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Vacuum brazing and thermal treatment composite process for stainless steel surgical instrument and application of process

A technology of vacuum heat treatment and surgical instruments, applied in welding equipment, manufacturing tools, metal processing equipment, etc., can solve the problems of easy rust, decreased serviceability and anti-corrosion performance, deformation, etc., and achieves reduced process costs and high finished product qualification rate. , Reduce the effect of workpiece round trip

Inactive Publication Date: 2013-11-13
上海医疗器械(集团)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Causes a decline in the end-use performance and anti-corrosion performance of the product
Users complained that the head end of the pliers was deformed and easily rusted during use, which has serious defects

Method used

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  • Vacuum brazing and thermal treatment composite process for stainless steel surgical instrument and application of process
  • Vacuum brazing and thermal treatment composite process for stainless steel surgical instrument and application of process
  • Vacuum brazing and thermal treatment composite process for stainless steel surgical instrument and application of process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] The vacuum brazing-heat treatment composite process of stainless steel surgical insert forceps is as follows:

[0073] (1) Carbide is inlaid into the working end of the stainless steel surgical instrument; the brazing surface of the stainless steel surgical instrument needs to be removed with metallographic sandpaper first, and the brazing surface of the cemented carbide needs to be ground with diamond first. The paste is polished; and the size of the nickel-based brazing material is required to be slightly larger than the brazing surface of the stainless steel surgical instrument. The joint gap between the two brazing surfaces is 0.02-0.10mm. The base material of the stainless steel surgical instrument workpiece is 20Cr13 stainless steel, and the hard alloy is For K40, the solder is made of the chemical composition and performance of Bni-2 solder shown in Table 3. The above-mentioned stainless steel surgical instruments are surgical forceps.

[0074] (2) The stainless...

Embodiment 2

[0077] The vacuum brazing-heat treatment composite process of stainless steel surgical insert forceps is as follows:

[0078] (1) Carbide is inlaid into the working end of the stainless steel surgical instrument; the brazing surface of the stainless steel surgical instrument needs to be removed with metallographic sandpaper first, and the brazing surface of the cemented carbide needs to be ground with diamond first. The paste is polished; and the size of the nickel-based brazing material is required to be slightly larger than the brazing surface of the stainless steel surgical instrument, the joint gap between the two brazing surfaces is 0.08mm, the base material of the stainless steel surgical instrument workpiece is 20Cr13 stainless steel, and the hard alloy is K40. The solder is made of the chemical composition and performance of Bni-2 solder shown in Table 3. The above-mentioned stainless steel surgical instruments are surgical forceps.

[0079] (2) The stainless steel su...

Embodiment 3

[0082] The vacuum brazing-heat treatment composite process of stainless steel surgical insert forceps is as follows:

[0083] (1) Carbide is inlaid into the working end of the stainless steel surgical instrument; the brazing surface of the stainless steel surgical instrument needs to be removed with metallographic sandpaper first, and the brazing surface of the cemented carbide needs to be ground with diamond first. The paste is polished; and the size of the nickel-based brazing material is required to be slightly larger than the brazing surface of the stainless steel surgical instrument, the joint gap between the two brazing surfaces is 0.03mm, the base material of the stainless steel surgical instrument workpiece is 20Cr13 stainless steel, and the hard alloy is K40. The solder is made of the chemical composition and performance of Bni-2 solder shown in Table 3. The above-mentioned stainless steel surgical instruments are surgical forceps.

[0084] (2) The stainless steel surg...

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Abstract

The invention relates to a vacuum brazing and thermal treatment composite process for a stainless steel surgical instrument and the application of the process. An embedding method is adopted for embedding cemented carbide in the working end of the stainless steel surgical instrument, vacuum brazing and vacuum thermal treatment are adopted for synchronous treatment, the two processes are combined into one process, and on the basis of controlling the vacuum degree, the heating speed, the heating temperature, the brazing temperature, the brazing opportunity and the cooling method, the stainless steel surgical instrument with the working end embedded with the brazed cemented carbide is obtained. The stainless steel surgical instrument has excellent abrasive resistance, anti-slip performance, anti-corrosive performance and the like, the product quality is high, the energy consumption is low, the production rate is high and the operation environment is improved, and quality defects of the original process are overcome. The composite process has great significance in the process of treating stainless steel surgical instruments.

Description

technical field [0001] The invention relates to the field of processing technology of stainless steel surgical instruments, in particular to a vacuum brazing-heat treatment composite process of stainless steel surgical instruments and its application. Background technique [0002] The existing processing technology of stainless steel surgical instruments is: mechanical processing→quenching→high-frequency welding of working end→surface treatment→inspection. The disadvantage of this process is that the workpiece is partially welded after the overall quenching, and the welding heating will change the local tissue state of the workpiece, which not only affects the mechanical properties and corrosion resistance of the product, but also affects the performance of the product; secondly, welding is basically Manual operation makes quality control difficult; in addition, welding and heat treatment are operated separately, with long construction period and high energy consumption. Th...

Claims

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Application Information

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IPC IPC(8): B23K1/008B23K1/20C21D1/18
Inventor 鲍国华
Owner 上海医疗器械(集团)有限公司
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