GB/T 39697.2-2020 English PDF

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GB/T 39697.2-2020: Rubber or plastics covered rollers - Specifications - Part 2: Surface characteristics
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 39697.2-2020	174	Add to Cart	3 days	Rubber or plastics covered rollers - Specifications - Part 2: Surface characteristics	Valid

Similar standards

GB/T 36363   GB/T 20786   GB 18241.1   GB/T 39693.8   GB/T 39693.7   GB/T 39697.1   

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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