Titanium-based alloy material spinning forming method based on composite heating

A titanium-based alloy, spinning forming technology, applied in the direction of forming tools, metal processing equipment, manufacturing tools, etc., can solve the problems of heat source distribution, titanium-based alloy spinning area mold holding, titanium-based alloy material instability and wrinkling, forming temperature Narrow intervals and other issues can be achieved to improve mold life, improve deformation coordination, and achieve the effects of high temperature control accuracy

Active Publication Date: 2019-01-01
HARBIN INST OF TECH
View PDF6 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some titanium-based alloy materials, such as titanium alloys, Ti 2 The forming temperature range of AlNb alloys is narrow. In order to ensure the forming quality, the requirements for the deformation temperature range and temperature uniformity are very strict.
However, the flame heating method has disadvantages such as large fluctuations in heating temperature, low heating precision, and low heating efficiency, which lead to defects such as instability, wrinkling, cracking, and uneven wall thickness of titanium-based alloy materials during the spinning forming process.
In addition, in the spinning process, the unreasonable distribution of the heat source of the flame heating will lead to problems such as die-holding in the spinning area of ​​the titanium-based alloy.

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
  • Titanium-based alloy material spinning forming method based on composite heating
  • Titanium-based alloy material spinning forming method based on composite heating
  • Titanium-based alloy material spinning forming method based on composite heating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Billet is Ti 2 AlNb alloy cylindrical billet, the initial wall thickness of the billet is 6.0mm.

[0052] (1) Put Ti 2 The AlNb alloy cylindrical blank is set on the mandrel of the spinning machine and fixed; the blank, mandrel and rotary wheel of the spinning machine are preheated with a flame gun; the spinning mandrel is heated to 450°C, and the rotary wheel is heated to 200°C. The billet is heated to 500°C;

[0053] The flame gun adopts oxygen-propane flame; the steel used for the rotary wheel of the spinning machine is H13 hot work die steel, and the spinning mandrel is made of K403 cast superalloy; Ti 2 There is a transition fit between the AlNb alloy blank and the spinning mandrel.

[0054] (2) The follow-up electromagnetic induction coil is fixed on the rotating wheel bracket, and will move along the axial direction with the rotating wheel; the follow-up induction heating coil is sleeved on the Ti 2 Outside the AlNb alloy billet, there is a gap between it and...

Embodiment 2

[0060] Other conditions are the same as in Example 1, and only after step (3) is completed, steps (1) to (3) are repeated again, and the spinning is repeated 2 times, the total pass thinning rate is about 58%, and the wall thickness of the formed part is 2.5mm.

[0061] Observing the formed part, it can be seen that the wall thickness of the formed part is uniform and there is no cracking defect.

Embodiment 3

[0063] The titanium-based alloy billet is a low-plasticity Ti55 high-temperature titanium alloy material, and the billet is a cylindrical billet with an initial wall thickness of 10.0 mm.

[0064] (1) Put the cylindrical blank of Ti55 alloy material on the mandrel of the spinning machine and fix it; use a flame gun to preheat the mandrel, wheel and blank of the spinning machine, heat the spinning mandrel to 450°C, and turn the wheel Heating to 250°C, the titanium-based alloy blank is preheated to 500°C.

[0065] The flame gun adopts oxygen-acetylene flame; the steel used for the spinning wheel of the spinning machine is W18Cr4V high-speed steel, and the spinning mandrel is made of H13 hot work die steel; the transition fit between the Ti55 alloy billet and the spinning mandrel.

[0066] (2) Start the spinning machine so that the mandrel rotates, and the Ti55 alloy billet rotates together with the spinning mandrel. The follower electromagnetic induction coil is fixed on the ro...

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 provides a titanium-based alloy material spinning forming method based on composite heating. The titanium-based alloy material spinning forming method comprises the steps that firstly, ablank, a central spindle and a spinning roller are preheated with a flame gun; and secondly, the blank is heated to the spinning temperature with a follow-up induction heating coil, the temperature is monitored with an infrared thermal imager in the spinning process, and heating and heat preserving are conducted on the blank in a spun area behind the spinning roller with the flame gun. Accordingto the titanium-based alloy material spinning forming method based on composite heating, two heating modes including front-end electromagnetic induction heat source heating and back-end flame source heat compensating are combined, the temperature is monitored with the infrared thermal imager, and then online heating and precise temperature controlling in the spinning forming process are achieved.Embodiment results show that when spinning forming is conducted on a titanium-based alloy through the method, an obtained spun part is uniform in wall thickness, has no cracking phenomenon, is high inquality and can not generate defects such as instability wrinkling in the spinning process.

Description

technical field [0001] The invention relates to the technical field of plastic forming of titanium-based alloy materials, in particular to a spinning forming method of titanium-based alloy materials based on composite heating. Background technique [0002] The density of titanium-based alloy is only about 60% of that of steel, and it has excellent characteristics such as high strength, good corrosion resistance, wide temperature range, non-magnetic, high toughness, and good weldability. It is a new type of lightweight high-performance Structural materials. Therefore, titanium-based alloys have broad application prospects in the fields of aviation, aerospace, weapons, chemical industry, metallurgy, medical treatment, seawater desalination, offshore oil exploitation, and daily necessities. [0003] However, the difficult machining of titanium alloys limits its wide application. Spinning forming is an advanced manufacturing technology for thin-walled rotary parts without cutt...

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 Applications(China)
IPC IPC(8): B21D22/16B21D37/16
CPCB21D22/16B21D37/16
Inventor 徐文臣单德彬杨中泽王思冰陈宇杨川
Owner HARBIN INST OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap