CN106906397A - Iron nickel for cobalt, titanium for part tungsten novel hard alloy and its production technology - Google Patents
Iron nickel for cobalt, titanium for part tungsten novel hard alloy and its production technology Download PDFInfo
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- CN106906397A CN106906397A CN201710035522.9A CN201710035522A CN106906397A CN 106906397 A CN106906397 A CN 106906397A CN 201710035522 A CN201710035522 A CN 201710035522A CN 106906397 A CN106906397 A CN 106906397A
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- iron nickel
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/08—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
- C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
Abstract
The present invention provide a kind of iron nickel for cobalt, titanium for part tungsten novel hard alloy and its production technology.The iron nickel is 60~80 by the weight ratio of tungsten carbide, titanium carbide, iron nickel composite powder, cobalt powder, chromium carbide for the novel hard alloy of part tungsten for cobalt, titanium:3~10：10~20：1：0.35~0.7 hard alloy being made for raw material.The iron nickel that the present invention is provided uses iron nickel for cobalt for cobalt, titanium for the novel hard alloy of part tungsten, novel hard alloy material of the titanium for part tungsten, solve cobalt hold at high price, tungsten-cobalt resource problem less and less, production technology reduces environmental pollution, eliminates security hidden trouble, the quality of the compressing performance of hard alloy and Hardmetal materials is ensure that simultaneously, with extensive and long-range application prospect.
Description
Technical field
It is new for part tungsten for cobalt, titanium the invention belongs to CEMENTED CARBIDE PRODUCTION technical field, more particularly to a kind of iron nickel
Hard alloy and its production technology.
Background technology
With the fast development of industrial technology, sintered-carbide tool material is quickly deep into industrial every aspect,
Original high speed steel material is progressively instead of, and shows unrivaled excellent properties.Hard alloy main component is carbon
Change tungsten (WC), because cobalt powder has good wettability to tungsten, so typically doing bonding phase with cobalt, given birth to using powder metallurgy process
Produce, with wearability and intensity very high, its high-wearing feature makes its service life improve tens very than high-speed steel class instrument
To hundreds of times, productivity effect is greatly improved, reduce waste, reduce production cost, obtained the accreditation of industry.Due to
The demand of hard alloy is increasing, and the resource of tungsten and cobalt is fewer and feweri, so the experts and scholars of countries in the world are in recent years
The new resources of new Hardmetal materials are being studied, for cobalt, titanium is for tungsten into hot topic in recent years for iron nickel.
CEMENTED CARBIDE PRODUCTION process generally comprises dispensing, wet-milling, drying, mixes forming agent, granulation, compressing, de- shaping
The steps such as agent, sintering, the forming agent that the typically use of hard alloy cutting tool is prepared in the prior art is rubber, by rubber work
Some residual ashes are had after the sintering hard alloy material of skill shaping in product, product use quality are influenceed to a certain extent,
And rubber process composition is relative complex, it is necessary to make solvent with gasoline, make degumming carrier gas with hydrogen, the safety that increased production is endangered
It is dangerous.There is also in the prior art and make forming agent using paraffin, but operating method is bothered, and also paraffin is difficult to mix uniform or holds
Paraffin segregation is easily caused, processability and product quality is had a strong impact on.
Chinese patent application (application number：201010273174.7, Authorization Notice No. CN101921924B) disclose one kind
The method of doping paraffin forming agent in cemented carbide mixture.It is by melted paraffin wax into molten mass, while hard is closed
Golden wet-milling mixed material heating, to the paraffin that fusing is added in hard alloy wet-milling compound, continues to higher than paraffin melting point temperature
Hard alloy wet-milling compound is heated and stirred, after hard alloy wet-milling compound reaches dries requirement, is entered according to a conventional method
Row sieving and granulation, obtain qualified carbide alloy mixture.The present invention is by the drying of hard alloy wet-milling compound, paraffin
Add and stir and concentrate on completion in a link and equipment, and need not be kept away using gasoline or other solvents dissolving paraffin
Exempt from being mixed into for impurities in solvent, and reduce production cost, it is small, simple to operate and hard with process is simple, equipment investment
Matter alloy wet-milling mixture quality advantage high.But its deficiency is：By the good hard alloy wet-milling compound of wet-milling in double Z
Added when being dried in de-airing mixer, and to be heated to more than 65 DEG C, at this moment the alcohol in slurry is largely vaporized, now go to add
Paraffin is absolutely unsafe, and dead angle is many during the stirring of double Z de-airing mixers, and paraffin is difficult to be well mixed in compound, can be tight
Ghost image rings the compressing performance of hard alloy, and hole can be also caused during paraffin swarms, influences hard alloy matter.
