Stainless steel rehabilitation medical instrument and manufacture method thereof

A technology of medical equipment and manufacturing method, applied in the field of preparation of stainless steel rehabilitation medical equipment, to achieve the effects of exempting from processing, reducing costs, and good surface finish

Active Publication Date: 2012-01-25
ZHEJIANG YIHUO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a stainless steel rehabilitation medical device with simple processing, improved material performance and work efficiency, and low-cost stain

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1, the specific processing method of stainless steel rehabilitation medical equipment is to mix stainless steel powder and binder to make stainless steel feed that can be injected at high temperature. The specific composition of the binder is: by weight percentage, medical paraffin 12%, ozokerite 18%, high-density polyethylene 40%, EVA resin 30%, binder and stainless steel powder by volume ratio 50:50, bonding The agent and stainless steel powder were mixed repeatedly at 150°C for 1.5 hours on a two-roll rubber mixer, and then granulated into a stainless steel feed material with fluidity at 150°C.

[0015] Put the above-mentioned feed material in a horizontal injection molding machine, process it into a blank at an injection temperature of 150°C, an injection pressure of 90MPa, and a mold temperature of 30°C, then put the blank into a trichlorethylene solution, Dissolve and degrease at high temperature for eight hours, take out and dry, put the degreased blank i...

Embodiment 2

[0016] Example 2, the specific processing method of stainless steel rehabilitation medical equipment is to mix stainless steel powder and binder to make stainless steel feed that can be injected at high temperature. The specific composition of the binder is: by weight percentage, 10% of medical paraffin, 20% of ozokerite, 45% of high-density polyethylene, 25% of EVA resin, the binder and the stainless steel powder are matched in a volume ratio of 30:70, and the bonding The agent and stainless steel powder were mixed repeatedly at 140°C for 1 hour on a two-roll rubber mixer, and then granulated into a stainless steel feed material with fluidity at 140°C.

[0017] Put the above-mentioned feed materials in a horizontal injection molding machine, process them into blanks at an injection temperature of 130°C, an injection pressure of 80MPa, and a mold temperature of 25°C. Dissolve and degrease at high temperature for 5 hours, take out and dry, put the degreased blank into a vacuum ...

Embodiment 3

[0018] Example 3, the specific processing method of stainless steel rehabilitation medical equipment is to mix stainless steel powder and binder to make stainless steel feed that can be injected at high temperature. The specific composition of the binder is: by weight percentage, medical paraffin 15%, ozokerite 20%, high-density polyethylene 35%, EVA resin 30%, binder and stainless steel powder are matched by volume ratio 40:60, bonding The agent and stainless steel powder were mixed repeatedly at 160°C for 2 hours on a two-roller rubber mixer, and then granulated into a stainless steel feed material with fluidity at 160°C.

[0019] Put the above-mentioned feed material in a horizontal injection molding machine, process it into a blank at an injection temperature of 160°C, an injection pressure of 100MPa, and a mold temperature of 35°C. Dissolve and degrease at high temperature for 10 hours, take out and dry, put the degreased blank into a vacuum furnace, sinter at a vacuum de...

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PUM

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Abstract

The invention discloses a stainless steel rehabilitation medical instrument which comprises raw materials of stainless steel powder and a binder, wherein the binder contains medical paraffin wax, mineral wax, high-density polyethylene and EVA (Ethylene Vinyl Acetate) resin. The invention further provides a manufacture method of the stainless steel rehabilitation medical instrument. The manufacture method comprises the following steps of: firstly, heating and uniformly mixing the stainless steel powder and the binder to form feed with mobility; then, processing the feed through an injection forming machine to form a blank; then, degreasing the blank; and finally, sintering the degreased blank to form the stainless steel rehabilitation medical instrument. According to the rehabilitation medical instrument produced by the invention, the special stainless steel powder material is adopted; the rehabilitation medical instrument is produced by utilizing a novel powder metallurgy injection forming process; the rehabilitation medical instrument is formed at one time without being processed; furthermore, the material performance is good; the internal structure of the product is uniform; themechanical intensity is high; the surface fineness is good; and the material performance and the working efficiency can be greatly increased.

Description

technical field [0001] The invention relates to an innovation in the material, structure and performance of a rehabilitation medical device component, which is an application of a new powder metallurgy injection molding process in the field of manufacturing complex-shaped, high-performance stainless steel functional parts, specifically a stainless steel rehabilitation medical device. preparation. Background technique [0002] With the progress of human society, the rapid development of people's utilization of resources, the increasingly serious damage to the natural environment, frequent occurrence of various natural disasters, earthquakes, floods, car accidents, etc., the number of disabled people in society is constantly increasing. Quality of life, helping all kinds of disabled people to recover as soon as possible, and to return to healthy life and work. The society urgently needs a large number of high-quality, low-cost, and effective rehabilitation medical devices. How...

Claims

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Application Information

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IPC IPC(8): B22F1/00B22F3/115
Inventor 申建中
Owner ZHEJIANG YIHUO TECH
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