阅读说明：本技术 一种硬质合金刀片及其制备方法 (Hard alloy blade and preparation method thereof ) 是由 彭洪 彭虎 樊文娟 于 2021-07-02 设计创作，主要内容包括：本发明公开了一种硬质合金刀片及其制备方法,包括硬质合金基体和涂覆在硬质合金基体上的涂层,所述硬质合金基体按组分包括：8-10份Co、3-6份TNC8、3-5份TiCN、0.8-1份C、8-10份TaC、4-6份Cr3C2和4-6份WC,所述涂层包括：TiN、份Al2O3、TiAlN2,S1、称量：利用称量装置分别称取Co、TNC8、TiCN、C、TaC、Cr3C2和WC；本发明涉及硬质合金技术领域。该硬质合金刀片及其制备方法,通过TaC的加入,进而提高合金的韧性,使得加工出来的刀片韧性更高,不易折断,通过Cr3C2的加入,使得刀片整体的耐磨性能显著提高,整个制备方法制备出来的刀片耐磨性和硬度较现有刀片有显著提升,且通过TiN、Al2O3、TiAlN2的设置,能对刀片表面形成稳定保护,使得刀片不易被腐蚀。(The invention discloses a hard alloy blade and a preparation method thereof, the hard alloy blade comprises a hard alloy substrate and a coating coated on the hard alloy substrate, and the hard alloy substrate comprises the following components: 8-10 parts of Co, 3-6 parts of TNC8, 3-5 parts of TiCN, 0.8-1 part of C, 8-10 parts of TaC, 4-6 parts of Cr3C2 and 4-6 parts of WC, wherein the coating comprises: TiN, Al2O3, TiAlN2, S1, and weighing: respectively weighing Co, TNC8, TiCN, C, TaC, Cr3C2 and WC by using a weighing device; the invention relates to the technical field of hard alloy. According to the hard alloy blade and the preparation method thereof, the toughness of alloy is further improved through the addition of TaC, so that the processed blade is higher in toughness and not easy to break, the integral wear resistance of the blade is remarkably improved through the addition of Cr3C2, the wear resistance and hardness of the blade prepared by the whole preparation method are remarkably improved compared with those of the existing blade, and the surface of the blade can be stably protected through the arrangement of TiN, Al2O3 and TiAlN2, so that the blade is not easy to corrode.)

1. A hard alloy blade comprises a hard alloy substrate and a coating coated on the hard alloy substrate, and is characterized in that: the hard alloy matrix comprises the following components in percentage by weight: 8-10 parts of Co, 3-6 parts of TNC8, 3-5 parts of TiCN, 0.8-1 part of C, 8-10 parts of TaC, 4-6 parts of Cr3C2 and 4-6 parts of WC, wherein the coating comprises: TiN, Al2O3 and TiAlN 2.

2. A cemented carbide insert according to claim 1, characterized in that: the hard alloy matrix comprises the following components in percentage by weight: 8 parts of Co, 3 parts of TNC8, 3 parts of TiCN, 0.8 part of C, 8 parts of TaC, 4 parts of Cr3C2 and 4 parts of WC, wherein the coating comprises: TiN, Al2O3 and TiAlN 2.

3. A cemented carbide insert according to claim 1, characterized in that: the hard alloy matrix comprises the following components in percentage by weight: 9 parts of Co, 4.5 parts of TNC8, 4 parts of TiCN, 0.9 part of C, 9 parts of TaC, 5 parts of Cr3C2 and 5 parts of WC, wherein the coating comprises: TiN, Al2O3 and TiAlN 2.

4. A cemented carbide insert according to claim 1, characterized in that: the hard alloy matrix comprises the following components in percentage by weight: 10 parts of Co, 6 parts of TNC8, 5 parts of TiCN, 1 part of C, 10 parts of TaC, 6 parts of Cr3C2 and 6 parts of WC, wherein the coating comprises: TiN, Al2O3 and TiAlN 2.

