CN109811236A - A kind of preparation method of high-performance carbide material - Google Patents
A kind of preparation method of high-performance carbide material Download PDFInfo
- Publication number
- CN109811236A CN109811236A CN201910220685.3A CN201910220685A CN109811236A CN 109811236 A CN109811236 A CN 109811236A CN 201910220685 A CN201910220685 A CN 201910220685A CN 109811236 A CN109811236 A CN 109811236A
- Authority
- CN
- China
- Prior art keywords
- preparation
- batch
- sintering
- temperature
- low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Powder Metallurgy (AREA)
Abstract
The invention discloses a kind of preparation methods of high-performance carbide material, belong to hard alloy preparation method field.The preparation method of high-performance carbide material of the invention includes the following steps, one, mixing；Two, dry；Three, step 1 is repeated to two, obtains more batch of material grains；Four, it closes and criticizes: conjunction batch processing is carried out to more batch of material grains, expect grain after obtaining conjunction batch；Five, it suppresses: material grain after criticizing will be closed and be pressed into die mould material；Six, it is sintered: die mould material being sent into sintering furnace and is sintered；Seven, sub-cooled: the sintering feed obtained after sintering is cooled to -150 DEG C or less progress low-temperature treatments, the soaking time of low-temperature treatment is 2~5h；Eight, be tempered: sub-cooled treated material carries out tempering.By closing batch step, the size distribution of every batch of mixing is homogenized, the dimensional accuracy error for reducing cutter after compacting sintering forms further increases the hardness and toughness of high-performance carbide material using low-temperature treatment.
Description
Technical field
The present invention relates to hard alloy preparation method fields, more particularly to a kind of high-performance carbide material
Preparation method.
Background technique
With the fast development of industrial technology, sintered-carbide tool material is quickly deep into industrial every aspect,
Gradually instead of original high speed steel material, and show unrivaled excellent properties.In order to cater to paper conversion industry cutter,
Traditional cutting tool material switchs to cemented carbide material by high speed steel material.
Hard alloy main component is tungsten carbide (WC), generally does bonding phase using cobalt, is produced using powder metallurgy process,
With very high wearability and intensity.Its high-wearing feature makes its service life improve 10~30 times, greatly improves life
Benefit is produced, reduces waste, reduces production cost, obtained the approval of industry.But have some critical defects, use particle
Thin raw material is done, although wearability is good, poor toughness；It is made of thick raw material, although intensity, toughness can be with the edge of a knife is blunt, cuts
Resistance is big, is also easy to produce high temperature, influences cutting quality and cutter life.
Through retrieving, China Patent Publication No.: CN108914018A；Publication date: on November 30th, 2018；Disclose a kind of knife
Tool use cemented carbide material, the cutter cemented carbide material component proportion (mass fraction) include 70-80 parts of ferro element,
1-1.5 parts of carbon, 10-15 parts of nickel element, 2.5-8 parts of magnesium elements, 2-5 parts of aluminium element, 3-6 parts of chromium, molybdenum element 1-1.5
Part, 2-3.5 parts of titanium elements, 1-2 parts of barium element, 1-1.5 parts of vanadium, 10-15 parts of tungsten carbide, 0.07-0.09 parts of rhenium element.It should
Invent hard alloy cutter final finished cutter obtained in actual use, wearability is poor, and cutting quality is not up to standard, performance
Not as good as the hard alloy made using WC as matrix.
In addition, China Patent Publication No.: CN103388097B；Publication date: on May 25th, 2016；Disclose a kind of hard conjunction
Golden cutter, is composed of the following raw materials by weight: 65-80 parts of hard phases, 10-14 parts of bonding phases, 6-9 parts of inhibition phases, 2-4 parts of hardenings
Phase, the hard phase are made of the raw material of following mass percent: 16-18% tungsten carbide, 3-5% tantalum carbide, 0.9-1.2%
Niobium carbide, 2.5-3.0%TiC, 0.6-0.9% neodymium, surplus are silicon carbide；The Binder Phase is by following mass percent
Raw material composition: 4-8%NiAl, 24-32%Co, surplus are hydroxy iron powder；The inhibition is mutually by the original of following mass percent
Material composition: 3-6%NbC, 12-23%TaC, 10-15% graphene, surplus VC；The hardening is mutually by following quality hundred
Divide the raw material composition of ratio: 60-70%Cr3C2, 14-18% anatase titania, surplus be zirconium dioxide.Using the formula system
The more existing cutter of hard alloy cutter performance obtained makes moderate progress, but the hard alloy formula components cost is very high, middle niobium carbide,
Tantalum carbide is all the very expensive rare precious metal of price, is not suitable for being generalized to general enterprises.
