GB/T 34358-2017 English PDF

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GB/T 34358-2017: Dimension measurement of hot free forgings and rolled rings
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 34358-2017	199	Add to Cart	3 days	Dimension measurement of hot free forgings and rolled rings	Valid

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Basic data

Standard ID: GB/T 34358-2017 (GB/T34358-2017)
Description (Translated English): Dimension measurement of hot free forgings and rolled rings
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J32
Classification of International Standard: 17.040
Word Count Estimation: 10,131
Date of Issue: 2017-10-14
Date of Implementation: 2018-05-01
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

GB/T 34358-2017: Dimension measurement of hot free forgings and rolled rings

---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.
Dimension measurement of hot free forgings and rolled rings ICS 17.040 J32 National Standards of People's Republic of China Free forgings, rolling ring thermal dimension measurement 2017-10-14 Published 2018-05-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard by the National Standardization Technical Committee forging (SAC/TC74) and focal point. This standard was drafted unit. Guizhou Aerospace Air Forging Co., Ltd., Beijing Institute of Electrical and Mechanical Services, Hubei Sanhuan Forging Co., Ltd., Ningbo Snail Forging Co., Ltd., Wuhan University of Technology, Shanxi Jinrui High-pressure Ring Co., Ltd. The main drafters of this standard. Wang Bin, Wei Zhijian, Jin Hong, Wei Wei, Li Zhaohui, Gan Wanbing, Wei Baijiang, Hualin, Peng Lan, Jiang Ruihua, Ye Junqing, Chen Zuxiang, Yu Guolin, Wu Zhonglin, Li Shengshi, continued construction, Han Xinghui, Chen Peng, Zhou Lin, Chen Wenjing. Free forgings, rolling ring thermal dimension measurement

1 Scope

This standard specifies the free forging, rolling ring (hereinafter referred to as "forgings") theory of the use of thermal dimensions, calculation formula and its application, heat Measurement of state size. This standard applies to forgings thermal dimension measurement.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 4339 metallic materials - Determination of thermal expansion characteristic parameters GB/T 8541 forging terminology GB 13318 forging production safety and environmental protection General

3 Terms and definitions

GB/T 8541 defined and the following terms and definitions apply to this document. 3.1 Rolled ring roledrings Metal ring formed by the use of rolling ring forgings. 3.2 Forgings thermal dimension dimensionofhotforgings Generally refers to the forging temperature in the final forging temperature of the size. 3.3 Forgings Cold Dimensions dimensionofcoldforgings Forgings temperature at room temperature when the size. 4 Theoretical hot state size of the use, calculation formula and its application 4.1 uses Forgings Theoretical thermal dimensions are as follows. a) direct the actual production process operation to control the forging hot size, to ensure forgings cold size in line with the requirements of the process file; b) Guide forgings for the production of mold cavity size design. 4.2 Calculation formula 4.2.1 Engineering applications, the theoretical thermal state of forgings according to equation (1) calculation. Lt = L0 [1 α × (t-20)] (1) ......

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