This part is a part of the national standard GB/T19816 on sampling and testing of metal abrasives for blast cleaning. The types of metal abrasives and the requirements for each type are included in the various parts of ISO 11124. The ISO11124 and GB/T19816 series are a set of closely related standards for metal abrasives for blast cleaning. Information about all parts of these two series of standards can be found in Appendix A. This part of GB/T19816 specifies the method for determining the apparent density of metal abrasives for blast cleaning. The purpose of the test is to confirm the integrity of the metal abrasive. Internal shrinkage or hollow particles will reduce the apparent density. GB/T 19816.4-2005 Surface preparation of steel before coating - Test methods for metallic abrasives for blast cleaning - Part 4: Determination of apparent density GB/T19816.4-2005 Standard download decompression password: www.bzxz.net
This part is a part of the national standard GB/T19816 on sampling and testing of metallic abrasives for blast cleaning. The types of metallic abrasives and the requirements for each type are contained in the various parts of ISO 11124. The ISO11124 and GB/T19816 series are a set of closely related standards for metallic abrasives for blast cleaning. Information on all parts of these two series of standards can be found in Appendix A. This part of GB/T19816 specifies the method for determining the apparent density of metallic abrasives for blast cleaning. The purpose of the test is to confirm the integrity of the metallic abrasive. Internal shrinkage or hollow particles will reduce the apparent density.

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National Standard of the People's Republic of China
GB/T 19816.4--2005/IS0 11125-4:1993 Surface preparation of steel substrates before application of paints
Test methods for metallic bin-cleaning ahrasives-Part 4:Determination of apparent density
Preparation of steel substrates for surface application of paints aad related prixaels-Test methods for metallic bin-cleaning ahrasives-Part 4:Determination of apparent density(IS0 1125. 4:1993,IPT)
2005-06-10 Issued by
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
2005-11-01 Implementation
GB/T19816.4—2005/LS11125-4, 1993 B/1816 Test method for metal content of materials for use in surface treatment of abrasive materials is divided into the following parts: Part 1: Sampling; Part 2: Determination of particle size distribution; Part 3: Determination of density; Part 4: Determination of surface roughness; Part 5: Determination of defects, particle size and microstructure; Part 6: Determination of foreign matter; Part 7: Determination of metal content; Part 8: Determination of abrasive properties.
This part is equivalent to Part 1 of GT19816.
This part is equivalent to 1S) 11125.4:193 Surface treatment of new materials before coating - Test method for abrasive blasting - Part 4: Determination of apparent density (for technical purposes only), this part has the following minor additions: "wood and international standard" is changed to "part", "a" is used as the decimal point, "a" is used as the decimal point, "b" is used as the decimal point, "c" is used as the decimal point, "d" is used as the decimal point, "e" is used as the decimal point, "f" is used as the decimal point, "g" is used as the decimal point, "h ... This part was proposed by China Super Platinum Industry Group Co., Ltd. This part was organized by the National Technical Committee for Standardization of Materials and Paints, and the Surface Treatment and Vibration Processing Technology Subcommittee of the National Technical Committee for Standardization of Materials and Paints. The drafting units of this part are: China Shipbuilding Industry First Research Institute, China Shipbuilding Industry Comprehensive Technology Research Institute. The main contributors to this part are: Ting Shuhua, Pan Yang, Song Tuoshi, 1 Scope
(B/T19816.4—2005/1SX) 11125-4, 1993 Surface treatment of steel before painting
Test methods for metal abrasives for blast cleaning Part 4: Determination of apparent density
This part is a national standard GB/T19816.4—2005/1SX) 11125-4, 1993 Surface treatment of steel before painting
Test methods for metal abrasives for blast cleaning Part 4: Determination of apparent density
This part is about the sampling and testing of metal abrasives for blast cleaning This part of GB/T 11686 specifies the method for determining the metal abrasive properties of blast cleaning materials. Particles with internal shrinkage or hollowness will reduce the apparent density. 2 Normative reference documents || tt || The clauses in the following documents become clauses of this part through reference to this part of GB/T 11686. All referenced documents with dates are as follows: All subsequent amendments (excluding revisions to this standard) are not applicable to this standard. However, parties to an agreement based on this standard are encouraged to explore whether the latest edition of these documents can be used. For undated references, the latest edition applies. This standard applies to all undated references. 