This standard specifies the classification and marking of non-metallic abrasives used for blast cleaning of steel surfaces before coating. This part applies to the marking of unused non-metallic abrasives. GB/T 17850.1-2002 Technical requirements, guidelines and classification of non-metallic abrasives used for blast cleaning of steel surfaces before coating GB/T17850.1-2002 Standard download decompression password: www.bzxz.net
This standard specifies the classification and marking of non-metallic abrasives used for blast cleaning of steel surfaces before coating. This part applies to the marking of unused non-metallic abrasives.

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National Standard of the People's Republic of China
GB/T17850.1—2002
Surface preparation of steel before coating
Technical requirements, guidelines and classification of non-metallic abrasives for blast cleaning
Preparation of steel substrates before application of paints and related products-Specifications for non-metallic blast-cleaning abrasives-General introduction and classification (JSO 11126-1:1993, Preparation of steel substrates before application of paints and related products--Specifications for non-metallic blast-cleaning abrasives--Part i:Gencral introduction and classification, MOD)
2002-09-13 Issued by
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
2003-03-01 Implementation
W. Before
GB/T 17850.1—2002
This part of GB/T 17850 is a revision of ISO 11126-1:1993 Technical requirements for non-metallic abrasives for blast cleaning of steel surfaces before coating. Part 1: Guidelines and classification 3. It is equivalent to the international standard in technical content. The format of this standard is in accordance with the provisions of GB/T 1.1—2000. Compared with ISO 11126 1:1993, Appendix A of the introduction is deleted; the format of the chapter "Marking" of the international standard is modified. 1SO11126 is under the general title "Technical requirements for non-metallic abrasives for blast cleaning of steel surface treatment before coating" and consists of the following parts: Part 1: Guidelines and classification Part 2: Silica sand Part 3: Copper refining slag Part 4: Coal furnace slag Part 5: Nickel refining slag Part 6: Ironmaking slag Part 7: Molten alumina Part 8: Olivine sand Part 9: Ningshi Part 10: Garnet Part 2, Part 1, Part 9 and Part 10 are still under development. The above Part 3 has been formulated as a national standard, namely GB/T17850.3-1999 Surface treatment of steel before coating - blast cleaning Technical requirements for non-metallic abrasives for blast cleaning (ECV1S) 111263:1993) This part is part of the standard requirements for non-metallic abrasives for blast cleaning 18011126: Test methods for commonly used non-metallic abrasives for blast cleaning are given in IS) 11127 JS) 11127. Under the general title "Test methods for non-metallic abrasives for blast cleaning of steel substrates before coating", it consists of the following parts: Part 1: Sampling t||Part 2: Determination of particle size distribution
Part 3: Determination of apparent density
Part 4: Assessment of hardness by glass slide test
Part 5: Determination of water content
Part 6: Determination of conductivity of leached wave
Part 7: Determination of water-soluble oxides
Part 8: Determination of spray rack performance
The above parts 1-7 are formulated as national standards, namely CR/T17849-1999 Test methods for non-metallic abrasives for blast cleaning of steel surfaces before coating (C15011127:1993) Requirements for metallic abrasives for blast cleaning are given in ISO11124. ISO11124, under the general title "Technical requirements for metal abrasives for blast cleaning of steel surfaces before coating", consists of the following parts: Part 1: Guidance and classification Part 2: Cast iron sand Part 3: High carbon cast steel shot and grit Part 4: Low carbon cast steel shot Part 5: Steel wire segments Part 5 is currently under preparation. Test methods for metallic abrasives for blast cleaning are given in ISO11125. ISO 11125 consists of the following parts under the general title "Surface preparation of steel substrates before coating - Test methods for metallic abrasives for blast cleaning": Part 1: Sampling Part 2: Determination of particle size distribution Part 3: Determination of hardness Part 1: Determination of apparent density Part 5: Determination of percentage of defective particles and microstructure Part 6: Determination of foreign matter Part 7: Determination of water content Abrasive blast cleaning technology is widely used for surface cleaning and preparation. When formulating the international standard series for the surface preparation of steel substrates before coating, it was decided to formulate a series of international standards covering the commonly used blast cleaning abrasives for steel surface preparation. The type and particle shape of the blast cleaning abrasive will seriously affect the surface preparation and the surface roughness after treatment. The supplementary part of ISO 8501-1 gives typical photos of the changes in the surface of steel substrates when blast cleaning with different abrasive types. (ISO8501-1:1988/Supp. Surface preparation of steel before coating - Visual assessment of surface cleanliness - Part 1: Rust grades and rust removal grades for uncoated steel and steel after complete removal of existing coatings - Supplement: Typical sample photos of color changes on steel surfaces blasted with different abrasives).