Hard alloy preparation process generally comprises ingredient, wet-milling, drying, mixes forming agent, granulation, compression moulding, sintering etc.
Step finds in the actual production process, prepares molding cutter it sometimes appear that the larger situation of dimensional accuracy error, and pass
The hard alloy cutter limited capacity of controlling Preparation Method preparation, is difficult to meet social development and want to hard alloy cutter higher performance
The demand asked.
Through retrieving, China Patent Publication No.: publication date: CN103243253B is disclosed a kind of hard on January 20th, 2016
Matter alloy and preparation method thereof, the preparation method of hard alloy include the following steps: to take each component by weight percentage, mix
Even, was moulding is mixed in vacuum drying, and homogenization is broken, is sieved, and compacting, low pressure sintering obtains hard alloy；Wherein, the side of mixing
Formula is wet-milling；The specific mo(u)lding pressure of compacting is 0.5-1.0MPa；The low pressure sintering, which includes the following steps: to suppress, to be obtained
Semi-finished product be put into low-pressure sintering furnace, sintering pressure is set as 4.5~5.5MPa, first will be in semi-finished product at 400~500 DEG C
Wax purify, after by sintering temperature control be 1360~1400 DEG C, it is heat-insulation pressure keeping 1 hour, cooling, when cooling pressure be 3.5~
4.5MPa comes out of the stove to obtain hard alloy, using the production big there are still dimensional accuracy error of hart metal product made from this method
Product, and its wearability is poor.
Summary of the invention
1. technical problems to be solved by the inivention
It is big easily to occur dimensional accuracy error during the preparation process for cemented carbide material in the prior art, hardness, toughness
Problem not up to standard, the present invention provides a kind of preparation methods of high-performance carbide material.Increase in method of the invention
Batch step is closed, the size distribution of every batch of mixing is homogenized, reduces the dimensional accuracy mistake of cutter after compacting sintering molding
Difference further increases the hardness and toughness of cemented carbide material using low-temperature treatment.
2. technical solution
In order to achieve the above objectives, technical solution provided by the invention are as follows:
A kind of preparation method of high-performance carbide material, includes the following steps,
One, mixing:
A, each material composition of hard alloy is configured；
B, wet milk is added in alloying pellet, configured material and alcohol；
C, wet milk is added in forming agent；
D, start wet milk, obtain slurry；
Two, dry:
A, slurry is dried, obtains dried feed；
B, sieve dried feed is wiped using sieve, obtains material grain；
Three, step 1 is repeated to two, obtains more batch of material grains；
Four, it closes and criticizes: conjunction batch processing is carried out to more batch of material grains, expect grain after obtaining conjunction batch；
Five, it suppresses: material grain after criticizing will be closed and be pressed into die mould material；
Six, it is sintered: die mould material being sent into sintering furnace and is sintered；
Seven, the sintering feed obtained after sintering sub-cooled: is cooled to -150 DEG C or less progress low-temperature treatments, low-temperature treatment
Soaking time be 2~5h；
Eight, be tempered: sub-cooled treated material carries out tempering.
The preparation process of hard alloy is an important factor for influencing its performance, and technological operation is improper, may result in hard
Occur various harmful phases in alloy, the final performance for influencing hard alloy, existing hard alloy treatment process is usually by as follows
Step is constituted, and mixing, wet-milling, primary dcreening operation, drying, secondary sieving, compacting, sintering and cooling, this programme carry out traditional handicraft
It improves, and technological parameter is optimized, played the characteristic of formula element, reduce the probability of harmful phase generation, finally
Product obtained has high rigidity, high tenacity and uniform properties, and service life is more long.
Traditional handicraft is that compacting and subsequent step are carried out after directly mixing more batch of material grains, in molding cemented carbide material
School inspection Shi Faxian is carried out, molding cutter after the material grain mixing of different batches, dimensional accuracy is low, single a batch of material grain mixing
Molding tool dimension precision is normal afterwards, finds after applicant's research, and the particle size differences for more batch of material intergranulars that wet-milling obtains are big, letter
Carry out subsequent step after single mixing, green density is uneven when size distribution unevenly leads to compacting, and when sintering can deform, can shadow
It rings and arrives final cemented carbide material precision after molding, and be simply mixed and carbon in cemented carbide material ingredient is easily caused to be unevenly distributed
The phenomenon that scarce carbon in even, part, when sintering, which generates, to be lacked carbon phase and influences whether alloy property, but when actual production, it is difficult to the meeting avoided
Practical mixture grain carries out subsequent handling, therefore the step of the application has added conjunction batch processing such as suppressing, and carries out to more batch of material grains
It mixes, grinding, the uniformity of Lai Gaishan mixture grain size distribution overcomes asking for the molding tool precision difference of mixture grain
Topic.