3.1.1 Surface treatment of steel materials before spraying - Test methods for metallic materials for use in spraying - Part 1: Speci?cations: 125-1: 1993.1.1 3.1.2 Surface treatment of steel materials before spraying - Test methods for metallic materials for use in spraying - Part 1: Speci?cations: 125-1: 1993.1.1 3.1.3 Surface treatment of steel materials before spraying - Test methods for metallic materials for use in spraying - Part 2: Speci?cations: 125-1: 1993.1.1 3.1.4 Surface treatment of steel materials before spraying - Test methods for metallic materials for use in spraying - Part 3: Speci?cations: 125-1: 1993.1.1 3.1.5 Surface treatment of steel materials before spraying - Test methods for metallic materials for use in spraying - Part 4: Speci?cations: 125-1: 1993.1.1 3.1.6 Surface treatment of steel materials before spraying - Test methods for metallic materials for use in spraying - Part 5: Speci?cations: 125-1: 1993.1.1 3.1.7 Surface treatment of steel materials before spraying - Test methods for metallic materials for use in spraying - Part 6: Speci?cations: 125-1: 1993.1.1 3.1.8 Surface treatment of steel materials before spraying - Test methods for metallic materials for use in spraying - Part 7: Speci?cations: 125-1: 1993.1.1 3.1.9 Surface treatment of steel materials This part of GB/T1816 specifies the method for measuring the pressure of metal grinding per unit area by the raw bottle method. 4 Materials 4.1 The purity of the 3-pole heat-treated steel or deionized water shall be at least 1S2656:1. 5 Equipment In addition to the test instrument and the glassware, the following equipment shall also be included. 5.1 Gray-scale temperature: scmL, bottle with capillary tube, 5.2 Balance, weigh the material to the nearest 0.01 g: 6 Sampling, according to GB/T 19816.1-9005, take a representative sample of the product to be tested, GB/T 19816.4--20C5/1S 11.125-4:19937, collect duplicate samples and measure them in parallel. 7.1 Weigh the clean and dry material in the bottle (5.2) to the nearest 5.1) (m). Add about 1m 7.3 Add the static water or the water from the manufacturer (2.1) into the pycnometer until it is completely full. Then shake the pycnometer gently to remove the air attached to the sample. After adding the water, pour out the remaining water through the paper tube. Carefully lower the outside of the pycnometer. Make sure there is no air in the pycnometer. Then weigh the contents of the pycnometer. 7.4 Empty the pycnometer and let the sample flow for ten seconds. Next, remove the traces of the loading material. Then keep the water or remove the water, and keep the car in a cool and dry place. According to the following, the weight of the bottle is higher than the weight of the car!). Note: Try not to have direct contact with the bottle to prevent it from being treated. The bottle, material and the original should be kept in the same room as much as possible. 8 Conclusion
The unit of the measured product density is expressed in dry grams per cubic meter (kg/m3), and the formula (1) is used for calculation:
px - (mm *p × 1ce
is the average value of the effective mass of the test bottle and the sample, in grams (g); the value of the pressure of the test bottle, the sample and the water, in grams (g); the mass of the water at the test temperature, in kg/m3 (kg/cm3). If the difference between the two test results exceeds 13)g/ml, repeat the operation according to the steps in the first chapter. Calculate the average time between the two effective test results. The test report shall contain at least the following contents: According to TS (11124 reference) See Appendix 4) List the required parts and identify all the necessary details of the tested product: h) Standard number of this part (B/19816.42005):;
Differences from existing test methods;
Test period
Test procedures
Appendix A
(informative appendix)
GB/T19816.4-2005/ISKJ11125-4, 1993 International standards for metal abrasives for blast cleaning 1SO-1124 and 1SC>11125 show the technical requirements and reduced standards for metal abrasives for blast cleaning. IS) 11124 is a general standard for the technical requirements of abrasives for blast cleaning of steel surfaces before coating, and consists of the following parts: Part 1: Introduction and classification; Part 2: Chilled cast steels; Part 3: High carbon steels; Part 4: Low carbon steels; Part 5: Durable steels.
ISC>11125 is a general standard for the treatment of abrasive materials before and after spraying, and consists of the following parts:
Part 2: Determination of particle size distribution;
Part 3: Determination of carbon content;
Part 4: Determination of apparent density;
Part 5: Determination of percentage of defective particles and microstructure;
Part 1: Determination of foreign matter;
Part 7: Determination of water content;
Part 8: Determination of the properties of materials; the corresponding national standard for the "pressure indication of abrasive particles for spraying and deburring" is available at UB/118835.I2002 Technical specifications and classification of general-purpose metal abrasives for surface treatment of polyester materials (SO-112 + 1.1MO) GR/T19816.1-305/50--123-1.199 Test methods for metal abrasives for surface treatment of steel materials before spraying Part 1: Sampling (ISO1112:1:993.[T]:GB/T198-5.22005/IS011125-2:1S93 Test methods for metal abrasives for surface treatment of coated materials Part 2 Determination of particle size (IS011125-219 93.1DT): GH/T19815.3-205/19)11125-31U3 Test method for cleaning the surface of steel materials before coating with gold abrasives - Part 3 (91135-3: 15931D: GH/110515.4: 2C05/[S011125-4:2993 Test method for cleaning the surface of steel materials before coating with gold abrasives - Part 4, Determination of surface alkane content S0111251, 1993, J3T).
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