CN114769638A - Cemented carbide or cermet indexable insert and preparation method thereof - Google Patents
Cemented carbide or cermet indexable insert and preparation method thereof Download PDFInfo
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- CN114769638A CN114769638A CN202210529877.4A CN202210529877A CN114769638A CN 114769638 A CN114769638 A CN 114769638A CN 202210529877 A CN202210529877 A CN 202210529877A CN 114769638 A CN114769638 A CN 114769638A
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- 239000011195 cermet Substances 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title description 7
- 238000012966 insertion method Methods 0.000 title description 2
- 238000005520 cutting process Methods 0.000 claims abstract description 47
- 239000000956 alloy Substances 0.000 claims abstract description 37
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 34
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000010941 cobalt Substances 0.000 claims abstract description 16
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 229910000531 Co alloy Inorganic materials 0.000 claims abstract description 5
- 229910000990 Ni alloy Inorganic materials 0.000 claims abstract description 5
- 238000005275 alloying Methods 0.000 claims abstract description 5
- 229910000640 Fe alloy Inorganic materials 0.000 claims abstract 2
- 238000005245 sintering Methods 0.000 claims description 33
- 229910017052 cobalt Inorganic materials 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 13
- 229910052759 nickel Inorganic materials 0.000 claims description 12
- 238000004140 cleaning Methods 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 abstract description 12
- 239000002184 metal Substances 0.000 abstract description 12
- 239000000919 ceramic Substances 0.000 abstract description 11
- 239000000758 substrate Substances 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 81
- 239000011230 binding agent Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 239000012071 phase Substances 0.000 description 6
- 238000003466 welding Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000012790 adhesive layer Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
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- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1035—Liquid phase sintering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
- B22F7/064—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts using an intermediate powder layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
- B23B2222/16—Cermet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
- B23B2222/28—Details of hard metal, i.e. cemented carbide
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention belongs to the field of indexable inserts, and particularly relates to a cemented carbide or cermet indexable insert which is bonded in a multilayer structure; at least comprises the following steps: upper and lower indexable insert cutting layers and an intermediate bonding layer; wherein, the components of the cutting layers of the upper and lower indexable inserts are the same and are made of hard alloy or metal ceramic. The upper and lower indexable blade cutting layer indexable blade substrate layers are bonded through the bonding layer, so that the upper and lower layers are integrated; the bonding layer is made of cobalt, nickel and iron alloy. Preferably, the cutting insert is prepared by mixing alloying elements containing the components contained in the alloying components of the upper and lower cutting layers. The hard alloy integrates the upper layer and the lower layer by adjusting the structure of the indexable insert and bonding the cutting layers of the upper indexable insert and the lower indexable insert through the bonding layer, and the bonding strength between the upper layer and the bonding layer, the high-temperature performance, the service performance and the production cost are high by adjusting the components of the bonding layer.
Description
Technical Field
The invention relates to the field of cutting tool materials, in particular to a hard alloy or metal ceramic indexable insert and a preparation method thereof.
Background
In the production of the traditional cemented carbide or cermet indexable insert, a blank is generally formed by a two-way press, and the blank is ground and processed after sintering to achieve the final required shape and precision; but for some indexable inserts with complicated shapes, the groove shape of which is not in the same direction as the assembly hole, a rough blank can be formed only by a press, and the subsequent machining allowance is large, the time is long, and the abrasion loss of the grinding wheel is large. Resulting in a significant increase in processing costs. Or a multidirectional electric control press with a complex structure and control program is used for molding, but the equipment is complex and expensive, the mold cost is high, and the production efficiency is low.
In order to solve the problems, the indexable insert can also be designed into an upper part and a lower part which are connected by welding. But the welding strength is low, generally about 300 MPa; the welding layer has low melting point and can not resist high temperature, and can be melted at about 800 ℃. Therefore, the high temperature resistance is poor, the service performance is unstable, and the service life is short.
CN104874797A discloses a hard alloy, in which additives are mixed with different alloy raw materials to obtain different mixed materials; the integral hard alloy is arranged in a gradient manner by pressing the mixture, and the alloy does not consider the processing mode of the cutting blade and is not suitable for multi-directional processing of the indexable cutting blade with a complex shape.
CN108530956B A cemented carbide sintering anti-sticking coating bonded by organic and inorganic compound adhesives, and a preparation method and a use method thereof, wherein the coating comprises a solid isolation layer and a liquid adhesive, and the stability of the cemented carbide sintering anti-sticking coating is improved. The structure is not suitable for the indexable insert, and the problem of forming and processing at different angles is not considered.