The content of the invention
Ash can be remained for the above-mentioned existing Hardmetal materials production and application rubber process of solution carries out shaping to hard alloy
Powder, influences product use quality or makees forming agent in the presence of being difficult to be well mixed in compound using paraffin, influences hard conjunction
The compressing performance of gold, hard alloy quality and there is a problem of potential safety hazard, and for the hard of prior art production
Matter alloy material, primary raw material are tungsten and cobalt, and tungsten and cobalt all resources are in great shortage, and particularly cobalt is especially in great shortage strategic materials,
Hold at high price, and the hard alloy market demand is increasing, tungsten-cobalt resource is fewer and feweri, but iron nickel and titanium ore hide phase
When abundant, and cheap technical problem, the present invention provide a kind of performance that ensure that hard alloy is compressing and
The special excellent properties of inexpensive Hardmetal materials, while make carrier gas with argon gas when carbide alloy mixture is sintered dewax,
Paraffin is reclaimed, the use quality of product is greatly improved, is reduced pollution, reduce the iron nickel generation of potential safety hazard
Cobalt, novel hard alloy and its production technology of the titanium for part tungsten.
The iron nickel that the present invention is provided is combined for the novel hard alloy of part tungsten for cobalt, titanium by tungsten carbide, titanium carbide, iron nickel
Powder, cobalt powder, the weight ratio of chromium carbide are 60~80:3~10：10~20：1：0.35~0.7 closes for the hard that raw material are made
Gold.
The iron nickel provided in the present invention for cobalt, titanium for the novel hard alloy of part tungsten production technology, including following step
Suddenly：
Step one, raw material mixed grinding：By the tungsten carbide, titanium carbide, iron nickel composite powder, cobalt powder, chromium carbide with weight
Than being 60~80:3~10：10~20：1：0.35~0.7 adds mixing in wet milk, and adds grinding rod to be ground；
Step 2, addition abrasive media and forming agent：The forming agent be paraffin, specially 58 DEG C fully refined paraffin wax, plus
Heat melt after before wet-milling terminates 24 hours or so or start wet-milling be added to afterwards in the wet milk within 5 hours
Step 3, filter, sieve and dry：Wet-milling slurry after the step 2 is filtered, is sieved, and dried；
It is step 4, compressing：The material grain that sieve will be wiped by screen cloth is pressed, and obtains semi-finished product；
Step 5, sinter molding：Semi-finished product after compacting are put into after being sintered in sintering furnace, are got product after cooling.
The iron nickel provided in the present invention is preferably implemented for cobalt, titanium for production technology one kind of the novel hard alloy of part tungsten
In example, in the step one, the wet milk can incline wet milk for 300L.
The iron nickel provided in the present invention is preferably implemented for cobalt, titanium for production technology one kind of the novel hard alloy of part tungsten
In example, in the step one, the grinding rod is baseball, and a diameter of 5.5-10.5cm is highly 14.4-17cm.
The iron nickel provided in the present invention is preferably implemented for cobalt, titanium for production technology one kind of the novel hard alloy of part tungsten
In example, iron nickel powder described in the step one, the granularity of cobalt powder be less than 2um, the granularity of described chromium carbide be less than
2.0um, the tungsten carbide is made up of the titanium carbide that particle diameter is 0.8~3.0um tungsten carbides and 0.8~3um, and the weight ratio of the two is
60~80:3~10, the iron nickel composite powder, cobalt powder are less than 2.0um, iron powder, nickel powder, the weight ratio of cobalt powder three by particle diameter
It is 10:3：1, the weight ratio of the raw material that the grinding rod is made into tungsten carbide, titanium carbide, iron nickel composite powder, cobalt powder, chromium carbide
It is 4~5:1, the grinding rod is baseball, and a diameter of 5.5-10.5cm is highly 14.4-17cm.
The iron nickel provided in the present invention is preferably implemented for cobalt, titanium for production technology one kind of the novel hard alloy of part tungsten
In example, in the step 2, the abrasive media is the ethanol of concentration >=95%, and ethanol is combined with tungsten carbide, titanium carbide, iron nickel
The liquid-solid ratio of the raw material that powder, cobalt powder, chromium carbide are made into is 220~300mL/Kg, and the wet-milling time is 25~60 hours；Paraffin with
The mass ratio of the raw material that tungsten carbide, titanium carbide, iron nickel composite powder, cobalt powder, chromium carbide are made into is 1.8~2.5:100.
