CN109175379B - Diamond saw blade tool bit and preparation method thereof - Google Patents

Diamond saw blade tool bit and preparation method thereof Download PDF

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Publication number
CN109175379B
CN109175379B CN201811301978.6A CN201811301978A CN109175379B CN 109175379 B CN109175379 B CN 109175379B CN 201811301978 A CN201811301978 A CN 201811301978A CN 109175379 B CN109175379 B CN 109175379B
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powder
parts
saw blade
diamond
diamond saw
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CN109175379A (en
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栾会生
刘冰
张建立
马永德
贾建凯
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Shijiazhuang Hisun Tools Co ltd
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Shijiazhuang Hisun Tools 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
    • 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
    • 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
    • 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
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/17—Metallic particles coated with metal
    • 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
    • B22F3/02—Compacting only
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/006—Making ferrous alloys compositions used for making ferrous alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0207—Using a mixture of prealloyed powders or a master alloy
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
    • 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
    • C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
    • 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
    • C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
    • C22C38/105—Ferrous alloys, e.g. steel alloys containing cobalt containing Co and Ni
    • 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
    • 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
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps

Abstract

The invention discloses a diamond saw blade tool bit and a preparation method thereof. The preparation method of the diamond saw blade tool bit comprises the following steps: 1) preparing a powder metallurgy material for the diamond saw blade tool bit; 2) mixing the pretreated diamond powder with a powder metallurgy material; 3) cold pressing; 4) and (5) sintering. The powder metallurgy material for the diamond saw blade tool bit comprises pre-alloy powder, copper powder, tin powder and iron powder, wherein the pre-alloy powder comprises copper, iron, tin, nickel and cobalt. The diamond powder comprises diamond powder pretreated by adopting an electroplating and coating method, and the coating of the diamond powder comprises metals such as chromium, nickel, cobalt, titanium and the like. The preparation method of the diamond saw blade tool bit can avoid using a hot pressing die, the tool bit has stronger toughness and elastic modulus, the service life and the drilling speed of the diamond saw blade can be prolonged, the production cost is reduced, and the production efficiency is improved.

Description

Diamond saw blade tool bit and preparation method thereof
Technical Field
The invention relates to a manufacturing technology of a saw blade tool bit, in particular to a diamond saw blade tool bit and a manufacturing method thereof.
Background
The diamond saw blade is a common cutting tool and is widely used in the processing industry of hard and brittle materials such as concrete, refractory materials, stone materials, ceramics and the like. Has the characteristics of simple structure, high strength, wear resistance and the like. The diamond saw blade mainly comprises a substrate and a tool bit, wherein the substrate is a main supporting part for bonding the tool bit, and the tool bit is a block-shaped component with a certain radian and made of tool bit alloy embedded with diamond particles and is a part for cutting. The tool bit is generally connected to the outer side of the substrate in a welding mode and the like, and the performance of the tool bit directly determines the cutting speed and the service life of the diamond saw blade.
The diamond saw blade bit is mainly manufactured by adopting a powder metallurgy technology. Firstly, mixing various metal powders with diamond particles with certain particle sizes, then pouring the mixture into a cold pressing die for cold pressing, and then sintering and pressing to obtain the diamond saw blade tool bit.
The powder metallurgy technology is a process technology for manufacturing products such as metal materials and components thereof, composite materials and components thereof and the like by using metal powder or a mixture of metal powder and non-metal powder as a raw material and through steps of mixing, press forming, sintering and the like. The powder metallurgy technology can effectively reduce the segregation of alloy components in products, can prepare unbalanced materials with excellent electrical, magnetic, optical and mechanical properties, can easily realize the coincidence of various materials, can produce materials and products which cannot be produced by the traditional method and have special structures and properties, can conveniently regenerate and comprehensively utilize the materials, and also has a series of advantages of energy conservation, material saving, high product precision, good stability and the like. At present, the powder metallurgy technology has been widely applied to the fields of automobile industry, equipment manufacturing industry, metallurgy industry, aerospace industry, military industry, instruments and meters, hardware tools, electronics and the like, and has become a technical field with great development potential in the manufacturing industry.
At present, the alloy used for the diamond saw blade tool bit has stronger brittleness, is easy to crack in the using process and seriously influences the service life of the diamond saw blade tool bit; the existing cutter head preparation process needs pressure sintering, a mold is needed, generally, graphite materials are used for preparation, and the cost of the graphite mold is high, so that the production cost is increased.
When the conventional diamond saw blade is used, the problems of fast abrasion of the tool bit and slow cutting speed exist, and the diamond particles in the tool bit are found to fall off, so that the cutting performance of the diamond particles is not well exerted, and the reason is that the holding force of the tool bit alloy to the diamond is weak. The holding force of diamond in the tip alloy can be improved by means of laser sintering and the like, but the cost is high and the operation is complicated.
In summary, the defects of strong alloy brittleness of the tool bit, high production cost, short service life and low production efficiency exist in the production of the prior diamond saw blade tool bit, so that the invention of the diamond saw blade tool bit and the preparation method thereof is needed to solve the problems.
Disclosure of Invention
The invention aims to provide a diamond saw blade tool bit and a preparation method thereof, and the preparation method of the diamond saw blade tool bit can improve the toughness and the elastic modulus of the diamond saw blade tool bit, prolong the service life of a diamond saw blade and improve the cutting speed, does not use a pressure sintering die, reduces the types of the die, reduces the production cost and improves the production efficiency.
