GB/T 33216-2016 English PDF (GBT33216-2016)

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.

GB/T 33216-2016
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 ... 9
Foreword
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 Coefficient
1 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