CN109822102B - Preparation method of fine-grained diamond saw blade - Google Patents
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- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B22F7/08—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 with one or more parts not made from powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
- B28D1/12—Saw-blades or saw-discs specially adapted for working stone
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
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- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
- C22C38/105—Ferrous alloys, e.g. steel alloys containing cobalt containing Co and Ni
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
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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
- 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
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- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
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Abstract
The invention discloses a preparation method of a fine-grained diamond saw blade, wherein a diamond matrix material comprises the following components in percentage by mass: 50-55% of a framework material, Fe: 80-83%, Cu: 15-17%, Sn: 2-3%; 10-20% of a low-melting-point material, Cu: 84-86%, Sn: 14-16%; 30-35% of brittle material, Mn: 14-15%, Si: 7-8%, Ni: 6-8%, Co: 6-7%; the balance being Fe. The invention can not only keep sharpness, but also keep good trimming quality.
Description
The application provides a divisional application for the main subject of application No. 2017105517696 and application No. 2017.07.07, namely 'a matrix material, a fine-grained diamond saw blade and a preparation method of the saw blade'.
Technical Field
The invention relates to the technical field of diamond saw blades, in particular to a preparation method of a fine-grained diamond saw blade.
Background
The diamond saw blade is a cutting tool and is widely applied to processing of hard and brittle materials such as concrete, refractory materials, stones, ceramics and the like. The diamond saw blade mainly comprises two parts, namely a substrate and a diamond tool bit. The substrate is a main supporting part to which the diamond tip is bonded, and the diamond tip is a part that is cut during use, and the diamond tip is continuously consumed during use, while the substrate is not, and the diamond tip can cut because it contains diamond, which is currently the hardest substance, which rubs and cuts a work object in the diamond tip, and diamond particles are enclosed by metal inside the tip. In the prior art, the connection between the diamond tool bit and the substrate is mostly realized by welding.
Different materials adopt different types of diamond saw blades, and different powder formulas are suitable for the characteristics of different materials, so that the quality, the effect, the qualification rate, the cost and the benefit of a material product are directly influenced. For example, when cutting granite, it is desirable to maintain sharpness while maintaining good cut edge quality.
In order to improve the cutting efficiency and the cutting quality, higher requirements are put forward on the basis of the original diamond saw blade. Accordingly, the present inventors have further studied this and developed a fine-grained diamond saw blade and a method for manufacturing the same, which resulted therefrom.
Disclosure of Invention
The invention aims to provide a preparation method of a fine-grained diamond saw blade, which can keep sharpness and good trimming quality.
In order to solve the technical problems, the technical solution of the invention is as follows:
a method for preparing a fine-grained diamond saw blade comprises the following steps:
step one, preparing a matrix material: 50-55% of a framework material, wherein Fe: 80-83%, Cu: 15-17%, Sn: 2-3%; 10-20% of a low melting point material, wherein Cu: 84-86%, Sn: 14-16% and 30-35% of brittle materials, wherein Mn: 14-15%, Si: 7-8%, Ni: 6-8%, Co: 6-7%; the balance being Fe; the framework material, the low-melting-point material and the brittle material are all pre-alloyed powder; uniformly mixing the powder to obtain various powders with the granularity of 300-400 meshes; weighing the three pre-alloyed powders according to the weight ratio, and uniformly mixing to obtain a matrix material;
step two, preparing the diamond: the layer a is formed by uniformly mixing 15-25% diamond with the granularity of 70/80-80/100 volume concentration; the layer c is uniformly mixed by diamond with the granularity of 50/60-60/70 and the volume concentration of 8-13%;
step three, respectively and uniformly mixing the uniformly mixed diamond and the uniformly mixed matrix material to obtain a mixture, adding 0.3-0.5ml/kg of forming agent by taking the weight of the mixture as a base number, and fully wetting the mixture to obtain blanks a and c with the diamond layer;
step four, respectively setting the blanks a and c with the diamond layers at 1.5-2.0t/cm2Pressing and forming under pressure to obtain a pressed blank;
step six, the pressed compact is loaded into a graphite die according to a three-layer structure of 'a + c + a', and the pressed compact is sintered in a hot pressing sintering machine at the temperature of 800-2Keeping the temperature for 1-2min under pressure;
step seven, after the mould is cooled, the mould is removed to obtain the diamond tool bit;
and step eight, welding the diamond tool bit and the 65Mn base body together on a high-frequency induction welding machine to obtain the granite saw blade.