In order to solve the technical problem, the invention provides a method for preparing a diamond saw blade bit, which comprises the following steps:
step 1) preparing a powder metallurgy material: taking 3-10 parts of pre-alloyed powder, 20-40 parts of copper powder, 1-5 parts of tin powder and 45-70 parts of iron powder according to the following parts by weight, and mixing to form a powder metallurgy material for the diamond saw blade tool bit; wherein the pre-alloyed powder comprises the following raw materials in parts by weight: 30-50 parts of copper, 15-35 parts of iron, 5-20 parts of tin, 3-15 parts of nickel and 10-30 parts of cobalt;
step 2) mixing diamond powder with powder metallurgy material: mixing 2-7 parts of pretreated diamond powder with 93-98 parts of powder metallurgy material obtained in the step 1) to prepare a mixed material; the pretreated diamond powder comprises electroplating pretreatment, wherein the thickness of the electroplating layer is 2-10 mu m, and then coating pretreatment is carried out, the thickness of the coating layer is 50-200 mu m, and the granularity of the diamond powder is 25-70 meshes;
step 3), cold pressing: putting the mixed material obtained in the step 2) into a cold pressing die for cold pressing to obtain a cold-pressed compact;
step 4), sintering: and 3) placing the cold-pressed compact obtained in the step 3) into sintering equipment for sintering to obtain the cutter head.
The particle size of the pre-alloy powder is 100-400 meshes, the particle size of the copper powder is 100-400 meshes, the particle size of the tin powder is 100-400 meshes, and the particle size of the iron powder is 100-400 meshes.
The pre-alloyed powder is atomized powder and is prepared by adopting a vacuum gas atomization method in the prior art.
The diamond powder has a particle size of 25-70 meshes, is subjected to electroplating pretreatment, the thickness of the electroplating layer is 2-10 mu m, and is subjected to coating pretreatment, and the coating thickness is 50-200 mu m.
The method for electroplating pretreatment of diamond powder is a prior art method, and one example of the method for electroplating pretreatment of diamond powder is as follows: putting a nickel sulfate electrolyte into an electroplating bath, wherein the concentration of the nickel sulfate electrolyte is 30g/L, the pH value is 12-13, and the temperature is 59-62 ℃; adding diamond powder to be pretreated into an electroplating bath; arranging a nickel electrode as an anode and a stainless steel electrode as a cathode in the electroplating bath, and applying 24V direct current voltage between the two electrodes; circulating the nickel sulfate electrolyte containing diamond powder in the electroplating bath by using a pump, so that the diamond powder in the electrolyte continuously impacts the stainless steel cathode; in the electroplating process, formaldehyde accounting for 10-15% of the weight of the electrolyte is added into the electrolyte to be used as a reducing agent; the electroplating time is 35-100 min, and diamond powder with the nickel coating thickness of 2-10 μm is obtained. The diamond powder can be plated with metal such as cobalt and chromium by the same method.
Before the electroplating pretreatment of the diamond powder, the surface of the diamond powder needs to be cleaned: putting diamond powder into a sodium hydroxide solution with the concentration of 10-15%, soaking for 1-3 hours at 70-80 ℃, and washing to be neutral; and (3) putting the cleaned diamond powder into 5% aqua regia for acid washing for 10-20 minutes, and washing the diamond powder to be neutral, so that the electroplating pretreatment step can be carried out.
The coating method of the diamond powder is as follows (taking cobalt coating as an example): 1) cleaning, namely removing pollutants on the surfaces of the diamond particles at room temperature by using analytically pure ethanol to ensure the cleanness of the surfaces; 2) preparing a coating agent, mixing a commercial granulating agent (such as WS-180 and the like), cobalt powder, ethanol and acetone according to the following parts by weight: 0.5-2 parts of granulating agent, 20-35 parts of cobalt powder, 29-41 parts of ethanol and 27-45 parts of acetone, and stirring by a motor at 60-90 ℃ for 200 revolutions per minute; 3) coating, namely coating the prepared coating agent and diamond particles in a coating machine, wherein the coating thickness is 50-200 mu m according to different application scenes; 4) and (4) post-treatment, namely reducing the coated diamond particles.
The diamond powder-coated metal comprises at least one of cobalt, nickel, titanium and the like which have good wetting angles with diamond particles and can form strong carbide elements.
And 1) mixing the powder metallurgy materials for the diamond saw blade cutter head by using a three-dimensional mixer at the temperature of 15-30 ℃ and the relative humidity of less than 30%, wherein the mixing time is 1-3 h. And adding a wetting agent in the mixing process, wherein the adding amount is 0.3-2 g/kg of the powder metallurgy material for the diamond saw blade tool bit.
The wetting agent comprises glycerol, zinc stearate and isopropanol and is prepared from the following components in parts by weight: 39-45 parts of glycerol, 7-12 parts of zinc stearate and 38-51 parts of isopropanol.
And 2) mixing the powder metallurgy material for the diamond saw blade tool bit and the diamond powder by using a three-dimensional mixer, and mixing for 15-60 min under the conditions that the temperature is 15-30 ℃ and the relative humidity is less than 30%.
The temperature of the cold pressing in the step 3) is room temperature, and the pressure of the cold pressing is 20-30 t/cm2。
The pressure of the cold pressing in the step 3) is increased to 20-30 t/cm from normal pressure within 2-10 s2Then, the pressure is maintained for 1-5 s.
The sintering temperature in the step 4) is 870-970 ℃, and the sintering time is 3-6 h.
The sintering temperature in the step 4) is raised to 870 ℃ in 1-3 h, the temperature is maintained for 20-30 min, and then the temperature is reduced to room temperature in 1-4 h.
The step 4) sintering is sintering under the atmosphere of hydrogen.
The sintering of the step 4) is carried out in a sintering device in the prior art, and the sintering device comprises but is not limited to a bell jar furnace and a tunnel type continuous sintering furnace.
In the sintering process in the step 4), the tool bit cold-pressed compact is not required to be pressed, so that a special die matched with the tool bit cold-pressed compact is not used, and the tool bit cold-pressed compact is only required to be isolated to a certain extent so as to prevent mutual adhesion after sintering.
In order to solve the technical problem, the invention also provides a diamond saw blade tool bit which comprises the tool bit obtained by adopting the preparation method.
According to the preparation method of the diamond saw blade tool bit, high pressure is adopted to carry out cold pressing on the powder metallurgy material for the diamond saw blade tool bit, and then a high-density cold-pressed blank (namely a tool bit blank) can be obtained, namely, the requirement of compactness of tool bit production can be met, so that the tool bit blank is not required to be pressurized in the sintering process, and a qualified tool bit product can be obtained after conventional sintering.
