GB/T 25147-2010Test method of metal corrosion amount and corrosion rate of chemical cleaning for industrial equipment - Gravimetric method (English PDF)
工业设备化学清洗中金属腐蚀率及腐蚀总量的测试方法 重量法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
September 26, 2010
Implementation date
March 1, 2011
Scope
GB/T 25147-2010 is the English-translated version of 工业设备化学清洗中金属腐蚀率及腐蚀总量的测试方法 重量法.
GB/T 25147-2010 is the Chinese standard "Test method of metal corrosion amount and corrosion rate of chemical cleaning for industrial equipment - Gravimetric method".
Its scope clause reads: This standard specifies the test method for corrosion of metal corrosion rate and the total amount of industrial equipment, chemical cleaning processes.
This standard applies to industrial equipment, chemical cleaning and cleaning before laboratory measurement field of metal corrosion rate and corrosion of the total. Its clauses include method summary; preparations.
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Document preview — GB/T 25147-2010
National Standard of the People's Republic of China
- ICS
- 71.120.01
- Classification
- G 90
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Method Summary
- 4 Preparations
1 Scope
This standard specifies the test method for corrosion of metal corrosion rate and the total amount of industrial equipment, chemical cleaning processes.
This standard applies to industrial equipment, chemical cleaning and cleaning before laboratory measurement field of metal corrosion rate and corrosion of the total.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
Laboratory use specifications and test methods GB/T 6682 Analysis
HG/T 3523 standard chemical treatment of cooling water corrosion test piece technical conditions
3 Method Summary
We will be ready and after accurately weighed metal specimens immersion in the test solution, under conditions of a temperature and corrosion test specified time
A posteriori, to be tested, remove the test piece was treated and then weighed by the mass loss of the test piece to calculate the test solution to the test strip and metal corrosion rate
The total amount of corrosion, in order to evaluate the total amount of corrosion and industrial equipment in the chemical cleaning process of the corrosion rate.
4 Preparations
4.1 Prepare the test piece
4.1.1
The test specimen material in accordance with the cleaning solution identified in the metal material selection, ensure that the test specimen and the actual cleaning of the metal material
Consistent.
4.1.2
The test piece size, shape and dimensions, the machining program, in line with the requirements of the test strip appearance HG/T 3523 requirements.
4.1.3
tweezers to take the test on a clean sheet of paper.
4.1.4
first with cotton dipped in distilled water and scrub specimens, rinsed with distilled water 15s.
4.1.5
immediately placed in chemically pure anhydrous ethanol, with cotton scrub twice.
4.1.6
The complete scrub of the specimen is placed on a clean filter paper with a hair dryer to dry.
4.1.7
The test pieces dry with paper wrapped, placed in a desiccator, weighed stand 2h after weighing accuracy of 0.0001g.
4.1.8
After the test piece handle can not be touched by hand.
4.2 Prepare the test solution
4.2.1
The laboratory preparation of test solution, use distilled water and analytical reagents, distilled water should meet the GB/T 6682 in three water
Claim.
The main components and proportions 4.2.2 laboratory test solution should be identified with the cleaning solution cleaning solution considerably.
4.2.3
The concentration of the solution is represented by the mass fraction.
4.2.4
Laboratory and the determination of the total amount of corrosion of metal corrosion rate, volume of test solution of the general requirements for each 1cm2 surface area of the test piece surface
Smaller than 20mL, shall not exceed 40mL.
GB/T 29465-2023 | GB/T 7996-2020 | HG/T 20537.3-1992 | GB/T 25148-2010 | GB/T 25146-2010 | GB/T 25145-2010 | […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
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