CN109175379A - A kind of diamond saw blade and preparation method thereof - Google Patents

A kind of diamond saw blade and preparation method thereof Download PDF

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Publication number
CN109175379A
CN109175379A CN201811301978.6A CN201811301978A CN109175379A CN 109175379 A CN109175379 A CN 109175379A CN 201811301978 A CN201811301978 A CN 201811301978A CN 109175379 A CN109175379 A CN 109175379A
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parts
saw blade
powder
diamond saw
diamond
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CN109175379B (en
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栾会生
刘冰
张建立
马永德
贾建凯
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Shijiazhuang Oceanpower Tools Co Ltd
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Shijiazhuang Oceanpower 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 kind of diamond saw blades and preparation method thereof.The preparation method of the diamond saw blade includes the following steps: 1) preparation diamond saw blade powdered metallurgical material；2) pretreated bortz powder and powdered metallurgical material are mixed；3) cold pressing compacting；4) it is sintered.The diamond saw blade powdered metallurgical material includes prealloy powder, copper powder, glass putty and iron powder, and the prealloy powder includes copper, iron, tin, nickel and cobalt.The bortz powder includes carrying out pretreated bortz powder using plating and method for coating, and coating includes the metals such as chromium, nickel, cobalt, titanium.It can be avoided using diamond saw blade preparation method of the present invention using hot pressing die, cutter head has stronger toughness and elasticity modulus, can increase the service life and drilling speed of diamond saw blade, reduces production cost, improves production efficiency.

Description

A kind of diamond saw blade and preparation method thereof
Technical field
The present invention relates to the technologies of preparing of saw blade tip, and in particular to a kind of diamond saw blade and preparation method thereof.
Background technique
Diamond saw blade is a kind of common cutting tool, and it is hard to be widely used in concrete, refractory material, stone material, ceramics etc. The processing industry of fragile material.Have the characteristics that structure is simple, intensity is high, wear-resisting.Diamond saw blade is mainly by matrix and cutter head Composition, matrix are the main support parts for bonding cutter head, and cutter head is to be made of the cutter head alloy embedded with diamond particles with one The block member for determining radian has been the part of dissection.Cutter head is generally connected to the outside of matrix by modes such as welding, Performance directly determines the speed of the cutting speed of diamond saw blade, the length of service life.
Diamond saw blade mainly uses PM technique to be manufactured.First by various metals powder and certain particle size Diamond particles co-blended, be then poured into cold stamping die and be cold-pressed, then be sintered compacting and obtain diamond saw Piece cutter head.
PM technique is to use the mixture of metal powder or metal powder and non-metal powder as raw material, warp Mixing, compression moulding, sintering are crossed, the technique for manufacturing the products such as metal material and its component, composite material and its component Technology.Alloying component segregation in product can be effectively reduced using PM technique, can be prepared with excellent electricity, magnetic It learns, the non-equilibrium material of optics and mechanical property, can easily realize meeting for multiple types material, tradition side can be produced The material and product with special construction and performance that method can not produce, carry out material regeneration and comprehensive utilization with can be convenient, It is also equipped with energy conservation, material saving, Product Precision height, stablizes the series of advantages such as good.Currently, PM technique has been widely used It is led in automobile industry, equipment manufacture, metallurgy industry, aerospace, war industry, instrument and meter, hardware tool, electronics etc. Domain has become technical field with development potential in a kind of manufacturing industry.
Currently, the alloy brittleness for diamond saw blade is stronger, it is easy to burst apart in use process, seriously affecting it makes Use the service life；The preparation process of existing cutter head needs pressure sintering, needs using mold, prepared by generally graphite material, graphite mo(u)ld The higher cost of tool, to increase production cost.
When in use, it is fast that there are tool bit abrasions, the slow problem of cutting speed for conventional diamond saw blade, finds in cutter head Diamond particles fall off, without playing the cutting ability of diamond particles very well, the reason is that handle of the cutter head alloy to diamond Holding force is weaker.Holding power of the diamond in cutter head alloy can be improved using the means such as laser sintered, but its is at high cost, operation is multiple It is miscellaneous.
In conclusion at present there are cutter head alloy brittleness is strong in the production of diamond saw blade, high production cost is used Service life is short, the low deficiency of production efficiency, therefore, it is necessary to invent a kind of diamond saw blade and preparation method thereof, on solving State problem.
Summary of the invention
The object of the present invention is to provide a kind of diamond saw blades and preparation method thereof, use the diamond saw blade Cutter head preparation method can be improved the toughness and elasticity modulus of diamond saw blade, improve the service life of diamond saw blade And cutting speed, pressing sintering mold is not used, mold type is reduced, reduces production cost, improves production efficiency.
In order to solve the above technical problems, the present invention provides a kind of diamond saw blade preparation method, comprising the following steps:
Step 1) prepare powdered metallurgical material: according to following parts by weight take 3~10 parts of prealloy powder, 20~40 parts of copper powder, 1~5 part and 45~70 parts of iron powder of glass putty, it is mixed to form diamond saw blade powdered metallurgical material；The wherein prealloy Powder includes the raw material of following parts by weight: 30~50 parts of copper, 15~35 parts of iron, 5~20 parts of tin, 3~15 parts of nickel, 10~30 parts of cobalt；
Step 2) mixes bortz powder and powdered metallurgical material: will be by 2~7 parts of pretreated bortz powder and step 1) 93~98 parts of obtained powdered metallurgical material, which is mixed, blendes together material；It is described to pass through pretreated bortz powder including first passing through electricity Plating pretreatment, plating thickness are 2~10 μm, are pre-processed using cladding, and coating thickness is 50~200 μm, the Buddha's warrior attendant The granularity of mountain flour is 25~70 mesh；
Step 3) cold pressing compacting: by step 2) obtain blend together material investment cold stamping die in carry out cold pressing compacting, obtain cold Press green compact；
Step 4) sintering: the cold pressing green compact that step 3) obtains is put into agglomerating plant and is sintered, cutter head is obtained.