The prefabricated product of the tool bit manufactured by the method for manufacturing the diamond saw blade tool bit provided by the invention has stronger toughness and is not easy to generate brittle fracture, thereby prolonging the service life of the diamond saw blade.
Effects of the invention
The diamond saw blade tool bit and the preparation method thereof have the advantages that: firstly, the diamond saw blade tool bit with stronger toughness and elastic modulus is obtained, and compared with the traditional tool bit, the diamond saw blade tool bit has the advantages of enhanced fatigue resistance and longer service life; the sintering step is pressureless sintering, a pressurizing mould is not needed, and only the cutter head is isolated to prevent adhesion, so that the operation cost of the sintering step is reduced; the diamond saw blade tool bit has stronger toughness, and compared with the traditional tool bit production process, the precision requirements of a cold pressing die and sintering equipment are reduced, so that the production cost is reduced; the diamond powder is sequentially subjected to electroplating and coating pretreatment, the holding force of the tool bit alloy on the diamond is increased, the drilling speed is improved, the service life of the drill bit is prolonged, the content of noble metal in the tool bit alloy is reduced, and the production cost is reduced; and fifthly, thousands of finished tool bits can be obtained by single-batch sintering, and only dozens of finished tool bits can be obtained by single-batch pressure sintering in the prior art, so that the preparation method greatly improves the production efficiency.
Detailed Description
For a further understanding of the present invention, reference will now be made to the following descriptions taken in conjunction with the accompanying examples, and it is to be understood that the descriptions are intended to illustrate further features and advantages of the invention, rather than to limit the scope of the appended claims.
Example 1
The diamond saw blade bit is manufactured by the following method:
step 1) preparing a powder metallurgy material: 3 parts of pre-alloy powder, 40 parts of copper powder, 1 part of tin powder and 56 parts of iron powder are mixed according to the following parts by weight to form a powder metallurgy material for the diamond saw blade tool bit, wherein the pre-alloy powder is atomized powder and is prepared by adopting a vacuum gas atomization method in the prior art, and the powder metallurgy material comprises the following raw materials in parts by weight: 30 parts of copper, 35 parts of iron, 5 parts of tin, 15 parts of nickel and 15 parts of cobalt, wherein the granularity of the pre-alloy powder is 100-200 meshes, the granularity of the copper powder is 100-200 meshes, the granularity of the tin powder is 100-200 meshes, and the granularity of the iron powder is 100-200 meshes;
step 2) mixing diamond powder with powder metallurgy material: mixing 2 parts of diamond powder with 98 parts of the powder metallurgy material obtained in the step 1) to prepare a mixed material, wherein the granularity of the diamond powder is 25-30 meshes, a three-dimensional mixer is adopted, the mixing temperature is 20 ℃, the relative humidity is less than 20%, and the mixing time is 15 min;
step 3), cold pressing: putting the mixed material obtained in the step 2) into a cold pressing die, and increasing the pressing pressure from normal pressure to 20t/cm within 2s2Maintaining the pressure, and performing cold pressing for 5s to obtain a cold pressed compact;
step 4), sintering: and (3) putting the cold-pressed compact obtained in the step 3) into a sintering device, raising the temperature to 870 ℃ within 1h, maintaining the temperature for 7h, and then lowering the temperature to room temperature within 2h to obtain the tool bit.
The mixing conditions of the powder metallurgy materials for the diamond saw blade tool bit in the step 1) are as follows: adding a wetting agent, wherein the wetting agent comprises 39 parts by weight of glycerol, 10 parts by weight of zinc stearate and 51 parts by weight of isopropanol, the adding amount of the wetting agent is 0.3g/kg of powder metallurgy material for the diamond saw blade tool bit, a mixing device adopts a three-dimensional mixer, the mixing temperature is 15 ℃, the relative humidity is less than 30%, and the mixing time is 2 hours.
The diamond powder in the step 2) is subjected to electroplating pretreatment, the metal of a plating layer is chromium, and the thickness of the plating layer is 2 microns; then, the coating pretreatment is carried out, the coated metal is cobalt, and the coating thickness is 60 mu m. The plating pretreatment and the cladding pretreatment methods are as described above.
About 3000 diamond saw blade finished product tool bits are obtained to this batch.
The obtained diamond saw blade tip was welded to the outer side of the base body to produce a diamond saw blade having a diameter of 400mm and a tip height of 15 mm. The obtained diamond saw blade was tested on a cement concrete pavement (standard C30 cement, concrete stone was cobblestone, and cutting depth was 50mm), cutting speed reached 2.62 m/min, and service life reached 720 m.
The diamond saw blade tool bit produced by the method does not use a hot-pressing die, and the production cost is reduced by 30 percent compared with the existing diamond saw blade.
Example 2
The diamond saw blade bit is manufactured by the following method:
step 1) preparing a powder metallurgy material: the powder metallurgy material for the diamond saw blade tool bit is prepared by mixing 10 parts of pre-alloy powder, 20 parts of copper powder, 5 parts of tin powder and 65 parts of iron powder according to the following parts by weight, wherein the pre-alloy powder is atomized powder and is prepared by adopting a vacuum gas atomization method in the prior art, and the powder metallurgy material comprises the following raw materials in parts by weight: 50 parts of copper, 15 parts of iron, 20 parts of tin, 3 parts of nickel and 14 parts of cobalt, wherein the granularity of the pre-alloy powder is 200-300 meshes, the granularity of the copper powder is 200-300 meshes, the granularity of the tin powder is 200-300 meshes, and the granularity of the iron powder is 200-300 meshes;
step 2) mixing diamond powder with powder metallurgy material: mixing 3 parts of diamond powder and 97 parts of the powder metallurgy material obtained in the step 1) to prepare a mixed material, wherein the granularity of the diamond is 30-40 meshes, a three-dimensional mixer is adopted, the mixing temperature is 15 ℃, the relative humidity is less than 30%, and the mixing time is 40 min;
step 3), cold pressing: putting the mixed material obtained in the step 2) into a cold pressing die, and increasing the pressing pressure from normal pressure to 22t/cm within 4s2Maintaining the pressure, and performing cold pressing for 4s to obtain a cold pressed compact;
step 4), sintering: and (3) putting the cold-pressed compact obtained in the step 3) into a sintering device, raising the temperature to 920 ℃ within 2h, maintaining the temperature for 0.5h, and then lowering the temperature to room temperature within 2h to obtain the tool bit.
