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Structure-uniformity forging method of large-sized TC4 alloy ring component

A technology with uniform structure and alloy rings, applied in metal rolling, metal processing equipment, etc., can solve the problems of affecting the mechanical properties of finished products, low material utilization rate, uneven structure, etc., to improve material utilization rate and fully uniform material deformation , The effect of improving the utilization rate of materials

Inactive Publication Date: 2018-12-25
GUIZHOU ANDA AVIATION FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large size of the blank of the large TC4 alloy ring, uneven structure and coarse grains often appear inside the material, which affects the mechanical properties of the finished product
In addition, in order to ensure the performance and size requirements of TC4 alloy rings, the stock margin is often large, which makes the utilization rate of materials low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] Implementing the large-scale TC4 alloy ring structure uniformity forging method described in the present invention needs to provide forging heating furnace, press, ring rolling machine, manipulator and other equipment.

[0014] The steps of this method are as follows:

[0015] Step 1. Heating the TC4 titanium alloy billet with a circular cross section to the process temperature and keeping it warm, and then performing two-upsetting and two-drawing forging, wherein the holding time of the heat preservation is t 1 = heating coefficient η 1 ×δ 1 ,δ 1 Be the cross-sectional diameter of described TC4 titanium alloy billet, unit is mm, heating coefficient η 1 =0.6~1.0, holding time t 1 The unit is min; the deformation of each upsetting during the two-upsetting and two-drawing forging process is 40% to 60%, the final forging temperature of the two-upsetting and two-drawing forging is not lower than 800°C, and the The TC4 titanium alloy blank returns to its original height...

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Abstract

The invention discloses a structure-uniformity forging method of a large-sized TC4 alloy ring component. The structure-uniformity forging method is characterized by comprising the following steps: 1,heating a TC4 titanium alloy blank to the technological temperature, preserving heat, and performing two-heading and two-drawing forging; 2, heating the TC4 titanium alloy blank to the technological temperature, preserving the heat, and upsetting and punching to obtain a TC4 titanium alloy ring blank; 3, heating the TC4 titanium alloy ring blank to the technological temperature, preserving the heat, and then reaming; 4, heating the TC4 titanium alloy ring blank to the technological temperature, preserving the heat, and then rolling; 5, heating the TC4 titanium alloy ring blank to the technological temperature, preserving the heat, shaping and then performing air cooling; 6, annealing the TC4 titanium alloy ring blank. The large-sized TC4 alloy ring component prepared by the structure-uniformity forging method consists of an alpha equiaxed structure and a beta transformation structure and has a uniform and small microstructure. The structure-uniformity forging method is applicable to moulding of titanium alloy ring components in the fields of aviation, aerospace, industrial machinery and the like.

Description

technical field [0001] The invention relates to a method for forging a TC4 alloy ring, in particular to a method for forging a large TC4 alloy ring with uniform structure. Background technique [0002] TC4 titanium alloy has excellent comprehensive properties and is the most widely used two-phase titanium alloy. The ring materials prepared from it are also widely used in aircraft structural parts, and the required ring size is gradually increasing. Titanium alloy rings are usually first forged to obtain a billet, which is then rolled through a ring rolling mill. Due to the large size of the billet of the large TC4 alloy ring, uneven structure and coarse grains often appear inside the material, which affects the mechanical properties of the finished product. In addition, in order to ensure the performance and size requirements of TC4 alloy rings, a large margin of blanks is often invested, which makes the utilization rate of materials low. Contents of the invention [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/00B21H1/06C22F1/18
CPCB21J5/002B21H1/06C22F1/183
Inventor 田丰郑永灵潘俊杰
Owner GUIZHOU ANDA AVIATION FORGING