GB/T 27979-2011 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 27979-2011 | English | 150 |
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GB/T 27979-2011: Alumina Ceramic Wear-Resistant Composite Lining Board---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT27979-2011
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 81.060.30
Q 32
Alumina Ceramic
Wear-Resistant Composite Lining Board
Issued on. DECEMBER 30, 2011
Implemented on. OCTOBER 01, 2012
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of PRC.
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative References... 4
3 Definitions... 5
4 Technical Requirements... 5
5 Inspection Methods... 7
6 Inspection Rules... 8
7 Marking, Package, Transportation and Storage... 10
Appendix A (Normative) Volume Wear Test of Alumina Wear-Resistant
Ceramic... 11
Appendix B (Normative) Adhesive Strength Test between Rubber and
Ceramic... 13
Appendix C (Informative) Performance of Adhesive for Lining Board... 15
Foreword
This Standard was drafted as per the rules specified in GB/T 1.1-2009 Directives for
Standardization – Part 1.Structure and Drafting of Standards.
This Standard was proposed by China Building Material Federation.
This Standard shall be under the jurisdiction of National Technical Committee for
Standardization of Industrial Ceramic (SAC/TC 194).
Drafting organizations of this Standard. Hunan Jingcheng Special Ceramic Co., Ltd.;
Hebei Kunpeng Wear-Resistant Technology Co., Ltd.; Fujian Johnson Mining Co., Ltd.;
Beijing Zhongdian Lianzhong Power Technology Co., Ltd.; and Beijing Tianlilai
Technology Development Co., Ltd.
Chief drafting staffs of this Standard. Yang Changgui, and Chen Xiaomin.
This Standard was the first-time formulated.
Alumina Ceramic
Wear-Resistant Composite Lining Board
1 Scope
This Standard specifies the definitions, technical requirements, inspection methods,
inspection rules, marking, package, transportation and storage of alumina ceramic
wear-resistant composite lining board (hereinafter referred to as “lining board”).
This Standard is applicable to the wear-resistant ceramic composite lining board with
alumina content no less than 92%, and consisting of ceramics.
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) are applicable to this document.
GB/T 230.1 Metallic Materials - Rockwell Hardness Test - Part 1.Test Method
(Scales A, B, C, D, E, F, G, H, K, N, T)
GB/T 528 Rubber, Vulcanized or Thermoplastic - Determination of Tensile Stress-
Strain Properties
GB/T 531.1 Rubber Vulcanized or Thermoplastic - Determination of Indentation
Hardness - Part 1.Durometer Method (Shore Hardness)
GB/T 532 Rubber, Vulcanized or Thermoplastic - Determination of Adhesion to
Textile Fabric
3 Definitions
For the purposes of this document, the following definitions apply.
3.1 Alumina ceramic wear-resistant composite lining board
It is made of alumina wear-resistant ceramic sheet, rubber, adhesive, etc.; its structure
is shown in Figure 1.
3.2 Volume wear
Place the alumina ceramic wear-resistant lining board in the sand-blast equipment;
spray (see Appendix A) the lining board with special specification by the specified
condition;
3.3 Adhesive strength
The interfacial bonding strength between the alumina wear-resistant ceramic sheet
and the rubber is called the adhesive strength, expressed in A.
4 Technical Requirements
4.1 Appearance
The appearance of the lining board shall meet the requirements of Table 1.
4.2 Size requirements
4.2.1 The size and specification of lining board shall be determined by each company
situation and the user’s special requirements.
4.3 Material requirements
4.3.1 The performance of alumina wear-resistant ceramic sheet shall meet the
requirements of Table 2.
5 Inspection Methods
5.1 Appearance inspection
5.1.1 Appearance inspection of the ceramic layer in lining board
The appearance, color of surface shall be visually examined or use the Vernier caliper
with accuracy no less than 0.02mm to inspect.
5.1.3 Bending test
Hold the opposite sides or opposite angles of the lining board with two hands; place it
onto a die body with length 700mm, height 450mm, and bending radius 75mm; so that
the lining board is in close contact with the die body; bending the radius for
150mm~200mm, repeat for 10 times; then observe the results.
5.2 Size inspection
Use a ruler to measure the side length of the lining board. The spacing between the
alumina wear-resistant ceramic sheets, and the thickness of lining board shall be
measured by Vernier caliper with accuracy of no less than 0.02mm.
5.3 Material inspection
5.3.1 Performance inspection of alumina wear-resistant ceramic sheet in lining
board
5.3.2 Performance inspection of rubber in lining board
5.3.2.1 Tensile strength. test as per the method specified in GB/T 528.
5.3.3 Adhesive strength between rubber and ceramic
Sampling and testing as per the method specified in GB/T 532 (see Appendix B).
6 Inspection Rules
6.1 Inspection classification
6.1.1 Exit-factory inspection
The exit-factory inspection items include appearance, size, volume wear, volume
density, Rockwell hardness, adhesive strength between rubber and ceramic.
6.1.2 Type inspection
6.2 Sampling
6.2.1 Group batching
500m2 lining boards with the same category and the same color-number as one batch;
for the lining boards less than 500m2 shall be calculated as one batch or determined
through the negotiation between the supplier and the purchaser. Randomly take 2m2
(the number of lining board is no less than 30 blocks) from each batch.
6.3 Judgment rules
6.3.1 Appearance. if the number of the unqualified products is less than or equal to 3
blocks, then the index for such batch of products shall be judged to be qualified.
6.3.2 Size. if the number of the unqualified products is less than or equal to 3 blocks,
then the index for such batch of products shall be judged to be qualified. If the number
of unqualified products in the first inspection exceeds 3 blocks, then double the
samples for reinspection
6.3.3 If one of the other indexes specified in Clause 5 of this Standard is unqualified,
then such batch shall be judged to be unqualified.
7 Marking, Package, Transportation and Storage
7.1 Marking
The package shall have the markings such as product name, category, enterprise
name, address, production date, specification, quantity, ant-corrosion, throwing-
prohibited, execution standard, etc.
7.3 Transportation and storage
The product transportation and storage shall be anti-corrosion, explosion-proof, and
throwing-prohibited.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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