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Method for producing titanium strip by adopting conventional hot continuous rolling machine set

A technology of hot continuous rolling and titanium strip, applied in metal rolling, tension/pressure control, roll speed control, etc., can solve the problems of coil weight limitation and high production cost, improve quality, reduce production cost, and advanced control system Effect

Inactive Publication Date: 2010-08-25
SHANDONG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention uses a CSP production line to produce titanium coils. The thickness specifications and coil weight are limited to a certain extent, and the blank needs to be finished by two fires, so the production cost is relatively high.

Method used

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  • Method for producing titanium strip by adopting conventional hot continuous rolling machine set

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The 180*1000*8000mm titanium billet is heated to 800-900°C and released from the furnace. It is transported to the four-roll reversible roughing mill at a speed of about 1.5m / s through the roller table and the roller table before rough rolling. Rolling is carried out in 5 passes. The 30mm thick intermediate slab is formed for the first time, and the rolling speed is 1.2-4m / s. After the roller table is sent to the flying shear to remove the irregular part of the head, it enters the 6-stand finishing rolling unit for rolling, and the finishing rolling temperature is 750~ 850°C.

[0027] There are 5 sets of hydraulic looper devices (namely H1~H5) between the stands of the finishing rolling mill. The height adjustment system makes the rolling mill automatically adjust the speed, and through the tension adjustment system, the titanium strip is rolled under the state of slight tension and constant tension. The tension is set at 4-8MPa, and the titanium strip of 4.5*1000mm is ...

Embodiment 2

[0029] Others are the same as in Example 1, the difference is that the raw material size is 240*1200*10000mm, the finished product size is 20*1200mm, the thickness of the intermediate billet is 50mm, the titanium billet is heated to 800-850°C and released, and the rolling speed of the roughing mill is 1.2-3m / s, the finish rolling start temperature is 750~800℃. The tension of the finish rolling unit is set at 6-8MPa, and the titanium strip of the required size is rolled; the final rolling temperature is 650-700°C, and the rolling speed is 3m / s; the finished titanium strip is transported to the horizontal coil through the layer cooling roller table The take-up machine coils into coils, the coil weight is 5-15 tons, the coiling temperature is 550-600 ℃, and the coiling tension is 5-8MPa.

Embodiment 3

[0031] Others are the same as in Example 1, the difference is that the raw material size is 160*1000*11000mm, the finished product size is 3*1000mm, the finished titanium billet is heated to 850-900°C and released, the rolling speed of the rough rolling mill is 2-4m / s, the finishing The rolling start temperature is 750-800°C. The tension of the finish rolling unit is set at 5-8MPa, and the titanium strip of the required size is rolled; the final rolling temperature is 650-700°C, and the rolling speed is 8m / s; the finished titanium strip is transported to the horizontal coil through the layer cooling roller table The take-up machine coils into coils, the coil weight is 5-15 tons, the coiling temperature is 550-580 ℃, and the coiling tension is 8-10 MPa.

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Abstract

The invention discloses a method for producing a titanium strip by adopting a conventional hot continuous rolling machine set, wherein the method comprises the following steps: heating a titanium plate blank with the thickness of 150 to 250mm to the temperature of 800 to 900 DEG C in a walking beam type heating furnace, manufacturing the titanium strip with the thickness of 2.5 to 20mm through five passes of rough rolling and continuous rolling of six stands, and coiling into a strip coil through a coiler, wherein the finishing temperature is larger than 650 DEG C, the coiling temperature is larger than 550 DEG C, and the coil weight is 5 to 15 tons. Producing the titanium strip through the conventional hot continuous rolling machine set belongs to domestic initiation and has great economic and social benefits.

Description

technical field [0001] The invention relates to a method for producing titanium strips by using a conventional hot continuous rolling mill, and belongs to the technical field of nonferrous metal hot rolling. Background technique [0002] Pure titanium is a low-temperature α-Ti lattice. The performance of titanium is related to the content of impurities such as carbon, nitrogen, hydrogen, and oxygen. The purest titanium iodide has an impurity content of no more than 0.1%, but its strength is low and its plasticity is high. The performance of 99.5% industrial pure titanium is: density ρ=4.5g / cm 3 , melting point is 1680°C, thermal conductivity λ=15.24W / (m.K), tensile strength σb=539MPa, elongation δ=25%, reduction of area ψ=25%, elastic modulus E=1.078×105MPa, hardness HB195. Compared with steel, titanium is prone to scratches and has strict requirements on surface quality. [0003] Titanium strips are mainly used in aviation, nuclear power, thermal power, chemical industry...

Claims

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Application Information

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IPC IPC(8): B21B1/26B21B37/48B21B37/74B21B37/46
Inventor 汤化胜张桂南邵浩刘莱萌刘洪成孙正旭孙丽荣任继银周平王洪彬张明金尹燕春王腾飞尹翠兰杨旭孙建卫
Owner SHANDONG IRON & STEEL CO LTD
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