Search result: GB/T 2484-2023 (GB/T 2484-2018 Older version)
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Bonded abrasive products - Shape types, designation and marking
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GB/T 2484-2023
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Bonded abrasive products -- General requirements
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Bonded abrasive products -- General requirements
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Symbols and designation for bonded abrasive products
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Symbols for bonded abrasives
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| Standard ID | GB/T 2484-2023 (GB/T2484-2023) | | Description (Translated English) | Bonded abrasive products -- Shape types, designation and marking | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J43 | | Classification of International Standard | 25.100.70 | | Word Count Estimation | 29,243 | | Date of Issue | 2023-11-27 | | Date of Implementation | 2024-06-01 | | Older Standard (superseded by this standard) | GB/T 2484-2018 | | Issuing agency(ies) | State Administration for Market Regulation, National Standardization Administration |
GB/T 2484-2023: Shape types, markings and markings for bonded abrasive tools
ICS 25:100:70
CCSJ43
National Standards of People's Republic of China
Replace GB/T 2484-2018
Bonded Abrasive Shape Types, Markings and Symbols
(ISO 525:2020,MOD)
Published on 2023-11-27
2024-06-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Table of contents
Preface III
1 range 1
2 Normative references 1
3 Terms and Definitions 1
4 Dimension symbols 1
5 shape type 2
5:1 Shape code, name and size marking 2
5:2 Circumferential profile 17
6 Characteristics 18
6:1 General requirements 18
6:2 Types of abrasives 18
6:3 Abrasive particle size 19
6:4 Hardness grade 19
6:5 Organization number 19
6:6 Types of binders 19
6:7 Maximum working speed 19
7 Mark 20
8 flag 20
8:1 Marking of grinding wheels and grinding heads20
8:2 Millstone and sand tile markings 21
Appendix A (informative) This document is compared with ISO 525:2020 structure number comparison list 22
Appendix B (informative) List of technical differences between this document and ISO 525:2020 and their reasons 23
Reference 24
Preface
This document complies with the provisions of GB/T 1:1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents"
Drafting:
This document replaces GB/T 2484-2018 "General Requirements for Bonded Abrasives": Compared with GB/T 2484-2018, except for structural adjustments and
In addition to editorial changes, the main technical changes are as follows:
a) The meanings of the dimension symbols H, K, L, R, U and
Chapter, Chapter 3 of the:2018 edition);
b) Added shape codes 18B, 18P, 3105, 3106, 5412, 5421 and related content (see 5:1, 4:1 of the:2018 edition);
c) The original "Requirements" chapter has been changed to the "Characteristics Regulations" chapter, and the dimensions, limit deviations, geometric tolerances, allowable unbalance, etc: have been deleted:
Capacity (see Chapter 6, Chapter 5 of the:2018 edition);
d) Some parts of the logo have been changed (see 8:1, 8:2, 7:1, 7:2 of the:2018 version):
This document has been modified to adopt ISO 525:2020 "Shape Types, Markings and Markings of Bonded Abrasive Tools":
Compared with ISO 525:2020, this document has many structural adjustments: See the comparison list of structure number changes between the two files:
Appendix A:
Compared with ISO 525:2020, this document has many technical differences: Use vertical single words in the outer margin of the clauses involved:
The line (︱) is marked: A list of these technical differences and their causes is provided in Appendix B:
The following editorial changes have been made to this document:
---Deleted the notes in the scope and ISO 6103 and ISO 13942 in the references;
---Adjust the instructions indicating the working surface symbols of bonded abrasive tools in Table 1 to Table 2;
---Deleted the note in 5:1;
---Deleted footnote b and footnote c in Table 2;
---Deleted the example in 5:2;
---Adjust footnote c in Figure 1 to footnote 1, and extend footnote d to footnote c;
---Change ISO 603 in the reference to GB/T 4127:
Please note that some content in this document may be subject to patents: The publisher 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 and Abrasives Standardization Technical Committee (SAC/TC139):
This document was drafted by: Zhengzhou Abrasives and Grinding Tools Grinding Research Institute Co:, Ltd:, Baige Abrasives and Grinding Tools Co:, Ltd:, Zhuhai Great White Shark Abrasives Mill