The mixing conditions of the powder metallurgy materials for the diamond saw blade tool bit in the step 1) are as follows: adding wetting agents, wherein the components and the parts by weight of the wetting agents comprise 42 parts of glycerol, 9 parts of zinc stearate and 49 parts of isopropanol, the adding amount of the wetting agents is 0.5g/kg of powder metallurgy materials for the diamond saw blade tool bit, a mixing device adopts a three-dimensional mixer, the mixing temperature is 22 ℃, the relative humidity is less than 20%, and the mixing time is 3 hours.
The diamond powder in the step 2) is subjected to electroplating pretreatment, the metal of a coating is chromium, and the thickness of the coating is 3 microns; then, the coating pretreatment is carried out, the coated metal is cobalt, and the coating thickness is 50 μm. The plating pretreatment and the cladding pretreatment methods are as described above.
About 2900 finished diamond saw blade tips are obtained from the batch.
The obtained diamond saw blade tip was welded to the outer side of the base body to produce a diamond saw blade having a diameter of 400mm and a tip height of 15 mm. The obtained diamond saw blade was tested on a cement concrete pavement (standard C30 cement, concrete stone was cobblestone, cutting depth was 50mm), cutting speed reached 2.64 m/min, and service life reached 760 m.
The diamond saw blade tool bit produced by the method does not use a hot-pressing die, and the production cost is reduced by 35 percent compared with the existing diamond saw blade.
Example 3
The diamond saw blade bit is manufactured by the following method:
step 1) preparing a powder metallurgy material: the powder metallurgy material for the diamond saw blade tool bit is prepared by mixing 10 parts of pre-alloy powder, 40 parts of copper powder, 5 parts of tin powder and 45 parts of iron powder according to the following parts by weight, wherein the pre-alloy powder is atomized powder and is prepared by adopting a vacuum gas atomization method in the prior art, and the powder metallurgy material comprises the following raw materials in parts by weight: 40 parts of copper, 30 parts of iron, 10 parts of tin, 10 parts of nickel and 10 parts of cobalt, wherein the granularity of the pre-alloy powder is 300-400 meshes, the granularity of the copper powder is 300-400 meshes, the granularity of the tin powder is 300-400 meshes, and the granularity of the iron powder is 300-400 meshes;
step 2) mixing diamond powder with powder metallurgy material: mixing 4 parts of diamond powder and 96 parts of powder metallurgy material obtained in the step 1) to obtain a mixed material, wherein the granularity of the diamond is 35-40 meshes, a three-dimensional mixer is adopted, the mixing temperature is 25 ℃, the relative humidity is less than 10%, and the mixing time is 50 min;
step 3), cold pressing: putting the mixed material obtained in the step 2) into a cold pressing die, and increasing the pressing pressure from normal pressure to 25t/cm within 6s2Maintaining the pressure, and performing cold pressing for 3s to obtain a cold pressed compact;
step 4), sintering: and (3) putting the cold-pressed compact obtained in the step 3) into a sintering device, raising the temperature to 970 ℃ within 3h, maintaining the temperature for 0.5h, and then lowering the temperature to room temperature within 2h to obtain the cutter head.
The mixing conditions of the powder metallurgy materials for the diamond saw blade tool bit in the step 1) are as follows: adding a wetting agent, wherein the wetting agent comprises 45 parts by weight of glycerol, 7 parts by weight of zinc stearate and 48 parts by weight of isopropanol, the adding amount of the wetting agent is 1.0g/kg of powder metallurgy material for the diamond saw blade tool bit, a mixing device adopts a three-dimensional mixer, the mixing temperature is 20 ℃, the relative humidity is less than 10%, and the mixing time is 1 h.
The diamond powder in the step 2) is subjected to electroplating pretreatment, the metal of a plating layer is cobalt, and the thickness of the plating layer is 4 microns; then, the coating pretreatment is carried out, the coated metal is nickel, and the coating thickness is 80 mu m. The plating pretreatment and the cladding pretreatment methods are as described above.
About 3600 finished diamond saw blade cutting heads are obtained in the batch.
The obtained diamond saw blade tip was welded to the outer side of the base body to produce a diamond saw blade having a diameter of 400mm and a tip height of 15 mm. The obtained diamond saw blade was tested on a cement concrete pavement (standard C30 cement, concrete stone was cobblestone, and cutting depth was 50mm), cutting speed reached 2.7 m/min, and service life reached 700 m.
The diamond saw blade tool bit produced by the method does not use a hot-pressing die, and the production cost is reduced by 32 percent compared with the existing diamond saw blade.
Example 4
The diamond saw blade bit is manufactured by the following method:
step 1) preparing a powder metallurgy material: the preparation method comprises the following steps of mixing 8 parts of pre-alloy powder, 20 parts of copper powder, 2 parts of tin powder and 70 parts of iron powder by weight to form a powder metallurgy material for the diamond saw blade tool bit, wherein the pre-alloy powder is atomized powder, is prepared by adopting a vacuum gas atomization method in the prior art, and comprises the following raw materials in parts by weight: 33 parts of copper, 16 parts of iron, 15 parts of tin, 6 parts of nickel and 30 parts of cobalt, wherein the granularity of the pre-alloy powder is 100-300 meshes, the granularity of the copper powder is 100-200 meshes, the granularity of the tin powder is 200-400 meshes, and the granularity of the iron powder is 200-320 meshes;
step 2) mixing diamond powder with powder metallurgy material: mixing 5 parts of diamond powder and 95 parts of the powder metallurgy material obtained in the step 1) to prepare a mixed material, wherein the granularity of the diamond is 40-50 meshes, a three-dimensional mixer is adopted, the mixing temperature is 30 ℃, the relative humidity is less than 20%, and the mixing time is 60 min;
step 3), cold pressing: putting the mixed material obtained in the step 2) into a cold pressing die, and increasing the pressing pressure from normal pressure to 28t/cm within 8s2Maintaining the pressure, and performing cold pressing for 2s to obtain a cold pressed compact;
step 4), sintering: and (3) putting the cold-pressed compact obtained in the step 3) into a sintering device, raising the temperature to 890 ℃ within 3h, maintaining the temperature for 1.5h, and then lowering the temperature to room temperature within 1h to obtain the cutter head.
