JB/T 9216-1999 JB/T 9216-1999 Methods for controlling the quality of materials for penetrant testing JB/T9216-1999 Standard download decompression password: www.bzxz.net

JB/T9216-1999
This standard is equivalent to ISO3453:1984 "Non-destructive Testing Liquid Penetrant Inspection Verification Method". This standard is a revision of ZBJ04003--87 "Methods for Controlling the Quality of Penetrant Testing Materials". During the revision, the original standard was edited. The main technical content changes are: the content of A1.2 in Appendix A was modified to make it consistent with the revised JB/T92131999 "Technical Conditions for Type A Sensitivity Comparison Test Blocks for Penetrant Testing". This standard is recommended to replace ZBJ04003--87 from the date of implementation. Appendix A of this standard is the appendix of the standard. bZxz.net
This standard is proposed and managed by the National Technical Committee for Non-destructive Testing Standardization. The responsible drafting unit of this standard: Shanghai Materials Research Institute. The main drafter of this standard: Mi Zhongyu.
Mechanical Industry Standard of the People's Republic of China
Methods for controlling the quality of liquid penetrant meterials1 Scope
JB/T 9216-
eqv ISO 3453: 1984
Replaces ZB J04 003 --87
This standard specifies the general quality requirements and verification methods for the main materials in penetrant testing. It is used in conjunction with JB/T9218-1999 "Penetrating Flaw Detection Methods".
2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard was published, the versions shown were all valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest versions of the following standards: GB/T5097-1985 Indirect evaluation method of black light source JB/T9213-1999 Nondestructive testing - penetrant inspection type A comparison test block 3 Quality requirements for penetrants
3.1 The specific gravity of various penetrants should be calibrated according to the indicators specified in the manufacturer's instructions. If the specific gravity of the penetrant does not meet the requirements of the penetrant manufacturer's product instructions during use, the penetrant should be scrapped. 3.2 The concentration of various penetrants should be regularly calibrated according to the technical indicators specified in the manufacturer's instructions, and the concentration of the coloring dye should be maintained. The calibration method should comply with the provisions of 3.3.
3.3 Penetrant concentration calibration method
3.3.1 Standard comparison penetrant
Take 0.5 kg from each batch of new penetrants and emulsifiers, hide them in sealed glass containers, mark the material batch number, avoid sunlight, and prevent the influence of temperature on them, and use them as standard comparison penetrants. 3.3.2 Verification method
Pour 10ml of the penetrant to be verified into a measuring cylinder containing 90mL of colorless kerosene or other inert solvent, and stir evenly; perform the same steps as above with the standard contrast penetrant. Then place them in Nessler test tubes for comparison: If the color concentration difference between the penetrant to be verified and the standard contrast penetrant exceeds 20%, the penetrant to be verified is unqualified and the batch of penetrants should be scrapped. 3.4 The penetrant should be inspected for appearance; if obvious turbidity or sediment, discoloration, or difficulty in cleaning are found, it should be scrapped. 3.5 The concentration of fluorescent dyes should be verified frequently to keep its concentration not less than 75% of the concentration of standard fluorescent contrast penetrants. The method for verifying the concentration of fluorescent dyes should comply with the provisions of Appendix A of GB/T5097-1985. 4 Quality requirements for developers
4.1 In order to prevent the penetrant from contaminating it, the dry powder developer should be checked regularly and kept in a dry and loose state. If the particles are found to be condensed and the developing performance is reduced, it should be scrapped. 4.2 The concentration of the liquid developer should be kept within the working concentration range specified by the manufacturer, and its specific gravity should be checked regularly. If the specific gravity does not meet the requirements of the product manual during use, it should be scrapped. Approved by the State Bureau of Machinery Industry on June 28, 1999, and implemented on January 1, 2000
5 Quality requirements for black light
JB/T9216-1999
The output intensity of the black light source should be checked regularly, and the standard black light intensity on the surface of the inspected object should be maintained at no less than 501x. The evaluation method of the black light intensity should comply with the provisions of GB/T5097. Inspection of flaw detection materials and equipment
6.1 Inspection should be carried out according to the requirements of the above chapters before each actual flaw detection. When the operating conditions change, the reference blocks described in Appendix A (Standard Appendix) shall be used to verify the specified operating conditions. 6.2 The final test results shall be compared with the corresponding records (such as copies or photos) and a written report shall be made. 496
A1 Types of reference blocks
JB/T 9216--1999
(Standard Appendix)
Reference blocks
The types of reference blocks for verifying the effectiveness of the inspection are as follows. A1.1 Chrome-plated reference blocks
1Cr18Ni9Ti or other appropriate stainless steel materials are nickel-plated on one side with 30μm ± 1.5μm on a rectangular test block of 4mm×40mm×130mm, and 0.5um chromium is plated on the nickel-plated layer, and annealed after plating. From the unplated surface, use a steel ball with a diameter of 10mm to hit three points of hardness at 750kg, 1000kg and 1250kg using the Brinell hardness method to form three radial cracks on the coating. Use a standard contrast flaw detector to conduct a penetrant test and take a photo or copy the results. A1.2 Aluminum alloy contrast test block
See JB/T9213 for lead alloy contrast test blocks.
A1.3 Test parts
Tested parts can also be used as contrast test blocks, but they should have known defects permanently recorded. Their surface structure, geometry and material properties should be the same as those of the inspected parts. A2 Application of contrast test blocks
A2.1 The contrast test block is used to test the performance of the flaw detector and its ability to show defect traces under the same test conditions. A2.2 As long as the contrast test block has been subjected to the dye penetrant flaw detection test, it cannot be subjected to the fluorescent penetrant flaw detection test under normal circumstances, and vice versa. A3 Storage of Comparison Test Blocks
A3.1 Comparison test blocks must be thoroughly cleaned after use to remove any residual penetrant from defects that show traces. A3.2 After the test cleaning, no trace of fluorescent penetrant or colored penetrant should remain on the test block or test parts. A3.3 After cleaning, to prevent contamination of the comparison test block, it should be placed in a sealed container containing a mixture of 50% acetone and 50% of another appropriate solvent, or stored by other anti-fouling methods. 4.97
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