This part is a part of the national standard GB/T 19816 on the sampling and testing of metal abrasives for blast cleaning. The types of metal abrasives and the requirements for each type are contained in the various parts of ISO 11124. ISO 11124 and GB/T 19816 are a series of standards on metal abrasives for blast cleaning. For all information about these two series of standards, see Appendix A. This part of GB/T 19816 specifies the test method for determining the percentage of defective particles and microstructure of metal abrasives for blast cleaning. GB/T 19816.5-2005 Test methods for metal abrasives for blast cleaning for surface preparation of steel before coating Part 5: Determination of percentage of defective particles and microstructure GB/T19816.5-2005 Standard download decompression password: www.bzxz.net
This part is a part of the national standard GB/T 19816 on the sampling and testing of metal abrasives for blast cleaning. The types of metal abrasives and the requirements for each type are contained in the various parts of ISO 11124. ISO 11124 and GB/T 19816 are a series of standards on metal abrasives for blast cleaning. For all information about these two series of standards, see Appendix A. This part of GB/T 19816 specifies the test method for determining the percentage of defective particles and microstructure of metal abrasives for blast cleaning.

C.S26.223.13
National Standard of the People's Republic of China
GB/T 19816.5—2005/ISO 11125-5:1993Repurification of steel substrales before application of paintg anid related proluctsTesl methods for metallic hlast-cleaning abrasivesPart 5.Detcrnmination of percentage defective particles and of microstructure (15SO11125-5:1993, IDT)
2005-09-14 Issued
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Standardization Administration of China
2006-04-01 Implementation
GP/T19816.5—2005/1SO11125-5.1993GB/T199% Surface treatment of steel materials for cleaning and abrasive removal is divided into the following parts: Part 1: Sampling; Part 2: Determination of surface size distribution; Part 3: Determination of thickness; Part 4: Determination of surface density; Part b: Determination of percentage of defective particles and microstructure; Part 6: Determination of surface density; etc. Part 8: Determination of water content Part 8: Determination of mechanical properties of abrasives Part 5 of this Part GH1U9:5 This part is for reference only 131112-5:1993 Surface treatment of steel materials before radiation cleaning Test methods for metallic abrasives Part 5: Determination of whitening ratio and microstructure of materials English version) For the purpose of use, this part is changed to "this part": "this part"; "" is used as the symbol of the part; 7: The prefix of the international standard is deleted; Appendix A adds the national standard corresponding to the national standard of "metallic abrasives for radiation cleaning". The appendix of this part is for reference only. The appendix of this part is for reference only. Surface treatment of steel before painting and painting process - Technical instructions for the National Committee of the Chinese Academy of Sciences Surface treatment of steel before painting and painting process - Technical instructions for the National Committee of the Chinese Academy of Sciences Drafting of this part: China Industrial Comprehensive Technical and Economic Research Institute, Manbo Steel Co., Ltd. Main drafters of this part: Liang Fengzhi and Miao Hongren, 1 Fan Guo GR/T19816.5—2005/TSQ11125-5:1993 Surface treatment of steel before painting - Test methods for metallic abrasives for blast cleaning - Part 5: Determination of percentage of defective particles and microstructure This part is a part of the national standard G3/T198°5 for the determination and testing of blast cleaning materials. The types of abrasives and the requirements for each type are included in 1S111 21. 15911124 and GB/T1986 are related to the standardization of abrasives for blast cleaning. For all information about these two standards, please refer to the reference A.
This part of B/T6 specifies the test method for determining the defect ratio and microstructure of blast cleaning abrasives. 2 Normative references
The following clauses are referenced by this part of GB/T1986-5 or are clauses of this part. For any citation dated before the date of publication, all subsequent amendments (excluding errata or revisions) are not applicable to this part. Therefore, parties to agreements based on this part are encouraged to study whether the latest versions of these documents can be used. The latest versions of the undated referenced documents are applicable to the following sections:
E/T15816 .1-29J Test method for inspection and judgment of the surface cleaning of steel materials before coating: Part 3: Sampling (IS01!25-1:1993.1T)
G5/T1!R1(3-2055 Test method for inspection and judgment of the surface cleaning of steel materials before coating: Part 3: Determination of the degree of cleaning (S11:,I)
Except for conventional laboratory instruments and semi-conductor treatment, the following equipment shall be included: 3.1 Metallographic microscope, magnification 50X, 3.2 Double-sided thermal microscope, magnification increase of 5(1%. 2 Sampling
Take representative samples of the product to be tested in accordance with the provisions of GH/11981h.1-2055 or the provisions of GB/T19816.32305. 6.1.2 Determination of particles with cracks, notches, holes and shrinkage cavities: The definition of the effectiveness is as in 111122 and the test machine is used for the production of materials. 6.1.1 Use a double-micronized powder 53 times larger than the commercial product. 2) Check the sample of the medicine after the letter (see Chapter 5). Randomly select the current frequency and select 50-1 particles according to the capacity. Note: The two effectiveness items in the safety are missing. At the same time, take the advantage of the field for inspection. GR/T 19616.5—2005/IS0 11125-5;19936.1.2 Korean particles with the following defects: a) Notch; b) Hole; c) The sensitivity of the particle is more than ten levels, and the number of repeated counts is one. 6.1.? Calculate the percentage of each defect relative to the total defect percentage: 6.2 Determination of shape defects in pellets