The granularity of the prealloy powder is 100~400 mesh, and the granularity of copper powder is 100~400 mesh, and the granularity of glass putty is 100 ~400 mesh, the granularity of iron powder are 100~400 mesh.
The prealloy powder is atomized powder, is made of the vacuum gas atomization of the prior art.
The granularity of the bortz powder is 25~70 mesh, first passes through plating pretreatment, and plating thickness is 2~10 μm, It pre-processes, is coated with a thickness of 50~200 μm using cladding.
The electroplating pretreatment method of the bortz powder is the method for the prior art, plating pretreatment bortz powder method One example is as follows: nickel sulfate electrolyte being placed in electroplating bath, wherein the concentration of nickel sulfate electrolyte is 30g/L, pH value It is 12~13, temperature is 59~62 DEG C；Bortz powder to be pre-treated is added in electroplating bath；Nickel electrode is set in electroplating bath For anode, stainless steel electrode applies 24V DC voltage as cathode between electrodes；Using pump by the sulphur containing bortz powder Sour nickel electrolyte circulates in electroplating bath, and the bortz powder in electrolyte is made constantly to hit stainless steel cathode；It had been electroplated 10%~15% formaldehyde of electrolyte weight is added in electrolyte, as reducing agent by Cheng Zhong；Electroplating time be 35~ 100min obtains nickel coating with a thickness of 2~10 μm of bortz powder.Above-mentioned same procedure can be used, to bortz powder carry out cobalt, The coats of metal such as chromium.
Before the bortz powder carries out plating pretreatment, needs to carry out surface clean to bortz powder: bortz powder is put Enter in the sodium hydroxide solution that concentration is 10%~15%, is impregnated 1~3 hour at 70~80 DEG C, be washed to neutrality；It will clean Bortz powder be put into concentration be 5% chloroazotic acid in pickling 10~20 minutes, be washed to neutrality, can enter plating pretreatment step Suddenly.
The method for coating of the bortz powder is following (for coating cobalt): 1) cleaning, using analysis straight alcohol in room temperature Pollutant on lower removal diamond particle surfaces, guarantees the cleaning on surface；2) covering is produced, by commercially available granulating agent (such as WS- 180 etc.), cobalt powder, ethyl alcohol, acetone are mixed according to following parts by weight: 0.5~2 part of granulating agent, 20~35 parts of cobalt powder, ethyl alcohol 29~41 parts, 27~45 parts of acetone, at 60~90 DEG C, motor stirs 200 turns/min；3) coat, by the covering produced and Diamond particles are coated in coating machine, according to the difference of application scenarios, coat thickness between 50~200 μm；4) Post-processing carries out reduction treatment to the diamond particles after cladding.
The metal of bortz powder cladding includes that cobalt, nickel, titanium etc. have good wet angle with diamond particles and can shape At at least one of the metal of strong carbide element.
Step 1) the diamond saw blade powdered metallurgical material is used in mixed way three-dimensional material mixer, temperature 15~ 30 DEG C, relative humidity less than 30% under conditions of mixed, incorporation time be 1~3h.Wetting agent is added in mixed process, adds Entering amount is 0.3~2g/kg diamond saw blade powdered metallurgical material.
The wetting agent includes glycerol, zinc stearate, isopropanol, is prepared by following parts by weight: 39~45 parts of glycerol, tristearin 7~12 parts of sour zinc, 38~51 parts of isopropanol.
Step 2) the diamond saw blade powdered metallurgical material and bortz powder are used in mixed way three-dimensional material mixer, At 15~30 DEG C of temperature, relative humidity less than 30% under conditions of mixed, incorporation time is 15~60min.
The temperature of step 3) the cold pressing compacting is room temperature, and the pressure for being cold-pressed compacting is 20~30t/cm2。
The pressure of step 3) the cold pressing compacting is increased to 20~30t/cm by normal pressure in 2~10s2, then maintaining should 1~5s of pressure.
The temperature being sintered in the step 4) is 870~970 DEG C, and the time of sintering is 3~6h.
The temperature of the step 4) sintering is increased to 870-970 DEG C in 1~3h, maintains 20~30min of the temperature, then Temperature is reduced, room temperature is reduced in 1~4h.
Step 4) the sintering is sintered under the atmosphere of hydrogen.
The sintering of the step 4) is carried out in the agglomerating plant of the prior art, and the agglomerating plant includes but is not limited to Bell-type furnace, tunnel continuous sintering furnace.
In the step 4) sintering process, because no longer needing to be cold-pressed green compact application pressure to cutter head, so not using therewith The particular manufacturing craft to match, it is only necessary to cutter head cold pressing green compact be centainly isolated, to prevent stick to each other after sintering.
In order to solve the above technical problems, the present invention also provides a kind of diamond saw blade, the diamond saw blade Including the cutter head obtained using preparation method above-mentioned.