JS) 8505-2 gives the comparative characteristics of surface roughness after surface treatment, and Table 1 in Part 1 of ISO011126 specifies the comparative types of abrasives used for blasting. (ISO) 85032:1988 Surface preparation of steel before coating - Roughness characteristics of steel surfaces blasted with abrasives - Part 2: Comparative sample method for roughness classification of steel surfaces blasted with abrasives) This part was proposed by China Shipbuilding Industry Corporation. This part is under the jurisdiction of China Shipbuilding Industry Ship Technology Research Institute. This part was drafted by China Shipbuilding Industry Comprehensive Technology and Economic Research Institute. This part is mainly written by: Mi Yanyuan, W. Surface treatment of steel before coating
Technical requirements for non-metallic abrasives for blast cleaning
CB/T 17850-1—2002
Warning: Equipment, materials and abrasives used for surface treatment may be dangerous if they are not used with care. Many countries have regulations for materials that are considered dangerous during use and after use (waste management), such as free silica, carcinogens or toxic substances. Therefore, these regulations should be followed, and it is important to ensure that adequate guidance is given and all required precautions are implemented. 1 Scope
This part of GB/T 17850 specifies the classification and marking of non-metallic abrasives (hereinafter referred to as non-metallic abrasives) for blast cleaning of steel surfaces before coating.
This part is also used for the calibration of non-metallic abrasives that have been used. NOTE 1 Although this part 1501112G is specifically formulated to meet the requirements for the treatment of steel components, the characteristics specified are generally applicable to surfaces and parts of other materials treated by blasting techniques. These techniques are specified in 1508:014-2, 2000 Methods for the preparation of surfaces before application of paint Part 2: Abrasive blast-cleaning 3. 2 Terms and definitions
The following terms and definitions apply to this part of GB/117850: 2.1
Bliast-cleaning Abrasive Solid material treated by abrasive blast-cleaning. 2.2
Abrasive blast-cleaning A surface preparation method in which a high-energy abrasive stream is applied to the surface to be cleaned. 2.3
Shot
The main shape is round, the length is not more than twice the maximum particle width, and there is no core edge, broken and other sharp surfaces.
Grit
The main shape is fish-shaped, with broken sections and sharp edges, and the cross-section shape is less than half of the cross-section. 3 categories
3.1 Abrasive Types
Non-metallic abrasives should be classified by material, source or method of manufacture. See Table 1 for the commonly used non-metallic abrasives for steel surface treatment. Note: The non-metallic abrasives listed in Table 1 are only those commonly used for surface treatment of coated materials. They are not non-metallic materials. W.GR/T 17850.1 2002
Natural products
Non-metallic abrasives commonly used for radiative cleaning of steel surfaces
Olivine
Cross-metal
Smelting slag (calcium silicate)
Copper smelting
Synthetic
Smelting slag (iron silicate)
Coal slag silicate
Chemical energy melting
Initial particle shape
Comparison specimens are used when evaluating the final surface roughness. The method for evaluating the surface roughness using comparison specimens is specified in 1S035032. 3.2 Initial particle shape The initial particle shape refers to the geometric shape of the abrasive particles. The initial particle shape of non-metallic abrasives and their symbols are shown in Table 2. Note 3: Since the particle shape of the abrasive will change after use, the particle shapes specified in each part of B/T 1781 refer to the initial particle shape. 2 Initial particle shape The initial particle shape is also called the pellet shape. The shape of the sand is an irregular shape. 3. 3 Particle size range Non-metallic abrasives are a mixture of particles of different sizes and should be classified according to the size range. 4 Marking Symbol The product marking of non-metallic abrasives consists of the following three parts: product name, technical characteristic value and standard number. The representation method is: CB/T 17855.1
Symbol for initial particle shape
Abrasive code
W. Marking:
GB/T 17850.1-2002
In accordance with the requirements of the corresponding parts of GB/17850, the initial particle shape is "sand" and the particle size range is 0.2mm~0.5mm. The non-metallic coal furnace abrasive is marked as:
Abrasive N/CSG0.2~0.5
GB/T 17850.1
It is necessary to mark this complete product mark on the order form. Marking and marking
All supplies shall be clearly marked or marked directly or together with the shipping order in accordance with the provisions of Chapter 1. W.bzsosocom
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