5. The method of manufacturing a cemented carbide insert according to any one of claims 1-4, wherein: the method specifically comprises the following steps:

s1, weighing: respectively weighing Co, TNC8, TiCN, C, TaC, Cr3C2 and WC by using a weighing device;

s2, mixing and ball milling: mixing the Co, TNC8, TiCN, C, TaC, Cr3C2 and WC prepared in the step S1 with a forming agent, uniformly mixing the mixture by using a stirring device, and then placing the mixed mixture into a ball mill for ball milling, wherein the high-energy ball milling time is 8-10 hours;

s3, press forming: granulating the mixture prepared in the step S2 at high temperature and pressing;

s4, vacuum sintering: carrying out positive pressure degreasing on the pressed mixture in the step S3, then carrying out vacuum sintering, then carrying out partial pressure sintering, further carrying out final temperature sintering, and finally waiting for natural cooling to obtain a hard alloy matrix;

s5, CVD treatment: generating a TiN layer on the hard alloy substrate by a CVD (chemical vapor deposition) process, then depositing and generating a TiCN layer on the TiN layer, and then carrying out sand blasting treatment;

s6, deposition coating: then depositing a generated TiAlN2 layer with the thickness of 2-4 microns by adopting a magnetron sputtering or multi-arc ion plating mode;

s7, electric film coating: electroplating by using an electroplating instrument to form an Al2O3 layer on the basis of the step S6;

s8, packaging and transporting: and transporting and packaging the prepared hard alloy blade.

6. The method for manufacturing a cemented carbide insert according to claim 5, wherein: and the time for the stirring device in the step S2 to continuously stir is 5-7min, and the rotating speed of the stirring device is controlled at 60-70 r/min.

7. The method for manufacturing a cemented carbide insert according to claim 5, wherein: the ball mill in the step S2 adopts an inclined ball mill.

8. The method for manufacturing a cemented carbide insert according to claim 5, wherein: the temperature of the vacuum sintering in the step S4 is 1500-1600 ℃, the time of the positive pressure degreasing is 1-3 hours, the time of the vacuum sintering is 2-4 hours, the time of the partial pressure sintering is 2-4 hours, and the time of the final temperature sintering is 1-2 hours.

Technical Field

The invention relates to the technical field of hard alloy, in particular to a hard alloy blade and a preparation method thereof.

Background

The coated cutter blade is widely applied to machining in various industries such as automobiles, aviation, microelectronics and the like, and the machining materials comprise common metal materials such as steel, copper, aluminum and the like, and various alloys, ceramics or composite materials. During machining, there are two failure regimes for coated tools: and (4) abrasion and breakage. The tool wear is mainly abrasive wear, adhesive wear, diffusion wear, oxidation wear. Under different cutting conditions, when workpieces of different materials are processed, the main wear reasons can be one or two, generally speaking, the lower cutting temperature is mainly abrasive wear, and the higher cutting temperature is mainly diffusion wear and oxidation wear.

At present, the wear resistance of the cutter is enhanced by coating a carbide layer, a nitride layer, a carbonitride layer and an oxide coating with high hardness and wear resistance on the surface of the cutter, but the wear resistance and hardness still need to be improved, and the surface of the cutter cannot be effectively protected, so the invention provides a hard alloy blade and a preparation method thereof to solve the problems.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a hard alloy blade and a preparation method thereof, and solves the problems that the wear resistance and hardness still need to be improved and the surface of the blade cannot be effectively protected.

In order to achieve the purpose, the invention is realized by the following technical scheme: a hard alloy blade comprises a hard alloy substrate and a coating coated on the hard alloy substrate, wherein the hard alloy substrate comprises the following components in percentage by weight: 8-10 parts of Co, 3-6 parts of TNC8, 3-5 parts of TiCN, 0.8-1 part of C, 8-10 parts of TaC, 4-6 parts of Cr3C2 and 4-6 parts of WC, wherein the coating comprises: TiN, Al2O3 and TiAlN 2.

