CN102336036A

CN102336036A - Carbide blade

Info

Publication number: CN102336036A
Application number: CN2011102206289A
Authority: CN
Inventors: 李梁
Original assignee: Sichuan Oilman Machinery Co Ltd
Current assignee: Sichuan Oilman Machinery Co Ltd
Priority date: 2011-08-03
Filing date: 2011-08-03
Publication date: 2012-02-01

Abstract

The invention provides a carbide blade. The carbide blade (1) comprises a base body (11) and a coating (12), wherein the base body (11) is a hard alloy and the coating (12) is uniformly coated on the outer periphery of the base body (11); the thickness of the coating (12) is 10-30 microns and the coating (12) contains a first coating (121) and a second coating (122) at least. The blade provided by the invention has the advantages that: the structure is simple, the blade coating is not easy to drop off and crush, the requirements on the thickness can be met and the service life of the blade is prolonged.

Description

A kind of carbide chip

Technical field

The present invention relates to the cutter field of cut, relate in particular to a kind of carbide chip of cut.

Background technology

Workpiece is being added man-hour, and the contact of cutter and workpiece is exactly contacting between cutting edge and the workpiece of blade, cuts the parts that need processing fast through cutting edge; Because cutting speed is fast and workpiece cutting is more and more harder, cause cutting edge in cutting, constantly to produce higher wearing and tearing and higher temperature, and the application of carbide alloy in blade more and more widely; Though the hardness of carbide chip is higher; But because in the working angles, the wearing and tearing of the metal fillings that on rake, is constantly formed and cause crescent hollow abrasion, the workpiece of having processed also will cause flank wear along the back knife face slippage of blade; Blade reaches very high temperature on preceding sensibilities simultaneously; To cause the divergent contour wearing and tearing, then temperature significantly lowers on the knife face, presents abrasive wear; This shows that the reliability of carbide chip and life-span need higher raising and requirement.

In the prior art, in the surface deposition coating of carbide chip, can effectively improve reliability thus usually, existing carbide chip is coated with PVD or CVD coating; Optional coating have Ti (C, N), TiN, (Ti, Al) N or the like; In two kinds of coatings, the PVD coating has better fineness and stress, carry load preferably; But PVD must be very thin, and this is because thicker PVD will cause easily peeling off, break and tipping, and the maximum coating layer thickness that before peeling off, can on blade, deposit depends primarily on the radius of cutting edge; Too sharp will causing of cutting edge peels off and tipping easily, though and CVD can solve the problem of coating layer thickness because the CVD coating relatively exists comparatively coarse and the problem that is difficult to introduce stress; Thus, under many circumstances, need combine the advantage of PVD and CVD simultaneously; Both need deposit thicker coating, and also need better fineness and stress to introduce simultaneously, so that the better wear resistance ability to be provided.

Summary of the invention

The object of the present invention is to provide a kind of carbide chip, this blade structure is simple, insert coating difficult drop-off, cracked, and can satisfy the demand of thickness, increase the life-span of blade.

For realizing above-mentioned purpose, the invention discloses a kind of carbide chip, this carbide chip 1 comprises matrix and coating, and matrix is a carbide alloy, and coating is coated in the outside of matrix uniformly, and the thickness of coating is 10-30 μ m, it is characterized in that:

This coating includes first coating and second coating at least;

First coating is a metal coating, and this metal coating is the metal coating of from Al, Cr, V, Ta and Zr, choosing any one kind of them or several kinds are made up, and the thickness of this first coating is 100-800nm;

Second coating be choose any one kind of them among Al, Cr, V, Ta and the Zr or several kinds metal nitride, oxidized metal, boride metal, carbonization metal coating, the thickness of this second coating is 6-30 μ m.

Wherein, around second coating, also be coated with the 3rd coating, the 3rd coating is a nonmetallic coating, and this nonmetallic coating is carbon fiber or ultra hard ceramic, and the thickness of the 3rd coating is 500-800nm.

Wherein, first coating deposits through the PVD technology.

Wherein, second coating deposits through the CVD technology.

Wherein, the 3rd coating deposits through the PVD technology.

Pass through said structure; Carbide chip of the present invention scribbles laminated coating on the matrix of blade; The fineness of not only abundant sharp PVD coating and stress are introduced, also can utilize the thickness of CVD coating simultaneously, thereby have avoided coating shedding, cracked possibility; Increase the life-span of cutter, also improved the abrasion resistance of blade simultaneously.

Description of drawings

Fig. 1 has shown the sketch map of carbide chip of the present invention.

Fig. 2 has shown the part amplification view of carbide chip of the present invention.

The present invention will further describe in detail through following specific embodiment, and further combine will obtain knowing more and significantly understanding to the explanation of accompanying drawing.

The specific embodiment

Referring to Fig. 1, shown the sketch map of carbide chip 1 of the present invention, this carbide chip 1 comprises matrix 11 and coating 12; Matrix 11 is a carbide alloy; Coating 12 is coated in the outside of matrix 11 uniformly, and preferably the thickness of coating 12 is 10-30 μ m, and more preferably the thickness of coating 12 is 15-20 μ m; This thicker coating 12 can effectively be protected the different surfaces of carbide chip 1 on the one hand, and can avoid coating shedding, cracked possibility.