The iron nickel provided in the present invention is preferably implemented for cobalt, titanium for production technology one kind of the novel hard alloy of part tungsten
In example, in the step 2, the baseball format diameter is respectively adopted 10.5cm, 9.5cm, 8.5cm, 7.3cm, 5.5cm, correspondence
The height of baseball is respectively 17cm, 16.7cm, 16.3cm, 15.6cm, 14.4cm, correspondence add ratio be respectively 3%, 33%,
32.5%th, 16%, 15.5%..
The iron nickel provided in the present invention is preferably implemented for cobalt, titanium for production technology one kind of the novel hard alloy of part tungsten
In example, in the step 3, simultaneously drying process specifically includes following steps for filtering, screening：
Step 3 one, the stainless steel mesh sieving wet-milling slurry using 400-500 mesh, are processed, to screening using pre-filtering
Material first carries out filtration treatment；
Step 3 two, reclaimed using the double Z mixing of 300L, vacuum, ethanol, hot water drying system to sieving in step 3 one after
Compound be dried, the drying time be 8~12 hours, hot water drying temperature be 90~95 DEG C；
Step 3 three, the stainless steel mesh dried compound of sieving using 50-70 mesh, are processed using pre-filtering, right
Screening materials carrying first carries out filtration treatment.
The iron nickel provided in the present invention is preferably implemented for cobalt, titanium for production technology one kind of the novel hard alloy of part tungsten
In example, sinter molding in the step 5 in conventional vacuum sintering integrated furnace specifically, sinter to 1380~1450 DEG C, insulation
50~120 minutes, it is cooled to room temperature and comes out of the stove and obtain final product Hardmetal materials.
The iron nickel provided in the present invention is preferably implemented for cobalt, titanium for production technology one kind of the novel hard alloy of part tungsten
In example, pellet described in the step 4 and the step 5 is compressing, be passed through argon gas during sinter molding, and to described
Forming agent is recycled.
Iron nickel of the invention has following beneficial effect for cobalt, titanium for the novel hard alloy and its production technology of part tungsten
Really：
Using iron nickel for cobalt, titanium for part tungsten novel hard alloy material, the Hardmetal materials of prior art production,
Primary raw material is tungsten and cobalt, and tungsten and cobalt all resources are in great shortage, and particularly cobalt is especially in great shortage strategic materials, and price occupies height not
Under, and the hard alloy market demand is increasing, tungsten-cobalt resource is fewer and feweri, but iron nickel and titanium ore are hidden and quite enrich, and
And cheap technical problem.
Use the fully refined paraffin wax that fusing point is 58 DEG C as forming agent, mixing for wet-milling is added directly into after heating melting
Close in the wet milk of slurry, rewetting is ground 24 hours or so together with compound, by drying, granulation, compressing, de- shaping
Agent, vacuum-sintering are prepared and draw a kind of low cost, performance hard alloy new material high；And made using argon gas in sintering process
Carrier gas, recycles to paraffin.Reduce environmental pollution, eliminate security hidden trouble, while ensure that hard alloy
Compressing performance and the quality of Hardmetal materials, with extensive and long-range application prospect.Ensure that hard alloy
Compressing performance and the special excellent properties of inexpensive Hardmetal materials, while being used when carbide alloy mixture is sintered
Argon gas makees carrier gas dewaxing, and paraffin is reclaimed, and greatly improves the use quality of product, reduces pollution, reduces peace
Full hidden danger.
Using wax moulding production technology, substitute traditional rubber production technology, it is to avoid rubber needs aviation gasoline molten
Solution, rubber process product needs hydrogen as carrier gas when sintering, and processes rubber waste gas with the method for burning, both contaminated equipment with
Environment, the situation that there is the potential safety hazard of highly dangerous again, while having residual in product after the product for avoiding rubber process is sintered
Ashes is stayed, influences the situation of product use quality to occur；Fusing point is used for 58 DEG C of fully refined paraffin wax, as long as heating and melting can
To be directly added into wet milk, while when paraffin technology product is sintered, making carrier gas using argon gas and dewaxing, paraffin is reclaimed
Treatment, reduces dangerous and pollution, while improve the use quality of product.
Melt paraffin is directly added into the wet milk of the slurry of wet-milling heating, rewetting mill 24 is small together with compound
When or so；Because the liquid of mixed slurry is ethanol, paraffin can be dissolved in hot ethanol, and plus the long-time of more than 24 hours Zuo You
Wet-milling mixing, paraffin in wet milk just can well-proportioned parcel compound grain, such safe operation saves trouble, can prevent well
Only compound oxygenation, it is ensured that the quality of the Hardmetal materials of preparation.
