Cutter blank forming technology of ceramic surgical blade

Abstract

The invention discloses a cutter blank forming technology of a ceramic surgical blade. The cutter blank forming technology of the ceramic surgical blade sequentially includes the following execution steps that firstly, slurry is ground, ball milling frequency is 30 Hz, and ball milling time is 24 hours; secondly, tape-casting slurry is prepared, and the viscosity is required to be 8000-12000 MPa.s; thirdly, a blank strip is prepared, the rotation speed of a tape-casting machine is 20 mm / min, and the thickness of the generated blank strip is 0.35+ / -0.02 mm; fourthly, lamination isostatic pressing forming is conducted, multiple laminations are stacked at equal thickness, isostatic pressure is 25-30 MPa, and the water temperature is required to be 85+ / -3 DEG C; fifthly, punching forming and sintering are carried out, sintering temperature is 1350-1380 DEG C, and sintering time is 2 hours; sixthly, appearance inspection is conducted. The cutter blank forming technology of the ceramic surgical blade is high in production efficiency, high in density, bending strength and Vickers hardness of the formed cutter blank, high in sintering yield and high in cutting edge sharpness.

Description

technical field [0001] The invention relates to a blank forming process of a ceramic surgical blade, in particular to a blank forming process of a zirconia ceramic surgical blade. Background technique [0002] The scalpel is a very important tool in medical surgery, which provides a strong guarantee for human health. A scalpel generally includes a blade and a handle, and the blade is generally made of a metal material. The most commonly used metal material is stainless steel, the sharpness of the blade can only reach 0.3-0.4, and the blade of the stainless steel scalpel will have a sawtooth structure during processing. After the surgical operation with a scalpel, the wound is not smooth enough, the healing is slow, and it is easy to cause scar formation. In addition, scalpels made of metal materials have the risk of metal elements spreading, thus contaminating the wound, which is also not conducive to wound healing. Moreover, the scalpel made of metal material has low har...

AI Technical Summary

Problems solved by technology

Because zirconia ceramics have many excellent characteristics, if it can be applied to surgical blades, it will significantly improve the performance of surgical blades. However, due to the complexity of processing zirconia ceramics and the special industry standards in the field of medical devices, the existing technology Supplied surgical blades made of zirconia ceramics could not meet the requirements or the satisfaction was low

At present, there are many molding processes for zirconia ceramics, such as gel molding, dry powder compression molding, injection molding, grouting molding and tape casting, etc. Among them, dry powder compression molding, injection molding, and grouting molding have low production efficiency and poor body structure. Defects such as looseness and low strength and hardness are not suitable for the preparation of zirconia ceramic scalpel blanks. The Chinese invention with publication number 104771206A discloses a machining method for ceramic surgical blade blanks made of zirconia after molding , but the detailed process of the forming process of the knife blank is not disclosed