CN113681004B - A method for preparing high-cost-effective fine slices and fine slices - Google Patents

A method for preparing high-cost-effective fine slices and fine slices Download PDF

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CN113681004B
CN113681004B CN202110911700.6A CN202110911700A CN113681004B CN 113681004 B CN113681004 B CN 113681004B CN 202110911700 A CN202110911700 A CN 202110911700A CN 113681004 B CN113681004 B CN 113681004B
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layer
blank
fine
slice
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CN113681004A (en
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曾柳
李世进
张智
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Quanzhou Zhongzhi New Material Technology Co ltd
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Quanzhou Zhongzhi New Material Technology Co ltd
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    • 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
    • B22F7/02—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 layers
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

本发明公开了一种高性价比精切片的制备方法及精切片，所制成的精切片能够兼顾到切边质量和切割速度，使用寿命长、整个生产成本较低，性价比高，市场前景广大；本发明精切片摒弃了现有精切片的单层结构，创新的采用了三层坯体结构，该三层坯体结构为边层压坯+中间层压坯+边层压坯模式构成；且边层压坯中金刚石粒度较细，保证了切割时切边齐整，提高切边质量；中间层压坯中金刚石较粗，保证了切割时锋利，走速快；由于粒度细浓度低也能大幅度降低成本，这样既能保持锋利度的同时又能保持很好的切边质量；而且，在两种压坯的特定原料和特定配比基础上，制成三层坯体结构，解决了刀头的切片质量、切割性能、使用寿命和刀头成本等多方面问题。

The invention discloses a preparation method and a fine slice with high cost performance ratio. The fine slice prepared can take into account both the edge cutting quality and the cutting speed, has a long service life, a low overall production cost, a high cost performance ratio and a broad market prospect. The fine slice of the invention abandons the single-layer structure of the existing fine slice and innovatively adopts a three-layer blank structure, which is composed of an edge layer pressed blank + an intermediate layer pressed blank + an edge layer pressed blank mode. The diamond grain size in the edge layer pressed blank is finer, which ensures that the edge cutting is neat during cutting and improves the edge cutting quality. The diamond in the intermediate layer pressed blank is coarser, which ensures that the edge cutting is sharp and the speed is fast during cutting. The fine grain size and low concentration can also greatly reduce the cost, so that both the sharpness and the good edge cutting quality can be maintained. Moreover, based on the specific raw materials and specific ratios of the two pressed blanks, the three-layer blank structure is prepared, which solves the problems of the slicing quality, cutting performance, service life and cost of the cutter head.

Description

Preparation method of high-cost-performance fine slice and fine slice
Technical Field
The invention relates to the field of diamond cutter preparation, in particular to a preparation method of a high-cost-performance fine slice and the fine slice.
Background
In the current market, diamond chips are widely applied to cutting processing of hard and brittle nonmetallic materials such as marble, concrete, granite, ceramics, glass and the like; the fine slice is one kind of diamond saw blade and mainly consists of a diamond tool bit and a matrix; the diamond tool bit is mainly used for cutting materials in the use process, and the matrix mainly supports the cutting work of the diamond tool bit; the diamond saw blade can process a plurality of objects, and the fine cutting blade is mainly used for processing materials with high requirements on cutting edge quality, such as artificial stone, marble, ceramic tile and the like; many fine sections are difficult to consider, the trimming quality is good, the cutting speed is high, the service life and the cost are low, and the cost performance of the saw blade is low.
In view of the above, the present inventors have developed and designed the present invention by intensively conceived aiming at many defects and inconveniences caused by the above-mentioned fine slice preparation method and imperfect structural design, and actively studied and improved trial works.
Disclosure of Invention
The invention aims to provide a preparation method of a high-cost-performance fine slice and the fine slice, and the prepared fine slice can be used for considering the trimming quality and the cutting speed, and has the advantages of long service life, lower whole production cost, high cost performance and wide market prospect.