With the use of vacuum, stirring, hot water drying system, the twin-tub for using compared to existing technology, vibration, steam drying,
It is easy to operate, it is time saving and energy saving；Hot water is higher to the safety coefficient of equipment and people than steam；Stir and mixed than the hard alloy of vibration drying
Close material be heated evenly, the quality stability of compound it is good；Twin-tub, vibration, the rubber process of steam drying, lean on completely when drying
Vapour pressure protects raw material, and raw material is to unload out again after making a good job of to mix forming agent, and now the surface of raw material can be very big, holds very much
Oxidizable, oxygen content is uncontrollable in raw material, so as to have a strong impact on alloy product quality；Vacuum drying of the invention is to use vacuum
To protect by dry raw material, due to paraffin be just be added in wet-milling in wet milk and raw material be mixed together, it is dried after
Just there is one layer of parafilm wrap on raw material surface, raw material and air have been completely cut off well, protection raw material will not be oxidized, can effectively control
Oxygen content in raw material processed, it is ensured that the quality of alloy product；
Using double Z mixing, vacuum, ethanol recovery, hot water drying system, ethanol recovery is high；The twin-tub of prior art, shake
Ethanol in dynamic, steam drying raw material, it is simple when drying to be directly accessed stainless steel cask with a rubber tube, add steam and add
Heat, more than 100 DEG C, ethanol is difficult to reclaim alcohol gas temperature, is substantially all and goes to be gone in air；Invention increases one
The ethanol recovery system of cuff chilled water, ethanol recovery reduces ethanol waste up to more than 90%, has saved and has been produced into
This, while reducing environmental pollution；
It is 5.5~10.5cm to use format diameter, is highly the grinding baseball of 14.4cm~17cm, this special grinding
Bar gauge lattice cause that grinding baseball is sufficiently mixed with hard alloy material, obtain good wet-milling effect；
Grinding rod ball format diameter is respectively adopted 10.5cm, 9.5cm, 8.5cm, 7.3cm, 5.5cm, the height of correspondence baseball
Be respectively adopted 17cm, 16.7cm, 16.3cm, 15.6cm, 14.4cm, correspondence add ratio difference 3%, 33%, 32.5%,
16%th, 15.5%, it is this special than arranging combination to ensure grinding rod and the best contact area of hard alloy material, obtain best
Wet-milling effect；
Wet-milling time control reached best wet-milling effect at 36~60 hours with the time for ensureing most short；
Stainless steel mesh selects 400-500 mesh, can effectively prevent the granule debris such as grinding rod chip from entering qualified slurry
Cause product dirtyization；
Granularity from cobalt powder is 1.0~2.0um, because cobalt powder more thin dispersiveness in the alloy is better, and due to former material
Material main component is the WC that granularity is 0.6~1.0um, is fine grained, and cobalt powder is thinner, and both contacts area are also bigger, alloy
Toughness is better, so as to ensure that the toughness of hard alloy, while the cost for making is in contrast than convenient；
Granularity from chromium carbide is 1.0~2.0um, and chromium carbide mainly plays suppression tungsten carbide crystal grain and grows up,
Grain is thinner, and inhibitory action is better, while the cost for making is in contrast than convenient；
Tungsten carbide is 0.6~1.0um by particle diameter and the tungsten carbide of 3~6um is constituted, and the mass ratio of the two is 70~90:10
~30, raw material uses special combination of materials：Granularity is the WC of the WC and 3~6um of 0.6~1.0um, and wherein granularity is 3~6um
WC uniformly dislocation is filled in the WC that granularity is 0.6~1.0um, both can ensure that the sharp cutting resistance of the edge of a knife was small, and effectively
Tear curve during alloy chipping is changed, toughness is enhanced, while avoid edge of a knife when lathe is beated well easily bursting apart
Problem, ensure that in the excellent cutting effect and superpower service life compared with adverse circumstances bottom tool；Greatly improve
Stock-removing efficiency and cutting quality, reduce the serious waste of material, enhance the market competitiveness；Experiments verify that 0.6~
The mass ratio of the WC of the WC and 3~6um of 1.0um is 70~90:The material of obtained hard alloy cutting tool when 10~30
Effect preferably, property indices are good.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be to that will make needed for embodiment description
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing, wherein：
Fig. 1 is that the iron nickel that the present invention is provided is implemented for cobalt, titanium for production technology one kind of the novel hard alloy of part tungsten
The process chart of example；
Fig. 2 is filtering, sieve of the iron nickel of present invention offer for cobalt, titanium for the production technology of the novel hard alloy of part tungsten
Divide and a kind of process chart of embodiment of drying process.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is all other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The iron nickel for cobalt, titanium for part tungsten novel hard alloy 1 by tungsten carbide, titanium carbide, iron nickel composite powder, cobalt
Powder, the weight ratio of chromium carbide are 60~80:3~10：10~20：1：0.35~0.7 hard alloy being made for raw material.
