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GB/T 31703-2015 English PDF

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GB/T 31703-2015: Ceramic ball bearings -- Silicon nitride balls
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
GB/T 31703-2015	English	209	Add to Cart	3 days [Need to translate]	Ceramic ball bearings -- Silicon nitride balls	Valid	GB/T 31703-2015

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Basic data

Standard ID	GB/T 31703-2015 (GB/T31703-2015)
Description (Translated English)	Ceramic ball bearings -- Silicon nitride balls
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	Q32
Classification of International Standard	81.060.30
Word Count Estimation	10,190
Date of Issue	2015-06-02
Date of Implementation	2016-05-01
Quoted Standard	GB/T 308.2; GB/T 6569; GB/T 10610; GB/T 10700; GB/T 16534; GB/T 16535; GB/T 22315; GB/T 23806; GB/T 25995; JB/T 1255
Adopted Standard	ISO 26602-2009, NEQ
Regulation (derived from)	National Standard Announcement 2015 No.19
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This Standard specifies the terms and definitions of silicon nitride balls, size and grade, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage. This Standard applies to the silicon nitride balls in an atmosphere of pressure sintering.

GB/T 31703-2015: Ceramic ball bearings -- Silicon nitride balls

---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.
Ceramic ball bearings. Silicon nitride balls ICS 81.060.30 Q32 National Standards of People's Republic of China Silicon nitride ceramic ball bearings ball [ISO 26602.2009, Fineceramics (advancedceramics, advancedtechnical ceramics) -Siliconnitridematerialforrolingbearingbals, NEQ] Issued on. 2015-06-02 2016-05-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. The standard reference method using redrafted ISO 26602.2009 "Fine ceramics (advanced ceramics, advanced technical ceramics) Rolling balls Silicon nitride material "to develop, and ISO 26602.2009 is not equivalent degree of consistency. The standard proposed by China Building Materials Federation. This standard by the National Ceramic Industry Standardization Technical Committee (SAC/TC194) centralized. This standard was drafted. Beijing Sinoma Synthetic Crystals Research Institute Limited. The main drafters. Zhang Weiru, Chang, Wang Fang Xiang, Ding Yan, Kang Huajun, Zoujing Liang, Xu Peng. Silicon nitride ceramic ball bearings ball

1 Scope

This standard specifies the terms and definitions of silicon nitride balls, and grade specifications, technical requirements, test methods, inspection rules, marking, packaging, transport Transport and storage. This standard applies to atmospheric pressure sintering silicon nitride balls prepared.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 308.2 Rolling Ball - Part 2. Ceramic balls GB/T 6569 fine ceramic bending strength test method GB/T 10610 Geometrical product specifications (GPS) Surface texture Profile method - Rules and procedures for evaluation of the surface structure GB/T 10700 Fine Ceramics Elastic Modulus Test Method for bending method GB/T 16534 Test method for hardness of fine ceramics at room temperature GB/T 16535 Fine Ceramics linear thermal expansion coefficient Test Method jack method GB/T 22315 metallic material elastic modulus and Poisson's ratio test method GB/T 23806 Test method for fracture toughness of fine ceramics unilateral pre-cracked beam (SEPB) method GB/T 25995 Fine Ceramics density and apparent porosity test methods JB/T 1255 Rolling carbon chromium bearing steel parts heat treatment technology conditions

3 Terms and Definitions

GB/T 308.2 as defined in the following terms and definitions apply to this document. 3.1 Crushing load than crackloadratio Crushing load value with the same specifications GCr15 steel balls than the standard value of the crushing load of silicon nitride balls. 3.2 Rough ball preprocessedbal After sintering raw silicon nitride balls. 3.3 Precision ball finebal After processing, the size has a precision silicon nitride balls. 3.4 Inclusion inclusion Silicon nitride balls uneven performance of the local area in phase and the microstructure.

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