CN101940488A

CN101940488A - Medical clamps and method for processing cutting edge of same

Info

Publication number: CN101940488A
Application number: CN 201010216358
Authority: CN
Inventors: 王光良
Original assignee: 王光良
Current assignee: Zhejiang Xinya Medical Technology Co., Ltd.
Priority date: 2010-07-01
Filing date: 2010-07-01
Publication date: 2011-01-12
Anticipated expiration: 2030-07-01
Also published as: CN101940488B

Abstract

The invention discloses medical clamps and a method for processing a cutting edge of the same. The medical clamps comprise a substrate used as a clamp head, wherein a groove is formed on the substrate; and the cutting edge formed by cladding alloy powder with laser is arranged in the groove. The processing method comprises the following steps of: forming the groove on the substrate; filling the groove with the alloy powder; cladding the alloy powder into the groove by using a laser cladding machine to form a cladding layer; and cutting or grinding around the cladding layer by using an electrical discharge wire to remove excessive materials so as to form the cutting edge. In the processing method, the groove is formed on the substrate, the alloy powder is clad in the groove by the laser to form the cladding layer, and the joint of the bottom of the cladding layer and the substrate is a fusion layer of the substrate and the alloy powder; as the fusion layer is formed by solidifying fused liquid, the bonding is extremely firm and the fusion layer is difficult to drop; and the hardness and rust resistance of the medical clamps can be further improved by selecting proper materials.

Description

The processing method of a kind of medical calm and the medical calm edge of a knife

Technical field

The present invention relates to medical pincers, cut series products, the processing method of the particularly a kind of medical calm and the medical calm edge of a knife.

Background technology

Existing medical apparatus and instruments pincers class, the structure of cutting the class edge of a knife have following a few class basically:

1. as shown in Figure 1, 2, the carbon stainless steel material directly is processed into the edge of a knife 3 in the integral body after quenching.This type of edge of a knife, back hardness is not high because the material of rustless steel self quenches, and can not satisfy the requirement of cutting off steel wire.

2. as shown in Figure 1, 2, whole high-carbon stainless steel material directly is processed into the edge of a knife 3 after quenching.This type of edge of a knife, the back integral hardness is too high because the material of rustless steel self quenches, and caliper is just more crisp, and difficult processing.Because the general phosphorus content of this type of material is higher, rustless property is relatively poor.Although this type of edge of a knife hardness improves a lot, the steel wire of hardness cut off to(for) medical industry also has certain gap.

3. make caliper with low or middle carbon stainless steel, the edge of a knife that blade portion welding high hardness material is made.Though the problem of the edge of a knife hardness that employing the method processes solves, but because low or middle carbon stainless steel and jaw high hardness material welding performance are very poor, promptly be difficult to weld together, so generally all adopt adhering method, but behind these two kinds of material adhesives, easily become rusty in the abutting edge, and because the bonding quality problem, cutter head comes off easily.

Summary of the invention

The edge of a knife of the present invention is directed to the medical calm that exists in the above-mentioned prior art, cutting existence is not hard, and the technical problem of easily getting rusty and turning around provides a kind of edge of a knife hardness height, can not come off medical calm that rustless property is good and processing method thereof.

Technical scheme of the present invention is achieved in that

A kind of medical calm comprises the matrix as binding clip, is concaved with a groove on matrix, and the edge of a knife of alloy powder formation is arranged in the cladding of groove inner laser.

As preferably, described matrix adopting is made by the low carbon stainless steel material that can obtain more than the HRC30 that quenches; The described edge of a knife adopts Co-based alloy powder to make, described Co-based alloy powder is to be mixed by C, Cr, Si, B, Fe and Ni, wherein, the percentage by weight of C is 0.6～1.0, the percentage by weight of Cr is 14～18, and the percentage by weight of Si is 3.5～5.5, and the percentage by weight of B is 3.0～4.5, the percentage by weight of Fe is 0～15, and surplus is Ni.It is the Co-based alloy powder of FD.F102Fe that the present invention selects the trade mark for use, and higher hardness (greater than HRC60) is arranged after its fusing is solidified, and anti-intermetallic polishing machine is good, is fit to very much make the edge of a knife.

A kind of processing method of the medical calm edge of a knife, earlier process a groove at matrix, filler alloys powder in groove forms cladding layer with the molten machine that covers of laser with the alloy powder cladding in groove, process after the excess stock excision with Wire EDM or mill around cladding layer, form the edge of a knife.

As preferably, described matrix adopting is made by the low carbon stainless steel material that can obtain more than the HRC30 that quenches; The described edge of a knife adopts Co-based alloy powder to make, described Co-based alloy powder is to be mixed by C, Cr, Si, B, Fe and Ni, wherein, the percentage by weight of C is 0.6～1.0, the percentage by weight of Cr is 14～18, and the percentage by weight of Si is 3.5～5.5, and the percentage by weight of B is 3.0～4.5, the percentage by weight of Fe is 0～15, and surplus is Ni.