In order to achieve the above object, the solution of the present invention is:
the preparation method of the high-cost-performance fine slice comprises the following steps of:
S1, preparing a carcass material: respectively weighing 15-30% of Fe-Cu-Sn-Co prealloy powder, 25-40% of Cu-Sn prealloy powder and 30-50% of Fe-Cu-Sn-Ni prealloy powder according to weight percentage, and uniformly mixing to obtain a matrix material;
s2, preparing a diamond material: a. edge layer diamond material: is formed by evenly mixing diamond with the granularity of 70/80-100/120; b. intermediate layer diamond material: is formed by evenly mixing diamond with the granularity of 45/50-70/80;
S3, preparing a side layer blank and an intermediate layer blank: a. weighing 75% -95% of matrix material and 5% -25% of boundary layer diamond material according to weight percentage, and uniformly mixing; b. weighing 75% -95% of matrix material and 5% -25% of middle layer diamond material according to weight percentage, and uniformly mixing;
S4, preparing a cutter head: a. respectively pressing and forming an edge layer blank and an intermediate layer blank by a cold pressing mode; b. sequentially loading the green compacts into a graphite die according to the three-layer structure of 'side layer green compact + middle layer green compact + side layer green compact', and performing hot-pressing sintering to obtain a fine slicing cutter head;
and S5, welding the fine slicing tool bit obtained in the step S4 on a substrate, and shaping, polishing and sharpening to obtain the fine slice.
In the step S3, when the side layer blanks are mixed, adding liquid paraffin according to the proportion of 5-10ml/kg, and mixing for 2-3 hours by a mixer; when the intermediate layer blank is mixed, liquid paraffin in the proportion of 5-10ml/kg is added, and the mixture is mixed for 2-3 hours by a mixer.
In step S4, the pressure used for cold press molding is 2.5-3.0t/cm 2.
In the step S4, the graphite mold is subjected to hot-pressing sintering in a hot-pressing sintering machine, wherein the sintering temperature is 700-800 ℃, the sintering pressure is 350-400kg/cm 2, and the sintering heat preservation time is 1.5-2.5 minutes.
Thickness of the side laminated blank: thickness of intermediate layer compact = 1:1.5-2.5.
Thickness of the side laminated blank: thickness of the intermediate layer compact=1:1.8.
The Fe-Cu-Sn-Co pre-alloy powder comprises the following components in percentage by weight: 55-65% of Fe, 10-20% of Cu, 2-10% of Sn and 10-25% of Co.
The Cu-Sn prealloy powder comprises the following components in percentage by weight: 80-90% of Cu and 10-20% of Sn.
The Fe-Cu-Sn-Ni pre-alloy powder comprises the following components in percentage by weight: 40-50% of Fe, 35-45% of Cu, 2-8% of Sn and 2-10% of Ni.
The powder particle size of the Fe-Cu-Sn-Co pre-alloy powder, the Cu-Sn pre-alloy powder and the Fe-Cu-Sn-Ni pre-alloy powder is 200-400 meshes.
In the step S5, the substrate is made of a material with the diameter of 350mm and 65Mn and 25 teeth.
In step S5, the fine slicing tool bit and the substrate are welded together by high frequency induction using silver soldering tabs.
The fine slice is prepared by the preparation method of the high-cost-performance fine slice.
By adopting the structure, the preparation method of the high-cost-performance fine slice and the fine slice can ensure that the prepared fine slice has the advantages of both trimming quality and cutting speed, long service life, lower whole production cost, high cost performance and wide market prospect; and compared with the prior art, the beneficial effects are as follows: the finished slice manufactured by the invention abandons the single-layer structure of the existing finished slice, and innovatively adopts a three-layer blank structure which is formed by laminating blanks, middle-layer blanks and blank laminating modes; the diamond granularity in the edge laminated blank is finer, so that trimming is ensured to be neat during cutting, and the trimming quality is improved; the diamond in the middle layer pressed compact is thicker, so that sharpness in cutting is ensured, and the travelling speed is high; the fine granularity and low concentration can greatly reduce the cost, so that the sharpness can be maintained and the good trimming quality can be maintained; and on the basis of specific raw materials and specific mixture ratio of the two kinds of pressed billets, a three-layer green body structure is manufactured, so that the problems of slicing quality, cutting performance, service life, cutter head cost and the like of the cutter head are solved.
