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Machining method of specially-shaped titanium alloy needle tubes

A processing method and titanium alloy technology, which is applied in the processing field of titanium alloy special-shaped needle tubes, can solve the problems of corrosion resistance and service life that are difficult to meet the analysis tester, poor measurement accuracy, and increase analysis costs, so as to reduce inspection quality accidents, High precision, solve the effect of difficult processing

Inactive Publication Date: 2020-06-02
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most of the special-shaped needle tubes in the world are made of 316L stainless steel, which has low strength and hardness, heavy weight, poor measurement accuracy, corrosion resistance and service life and other performances that are difficult to meet the standard requirements of various analytical testers. greatly increases the cost of analysis

Method used

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  • Machining method of specially-shaped titanium alloy needle tubes
  • Machining method of specially-shaped titanium alloy needle tubes
  • Machining method of specially-shaped titanium alloy needle tubes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This embodiment includes the following steps:

[0030] Step 1. Cut the TC4 ELI titanium alloy wire for surgical implantation with a diameter of Φ6mm and meet the GB / T 13810-2017 standard with a metal cutting machine, and then use a flat-end machine to flatten both ends to obtain a cylindrical rod with a length of 140mm;

[0031] Step 2. Drill a central deep hole with a diameter of Φ1.42mm in the center of the end face of the cylindrical rod obtained in step 1 to obtain a thick-walled pipe;

[0032] Step 3. Process the thick-walled tube obtained in step 2 on a CNC lathe, with one end of the thick-walled tube as the head and a length of 28 mm. The outer diameter of the tube body is Φ5.42 mm, and then the remaining tube of the thick-walled tube The outer diameter of the body is processed to Φ3.22mm;

[0033] Step 4. Process the thick-walled pipe after the outer diameter processing in step 3 on a CNC lathe, and process the outer diameter of a section of the pipe body whose...

Embodiment 2

[0041] This embodiment includes the following steps:

[0042] Step 1. Cut the TC4 ELI titanium alloy wire for surgical implantation with a diameter of Φ5mm and comply with the GB / T 13810-2017 standard with a laser cutting machine, and then use a flat-end machine to flatten both ends to obtain a cylindrical rod with a length of 130mm;

[0043] Step 2, using a deep hole drilling machine to drill a central deep hole with a diameter of Φ1.4mm in the center of the end face of the cylindrical rod obtained in step 1 to obtain a thick-walled pipe;

[0044] Step 3. Process the thick-walled tube obtained in step 2 on a CNC lathe, with one end of the thick-walled tube as the head and a length of 19.5 mm. The outer diameter of the tube body is Φ4.42 mm, and then the remaining thick-walled tube The outer diameter of the pipe body is processed to Φ2.22mm;

[0045] Step 4. Process the thick-walled pipe after the outer diameter processing in step 3 on the CNC lathe, and process the outer dia...

Embodiment 3

[0051] This embodiment includes the following steps:

[0052] Step 1. Cut the TC4 ELI titanium alloy wire for surgical implants with a diameter of Φ7mm and meet the GB / T 13810-2017 standard with a wire-cut electric discharge machine, and then use a flat-end machine to flatten both ends to obtain a cylinder with a length of 150mm Great;

[0053] Step 2. Drill a central deep hole with a diameter of Φ1.5mm in the center of the end face of the cylindrical rod obtained in step 1 to obtain a thick-walled tube;

[0054] Step 3. Process the thick-walled tube obtained in step 2 on a CNC lathe, with one end of the thick-walled tube as the head, and the outer diameter of a section of the tube body with a length of 37.5 mm is processed to Φ6.42 mm, and then The outer diameter of the pipe body is processed to Φ4.22mm;

[0055] Step 4. Process the thick-walled pipe after the outer diameter processing in step 3 on the CNC lathe, and process the outer diameter of a section of the pipe body ...

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Abstract

The invention discloses a machining method of specially-shaped titanium alloy needle tubes. The method includes the following steps that 1, titanium alloy wires are cut sequentially, two ends are flattened, and cylindrical rods are obtained; 2, deep holes are drilled in the centers of the end surfaces of the cylindrical rods, and thick-wall tubes are obtained; 3, the outer diameters of the thick-wall tubes are machined; 4, the thick-wall tubes with the outer diameters machined are forged rotationally, and specially-shaped tube crude products are obtained; 5, fine grinding, rough polishing andfine polishing are performed on the specially-shaped tube crude products sequentially; 6, margins of the specially-shaped tube crude products after fine polishing are removed; and 7, the specially-shaped tube crude products after margin removal are chamfered, and the specially-shaped titanium alloy needle tubes are obtained. The specially-shaped titanium alloy needle tubes prepared with the methodare high in strength and hardness, light in mass, excellent in corrosion resistance, smooth in liquid flow and high in biocompatibility with living bodies, cross-infection phenomena during testing are prevented, the sample transfer precision requirements are met, the service life of the needle tubes is prolonged, the sample injection effect during injection is improved, and the needle tubes can be widely applied to various major instruments.

Description

technical field [0001] The invention belongs to the technical field of titanium alloy medical device processing, and in particular relates to a processing method of a titanium alloy special-shaped needle tube. Background technique [0002] At present, most of the special-shaped needle tubes in the world are made of 316L stainless steel, which has low strength and hardness, heavy weight, poor measurement accuracy, corrosion resistance and service life and other performances that are difficult to meet the standard requirements of various analytical testers. greatly increased the cost of analysis. As a traditional biomedical surgical implant material, TC4 ELI titanium alloy has the characteristics of high strength, high hardness, light weight, strong corrosion resistance and other comprehensive properties, and is widely used in aerospace, medical, chemical, etc. In important areas, with the development of science and technology, the medical device industry has higher and highe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 麻西群王云余森牛金龙
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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