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Preparation technology for medical beta type titanium alloy capillary tubes

A preparation process and capillary technology, applied in the direction of temperature control, mandrel, etc., can solve the problems of medical β-type titanium alloy microcracks, high cost, low processing efficiency, etc., to achieve flexible production, low cost, and pass reduction big effect

Inactive Publication Date: 2016-04-13
宝鸡市利泰有色金属有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the deficiencies in the existing technology, the present invention provides a preparation technology for medical β-type titanium alloy capillary tubes, which overcomes the defects of easy microcracks, low processing efficiency and high cost in preparing medical β-type titanium alloy by the existing technology.

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  • Preparation technology for medical beta type titanium alloy capillary tubes
  • Preparation technology for medical beta type titanium alloy capillary tubes

Examples

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preparation example Construction

[0033] A preparation process of a medical β-type titanium alloy capillary, comprising the following steps:

[0034] Step 1, extruding to prepare the tube blank

[0035] The β-type medical titanium alloy ingot is prepared by vacuum consumable arc melting method, and then the titanium alloy ingot is forged and billeted into a round ingot, and then the round ingot is extruded into a tube billet on an extruder;

[0036] The diameter of the round ingot is Φ120-150mm, the diameter of the tube blank is Φ60-90mm, and the wall thickness is 10-30mm.

[0037] Step 2. Rolling and shrinking

[0038] The above-mentioned tube blank is rolled by a three-roll planetary rolling mill, and the tube blank is subjected to online induction heating during rolling, and the specific heating temperature value is determined by the material of the tube blank; the heating temperature is 800-1000°C.

[0039] The three-roller planetary rolling mill rolls the tube blank twice, and the first time rolls the t...

Embodiment 1

[0048] A β-type medical titanium alloy capillary with a composition of Ti-20Nb-3Zr was prepared.

[0049](1) Extrusion to produce tube blanks: Ti-20Nb-3Zr is smelted into titanium alloy ingots by vacuum consumable arc melting method. After forging and billeting, a round ingot with a diameter of Φ120mm is made, and the 1250-ton extrusion machine Extrude a tube blank with a diameter of Φ60mm and a wall thickness of 10mm, and polish the inside and outside.

[0050] (2) Rolling diameter reduction: The extruded Ti-20Nb-3Zr titanium alloy tube blank is rolled twice by a three-roller planetary rolling mill: the first rolling is to a tube blank with a diameter of Φ32mm and a wall thickness of 3mm; The second rolling is to a tube blank with a diameter of Φ12mm and a wall thickness of 1.5mm. The tube blank is heated by online induction during rolling. The heating temperature is 850°C. The rolling feed speed is 2m / min for the first time, and the second The time is 4m / min;

[0051] (3) ...

Embodiment 2

[0055] The β-type medical titanium alloy capillary with the composition of Ti-14Nb-5Ta was prepared.

[0056] (1) Extrusion to produce tube blanks: Ti-14Nb-5Ta is smelted into titanium alloy ingots by vacuum consumable arc melting method. After forging and billeting, a round ingot with a diameter of Φ140mm is made, and the 1250-ton extrusion machine Extrude a tube blank with a diameter of Φ70mm and a wall thickness of 15mm, and polish the inside and outside.

[0057] (2) Rolling diameter reduction: The extruded Ti-14Nb-5Ta titanium alloy tube billet is rolled twice by a three-roller planetary rolling mill: the first rolling is to a tube billet with a diameter of Φ35mm and a wall thickness of 3.5mm ; The second rolling is to a tube blank with a diameter of Φ15mm and a wall thickness of 1.8mm. During rolling, the tube blank is heated by online induction. The heating temperature is 900°C, and the rolling feed rate is 2.5m / min for the first time. The second time is 4.5m / min.

[...

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Abstract

The invention discloses a preparation technology for medical beta type titanium alloy capillary tubes. The preparation technology comprises the steps of preparing medical beta type titanium alloy ingots through the vacuum self-consuming arc melting method, carrying out forging and cogging on the titanium alloy ingots for forming round ingots, and extruding the round ingots on an extruding machine for forming tube blanks; rolling the tube blanks twice through a three-roller planetary rolling mill, and carrying out on-line induction heating on the tube blanks in the rolling process; rolling the tube blanks further through a three-roller finish tube-rolling machine, and carrying out vacuum annealing in the middle of rolling; finally, drawing the medical beta type titanium alloy tube blanks through a precision tube drawing machine for forming the finished capillary tubes; and adopting carbon fiber rods good in tensile strength, rigidity and self-lubricating property as core rods in the drawing process, and carrying out vacuum annealing in the middle of drawing. The medical beta type titanium alloy capillary tubes obtained through the preparation technology are uniform in wall thickness, smooth in surface and high in ductility; equipment is simple, production is flexible, and the cost is low. The preparation technology is especially suitable for producing the medical beta type titanium alloy capillary tubes in an industrialized and batched mode.

Description

technical field [0001] The invention belongs to the technical field of pipe material preparation, and in particular relates to a preparation process of a medical β-type titanium alloy capillary. Background technique [0002] Medical titanium alloys mainly involve three categories: α-type, β-type and α+β-type. α-type titanium alloys and α+β-type titanium alloys (such as Ti6AI4V, Ti6A17Nb, etc.) have been used successively for hard tissue repair or replacement materials ( Such as dental, joint products, and orthopedic internal fixation repair replacement bone plate and other products), among which pure titanium and other α-type titanium alloys with better plasticity can be processed into capillary tubes for intervention, but the strength is low. [0003] Compared with α-type and α+β-type titanium alloys, β-type medical titanium alloys have the following characteristics: do not contain Al, V, Ni, Co, Cr and other harmful elements to the human body, high strength, good plasticit...

Claims

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Application Information

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IPC IPC(8): B21C37/06B21B37/74B21C3/16
CPCB21C37/06B21B37/74B21C3/16
Inventor 杜广成梁贺李宗科杜涛
Owner 宝鸡市利泰有色金属有限公司
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