Therefore, the development of the hard alloy or metal ceramic indexable insert with the groove shape not in the same direction as the assembly hole and the complex shape has great significance for developing materials with lower production cost, high efficiency, high strength and good high-temperature performance.
Disclosure of Invention
The invention aims at the defects, and provides the hard alloy for the indexable insert, which integrates the upper layer and the lower layer by bonding the cutting layers of the upper indexable insert and the lower indexable insert through the bonding layer through adjusting the structure of the indexable insert, and ensures that the bonding strength between the upper layer and the bonding layer, the lower layer and the bonding layer are high, the high-temperature performance is good, and the service performance is reliable through adjusting the components of the bonding layer.
The cemented carbide or cermet indexable insert and the preparation method thereof of the invention are realized by the following technical proposal:
discloses a hard alloy or metal ceramic indexable insert, wherein the hard alloy is bonded in a multilayer structure; at least comprises the following steps:
upper and lower indexable insert cutting layers;
wherein, the upper surface cutting layer and the lower surface indexable blade substrate layer are bonded through the bonding layer, so that the upper layer and the lower layer are integrated;
the bonding layer is prepared by proportioning alloy elements containing components contained in the alloy components of the cutting layers of the upper and lower indexable inserts.
The invention abandons the inherent technical thinking that two layers of materials are welded in the prior art, the upper and lower indexable insert cutting layers are bonded through the bonding layer, and because the components of the bonding layer and the alloy components of the upper and lower layers have cross elements, the intermolecular diffusion and compatibility of the materials are better at the joint of the two layers, so that the bonding of the upper and lower layers is firm, the high temperature performance is good, and the service performance is reliable.
Further, the upper surface cutting layer is made of hard alloy or metal ceramic.
Further, the lower surface indexable insert substrate layer is made of hard alloy or metal ceramic.
Further, the bonding layer is made of cobalt, nickel, iron or other alloys.
Further, the thickness of the bonding layer is 1-5 mm.
The invention also discloses a preparation method of the cemented carbide or cermet indexable insert, which comprises the following steps:
s1, partitioning the prepared hard alloy or metal ceramic indexable blade and cleaning a bonding layer to obtain a clean bonding surface;
s2, selecting cutting layers of an upper indexable insert and a lower indexable insert, and placing a bonding layer between the upper indexable insert and the lower indexable insert;
s3, performing high-temperature treatment in a sintering furnace, and bonding together through alloying to obtain an indexable insert, wherein the sintering temperature is 1300-1600 ℃; the sintering time is 0.5 to 5 hours, and vacuum sintering or pressure sintering, preferably pressure sintering, can be used in order to obtain lower porosity.
The adjustment of the composition of the adhesive layer needs to meet the following conditions: the components of the bonding layer are similar to those of the cutting layers of the upper and lower indexable inserts, and the content of the binder phase is larger than that of the binders of the cutting layers of the upper and lower indexable inserts, for example, the content of cobalt in the bonding layer is 1-2.5 times larger than that of cobalt in the cutting layers of the upper and lower indexable inserts. The proportion not only can effectively adhere the cutting layers of the upper and lower indexable inserts, but also has better molecular diffusion performance among the same component elements. The bonding layer of the invention is equivalent to bonding the cutting layers of the upper and lower indexable inserts according to the composition adjustment of the cutting layers, and the cutting layers of the upper and lower indexable inserts are designed to have the same composition for the consideration of the service performance of the inserts. The cutting insert is made to be used consistently.
Further, when the cutting layers of the upper and lower indexable inserts are made of hard alloy, the bonding layer is made of cobalt alloy, and the mass fraction of cobalt in the bonding layer is greater than that of cobalt in the hard alloy.
Furthermore, the content of the cobalt element in the bonding layer is 1-2.5 times larger than that of the cobalt element in the cutting layers of the upper and lower indexable inserts.
Furthermore, when the cutting layers of the upper and lower indexable inserts are both made of cermet, the bonding layer is made of a nickel alloy material. And the mass fraction content of the nickel element in the bonding layer is greater than that of the nickel element in the metal ceramic.
Furthermore, the content of the nickel element of the bonding layer is 1-1.25 times larger than that of the nickel element of the cutting layers of the upper and lower indexable inserts.
Further, the pressure of the pressure sintering is not lower than 0.5 MPa.
Compared with the prior art, the invention has the following beneficial effects:
the hard alloy or metal ceramic indexable insert of the invention combines the structural characteristics of the indexable insert according to the performance of the material components of the upper surface cutting layer and the lower surface indexable insert substrate layer, provides a bonding layer which can effectively combine the upper surface cutting layer and the lower surface indexable insert cutting layer, the components of the bonding layer select the element components with good compatibility and diffusion performance with the upper surface cutting layer and the lower surface indexable insert substrate layer, and the diffusion and compatibility among the material molecules are better at the joint of the two layers, so that the upper layer and the lower layer are firmly bonded, the high temperature performance is good, and the service performance is reliable.