Tools Co:, Ltd:, Shandong Luxin Sisha Taishan Grinding Tools Co:, Ltd:, Ningbo Dahua Grinding Wheel Co:, Ltd:, Suzhou Far East Grinding Wheel Co:, Ltd:
The main drafters of this document: Bao Hua, Zhang Liang, Zhang Lin, Xiong Mingfang, Yang Shaojun, Yu Jiayin, Lin Yishu, Liu Zhong, Si Wenyuan, Wang Xuetao,
Shi Haifeng, Tang Jihui:
This document was first published in 1981, revised for the first time in 1984, revised for the second time in:1994, revised for the third time in:2006, and revised in:2018
The fourth revision, this is the fifth revision:
Bonded Abrasive Shape Types, Markings and Symbols
1 Scope
This document specifies the following contents of bonded abrasive tools:
a) Dimension symbols;
b) shape type;
c) Characteristics provisions;
d) mark;
e) logo:
This document applies to bonded abrasive tools (such as grinding wheels, grinding heads, sand tiles and grinding stones):
This document does not apply to superabrasive products and coated abrasives:
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations
For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to
this document:
GB/T 2476 Common abrasive code
GB/T 2481:1 Detection and marking of abrasive grain size composition for bonded abrasive tools Part 1: Coarse abrasive grains F4~F220
(GB/T 2481:1-1998,ISO 8486-1:1996,eqv)
GB/T 2481:2 Detection and marking of abrasive particle size composition for bonded abrasive tools Part 2: Micropowder (GB/T 2481:2-2020,
ISO 8486-2:2007,MOD)
GB 2494 Safety requirements for bonded abrasive tools
GB/T 16458 Abrasives Terminology
3 Terms and definitions
The terms and definitions defined in GB/T 16458 apply to this document:
4 size symbols
The size symbols of bonded abrasive tools are shown in Table 1:
Table 1 Dimension symbols
Dimension symbol meaning
A The width of the sand tile bottom
B Width of sand tiles and grindstones
C Thickness of sand tiles and grindstones
......
GB/T 2484-2018
(Fixed abrasives are generally required)
ICS 25.100.70
J43
National Standards of People's Republic of China
Replace GB/T 2484-2006
Fixed abrasives are generally required
(ISO 525.2013, MOD)
Published on.2018-09-17
Implementation of.2019-04-01
State market supervision and administration
China National Standardization Administration issued
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 2484-2006 "General requirements for bonded abrasives", major technical changes compared with GB/T 2484-2006
as follows.
--- Added some symbols and meanings (see Table 1, Table 1 of the.2006 edition);
--- Added the basic shape and ruler of the 12-type "disc-shaped grinding wheel", the 29-type "flexible 钹-shaped grinding wheel" and the 40-type "single-sided convex single-sided concave grinding wheel"
Inch mark (see Table 2, Table 2 of the.2006 version);
--- Modified the basic shape and size mark of the embedded grinding head, changed from 16, 17a, 17b, 17c, 18a, 18b, 19 to 16, 17, 17R,
18, 18R, 19, 19R type (see Table 2, Table 2 of the.2006 edition);
--- Modified the 3102 type "flat convex sand tile" and 3103 "convex flat sand tile" size C mark, that is, the length of the size C extends to
At the top of the arc (see Table 2, Table 2 of the.2006 edition);
--- Modified the basic shape and size marking of the Type 52 "handle grinding head" (see Table 2, Table 2 of the.2006 edition);
--- Revised the corresponding size standard for each type of fixed abrasive, modified from the unified GB/T 4127 to the corresponding part of GB/T 4127
(See Table 2, Table 2 of the.2006 edition);
--- Increased the application range of the circumferential profile, that is, in addition to the flat grinding wheel, it also includes single-sided concave or double-sided concave and single-sided convex or double-sided convex grinding wheel
(See 4.2, 5.1 of the.2006 edition);
--- Modified the shape of the G-shaped circumferential profile, added the S-shaped circumferential profile and changed the U in all circumferential profiles to X (see Figure 1,
Figure 1) of the.2006 edition;
--- Removed the outer diameter, thickness and aperture size range (see.2006 edition of 5.2.1~5.2.3);
--- Revised the specification of dimensional limit deviation and geometrical tolerance (see 5.2, 5.3 of.2006 edition);
---Modified the specification of abrasive grain size (see 5.5, 5.5.2,.2006 edition);
--- Added shellac binder (see Table 4, Table 8 of the.2006 edition);
--- Modified the way the mark is expressed (see Chapter 6, Chapter 6 of the.2006 edition);
--- Modified the contents of the logo (see Chapter 7, Chapter 7 of the.2006 edition).