Diamond saw blade preparation method provided by the invention is using elevated pressures to diamond saw blade powder After metallurgical material carries out cold pressing compacting, high density cold pressing green compact (i.e. cutter head blank) can be obtained, that is to say, that it is raw to can reach cutter head The requirements of tightness of production, therefore no longer need to apply pressure to cutter head blank during the sintering process, it can be obtained using after normal sintering Obtain qualified cutter head product.
There is stronger toughness using cutter head prefabrication made of diamond saw blade preparation method provided by the invention, It is not susceptible to brittle fracture, to extend the service life of diamond saw blade.
Effect of the invention
The benefit of diamond saw blade of the invention and preparation method thereof is: 1. obtaining with high-tenacity and springform The diamond saw blade of amount, fatigue resistance enhances compared with traditional cutter head, and the service life is longer；2. sintering step is no pressure Sintering, and without using pressurizing mold, it is only necessary to cutter head is isolated reduced with preventing adhesion the operation of sintering step at This；3. there is diamond saw blade of the invention stronger toughness to reduce cold stamping die compared with the first-born production. art of conventional knives The required precision of tool and agglomerating plant, to reduce production cost；4. successively having carried out being electroplated and coating to bortz powder pre- Processing increases cutter head alloy and improves the service life of drilling speed and drill bit to the holding power of diamond, while reducing knife The content of noble metal, reduces production cost in head alloy；5. the thousands of above finished product cutter heads can be obtained in single batch of sintering, existing Single batch of pressure sintering of technology can only obtain dozens of finished product cutter head, therefore production effect greatly improved in preparation method of the invention Rate.
Specific embodiment
In order to further appreciate that the present invention, technical solution of the present invention is described below with reference to embodiment, but is answered Work as understanding, these descriptions are only further explanation the features and advantages of the present invention, rather than to the limit of the claims in the present invention It is fixed.
Embodiment 1
Diamond saw blade is manufactured with the following method:
Step 1) prepare powdered metallurgical material: according to following parts by weight take 3 parts of prealloy powder, 40 parts of copper powder, 1 part of glass putty, 56 parts of iron powder are mixed to form diamond saw blade powdered metallurgical material, wherein the prealloy powder is atomized powder, using existing There is the vacuum gas atomization of technology to be made, the raw material including following parts by weight: 30 parts of copper, 35 parts of iron, 5 parts of tin, 15 parts of nickel, cobalt 15 Part, the granularity of the prealloy powder is 100~200 mesh, and the granularity of copper powder is 100~200 mesh, and the granularity of glass putty is 100~200 Mesh, the granularity of iron powder are 100~200 mesh；
Step 2) mixes bortz powder and powdered metallurgical material: by 2 parts of powder metallurgy obtained with step 1) of bortz powder 98 parts of material are mixed and blend together material, and the granularity of the bortz powder is 25~30 mesh, and using three-dimensional material mixer, mixing temperature is 20 DEG C, relative humidity is less than 20%, incorporation time 15min；
Step 3) cold pressing compacting: by step 2) obtain blend together material investment cold stamping die in, in 2s by pressing pressure by Normal pressure is increased to 20t/cm2Pressure, maintain the pressure carry out cold pressing compacting 5s, obtain cold pressing green compact；
Step 4) sintering: the cold pressing green compact that step 3) obtains is put into agglomerating plant, temperature is increased to 870 in 1h DEG C, and temperature 7h is maintained, temperature is then reduced to room temperature in 2h, obtains cutter head.
The diamond saw blade of step 1) is as follows with powdered metallurgical material mixing condition: wetting agent is added, wetting agent Component and parts by weight are 39 parts of glycerol, 10 parts of zinc stearate, 51 parts of isopropanol, and the additional amount of wetting agent is 0.3g/kg diamond Saw blade tip powdered metallurgical material, mixing apparatus use three-dimensional material mixer, and mixing temperature is 15 DEG C, and relative humidity is less than 30%, incorporation time 2h.
The first electroplated pretreatment of the bortz powder of the step 2), coated metal are chromium, and thickness of coating is 2 μm；Then it passes through Cladding pretreatment, the metal of cladding are cobalt, are coated with a thickness of 60 μm.Plating pretreatment and cladding preprocess method institute for example above It states.
This batch obtains diamond saw blade finished product cutter head about 3000.
Obtained diamond saw blade is welded on the outside of matrix, diameter 400mm, the Buddha's warrior attendant of cutter head height 15mm is made Stone saw piece.Using cement concrete pavement (standard C30 cement, concrete are cobblestone, depth of cut 50mm with stone) to obtaining Diamond saw blade tested, cutting speed reaches 2.62 meters/min, and service life reaches 720 meters.
Diamond saw blade is produced using the above method, does not use hot pressing die, production cost is relative to existing gold Hard rock saw blade reduces 30%.
Embodiment 2
Diamond saw blade is manufactured with the following method:
Step 1) prepare powdered metallurgical material: according to following parts by weight take 10 parts of prealloy powder, 20 parts of copper powder, 5 parts of glass putty, 65 parts of iron powder, it is mixed to form diamond saw blade powdered metallurgical material, wherein the prealloy powder is atomized powder, using existing There is the vacuum gas atomization of technology to be made, the raw material including following parts by weight: 50 parts of copper, 15 parts of iron, 20 parts of tin, 3 parts of nickel, cobalt 14 Part, the granularity of the prealloy powder is 200~300 mesh, and the granularity of copper powder is 200~300 mesh, and the granularity of glass putty is 200~300 Mesh, the granularity of iron powder are 200~300 mesh；
Step 2) mixes bortz powder and powdered metallurgical material: by 3 parts of powder metallurgy obtained with step 1) of bortz powder 97 parts of material are mixed and blend together material, and the granularity of the diamond is 30~40 mesh, using three-dimensional material mixer, mixing temperature 15 DEG C, relative humidity is less than 30%, incorporation time 40min；
Step 3) cold pressing compacting: by step 2) obtain blend together material investment cold stamping die in, in 4s by pressing pressure by Normal pressure is increased to 22t/cm2Pressure, maintain the pressure carry out cold pressing compacting 4s, obtain cold pressing green compact；
Step 4) sintering: the cold pressing green compact that step 3) obtains is put into agglomerating plant, temperature is increased to 920 in 2h DEG C, and temperature 0.5h is maintained, temperature is then reduced to room temperature in 2h, obtains cutter head.