Also referring to Fig. 1 and Fig. 2, wherein Fig. 1 be the present invention provide iron nickel for cobalt, titanium for part tungsten New Rigid
A kind of process chart of embodiment of production technology of alloy；Fig. 2 is that the iron nickel that the present invention is provided is new for part tungsten for cobalt, titanium
The filtering of the production technology of type hard alloy, screening and a kind of process chart of embodiment of drying process.
The production technology S1 of novel hard alloy of the iron nickel for cobalt, titanium for part tungsten is comprised the following steps：
Step S11, raw material mixed grinding：By the tungsten carbide, titanium carbide, iron nickel composite powder, cobalt powder, chromium carbide with weight
Than being 60~80:3~10：10~20：1：0.35~0.7 adds mixing in wet milk, and adds grinding rod to be ground；
Specifically, the wet milk can incline wet milk for 300L；
The grinding rod is baseball, and a diameter of 5.5-10.5cm is highly 14.4-17cm；
The iron nickel powder, the granularity of cobalt powder are that, less than 2um, the granularity of described chromium carbide is the carbonization less than 2.0um
Tungsten is made up of the titanium carbide that particle diameter is 0.8~3.0um tungsten carbides and 0.8~3um, and the weight ratio of the two is 60~80:3~10,
The iron nickel composite powder, cobalt powder are that iron powder, nickel powder, the weight ratio of cobalt powder three are 10 less than 2.0um by particle diameter:3：1, it is described
The weight ratio of the raw material that grinding rod is made into tungsten carbide, titanium carbide, iron nickel composite powder, cobalt powder, chromium carbide is 4~5:1, it is described
Grinding rod is baseball, a diameter of 5.5-10.5cm, is highly 14.4-17cm；
Step S12, addition abrasive media and forming agent：The forming agent be paraffin, specially 58 DEG C fully refined paraffin wax, plus
Heat melt after before wet-milling terminates 24 hours or so or start wet-milling be added to afterwards in the wet milk within 5 hours；
Specifically, the abrasive media is the ethanol of concentration >=95%, ethanol and tungsten carbide, titanium carbide, iron nickel composite powder,
The liquid-solid ratio of the raw material that cobalt powder, chromium carbide are made into is 220~300mL/Kg, and the wet-milling time is 25~60 hours；Paraffin and carbon
The mass ratio for changing the raw material that tungsten, titanium carbide, iron nickel composite powder, cobalt powder, chromium carbide are made into is 1.8~2.5:100；
The baseball format diameter is respectively adopted 10.5cm, 9.5cm, 8.5cm, 7.3cm, 5.5cm, the height of correspondence baseball
Respectively 17cm, 16.7cm, 16.3cm, 15.6cm, 14.4cm, correspondence add ratio be respectively 3%, 33%, 32.5%,
16%th, 15.5%；
Step S13, filter, sieve and dry：Wet-milling slurry after the step 2 is filtered, is sieved, and dried；
Specifically include following steps：
Step S131, the stainless steel mesh sieving wet-milling slurry using 400-500 mesh, are processed, to screening using pre-filtering
Material first carries out filtration treatment；
Step S132, reclaimed using the double Z mixing of 300L, vacuum, ethanol, hot water drying system to sieving in step S131 after
Compound be dried, the drying time be 8~12 hours, hot water drying temperature be 90~95 DEG C；
Step S133, the stainless steel mesh dried compound of sieving using 50-70 mesh, are processed using pre-filtering, right
Screening materials carrying first carries out filtration treatment；
It is step S14, compressing：The material grain that sieve will be wiped by screen cloth is pressed, and obtains semi-finished product；
Specifically, argon gas is passed through during the pellet is compressing, and the forming agent is recycled；
Step S15, sinter molding：Semi-finished product after compacting are put into after being sintered in sintering furnace, are got product after cooling；
Specifically, argon gas is passed through during the sinter molding, and the forming agent is recycled；
Specifically, sintering to 1380~1450 DEG C in conventional vacuum sintering integrated furnace, 50~120 minutes are incubated, cooling
Come out of the stove to room temperature and obtain final product Hardmetal materials.
