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Preparing method for Ti45Nb alloy disc circular wire

A technology of alloy disk and round wire, which is applied in the field of preparation of Ti45Nb alloy disk and round wire, can solve the problems of low dimensional accuracy control level and poor surface quality, and achieves fine and uniform horizontal and vertical structure, stable performance and obvious vertical streamline. Effect

Active Publication Date: 2017-10-24
西部超导材料科技股份有限公司
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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 preparing Ti45Nb alloy coiled wire, which solves the problems of low dimensional accuracy control level and poor surface quality in the existing Ti45Nb wire preparation process

Method used

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  • Preparing method for Ti45Nb alloy disc circular wire
  • Preparing method for Ti45Nb alloy disc circular wire
  • Preparing method for Ti45Nb alloy disc circular wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Step 1, use a Φ18.5mm Ti45Nb alloy polished bar with uniform composition and uniform horizontal and vertical structures, use a two-roller reversible cold rolling mill, rolls with square holes, roll 9 passes, and the pass deformation is 11% to 17%, rolled to a square bar billet of 11.7mm square.

[0050] Step 2, use a wire drawing machine to round the square bar blank obtained by cold-rolling the pass in step 1, and use a double-type square-to-round pass roll die to round it in one pass, and the deformation of the round pass is 16% to 18 %. After 5 passes of rounding, the roller mold draws the wire to Φ8.0mm, and the deformation of the drawing pass is 13% to 15%.

[0051] Step 3: anneal the Φ8.0mm coiled wire obtained in step 2 in a vacuum furnace at a holding temperature of 790° C. to 820° C. for 1 h to 2 h, and cool in a furnace.

[0052] Step 4, obtain Φ8.0mm round wire material through step 3, use the cold tandem rolling mill, the rolls installed alternately horizo...

Embodiment 2

[0055] Step 1, use a Φ17.5mm Ti45Nb alloy polished bar with uniform composition and uniform horizontal and vertical structures, use a two-roller reversible cold rolling mill, rolls with square holes, roll 6 passes, and the pass deformation is 3% to 14%, rolled to a 12mm square bar.

[0056] Step 2, use a wire drawing machine to round the square bar billet obtained by cold-rolling the pass in step 1, and use a double-type square-to-round pass roll die to round it in one pass, and the deformation of the round pass is 13% to 15% %. After rounding, the roller dies are drawn to a Φ8.0mm round wire in 7 passes, and the deformation of the drawing passes is 10% to 13%.

[0057] Step 3: anneal the Φ8.0mm coiled wire material obtained in step 2 in a vacuum furnace at a holding temperature of 820° C. to 850° C. for 1 h to 2 h, and cool in a furnace.

[0058] Step 4, use the Φ8.0mm round wire material obtained in step 3, and use the cold tandem rolling mill to cold-roll the rolls instal...

Embodiment 3

[0061] Step 1, use a Φ18.5mm Ti45Nb alloy polished bar with uniform composition and uniform horizontal and vertical structures, use a two-roller reversible cold rolling mill, rolls with square grooves, roll 16 passes, and the pass deformation is 5% to 15%, rolled to a 9.1mm square billet.

[0062] Step 2, use a wire drawing machine to round the square bar blank obtained by cold-rolling the pass in step 1, and use a two-unit square-to-round pass roll die to round it in one pass, and the deformation of the round pass is 12% to 14 %. After rounding, the roller die draws the wire to Φ8.0mm in one pass, and the deformation of the drawing pass is 11% to 13%.

[0063] Step 3: anneal the Φ8.0mm coiled wire material obtained in step 2 in a vacuum furnace at a holding temperature of 850° C. to 870° C. for 1 h to 2 h, and cool in a furnace.

[0064] Step 4, use the Φ8.0mm coiled wire material obtained in step 3, and use the cold tandem rolling mill to cold-roll the rolls installed alte...

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Abstract

The invention discloses a preparing method for a Ti45Nb alloy disc circular wire. A Ti45Nb alloy polishing stick uniform in component and structure is subjected to cold rolling into a square bar blank through a square hole type series roller; then, the square bar blank is sequentially pulled into a circular blank and the wire, and vacuum annealing is conducted; and after annealing, the wire is subjected to cold continuous rolling into the small specification from the large specification through a cold continuous rolling machine. After cold continuous rolling, two racks are flatly and alternately provided with circular hole rolling type rollers, and the circular wire with certain size precision is obtained through rolling. The circular wire is subjected to oil removal treatment and rounding, and the Ti45Nb alloy disc circular wire is obtained. The method is adopted for preparing the Ti45Nb alloy disc circular wire, the head and tail size consistency is high in the whole batch, and roundness is not larger than 0.03 mm. Surface roughness Ra is smaller than or equal to 1.2 microns, and vortex flaw detection is qualified. Transverse and longitudinal structures are fine and uniform, the longitudinal streamline is obvious, and the corresponding standard requirement is met. The wire annealing state room temperature mechanical performance consistency and stability are high.

Description

technical field [0001] The invention belongs to the technical field of titanium alloy material processing, and in particular relates to a method for preparing a Ti45Nb alloy coil wire. Background technique [0002] More and more advanced aircraft and spacecraft at home and abroad choose titanium alloys and composite materials, and the amount of titanium alloy fasteners used as composite material connectors is also increasing. Compared with alloy steel fasteners, titanium alloy has obvious weight reduction effect, and at the same time has excellent corrosion resistance, especially the positive potential is just matched with carbon fiber composite materials, which can effectively prevent galvanic corrosion of fasteners. In addition, titanium alloy also has good elasticity and non-magnetism, which is of great significance to prevent fastener loosening and magnetic field interference. [0003] Ti45Nb alloy is a rivet material used in the aerospace field, which has the character...

Claims

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Application Information

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IPC IPC(8): B21C37/04
CPCB21C37/047
Inventor 侯峰起杨辉杜小联董卫选郑念庆和永岗何永胜尚金金马凡蛟赖运金王凯旋
Owner 西部超导材料科技股份有限公司
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