This standard uses the redrafting method to modify the use of ISO 525.2013 "Consolidation Abrasives General Requirements."
This standard has more structural adjustments than ISO 525.2013. Appendix A lists the chapters of this standard and ISO 525.2013.
The bar number comparison list.
The technical differences between this standard and ISO 525.2013 and their reasons are as follows.
---About the normative reference documents, this standard has made technical adjustments to adapt to China's technical conditions, adjustments
The situation is reflected in Chapter 2, “Regulatory References”, and the specific adjustments are as follows.
● Added reference to GB/T 4127 (all parts) (see 5.1);
● Replace ISO 13942 with GB/T 2485 (see 5.2);
● Replace ISO 6103 with GB/T 2492 modified with international standards (see 5.3);
● Added reference to GB/T 2476 (see 5.4);
● Replace ISO 8486-1 with GB/T 2481.1 with international standards (see 5.5);
● Replace ISO 8486-2 with GB/T 2481.2 (see 5.5);
● Added reference to GB 2494 (see 5.9);
--- Removed the length symbol L2 of the handle with a handle, because China uses L to indicate the length of the handle with a handle, and does not use L to indicate the handle
The total length of the grinding head; modified the symbol of the diameter of the handle with a handle, changed from Sd to S, to adapt to our habits;
--- Added 8 type "double-sided concave 2nd", 12a type "disc type 1", 12b type "disc type 2" grinding wheel to adapt to the actual situation in China
Happening;
--- Increased the specific shape of the 31 type "sand tile", 52 type "handle grinding head", 54 type "honing stone" and 90 type "grinding stone", more clear
Clear and easy to operate;
--- Increased Q-shaped and S-shaped circumferential profiles, because Q-shaped circumferential profiles exist in China, S-shaped circumferential profiles are flat glass mills
Used by grinding wheels;
---Modified the dimension mark in the circumferential profile, change "T" to "T(U)", "U" to "X", because of the one-sided convex and double-sided convex grinding wheel
The circumferential profile should be "U" instead of "T";
--- Removed the characteristics of the mixed abrasive type, mixed abrasive particle size, porosity and manufacturer's special code, due to international standards
These are optional and the provisions given by international standards are not material;
---Modify the type of abrasive as GB/T 2476, because the type of abrasive given in the international standard is too simple, China's national standard
There are more detailed and complete regulations;
--- Increased abrasive grain size
The main drafters of this standard. Bao Hua, Zhang Liang, Liu Minqiang, Zheng Chunhe, Zou Yanling, Tan Suozhen, Liu Jianhua, Shi Haifeng, Lu Shenfeng.
The previous versions of the standards replaced by this standard are.
---GB/T 2484-1981, GB/T 2484-1984, GB/T 2484-1994, GB/T 2484-2006.
Fixed abrasives are generally required
1 Scope
This standard specifies the following contents of bonded abrasives.
a) size symbol;
b) shape code and size mark;
c) requirements;
d) mark;
e) Logo.
This standard applies to bonded abrasives (such as grinding wheels, grinding heads, sand tiles and grindstones).
This standard does not apply to superabrasive products and coated abrasives.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 2476 ordinary abrasive code
GB/T 2481.1 Determination and marking of abrasive grain size of bonded abrasives - Part 1 . coarse abrasives F4~F220
(GB/T 2481.1-1998, eqvISO 8486-1.1996)
GB/T 2481.2 Fixed abrasives - Determination and marking of abrasive grain size - Part 2
GB/T 2485 fixed abrasive technical conditions
GB/T 2492 bonded abrasives delivered grinding wheel allowable unbalanced static measurement (GB/T 2492-2017, ISO 6103.
2014, MOD)
GB 2494 bonded abrasive safety requirements
GB/T 4127 (all parts) fixed abrasive size
3 size symbol
See Table 1.
Table 1 size symbols and their meanings
Size symbol meaning
A sand tile small bottom width
B The width of the sand tile and the grindstone
C thickness of sand tile and grindstone
D Abrasives outer diameter
E Thickness at the hole of the cup, bowl, dish, sauce, concave and 砂 wheel
......
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