Iron nickel of the invention has following beneficial effect for cobalt, titanium for the novel hard alloy 1 and its production technology of part tungsten
Really：
Using iron nickel for cobalt, titanium for part tungsten novel hard alloy material, the Hardmetal materials of prior art production,
Primary raw material is tungsten and cobalt, and tungsten and cobalt all resources are in great shortage, and particularly cobalt is especially in great shortage strategic materials, and price occupies height not
Under, and the hard alloy market demand is increasing, tungsten-cobalt resource is fewer and feweri, but iron nickel and titanium ore are hidden and quite enrich, and
And cheap technical problem.
Use the fully refined paraffin wax that fusing point is 58 DEG C as forming agent, mixing for wet-milling is added directly into after heating melting
Close in the wet milk of slurry, rewetting is ground 24 hours or so together with compound, by drying, granulation, compressing, de- shaping
Agent, vacuum-sintering are prepared and draw a kind of low cost, performance hard alloy new material high；And made using argon gas in sintering process
Carrier gas, recycles to paraffin.Reduce environmental pollution, eliminate security hidden trouble, while ensure that hard alloy
Compressing performance and the quality of Hardmetal materials, with extensive and long-range application prospect.Ensure that hard alloy
Compressing performance and the special excellent properties of inexpensive Hardmetal materials, while being used when carbide alloy mixture is sintered
Argon gas makees carrier gas dewaxing, and paraffin is reclaimed, and greatly improves the use quality of product, reduces pollution, reduces peace
Full hidden danger.
Using wax moulding production technology, substitute traditional rubber production technology, it is to avoid rubber needs aviation gasoline molten
Solution, rubber process product needs hydrogen as carrier gas when sintering, and processes rubber waste gas with the method for burning, both contaminated equipment with
Environment, the situation that there is the potential safety hazard of highly dangerous again, while having residual in product after the product for avoiding rubber process is sintered
Ashes is stayed, influences the situation of product use quality to occur；Fusing point is used for 58 DEG C of fully refined paraffin wax, as long as heating and melting can
To be directly added into wet milk, while when paraffin technology product is sintered, making carrier gas using argon gas and dewaxing, paraffin is reclaimed
Treatment, reduces dangerous and pollution, while improve the use quality of product.
Melt paraffin is directly added into the wet milk of the slurry of wet-milling heating, rewetting mill 24 is small together with compound
When or so；Because the liquid of mixed slurry is ethanol, paraffin can be dissolved in hot ethanol, and plus the long-time of more than 24 hours Zuo You
Wet-milling mixing, paraffin in wet milk just can well-proportioned parcel compound grain, such safe operation saves trouble, can prevent well
Only compound oxygenation, it is ensured that the quality of the Hardmetal materials of preparation.
With the use of vacuum, stirring, hot water drying system, the twin-tub for using compared to existing technology, vibration, steam drying,
It is easy to operate, it is time saving and energy saving；Hot water is higher to the safety coefficient of equipment and people than steam；Stir and mixed than the hard alloy of vibration drying
Close material be heated evenly, the quality stability of compound it is good；Twin-tub, vibration, the rubber process of steam drying, lean on completely when drying
Vapour pressure protects raw material, and raw material is to unload out again after making a good job of to mix forming agent, and now the surface of raw material can be very big, holds very much
Oxidizable, oxygen content is uncontrollable in raw material, so as to have a strong impact on alloy product quality；Vacuum drying of the invention is to use vacuum
To protect by dry raw material, due to paraffin be just be added in wet-milling in wet milk and raw material be mixed together, it is dried after
Just there is one layer of parafilm wrap on raw material surface, raw material and air have been completely cut off well, protection raw material will not be oxidized, can effectively control
Oxygen content in raw material processed, it is ensured that the quality of alloy product；
Using double Z mixing, vacuum, ethanol recovery, hot water drying system, ethanol recovery is high；The twin-tub of prior art, shake
Ethanol in dynamic, steam drying raw material, it is simple when drying to be directly accessed stainless steel cask with a rubber tube, add steam and add
Heat, more than 100 DEG C, ethanol is difficult to reclaim alcohol gas temperature, is substantially all and goes to be gone in air；Invention increases one