Drawings
FIG. 1 is a schematic cross-sectional view of a fine slicing knife head of the present invention.
Symbol description
Side laminated blank 1 middle layer pressed blank 2
Diamonds 10, 20.
Detailed Description
In order to further explain the technical scheme of the invention, the invention is explained in detail by specific examples.
The invention discloses a preparation method of a high-cost-performance fine slice, which comprises the following steps of:
S1, preparing a carcass material: respectively weighing 15-30% of Fe-Cu-Sn-Co prealloy powder, 25-40% of Cu-Sn prealloy powder and 30-50% of Fe-Cu-Sn-Ni prealloy powder according to weight percentage, and uniformly mixing to obtain a matrix material;
S2, preparing a diamond material: a. edge layer diamond material 10: is formed by evenly mixing diamond with the granularity of 70/80-100/120; b. intermediate layer diamond material 20: is formed by evenly mixing diamond with the granularity of 45/50-70/80;
S3, preparing a side layer blank and an intermediate layer blank: a. weighing 75% -95% of matrix material and 5% -25% of boundary layer diamond material according to weight percentage, and uniformly mixing; b. weighing 75% -95% of matrix material and 5% -25% of middle layer diamond material according to weight percentage, and uniformly mixing;
S4, preparing a cutter head: a. the side layer blank and the middle layer blank are respectively pressed into a side layer pressed blank 1 and a middle layer pressed blank 2 in a cold pressing mode; b. sequentially loading the green compacts into a graphite die according to the three-layer structure sequence of 'side layer green compact + middle layer green compact + side layer green compact', and performing hot-pressing sintering to obtain a fine slicing cutter head (see figure 1);
and S5, welding the fine slicing tool bit obtained in the step S4 on a substrate, and shaping, polishing and sharpening to obtain the fine slice.
According to the preparation method of the high-cost-performance fine slice and the fine slice, the prepared fine slice can be used for considering the trimming quality and the cutting speed, and has the advantages of long service life, lower whole production cost, high cost performance and wide market prospect; and compared with the prior art, the beneficial effects are as follows: the finished slice manufactured by the invention abandons the single-layer structure of the existing finished slice, and innovatively adopts a three-layer blank structure which is formed by laminating blanks, middle-layer blanks and blank laminating modes; the diamond granularity in the edge laminated blank is finer, so that trimming is ensured to be neat during cutting, and the trimming quality is improved; the diamond in the middle layer pressed compact is thicker, so that sharpness in cutting is ensured, and the travelling speed is high; the fine granularity and low concentration can greatly reduce the cost, so that the sharpness can be maintained and the good trimming quality can be maintained; and on the basis of specific raw materials and specific mixture ratio of the two kinds of pressed billets, a three-layer green body structure is manufactured, so that the problems of slicing quality, cutting performance, service life, cutter head cost and the like of the cutter head are solved.
In the step S3, when the side layer blanks are mixed, liquid paraffin according to the proportion of 5-10ml/kg is added, and the mixture is mixed for 2-3 hours by a mixer; when the intermediate layer blank is mixed, liquid paraffin in the proportion of 5-10ml/kg is added, and the mixture is mixed for 2-3 hours by a mixer.
In the step S4, the pressure used for cold press molding is 2.5-3.0t/cm 2.
In the step S4, the graphite mold is subjected to hot-pressing sintering in a hot-pressing sintering machine, the sintering temperature is 700-800 ℃, the sintering pressure is 350-400kg/cm 2, and the sintering heat preservation time is 1.5-2.5 minutes.
Thickness of the edge laminate 1 of the present invention: thickness of intermediate layer compact 2 = 1:1.5-2.5.
Thickness of the edge laminate 1 of the present invention: thickness of the intermediate layer compact 2=1:1.8.
