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Method for manufacturing titanium and titanium alloy bars by means of hot continuous rolling

A titanium alloy, hot continuous rolling technology, applied in the direction of metal rolling, to achieve the effect of high precision and high quality, strong controllability and uniform structure

Active Publication Date: 2014-11-19
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, the above hot continuous rolling rod production line is mainly used to produce steel rods. Due to the special physical and chemical properties of titanium and titanium alloys, the method of using traditional hot continuous rolling mills to produce titanium and titanium alloy rods has not been reported.

Method used

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  • Method for manufacturing titanium and titanium alloy bars by means of hot continuous rolling
  • Method for manufacturing titanium and titanium alloy bars by means of hot continuous rolling
  • Method for manufacturing titanium and titanium alloy bars by means of hot continuous rolling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] Using the above-mentioned hot continuous rolling production line to produce Φ16.0mm titanium alloy rods, the main steps and parameters are as follows:

[0092] a. Heating: keep a forged billet of titanium alloy with a size of 150×150×12000mm at a heating temperature of 900°C for 2 hours;

[0093] b. Rough rolling: rough rolling the heated forged billet, the rolling speed is 0.7m / s, rolling 4 passes, the pass elongation coefficient is 1.2, and the final rolling temperature is controlled at 850°C;

[0094] c. Intermediate rolling: after rough rolling, cut the head of the rolled piece by 50-100mm, then perform intermediate rolling, the rolling speed is 1.2m / s, rolling 6 passes, the elongation coefficient of each pass is 1.3; the final rolling temperature is controlled at 820°C ;

[0095] d. Finish rolling: after the intermediate rolling, the rolled piece is cut to 50-100mm and rolled at a rolling speed of 4.1m / s, rolling 6 times, and the elongation coefficient of each pas...

Embodiment 2～ Embodiment 5

[0099] According to the steps of Example 1, the process parameters are changed to obtain Φ30.0mm pure titanium rods, Φ50.0mm titanium alloy rods, Φ80.0mm titanium alloy rods and Φ90.0mm pure titanium rods. Table 4 lists Φ16 .0mm titanium alloy rod, Φ30.0mm pure titanium rod, Φ50.0mm titanium alloy rod, Φ80.0mm titanium alloy rod and Φ90.0mm pure titanium rod specific production process parameters.

[0100] The titanium rod products produced in Examples 1 to 5 all conform to the diameter, cross-sectional thickness and size tolerance of titanium and titanium alloy rods specified in the GB / T2965-2007 standard.

[0101] Table 4 Specific process parameters of bars with different specifications

[0102]

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Abstract

The invention relates to a method for manufacturing titanium and titanium alloy bars by means of hot continuous rolling, and belongs to the technical field of plastic machining for metal. The method is applicable to manufacturing the titanium and titanium alloy bars on the traditional hot continuous rolling unit for steel. The method for manufacturing the titanium and titanium alloy bars by means of hot continuous rolling includes controlling heating cycles, blooming temperatures, rolling speeds and hole patterns; performing shearing, cooling and bundling processes; primarily heating and discharging titanium and titanium alloy square billets out of furnaces; then rolling the titanium and titanium alloy square billets to obtain the bars with the sizes ranging from phi16mm to phi100mm. The method for manufacturing the titanium and titanium alloy bars by means of hot continuous rolling has the advantage that titanium and titanium alloy bar products which are good in surface quality and roundness and uniform in structure property can be quickly and efficiently manufactured on the traditional hot continuous rolling unit for the steel by the aid of the method.

Description

technical field [0001] The invention relates to a method for producing titanium and titanium alloy rods by continuous hot rolling, and belongs to the technical field of metal plastic processing. Background technique [0002] With the development of metallurgical technology, electric transmission and control technology, and mechanical manufacturing technology, high-speed wire rod mills have also developed rapidly, and have become the most mature rod and wire rod rolling equipment. It is characterized by high speed, single wire, no twist, micro tension, combined structure, tungsten carbide roller ring and automation. Its products are characterized by large disk, high precision, high efficiency and good quality. [0003] Titanium and titanium alloys are important structural metals, they have low density, high specific strength, high temperature resistance, low temperature resistance, acid and alkali corrosion resistance, non-magnetic, small linear expansion coefficient, good d...

Claims

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Application Information

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IPC IPC(8): B21B1/16
Inventor 卢东李军王晓波王怀柳孙慎宏赵兵王莹肖聪彭琳
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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