Closing after the material grain after criticizing is pressed into die mould material can be sintered, the determination of suitable sintering temperature and hard alloy
The phosphorus content of material is related, and phosphorus content is at 0.05~0.08, within the scope of 1400~1500 DEG C, with the liter of sintering temperature
The porosity of height, hard alloy reduces, and consistency increases, and bending strength improves, but the raising of sintering temperature will lead to hard
The evaporation loss of alloy surface Co increases, and the porosity on surface layer will increase, so sintering temperature is unsuitable excessively high, when temperature is 1475
DEG C when be sintered, it is big to the promotion of bending resistance strength character and carbide surface porosity is unaffected at a temperature of this；
Sintering time is controlled in 60~90min, and as sintering time increases, the bending strength of hard alloy is gradually increased, and is more than certain
After temperature, bending strength starts to reduce, and the evaporation loss of carbide surface Co becomes serious, and optimal sintering time is
75min。
In conventional production technology, sintered sintering feed cools to room temperature, the hard that this treatment process obtains with the furnace
Hardness, the toughness of alloy are limited, it is difficult to meet the needs of existing environment increasingly increases Cemented Carbide Properties, this programme is to sintering
Rear sintering feed carries out low-temperature treatment, and sintered sintering feed first cools to room temperature with the furnace, be subsequently placed in deep cooling box to its into
Row cooling, be cooled to -150 DEG C hereinafter, heat preservation 2~5 hours, the hard alloy after low-temperature treatment, at 200 DEG C or more,
Its hardness is higher than untreated hard alloy, and the wearability of hard alloy is higher than untreated wearability after low-temperature treatment,
Bending strength is also above untreated hard alloy.
Material after low-temperature treatment carries out tempering, eliminates the internal stress generated in low-temperature process, further protects
Demonstrate,prove the performance of final products.
Further, the conjunction batch processing is by the way of dry type mixing.More specifically, this programme is mixed using double helix
Machine carries out dry-mixing to more batches of mixtures, can be effectively improved the distribution of different batches mix size using double worm mixer
Uniformity, reduce different batches in each granularity mass fraction it is very poor, to guarantee the precision controlling of final molding product size.
Further, dry-mixing process continues half an hour.Each half an hour dry-mixing duration can guarantee that mixing is equal
It is even, it is little to mixed effect promotion to be greater than half an hour, but will increase the time cost of production.
Further, the temperature of the sub-cooled processing is -160 DEG C~-186 DEG C.As treatment temperature reduces, hard
The thermohardening (hardness of hard alloy under high temperature) of alloy finished product increases, and temperature continues after being reduced to certain value, thermohardening
No longer improve, the bending strength of hard alloy also with treatment temperature reduction and increase, after temperature drops to -160 DEG C, bending resistance
The increase rate of intensity is maximum, continues to reduce with temperature later, and the increase rate of bending strength largely reduces, from it is comprehensive at
This consideration controls temperature at -160 DEG C~-186 DEG C, the strengthening effect of available optimal red hardness and bending strength.
Further, tempering step is carried out again after the sub-cooled step cycle 2~3 times.The study found that only to sintering
Material afterwards carries out a low-temperature treatment, and the performance of final hard alloy improves unevenly, and especially processing volume of material is larger
When, using low-temperature treatment is recycled, the material after first time low-temperature treatment continues this programme after being returned to room temperature at room temperature
1~2 low-temperature treatment, bulky material number of processes is more, the material after recycling low-temperature treatment, and the raising of performance is more equal
It is even, and on inspection, in subsequent low-temperature process, α-Co can be generated in Binder Phase, this tissue is not easy bonding abrasion, profit
Slip is good, Binder Phase can be improved to the adhesion strength of hard phase, and then the wear-resisting property of hard alloy entirety can be improved.
Further, the soaking time of first time sub-cooled is 4~5 hours, and second of sub-cooled or third time are low
The cooling soaking time of temperature is 2 hours.The treatment temperature of each low-temperature processing steps is all the same, the Vickers hardness of hard alloy
It can change with soaking time with compression strength；In first time low-temperature treatment, keeps the temperature 4~5 hours at low temperature and reach
To maximum Vickers hardness and compression strength, 5 hours are kept the temperature when keeping the temperature 4 hours, -160 DEG C at -186 DEG C, temperature reduction, most
Good soaking time shortens, second shorter than for the first time with the soaking time of subsequent low-temperature treatment process, controls at two hours, protects
Prevent Cemented Carbide Properties from declining while demonstrate,proving subsequent low-temperature treatment effect.