The diamond saw blade of the step 1) is as follows with powdered metallurgical material mixing condition: wetting agent is added, moistens The component and parts by weight of agent are 42 parts of glycerol, 9 parts of zinc stearate, 49 parts of isopropanol, and the additional amount of wetting agent is 0.5g/kg Buddha's warrior attendant Stone saw blade tip powdered metallurgical material, mixing apparatus use three-dimensional material mixer, and mixing temperature is 22 DEG C, and relative humidity is less than 20%, incorporation time 3h.
The first electroplated pretreatment of the bortz powder of the step 2), coated metal are chromium, and thickness of coating is 3 μm；Then it passes through Cladding pretreatment, the metal of cladding are cobalt, are coated with a thickness of 50 μm.Plating pretreatment and cladding preprocess method institute for example above It states.
This batch obtains diamond saw blade finished product cutter head about 2900.
Obtained diamond saw blade is welded on the outside of matrix, diameter 400mm, the Buddha's warrior attendant of cutter head height 15mm is made Stone saw piece.Using cement concrete pavement (standard C30 cement, concrete are cobblestone, depth of cut 50mm with stone) to obtaining Diamond saw blade tested, cutting speed reaches 2.64 meters/min, and service life reaches 760 meters.
Diamond saw blade is produced using the above method, does not use hot pressing die, production cost is relative to existing gold Hard rock saw blade reduces 35%.
Embodiment 3
Diamond saw blade is manufactured with the following method:
Step 1) prepare powdered metallurgical material: according to following parts by weight take 10 parts of prealloy powder, 40 parts of copper powder, 5 parts of glass putty, 45 parts of iron powder, it is mixed to form diamond saw blade powdered metallurgical material, wherein the prealloy powder is atomized powder, using existing There is the vacuum gas atomization of technology to be made, the raw material including following parts by weight: 40 parts of copper, 30 parts of iron, 10 parts of tin, 10 parts of nickel, cobalt 10 parts, the granularity of the prealloy powder is 300~400 mesh, and the granularity of copper powder is 300~400 mesh, the granularity of glass putty is 300~ 400 mesh, the granularity of iron powder are 300~400 mesh；
Step 2) mixes bortz powder and powdered metallurgical material: the powder smelting that 4 parts of bortz powder are obtained with step 1) 96 parts of golden material, which is mixed to get, blendes together material, and the granularity of the diamond is 35~40 mesh, and using three-dimensional material mixer, mixing temperature is 25 DEG C, relative humidity is less than 10%, incorporation time 50min；
Step 3) cold pressing compacting: by step 2) obtain blend together material investment cold stamping die in, in 6s by pressing pressure by Normal pressure is increased to 25t/cm2Pressure, maintain the pressure carry out cold pressing compacting 3s, obtain cold pressing green compact；
Step 4) sintering: the cold pressing green compact that step 3) obtains is put into agglomerating plant, temperature is increased to 970 in 3h DEG C, and temperature 0.5h is maintained, temperature is then reduced to room temperature in 2h, obtains cutter head.
The diamond saw blade of the step 1) is as follows with powdered metallurgical material mixing condition: wetting agent is added, moistens The component and parts by weight of agent are 45 parts of glycerol, 7 parts of zinc stearate, 48 parts of isopropanol, and the additional amount of wetting agent is 1.0g/kg Buddha's warrior attendant Stone saw blade tip powdered metallurgical material, mixing apparatus use three-dimensional material mixer, and mixing temperature is 20 DEG C, and relative humidity is less than 10%, incorporation time 1h.
The first electroplated pretreatment of the bortz powder of the step 2), coated metal are cobalt, and thickness of coating is 4 μm；Then it passes through Cladding pretreatment, the metal of cladding are nickel, are coated with a thickness of 80 μm.Plating pretreatment and cladding preprocess method institute for example above It states.
This batch obtains diamond saw blade finished product cutter head about 3600.
Obtained diamond saw blade is welded on the outside of matrix, diameter 400mm, the Buddha's warrior attendant of cutter head height 15mm is made Stone saw piece.Using cement concrete pavement (standard C30 cement, concrete are cobblestone, depth of cut 50mm with stone) to obtaining Diamond saw blade tested, cutting speed reaches 2.7 meters/min, and service life reaches 700 meters.
Diamond saw blade is produced using the above method, does not use hot pressing die, production cost is relative to existing gold Hard rock saw blade reduces 32%.