6.2.1 Take 2 pieces of pellets and place them on a microscope slide or plate. Examine the pellets with a double-lens display of appropriate magnification. Place the pellets in the field of view. Note 1: For pellets with a larger size, take a sample of 1000 mm or more to ensure that the number of inspections is 5. 5.2.2 For pellets with a length greater than 200 mm, take a sample of 1000 mm or more to ensure that the number of inspections is 5. 6.2.3 Determination of shape defects in pellets
6.3 Determination of shape defects in pellets
6.3.1 Take 2 pieces of pellets and place them on a microscope slide. Place them in a single layer. Note 1: For pellets with a larger size, take a sample of 1000 mm or more to ensure that the number of inspections is 5. 5.2.2 For pellets with a length greater than 200 mm, take a sample of 1000 mm or more to ensure that the number of inspections is 5. 6.2.3 Determination of shape defects in pellets wwW.bzxz.Net
6.3.1 Take 2 pieces of pellets and place them on a microscope slide. Place them in a single layer. 3.2) Use a double-penetrating microscope to randomly select the field of view, check 5 particles, and the number of particles in a sharp field depends on the size of the sample. The sample should be taken as the starting point to ensure that there are 2 or more samples with the same size. 6.3.2 Pay special attention to the counting of medical or semi-trapped particles, and pay attention to the orientation of the particles to avoid misjudgment of the shape of the particles. 6.3.3 Calculate the percentage of trapped particles.
6.4 Determination of round particles with shape defects
6.4.1 Take about 200 particles and place them on a microscope slide, arrange them in layers, and use the microscope (3.2) to increase the number of particles to be inspected. Randomly select 5 particles. Note: The maximum number of particles on the scale is 10. Therefore, 5 particles should be selected for inspection. 6.4.2 When counting carbon-defect particles, care should be taken to avoid incorrectly dividing the particles into shape defects. 6.4.3 Count the percentage of defects.
6.5 Determination of microstructure
6.5.1 Use 2% nitroethyl ether or a 2% ionizing solvent to remove the representative sample (Chapter 5) and expose the microstructure for metallographic examination. Use the appropriate total estimate of the width of the gold microscope <3.1> to check the microstructure of the particles, and ensure that the machine is registered 5: 6.5.2 For particles with a certain structure, 6.5.3 Calculate the percentage of the average number of particles that do not meet the requirements. 7 Test report
Wu test base plan less content; according to the requirements of Appendix A of the standard 11124, all parts of the product must be tested; 6: This part of the standard number (G/1198-6.52005) e) Test results:
Shan) Test method difference with the specification: p) After the month:
Test purpose,
Appendix A
(Informative Appendix)
GI/T19816.5—2005/X) 11125-5:1393 International standards for abrasives for blast cleaning 1S0) 1124 and 18011125 are the standards for the requirements of abrasives for blast cleaning in the United States. 1S: 1124 Technical requirements for surface treatment of materials before blasting, composed of the following parts: Part 1: Principles and sub-sections: Part 2: Cold casting; Part 3: High-carbon steel shot and sand: Part 4: Low-carbon cast steel shot; Part 5: Steel wire segment: JS () 11: 25 Metal abrasives for surface treatment of steel before coating The test method consists of the following parts: Part 1: Sample; Part 2: Determination of size distribution of the sample; Part 3: Determination of the roughness; Part 4: Determination of the degree of irregularity; Part 5: Determination of the percentage of trapped particles and of microparticles; Part 6: Determination of extraneous impurities; Part 7: Determination of the content of the material; Part 8: Determination of the mechanical properties of the material; and The corresponding national standards of the international standard for "abrasive materials for blast cleaning" are: G8/T1K833.12002 Technical requirements for abrasive materials for blast cleaning of structural surfaces before coating Part 1: Classification (1S011124:19M0D)
GH/11015.1-3005 Testing and monitoring methods for abrasive materials for blast cleaning of steel surfaces before coating Part 1: Sampling (1S1112F .1:155A.JDT)
Test method for blast cleaning of metal materials
G/T15.22005 Determination of hardness distribution of surface treatment of materials before painting S-3199T
Part 2
GB/T1$616.3—200 mm steel surface treatment before painting - Determination of the test hardness of metal marks for blast cleaning (IS1112-2.1993.[DT)! Test methods for metal abrasives for blasting and cleaning GR/19516.4-2005 Determination of the surface roughness of materials before coating 5-4) Part 3, Part 4: Test methods for metal abrasives for blasting and cleaning 5-4) Part 3, Part 4: Test methods for metal abrasives for blasting and cleaning 5-5: GB/19816.5-2000 Determination of the percentage of imperfections and microstructure of materials before coating (15011 135-:1993.11)GB/11$816,G-200 Surface treatment of materials before coating 1 Test method for blasting and pressure-gold Saco
Information part:
Determination of foreign matter (15011135993D) GR/-1581G.7--2005 Surface treatment of steel materials before coating Determination of base (SU, ID)
Blasting and pressure-gold abrasive test method, etc.
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