The invention provides a technical idea for bonding the cutting layers of an upper indexable insert and a lower indexable insert by using bonding sheets, breaks through the problem that the cemented carbide or the cermet is bonded by using glue or a liquid bonding agent in the prior art, and particularly provides an alloy structure which is suitable for multi-angle forming in the processing of special-shaped inserts. The processing cost can be effectively reduced.
The difference of alloy component performance between the bonding layers of the cemented carbide or cermet indexable insert of the invention uses a sintering furnace for high-temperature treatment to alloy and bond the bonding part of each layer of metal, so that each layer of cemented carbide is integrated, which is beneficial to the processing of the indexable insert.
The invention discloses a preparation method of a hard alloy or metal ceramic indexable insert, which enables the whole hard alloy to achieve the excellent service performance of the indexable insert by adjusting various parameters.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a cutting layer on the upper surface of a cemented carbide or cermet indexable insert according to the present invention.
Fig. 2 is a cemented carbide or cermet indexable insert bonding layer according to the present invention.
Fig. 3 shows a cutting layer on the lower surface of the cemented carbide or cermet indexable insert according to the present invention.
Fig. 4 is a composite schematic view of a cemented carbide or cermet indexable insert according to the present invention.
Fig. 5 is a diagram of a composite product of cemented carbide or cermet indexable inserts according to the present invention.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
Example 1
As shown in fig. 1 to 3, the indexable insert is divided into three along the middle position one, into an upper indexable insert cutting layer segment 1, a lower indexable insert cutting layer 2 and an adhesive layer 3. The cutting layer of the upper and lower indexable inserts is made of hard alloy, the hard alloy generally adopts cobalt as a binder phase component, the binder layer component is cobalt alloy, and the alloy elements preferably adopt components contained in the upper and lower layers. The thickness of the adhesive layer is 1 to 5mm, preferably 3mm in the present embodiment.
And respectively producing a blank of a cutting layer and a bonding layer of the sintering indexable insert which are divided into an upper block and a lower block according to the traditional powder metallurgy production method. The specific components and the production method are well known in the art, for example, the YG8 component is 8wt% of cobalt and 92wt% of tungsten carbide, and is produced by the steps of burdening → ball milling → spray drying → pressing → sintering → grinding and the like. And cleaning the bonded three layers to ensure that the bonded surface is clean. The cleaning mode can adopt common methods such as hydrocarbon cleaning, ultrasonic cleaning, wet sand blasting and the like. Meanwhile, in order to ensure the flatness and surface smoothness of each bonding surface, the bonding surface can be processed by plane grinding.
In the position shown in fig. 4, the assembly is fixed in a "sandwich configuration". In order to ensure the required form and position tolerance of the product, the product is positioned and fixed by a specific limiting clamp in the assembling process, and the subsequent movement in the transferring and sintering processes is prevented.
The indexable inserts were obtained by alloying and bonding them together in a sintering furnace at high temperature, as shown in fig. 3. In order to improve the bonding effect, a certain liquid phase needs to be formed in the bonding sheet, the sintering temperature is 1300-1600 ℃, the sintering time is 0.5-5 hours, the sintering temperature in the implementation is 1300-1400 ℃, and the sintering time is 3-4 hours. Vacuum sintering or pressure sintering may be employed. Pressure sintering is preferably adopted to reduce the formation of pores and improve the bonding strength.
And then, the fine machining can be carried out according to the requirement so as to ensure the dimensional precision and the required smoothness. And wet blasting, edge passivation, coating, etc., as is known in the art.
Example 2
In the embodiment, the upper and lower indexable inserts are divided into blocks and made of cermet, nickel is generally selected as a bonding phase component, the bonding layer component is a nickel alloy, and alloy elements are preferably selected from components contained in the upper and lower layers.
Example 2 the same procedure as in example 1 was followed. The difference is that the sintering temperature is 1500-1600 ℃, and the sintering time is 1.5-2.5 hours. The specific components and production methods are well known in the art.
Comparative example 1
The following are experimental results using the present invention and comparative examples. Samples 1 and 3 are indexable according to the invention in examples 1 and 2. Samples 2 and 4 are comparative with the center bonding pad eliminated.
The method for preparing the indexable insert is adopted. Standard bending strength test bars were prepared. And sequentially carrying out operations such as cleaning, assembling, fixing, high-temperature treatment and the like. Wherein the sintering temperature is 1450 ℃ and the pressure is 5 MPa. The results of measuring the bending strength are shown in table 1 below.
