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GB/T 1427-2016 PDF English

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GB/T 1427-2016: Sample method of carbon material
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GB/T 1427: Historical versions

Standard IDUSDBUY PDFDeliveryStandard Title (Description)Status
GB/T 1427-2016150 Add to Cart Auto, 9 seconds. Sample method of carbon material Valid
GB/T 1427-2000279 Add to Cart 3 days Sample method of carbon material Obsolete
GB/T 1427-1988RFQ ASK 3 days Method for the sample of carbonaceous materials Obsolete

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GB/T 1427-2016: Sample method of carbon material

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GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 29.050 Q 50 Replacing GB/T 1427-2000 Sample method of carbon material Issued on. JUNE 14, 2016 Implemented on. MAY 01, 2017 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.

Table of Contents

Foreword... 4 1 Scope... 6 2 Normative references... 6 3 Graphite electrodes and joints (including general power, impregnation, high power, ultra-high power), graphite electrode roasting products... 6 4 Graphite anodes... 7 5 Graphite blocks... 8 6 Cathode carbon blocks for aluminum electrolysis cells... 9 7 Carbon electrodes... 10 8 Electric furnace carbon blocks, self-baking carbon blocks, blast furnace carbon blocks... 10 9 Carbon resistance rods... 11 10 Carbon paste (electrode paste, anode paste, cathode paste, carbon ramming materials)... 12 11 Carbon cement, carbon mud... 12 12 High purity graphite products... 13 13 Isostatic graphite... 13 14 Carbon substrates for solar power generation... 14 15 Fine-particle high-density special graphite products... 14 16 Mesophase carbon microspheres, soft carbon, hard carbon... 15 17 Spherical graphite... 16 18 Graphite anode materials, carbon composite lithium iron phosphate cathode materials, lithium titanate and carbon composite anode materials, etc... 16 19 Other specifications... 17

Foreword

This Standard is drafted in accordance with the rules given in GB/T 1.1-2009. This Standard replaces GB/T 1427-2000 “Sample method of carbon material”. Compared with GB/T 1427-2000, the main technical content changes of this Standard are as follows. - ADD the normative references (see Clause 2); - MODIFY the sampling requirements for graphite electrodes and joints (see 3.2, 3.3, 3.4); - MODIFY the sampling requirements for graphite blocks (see 5.2); - MODIFY the sampling requirements for cathode carbon blocks for aluminum electrolysis cells (see 6.1, 6.2, 6.3, 6.4); - MODIFY the sampling requirements for electric furnace carbon blocks, self- baking carbon blocks and blast furnace carbon blocks (see 8.1, 8.3, 8.4); - MODIFY the sampling batch requirements for carbon resistance rods (see 9.1); - MODIFY the type and the sampling batch requirements for charcoal paste (see Clause 10); - ADD the sampling requirements for carbon cement and carbon mud (see Clause 11); - ADD the sampling requirements for isostatic graphite (see Clause 13); - ADD the sampling requirements for carbon substrates for solar power generation (see Clause 14); - ADD the sampling requirements for fine-particle high-density special graphite products (see Clause 15); - ADD the sampling requirements for mesophase carbon microspheres, soft carbon, hard carbon (see Clause 16); - ADD the sampling requirements for spherical graphite (see Clause 17); - ADD the sampling requirements for graphite anode materials, carbon composite lithium iron phosphate cathode materials, lithium titanate and carbon composite anode materials (see Clause 18); - ADD the sample storage requirements (see 19.3). This Standard was proposed by China Iron and Steel Industry Association. This Standard shall be under the jurisdiction of National Technical Committee on Steel of Standardization Administration of China (SAC/TC 183). Drafting organizations of this Standard. China Pingmei Shenma Group Kaifeng Carbon Co., Ltd., Shanghai Shanshan Technology Co., Ltd., Zhanjiang Juxin New Energy Co., Ltd., Ningxia Ningping Carbon Co., Ltd., China Metallurgical Information and Standardization Institute. Main drafters of this Standard. Liu Yunping, Zheng Jianhua, Qiao Yongmin, Du Huiyu, Wu Qixiu, Cao Peifeng, Zheng Jingxu, Feng Junjie, Lu Hongbing, Ding Xiaoyang, Zhang Yongbin. The previous released versions replaced by this Standard are as follows. - GB/T 1427-1988, GB/T 1427-2000. Sample method of carbon material

1 Scope

This Standard specifies the sampling tool, sampling position, sampling quantity and specimen size and precision of carbon materials. This Standard is applicable to the taking and preparation of carbon material samples such as graphite electrodes, graphite anodes, graphite blocks, cathode carbon blocks, carbon electrodes, electric furnace carbon blocks, carbon paste, high-purity graphite products, mesophase carbon microspheres.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 13732 General rules for sampling inspection of bulk materials with uniform size

3 Graphite electrodes and joints (including general

power, impregnation, high power, ultra-high power), graphite electrode roasting products 3.1 Sampling batch If the output of graphitized products per furnace is greater than or equal to 30 t, the quantity of sampling electrodes is not less than 4 pieces. If it is less than 30 t, the quantity of sampling electrodes is not less than 3 pieces. 3.2 Sampling tool Hollow drill bits with an inner diameter of not less than 35 mm and a length of 250 mm, or other tools that guarantee the requirements of the specimen. 3.3 Sampling position and method 3.4 Specimen size and precision 3.4.1 Electrodes with a diameter of 550 mm and above are processed into not less than 4 specimens with a size of φ(30 ± 0.1) mm × (180 ± 0.1) mm, which are used to measure the volume density, elastic modulus, resistivity and flexural strength.

