

Inactive Publication Date: 2017-11-03
CHINA PETROLEUM & CHEM CORP +1
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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 the problem of inaccurate test results in the prior art, and a new test method for the corrosion of solid chemicals to metals is provided

Method used

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  • Method for testing corrosivity of solid chemical product on metal
  • Method for testing corrosivity of solid chemical product on metal
  • Method for testing corrosivity of solid chemical product on metal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A test method for the corrosivity of solid chemicals to metals, such as figure 1 As shown, the test device for the corrosivity of solid chemicals to metals is used to test the corrosivity of solid chemicals to metals. The test device for the corrosivity of solid chemicals to metals includes air inlets, other gas intake systems, filters, Regulating valve, flow valve, flow meter, gas mixing chamber with heated outer layer, humidity control system, temperature control system, humidity probe, pressure control system, thermocouple, bracket, plastic mesh cage, support plate, box; The samples to be tested are filled in a plastic square cage and placed in a corrosion test chamber. One of the polished metal test pieces is buried in the sample to be tested, and the other is half buried in the sample to be tested. Set the test temperature, humidity and pressure and Test time: open the intake system, air or the mixture of air and other gases enters the gas mixing chamber with a hea...

Embodiment 2

[0060] Adopt solid chemical of the present invention for the test method and device test of metal corrosion solid polyaluminum chloride at normal temperature, normal pressure, air atmosphere, humidity is under 40%RH, within 168 hours for aluminum sheet (non-composite type 7075-T6) corrosivity. The specific implementation process is as follows:

[0061] (1) After polishing the 2 pieces of aluminum sheet, weigh and record. Take the solid polyaluminium chloride sample and put it into a plastic square cage, bury one piece of polished aluminum sheet in the sample of the plastic square cage, and one piece of aluminum sheet half-buried in the sample of the plastic square cage, and wrap it with a polytetrafluoroethylene wire. The aluminum sheet is fixed on the bracket of the plastic square cage to prevent sinking during the test.

[0062] (2) Place the square cage containing the samples and metal test pieces in the corrosion test chamber, and insert the thermocouple and humidity pro...

Embodiment 3

[0071] Adopt solid chemical of the present invention for the test method and device test of metal corrosion phthalic anhydride at 50 ℃, 2 atmospheres, nitrogen atmosphere, humidity is under 60%RH, within 168 hours for steel sheet (SAE1020 ) corrosiveness. The specific implementation process is as follows:

[0072] (1) Weigh and record the 2 pieces of steel sheet after grinding. Take a sample of phthalic anhydride and put it into a plastic square cage, bury one piece of polished steel sheet in the sample of the plastic square cage, and one half-buried in the sample of the plastic square cage, and wrap it with a polytetrafluoroethylene wire. The steel sheet is fixed on the bracket of the plastic square cage to prevent sinking during the test.

[0073] (2) Place the square cage containing the samples and metal test pieces in the corrosion test chamber, and insert the thermocouple and humidity probe into the square cage.

[0074] (3) Turn on the power of the corrosion test cham...

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Abstract

The present invention relates to a method for testing the corrosivity of a solid chemical product on a metal. A purpose of the present invention is mainly to solve the problem of inaccurate test result in the prior art. The technical scheme of the present invention is a method for testing the corrosivity of a solid chemical product on a metal, wherein the corrosivity of a solid chemical product on a metal is tested with a test apparatus for the corrosivity of a solid chemical product on a metal, and the apparatus comprises an air inlet, an other-gas inlet system, a filter, a regulation valve, a flow valve, a flow meter, a gas mixing chamber with a heating outer layer, a humidity regulation system, a temperature control system, a humidity probe, a pressure control system, a thermocouple, a bracket, a plastic net cage, a support plate and a box. With the technical scheme of the present invention, the problem in the prior art is well solved. The test method of the present invention can be used for the test of the corrosivity of the solid chemical product on the metal.

Description

technical field [0001] The invention relates to a method for testing the corrosivity of solid chemicals to metals. Background technique [0002] As one of the physical hazards of chemicals, the corrosion hazard of chemicals to metals is an important parameter for assessing the hazards of chemicals. At present, the metal corrosion testing methods and devices commonly used at home and abroad refer to the United Nations Recommendations on the Transport of Dangerous Goods - Test and Criteria Manual (hereinafter referred to as the "Test and Criteria Manual"), but this method and device are only applicable to Liquid chemicals and solid chemicals that may become liquid during transportation are not applicable to general solid substances, and the test methods for solid chemicals that can become liquid are not specific enough. [0003] In my country, the test method for the corrosion of solid waste to metal is to use the glass electrode to test the pH of the leach solution of solid ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/00
CPCG01N17/006
Inventor 张金梅王双全张玉霞王亚琴王康郭璐张会光
Owner CHINA PETROLEUM & CHEM CORP
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