Preferably, the hard alloy matrix comprises the following components in percentage by weight: 8 parts of Co, 3 parts of TNC8, 3 parts of TiCN, 0.8 part of C, 8 parts of TaC, 4 parts of Cr3C2 and 4 parts of WC, wherein the coating comprises: TiN, Al2O3 and TiAlN 2.

Preferably, the hard alloy matrix comprises the following components in percentage by weight: 9 parts of Co, 4.5 parts of TNC8, 4 parts of TiCN, 0.9 part of C, 9 parts of TaC, 5 parts of Cr3C2 and 5 parts of WC, wherein the coating comprises: TiN, Al2O3 and TiAlN 2.

Preferably, the hard alloy matrix comprises the following components in percentage by weight: 10 parts of Co, 6 parts of TNC8, 5 parts of TiCN, 1 part of C, 10 parts of TaC, 6 parts of Cr3C2 and 6 parts of WC, wherein the coating comprises: TiN, Al2O3 and TiAlN 2.

The invention also discloses a preparation method of the hard alloy blade, which comprises the following steps:

s1, weighing: respectively weighing Co, TNC8, TiCN, C, TaC, Cr3C2 and WC by using a weighing device;

s2, mixing and ball milling: mixing the Co, TNC8, TiCN, C, TaC, Cr3C2 and WC prepared in the step S1 with a forming agent, uniformly mixing the mixture by using a stirring device, and then placing the mixed mixture into a ball mill for ball milling, wherein the high-energy ball milling time is 8-10 hours;

s3, press forming: granulating the mixture prepared in the step S2 at high temperature and pressing;

s4, vacuum sintering: carrying out positive pressure degreasing on the pressed mixture in the step S3, then carrying out vacuum sintering, then carrying out partial pressure sintering, further carrying out final temperature sintering, and finally waiting for natural cooling to obtain a hard alloy matrix;

s5, CVD treatment: generating a TiN layer on the hard alloy substrate by a CVD (chemical vapor deposition) process, then depositing and generating a TiCN layer on the TiN layer, and then carrying out sand blasting treatment;

s6, deposition coating: then depositing a generated TiAlN2 layer with the thickness of 2-4 microns by adopting a magnetron sputtering or multi-arc ion plating mode;

s7, electric film coating: electroplating by using an electroplating instrument to form an Al2O3 layer on the basis of the step S6;

s8, packaging and transporting: and transporting and packaging the prepared hard alloy blade.

Preferably, the stirring time of the stirring device in the step S2 is 5-7min, and the rotation speed of the stirring device is controlled at 60-70 r/min.

Preferably, the ball mill in the step S2 is an inclined ball mill.

Preferably, the temperature of the vacuum sintering in the step S4 is 1500-.

Advantageous effects

The invention provides a hard alloy blade and a preparation method thereof. Compared with the prior art, the method has the following beneficial effects:

the hard alloy blade and the preparation method thereof comprise the following components in the hard alloy matrix: 8-10 parts of Co, 3-6 parts of TNC8, 3-5 parts of TiCN, 0.8-1 part of C, 8-10 parts of TaC, 4-6 parts of Cr3C2 and 4-6 parts of WC, wherein the coating comprises: TiN, Al2O3, TiAlN2, S1, and weight: respectively weighing Co, TNC8, TiCN, C, TaC, Cr3C2 and WC by using a weighing device; s2, mixing and ball milling: mixing the Co, TNC8, TiCN, C, TaC, Cr3C2 and WC prepared in the step S1 with a forming agent, uniformly mixing the mixture by using a stirring device, and then placing the mixed mixture into a ball mill for ball milling, wherein the high-energy ball milling time is 8-10 hours; s3, press forming: granulating the mixture prepared in the step S2 at high temperature and pressing; s4, vacuum sintering: carrying out positive pressure degreasing on the pressed mixture in the step S3, then carrying out vacuum sintering, then carrying out partial pressure sintering, further carrying out final temperature sintering, and finally waiting for natural cooling to obtain a hard alloy matrix; s5, CVD treatment: generating a TiN layer on the hard alloy substrate by a CVD (chemical vapor deposition) process, then depositing and generating a TiCN layer on the TiN layer, and then carrying out sand blasting treatment; s6, deposition coating: then depositing a generated TiAlN2 layer with the thickness of 2-4 microns by adopting a magnetron sputtering or multi-arc ion plating mode; s7, electric film coating: electroplating by using an electroplating instrument to form an Al2O3 layer on the basis of the step S6; s8, packaging and transporting: the prepared hard alloy blade is transported and packaged, the toughness of the alloy is improved by adding TaC, the processed blade is higher in toughness and not easy to break, the integral wear resistance of the blade is obviously improved by adding Cr3C2, the wear resistance and hardness of the blade prepared by the whole preparation method are obviously improved compared with those of the existing blade, and the blade can be stably protected on the surface by arranging TiN, Al2O3 and TiAlN2 and is not easy to corrode.