Embodiment 4
Diamond saw blade is manufactured with the following method:
Step 1) prepare powdered metallurgical material: according to following parts by weight take 8 parts of prealloy powder, 20 parts of copper powder, 2 parts of glass putty, 70 parts of iron powder, it is mixed to form diamond saw blade powdered metallurgical material, wherein the prealloy powder is atomized powder, using existing There is the vacuum gas atomization of technology to be made, the raw material including following parts by weight: 33 parts of copper, 16 parts of iron, 15 parts of tin, 6 parts of nickel, cobalt 30 Part, the granularity of the prealloy powder is 100~300 mesh, and the granularity of copper powder is 100~200 mesh, and the granularity of glass putty is 200~400 Mesh, the granularity of iron powder are 200~320 mesh；
Step 2) mixes bortz powder and powdered metallurgical material: the powder smelting that 5 parts of bortz powder are obtained with step 1) 95 parts of golden material, which is mixed, blendes together material, and the granularity of the diamond is 40~50 mesh, and using three-dimensional material mixer, mixing temperature is 30 DEG C, relative humidity is less than 20%, incorporation time 60min；
Step 3) cold pressing compacting: by step 2) obtain blend together material investment cold stamping die in, in 8s by pressing pressure by Normal pressure is increased to 28t/cm2Pressure, maintain the pressure carry out cold pressing compacting 2s, obtain cold pressing green compact；
Step 4) sintering: the cold pressing green compact that step 3) obtains is put into agglomerating plant, temperature is increased to 890 in 3h DEG C, and temperature 1.5h is maintained, temperature is then reduced to room temperature in 1h, obtains cutter head.
The diamond saw blade of the step 1) is as follows with powdered metallurgical material mixing condition: wetting agent is added, moistens The component and parts by weight of agent are 40 parts of glycerol, 12 parts of zinc stearate, 48 parts of isopropanol, and the additional amount of wetting agent is 1.6g/kg gold Hard rock saw blade tip powdered metallurgical material, mixing apparatus use three-dimensional material mixer, and mixing temperature is 26 DEG C, and relative humidity is less than 30%, incorporation time 2h.
The first electroplated pretreatment of the bortz powder of the step 2), coated metal are cobalt, and thickness of coating is 6 μm；Then it passes through Cladding pretreatment, the metal of cladding are titanium, are coated with a thickness of 120 μm.Plating pretreatment and cladding preprocess method institute for example above It states.
This batch obtains diamond saw blade finished product cutter head about 4000.
Obtained diamond saw blade is welded on the outside of matrix, diameter 400mm, the Buddha's warrior attendant of cutter head height 15mm is made Stone saw piece.Using cement concrete pavement (standard C30 cement, concrete are cobblestone, depth of cut 50mm with stone) to obtaining Diamond saw blade tested, cutting speed reaches 2.6 meters/min, and service life reaches 780 meters.
Diamond saw blade is produced using the above method, does not use hot pressing die, production cost is relative to existing gold Hard rock saw blade reduces 39%.
Embodiment 5
Diamond saw blade is manufactured with the following method:
Step 1) prepare powdered metallurgical material: according to following parts by weight take 5 parts of prealloy powder, 30 parts of copper powder, 3 parts of glass putty, 62 parts of iron powder, it is mixed to form diamond saw blade powdered metallurgical material, wherein the prealloy powder is atomized powder, using existing There is the vacuum gas atomization of technology to be made, the raw material including following parts by weight: 45 parts of copper, 20 parts of iron, 8 parts of tin, 7 parts of nickel, cobalt 20 Part, the granularity of the prealloy powder is 200~300 mesh, and the granularity of copper powder is 200~280 mesh, and the granularity of glass putty is 100~230 Mesh, the granularity of iron powder are 100~220 mesh；
Step 2) mixes bortz powder and powdered metallurgical material: by 6 parts of powder metallurgy obtained with step 1) of bortz powder 94 parts of material are mixed and blend together material, and the granularity of the diamond is 45~55 mesh, using three-dimensional material mixer, mixing temperature 20 DEG C, relative humidity is less than 30%, incorporation time 30min；
Step 3) cold pressing compacting: by step 2) obtain blend together material investment cold stamping die in, in 10s by pressing pressure by Normal pressure is increased to 30t/cm2Pressure, maintain the pressure carry out cold pressing compacting 1s, obtain cold pressing green compact；
Step 4) sintering: the cold pressing green compact that step 3) obtains is put into agglomerating plant, is increased to temperature in 2.8h 940 DEG C, and temperature 0.7h is maintained, temperature is then reduced to room temperature in 1.6h, obtains cutter head.
The diamond saw blade of the step 1) is as follows with powdered metallurgical material mixing condition: wetting agent is added, moistens The component and parts by weight of agent are 45 parts of glycerol, 12 parts of zinc stearate, 43 parts of isopropanol, and the additional amount of wetting agent is 2.0g/kg gold Hard rock saw blade tip powdered metallurgical material, mixing apparatus use three-dimensional material mixer, and mixing temperature is 26 DEG C, and relative humidity is less than 30%, incorporation time 2h.
The first electroplated pretreatment of the bortz powder of the step 2), coated metal are nickel, and thickness of coating is 3 μm；Then it passes through Cladding pretreatment, the metal of cladding are cobalt, are coated with a thickness of 150 μm.Plating pretreatment and cladding preprocess method institute for example above It states.
This batch obtains diamond saw blade finished product cutter head about 2200.
Obtained diamond saw blade is welded on the outside of matrix, diameter 400mm, the Buddha's warrior attendant of cutter head height 15mm is made Stone saw piece.Using cement concrete pavement (standard C30 cement, concrete are cobblestone, depth of cut 50mm with stone) to obtaining Diamond saw blade tested, cutting speed reaches 2.8 meters/min, and service life reaches 800 meters.
