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GB/T 39693.6-2020: Rubber, vulcanized or thermoplastic - Determination of hardness - Part 6: Apparent hardness of rubber-covered rollers by IRHD method
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| GB/T 39693.6-2020 | English | 114 |
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Rubber, vulcanized or thermoplastic - Determination of hardness - Part 6: Apparent hardness of rubber-covered rollers by IRHD method
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GB/T 39693.6-2020
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Basic data | Standard ID | GB/T 39693.6-2020 (GB/T39693.6-2020) | | Description (Translated English) | Rubber, vulcanized or thermoplastic - Determination of hardness - Part 6: Apparent hardness of rubber-covered rollers by IRHD method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G47 | | Classification of International Standard | 83.140.99 | | Word Count Estimation | 6,626 | | Date of Issue | 2020-12-14 | | Date of Implementation | 2021-11-01 | | Quoted Standard | ISO 48-2-2018; ISO 23529 | | Adopted Standard | ISO 48-6-2018, IDT | | Regulation (derived from) | National Standard Announcement No. 28 of 2020 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | | Summary | This standard specifies the method for determining the apparent hardness of rubber rollers (expressed in international rubber hardness). This method is similar in principle to the method of determining rubber hardness in ISO 48-2, and it essentially consists of measuring the depth of the dent caused by a spherical indenter under a prescribed force. The instrument used is similar to that described in ISO 48-2, with a base specially designed for roller surfaces and similar curved surfaces. | GB/T 39693.6-2020: Rubber, vulcanized or thermoplastic - Determination of hardness - Part 6: Apparent hardness of rubber-covered rollers by IRHD method
---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.
(Vulcanized rubber or thermoplastic rubber-Determination of hardness-Part 6: IRHD method to determine the apparent hardness of rubber rollers)
ICS 83:140:99
G47
National Standards of People's Republic of China
Determination of the hardness of vulcanized rubber or thermoplastic rubber
Part 6: IRHD method to determine the apparent hardness of rubber rollers
(ISO 48-6:2018, IDT)
2020-12-14 release
2021-11-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Foreword
GB/T 39693 "Determination of the hardness of vulcanized rubber or thermoplastic rubber" is divided into 9 parts:
---Part 1: Introduction and Guide;
---Part 2: International Rubber Hardness (10IRHD~100IRHD;
---Part 3: Use the ultra-low rubber hardness (VLRH) scale to determine the hardness of the test force;
---Part 4: Determine the indentation hardness by the Shore hardness tester method (Shore hardness);
---Part 5: Use the portable international rubber hardness tester to determine the indentation hardness;
---Part 6: IRHD method to determine the apparent hardness of rubber rollers;
---Part 7: Shore hardness method to determine the apparent hardness of rubber rollers;
---Part 8: Zhao's hardness (P
---Part 9: Calibration and verification of the hardness tester:
This part is Part 6 of GB/T 39693:
This section was drafted in accordance with the rules given in GB/T 1:1-2009:
The translation method used in this part is equivalent to ISO 48-6:2018 ``Determination of the hardness of vulcanized rubber or thermoplastic rubber Part 6:
IRHD method to measure the apparent hardness of rubber rollers":
This section also made the following editorial changes:
---In order to clearly indicate the structure of the IRHD hardness tester, an explanation is added in Figure 1 and Figure 2 in 6:2:
This part was proposed by the China Petroleum and Chemical Industry Federation:
This part is organized by the National Rubber and Rubber Products Standardization Technical Committee Rubber Miscellaneous Technical Committee (SAC/TC35/SC7)
Focus:
Drafting organizations of this section: Suzhou Baosu Mining and Metallurgy Equipment Co:, Ltd:, Nanjing Shengqiang Rubber and Plastic Co:, Ltd:, Zhejiang Zhengrong Roll Co:, Ltd:,
Nanjing Gubai Rubber and Plastic Products Co:, Ltd:, Zhejiang Fuming Industrial Machinery Co:, Ltd:, Hengshui City Quality and Technical Supervision and Inspection Institute, Nanjing Dongrun Special
Rubber & Plastic Co:, Ltd:
The main drafters of this section: Jiao Jian, Lin Hongyun, Xu Jing, Zhang Shoucai, Wang Yiyu, Wang Heshan, Jiang Wenyang, He Linnan:
Determination of the hardness of vulcanized rubber or thermoplastic rubber
Part 6: IRHD method to determine the apparent hardness of rubber rollers
Warning 1---The personnel using this document should be familiar with general laboratory operations: This document is not intended to list all
Current security issues: The user should have the corresponding safety and hygiene experience, and comply with other application rules:
Warning 2-Some procedures specified in this document may involve the use or production of certain substances or the production of waste, which may be harmful to the local environment:
harmful: Reference should be made to the corresponding documents on safe handling and disposal after use:
1 Scope
This part of GB/T 39693 specifies the method for measuring the apparent hardness of rubber rollers (expressed in international rubber hardness):
This method is similar in principle to the method of measuring rubber hardness in ISO 48-2, and it is essentially measured by measuring a spherical indenter under a prescribed force:
The depth of the dent caused: The instrument used is similar to that described in ISO 48-2, with specially designed for roller surfaces and similar curved surfaces:
The base of the surface:
Note: For some rubber rollers, the surface rubber thickness may vary significantly, which may affect the measured apparent hardness:
2 Normative references
The following documents are indispensable for the application of this document: For dated reference documents, only the dated version applies to this article
Pieces: For undated references, the latest version (including all amendments) applies to this document:
ISO 48-2:2018 Determination of hardness of vulcanized rubber or thermoplastic rubber Part 2: Hardness between 10IRHD~100IRHD
(Rubber,vulcanizedorthermoplastic-Determinationofhardness-Part 2:Hardnessbetween
10IRHDand100IRHD)
ISO 23529 Rubber-General procedures for the preparation and adjustment of rubber physical test methods (Rubber-General proceduresforpre-
paringandconditioningtestpiecesforphysicaltestmethods)
3 Terms and definitions
There are no terms and definitions that need to be defined in this document:
The terminology database for standardization maintained by ISO and IEC is located at the following website:
---ISO online browsing platform: the available address is at https://www:iso:org/obp;
---IEC Electrotechnical Encyclopedia: The available address is at https://www:electropedia:org/:
4 Time interval between forming, grinding and testing
After molding and/or grinding, the parking time of the sample shall not be less than 16h; as the determination of arbitration, the parking time after molding shall not be less than
72h:
5 Test temperature and adjustment
As long as conditions permit, the determination should be carried out at the standard laboratory temperature specified in ISO 23529: To make the product and measure the ambient temperature
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