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

A kind of forging processing method of tc4 titanium alloy large size bar

A processing method and technology of titanium alloys, applied in metal processing equipment, manufacturing tools, forging/pressing/hammer devices, etc., can solve the problems of uneven structure and performance, difficult deformation of titanium alloys, high investment costs, and achieve depreciation of fixed assets. Reduce, shorten the production cycle, shorten the effect of the process flow

Inactive Publication Date: 2016-08-17
宁夏中色金航钛业有限公司
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to produce Φ400mm large rods, some units added 4,500 tons of fast forging machines, but the number of fires is also between 11 and 13, and the production cost is still high.
[0005] Generally speaking, titanium alloy is a difficult-to-deform and difficult-to-machine material, especially the TC4 large-scale bar used in aerospace structural parts, which has the problem of uneven structure and performance
In order to solve this problem, larger size ingots (such as Φ700~Φ950mm 4 ton to 8 ton ingots), large forging presses (2500 ton to 3150 ton fast forging machines) and increased forging fire times (8 ~13 fire times) and other measures to achieve, but the investment cost is high, the process is long, and the technology is complicated

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
  • A kind of forging processing method of tc4 titanium alloy large size bar
  • A kind of forging processing method of tc4 titanium alloy large size bar
  • A kind of forging processing method of tc4 titanium alloy large size bar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] In this embodiment, a 1600-ton fast forging machine is used to process TC4 titanium alloy rods with a diameter of 600 mm (the ingot is a cylinder and a length of 1200 mm) as raw materials to process TC4 titanium alloy rods of Φ215 mm×3000 mm. The processing method is as follows:

[0039] Step 1: Preheat a TC4 titanium alloy ingot with a diameter of 600mm at 820°C for 1 hour, then heat it at 1150°C for 4 hours, and use a 1,600-ton fast forging machine for billet forging. The ratio is 1.7, the total forging ratio is 2.8, the final forging temperature is 900°C, after forging, chop and cut into thirds, and then use water cooling;

[0040] Step 2: Preheat the billet forged in step 1 at 820°C for 1 hour, then heat and hold it at 1050°C for 3 hours, use a 1600-ton fast forging machine to start forging above the phase transition point, upsetting times 2 times, each upsetting ratio 1.7, the total forging ratio is 2.8, the full anvil is used for feeding when drawing, the final fo...

Embodiment 2

[0045] In this embodiment, a 1,600-ton fast forging machine is used to process a TC4 titanium alloy bar with a diameter of 600mm×780mm as a raw material to process a TC4 titanium alloy bar with a diameter of 600mm×780mm. The processing method is as follows:

[0046] Step 1: Preheat a TC4 titanium alloy ingot with a diameter of about 600mm at 820°C for 2 hours, then heat and hold at 1170°C for 6 hours, use a 1600-ton fast forging machine for blank forging, upsetting times 3 times, each upsetting The drawing and forging ratio is about 1.7, the total forging ratio is about 4.6, the final forging temperature is 900°C, and water cooling is used after forging;

[0047] Step 2: Preheat the billet forged in step 1 at 820°C for 2 hours, then heat and hold at 1050°C for 4 hours, use a 1600-ton fast forging machine for forging, upsetting and drawing times are 3 times, and the upsetting and drawing ratio of the first two times is about 1.7. The third drawing length forging ratio is about ...

Embodiment 3

[0052] In this embodiment, a TC4 titanium alloy ingot with a diameter of 600 mm is used as a raw material to process a TC4 titanium alloy rod with a diameter of Φ300 mm×2000 mm. The processing method is as follows:

[0053] Step 1: Preheat a TC4 titanium alloy ingot with a diameter of about 600mm×1100mm at 820°C for 1 hour, then heat and hold it at 1170°C for 5 hours, and use a 1600-ton fast forging machine for billet forging. Upsetting times are 3 times, each The first upsetting and drawing ratio is about 1.7, the total forging ratio is about 4.6, the final forging temperature is 900°C, and water cooling is used after forging;

[0054] Step 2: Preheat the blank forged in step 1 at 820°C for 1 hour, then heat and hold at 1100°C for 4 hours, use a 1600-ton fast forging machine for intermediate forging above the phase transition point, upsetting times 4 times, each upsetting ratio Not about 1.7, the total forging ratio is about 7.8, the full anvil is used to feed when drawing, t...

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

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to bar material forging machining method of titanium alloy, particularly to a forging machining method of large-sized bar materials of TC4 (Ti-6Al-4V) titanium alloy. The forging machining method is characterized by comprising the following steps of step 1, performing cogging forging, step 2, performing intermediate forging above a phase transformation point, step 3, performing intermediate forging below the phase transformation point, step 4 and step 5, performing finished product forging and obtaining the phi 200 to 300 mm and 2000 to 3000 mm length of large-sized bar materials of the TC4 titanium alloy finally. Compared with the prior art, a large-sized ingot casting and a large-tonnage forging device are not required and the industrialized production can be achieved through an ordinary industrial 3 ton ingot and a small-tonnage forging press and the equipment investment is small, only a 3 tons of electric arc furnace and a 3000 tons of forming oil press which is matched with the electric arc furnace need to be invested in the phi 600 of 3 ton ingot, the small-tonnage forging press such as a 1600 tons of forging press needs to be invested in the forging process, and accordingly the equipment investment is significantly reduced.

Description

technical field [0001] The invention relates to a forging processing method of a titanium alloy rod, in particular to a forging processing method of a TC4 titanium alloy large-size rod. Background technique [0002] Titanium alloy has the advantages of light weight, high specific strength, excellent high temperature performance, and strong corrosion resistance. It is an important material used in aviation, aerospace, weapons, ships and other fields. The aerospace industry is the main field of high-end application of titanium alloys, and the alloy grade with the largest amount of titanium alloys is TC4 (Ti-6Al-4V) medium-strength two-phase titanium alloy, accounting for about 70% of the output of titanium alloys, mainly used in aircraft structures parts etc. With the development of the aviation industry, in order to improve the safety and reliability of the aircraft, prolong the service life, and improve the structural efficiency, the design and development trend of the airc...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B21J5/00B21J13/06
Inventor 薛长荣朱宝辉胡晓晨刘彦昌马超沈立华王益王莉赵玉林
Owner 宁夏中色金航钛业有限公司
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