GB/T 21944.2-2022 English PDFUS$209.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 21944.2-2022: Special products of silicon carbide - Kiln furniture of reaction bonded silicon carbide - Part 2: Special shape beams Status: Valid GB/T 21944.2: Historical versions
Basic dataStandard ID: GB/T 21944.2-2022 (GB/T21944.2-2022)Description (Translated English): Special products of silicon carbide - Kiln furniture of reaction bonded silicon carbide - Part 2: Special shape beams Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: J43 Word Count Estimation: 10,170 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 21944.2-2022: Special products of silicon carbide - Kiln furniture of reaction bonded silicon carbide - Part 2: Special shape beams---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order. Special products of silicon carbide - Kiln furniture of reaction bonded silicon carbide - Part 2.Special shapebeams ICS 25.100.70 CCSJ43 National Standards of People's Republic of China Replacing GB/T 21944.2-2009 Silicon carbide special products reaction sintered silicon carbide kiln furniture Part 2.Profiled Beams Published on 2022-07-11 2023-02-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration forewordThis document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" drafted. This document is the second part of GB/T 21944 "Silicon Carbide Special Products Reaction Sintered Silicon Carbide Kiln Furniture". GB/T 21944 has The following sections were published. --- Part 1.Square beams; --- Part 2.Special-shaped beams; --- Part 3.Roller bars; --- Part 4.Burner cover. This document replaces GB/T 21944.2-2009 "Reaction Sintered Silicon Carbide Kiln Furniture for Special Silicon Carbide Products - Part 2.Special-shaped Beams", Compared with GB/T 21944.2-2009, in addition to structural adjustment and editorial changes, the main technical changes are as follows. a) Modified normative references (see Chapter 2, Chapter 2 of the.2009 edition); b) Changed the code in the product classification (see Chapter 4, Chapter 3 of the.2009 edition); c) Changed the basic dimensions of angle beams, I-shaped beams, triangular beams and the schematic diagram of the shape of triangular beams (see 4.1.2, 4.1.3, 4.1.4, 3.1.2, 3.1.3, 3.1.4 of the.2009 edition); d) The requirements for chemical composition have been changed (see 5.1, 4.1 of the.2009 edition); e) Changed the detection method of chemical composition (see 6.1, 5.1 of the.2009 edition); f) The detection method of bulk density and apparent porosity in physical properties has been changed (see 6.2.1, 5.2.1 of the.2009 edition); g) The detection method of surface pits and corner defects in the appearance has been changed (see 6.3.1, 5.4.1 of the.2009 edition). Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed by China Machinery Industry Federation. This document is under the jurisdiction of the National Abrasives Standardization Technical Committee (SAC/TC139). This document is drafted by. Weifang Huamei Fine Technology Ceramics Co., Ltd., Shandong Jinhong New Materials Co., Ltd., Weifang Zhida Specialty Ceramics Co., Ltd. The main drafters of this document. Wang Mingfeng, Shi Wei, Zhang Huaishun, Li Mingxin, Guo Huanjun, Li Weiqiang, Liu Aiwei. The previous versions of this document and its superseded documents are as follows. ---First published in.2009 as GB/T 21944.2-2009; ---This is the first revision.IntroductionReaction sintered silicon carbide kiln furniture is currently mainly divided into four categories. square beam, special-shaped beam, roller bar and burner sleeve due to different uses and application fields. There are big differences in the classification, performance and technical requirements of these four types of products. In order to scientifically and rationally analyze the technology of reaction sintered silicon carbide kiln furniture The technical content is standardized and coordinated. GB/T 21944 "Silicon Carbide Special Products Reaction Sintered Silicon Carbide Kiln Furniture" is planned to consist of four parts. constitute. --- Part 1.Square beams. The purpose is to establish the technical specifications for reaction sintered silicon carbide kiln furniture such as square beams. --- Part 2.Special-shaped beams. The purpose is to establish the technical specification for reaction sintered silicon carbide kiln furniture such as special-shaped beams. --- Part 3.Roller bar. The purpose is to establish the technical specification for reaction sintered silicon carbide kiln furniture such as rollers. --- Part 4.Burner cover. The purpose is to establish the technical specification for the reaction sintered silicon carbide kiln furniture such as burner sleeves. Silicon carbide special products reaction sintered silicon carbide kiln furniture Part 2.Profiled Beams1 ScopeThis document specifies the product classification, technical requirements, test methods, inspection rules, packaging, marking, transportation of special-shaped beams of reactive sintered silicon carbide and storage. This document applies to reaction-sintered silicon carbide profiled beams that are used at temperatures not higher than 1350°C.2 Normative referencesThe contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document. GB/T 6569 Test method for bending strength of fine ceramics GB/T 10325 Sampling inspection rules for acceptance of shaped refractory products GB/T 14390 Test method for high temperature bending strength of fine ceramics GB/T 16546 General provisions for packaging, marking, transportation, storage and quality certificates of shaped refractory materials GB/T 16555 Chemical Analysis Method of Carbon, Silicon Carbide and Nitride Refractories GB/T 25995 Test method for density and apparent porosity of fine ceramics3 Terms and DefinitionsThere are no terms and definitions that need to be defined in this document.4 product categories4.1 Code, shape and size 4.1.1 Channel beam Code. RBSiC-SB-C, its shape and basic dimensions are shown in Figure 1 and Table 1, respectively. Figure 1 Schematic diagram of the shape of the channel beam ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 21944.2-2022_English be delivered?Answer: Upon your order, we will start to translate GB/T 21944.2-2022_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 21944.2-2022_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 21944.2-2022_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. 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