Further, in step eight, the current of the high-frequency induction welding machine is 900-.
And further comprising step nine, shaping, edging and polishing the welded granite saw blade to obtain a qualified product.
Further, the forming agent is paraffin.
After the scheme is adopted, the edge cutting machine has the advantages of keeping sharpness, being good in edge cutting quality, and avoiding edge breakage and corner hanging. The granite cutter head prepared by the method of the invention not only has better sharpness, but also has better service life. According to test determination, the bending strength is 850-1050MPa, the hardness is 95-105HRB, and the bridge cutting test machine is used for testing, so that the power consumption is 6-8KW, the edge cutting quality is good, and no edge breakage occurs.
Drawings
FIG. 1 is a schematic view of a sector-shaped tool tip of the present invention;
FIG. 2 is a schematic diagram of sharpness of three standards according to an embodiment of the present invention;
FIG. 3 is a schematic life diagram of a third sample of an embodiment of the invention;
FIG. 4 is a graph showing the effect of trimming the three standards according to the embodiment of the present invention;
Detailed Description
The present invention will be described in more detail with reference to specific examples. The invention discloses a fine-grained diamond saw blade which comprises a base body and a fan-shaped cutter head, wherein the fan-shaped cutter head is formed by mixing a matrix material and diamond. As shown in fig. 1, the fan-shaped cutter head is of a sandwich structure of a + c + a, wherein the thickness ratio of a: c: a is 1:3:1, wherein the diamond of the layer a is formed by adopting ultra-fine grains 70/80-80/100, the volume concentration of the diamond is 15-25%, and the diamond of the layer c is formed by adopting 50/60-60/70, the volume concentration of the diamond is 8-13%. The superfine granularity of the layer a ensures good trimming quality, and the granularity of the layer c is thicker than that of the layer a and provides better sharpness. Meanwhile, the cost can be greatly reduced due to low granularity and concentration, so that the sharpness can be kept, the good trimming quality can be kept, and the cutting device is suitable for cutting high-grade granite.
The matrix material is formed by uniformly mixing 50-55% of framework material, 10-20% of low-melting-point material and 30-35% of brittle material in percentage by mass; the framework material, the low-melting-point material and the brittle material are all pre-alloyed powder; the framework material comprises the following components in percentage by mass: fe: 80-83%, Cu: 15-17%, Sn: 2-3%; the low-melting-point material comprises the following components in percentage by mass: cu: 84-86%, Sn: 14-16%; the brittle material comprises the following components in percentage by mass: mn: 14-15%, Si: 7-8%, Ni: 6-8%, Co: 6-7%; the balance being Fe. Furthermore, the particle size of the pre-alloyed powder is 300-400 meshes. Further, in the segment, the thickness ratio of the a layer to the c layer is 1:3: 1.
Example one
The matrix material is formed by uniformly mixing 50% of framework material, 20% of low-melting-point material and 30% of brittle material in percentage by mass. The framework material, the low-melting-point material and the brittle material are all pre-alloyed powder; the framework material comprises the following components in percentage by mass: fe: 80%, Cu: 17%, Sn: 3 percent; the low-melting-point material comprises the following components in percentage by mass: cu: 84%, Sn: 16 percent; the brittle material comprises the following components in percentage by mass: mn: 14%, Si: 8%, Ni: 6%, Co: 7 percent; the balance being Fe. The main function of the carcass material is to improve the holding force and maintain a certain self-sharpening property.
The fine-grained diamond saw blade is prepared by the following method, comprising the following steps:
step one, preparing a matrix material: uniformly mixing the various powders of the framework material, the low-melting-point material and the brittle material, wherein the particle size is 300-400 meshes; and weighing the three pre-alloy powders according to the weight ratio, and uniformly mixing to obtain the matrix material.
Step two, preparing the diamond: the layer a is formed by uniformly mixing 15-25% diamond with the granularity of 70/80-80/100 volume concentration; the layer c is uniformly mixed by diamond with the granularity of 50/60-60/70 volume concentration of 8-13%.
And step three, respectively and uniformly mixing the uniformly mixed diamond and the uniformly mixed matrix material to obtain a mixture, and adding 0.3-0.5ml/kg of a forming agent by taking the weight of the mixture as a base number, wherein the forming agent is paraffin in the embodiment. Fully wetting the mixture to obtain blanks a and c with the diamond layers.