On the basis of specific raw materials and specific proportions of the side laminated blank 1 and the middle layer laminated blank 2, the thickness proportion of the side laminated blank 1 and the middle layer laminated blank 2 directly influences the quality, cutting performance, service life, cost and other problems of the manufactured cutter head; the existing fine slicing tool bit adopts a single-layer structure, so the problem of thickness ratio is not involved, even though the design of a multi-layer structure is involved in the field of the tool bit at present, the existing fine slicing tool bit is generally of the same multi-layer structure with a diamond layer, and even though the existing fine slicing tool bit has different layer structures, the design of different layer thicknesses is not involved to realize the overall performance optimization of the tool bit; the saw blade and the cutter head designed for finish cutting are designed, the cutter head particularly adopts a three-layer structure of a specific blank, and the thickness of the specific three-layer structure is subjected to targeted optimization design, so that the problems of the quality cutting speed of the edge cutting, the service life, the cost of the saw blade and the like can be considered.
The Fe-Cu-Sn-Co pre-alloy powder comprises the following components in percentage by weight: 55% -65% of Fe, 10% -20% of Cu, 2% -10% of Sn and 10% -25% of Co; the Fe-Cu-Sn-Co pre-alloyed powder has good self-sharpening property, good holding force on diamond, and can improve the sharpness of a saw blade.
The Cu-Sn prealloy powder comprises the following components in percentage by weight: 80-90% of Cu and 10-20% of Sn; the sintering temperature of the Cu-Sn prealloy powder is low, and the effect of connecting all metals is achieved.
The Fe-Cu-Sn-Ni pre-alloy powder comprises the following components in percentage by weight: 40% -50% of Fe, 35% -45% of Cu, 2% -8% of Sn and 2% -10% of Ni; the Fe-Cu-Sn-Ni prealloy powder has good impact resistance, combines the two alloy powders, can resist harder materials in cutting, and prolongs the cutting life of products.
The powder particle size of the Fe-Cu-Sn-Co pre-alloy powder, the Cu-Sn pre-alloy powder and the Fe-Cu-Sn-Ni pre-alloy powder is 200-400 meshes.
In the step S5, the substrate is made of a material with the diameter of 350mm and 65Mn and 25 teeth.
In step S5, the fine slicing tool bit and the substrate are welded together by adopting silver soldering lugs and high-frequency induction.
First embodiment
S1, preparing a carcass material:
1. preparing Fe-Cu-Sn-Co pre-alloy powder, and weighing 55% of Fe,20% of Cu,5% of Sn and 20% of Co according to the weight percentage;
2. Preparing Cu-Sn prealloy powder, and weighing 80% of Cu and 20% of Sn according to the weight percentage;
3. Preparing Fe-Cu-Sn-Ni pre-alloy powder, and weighing 40% of Fe,45% of Cu,5% of Sn and 10% of Ni according to the weight percentage;
4. weighing 15% of Fe-Cu-Sn-Co prealloy powder, 35% of Cu-Sn prealloy powder and 50% of Fe-Cu-Sn-Ni prealloy powder according to weight percentage, and uniformly mixing to prepare a matrix material; the powder granularity of the Fe-Cu-Sn-Co pre-alloy powder, the Cu-Sn pre-alloy powder and the Fe-Cu-Sn-Ni pre-alloy powder is 200-400 meshes;
s2, preparing a diamond material: a. edge layer diamond material: is formed by evenly mixing diamond with the granularity of 70/80-100/120; b. intermediate layer diamond material: is formed by evenly mixing diamond with the granularity of 45/50-70/80;
S3, preparing a side layer blank and an intermediate layer blank: a. weighing 75-95% of matrix material and 5-25% of boundary layer diamond material according to weight percentage, adding liquid paraffin according to the proportion of 5-10ml/kg, and mixing for 2-3 hours by a mixer; b. weighing 75-95% of matrix material and 5-25% of middle layer diamond material according to weight percentage, adding liquid paraffin according to the proportion of 5-10ml/kg, and mixing for 2-3 hours by a mixer;
S4, preparing a cutter head: a. the side layer blank and the middle layer blank are respectively pressed into a side layer pressed blank and a middle layer pressed blank in a cold pressing mode, and the pressure used for cold pressing is 2.5-3.0t/cm 2; b. sequentially loading the green compacts into a graphite die according to the three-layer structure of 'side layer green compact + middle layer green compact + side layer green compact', and performing hot-pressing sintering to obtain a fine slicing cutter head; carrying out hot-pressing sintering on the graphite mould in a hot-pressing sintering machine, wherein the sintering temperature is 700-800 ℃, the sintering pressure is 350-400kg/cm 2, and the sintering heat preservation time is 1.5-2.5 minutes;
S5, welding the fine slicing tool bit obtained in the step S4 on a substrate by adopting a silver soldering lug through high-frequency induction, and shaping, polishing and sharpening to obtain the fine slicing tool bit.