Drawings

FIG. 1 is a flow chart of a process for making a cemented carbide insert according to the present invention;

FIG. 2 is a table comparing a commercial cemented carbide insert according to the present invention with an example;

FIG. 3 is a comparative table of examples 1 to 3 of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the embodiment of the present invention provides three technical solutions: a hard alloy blade and a preparation method thereof specifically comprise the following embodiments:

example 1

S1, weighing: 8 parts of Co, 3 parts of TNC8, 3 parts of TiCN, 0.8 part of C, 8 parts of TaC, 4 parts of Cr3C2 and 4 parts of WC;

s2, mixing and ball milling: mixing the Co, TNC8, TiCN, C, TaC, Cr3C2 and WC prepared in the step S1 with a forming agent, uniformly mixing the mixture by using a stirring device, and then placing the mixed mixture into a ball mill for ball milling, wherein the high-energy ball milling time is 8 hours;

s3, press forming: granulating the mixture prepared in the step S2 at high temperature and pressing;

s4, vacuum sintering: carrying out positive pressure degreasing on the pressed mixture in the step S3, then carrying out vacuum sintering, then carrying out partial pressure sintering, further carrying out final temperature sintering, and finally waiting for natural cooling to obtain a hard alloy matrix;

s5, CVD treatment: generating a TiN layer on the hard alloy substrate by a CVD (chemical vapor deposition) process, then depositing and generating a TiCN layer on the TiN layer, and then carrying out sand blasting treatment;

s6, deposition coating: then depositing a generated TiAlN2 layer with the thickness of 2 microns by adopting a magnetron sputtering or multi-arc ion plating mode;

s7, electric film coating: electroplating by using an electroplating instrument to form an Al2O3 layer on the basis of the step S6;

s8, packaging and transporting: and transporting and packaging the prepared hard alloy blade.

In the embodiment of the invention, the time for the stirring device to continuously stir in the step S2 is 5min, and the rotating speed of the stirring device is controlled at 60r/min

In the embodiment of the present invention, the ball mill in the step S2 is an inclined ball mill.

In the embodiment of the present invention, the temperature of the vacuum sintering in step S4 is 1500 degrees celsius, the time of the positive pressure degreasing is 1 hour, the vacuum sintering time is 2 hours, the partial pressure sintering time is 2 hours, and the final temperature sintering time is 1 hour.

Example 2

S1, weighing: 9 parts of Co, 4.5 parts of TNC8, 4 parts of TiCN, 0.9 part of C, 9 parts of TaC, 5 parts of Cr3C2 and 5 parts of WC;

s2, mixing and ball milling: mixing the Co, TNC8, TiCN, C, TaC, Cr3C2 and WC prepared in the step S1 with a forming agent, uniformly mixing the mixture by using a stirring device, and then placing the mixed mixture into a ball mill for ball milling, wherein the high-energy ball milling time is 9 hours;

s3, press forming: granulating the mixture prepared in the step S2 at high temperature and pressing;

s4, vacuum sintering: carrying out positive pressure degreasing on the pressed mixture in the step S3, then carrying out vacuum sintering, then carrying out partial pressure sintering, further carrying out final temperature sintering, and finally waiting for natural cooling to obtain a hard alloy matrix;

