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GB/T 38964-2020: Isothermal forging for titanium-alloy--Technological specification
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 38964-2020 | English | 189 |
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Isothermal forging for titanium-alloy--Technological specification
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GB/T 38964-2020
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Basic data | Standard ID | GB/T 38964-2020 (GB/T38964-2020) | | Description (Translated English) | Isothermal forging for titanium-alloy--Technological specification | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J32 | | Classification of International Standard | 77.120.50 | | Word Count Estimation | 10,143 | | Date of Issue | 2020-07-21 | | Date of Implementation | 2021-02-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 38964-2020: Isothermal forging for titanium-alloy--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.
Isothermal forging for titanium-alloy--Technological specification
ICS 77.120.50
J32
National Standards of People's Republic of China
Titanium alloy isothermal forging process specification
2020-07-21 released
2021-02-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Table of contents
Foreword Ⅰ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 General 2
5 Requirements 3
6 Process 4
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed and managed by the National Forging Standardization Technical Committee (SAC/TC74).
Drafting organizations of this standard. Guizhou Anda Aviation Forging Co., Ltd., YTO (Luoyang) Casting and Forging Co., Ltd., Beijing Electromechanical Research Institute
Co., Ltd., Hubei Sanhuan Forging Co., Ltd., Wuhan University of Technology, First Tractor Co., Ltd.
The main drafters of this standard. Chen Zuxiang, Chen Ming, Wang Yunfei, Wei Wei, Jin Hong, Zhang Yunjun, Hua Lin, Wang Longxiang, Yu Yiluo, Zhou Lin, Wang Guowen,
Qian Dongsheng, Ruan Yanjing, Qin Sixiao, Yu Guolin, Liu Yanxiong, Li Shengshi.
Titanium alloy isothermal forging process specification
1 Scope
This standard specifies the process specifications for titanium alloy isothermal forgings (hereinafter referred to as "forgings"), including general rules, requirements, and process.
This standard applies to the formulation of titanium alloy isothermal forging process.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB/T 2965 Titanium and titanium alloy bars
GB/T 8541 Forging terminology
GB/T 9452-2012 Method for measuring effective heating area of heat treatment furnace
GB/T 16598 Titanium and titanium alloy cakes and rings
GB/T 23605 Titanium alloy β transformation temperature measurement method
3 Terms and definitions
The following terms and definitions defined in GB/T 8541 apply to this document.
3.1
Titanium alloy α β forging α β forgingoftitanium-aloy
Titanium alloys are forged after heating at 20°C~50°C below the β transformation temperature (Tβ), that is, conventional two-phase zone forging to obtain a dual-state structure or
Isometric organization.
3.2
Titanium alloy near β forging near β forging of titanium-aloy
Titanium alloys are forged after heating at 10°C~20°C below the beta transition temperature (Tβ), and the primary alpha phase content is usually 15%~
30% dual-state organization.
3.3
Titanium alloy quasi β forging of titanium-aloy
The titanium alloy is preheated at 10℃ below the β transformation temperature (Tβ) and then heated with the furnace to 30℃ above the β transformation temperature (Tβ), and then heated for a short time.
Forging is performed to obtain a net basket organization or two-state organization with a primary α-phase content of not more than 15%.
3.4
Titanium alloy β forging β forgingoftitanium-aloy
Titanium alloys are forged after heating in the β zone at 10°C or higher above the β transformation temperature (Tβ), and the primary α phase content is usually obtained
Not more than 15% net basket organization or sheet organization.
3.5
Isothermal forging of titanium-aloy
During the titanium alloy die forging process, the blank temperature is kept constant forging method. Under normal circumstances, the mold temperature is the temperature of the forged workpiece
95%~100% of the pressure, the pressure holding time is usually 60s~900s.
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