Warm straightening method for pure titanium plate and low-strength titanium alloy plate

A titanium alloy plate, warm straightening technology, applied in the direction of metal processing equipment, forming tools, feeding devices, etc., can solve the problems of time-consuming and labor-intensive straightening process, uneven titanium plate, few straightening passes, etc., and achieve low efficiency , strong applicability, and the effect of improving production efficiency

Inactive Publication Date: 2018-11-16
LUOYANG SUNRUI TI PRECISION CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a warm straightening method for pure titanium and low-strength titanium alloy plates in order to solve the problems of performance deterioration after straightening of existing low-strength titanium alloy plates and the time-consuming and labor-intensive straightening process. Titanium plates do not need to be cooled to room temperature after single sheet annealing. Taking advantage of the fact that the plate has a certain residual temperature yield strength lower than the room temperature yield strength after annealing, it directly enters the straightening machine for straightening, which has high straightening efficiency and low labor intensity. Less times, low-strength titanium alloy plates can be used to achieve short process, high efficiency, and low cost straightening of pure titanium and low-strength titanium alloy plates, and the unevenness of titanium plates after straightening can meet the requirements

Method used

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  • Warm straightening method for pure titanium plate and low-strength titanium alloy plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Warm straightening of 6mm TA1 pure titanium plate according to the following process parameters:

[0020] Determine the straightening temperature T corresponding to the titanium alloy plate according to the 6mm TA1 pure titanium plate 0 100~500℃, the annealing temperature T corresponding to the titanium alloy plate to be straightened 1 700~780℃, the annealing and holding time t is 35~50min, and calculate the speed V of the titanium alloy plate to be straightened into the annealing furnace 1 , V 1 =0.2~1m / min, at the same time determine the distance between two adjacent titanium alloy plates to be straightened as L 间 , L 间 =1m, V 3 =1~3m / min through the connecting roller table at the same time with V 3 =1~3m / min Automatic unloading through the exit roller table of the straightener;

[0021] Then pre-heat the roller hearth heating furnace to 700~780°C, and the 6*1030~1280*2500~5500mm TA1 pure titanium plate enters the roller bottom through the roller hearth annealin...

Embodiment 2

[0023] Temperature straightening of 4~10mm Ti70 titanium alloy plate according to the following process parameters:

[0024] Determine the straightening temperature T corresponding to the titanium alloy plate according to the 4~10mm Ti70 titanium alloy plate 0 ≥300℃, the annealing temperature T corresponding to the titanium alloy plate to be straightened 1 600~750℃, the annealing heat preservation time t is 30~55min, and calculate the speed V of the titanium alloy plate to be straightened into the annealing furnace 1 , V 1 =0.2~1m / min, at the same time determine the distance between two adjacent titanium alloy plates to be straightened as L 间 , L 间 =0.5~1m, V 3 =3m / min through the connecting roller table at the same time with V 3 =3m / min automatic unloading through the exit roller table of the straightener;

[0025] Pre-heat the roller hearth heating furnace to 600~750℃, and the Ti70 titanium alloy plate with a size of 4~10*800~1250*2000~4000mm passes through the roller he...

Embodiment 3

[0027] Warm straightening of 4~10mm TA5 titanium alloy plate according to the following process parameters:

[0028] Determine the straightening temperature T corresponding to the titanium alloy plate according to the 4~10mm TA5 titanium alloy plate 0 ≥300℃, the annealing temperature T corresponding to the titanium alloy plate to be straightened 1 600~700℃, the annealing and holding time t is 30~55min, and calculate the speed V of the titanium alloy plate to be straightened into the annealing furnace 1 , V 1 =0.2~1m / min, at the same time determine the distance between two adjacent titanium alloy plates to be straightened as L 间 , L 间 =0.5~1m, V 3 =3m / min through the connecting roller table at the same time with V 3 =3m / min automatic unloading through the exit roller table of the straightener;

[0029] Pre-heat the roller hearth heating furnace to 600~700℃, and the TA5 titanium alloy plate with a size of 4~10*800~1250*2000~4000mm passes through the roller hearth annealing...

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Abstract

The invention discloses a warm straightening method for a pure titanium plate and a low-strength titanium alloy plate. According to the warm straightening method, the plates are discharged out of a furnace, and then undergo rapid warm straightening, the defects of middle waves which stretch across the plates in the width direction and provided with the relatively large curvature, warped heads andsmall edge waves obtained after annealing are obviously eliminated, and the problems that the plate cold straightening efficiency is low and the plate straightening effect is poor are solved.

Description

technical field [0001] The invention belongs to the field of nonferrous metal processing, in particular to a warm straightening method for titanium alloy plates. Background technique [0002] Titanium and titanium alloy plates are widely used in chemical industry, electric power, shipbuilding, electronics, aviation, aerospace and other fields. In addition to special requirements for mechanical properties and surface conditions, plate roughness for different purposes is also an important acceptance index. In order to meet Different products have different requirements for unevenness, and it is necessary to eliminate the bending, wave shape, distortion and other poor shape of the plate during the rolling, heat treatment and other processing processes through the straightening process. [0003] Titanium and titanium alloy plates have high strength, small elastic modulus, and large rebound. Compared with other metals, straightening and shaping are more difficult. The pure titan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D1/02B21D37/16B21D43/08C22F1/18
CPCB21D1/02B21D37/16B21D43/08C22F1/183
Inventor 张强郝晓博柴自毫李渤渤任战锋李洋
Owner LUOYANG SUNRUI TI PRECISION CASTING
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