Step four, respectively setting the blanks a and c with the diamond layers at 1.5-2.0t/cm2And (4) pressing and forming under pressure to obtain a pressed blank.
Step six, the pressed compact is loaded into a graphite die according to a three-layer structure of 'a + c + a', and the pressed compact is sintered in a hot pressing sintering machine at the temperature of 800-2Keeping the temperature for 1-2min under pressure.
And step seven, after the mold is cooled, removing the mold to obtain the diamond fan-shaped cutter head.
And step eight, welding the diamond fan-shaped tool bit and the 65Mn base body together on a high-frequency induction welding machine to obtain the granite saw blade. The current of the high-frequency induction welding machine is 900-1000A, the welding time is 5-10s, and the welding flux is copper welding flux.
And step nine, shaping, edging and polishing the welded granite saw blade to obtain a qualified product.
Example two
The difference from the first embodiment is that: the matrix material is formed by uniformly mixing 55% of framework material, 10% of low-melting-point material and 35% of brittle material in percentage by mass. The framework material, the low-melting-point material and the brittle material are all pre-alloyed powder; the framework material comprises the following components in percentage by mass: fe: 83%, Cu: 15%, Sn: 2 percent; the low-melting-point material comprises the following components in percentage by mass: cu: 86%, Sn: 14 percent; the brittle material comprises the following components in percentage by mass: mn: 15%, Si: 7%, Ni: 8%, Co: 6 percent; the balance being Fe.
The second example and the first example were prepared in the same manner.
EXAMPLE III
In this example, the matrix material and method of example one were used, and samples were taken according to the volume concentration of the a-layer and c-layer, which were sample No. 1, sample No. 2, sample No. 3, sample No. 4, sample No. 5, and sample No. 6, respectively. The results of the performance analysis are shown in Table 1, and it can be seen from FIGS. 2 and 3 that sample No. 1 had the best life but the worst sharpness, sample Nos. 5 and 6 had the better sharpness, and sample Nos. 4, 5 and 6 had the better life. As can be seen in fig. 4, the cut edge quality for sample No. 1 was the worst.
Table 1: analysis of Standard sample Properties
| Standard sample | Volume concentration of layer a and layer c | Sharpness KW | Lifetime m2/mm |
| Sample No. 1 | a:28％c:16％ | 8.63 | 10 |
| Sample No. 2 | a:25％c:13％ | 7.11 | 6.33 |
| Sample No. 3 | a:23％c:11％ | 7.29 | 6.31 |
| Sample No. 4 | a:20％c:9％ | 6.8 | 4.85 |
| Sample No. 5 | a:16％c:9％ | 6.29 | 4.86 |
| Sample No. 6 | a:15％c:8％ | 6.29 | 4.85 |
The above-mentioned embodiments are only preferred embodiments of the present invention, and do not limit the technical scope of the present invention, so that the changes and modifications made by the claims and the specification of the present invention should fall within the scope of the present invention.
Claims (4)
1. A preparation method of a fine-grained diamond saw blade is characterized by comprising the following steps: the method comprises the following steps:
step one, preparing a matrix material: 50-55% of a framework material which is prealloyed powder of trace elements, wherein Fe: 80-83%, Cu: 15-17%, Sn: 2-3%; 10-20% of a low melting point material, wherein Cu: 84% -86%, Sn: 14% -16%; 30-35% of a brittle material, wherein Mn: 14-15%, Si: 7-8%, Ni: 6-8%, Co: 6-7% of Fe, and the balance of Fe; the framework material, the low-melting-point material and the brittle material are all pre-alloyed powder; uniformly mixing the powder to obtain various powders with the granularity of 300-400 meshes; weighing the three pre-alloyed powders according to the mass percentage, and uniformly mixing to obtain a matrix material;
step two, preparing the diamond: the layer a is formed by uniformly mixing 15-25% diamond with the granularity of 70/80-80/100 meshes; the layer c is uniformly mixed by diamond with the granularity of 50/60-60/70 meshes and the volume concentration of 8-13%;
step three, uniformly mixing the uniformly mixed diamonds corresponding to the layers a and c and the uniformly mixed matrix material respectively to obtain a mixture, adding 0.3-0.5mL/kg of forming agent by taking the weight of the mixture as a base number, and fully wetting the mixture to obtain blanks a and c with diamond layers respectively;
step four, respectively setting the blanks a and c with the diamond layers at 1.5-2.0t/cm2Pressing and forming under pressure to obtain a pressed blank;
step five, the pressed compact is loaded into a graphite die according to a three-layer structure of 'a + c + a', and the pressed compact is sintered in a hot pressing sintering machine at the temperature of 800-2Keeping the temperature for 1-2min under pressure;
sixthly, after the mold is cooled, removing the mold to obtain the diamond tool bit;
and step seven, welding the diamond tool bit and the 65Mn base body together on a high-frequency induction welding machine to obtain the granite saw blade.