Second embodiment
S1, preparing a carcass material:
1. Preparing Fe-Cu-Sn-Co pre-alloy powder, and weighing 65% of Fe,15% of Cu,5% of Sn and 15% of Co according to the weight percentage;
2. preparing Cu-Sn prealloy powder, and weighing 90% of Cu and 10% of Sn according to the weight percentage;
3. preparing Fe-Cu-Sn-Ni pre-alloy powder, and weighing 50% of Fe,40% of Cu,5% of Sn and 5% of Ni according to the weight percentage;
4. Weighing 30% of Fe-Cu-Sn-Co prealloy powder, 30% of Cu-Sn prealloy powder and 40% of Fe-Cu-Sn-Ni prealloy powder according to weight percentage, and uniformly mixing to prepare a matrix material; the powder granularity of the Fe-Cu-Sn-Co pre-alloy powder, the Cu-Sn pre-alloy powder and the Fe-Cu-Sn-Ni pre-alloy powder is 200-400 meshes;
s2, preparing a diamond material: a. edge layer diamond material: is formed by evenly mixing diamond with the granularity of 70/80-100/120; b. intermediate layer diamond material: is formed by evenly mixing diamond with the granularity of 45/50-70/80;
S3, preparing a side layer blank and an intermediate layer blank: a. weighing 75-95% of matrix material and 5-25% of boundary layer diamond material according to weight percentage, adding liquid paraffin according to the proportion of 5-10ml/kg, and mixing for 2-3 hours by a mixer; b. weighing 75-95% of matrix material and 5-25% of middle layer diamond material according to weight percentage, adding liquid paraffin according to the proportion of 5-10ml/kg, and mixing for 2-3 hours by a mixer;
S4, preparing a cutter head: a. the side layer blank and the middle layer blank are respectively pressed into a side layer pressed blank and a middle layer pressed blank in a cold pressing mode, and the pressure used for cold pressing is 2.5-3.0t/cm 2; b. sequentially loading the green compacts into a graphite die according to the three-layer structure of 'side layer green compact + middle layer green compact + side layer green compact', and performing hot-pressing sintering to obtain a fine slicing cutter head; carrying out hot-pressing sintering on the graphite mould in a hot-pressing sintering machine, wherein the sintering temperature is 700-800 ℃, the sintering pressure is 350-400kg/cm 2, and the sintering heat preservation time is 1.5-2.5 minutes;
S5, welding the fine slicing tool bit obtained in the step S4 on a substrate by adopting a silver soldering lug through high-frequency induction, and shaping, polishing and sharpening to obtain the fine slicing tool bit.
