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GB/T 39697.2-2020: Rubber or plastics covered rollers - Specifications - Part 2: Surface characteristics
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 39697.2-2020 | English | 174 |
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Rubber or plastics covered rollers - Specifications - Part 2: Surface characteristics
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GB/T 39697.2-2020
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Basic data | Standard ID | GB/T 39697.2-2020 (GB/T39697.2-2020) | | Description (Translated English) | Rubber or plastics covered rollers - Specifications - Part 2: Surface characteristics | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G47 | | Classification of International Standard | 83.140.99 | | Word Count Estimation | 9,981 | | Date of Issue | 2020-12-14 | | Date of Implementation | 2021-11-01 | | Quoted Standard | ISO 3274; ISO 4288; ISO 23529 | | Adopted Standard | ISO 6123-2-2015, 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 classification of rubber or plastic coated rollers (hereinafter referred to as coated rollers) according to surface quality (or defects) and surface treatment, and describes the measurement method of surface roughness. | GB/T 39697.2-2020: Rubber or plastics covered rollers - Specifications - Part 2: Surface characteristics
---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.
(Rubber or plastic coated rollers Specification Part 2: Surface characteristics)
ICS 83:140:99
G47
National Standards of People's Republic of China
Specification for rubber or plastic coated rollers
Part 2: Surface characteristics
(ISO 6123-2:2015, IDT)
2020-12-14 release
2021-11-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Foreword
GB/T 39697 "Rubber or plastic coated roller specifications" is divided into 3 parts:
---Part 1: Hardness requirements;
---Part 2: Surface characteristics;
---Part 3: Dimensional tolerance:
This part is Part 2 of GB/T 39697:
This section was drafted in accordance with the rules given in GB/T 1:1-2009:
The translation method used in this section is equivalent to ISO 6123-2:2015 "Rubber or Plastic Covered Roll Specification Part 2: Surface Characteristics":
The Chinese documents that have a consistent correspondence with the international documents cited in this section are as follows:
---GB/T 6062-2009 Product Geometric Technical Specification (GPS) Surface structure contour method contact (stylus) type instrument standard
Characteristic (ISO 3274:1996, IDT);
---GB/T 10610-2009 Product Geometric Technical Specification (GPS) Surface structure profile method to evaluate the rules of surface structure
And methods (ISO 4288:1996, IDT):
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: Guangzhou Derun Rubber Products Co:, Ltd:, Zhejiang Zhengrong Roll Co:, Ltd:, Hebei Tongchang Rubber Roll Co:, Ltd:, He
Beichunfeng Yinxing Rubber Roller Co:, Ltd:, Nanjing Dongrun Special Rubber and Plastic Co:, Ltd:, Nanjing Gubai Rubber and Plastic Products Co:, Ltd:
The main drafters of this section: Zeng Zhaoyu, Xu Jing, Li Guoshui, Sun Hongliang, Jiang Wenyang, Zhang Shoucai:
Introduction
Rubber or plastic coated rollers are usually made of cylindrical metal roller cores covered with rubber or plastic, and can be made into various
Size and hardness level:
Specification for rubber or plastic coated rollers
Part 2: Surface characteristics
1 Scope
This part of GB/T 39697 stipulates that rubber or plastic coated rollers (hereinafter referred to as coated rollers) are based on surface quality (or defects) and surface
It also describes the method for measuring surface roughness:
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 3274 Product Geometric Technical Specification (GPS) Surface Structure: Nominal Characteristics of Profile Method Contact (Stylus) Instruments
[GeometricalProductSpecifications(GPS)-Surfacetexture:Profilemethod-Nominalcharacteristicsof
contact(stylus)instruments]
ISO 4288 Product Geometric Technical Specification (GPS) Surface Structure: Rules and Methods for Evaluating Surface Structure by Profile Method [Geomet-
ricalProductSpecifications(GPS)-Surfacetexture:Profilemethod-Rulesandproceduresforthe
assessmentofsurfacetexture]
ISO 23529 Rubber-General procedures for the preparation and adjustment of rubber physical test methods
preparingandconditioningtestpiecesforphysicaltestmethods)
3 Terms and definitions
The following terms and definitions apply to this document:
3:1
Arithmeticalmeandeviationoftheprofile
Ra
The arithmetic mean deviation of the contour refers to the arithmetic mean of the absolute value of the contour deviation within the sampling length (l):
Ra=
l∫
0 yx() dx or approximately Ra≈
n∑
i=1
yi
Where:
n---The number of discrete contour offsets:
Note: In practice, the value of Ra is determined within the evaluation length, which includes several sampling lengths: According to ISO 3274, the nominal sampling length
The value is equal to the cutoff wavelength:
3:2
Ten-point height of microscopic irregularities tenpointheightofirregularities
Rz
The ten-point height of microscopic unevenness refers to the average of the 5 largest profile peak heights and the average of the 5 largest profile valley depths within the sampling length
The sum of values:
Rz= ∑
i=1
ypi ∑
i=1
yvi()/5
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