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GB/T 45786-2025Extrusion forming specifications of titanium and titanium alloy electrodes (English PDF)

钛及钛合金自耗电极挤压成形规范

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

May 30, 2025

Implementation date

September 1, 2025

Scope

GB/T 45786-2025 is the English-translated version of 钛及钛合金自耗电极挤压成形规范.

GB/T 45786-2025 is the Chinese national standard covering pressing titanium sponge, revert and alloy additions into the consumable electrode that a vacuum arc furnace later melts — the press, container and die that make up the tooling, the raw material requirements, the material head preparation and the extrusion sequence, the unit extrusion pressure and the other extrusion parameters, the operating rules, the inspection and the records, and the storage. Whatever the electrode carries into the furnace ends up in the ingot. First edition, in force from 1 September 2025. Issued on 30 May 2025, it has been in force since 1 September 2025.

Document preview — GB/T 45786-2025

National Standard of the People's Republic of China

ICS: 25.120.20
Classification: J 62

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

PrefaceIII
1 Scope1
2 Normative references1
3 Terms and Definitions1
4 Process equipment components2
5 Raw material requirements3
6 Extrusion process3
7 Operational Requirements6
8 Inspection and Recording7
9 Storage7
Figure 1 Schematic diagram of titanium and titanium alloy consumable electrode extrusion process equipment Figure 2 General process flow of electrode extrusion4
Figure 3 Schematic diagram of the process of preparing the material head4
Figure 4 Schematic diagram of titanium and titanium alloy consumable electrode extrusion forming5
Table 1 Basic parameters of electrode extrusion5
Table 2 Typical specifications of extrusion process parameters6

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.

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 Technical Committee for Metallurgical Equipment Standardization (SAC/TC409).

This document was drafted by: China Heavy Machinery Research Institute Co., Ltd., Northwestern Polytechnical University, Xi'an Jiaotong University, Yanshan University, Xi'an Sai Tesma Titanium Co., Ltd., Baoji Titanium Co., Ltd., Northwest Institute of Nonferrous Metals, Xi'an University of Technology, Huazhong University of Science and Technology, Beijing Hangxing Machinery Manufacturing Co., Ltd., Taiyuan University of Technology, and Hexing Aviation Materials (Tianjin) Technology Co., Ltd.

The main drafters of this document are: Qiu Lipeng, Wu Liang, Qiu Mingjun, Hu Yanghu, Li Lei, Quan Xiaohui, Zhang Libo, Li Heng, Hong Jun, Lin Qiyin, Yao Jing, Yang Weizhu, Sun Shouyi, Yang Xiaokang, Wang Zhelin, Zhang Jun, Gao Pengchang, Chen Xi, Wu Yali, Zhang Dawei, Xia Weisheng, Jing Yunhai, Kou Peng, He Maolin, Wu Honggang, Dong Xiaojuan, Wang Xu, Sun Feng, Ren Zhongkai, Wang Shenglong, Ma Haikuan, Feng Lianqiang, Dong Dong, Liu Yaxing, Li Zhengli, Ma Yongjun, Guo Yongan, Ren Jinyu.

Specification for extrusion forming of titanium and titanium alloy consumable electrodes

1 Scope

This document specifies the process equipment composition, raw material requirements, extrusion process, operation requirements, inspection and testing of titanium and titanium alloy consumable electrodes extrusion forming. Check, record and store.

This document applies to the extrusion forming of titanium and titanium alloy consumable electrodes.

2 Normative references

GB/T 2524-2019

GB/T 8541

3 Terms and definitions

The terms and definitions defined in GB/T 8541 and the following apply to this document.

3.1 Rod material composed of materials

For use in the vacuum consumable arc melting process (VAR) to melt titanium and titanium alloy ingots, with titanium sponge, titanium material return and alloy addition

3.2 Extrusion

The blank is subjected to three-dimensional non-uniform compressive stress in the closed mold cavity and is extruded from the orifice or gap of the mold, which reduces its cross-sectional area and becomes The processing method of the desired product.

[Source. GB/T 8541-2012, 3.1.22]

3.3 Unit extrusion pressure

The pressure per unit area of the extrusion rod (extrusion punch).

[Source. GB/T 8541-2012, 8.20.1]

3.4 Extrusion container

A container that holds the extruded blank during the extrusion process.

3.5 Remainder

At the end of extrusion, there is no blank extruded out of the die.

[Source. GB/T 8541-2012, 8.23, modified]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

Editions of GB/T 45786

Edition	Title	Revision	Status
GB/T 45786-2025	Extrusion forming specifications of titanium and titanium alloy electrodes	current edition	Current

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