Referring to fig. 1, the invention also discloses a fine slice, which is prepared by the preparation method of the high cost performance fine slice; the fine slicing comprises a substrate and a fine slicing tool bit welded on the substrate; the fine slicing tool bit is of a three-layer structure and is provided with two side laminated blanks positioned on an upper layer and a lower layer and an intermediate layer pressed blank positioned in an intermediate layer; the prepared fine slice can take the trimming quality and the cutting speed into account, has long service life, lower whole production cost and high cost performance and has wide market prospect; the finished slice manufactured by the invention abandons the single-layer structure of the existing finished slice, and innovatively adopts a three-layer blank structure which is formed by laminating blanks, middle-layer blanks and blank laminating modes; the diamond granularity in the edge laminated blank is finer, so that trimming is ensured to be neat during cutting, and the trimming quality is improved; the diamond in the middle layer pressed compact is thicker, so that sharpness in cutting is ensured, and the travelling speed is high; the fine granularity and low concentration can greatly reduce the cost, so that the sharpness can be maintained and the good trimming quality can be maintained; and on the basis of specific raw materials and specific mixture ratio of the two kinds of pressed billets, a three-layer green body structure is manufactured, so that the problems of slicing quality, cutting performance, service life, cutter head cost and the like of the cutter head are solved.
The above examples and drawings are not intended to limit the form or form of the present invention, and any suitable variations or modifications thereof by those skilled in the art should be construed as not departing from the scope of the present invention.

Claims (7)

1.一种高性价比精切片的制备方法,其特征在于，具有以下步骤：1. A method for preparing a high-cost-effective fine section, characterized by comprising the following steps: S1、准备胎体材料：按重量百分比分别称取15%-30%Fe-Cu-Sn-Co预合金粉、25%-40%Cu-Sn预合金粉末和30%-50%Fe-Cu-Sn-Ni预合金粉末混合均匀，得到胎体材料；S1. Prepare the matrix material: weigh 15%-30% Fe-Cu-Sn-Co pre-alloy powder, 25%-40% Cu-Sn pre-alloy powder and 30%-50% Fe-Cu-Sn-Ni pre-alloy powder respectively by weight and mix them evenly to obtain the matrix material; 所述Fe-Cu-Sn-Co预合金粉的各组分及重量百分比如下：Fe55%-65%，Cu10%-20%，Sn2%-10%，Co10%-25%；The components and weight percentages of the Fe-Cu-Sn-Co pre-alloyed powder are as follows: Fe 55%-65%, Cu 10%-20%, Sn 2%-10%, Co 10%-25%; 所述Cu-Sn预合金粉的各组分及重量百分比如下：Cu80%-90% Sn10%-20%；The components and weight percentages of the Cu-Sn pre-alloyed powder are as follows: Cu 80%-90% Sn 10%-20%; 所述Fe-Cu-Sn-Ni预合金粉的各组分及重量百分比如下：Fe40%-50%，Cu35%-45%，Sn2%-8%，Ni2%-10%；The components and weight percentages of the Fe-Cu-Sn-Ni pre-alloyed powder are as follows: Fe 40%-50%, Cu 35%-45%, Sn 2%-8%, Ni 2%-10%; S2、准备金刚石材料：a、边层金刚石材料：是由粒度70/80-100/120的金刚石均匀混合而成；b、中间层金刚石材料：是由粒度为45/50-70/80的金刚石均匀混合而成；S2. Prepare diamond materials: a. Diamond material for the side layer: a uniform mixture of diamonds with a particle size of 70/80-100/120; b. Diamond material for the middle layer: a uniform mixture of diamonds with a particle size of 45/50-70/80; S3、制备边层坯料和中间层坯料：a、边层坯料，按重量百分比称取75%-95%胎体材料和5%-25%边层金刚石材料均匀混合；b、中间层坯料，按重量百分比称取75%-95%胎体材料和5%-25%中间层金刚石材料均匀混合；S3, preparing edge layer blanks and