The mixing conditions of the powder metallurgy materials for the diamond saw blade tool bit in the step 1) are as follows: adding a wetting agent, wherein the wetting agent comprises 40 parts by weight of glycerol, 12 parts by weight of zinc stearate and 48 parts by weight of isopropanol, the adding amount of the wetting agent is 1.6g/kg of powder metallurgy material for the diamond saw blade tool bit, a mixing device adopts a three-dimensional mixer, the mixing temperature is 26 ℃, the relative humidity is less than 30%, and the mixing time is 2 hours.
The diamond powder in the step 2) is subjected to electroplating pretreatment, the metal of a plating layer is cobalt, and the thickness of the plating layer is 6 microns; then, the coating pretreatment is carried out, the coated metal is titanium, and the coating thickness is 120 mu m. The plating pretreatment and the cladding pretreatment methods are as described above.
About 4000 diamond saw blade finished tool bits are obtained in the batch.
The obtained diamond saw blade tip was welded to the outer side of the base body to produce a diamond saw blade having a diameter of 400mm and a tip height of 15 mm. The obtained diamond saw blade was tested with a cement concrete pavement (standard C30 cement, concrete stone was cobblestone, cutting depth was 50mm), cutting speed reached 2.6 m/min, and service life reached 780 m.
The diamond saw blade tool bit produced by the method does not use a hot-pressing die, and the production cost is reduced by 39 percent compared with the existing diamond saw blade.
Example 5
The diamond saw blade bit is manufactured by the following method:
step 1) preparing a powder metallurgy material: the preparation method comprises the following steps of mixing 5 parts of pre-alloy powder, 30 parts of copper powder, 3 parts of tin powder and 62 parts of iron powder by weight to form a powder metallurgy material for the diamond saw blade tool bit, wherein the pre-alloy powder is atomized powder, is prepared by adopting a vacuum gas atomization method in the prior art, and comprises the following raw materials in parts by weight: 45 parts of copper, 20 parts of iron, 8 parts of tin, 7 parts of nickel and 20 parts of cobalt, wherein the granularity of the pre-alloy powder is 200-300 meshes, the granularity of the copper powder is 200-280 meshes, the granularity of the tin powder is 100-230 meshes, and the granularity of the iron powder is 100-220 meshes;
step 2) mixing diamond powder with powder metallurgy material: mixing 6 parts of diamond powder and 94 parts of the powder metallurgy material obtained in the step 1) to prepare a mixed material, wherein the granularity of the diamond is 45-55 meshes, a three-dimensional mixer is adopted, the mixing temperature is 20 ℃, the relative humidity is less than 30%, and the mixing time is 30 min;
step 3), cold pressing:putting the mixed material obtained in the step 2) into a cold pressing die, and increasing the pressing pressure from normal pressure to 30t/cm within 10s2Maintaining the pressure, and performing cold pressing for 1s to obtain a cold pressed compact;
step 4), sintering: and (3) putting the cold-pressed compact obtained in the step 3) into a sintering device, raising the temperature to 940 ℃ within 2.8h, maintaining the temperature for 0.7h, and then lowering the temperature to room temperature within 1.6h to obtain the cutter head.
The mixing conditions of the powder metallurgy materials for the diamond saw blade tool bit in the step 1) are as follows: adding wetting agents, wherein the components and the parts by weight of the wetting agents are 45 parts of glycerol, 12 parts of zinc stearate and 43 parts of isopropanol, the adding amount of the wetting agents is 2.0g/kg of powder metallurgy materials for the diamond saw blade tool bit, a mixing device adopts a three-dimensional mixer, the mixing temperature is 26 ℃, the relative humidity is less than 30%, and the mixing time is 2 hours.
The diamond powder in the step 2) is subjected to electroplating pretreatment, the metal of a coating is nickel, and the thickness of the coating is 3 microns; then, the coating pretreatment is carried out, the coated metal is cobalt, and the coating thickness is 150 mu m. The plating pretreatment and the cladding pretreatment methods are as described above.
About 2200 finished diamond saw blade tips were obtained for this batch.
The obtained diamond saw blade tip was welded to the outer side of the base body to produce a diamond saw blade having a diameter of 400mm and a tip height of 15 mm. The obtained diamond saw blade was tested on a cement concrete pavement (standard C30 cement, concrete stone was cobblestone, cutting depth was 50mm), cutting speed reached 2.8 m/min, and service life reached 800 m.
The diamond saw blade tool bit produced by the method does not use a hot-pressing die, and the production cost is reduced by 36 percent compared with the existing diamond saw blade.
Example 6
The diamond saw blade bit is manufactured by the following method:
step 1) preparing a powder metallurgy material: taking 7 parts of pre-alloy powder, 35 parts of copper powder, 4 parts of tin powder and 54 parts of iron powder according to the following parts by weight, mixing to form a powder metallurgy material for the diamond saw blade tool bit, wherein the pre-alloy powder is atomized powder, is prepared by adopting a vacuum gas atomization method in the prior art, and comprises the following raw materials in parts by weight: 35 parts of copper, 25 parts of iron, 12 parts of tin, 3 parts of nickel and 25 parts of cobalt, wherein the granularity of the pre-alloy powder is 100-150 meshes, the granularity of the copper powder is 200-300 meshes, the granularity of the tin powder is 300-350 meshes, and the granularity of the iron powder is 160-280 meshes;
step 2) mixing diamond powder with powder metallurgy material: mixing 7 parts of diamond powder and 93 parts of powder metallurgy material obtained in the step 1) to prepare a mixed material, wherein the granularity of the diamond is 55-65 meshes, a three-dimensional mixer is adopted, the mixing temperature is 18 ℃, the relative humidity is less than 30%, and the mixing time is 40 min;
step 3), cold pressing: putting the mixed material obtained in the step 2) into a cold pressing die, and increasing the pressing pressure from normal pressure to 30t/cm within 6s2Maintaining the pressure, and performing cold pressing for 4s to obtain a cold pressed compact;
step 4), sintering: putting the cold-pressed compact obtained in the step 3) into a sintering device, raising the temperature to 960 ℃ within 4.1h, maintaining the temperature for 0.9h, and then lowering the temperature to room temperature within 1h to obtain the cutter head.
