Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Forging method of TC4 titanium alloy large-specification rods

A large-scale, titanium alloy technology, applied in the direction of metal processing equipment, etc., can solve the problems of forging billet cracking, difficult process, and increased cost, so as to increase the degree of material deformation, improve the uniformity of the structure, and reduce material loss. Effect

Active Publication Date: 2018-06-01
西安赛特思迈钛业有限公司
View PDF6 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual implementation of this process, the forging billet will be severely cracked and the loss will be large; the operation is complicated and the process is difficult; Unstable; many fires, grinding in the middle, long production cycle, increased cost and many other problems

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Forging method of TC4 titanium alloy large-specification rods
  • Forging method of TC4 titanium alloy large-specification rods
  • Forging method of TC4 titanium alloy large-specification rods

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: TC4 (Ti-6Al-4V) alloy Φ620-2800Kg cast ingot deformed Φ120mm rod forging method: 3500T forging press is selected as the forging equipment.

[0034] For the first fire, the ingot is opened. Heating temperature 1100-1150°C, heat preservation 300-360min, elongation deformation: Φ620→□350 (that is, forging an ingot with a diameter of 620mm into a square billet with a side length of 350 in cross section), divided into 7 equal parts, and the weight of a single forging is 400Kg , about 720mm in length, ground after air cooling.

[0035] For the second fire, the heating temperature is 1020-1050°C, and the heat preservation time is 180-210min. First do deep heading in the x direction to a thickness of 250mm (the amount of deformation is about 65%), and then do the reversing elongation deformation in the y direction. Grind after air cooling.

[0036] For the third fire, the heating temperature is 980-1000°C, and the heat preservation time is 180-210min. First do de...

Embodiment 2

[0040] Example 2: TC4 (Ti-6Al-4V) alloy Φ460-1100Kg cast ingot deformed Φ120mm bar forging method: 3500T forging press is selected as the forging equipment.

[0041] For the first fire, the ingot is opened. Heating temperature 1100-1150°C, heat preservation 240-300min, elongation deformation: Φ460→□300 (that is, forging an ingot with a diameter of 460mm into a square billet with a cross-sectional side length of 300). Divided into 4 equal pieces, the weight of a single forging is 275Kg, the length is about 680mm, and it is ground after air cooling.

[0042] For the second fire, the heating temperature is 1020-1050°C, and the heat preservation is 150-180min. First do deep heading in the x direction to a thickness of 230mm (the amount of deformation is about 66%), and then do the reversing elongation deformation in the y direction. Grind after air cooling.

[0043] For the third fire, the heating temperature is 980-1000°C, and the heat preservation time is 150-180min. First do ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a forging method of TC4 titanium alloy large-specification rods. TC4 cast ingots are selected; TC4 are drawn to deform according to a deformation of 40-60%, and are broken to obtain multiple forgings; second heating-number forging and third heating-number forging are performed on each forging; one-upsetting and one-drawing deformation is performed on each forging in secondheating-number forging and third heating-number forging; fourth heating-number forging is performed on each forging; one-upsetting and one-drawing deformation is performed; the forgings are rounded asrods of phi 200-phi 220 mm; fifth heating-number forging is performed on each rod of phi 200-phi 220 mm; and the rods are drawn to deform according to a deformation of 40-60%, and are rounded to formrods of phi 120 mm. The one-upsetting and one-drawing operation is adopted to replace traditional three-upsetting and three-drawing operation, so that the operation is simplified, the production costand the material loss are reduced, the material deformation degree is increased, the heart structures can be crushed more sufficiently, and the equiaxial property is achieved; and the blank forging temperature is gradually lowered along with the operation, crushing of grain particles and transformation of morphologies are facilitated, and the structure uniformity of the TC4 alloy large-specification rods is improved.

Description

【Technical field】 [0001] The invention belongs to the technical field of titanium material processing, and in particular relates to a forging method for large-scale rods of TC4 titanium alloys. 【Background technique】 [0002] Titanium is widely used in engineering technology fields such as aviation, navigation, chemical industry, electronics, and medical treatment due to its excellent specific strength, wear resistance, and corrosion resistance. Among them, large-scale structural parts and large-scale medical surgical implants require large-scale rods in the range of Φ40-Φ100mm. [0003] TC4 (Ti-6Al-4V) titanium alloy is a typical two-phase titanium alloy. Due to different thermal processing processes, many microstructures with various morphologies will be formed. For bars in the range of Φ40-Φ100mm, uniformly distributed equiaxed structures are required to obtain good comprehensive mechanical properties. In the production process specification, the structure of TC4 alloy ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B21J1/00B21J1/06B21J5/08B21J5/00
CPCB21J1/00B21J1/06B21J5/00B21J5/08
Inventor 毛江虹崔文俊杨晓康杨宏进罗斌莉金旭丹
Owner 西安赛特思迈钛业有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com