The ethanol recovery system of cuff chilled water, ethanol recovery reduces ethanol waste up to more than 90%, has saved and has been produced into
This, while reducing environmental pollution；
It is 5.5~10.5cm to use format diameter, is highly the grinding baseball of 14.4cm~17cm, this special grinding
Bar gauge lattice cause that grinding baseball is sufficiently mixed with hard alloy material, obtain good wet-milling effect；
Grinding rod ball format diameter is respectively adopted 10.5cm, 9.5cm, 8.5cm, 7.3cm, 5.5cm, the height of correspondence baseball
Be respectively adopted 17cm, 16.7cm, 16.3cm, 15.6cm, 14.4cm, correspondence add ratio difference 3%, 33%, 32.5%,
16%th, 15.5%, it is this special than arranging combination to ensure grinding rod and the best contact area of hard alloy material, obtain best
Wet-milling effect；
Wet-milling time control reached best wet-milling effect at 36~60 hours with the time for ensureing most short；
Stainless steel mesh selects 400-500 mesh, can effectively prevent the granule debris such as grinding rod chip from entering qualified slurry
Cause product dirtyization；
Granularity from cobalt powder is 1.0~2.0um, because cobalt powder more thin dispersiveness in the alloy is better, and due to former material
Material main component is the WC that granularity is 0.6~1.0um, is fine grained, and cobalt powder is thinner, and both contacts area are also bigger, alloy
Toughness is better, so as to ensure that the toughness of hard alloy, while the cost for making is in contrast than convenient；
Granularity from chromium carbide is 1.0~2.0um, and chromium carbide mainly plays suppression tungsten carbide crystal grain and grows up,
Grain is thinner, and inhibitory action is better, while the cost for making is in contrast than convenient；
Tungsten carbide is 0.6~1.0um by particle diameter and the tungsten carbide of 3~6um is constituted, and the mass ratio of the two is 70~90:10
~30, raw material uses special combination of materials：Granularity is the WC of the WC and 3~6um of 0.6~1.0um, and wherein granularity is 3~6um
WC uniformly dislocation is filled in the WC that granularity is 0.6~1.0um, both can ensure that the sharp cutting resistance of the edge of a knife was small, and effectively
Tear curve during alloy chipping is changed, toughness is enhanced, while avoid edge of a knife when lathe is beated well easily bursting apart
Problem, ensure that in the excellent cutting effect and superpower service life compared with adverse circumstances bottom tool；Greatly improve
Stock-removing efficiency and cutting quality, reduce the serious waste of material, enhance the market competitiveness；Experiments verify that 0.6~
The mass ratio of the WC of the WC and 3~6um of 1.0um is 70~90:The material of obtained hard alloy cutting tool when 10~30
Effect preferably, property indices are good.
Embodiments of the invention are the foregoing is only, the scope of the claims of the invention is not thereby limited, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of iron nickel for cobalt, titanium for part tungsten novel hard alloy, it is characterised in that answered by tungsten carbide, titanium carbide, iron nickel
It is 60~80 to close powder, cobalt powder, the weight ratio of chromium carbide:3~10：10~20：1：0.35~0.7 closes for the hard that raw material are made
Gold.
2. the iron nickel described in a kind of claim 1 for cobalt, titanium for the novel hard alloy of part tungsten production technology, its feature exists
In comprising the following steps：
Step one, raw material mixed grinding：It is with weight ratio by the tungsten carbide, titanium carbide, iron nickel composite powder, cobalt powder, chromium carbide
60~80:3~10：10~20：1：0.35~0.7 adds mixing in wet milk, and adds grinding rod to be ground；
Step 2, addition abrasive media and forming agent：The forming agent is paraffin, and specially 58 DEG C fully refined paraffin wax, heating is melted
After change before wet-milling terminates 24 hours or so or start wet-milling be added to afterwards in the wet milk within 5 hours
Step 3, filter, sieve and dry：Wet-milling slurry after the step 2 is filtered, is sieved, and dried；
It is step 4, compressing：The material grain that sieve will be wiped by screen cloth is pressed, and obtains semi-finished product；
Step 5, sinter molding：Semi-finished product after compacting are put into after being sintered in sintering furnace, are got product after cooling.
3. the production technology of novel hard alloy of the iron nickel according to claim 2 for cobalt, titanium for part tungsten, its feature exists
In in the step one, the wet milk can incline wet milk for 300L.
4. the production technology of novel hard alloy of the iron nickel according to claim 2 for cobalt, titanium for part tungsten, its feature exists
In in the step one, the grinding rod is baseball, and a diameter of 5.5-10.5cm is highly 14.4-17cm.