The mixing conditions of the powder metallurgy materials for the diamond saw blade tool bit in the step 1) are as follows: adding wetting agents, wherein the components and the parts by weight of the wetting agents are 45 parts of glycerol, 12 parts of zinc stearate and 38 parts of isopropanol, the adding amount of the wetting agents is 1.2g/kg of powder metallurgy materials for the diamond saw blade tool bit, a mixing device adopts a three-dimensional mixer, the mixing temperature is 30 ℃, the relative humidity is less than 20%, and the mixing time is 2 hours.
The diamond powder in the step 2) is subjected to electroplating pretreatment, the metal of a coating is nickel, and the thickness of the coating is 5 microns; then, the coating pretreatment is carried out, the coated metal is nickel, and the coating thickness is 180 mu m. The plating pretreatment and the cladding pretreatment methods are as described above.
About 3800 finished diamond saw blade tips are obtained in the batch.
The obtained diamond saw blade tip was welded to the outer side of the base body to produce a diamond saw blade having a diameter of 400mm and a tip height of 15 mm. The obtained diamond saw blade was tested on a cement concrete pavement (standard C30 cement, concrete stone was cobblestone, and cutting depth was 50mm), cutting speed reached 2.72 m/min, and service life reached 750 m.
The diamond saw blade tool bit produced by the method does not use a hot-pressing die, and the production cost is reduced by 42 percent compared with the existing diamond saw blade.
Example 7
The diamond saw blade bit is manufactured by the following method:
step 1) preparing a powder metallurgy material: the preparation method comprises the following steps of mixing 9 parts of pre-alloy powder, 25 parts of copper powder, 5 parts of tin powder and 61 parts of iron powder by weight to form a powder metallurgy material for the diamond saw blade tool bit, wherein the pre-alloy powder is atomized powder, is prepared by adopting a vacuum gas atomization method in the prior art, and comprises the following raw materials in parts by weight: the pre-alloyed powder comprises copper 42, iron 18, tin 18, nickel 12 and cobalt 10, wherein the particle size of the pre-alloyed powder is 100-200 meshes, the particle size of the copper powder is 100-220 meshes, the particle size of the tin powder is 200-240 meshes, and the particle size of the iron powder is 160-260 meshes;
step 2) mixing diamond powder with powder metallurgy material: mixing 7 parts of diamond powder and 93 parts of powder metallurgy material obtained in the step 1) to prepare a mixed material, wherein the granularity of the diamond is 60-70 meshes, a three-dimensional mixer is adopted, the mixing temperature is 28 ℃, the relative humidity is less than 20%, and the mixing time is 50 min;
step 3), cold pressing: putting the mixed material obtained in the step 2) into a cold pressing die, and increasing the pressing pressure from normal pressure to 20t/cm within 8s2Maintaining the pressure, and performing cold pressing for 3s to obtain a cold pressed compact;
step 4), sintering: and (3) putting the cold-pressed compact obtained in the step 3) into a sintering device, raising the temperature to 900 ℃ within 2.2h, maintaining the temperature for 1.2h, and then lowering the temperature to room temperature within 1.8h to obtain the cutter head.
The mixing conditions of the powder metallurgy materials for the diamond saw blade tool bit in the step 1) are as follows: adding a wetting agent, wherein the wetting agent comprises 40 parts by weight of glycerol, 12 parts by weight of zinc stearate and 48 parts by weight of isopropanol, the adding amount of the wetting agent is 1.4g/kg of powder metallurgy material for the diamond saw blade tool bit, a mixing device adopts a three-dimensional mixer, the mixing temperature is 17 ℃, the relative humidity is less than 20%, and the mixing time is 3 hours.
The diamond powder in the step 2) is subjected to electroplating pretreatment, the metal of a coating is nickel, and the thickness of the coating is 10 microns; then, the coating pretreatment is carried out, the coated metal is titanium, and the coating thickness is 200 mu m. The plating pretreatment and the cladding pretreatment methods are as described above.
About 3400 diamond saw blade finished tool bits are obtained in this batch.
The obtained diamond saw blade tip was welded to the outer side of the base body to produce a diamond saw blade having a diameter of 400mm and a tip height of 15 mm. The obtained diamond saw blade was tested with a cement concrete pavement (standard C30 cement, concrete stone was cobblestone, cutting depth was 50mm), cutting speed reached 2.74 m/min, and service life reached 790 m.
The diamond saw blade tool bit produced by the method does not use a hot-pressing die, and the production cost is reduced by 38 percent compared with the existing diamond saw blade.