Diamond saw blade is produced using the above method, does not use hot pressing die, production cost is relative to existing gold Hard rock saw blade reduces 36%.
Embodiment 6
Diamond saw blade is manufactured with the following method:
Step 1) prepare powdered metallurgical material: according to following parts by weight take 7 parts of prealloy powder, 35 parts of copper powder, 4 parts of glass putty, 54 parts of iron powder, it is mixed to form diamond saw blade powdered metallurgical material, wherein the prealloy powder is atomized powder, using existing There is the vacuum gas atomization of technology to be made, the raw material including following parts by weight: 35 parts of copper, 25 parts of iron, 12 parts of tin, 3 parts of nickel, cobalt 25 Part, the granularity of the prealloy powder is 100~150 mesh, and the granularity of copper powder is 200~300 mesh, and the granularity of glass putty is 300~350 Mesh, the granularity of iron powder are 160~280 mesh；
Step 2) mixes bortz powder and powdered metallurgical material: the powder smelting that 7 parts of bortz powder are obtained with step 1) 93 parts of golden material, which is mixed, blendes together material, and the granularity of the diamond is 55~65 mesh, and using three-dimensional material mixer, mixing temperature is 18 DEG C, relative humidity is less than 30%, incorporation time 40min；
Step 3) cold pressing compacting: by step 2) obtain blend together material investment cold stamping die in, in 6s by pressing pressure by Normal pressure is increased to 30t/cm2Pressure, maintain the pressure carry out cold pressing compacting 4s, obtain cold pressing green compact；
Step 4) sintering: the cold pressing green compact that step 3) obtains is put into agglomerating plant, is increased to temperature in 4.1h 960 DEG C, and temperature 0.9h is maintained, temperature is then reduced to room temperature in 1h, obtains cutter head.
The diamond saw blade of the step 1) is as follows with powdered metallurgical material mixing condition: wetting agent is added, moistens The component and parts by weight of agent are 45 parts of glycerol, 12 parts of zinc stearate, 38 parts of isopropanol, and the additional amount of wetting agent is 1.2g/kg gold Hard rock saw blade tip powdered metallurgical material, mixing apparatus use three-dimensional material mixer, and mixing temperature is 30 DEG C, and relative humidity is less than 20%, incorporation time 2h.
The first electroplated pretreatment of the bortz powder of the step 2), coated metal are nickel, and thickness of coating is 5 μm；Then it passes through Cladding pretreatment, the metal of cladding are nickel, are coated with a thickness of 180 μm.Plating pretreatment and cladding preprocess method institute for example above It states.
This batch obtains diamond saw blade finished product cutter head about 3800.
Obtained diamond saw blade is welded on the outside of matrix, diameter 400mm, the Buddha's warrior attendant of cutter head height 15mm is made Stone saw piece.Using cement concrete pavement (standard C30 cement, concrete are cobblestone, depth of cut 50mm with stone) to obtaining Diamond saw blade tested, cutting speed reaches 2.72 meters/min, and service life reaches 750 meters.
Diamond saw blade is produced using the above method, does not use hot pressing die, production cost is relative to existing gold Hard rock saw blade reduces 42%.
Embodiment 7
Diamond saw blade is manufactured with the following method:
Step 1) prepare powdered metallurgical material: according to following parts by weight take 9 parts of prealloy powder, 25 parts of copper powder, 5 parts of glass putty, 61 parts of iron powder, it is mixed to form diamond saw blade powdered metallurgical material, wherein the prealloy powder is atomized powder, using existing There is the vacuum gas atomization of technology to be made, the raw material including following parts by weight: copper 42, iron 18, tin 18, nickel 12, cobalt 10, it is described pre- The granularity of alloyed powder is 100~200 mesh, and the granularity of copper powder is 100~220 mesh, and the granularity of glass putty is 200~240 mesh, iron powder Granularity is 160~260 mesh；
Step 2) mixes bortz powder and powdered metallurgical material: by 7 parts of powder metallurgy obtained with step 1) of bortz powder 93 parts of material are mixed and blend together material, and the granularity of the diamond is 60~70 mesh, using three-dimensional material mixer, mixing temperature 28 DEG C, relative humidity is less than 20%, incorporation time 50min；
Step 3) cold pressing compacting: by step 2) obtain blend together material investment cold stamping die in, in 8s by pressing pressure by Normal pressure is increased to 20t/cm2Pressure, maintain the pressure carry out cold pressing compacting 3s, obtain cold pressing green compact；
Step 4) sintering: the cold pressing green compact that step 3) obtains is put into agglomerating plant, is increased to temperature in 2.2h 900 DEG C, and temperature 1.2h is maintained, temperature is then reduced to room temperature in 1.8h, obtains cutter head.
The diamond saw blade of the step 1) is as follows with powdered metallurgical material mixing condition: wetting agent is added, moistens The component and parts by weight of agent are 40 parts of glycerol, 12 parts of zinc stearate, 48 parts of isopropanol, and the additional amount of wetting agent is 1.4g/kg gold Hard rock saw blade tip powdered metallurgical material, mixing apparatus use three-dimensional material mixer, and mixing temperature is 17 DEG C, and relative humidity is less than 20%, incorporation time 3h.
The first electroplated pretreatment of the bortz powder of the step 2), coated metal are nickel, and thickness of coating is 10 μm；Then it passes through Cladding pretreatment, the metal of cladding are titanium, are coated with a thickness of 200 μm.Plating pretreatment and cladding preprocess method institute for example above It states.
This batch obtains diamond saw blade finished product cutter head about 3400.