4 Graphite anodes

4.1 Sampling batch The products to be loaded into the same graphitization furnace are regarded as one batch. The sampling quantity of each batch shall not be less than one thousandth of the quantity of loaded blocks, but each batch shall have not less than 10 specimens. 4.2 Sampling tool Hollow drill bits with an inner diameter of 60 mm and a length of 150 mm or other tools. 4.3 Sampling position and method 4.4 Specimen size and precision 4.4.1 Products of which the diameter or cross-section thickness of the anode is greater than or equal to 50 mm are processed into 4 ~ 6 specimens with a size of φ(40 ± 0.1) mm × (40 ± 0.1) mm × (40 ± 0.1) mm or φ(45 ± 0.1) mm × (40 ± 0.1) mm, of which the pressurized surface is indicated, and the pressurization direction shall be parallel to the extrusion direction. In addition, it is processed into 4 ~ 6 specimens of φ(10 ± 0.1) mm × (120 ± 0.1) mm for measuring the flexural strength.

5 Graphite blocks

5.1 Sampling batch If the output of each furnace is greater than or equal to 30 t, the sampling quantity is not less than 4 pieces. If it is less than 30 t, the sampling quantity is not less than 3 pieces. 5.2 Sampling tool Hollow drill bits with an inner diameter of not less than 65 mm and a length of not less than 150 mm or other tools. 5.4 Specimen size and precision The cylinders are processed into specimens of (40 ± 0.1) mm × (40 ± 0.1) mm × (40 ± 0.1) mm or φ(45 ± 0.1) mm × (40 ± 0.1) mm. 5.5 Sample appearance The corners are intact and there are no visible cracks or flaws.

6 Cathode carbon blocks for aluminum electrolysis cells

6.1 Sampling batch Every 100 t is one batch. Those less than 100 t are regarded as 100 t. The sampling quantity per batch is not less than 3 pieces. 2 cylinders are drilled in each block. 6.2 Sampling tool Hollow drill bits with an inner diameter of not less than 65 mm and a length of not less than 150 mm or other tools. 6.4 Specimen size and precision The size and precision of the specimen shall be determined in accordance with the requirements of the tested item. However, the minimum size (usually the diameter) of the specimen is at least 3 times the maximum particle size of the dry aggregate. 6.5 Sample appearance The corners are intact and there are no visible cracks or flaws.

7 Carbon electrodes

7.1 Sampling batch Every 100 t is one batch. Those less than 100 t are regarded as 100 t. The sampling quantity per batch is not less than 3 blocks (pieces). 7.2 Sampling tool Hollow drill bits with an inner diameter of 65 mm and a length of not less than 150 mm or other tools. 7.4 Specimen size and precision The cylinders are processed into specimens of (40 ± 0.1) mm × (40 ± 0.1) mm × (40 ± 0.1) mm or φ(45 ± 0.1) mm × (40 ± 0.1) mm. 7.5 Sample appearance The corners are intact and there are no visible cracks or flaws.

8 Electric furnace carbon blocks, self-baking carbon blocks, blast furnace carbon blocks

8.1 Sampling batch Every 100 t is one batch. Those less than 100 t are regarded as 100 t. The sampling quantity per batch is not less than 2 blocks. 8.3 Sampling position and method 8.3.1 USE a hollow drill bit to drill cylinders with a length of not less than 110 mm along the longitudinal direction, at upper, middle and lower sections of the working surface (iron-water pressure-receiving surface) when the product is used. 8.4 Specimen size and precision 8.4.1 The cylinders are processed into specimens of φ(45 ± 0.1) mm × (40 ± 0.1) mm. There are not less than 6 pieces per batch. It shall indicate the pressurization direction, and make the pressurization direction parallel to the pressure direction when the product is used. 8.5 Sample appearance The corners are intact and there are no visible cracks or flaws.

9 Carbon resistance rods

9.1 Sampling batch 20 t ~ 50 t is one batch. The sampling quantity per batch is 4 pieces (respectively 2 pieces in the upper and lower layers of the roasting chamber). 9.2 Sampling tool Saws or machine tools. 9.5 Sample appearance The corners are intact and there are no visible cracks or flaws. 10 Carbon paste (electrode paste, anode paste, cathode paste, carbon ramming materials) 10.1 Sampling batch For electrode paste, anode paste and cathode paste, every 500 t is one batch, and those less than 500 t are regarded as 500 t. For carbon ramming materials, every 100 t is one batch, and those less than 100 t are regarded as 100 t. 10.2 Specimen preparation The number of subsamples sampled from each batch of carbon paste shall not be less than 3, and each subsample shall not be less than 5 kg. ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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