Example 8
The diamond saw blade bit is manufactured by the following method:
step 1) preparing a powder metallurgy material: the powder metallurgy material for the diamond saw blade tool bit is prepared by mixing 10 parts of pre-alloy powder, 20 parts of copper powder, 5 parts of tin powder and 65 parts of iron powder according to the following parts by weight, wherein the pre-alloy powder is atomized powder and is prepared by adopting a vacuum gas atomization method in the prior art, and the powder metallurgy material comprises the following raw materials in parts by weight: 42 parts of copper, 18 parts of iron, 18 parts of tin, 12 parts of nickel and 10 parts of cobalt, wherein the granularity of the pre-alloy powder is 100-200 meshes, the granularity of the copper powder is 100-220 meshes, the granularity of the tin powder is 200-240 meshes, and the granularity of the iron powder is 160-260 meshes;
step 2) mixing diamond powder with powder metallurgy material: mixing 6 parts of diamond powder and 94 parts of the powder metallurgy material obtained in the step 1) to prepare a mixed material, wherein the granularity of the diamond is 60-70 meshes, a three-dimensional mixer is adopted, the mixing temperature is 30 ℃, the relative humidity is less than 30%, and the mixing time is 20 min;
step 3), cold pressing: putting the mixed material obtained in the step 2) into a cold pressing die, and pressing within 6sIncreasing the pressure from normal pressure to 23t/cm2Maintaining the pressure, and performing cold pressing for 3s to obtain a cold pressed compact;
step 4), sintering: and (3) putting the cold-pressed compact obtained in the step 3) into a sintering device, raising the temperature to 910 ℃ within 2.1h, maintaining the temperature for 1.4h, and then lowering the temperature to room temperature within 2h to obtain the cutter head.
The mixing conditions of the powder metallurgy materials for the diamond saw blade tool bit in the step 1) are as follows: adding a wetting agent, wherein the wetting agent comprises 40 parts by weight of glycerol, 12 parts by weight of zinc stearate and 48 parts by weight of isopropanol, the adding amount of the wetting agent is 1.4g/kg of powder metallurgy material for the diamond saw blade tool bit, a mixing device adopts a three-dimensional mixer, the mixing temperature is 17 ℃, the relative humidity is less than 20%, and the mixing time is 3 hours.
The diamond powder in the step 2) is subjected to electroplating pretreatment, the metal of a plating layer is cobalt, and the thickness of the plating layer is 10 microns; then, the coating pretreatment is carried out, the coated metal is titanium, and the coating thickness is 110 mu m. The plating pretreatment and the cladding pretreatment methods are as described above.
The diamond powder of the step 2) is coated and pretreated diamond powder, the coated metal is titanium, and the coating treatment method is as described above, and the coating thickness is 110 micrometers.
About 3100 diamond saw blade finished cutting heads are obtained in the batch.
The obtained diamond saw blade tip was welded to the outer side of the base body to produce a diamond saw blade having a diameter of 400mm and a tip height of 15 mm. The obtained diamond saw blade was tested with a cement concrete pavement (standard C30 cement, concrete stone was cobblestone, cutting depth was 50mm), cutting speed reached 2.78 m/min, and service life reached 790 m.
The diamond saw blade tool bit produced by the method does not use a hot-pressing die, and the production cost is reduced by 37 percent compared with the existing diamond saw blade.
Comparative example 1
The method of the prior art is adopted to manufacture the diamond saw blade head:
step 1) preparing a powder metallurgy material: preparing a powder metallurgy material for the diamond saw blade tool bit according to the following parts by weight: 27 parts of copper, 25 parts of tin, 22 parts of iron, 2 parts of nickel and 47 parts of prealloy, wherein the prealloy comprises the following metals in parts by weight: 69 parts of iron, 16 parts of cobalt and 15 parts of copper, and putting the materials into a mixing barrel to be mixed for 30min to obtain a powder metallurgy material for the diamond saw blade tool bit;
step 2) mixing diamond and powder metallurgy materials: mixing the powder metallurgy material for the diamond saw blade tool bit obtained in the step 1) with diamond, wherein the weight ratio of the diamond to the powder metallurgy material for the diamond saw blade tool bit is 4:100, adding wetting agents (the wetting agents comprise 40 parts by weight of glycerol, 10 parts by weight of zinc stearate and 50 parts by weight of isopropanol) into the materials, and putting the materials into a mixing barrel to mix for 2-3 hours, wherein the adding amount of the wetting agents is 2.2 g/kg;
step 3), cold pressing: putting the mixed material obtained in the step 2) into a cold pressing die, wherein the cold pressing pressure is 5t/cm2Pressing for 5min to obtain a cold-pressed blank of the cutter head;
step 4), hot-pressing sintering: putting the cold-pressed compact of the cutter head obtained in the step 3) into a graphite hot-pressing sintering die, and putting the cold-pressed compact of the cutter head and the graphite hot-pressing sintering die into a hot-pressing sintering machine together at the temperature of 850 ℃ and the pressure of 5t/cm2Sintering is carried out under the condition (9 min).
About 30 finished diamond saw blade cutting heads are obtained in the batch.
The obtained diamond saw blade tip was welded to the outer side of the base body to produce a diamond saw blade having a diameter of 400mm and a tip height of 15 mm. The obtained diamond saw blade was tested with a cement concrete pavement (standard C30 cement, concrete stone was cobblestone, cutting depth was 50mm), cutting speed reached 1.8 m/min, and service life reached 500 m.
Comparative example 2
The method of the prior art is adopted to manufacture the diamond saw blade head:
step 1) preparing a powder metallurgy material: preparing a powder metallurgy material for the diamond saw blade tool bit according to the following parts by weight: 26 parts of copper, 26 parts of tin, 24 parts of iron, 3 parts of nickel and 50 parts of prealloy, wherein the prealloy consists of the following metals in parts by weight: 68 parts of iron, 18 parts of cobalt and 16 parts of copper, and mixing the materials in a mixing barrel for 30min to obtain a powder metallurgy material for the diamond saw blade tool bit;
step 2) mixing diamond with powder metallurgy material: mixing the powder metallurgy material for the diamond saw blade tool bit obtained in the step 1) with diamond, wherein the weight ratio of the diamond to the powder metallurgy material for the diamond saw blade tool bit is 5:100, adding wetting agents (the wetting agents comprise 40 parts by weight of glycerol, 10 parts by weight of zinc stearate and 50 parts by weight of isopropanol) into the materials, and putting the materials into a mixing barrel to mix for 2-3 hours, wherein the adding amount of the wetting agents is 2.0 g/kg;
step 3), cold pressing: putting the mixed material obtained in the step 2) into a cold pressing die, wherein the cold pressing pressure is 6t/cm2Pressing for 4min to obtain a cold-pressed blank of the cutter head;
step 4), hot-pressing sintering: putting the cold-pressed compact of the cutter head obtained in the step 3) into a hot-pressing sintering die, and putting the cold-pressed compact of the cutter head into a hot-pressing sintering machine together at 860 ℃ and 4t/cm2Under the condition (2), sintering is carried out for 15 min.
