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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: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 21944.2-2022 | English | 209 |
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Special products of silicon carbide - Kiln furniture of reaction bonded silicon carbide - Part 2: Special shape beams
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GB/T 21944.2-2022
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| GB/T 21944.2-2009 | English | 479 |
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Special products of silicon carbide -- Kiln furniture of reaction bonded silicon carbide -- Part 2: Special beam
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GB/T 21944.2-2009
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PDF similar to GB/T 21944.2-2022
Basic data | Standard 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
foreword
This 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.
Introduction
Reaction 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 Beams
1 Scope
This 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 references
The 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 ceramics
3 Terms and Definitions
There are no terms and definitions that need to be defined in this document.
4 product categories
4.1 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
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