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Reversible hot-rolling process of titanium plate coil

A titanium plate and process technology, which is applied in the field of hot rolling process for manufacturing titanium plate and coil, can solve the problems of high production capacity of continuous casting and rolling process, uneven flatness of extension deformation, etc., and achieve improvement of surface quality and mechanical properties, and production automation degree and high productivity effect

Inactive Publication Date: 2010-01-20
WUKUN STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the continuous casting and rolling process and corresponding equipment are used in this patent application, so the heat preservation of the thinner titanium slab during the rolling process is a problem that needs attention, and the thinner titanium slab is stretched and deformed at low temperature Flatness problems caused by unevenness are inevitable
In addition, the production capacity of the continuous casting and rolling process is too high. It is necessary to pay more for the production of small batches of titanium plates in the middle of the normal production of several thousand tons to more than 10,000 tons.

Method used

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  • Reversible hot-rolling process of titanium plate coil

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0032] Put a titanium slab with a specification of 123mm×1290mm×6347mm (thickness×width×length) into the heating furnace, heat it at a heating rate of 0.75mm / min, the furnace temperature is 880°C, the rolling start temperature is 843°C, and the final rolling The temperature is 521°C, and the rolling target thickness is 3.8mm. The distribution of rolling force, speed and reduction of each pass is calculated by the model calculation module as follows:

[0033] pass

[0034] After 14 passes of rolling, the actual thickness of the finished product is 3.74-3.81mm, the average thickness is 3.77mm, which is close to the target thickness of 3.8mm, the width is 1283-1298mm, the average width is 1288mm, and the surface quality reaches the corresponding standard.

example 2

[0036] A titanium slab with a size of 135mm×1285mm×6413mm (thickness×width×length) is loaded into a walking beam heating furnace, heated at a heating rate of 0.77mm / min, the furnace temperature is 900°C, and the rolling temperature is 880°C ℃, the final rolling temperature is 695 ℃, and the rolling target thickness is 3.2mm. The distribution of rolling force, speed and reduction of each pass is calculated by the model calculation module as follows:

[0037] pass

[0038] After 14 passes of rolling, the thickness of the finished product is 3.13-3.25mm, with an average thickness of 3.19mm, which is close to the target thickness of 3.2mm. The average width is 1279mm, and the flatness and surface quality are good, meeting the corresponding standards.

example 3

[0040] Put a titanium slab with a specification of 117mm×1005mm×5227mm (thickness×width×length) into the heating furnace, heat it at a heating rate of 0.55mm / min, the furnace temperature is 880°C, the starting rolling temperature is 860°C, and the final rolling The temperature is 689°C, and the rolling target thickness is 3.5mm. The distribution of rolling force, speed and reduction of each pass is calculated by the model calculation module as follows:

[0041] pass

[0042] After 14 passes of rolling, the thickness of the finished product is 3.41-3.56mm, the average thickness is 3.46mm, which is close to the target thickness of 3.5mm, and the average width is 1013mm. The flatness and surface quality are good, reaching the corresponding standards.

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Abstract

The invention provides a hot-rolling process for manufacturing a titanium plate coil, which comprises the following steps: heating titanium plate blank to tapping temperature; automatically generating process parameters for rolling the titanium plate blank by using a model computation module according to known parameters and predetermined target parameters; repeatedly rolling the titanium plate blank by a steckel mill according to the process parameters, wherein the titanium plate blank has the opening rolling temperature of 800 DEG C to 950 DEG C and the finishing rolling temperature of 500 DEG C to 695 DEG C; and coiling rolled titanium plate strips by using a coiler so as to produce the titanium plate coil.

Description

technical field [0001] The invention belongs to the technical field of metal pressure processing, in particular, the invention relates to a hot rolling process for manufacturing titanium coils. Background technique [0002] Because the surface of titanium is easy to oxidize or combine with impurity elements such as oxygen, nitrogen, carbon, iron, silicon to form a pollution layer when it is heated and rolled at high temperature in the air, and it is easy to produce cracks, coarse microstructure and surface pollution layer during rolling. Quality problems such as difficult to remove require special heating and rolling temperatures. Titanium also has the characteristics of low thermal conductivity, high yield ratio, and fast hardening at low temperature, which increases the difficulty of production of hot-rolled titanium coils. Nowadays, two-roll mills or four-roll mills are often used to produce single hot-rolled titanium plates. Adopting this technology cannot produce tita...

Claims

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Application Information

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IPC IPC(8): B21B1/38B21C47/02
Inventor 王钧洪史亚鸣杨奇陈育生曹占元杨豪黄远凤尹丽琼陈伟崔茂祥
Owner WUKUN STEEL
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