Referring to Fig. 2; The part amplification view that has shown carbide chip 1 of the present invention; Therefrom can specifically see the concrete composition of coating 12; This coating 12 include at least first coating 121 and second coating, 122, the first coatings 121 evenly be coated on matrix 11 around, second coating 122 be coated on first coating 121 around.

Wherein, First coating 121 is a metal coating, and this metal coating can be chooses any one kind of them from Al, Cr, V, Ta and Zr or metal coating that several kinds are made up, and the thickness of this first coating 121 is 200-800nm; Preferably; The thickness of first coating 121 is 300-600nm, and more preferably, the thickness of first coating 121 is 500nm-550nm.

Wherein second coating 122 can be choose any one kind of them among Al, Cr, V, Ta and the Zr or several kinds metal nitride, oxidized metal, boride metal, carbonization metal coating; The thickness of this second coating 122 is 10-30 μ m; Preferably; The thickness of second coating 122 is 15-20 μ m, and more preferably, the thickness of second coating 122 is 17-18 μ m.

Preferably, around second coating 122, also being coated with the 3rd coating 123, the three coatings 123 is nonmetallic coating; This nonmetallic coating is carbon fiber, ultra hard ceramic etc.; The thickness of the 3rd coating 123 is 500-800nm, and preferably, the thickness of the 3rd coating 123 is 600-700nm; More preferably, the thickness of the 3rd coating 123 is 620nm-680nm.

Preferably, first coating 121 deposits through the PVD technology.

Preferably, second coating 122 deposits through the CVD technology.

Preferably, the 3rd coating 123 deposits through the PVD technology.

Through design of the present invention, covered by laminated coating around the carbide chip, first coating 121 is the simple metal coating, and is thinner relatively; And because the characteristic of simple metal, hardness is comparatively moderate, and certain toughness and caking property preferably are provided, and second coating 122 is a metallic compound; Its hardness is higher, and is thicker relatively, and wearability preferably is provided thus, increased service life; The 3rd optional coating 123 is a nonmetallic coating, and its hardness is high, and wearability is good, and protection can further be provided.

Below through the bright superiority of the present invention of as an exampleBSEMGVR takeN-PSVSEMOBJ:

Adopt carbide alloy as blade base, divide three groups to experimentize, first group is employing CVD deposition alundum (Al of the prior art, and deposit thickness is 20 μ m; Second group deposits first coating 121 and second coating 122 respectively through the step 1 in the method for the present invention and two, and wherein the material of first coating 121 is Cr, and thickness is 500nm, and the material of second coating 122 is Cr _0.52V _0.48C, thickness are 18 μ m; The 3rd group deposits first coating 121, second coating 122 and the 3rd coating 123 respectively through the step 1 in the method for the present invention, two and three, and wherein the material of first coating 121 is Cr, and thickness is 500nm, and the material of second coating 122 is Ti _0.33Al _0.67N, thickness are 18 μ m, and the material of the 3rd coating 123 is a carbon fiber, and thickness is 650nm; Carry out the test of three groups of blades through turning, the test piece material is a hardened steel, and in the test, first group of blade average life span is 24 minutes, and second group of blade average life span is 86 minutes, and the 3rd group of blade average life span is 92 minutes.

Crossing above-mentioned example can know, laminated coating of the present invention mechanism makes the service life of carbide chip and wear resistance be significantly improved.

It is obvious that, and above description and record only are for example rather than in order to limit disclosure of the present invention, application or use.Though described and be described in the drawings embodiment in an embodiment; But the optimal mode that the present invention does not limit by the accompanying drawing example and the conduct of describing is in an embodiment thought at present is with the specific examples of the instruction of embodiment of the present invention, and scope of the present invention will comprise any embodiment of the specification that falls into the front and appended claim.

Claims

1. carbide chip, this carbide chip (1) comprises matrix (11) and coating (12), and matrix (11) is a carbide alloy, and coating (12) is coated in the outside of matrix (11) uniformly, and the thickness of coating (12) is 10-30 μ m, it is characterized in that:

This coating (12) includes first coating (121) and second coating (122) at least;

First coating (121) is a metal coating, and this metal coating is the metal coating of from Al, Cr, V, Ta and Zr, choosing any one kind of them or several kinds are made up, and the thickness of this first coating is 100-800nm;

Second coating (122) be choose any one kind of them among Al, Cr, V, Ta and the Zr or several kinds metal nitride, oxidized metal, boride metal, carbonization metal coating, the thickness of this second coating is 6-30 μ m.

2. carbide chip as claimed in claim 1; It is characterized in that also be coated with the 3rd coating (123) on every side in second coating (122), the 3rd coating (123) is a nonmetallic coating; This nonmetallic coating is carbon fiber or ultra hard ceramic, and the thickness of the 3rd coating is 500-800nm.

3. according to claim 1 or claim 2 carbide chip is characterized in that first coating (121) deposits through the PVD technology.

4. according to claim 1 or claim 2 carbide chip is characterized in that second coating (122) deposits through the CVD technology.

5. carbide chip as claimed in claim 2 is characterized in that, the 3rd coating (123) deposits through the PVD technology.