middle layer blanks: a, edge layer blanks, weighing 75%-95% of matrix material and 5%-25% of edge layer diamond material by weight percentage and evenly mixing; b, middle layer blanks, weighing 75%-95% of matrix material and 5%-25% of middle layer diamond material by weight percentage and evenly mixing; S4、制备刀头：a、将边层坯料和中间层坯料分别通过冷压方式压制成型边层压坯和中间层压坯；b、将压坯按“边层压坯+中间层压坯+边层压坯”这样三层结构顺序依次装入石墨模具中，并进行热压烧结，得到精切片刀头；S4, preparing a cutter head: a, cold pressing the edge layer blank and the middle layer blank into an edge layer blank and an middle layer blank respectively; b, sequentially loading the blanks into a graphite mold in the order of a three-layer structure of "edge layer blank + middle layer blank + edge layer blank", and hot pressing and sintering to obtain a fine-slicing cutter head; S5、将步骤S4中得到的精切片刀头焊接在基体上，并经过整形、抛光、开刃得到精切片;S5, the fine slice obtained in step S4 is welded to the substrate, and after shaping, polishing, and sharpening to obtain a fine slice; 在步骤S3中，边层坯料混合时，加上按5-10ml/kg比例的液体石蜡，上混料机混合2-3小时；中间层坯料混合时，加上按5-10ml/kg比例的液体石蜡，上混料机混合2-3小时;In step S3, when the edge layer of the billet is mixed, add liquid paraffin at a ratio of 5-10ml / kg, and mix on a mixer for 2-3 hours; when the intermediate layer of the billet is mixed, add liquid paraffin at a ratio of 5-10ml / kg, and mix on a mixer for 2-3 hours; 在步骤S4中，冷压压制成型所用的压力为2.5-3.0t/cm2;石墨模具在热压烧结机中进行热压烧结，烧结温度为700-800℃，烧结压力为350-400kg/cm2，烧结保温时间为1.5-2.5分钟。In step S4, the pressure used for cold pressing is 2.5-3.0 t/ cm2 ; the graphite mold is hot pressed and sintered in a hot press sintering machine, the sintering temperature is 700-800°C, the sintering pressure is 350-400 kg/ cm2 , and the sintering holding time is 1.5-2.5 minutes. 2.如权利要求1所述一种高性价比精切片的制备方法,其特征在于：边层压坯的厚度：中间层压坯的厚度=1：1.5-2.5。2. A method for preparing a cost-effective fine-cut slice as described in claim 1, characterized in that the thickness of the side layer pressed blank: the thickness of the middle layer pressed blank = 1:1.5-2.5. 3.如权利要求2所述一种高性价比精切片的制备方法,其特征在于：边层压坯的厚度：中间层压坯的厚度=1:1.8。3. A method for preparing a cost-effective fine-slice sheet as described in claim 2, characterized in that the thickness of the side layer pressed blank: the thickness of the middle layer pressed blank = 1:1.8. 4.如权利要求1所述一种高性价比精切片的制备方法,其特征在于：所述Fe-Cu-Sn-Co预合金粉、Cu-Sn预合金粉和Fe-Cu-Sn-Ni预合金粉的粉末粒度为200-400目。4. A method for preparing a cost-effective fine slice as described in claim 1, characterized in that the powder particle size of the Fe-Cu-Sn-Co pre-alloyed powder, Cu-Sn pre-alloyed powder and Fe-Cu-Sn-Ni pre-alloyed powder is 200-400 mesh. 5.如权利要求1所述一种高性价比精切片的制备方法,其特征在于：在步骤S5中，所述基体是选用直径为350mm、65Mn材质和25齿的基体。5. A method for preparing a high-cost-effective fine slice as claimed in claim 1, characterized in that: in step S5, the substrate is a substrate with a diameter of 350 mm, a material of 65Mn and 25 teeth. 6.如权利要求1所述一种高性价比精切片的制备方法,其特征在于：在步骤S5中，所述精切片刀头和基体采用银焊片并通过高频感应焊接在一起。6. A method for preparing a high-cost-effective fine-slice slice as claimed in claim 1, characterized in that: in step S5, the fine-slice slice head and the substrate are welded together using silver solder sheets through high-frequency induction. 7.一种精切片，其特征在于：所述精切片由权利要求1至6中任一项所述高性价比精切片的制备方法制成。7. A finely sliced sheet, characterized in that the finely sliced sheet is made by the method for preparing the cost-effective finely sliced sheet according to any one of claims 1 to 6.
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