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Method for heating large titanium and titanium alloy slabs

A heating method and technology for titanium alloys are applied in the field of heating large titanium slabs of titanium and titanium alloys, which can solve the problems of slow heating speed, short service life, heat resistance, etc. The effect of service life

Inactive Publication Date: 2012-07-25
WESTERN TITANIUM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the atmosphere in the furnace of the electric heating method is controllable, the temperature uniformity is good, and the pollution is less, but the heating speed is slow and the production efficiency is low; the gas heating method, the atmosphere in the furnace is not easy to control, the heating speed is fast, and the temperature uniformity is poor. serious pollution
[0005] 2) Heating by induction heating furnace, the degree of pollution is small, the heating speed is fast, but the temperature uniformity is poor
Cast iron trays are not wear-resistant, not heat-resistant, easy to deform during use, and have a short service life. The tray made of Co20 has a longer service life, but its cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] To heat the TA2 titanium slab with a thickness of 200mm, a width of 1200mm, and a length of 1700mm, a stainless steel-carbon steel-stainless steel composite backing plate with a thickness ratio of 4 and a specification of 50×1600×2400mm is used. The specific heating process is as follows:

[0026] 1) Transfer the composite backing plate to the furnace door of the pusher type heating furnace, evenly distribute 4 angle steels with a height of 50mm on the composite backing plate, and then place the titanium slab on the angle steel;

[0027] 2) Push the composite backing plate and the titanium slab together into a pusher-type heating furnace with a pusher, preheat at 600-650°C for 40 minutes, heat up to 840-860°C for 140 minutes, and then hold at 840-860°C for 80 minutes ;

[0028] 3) After the heating is completed, the titanium slab leaves the heating furnace and is separated from the composite backing plate on the close-packed roller table in front of the rolling mill, an...

Embodiment 2

[0031] To heat the TA2 titanium slab with a thickness of 180mm, a width of 1100mm, and a length of 1500mm, a stainless steel-carbon steel-stainless steel composite backing plate with a thickness ratio of 6 and a specification of 50×1600×2400mm is used. The specific heating process is as follows:

[0032] 1) Transfer the composite backing plate to the furnace door of the pusher type heating furnace, evenly distribute 6 angle steels with a height of 70mm on the composite backing plate, and then place the titanium slab on the angle steel;

[0033] 2) Push the composite backing plate and the titanium slab together into a pusher-type heating furnace with a pusher, preheat at 750-800°C for 60 minutes, heat up to 940-960°C for 100 minutes, and then hold at 940-960°C for 40 minutes;

[0034] 3) After the heating is completed, the titanium slab leaves the heating furnace and is separated from the composite backing plate on the close-packed roller table in front of the rolling mill, and ...

Embodiment 3

[0037] To heat the TC4 titanium slab with a thickness of 240mm, a width of 1000mm, and a length of 1500mm, a stainless steel-carbon steel-stainless steel composite backing plate with a thickness ratio of 5 and a specification of 50×1600×2400mm is used. The specific heating process is as follows:

[0038] 1) Transfer the composite backing plate to the furnace door of the pusher type heating furnace, evenly distribute 8 angle steels with a height of 70mm on the composite backing plate, and then place the titanium slab on the angle steel;

[0039] 2) Push the composite backing plate and the titanium slab together into a pusher-type heating furnace with a pusher, preheat at 700-750°C for 50 minutes, heat up to 860-900°C for 120 minutes, and then hold at 860-900°C for 60 minutes ;

[0040] 3) After the heating is completed, the titanium slab leaves the heating furnace and is separated from the composite backing plate on the close-packed roller table in front of the rolling mill, an...

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PUM

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Abstract

The invention discloses a method for heating large titanium and titanium alloy slabs. The method comprises the following steps of: allocating and transporting a composite base plate to a furnace door of a pusher-type heating furnace, arranging angle iron on the composite base plate, and arranging the titanium slabs on the angle iron, wherein the composite base plate is a composite plate compounded by a carbon steel plate serving as a middle base material and stainless steel plates serving as upper and lower sheathing materials through explosion; and pushing the composite base plate and the titanium slabs together into the pusher-type heating furnace by using a pusher, heating, and separating. The stainless steel-carbon steel-stainless steel composite base plate is used as a base plate forheating the titanium slabs to effectively prevent scratches on the surfaces of the slabs in the heating process; the angle iron prevents the slabs from directly contacting the base plate so as not tocause nonuniform heating of the slabs; and the service life of the base plate is not shortened and the manufacturing cost of the base plate is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of titanium and titanium alloy processing, in particular to a method for heating titanium and titanium alloy large titanium slabs based on a pusher type heating furnace. Background technique [0002] Due to their high specific strength, excellent corrosion resistance and good biocompatibility, titanium and titanium alloys are widely used in aerospace, petrochemical, pharmaceutical, salt, metallurgy and medical industries, and are known as all-round metals. The application prospects of titanium and titanium alloy plates are very broad, and the trend is promising. With the development of the aviation industry at home and abroad, the use of titanium and titanium alloys on large transport aircraft continues to expand, especially the demand for large-scale titanium plates is also increasing. Therefore, the research, development and application of large-scale titanium plate thermal processing technology is becomi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/18
Inventor 陈钧伟王瑞琴范晗刘宇张鹏张晓卫吕利强李辉马宏旺张清
Owner WESTERN TITANIUM TECH