About 28 finished diamond saw blade tips are obtained in the batch.
The obtained diamond saw blade tip was welded to the outer side of the base body to produce a diamond saw blade having a diameter of 400mm and a tip height of 15 mm. The obtained diamond saw blade was tested with a cement concrete pavement (standard C30 cement, concrete stone was cobblestone, cutting depth was 50mm), cutting speed reached 1.8 m/min, and service life reached 500 m.
In conclusion, compared with the prior art, the method for preparing the diamond saw blade tool bit does not use a hot-pressing sintering die; the service life of the diamond saw blade manufactured by the tool bit obtained by the preparation method is prolonged by 40-60%, the drilling speed is improved by 44-56%, the production cost is reduced by more than 31%, and the production efficiency of the tool bit is improved by 10 times.

Claims (7)

1. The preparation method of the diamond saw blade tool bit is characterized by comprising the following steps:
step 1) preparing a powder metallurgy material: taking 3-10 parts of pre-alloyed powder, 20-40 parts of copper powder, 1-5 parts of tin powder and 45-70 parts of iron powder according to the following parts by weight, and mixing at the temperature of 15-30 ℃ to form a powder metallurgy material for the diamond saw blade bit; wherein the pre-alloyed powder comprises the following raw materials in parts by weight: 30-50 parts of copper, 15-35 parts of iron, 5-20 parts of tin, 3-15 parts of nickel and 10-30 parts of cobalt;
step 2) mixing diamond powder with powder metallurgy material: mixing 2-7 parts of pretreated diamond powder with 93-98 parts of powder metallurgy material obtained in the step 1) to prepare a mixed material; the pretreated diamond powder comprises electroplating pretreatment, wherein the thickness of the electroplating layer is 2-10 mu m, and then coating pretreatment is carried out, the thickness of the coating layer is 50-200 mu m, and the granularity of the diamond powder is 25-70 meshes;
step 3), cold pressing: putting the mixed material obtained in the step 2) into a cold pressing die for cold pressing to obtain a cold-pressed compact;
step 4), sintering: and 3) placing the cold-pressed compact obtained in the step 3) into sintering equipment for sintering to obtain the cutter head.
2. The method of manufacturing a diamond saw blade bit according to claim 1, wherein the pre-alloyed powder is atomized powder having a particle size of 100 to 400 mesh, the copper powder has a particle size of 100 to 400 mesh, the tin powder has a particle size of 100 to 400 mesh, and the iron powder has a particle size of 100 to 400 mesh.
3. The method as claimed in claim 1, wherein the metal of the electroplated layer of step 2) comprises at least one of nickel, cobalt and chromium, the metal of the clad layer comprises at least one of a metal having a good wetting angle with diamond and a metal capable of forming strong carbide, and the metal having a good wetting angle with diamond and a metal capable of forming strong carbide comprises cobalt, nickel and titanium.
4. The method for manufacturing a diamond saw blade tip as claimed in claim 1, wherein the pressure of cold pressing in the step 3) is 20 to 30t/cm2And the time of cold pressing is 1-5 s.
5. The method for manufacturing a diamond saw blade tip according to claim 1, wherein the sintering temperature in the step 4) is 870 to 970 ℃, and the sintering time is 3 to 6 hours.
6. The method of manufacturing a diamond saw blade tip as set forth in claim 1, wherein the sintering of step 4) is performed in a hydrogen atmosphere.
7. A diamond saw blade tip comprising a tip obtained by the method for manufacturing a diamond saw blade tip according to any one of claims 1 to 6.
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101961784A (en) * 2010-09-21 2011-02-02 博深工具股份有限公司 Powder metallurgy material and method for manufacturing diamond bit
CN103334039A (en) * 2013-07-15 2013-10-02 深圳市东维丰电子科技股份有限公司 Copper-based nano diamond composite material and preparation method thereof
CN106041088A (en) * 2016-05-23 2016-10-26 江苏华昌工具制造有限公司 Method for manufacturing dry cutting blade through pressureless sintering
CN106182448A (en) * 2016-08-19 2016-12-07 广州晶体科技有限公司 Sandwich-type gang saw tool bit and manufacture method thereof
CN106757241A (en) * 2016-12-02 2017-05-31 慕利民 For the bortz powder electro-plating method of diamond fretsaw
CN108097972A (en) * 2017-12-28 2018-06-01 福建省泉州市华钻金刚石工具有限公司 A kind of preparation method of metallic bond cutter head and the diamond disc with the metallic bond cutter head
CN108166046A (en) * 2017-12-18 2018-06-15 南京航空航天大学 A kind of preparation method of composite deposite diamond fretsaw

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101961784A (en) * 2010-09-21 2011-02-02 博深工具股份有限公司 Powder metallurgy material and method for manufacturing diamond bit
CN103334039A (en) * 2013-07-15 2013-10-02 深圳市东维丰电子科技股份有限公司 Copper-based nano diamond composite material and preparation method thereof
CN106041088A (en) * 2016-05-23 2016-10-26 江苏华昌工具制造有限公司 Method for manufacturing dry cutting blade through pressureless sintering
CN106182448A (en) * 2016-08-19 2016-12-07 广州晶体科技有限公司 Sandwich-type gang saw tool bit and manufacture method thereof
CN106757241A (en) * 2016-12-02 2017-05-31 慕利民 For the bortz powder electro-plating method of diamond fretsaw
CN108166046A (en) * 2017-12-18 2018-06-15 南京航空航天大学 A kind of preparation method of composite deposite diamond fretsaw
CN108097972A (en) * 2017-12-28 2018-06-01 福建省泉州市华钻金刚石工具有限公司 A kind of preparation method of metallic bond cutter head and the diamond disc with the metallic bond cutter head

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