2. The method of manufacturing a fine grit diamond saw blade according to claim 1, wherein: in the seventh step, the current of the high-frequency induction welding machine is 900-1000A, the welding time is 5-10s, and the welding flux is copper welding flux.
3. The method of manufacturing a fine grit diamond saw blade according to claim 1, wherein: and step eight, shaping, edging and polishing the welded granite saw blade to obtain a qualified product.
4. The method of manufacturing a fine grit diamond saw blade according to claim 1, wherein: the forming agent is paraffin.
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| CN201910174570.5A CN109822102B (en) | 2017-07-07 | 2017-07-07 | Preparation method of fine-grained diamond saw blade |
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| CN201910174570.5A CN109822102B (en) | 2017-07-07 | 2017-07-07 | Preparation method of fine-grained diamond saw blade |
| CN201710551769.6A CN107414085B (en) | 2017-07-07 | 2017-07-07 | A kind of diamond segment carcass material and fine-granularity diamond saw blade |
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| CN109822102B true CN109822102B (en) | 2021-03-05 |
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| CN108673752A (en) * | 2018-04-02 | 2018-10-19 | 泉州众志新材料科技有限公司 | A kind of diamond segment and its manufacturing process |
| CN109176903B (en) * | 2018-10-31 | 2020-05-22 | 泉州市华兴超硬工具有限公司 | Diamond saw blade for dry cutting of ceramic products and preparation method thereof |
| CN109365827B (en) * | 2018-10-31 | 2022-05-03 | 广东奔朗新材料股份有限公司 | Dry-cutting diamond saw blade and manufacturing method thereof |
| CN110091442B (en) * | 2019-05-15 | 2021-07-23 | 德淮半导体有限公司 | Cutter for cutting wafer and cutting method |
| CN111037754B (en) * | 2019-12-31 | 2021-11-23 | 浙江省永康市金都工贸有限公司 | Trapezoidal cutter head for cutting stone and preparation method thereof |
| CN112195383B (en) * | 2020-09-02 | 2021-08-31 | 泉州众志金刚石工具有限公司 | Novel matrix material and diamond segment |
| CN112222411B (en) * | 2020-09-02 | 2023-04-07 | 泉州众志新材料科技有限公司 | Diamond segment and preparation method thereof |
| CN112620627B (en) * | 2020-12-20 | 2024-07-30 | 湖南富栊新材料股份有限公司 | Surface nanocrystallization modified metal powder and application thereof |
| CN113681004A (en) * | 2021-08-10 | 2021-11-23 | 泉州众志新材料科技有限公司 | Preparation method of high-cost-performance fine cut sheet and fine cut sheet |
| CN113600810A (en) * | 2021-08-10 | 2021-11-05 | 泉州众志新材料科技有限公司 | Matrix material for preparing high-cost-performance fine slices and fine slice cutter head |
| CN115229193B (en) * | 2022-07-21 | 2023-04-07 | 北京爱克瑞特金刚石工具有限公司 | Preparation method and application of full-powder saw blade |
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| CN104289718B (en) * | 2014-09-18 | 2017-10-24 | 泉州众志金刚石工具有限公司 | The preparation method of marble cutter head and used carcass material |
| CN105039824B (en) * | 2015-06-25 | 2017-09-29 | 安泰科技股份有限公司 | Diamond circular saw blade cutter head and preparation method thereof |
| CN106180730B (en) * | 2016-07-18 | 2018-06-29 | 泉州众志金刚石工具有限公司 | A kind of preparation method of the novel general saw blade of high performance-price ratio granite |
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2017
- 2017-07-07 CN CN201710551769.6A patent/CN107414085B/en active Active
- 2017-07-07 CN CN201910174570.5A patent/CN109822102B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109822102A (en) | 2019-05-31 |
| CN107414085A (en) | 2017-12-01 |
| CN107414085B (en) | 2019-07-16 |
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