5. the production technology of novel hard alloy of the iron nickel according to claim 2 for cobalt, titanium for part tungsten, its feature exists
In, iron nickel powder described in the step one, the granularity of cobalt powder be less than 2um, the granularity of described chromium carbide be less than 2.0um,
The tungsten carbide is made up of the titanium carbide that particle diameter is 0.8~3.0um tungsten carbides and 0.8~3um, and the weight ratio of the two is 60~
80:3~10, the iron nickel composite powder, cobalt powder are that iron powder, nickel powder, the weight ratio of cobalt powder three are 10 less than 2.0um by particle diameter:
3：1, the weight ratio of the raw material that the grinding rod and tungsten carbide, titanium carbide, iron nickel composite powder, cobalt powder, chromium carbide are made into for 4~
5:1, the grinding rod is baseball, and a diameter of 5.5-10.5cm is highly 14.4-17cm.
6. the production technology of novel hard alloy of the iron nickel according to claim 2 for cobalt, titanium for part tungsten, its feature exists
In in the step 2, the abrasive media is the ethanol of concentration >=95%, and ethanol is combined with tungsten carbide, titanium carbide, iron nickel
The liquid-solid ratio of the raw material that powder, cobalt powder, chromium carbide are made into is 220~300mL/Kg, and the wet-milling time is 25~60 hours；Paraffin with
The mass ratio of the raw material that tungsten carbide, titanium carbide, iron nickel composite powder, cobalt powder, chromium carbide are made into is 1.8~2.5:100.
7. the production technology of novel hard alloy of the iron nickel according to claim 2 for cobalt, titanium for part tungsten, its feature exists
In in the step 2, the baseball format diameter is respectively adopted 10.5cm, 9.5cm, 8.5cm, 7.3cm, 5.5cm, correspondence rod
The height of ball is respectively 17cm, 16.7cm, 16.3cm, 15.6cm, 14.4cm, correspondence add ratio be respectively 3%, 33%,
32.5%th, 16%, 15.5%..
8. the production technology of novel hard alloy of the iron nickel according to claim 2 for cobalt, titanium for part tungsten, its feature exists
In in the step 3, simultaneously drying process specifically includes following steps for filtering, screening：
Step 3 one, the stainless steel mesh sieving wet-milling slurry using 400-500 mesh, are processed, to screening materials carrying using pre-filtering
First carry out filtration treatment；
Step 3 two, reclaimed using the double Z mixing of 300L, vacuum, ethanol, hot water drying system to being sieved in step 3 one after mix
Close material to be dried, the drying time is 8~12 hours, hot water drying temperature is 90~95 DEG C；
Step 3 three, the stainless steel mesh dried compound of sieving using 50-70 mesh, are processed, to screening using pre-filtering
Material first carries out filtration treatment.
9. the production technology of novel hard alloy of the iron nickel according to claim 8 for cobalt, titanium for part tungsten, its feature exists
In sinter molding in the step 5 in conventional vacuum sintering integrated furnace specifically, sinter to 1380~1450 DEG C, insulation 50
~120 minutes, it is cooled to room temperature and comes out of the stove and obtain final product Hardmetal materials.
10. the production technology of novel hard alloy of the iron nickel according to claim 2 for cobalt, titanium for part tungsten, its feature
It is that pellet described in the step 4 and the step 5 is compressing, is passed through argon gas during sinter molding, and to described
Forming agent is recycled.
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| CN107746983A (en) * | 2017-09-11 | 2018-03-02 | 自贡硬质合金有限责任公司 | A kind of crystal grain height is uniformly distributed the preparation method of hard alloy |
| CN108130468A (en) * | 2017-12-04 | 2018-06-08 | 株洲夏普高新材料有限公司 | Heat-and corrosion-resistant hard alloy and preparation method thereof |
| CN109295374A (en) * | 2018-12-12 | 2019-02-01 | 株洲金韦硬质合金有限公司 | A kind of nickel is for cobalt hard alloy material and its preparation method and application |
| CN109881071A (en) * | 2019-02-22 | 2019-06-14 | 横店集团东磁股份有限公司 | A kind of low cost mould cemented carbide material and preparation method thereof |
| CN110899799A (en) * | 2019-12-10 | 2020-03-24 | 福建中成新材料科技有限公司 | Tungsten steel milling cutter for horizontal machining center and preparation method thereof |
| CN114657434A (en) * | 2022-03-25 | 2022-06-24 | 成都西顿硬质合金有限公司 | Hard alloy material and preparation method thereof |
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| CN114657434A (en) * | 2022-03-25 | 2022-06-24 | 成都西顿硬质合金有限公司 | Hard alloy material and preparation method thereof |
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