Adopted the principle of the present invention and the beneficial effect of technique scheme to be:

The present invention processes a groove on matrix, filler alloys powder in groove, reuse laser forms cladding layer with the alloy powder cladding in this groove, cladding layer bottom and the fused layers of the matrix place of combining for matrix and alloy powder, after coagulation forms because this fused layers is the liquid fusion, so it is in conjunction with very firm, difficult drop-off, and then cladding layer is cut or grind method for processing with line unnecessary material is got rid of, form the edge of a knife, very firm, difficult drop-off, and select for use suitable material to can further improve its hardness and rustless property.

The processing that structure of the present invention and processing method are not only applicable to medical calm, cut, the processing of also be equally applicable to other industry, kind pincers, cutting.

Description of drawings

Fig. 1 is the structural representation of the edge of a knife in the prior art;

Fig. 2 is that the A of Fig. 1 is to view;

Fig. 3 is the structural representation of matrix of the present invention;

Fig. 4 is that the A of Fig. 3 is to view;

Fig. 5 is the structural representation that cladding forms the alloy powder layer in the groove;

Fig. 6 is that the A of Fig. 5 is to view;

Fig. 7 is for processing the structural representation of the edge of a knife on the matrix of the present invention;

Fig. 8 is that the A of Fig. 7 is to view.

The specific embodiment

The specific embodiment of the present invention is as follows:

Embodiment: a kind of medical calm, as Fig. 7, shown in Figure 8, comprise matrix 1 as binding clip, on matrix 1, be concaved with a groove 2, the longitudinal section of groove 2 is semicircle, forms the edge of a knife 3 at groove 2 inner laser cladding alloy powders.Described matrix 1 adopts by the low carbon stainless steel material that can obtain more than the HRC30 that quenches to be made, the described edge of a knife 3 adopts Co-based alloy powder to make, described Co-based alloy powder is to be mixed by C, Cr, Si, B, Fe and Ni, wherein, the percentage by weight of C is 0.7, and the percentage by weight of Cr is 15, the percentage by weight of Si is 4.3, the percentage by weight of B is 4.0, and the percentage by weight of Fe is 10, and surplus is Ni.

A kind of processing method of the medical calm edge of a knife comprises the steps: shown in Fig. 3,4, processes a groove 2 at matrix 1 earlier, shown in Fig. 5,6, in groove 2, fill Co-based alloy powder, same, described Co-based alloy powder is to be mixed by C, Cr, Si, B, Fe and Ni, wherein, the percentage by weight of C is 0.7, and the percentage by weight of Cr is 15, the percentage by weight of Si is 4.3, the percentage by weight of B is 4.0, and the percentage by weight of Fe is 10, and surplus is Ni; With the molten machine that covers of laser above-mentioned Co-based alloy powder cladding is formed cladding layer 4 in groove 2, shown in Fig. 7,8, process after the excess stock excision, form the edge of a knife 3 around cladding layer 4 usefulness Wire EDM or mill.

As Fig. 5, shown in Figure 7, cladding layer 4 bottoms and the fused layers 5 of matrix 1 place of combining for matrix and Co-based alloy powder, after coagulation forms because this fused layers 5 is the liquid fusion, so it is in conjunction with very firm, difficult drop-off.

Claims

1. a medical calm is characterized in that: comprise the matrix (1) as binding clip, be provided with a groove (2) on matrix (1), the edge of a knife (3) of alloy powder formation is arranged in groove (2) inner laser cladding.

2. a kind of medical calm according to claim 1 is characterized in that: described matrix (1) adopts by the low carbon stainless steel material that can obtain more than the HRC30 that quenches and makes; The described edge of a knife (3) adopts Co-based alloy powder to make, described Co-based alloy powder is to be mixed by C, Cr, Si, B, Fe and Ni, wherein, the percentage by weight of C is 0.6～1.0, the percentage by weight of Cr is 14～18, and the percentage by weight of Si is 3.5～5.5, and the percentage by weight of B is 3.0～4.5, the percentage by weight of Fe is 0～15, and surplus is Ni.

3. the processing method of a medical calm edge of a knife, it is characterized in that: process a groove (2) at matrix (1) earlier, filler alloys powder in groove (2), with the molten machine that covers of laser the alloy powder cladding is formed cladding layer (4) in groove (2), process after the excess stock excision with Wire EDM or mill around cladding layer (4), form the edge of a knife (3).

4. the processing method of a kind of medical calm edge of a knife according to claim 3 is characterized in that: described matrix (1) adopts by the low carbon stainless steel material that can obtain more than the HRC30 that quenches and makes; The described edge of a knife (3) adopts Co-based alloy powder to make, described Co-based alloy powder is to be mixed by C, Cr, Si, B, Fe and Ni, wherein, the percentage by weight of C is 0.6～1.0, the percentage by weight of Cr is 14～18, and the percentage by weight of Si is 3.5～5.5, and the percentage by weight of B is 3.0～4.5, the percentage by weight of Fe is 0～15, and surplus is Ni.