A method for improving the yield of titanium alloy wire

A technology of yield and titanium alloy, which is applied in the field of improving the yield of titanium alloy wire, can solve the problems of serious surface oxidation, rough surface, and low yield, so as to reduce the number of annealing passes, eliminate scratches, and reduce pickling processes Effect

Active Publication Date: 2021-11-26
CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for improving the yield of titanium alloy wires in order to overcome the problems of scratches, rough surfaces, severe surface oxidation and low yield of titanium alloy wires produced in the prior art. When preparing titanium alloy wire rods, wire drawing powder is not used as a lubricant, which reduces the pickling process. At the same time, roller dies are used for diameter reduction instead of fixed dies, which effectively eliminates scratches on the wire rod surface and ensures the smoothness of the surface.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] This example is used to illustrate the preparation method of the finished Φ2mm TA1 wire.

[0043] A. Use the straightening device equipped at the entrance of the swaging machine to adjust the Φ8mm wire rod after hot rolling until the straightness is less than 10mm / m, and then get stuck at the entrance of the swaging machine;

[0044] B. Use a rotary forging machine to reduce the diameter of the Φ8mm wire to Φ6mm, Φ4.5mm, Φ3.4mm, Φ2.6mm and Φ2mm in turn;

[0045] C. In the diameter reduction process described in step B, when the diameters of the wire rods are Φ6mm, Φ4.5mm, Φ3.4mm and Φ2.6mm, the vacuum annealing furnace is used for annealing at 600°C, and the furnace is cooled after holding for 1 hour , where the ultimate vacuum degree of the vacuum annealing furnace is 3x10 -2 Pa, the boost rate is less than 5Pa / h;

[0046] D. During the reducing process described in step B, use DTE46 anti-wear hydraulic oil to lubricate and cool the wire rod.

[0047] The obtained f...

Embodiment 2

[0049] This example is used to illustrate the preparation method of the finished Φ2mm TB14 wire.

[0050] A. Use the straightening device equipped at the entrance of the swaging machine to adjust the Φ8mm wire rod after hot rolling until the straightness is less than 9mm / m, and then get stuck at the entrance of the swaging machine;

[0051] B. Use a rotary forging machine to reduce the diameter of the Φ8mm wire to Φ6mm, Φ4.5mm, Φ3.4mm, Φ2.6mm and Φ2mm in turn;

[0052] C. In the diameter reduction process described in step B, when the diameters of the wire rods are Φ6mm, Φ4.5mm, Φ3.4mm and Φ2.6mm, the vacuum annealing furnace is used for annealing at 830°C, and the furnace is cooled after holding for 1 hour , where the ultimate vacuum of the vacuum annealing furnace is 3.2x10 -2 Pa, the boost rate is less than 4Pa / h;

[0053] D. During the reducing process described in step B, use DTE46 anti-wear hydraulic oil to lubricate and cool the wire rod.

[0054] The obtained finish...

Embodiment 3

[0056] The finished product Φ2mm TA1 wire was prepared according to the method of Example 1. The difference was that in step C, annealing treatment was performed in a vacuum annealing furnace at 550° C., and the temperature was kept for 1.5 hours and then cooled with the furnace. The obtained finished TA1 wire with a diameter of 2 mm has a smooth surface without defects such as scratches and pits.

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PUM

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Abstract

The invention relates to the technical field of titanium alloy wire preparation, and discloses a method for improving the yield of titanium alloy wire. The method includes: A. Straightening the Φ7.8‑8.2mm wire rod and clamping it at the entrance of the swaging machine; B. Using a swaging machine to reduce the diameter of the Φ7.8‑8.2mm wire rod to Φ1.8‑2.2mm ; C. During the diameter reduction process, when the wire diameters are Φ5.8-6.2mm, Φ4.3-4.7mm, Φ3.2-3.6mm and Φ2.4-2.8mm, the vacuum annealing furnace is used for annealing; D , During the reducing process, use anti-wear hydraulic oil to lubricate and cool the wire. The method does not use wire-drawing powder as a lubricant, reduces the pickling process, uses a roller die to reduce the diameter, eliminates scratches on the surface of the wire rod, and ensures the smoothness of the surface. At the same time, through cold working during the diameter reduction process, problems such as serious surface oxidation of the material are avoided, and the yield of the material is greatly improved.

Description

technical field [0001] The invention relates to the technical field of titanium alloy wire preparation, in particular to a method for improving the yield of titanium alloy wire. Background technique [0002] Titanium alloy has been widely used in aerospace and energy fields because of its high specific strength, good oxidation resistance and thermal corrosion resistance. Since titanium alloys are more expensive than aluminum alloys, the processing costs of titanium alloy products and the yield of finished products have a direct impact on prices during the mass promotion of titanium alloys. [0003] At present, titanium alloy wire rods are manufactured through vacuum consumable furnaces for multiple times of smelting, billeting, hot rolling, and peeling to about Φ8.0mm~Φ12.0mm wire rods. Its follow-up processing generally adopts fixed die hot drawing for diameter reduction drawing, or directly passes through fixed die under the action of dry powder lubrication for cold drawi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C37/04C21D1/26
CPCB21C37/047C21D1/26
Inventor 申学良唐新新冯兆龙王泽龙
Owner CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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