Further, in mixing step, alloying pellet: material: the mass ratio of alcohol is 4:2:1.Alloying pellet and material in ball mill
Mass ratio be 4:2, the mass ratio of alcohol and material is 1:2, and alcohol does not cross charge level 1cm, can guarantee ball mill under this collocation
Optimal ground and mixed effect, makes mixing more evenly.
Further, used in mixing step purity for 99.5% alcohol.Applicants have found that using different purity
Alcohol wet-milling after mixture oxygen content it is different, and then influence whether the carbon and oxygen balance in sintering process, alcohol purity is lower than
98%, the oxygen content fluctuation of the mixture after wet-milling is very big, and carbon and oxygen balance is difficult to control, and easily has in hard alloy after sintering
Harmful third phase influences whether the performance of final products, uses absolute alcohol (purity 99.5%), can subtract to the greatest extent
Oxygen content caused by when few wet-milling fluctuates, and the carbon and oxygen balance in sintering process is easier to control, it is easier to obtain excellent performance
Hart metal product, this programme use purity for 99.5% alcohol, and when guaranteeing every batch of wet-milling, the alcohol purity phase that uses
Deng.
Further, in drying steps, using vacuum drying mode.Under negative pressure state, liquid becomes gaseous volatilization
Fall required temperature than much lower under normal pressure, this programme uses vacuum drying method, by vacuum degree control 800~
Between 650Kpa, shortens the slurry dry time needed, saved time cost.
Further, the material composition configured in mixing step is expressed as follows by weight ratio, WC:70~75 part；Co:7
~9 parts；TiC:12~14 part；Ni:4~6 part；TaC:0.3~0.5 part.
When the preparation method of the application processes the cemented carbide material of this ingredient, the performance of product is best.
Further, in the material configured in mixing step, there are following relationships between each component weight:
0.3≤Ni/(Co+Ni)≤0.4；
0.05≤(0.06WC+0.2TiC)/(WC+Co+TiC+Ni)≤0.08。
Ni and Co is added in hard alloy as bonding, and Ni is added merely, will lead to the cemented carbide material of preparation
Toughness is inadequate, and Co is added merely, will lead to production cost and greatly improves, therefore the application is using the side of Ni and Co cooperation addition
Case finds that Ni is different from the relative amount of Co in research, affects the variation of hard phase in sintering process, WC is in Ni and Co
Solid solubility it is different, therefore in sintering, Ni is different from the solution rate that the difference of the relative amount of Co will lead to solid phase particles,
For the WC content of the application, if controlling the relative amount of bad Ni and Co, causes solid phase particles solution rate too fast, will lead to
Hard phase crystal grain is grown up unevenly, is weakened the inhibiting effect that other components grow up to crystal grain, is caused the performance of cemented carbide material
Be affected, as the relative amount of Ni is constantly reduced, hard phase crystal grain is more tiny, be distributed it is more uniform, cemented carbide material it is hard
Degree is continuously increased, and after hardness increases to certain value, then reduces the relative amount of Ni, firmness change very little, and opposite with Ni contains
The reduction of amount, the bending strength first increases and then decreases of cemented carbide material, this programme control the relative amount Ni/ (Co+Ni) of Ni
Between 0.3~0.4, in this range intervals, the bending strength of cemented carbide material reaches maximum, and its hardness also reaches most
It tends towards stability after big.
Carbon in hard alloy is mainly provided by WC and TiC, and the content of WC and TiC influence whether the carbon containing of hard alloy
Amount, phosphorus content is too low or decarburization phase or free carbon occurs in excessively high will lead in hard alloy, and the appearance of the two influences whether firmly
The performance of matter alloy, this programme control (0.06WC+0.2TiC)/(WC+Co+TiC+Ni) value between 0.05~0.08, herein
In range intervals, when sintering, is not likely to produce decarburization phase or free carbon, is lower than this range, is also easy to produce decarburization phase, is higher than this range, easily
In generation free carbon, and as (0.06WC+0.2TiC)/(WC+Co+TiC+Ni) value constantly increases, cemented carbide material resists
Curved intensity constantly increases.