Obtained diamond saw blade is welded on the outside of matrix, diameter 400mm, the Buddha's warrior attendant of cutter head height 15mm is made Stone saw piece.Using cement concrete pavement (standard C30 cement, concrete are cobblestone, depth of cut 50mm with stone) to obtaining Diamond saw blade tested, cutting speed reaches 2.74 meters/min, and service life reaches 790 meters.
Diamond saw blade is produced using the above method, does not use hot pressing die, production cost is relative to existing gold Hard rock saw blade reduces 38%.
Embodiment 8
Diamond saw blade is manufactured with the following method:
Step 1) prepare powdered metallurgical material: according to following parts by weight take 10 parts of prealloy powder, 20 parts of copper powder, 5 parts of glass putty, 65 parts of iron powder, it is mixed to form diamond saw blade powdered metallurgical material, wherein the prealloy powder is atomized powder, using existing There is the vacuum gas atomization of technology to be made, the raw material including following parts by weight: 42 parts of copper, 18 parts of iron, 18 parts of tin, 12 parts of nickel, cobalt 10 parts, the granularity of the prealloy powder is 100~200 mesh, and the granularity of copper powder is 100~220 mesh, the granularity of glass putty is 200~ 240 mesh, the granularity of iron powder are 160~260 mesh；
Step 2) mixes bortz powder and powdered metallurgical material: by 6 parts of powder metallurgy obtained with step 1) of bortz powder 94 parts of material are mixed and blend together material, and the granularity of the diamond is 60~70 mesh, using three-dimensional material mixer, mixing temperature 30 DEG C, relative humidity is less than 30%, incorporation time 20min；
Step 3) cold pressing compacting: by step 2) obtain blend together material investment cold stamping die in, in 6s by pressing pressure by Normal pressure is increased to 23t/cm2Pressure, maintain the pressure carry out cold pressing compacting 3s, obtain cold pressing green compact；
Step 4) sintering: the cold pressing green compact that step 3) obtains is put into agglomerating plant, is increased to temperature in 2.1h 910 DEG C, and temperature 1.4h is maintained, temperature is then reduced to room temperature in 2h, obtains cutter head.
The diamond saw blade of the step 1) is as follows with powdered metallurgical material mixing condition: wetting agent is added, moistens The component and parts by weight of agent are 40 parts of glycerol, 12 parts of zinc stearate, 48 parts of isopropanol, and the additional amount of wetting agent is 1.4g/kg gold Hard rock saw blade tip powdered metallurgical material, mixing apparatus use three-dimensional material mixer, and mixing temperature is 17 DEG C, and relative humidity is less than 20%, incorporation time 3h.
The first electroplated pretreatment of the bortz powder of the step 2), coated metal are cobalt, and thickness of coating is 10 μm；Then it passes through Cladding pretreatment, the metal of cladding are titanium, are coated with a thickness of 110 μm.Plating pretreatment and cladding preprocess method institute for example above It states.
The bortz powder of the step 2) is to be coated pretreated bortz powder, and the metal of cladding is titanium, cladding processing Method it is as described above, coat with a thickness of 110 μm.
This batch obtains diamond saw blade finished product cutter head about 3100.
Obtained diamond saw blade is welded on the outside of matrix, diameter 400mm, the Buddha's warrior attendant of cutter head height 15mm is made Stone saw piece.Using cement concrete pavement (standard C30 cement, concrete are cobblestone, depth of cut 50mm with stone) to obtaining Diamond saw blade tested, cutting speed reaches 2.78 meters/min, and service life reaches 790 meters.
Diamond saw blade is produced using the above method, does not use hot pressing die, production cost is relative to existing gold Hard rock saw blade reduces 37%.
Comparative example 1
Diamond saw blade is manufactured using the method for the prior art:
Step 1) prepares powdered metallurgical material: preparing diamond saw blade powder metallurgy material according to following parts by weight Material: 27 parts of copper, 25 parts of tin, 22 parts of iron, 2 parts of nickel, 47 parts of prealloy, wherein prealloy is made of the metal of following parts by weight: iron 69 parts, 16 parts of cobalt, 15 parts of copper, are put into mixing tank mixing 30min for above-mentioned material, obtain diamond saw blade powder metallurgy Material；
Step 2) mixing diamond and powdered metallurgical material: by above-mentioned steps 1) obtained diamond saw blade powder Metallurgical material is mixed with diamond, and the weight ratio of diamond and diamond saw blade powdered metallurgical material is 4:100, will be upper It states and wetting agent (component and parts by weight of wetting agent are 40 parts of glycerol, 10 parts of zinc stearate, 50 parts of isopropanol) is added in material, add Entering amount is 2.2g/kg diamond saw blade powdered metallurgical material, is put into mixing tank and mixes 2~3h；
Step 3) cold pressing compacting: by above-mentioned steps 2) obtained mixed material is put into cold stamping die, it is cold-pressed pressing pressure For 5t/cm2, pressing time 5min, obtain cutter head cold pressing green compact；
Step 4) hot pressed sintering: the cutter head cold pressing green compact that step 3) obtains is put into graphite hot pressing sintering mold, is put together Enter in pressing sintering in 850 DEG C of temperature, pressure 5t/cm2Under conditions of, it is sintered, sintering time 9min.
This batch obtains diamond saw blade finished product cutter head about 30.
