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TB9 titanium alloy wire rod and manufacturing method thereof

A technology of titanium alloy wire and production method, which is applied in the field of titanium alloy processing, can solve problems such as increased wire drawing resistance, accumulated tumors, and large deformation resistance, and achieves the effects of improved service life, uniform structure, and uniform cross-sectional properties

Active Publication Date: 2020-08-07
西安圣泰金属材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] TB9 alloy has high content of β-stabilizing elements and high deformation resistance
[0004] Due to the high surface affinity, large deformation heat, and large heat capacity of titanium alloy wire rods, the wires will rub against the mold during processing, heat up, produce scabs, scratch the surface, increase wire drawing resistance, and surface cracks appear. It is difficult to produce silk rods with smooth surface, no scratches, no cracks, fine structure and stable performance in large quantities.

Method used

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  • TB9 titanium alloy wire rod and manufacturing method thereof
  • TB9 titanium alloy wire rod and manufacturing method thereof
  • TB9 titanium alloy wire rod and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] See figure 1 . The embodiment of the present invention provides a kind of manufacturing method of TB9 titanium alloy wire rod, comprises the following steps:

[0030] S110. Obtain a TB9 titanium alloy billet.

[0031] S120. Heating the TB9 titanium alloy billet, the rolling heating temperature is 130-200° C. above the phase transformation, and the heating time is 60-100 min, to obtain a heat-treated billet.

[0032] Specifically, heating at 130°C to 200°C above the phase transition point can homogenize the structure of the rolled billet and make the structure of each part uniform. At this temperature, the structure of the TB9 titanium alloy is a β-phase structure, and the deformation resistance is small, which is conducive to deformation. Processing, and reasonable heating time control can avoid excessive grain growth.

[0033] S130. Rolling the heat-treated billet for 10-13 passes to obtain a rolled billet.

[0034] S140. Using a tubular hot-drawing furnace to hot-...

Embodiment 2

[0046] The composition of TB9 titanium alloy is: Al: 3%-4%, V: 7.5%-8.5%, Cr: 5.5%-6.5%, Mo: 3.5%-4.5%, Zr: 3.5%-4.5%, and the balance is Ti.

[0047] Step 1. Select a TB9 titanium alloy billet with a specification of Φ70mm, place it in a box-type resistance furnace, heat it at 200°C above the phase transition point, keep the furnace for 100min, and roll it to Φ13.5mm in 13 passes. The amount of deformation in each pass is 8% to 25%.

[0048] Step 2, heating the strip blank obtained by rolling in step 1 in a tubular hot-drawing furnace, the heating temperature is selected at 60-90°C above the phase transition point, the heating method is continuous-pass heating, and the drawing line speed is 2.5 ~4m / min, 9 passes of hot drawing to Φ8mm, the deformation of each pass is 13%~18%.

[0049] Step 3, heating the wire and rod material that has been hot-drawn in step 2 in a tubular hot-drawing furnace for on-line heat treatment to obtain the TB9 titanium alloy rod and wire material o...

Embodiment 3

[0053] The composition of TB9 titanium alloy is: Al: 3%-4%, V: 7.5%-8.5%, Cr: 5.5%-6.5%, Mo: 3.5%-4.5%, Zr: 3.5%-4.5%, and the balance is Ti.

[0054] Step 1. Select a TB9 titanium alloy billet with a specification of Φ60mm, place it in a box-type resistance furnace, heat it at 150°C above the phase transition point, keep it in the furnace for 80min, and roll it to Φ10.5mm in 12 passes. The amount of deformation in each pass is 8% to 25%.

[0055] Step 2, heating the strip blank obtained by rolling in step 1 in a tubular hot-drawing furnace, the heating temperature is selected at 40-70°C above the phase transition point, the heating method is continuous-pass heating, and the drawing line speed is 1.5 ~3m / min, 9 passes of hot drawing to Φ6mm, the deformation of each pass is 9%~14%.

[0056] Step 3, heating the wire and rod material that has been hot-drawn in step 2 in a tubular hot-drawing furnace for on-line heat treatment to obtain the TB9 titanium alloy rod and wire materi...

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Abstract

The embodiment of the invention provides a TB9 titanium alloy wire rod and a manufacturing method thereof. According to the TB9 titanium alloy wire rod and the manufacturing method thereof, the size,the surface quality and the structure of the titanium alloy wire rod are controlled through the heating temperature, the pass deformation and the drawing linear speed. The TB9 titanium alloy wire rodprepared through the method is fine in structure, the grain size is superior to the sixth grade, and the grain size grading difference among the edge part, the half radius part and the core structureof the wire rod is smaller than the first grade; and after the TB9 wire rod with uniform structure and small grain size is subjected to solution and aging heat treatment, the cross section performanceis uniform and consistent, and the service life can be effectively prolonged.

Description

technical field [0001] The invention belongs to the technical field of titanium alloy processing, and in particular relates to a TB9 titanium alloy wire rod and a manufacturing method thereof. Background technique [0002] TB9 titanium alloy is a high-alloyed, high-strength, metastable β-type titanium alloy. Its nominal composition is Ti-3Al-8V-6Cr-4Mo-4Zr. This grade of titanium alloy has high specific strength, good corrosion resistance, Excellent mechanical properties and other comprehensive properties. At the same time, its heat treatment performance is high and excellent. After solution aging treatment, its tensile strength can reach 1241-1448MPa, and its fracture toughness is 58-66MPa m1 / 2. It can be used as a spring material in a solid solution state. It has good cold formability under certain conditions, and can be processed into products such as plates, bars and wires. It is widely used in aviation springs, automobile and motorcycle springs, high-strength fasteners,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C37/04B21C1/00B21C9/00C21D9/00C22C14/00C22F1/18
CPCB21C37/04B21C1/00B21C9/00C22F1/183C21D9/0075C22C14/00
Inventor 雷雨曹继敏樊亚军罗乾伟贺峰王戈
Owner 西安圣泰金属材料有限公司
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