Rolling method of TC4 titanium alloy wide cut medium-thickness plates

A titanium alloy, wide-width technology, applied in the direction of metal rolling, metal rolling, rolling mill control devices, etc., can solve the problems of small anisotropy of thick plates, large plate anisotropy, and cannot meet the requirements of titanium alloys, etc., to achieve reduction Small anisotropy, small anisotropy effect

Active Publication Date: 2013-08-07
WESTERN METAL MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the current conventional methods fail to implement effective comprehensive control of the rolling process parameters, and the anisotropy of the final plate is large. Generally, the difference between the transverse and longitudinal strengths of the mechanical properties of titanium alloy medium and thick plates at room temperature can reach 70-100MPa
Therefore, the existing conventional rolling method can no longer meet the requirements of small anisotropy of titanium alloy medium and thick plates.

Method used

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  • Rolling method of TC4 titanium alloy wide cut medium-thickness plates

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Effect test

Embodiment 1

[0025] The rolling method of the present embodiment TC4 titanium alloy wide medium-thick plate comprises the following steps:

[0026] Step 1. Place a TC4 titanium alloy slab with a thickness of 150mm and a length and width of 1200mm in a roller hearth heating furnace, and heat it for 80 minutes at a temperature of 940°C for the first heat treatment;

[0027] Step 2. Send the TC4 titanium alloy slab after the first heat treatment in the step 1 into the 2800mm hot rolling mill along the length direction or the width direction for the first rolling to obtain a semi-finished slab with a thickness of 67.1mm and a width of 1200mm billet; the first rolling is one-way rolling, and the temperature of the TC4 titanium alloy slab is monitored by an infrared thermometer during the first rolling process, and the temperature of the TC4 titanium alloy slab is controlled to not be lower than 900°C , the specific process is: when the temperature of the TC4 titanium alloy slab drops to 905°C, ...

Embodiment 2

[0032] The rolling method of the present embodiment TC4 titanium alloy wide medium-thick plate comprises the following steps:

[0033] Step 1. Place a TC4 titanium alloy slab with a thickness of 80mm, a width of 800mm, and a length of 1200mm in a roller-hearth heating furnace, and heat it for 60 minutes at a temperature of 950°C for the first heat treatment;

[0034]Step 2, sending the TC4 titanium alloy slab after the first heat treatment in the step 1 into a 2800mm hot rolling mill along the length direction for the first rolling to obtain a semi-finished slab with a thickness of 20mm and a width of 800mm; The first rolling is one-way rolling, and an infrared thermometer is used to monitor the temperature of the TC4 titanium alloy slab during the first rolling process, and the temperature of the TC4 titanium alloy slab is controlled to not be lower than 900°C. The specific process It is: when the temperature of the TC4 titanium alloy slab drops to 910°C, the TC4 titanium all...

Embodiment 3

[0039] The rolling method of the present embodiment TC4 titanium alloy wide medium-thick plate comprises the following steps:

[0040] Step 1. Place a TC4 titanium alloy slab with a thickness of 120mm and a length and width of 800mm in a roller hearth heating furnace for the first heat treatment; the temperature of the first heat treatment is 930°C, and the first The time of heat treatment is 120min;

[0041] Step 2. Send the TC4 titanium alloy slab after the first heat treatment in step 1 into a 2800mm hot rolling mill along the length direction or width direction for the first rolling to obtain a semi-finished slab with a thickness of 49mm and a width of 800mm ; The first rolling is one-way rolling, and the temperature of the TC4 titanium alloy slab is monitored by an infrared thermometer during the first rolling process, and the temperature of the TC4 titanium alloy slab is controlled to be not lower than 900°C , the specific process is: when the temperature of the TC4 tit...

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Abstract

The invention provides a rolling method of TC4 titanium alloy wide cut medium-thickness plates. The rolling method includes the following steps: 1, first heating treatment is performed on TC4 titanium alloy plate blank with thickness ranging from 80mm to 150mm and length and width ranging from 800mm to 1200mm; 2, first rolling is performed on the TC4 titanium alloy plate blank to obtain semi-finished plate blank; 3, surface scale is removed after the semi-finished plate blank is sheared, and then second heating treatment is performed; and 4, second rolling is performed on the semi-finished plate blank to obtain TC4 titanium alloy wide cut medium-thickness plates with thickness ranging from 5mm to 30mm and width ranging from 1000mm to 2600mm. Through comprehensive control of rolling temperature, rolling heating number, heating number deformation and rolling directions, finally the TC4 titanium alloy wide cut medium-thickness plates with small anisotropism, high mechanical properties, strong plastic comprehensive matching are manufactured.

Description

technical field [0001] The invention belongs to the technical field of titanium alloy material preparation, and in particular relates to a rolling method of TC4 titanium alloy wide medium-thick plate. Background technique [0002] With the development of technology in aerospace, shipbuilding, petroleum, chemical and nuclear energy industries, higher quality requirements are put forward for TC4 titanium alloy (the nominal composition is Ti-6Al-4V) medium and thick plates, such as the requirement of plate anisotropy Small, specifically, the difference between the transverse and longitudinal strengths of the mechanical properties at room temperature is less than 40MPa. [0003] Since the main α phase of the TC4 titanium alloy is a close-packed hexagonal structure, it is inevitable to produce a preferred crystal orientation during processing, and then form a texture. Only by comprehensively controlling the rolling process parameters such as heating temperature, deformation amou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/38B21B37/74B21B37/28B21B37/68
Inventor 谢英杰付文杰舒滢张清周玉川王云吴晓东倪再鹏王兴王蕊宁文宁李辉杨建朝吕利强
Owner WESTERN METAL MATERIAL
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