Obtained diamond saw blade is welded on the outside of matrix, diameter 400mm, the Buddha's warrior attendant of cutter head height 15mm is made Stone saw piece.Using cement concrete pavement (standard C30 cement, concrete are cobblestone, depth of cut 50mm with stone) to obtaining Diamond saw blade tested, cutting speed reaches 1.8 meters/min, and service life reaches 500 meters.
Comparative example 2
Diamond saw blade is manufactured using the method for the prior art:
Step 1) prepares powdered metallurgical material: preparing diamond saw blade powder metallurgy material according to following parts by weight Material: 26 parts of copper, 26 parts of tin, 24 parts of iron, 3 parts of nickel, 50 parts of prealloy, wherein prealloy is made of the metal of following parts by weight: iron 68 parts, 18 parts of cobalt, 16 parts of copper, are put into mixing tank mixing 30min for above-mentioned material, obtain diamond saw blade powder metallurgy Material；
Step 2) mixing diamond and powdered metallurgical material: by above-mentioned steps 1) obtained diamond saw blade powder Powder metallurgy material is mixed with diamond, and the weight ratio of diamond and diamond saw blade powdered metallurgical material is 5:100, will Wetting agent (component and parts by weight of wetting agent are 40 parts of glycerol, 10 parts of zinc stearate, 50 parts of isopropanol) is added in above-mentioned material, Additional amount is 2.0g/kg diamond saw blade powdered metallurgical material, is put into mixing tank and mixes 2~3h；
Step 3) cold pressing compacting: by above-mentioned steps 2) obtained mixed material is put into cold stamping die, it is cold-pressed pressing pressure For 6t/cm2, pressing time 4min, obtain cutter head cold pressing green compact；
Step 4) hot pressed sintering: the cutter head cold pressing green compact that step 3) obtains is put into hot pressed sintering mold, is put into heat together It presses in sintering machine in 860 DEG C of temperature, pressure 4t/cm2Under conditions of, it is sintered, sintering time 15min.
This batch obtains diamond saw blade finished product cutter head about 28.
Obtained diamond saw blade is welded on the outside of matrix, diameter 400mm, the Buddha's warrior attendant of cutter head height 15mm is made Stone saw piece.Using cement concrete pavement (standard C30 cement, concrete are cobblestone, depth of cut 50mm with stone) to obtaining Diamond saw blade tested, cutting speed reaches 1.8 meters/min, and service life reaches 500 meters.
In conclusion compared with existing technique, using diamond saw blade preparation method of the invention, without using heat Press sintering mold；The service life of the cutter head obtained using the preparation method manufacture diamond saw blade is set to increase by 40%~60%, And its drilling speed is made to improve 44%~56%, production cost reduces 31% or more, and the production efficiency of cutter head improves 10 times.

Claims (7)

1. a kind of diamond saw blade preparation method, which comprises the following steps:
Step 1) prepares powdered metallurgical material: taking 3~10 parts of prealloy powder, 20~40 parts of copper powder, glass putty 1 according to following parts by weight ~5 parts and 45~70 parts of iron powder, it is mixed to form diamond saw blade powdered metallurgical material；Wherein the prealloy powder includes The raw material of following parts by weight: 30~50 parts of copper, 15~35 parts of iron, 5~20 parts of tin, 3~15 parts of nickel, 10~30 parts of cobalt；
Step 2) mixing bortz powder and powdered metallurgical material: it will be obtained by 2~7 parts of pretreated bortz powder with step 1) 93~98 parts of powdered metallurgical material be mixed and blend together material；It is described pre- including first passing through plating by pretreated bortz powder Processing, plating thickness are 2~10 μm, are pre-processed using cladding, and coating thickness is 50~200 μm, the bortz powder Granularity be 25~70 mesh；
Step 3) cold pressing compacting: by step 2) obtain blend together material investment cold stamping die in carry out cold pressing compacting, obtain cold pressing pressure Base；
Step 4) sintering: the cold pressing green compact that step 3) obtains is put into agglomerating plant and is sintered, cutter head is obtained.
2. diamond saw blade preparation method according to claim 1, which is characterized in that the prealloy powder is atomization Powder, granularity are 100~400 mesh, and the granularity of copper powder is 100~400 mesh, and the granularity of glass putty is 100~400 mesh, the grain of iron powder Degree is 100~400 mesh.
3. diamond saw blade preparation method according to claim 1, which is characterized in that the gold of the step 2) electroplated layer Belonging to includes at least one of nickel, cobalt, chromium, and the metal of the clad includes having good wet angle with diamond and capable of being formed At least one of the metal of strong carbide, the metal for having good wet angle with diamond and capable of forming strong carbide include Cobalt, nickel, titanium.
4. diamond saw blade preparation method according to claim 1, which is characterized in that cold pressing compacting in the step 3) Pressure be 20~30t/cm2, the time for being cold-pressed compacting is 1~5s.
5. diamond saw blade preparation method according to claim 1, which is characterized in that the temperature being sintered in the step 4) Degree is 870~970 DEG C, and the time of sintering is 3~6h.
6. diamond saw blade preparation method according to claim 1, which is characterized in that the step 4) sintering is in hydrogen It is sintered under gas atmosphere.
7. a kind of diamond saw blade, which is characterized in that the diamond saw blade includes using claim 1 to 6 times The cutter head that one diamond saw blade preparation method obtains.
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CN111570800A (en) * 2020-05-03 2020-08-25 南通捷越机电有限公司 Preparation process of high-performance diamond saw blade
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CN114472889A (en) * 2021-12-28 2022-05-13 苏州赛尔科技有限公司 Metal bond ultrathin super-precision cutting knife and preparation method thereof
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