s5, CVD treatment: generating a TiN layer on the hard alloy substrate by a CVD (chemical vapor deposition) process, then depositing and generating a TiCN layer on the TiN layer, and then carrying out sand blasting treatment;

s6, deposition coating: then depositing a generated TiAlN2 layer with the thickness of 3 microns by adopting a magnetron sputtering or multi-arc ion plating mode;

s7, electric film coating: electroplating by using an electroplating instrument to form an Al2O3 layer on the basis of the step S6;

s8, packaging and transporting: and transporting and packaging the prepared hard alloy blade.

In the embodiment of the invention, the time for the stirring device to continuously stir in the step S2 is 6min, and the rotation speed of the stirring device is controlled at 65 r/min.

In the embodiment of the present invention, the ball mill in the step S2 is an inclined ball mill.

In the embodiment of the present invention, the temperature of the vacuum sintering in step S4 is 1550 ℃, the time of the positive pressure degreasing is 2 hours, the vacuum sintering time is 3 hours, the partial pressure sintering time is 3 hours, and the final temperature sintering time is 1.5 hours.

Example 3

S1, weighing: 10 parts of Co, 6 parts of TNC8, 5 parts of TiCN, 1 part of C, 10 parts of TaC, 6 parts of Cr3C2 and 6 parts of WC;

s2, mixing and ball milling: mixing the Co, TNC8, TiCN, C, TaC, Cr3C2 and WC prepared in the step S1 with a forming agent, uniformly mixing the mixture by using a stirring device, and then placing the mixed mixture into a ball mill for ball milling, wherein the high-energy ball milling time is 10 hours;

s3, press forming: granulating the mixture prepared in the step S2 at high temperature and pressing;

s4, vacuum sintering: carrying out positive pressure degreasing on the pressed mixture in the step S3, then carrying out vacuum sintering, then carrying out partial pressure sintering, further carrying out final temperature sintering, and finally waiting for natural cooling to obtain a hard alloy matrix;

s5, CVD treatment: generating a TiN layer on the hard alloy substrate by a CVD (chemical vapor deposition) process, then depositing and generating a TiCN layer on the TiN layer, and then carrying out sand blasting treatment;

s6, deposition coating: then depositing a generated TiAlN2 layer with the thickness of 4 microns by adopting a magnetron sputtering or multi-arc ion plating mode;

s7, electric film coating: electroplating by using an electroplating instrument to form an Al2O3 layer on the basis of the step S6;

s8, packaging and transporting: and transporting and packaging the prepared hard alloy blade.

In the embodiment of the invention, the time for the stirring device to continuously stir in the step S2 is 7min, and the rotating speed of the stirring device is controlled at 70r/min

In the embodiment of the present invention, the ball mill in the step S2 is an inclined ball mill.

In the embodiment of the present invention, the temperature of the vacuum sintering in step S4 is 1600 ℃, the time of the positive pressure degreasing is 3 hours, the vacuum sintering time is 4 hours, the partial pressure sintering time is 4 hours, and the final temperature sintering time is 2 hours.

Comparative experiment

A hard alloy blade manufacturer respectively selects the hard alloy blades prepared by the preparation processes in the embodiments 1 to 3 and the hard alloy blades on the market to carry out hardness and wear resistance comparison experiments, and as can be seen from fig. 2, the hard alloy blades prepared by the preparation processes in the embodiments 1 to 3 have the hardness of 0.94, the wear resistance coefficient of 0.85, the hard alloy blades on the market have the hardness of 0.80 and the wear resistance coefficient of 0.6, so that the hardness and the wear resistance coefficient of the hard alloy blades prepared by the invention are far superior to those of the hard alloy blades on the market, and as can be seen from fig. 3, the hard alloy blades prepared by the embodiment 2 have the highest hardness and wear resistance coefficient and are the preferred scheme; the other two are acceptable.

And those not described in detail in this specification are well within the skill of those in the art.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.