Meanwhile, the invention still has higher bonding strength at 1000 ℃, and the welding method can be melted at about 800 ℃.
The bonding sheet forms more liquid phase at the sintering temperature, can well bond the upper and lower indexable insert blocks, and has higher bonding strength. After the bonding sheet is eliminated, the bonding phase components of the hard alloy and metal ceramic indexable insert are less, so that the liquid phase quantity is obviously reduced, the bonding effect is poor, and even the phenomenon of non-bonding occurs. The invention has the characteristics of simple equipment, high bonding strength, high temperature resistance, low production cost, high production efficiency and the like.
TABLE 1
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. The indexable insert is characterized in that the indexable insert is bonded in a multilayer structure; at least comprises the following steps:
upper and lower indexable insert cutting layers;
wherein, the cutting layers of the upper and lower indexable inserts are bonded by the bonding layer to form an integral body;
the bonding layer is prepared by proportioning alloy elements containing components contained in the alloy components of the cutting layers of the upper and lower indexable inserts.
2. The cemented carbide or cermet indexable insert of claim 1 wherein the bonding layer comprises at least one of cobalt, nickel, iron alloy.
3. Cemented carbide or cermet indexable insert according to claim 2, characterized in that the thickness of the bonding layer is 1-5 mm.
4. A method of making a cemented carbide or cermet indexable insert according to any one of claims 1-3 comprising the steps of:
s1, cleaning prepared hard alloy or cermet indexable blade blocks and a bonding layer to obtain a clean bonding surface;
s2, selecting cutting layers of an upper indexable insert and a lower indexable insert, and placing a bonding layer between the upper indexable insert and the lower indexable insert;
s3, performing high-temperature treatment in a sintering furnace, and bonding together through alloying to obtain the indexable insert, wherein the sintering temperature is 1300-1600 ℃; the sintering time is 0.5-5 hours, and the sintering adopts vacuum sintering or pressure sintering.
5. The method for manufacturing the cemented carbide or cermet indexable insert according to claim 4 wherein when the cutting layers of the upper and lower indexable inserts are both cemented carbide, the bonding layer is made of cobalt alloy material and the mass fraction of cobalt element in the bonding layer is greater than the mass fraction of cobalt element in the cemented carbide.
6. The method of claim 5, wherein the cobalt content of the bonding layer is 1 to 2.5 times greater than the cobalt content of the cutting layers of the upper and lower indexable inserts.
7. The method of claim 4, wherein when the cutting layers of the upper and lower indexable inserts are made of cermet, the bonding layer is made of a nickel alloy material, and the content of the nickel element in the bonding layer is greater than the content of the nickel element in the cermet.
8. The method for manufacturing the cemented carbide or cermet indexable insert plate as claimed in claim 7, wherein the content of the nickel element in the bonding layer is 1 to 1.25 times greater than the content of the nickel element in the cutting layers of the upper and lower indexable insert plates.
9. The method of claim 4, wherein the pressure sintering is performed at a pressure of not less than 0.5 MPa.
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| CN202210529877.4A CN114769638A (en) | 2022-05-16 | 2022-05-16 | Cemented carbide or cermet indexable insert and preparation method thereof |
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| CN202210529877.4A CN114769638A (en) | 2022-05-16 | 2022-05-16 | Cemented carbide or cermet indexable insert and preparation method thereof |
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| CN107107204A (en) * | 2014-12-25 | 2017-08-29 | 三菱综合材料株式会社 | Composite sinter cutting element and Surface coating composite sinter cutting element |
| CN211638354U (en) * | 2020-02-25 | 2020-10-09 | 株洲肯特硬质合金有限公司 | Indexable disc cutter for machining train hubs |
| CN113174524A (en) * | 2021-04-07 | 2021-07-27 | 株洲肯特硬质合金有限公司 | Hard alloy cutter material for high-speed milling and manufacturing method thereof |
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2022
- 2022-05-16 CN CN202210529877.4A patent/CN114769638A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104563889A (en) * | 2013-11-25 | 2015-04-29 | 莱州市原野科技有限公司 | Pre-graphitized polycrystalline diamond compact |
| CN107107204A (en) * | 2014-12-25 | 2017-08-29 | 三菱综合材料株式会社 | Composite sinter cutting element and Surface coating composite sinter cutting element |
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| CN211638354U (en) * | 2020-02-25 | 2020-10-09 | 株洲肯特硬质合金有限公司 | Indexable disc cutter for machining train hubs |
| CN113174524A (en) * | 2021-04-07 | 2021-07-27 | 株洲肯特硬质合金有限公司 | Hard alloy cutter material for high-speed milling and manufacturing method thereof |
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