GB/T 33216-2016 PDF English
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GB/T 33216-2016: Steel Open Die Forgings on Hammer - Classification of Complexity and Equivalent Coefficient
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NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 77.140.85 J 32 Steel Open Die Forgings on Hammer - Classification of Complexity and Equivalent Coefficient ISSUED ON: DECEMBER 13, 2016 IMPLEMENTED ON: JULY 1, 2017 Issued by: General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 3 1 Scope ... 4 2 Classification of Complexity for Steel Open Die Forgings on Hammer ... 4 3 Equivalent Coefficient ... 9Foreword
This Standard was drafted in accordance with the rules in GB/T 1.1-2009. This Standard was proposed by and shall be under the jurisdiction of National Technical Committee 74 on Forging of Standardization Administration of China (SAC/TC 74). The drafting organizations of this Standard: First Design and Research Institute MI China Co., Ltd., Lanzhou Lanshi Group Co., Ltd., Beijing Research Institute of Mechanical & Electrical Technology, Hubei Tri-ring Forging Co., Ltd. The main drafters of this Standard: Xuqiang, Cui Shuangbin, Wen Tiejun, Zhang Yunjun, Zhoulin, Yangwu, Weiwei, Chen Tianfu, Wang Bingzheng, Chen Wenjing, Huang Mingwei. Steel Open Die Forgings on Hammer - Classification of Complexity and Equivalent Coefficient1 Scope
This Standard stipulates the classification of complexity and equivalent coefficient for steel open die forgings on hammer. This Standard is applicable to general-purpose carbon-steel and structural alloy-steel open die forgings (including tire die forgings) on hammer. This Standard may be considered as a basis for the statistics of the standard production volume of forgings, and the formulation of production quota and energy consumption. In addition, it may also be considered as a reference for enterprises in the formulation of sale price.2 Classification of Complexity for Steel Open Die
Forgings on Hammer In this Standard, steel open die forgings are classified into 9 types in accordance with the complexity of forging shapes, as it is shown in Table 1.3 Equivalent Coefficient
The nominal equivalent coefficient of each type of forgings shall comply with the stipulations in Table 2. In this Standard, Type-VII forgings are taken as the benchmark (nominal equivalent coefficient Zm = 1), which is corrected in accordance with the following circumstances: a) Correct in accordance with Table 3 and the tonnage of equipment used in forging production; b) Correct in accordance with Table 4 and the batch of forgings; c) In terms of forging billet which are pre-forged through hot die forging, determine the type in accordance with the shape, then, lower to an inferior type for calculation (for example, lower Type-I to Type-II, and so forth). However, if it belongs to Type-IX, it shall still be calculated as Type-IX; d) Correct in accordance with Table 5 and the grade of steel used for the forgings. Table 2 -- Table of Nominal Equivalent Coefficient (Zm) Table 3 -- Table of Equipment Tonnage Correction Factor (X1) Table 4 -- Table of Forging Batch Correction Factor (X2) Type of Forgings Nominal Equivalent Coefficient Zm Correction Factor X1 Mass of Forging Hammer Dropping Part/t Correction Factor X2 Forging Batch/PCS ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
