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Spinning process of large-curved tank bottom - Technological specification
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Basic data
| Standard ID | GB/T 44920-2024 (GB/T44920-2024) |
| Description (Translated English) | Spinning process of large-curved tank bottom - Technological specification |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | J32 |
| Classification of International Standard | 25.020 |
| Word Count Estimation | 14,141 |
| Date of Issue | 2024-11-28 |
| Date of Implementation | 2025-06-01 |
| Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration |
GB/T 44920-2024: Spinning process of large-curved tank bottom - Technological specification
---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.
Spinning process of large-curved tank bottom - Technological specification
Specification for Spinning Process of Large Curved Box Bottom
Spinning process of large-curved tank bottom-
Technological specification
ICS 25.020
CCS J 32
National Standard of the People's Republic of China
Released on 2024-11-28
2025-06-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface ... Ⅲ
1 Scope ... 1
2 Normative references ... 1
3 Terms and Definitions ... 1
4 Equipment requirements ... 2
5 Rough Design ... 2
6 Tooling Design ... 3
7 Process ... 5
8 Inspection and Recording ... 8
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting is required.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document is proposed and coordinated by the National Forging Standardization Technical Committee (SAC/TC 74).
This document was drafted by. Northwestern Polytechnical University, Sichuan Aerospace Long March Equipment Manufacturing Co., Ltd., China Machinery Engineering Academy Group Beijing Electromechanical Research Institute
Institute Co., Ltd., Beijing Institute of Aerospace Systems Engineering, Shanghai Institute of Aerospace Precision Machinery, Xi'an Aerospace Power Machinery Co., Ltd.,
Chengdu Aerospace Changzheng Machinery Co., Ltd., Xi'an Bosai Spinning Technology Co., Ltd., Sichuan Air Separation Equipment (Group) Co., Ltd.,
Guangdong Bosai CNC Machine Tool Co., Ltd. and Lanzhou Lanshi Heavy Equipment Co., Ltd.
The main drafters of this document are. Zhan Mei, Gao Pengfei, Ma Fei, Wang Zili, Ma Qianqian, Wang Jinglin, Liu Debo, Zhao Tao, Yang Yantao, Liu Xi,
Zhou Lu, Xiao Duohai, Fan Zuojun, Luo Yongzhi, Fan Xiaoguang, Lv Jianmin, Li Jiaying, Yang Zihan, Wu Kaiqi, Cao Xuewen, Wu Jinchen, Han Bingchao,
Su Weijie, Ma Yumei, and Zhu Xiaokun.
Specification for Spinning Process of Large Curved Box Bottom
1 Scope
This document specifies the spinning process specifications for large curved box bottoms, including equipment requirements, blank design, tooling design, process,
Inspection and record keeping.
This document is applicable to the rotation of aluminum alloy curved bottom parts with a diameter of φ1 500 mm~φ5 000 mm and a wall thickness of 3 mm~60 mm.
Press forming and spinning forming of conical parts (with zero generatrix curvature) shall be carried out in accordance with this document.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies.
in this document.
GB/T 8541 Forging Terminology
GB/T 11345 Ultrasonic testing technology, testing levels and assessment for non-destructive testing of welds
3 Terms and definitions
The terms and definitions defined in GB/T 8541 and the following apply to this document.
3.1
Half cone angle
The angle (α) between the tangent line of the generatrix of the spun part and the axis.
Note. The half cone angle is a variable value, see Figure 1.
...