3. beneficial effect
Using technical solution provided by the invention, compared with prior art, have the following beneficial effects:
(1) preparation method of a kind of high-performance carbide material of the invention, changes processing step and parameter
Into and optimization, played the characteristic of formula element, reduced the probability of harmful phase generation, final obtained product has high hard
Degree, high tenacity and uniform properties, service life are more long；
(2) preparation method of a kind of high-performance carbide material of the invention is avoided using batch technique is closed when preparation
Under conventional preparation techniques, the low situation of molding tool dimension precision occurs after the material grain mixing of different batches, by closing batch work
Skill mixes more batch of material grains, is ground, improves the uniformity of mixture grain size distribution, and the molding of mixture grain is overcome
Material low precision the problem of；
(3) preparation method of a kind of high-performance carbide material of the invention, in high-performance carbide material
Phosphorus content, by sintering temperature control between 1400~1500 DEG C, the time control in 60~90min, in this interval range
Interior, the bending strength of high-performance carbide material further gets a promotion, and in this interval range Co evaporating loss it is small；
(4) preparation method of a kind of high-performance carbide material of the invention uses Low temperature processing techniques, makes after sintering
Thermohardening, wearability and the bending strength of high-performance carbide material are higher than the material without low-temperature treatment；
(5) preparation method of a kind of high-performance carbide material of the invention, when mixing, alloying pellet: material: the matter of alcohol
Amount is than being 4:2:1, it is ensured that the best grinding effect of ball mill makes mixing more evenly；
(6) preparation method of a kind of high-performance carbide material of the invention, the additional amount of alcohol in each mixing
Unanimously, and every time use purity for 99.5% alcohol, it is possible to reduce the oxygen content of mixture fluctuates, and makes carbon oxygen when sintering
Balance is easier to control, and the probability of harmful third phase is occurred after reducing sintering, is obtained the performance of high-performance carbide material
It is further ensured that；
(7) preparation method of a kind of high-performance carbide material of the invention closes batch processing and uses dry-mixed mode,
It can be effectively improved the uniformity of different batches mix size distribution, reduce the pole of each granularity mass fraction in different batches
Difference, to guarantee the precision controlling of final molding product size；
(8) preparation method of a kind of high-performance carbide material of the invention, dry-mixing time controlled in half an hour, can
To guarantee to be uniformly mixed, it is little to mixed effect promotion to be greater than half an hour, but will increase the time cost of production；
(9) temperature of the preparation method of a kind of high-performance carbide material of the invention, low-temperature treatment is controlled -160
DEG C~-186 DEG C, the strengthening effect of available optimal red hardness and bending strength；
(10) preparation method of a kind of high-performance carbide material of the invention, low-temperature processing steps recycle 2~3 times,
Guarantee low-temperature treatment to the uniformity of each position performance boost of high-performance carbide material, and in subsequent low-temperature treatment, meeting
Promote to generate α-Co tissue in Binder Phase, improves Binder Phase to the adhesion strength of hard phase, it is whole to high-performance carbide material
The wearability of body is further promoted；
(11) preparation method of a kind of high-performance carbide material of the invention is reduced using vacuum drying mode
The dry used time, further shorten time cost consumed by high-performance carbide material.
Detailed description of the invention
Fig. 1 is high-performance carbide material preparation method flow chart of the invention；
Specific embodiment
To further appreciate that the contents of the present invention, in conjunction with attached drawing, the present invention is described in detail.
Embodiment 1
The high-performance carbide material of the present embodiment, is made of the raw material of following weight proportion: WC:73.4 parts；Co:
8.2 part；TiC:13 parts；Ni:5 parts；TaC:0.4 parts.
High-performance carbide material is prepared into through following technique:
One, mixing:
A, each material composition of hard alloy is configured；
B, wet milk is added in the alcohol that alloying pellet, configured material and purity are 99.5%, alloying pellet: material: alcohol=
4:2:1；
C, wet milk is added in wax moulding agent, paraffin additive amount is 2%；
D, start wet milk, the wet-milling time is 37 hours, obtains slurry；
Two, dry:
A, slurry is dried in vacuo, vacuum degree 650KPa obtains dried feed；
B, sieve dried feed is wiped using the sieve of 60 mesh, obtains material grain；
Three, step 1 is repeated to two, obtains more batch of material grains；
Four, it closes and criticizes: dry-mixing being carried out to more batch of material grains with double worm mixer and closes batch processing, the dry-mixing duration is half
Hour, grain is expected after obtaining conjunction batch；
Five, it suppresses: material grain after criticizing will be closed and be pressed into die mould material；
Six, it is sintered: die mould material being sent into sintering furnace and is sintered, sintering temperature is 1400 DEG C, sintering time 60min；
Seven, sub-cooled: being cooled to -160 DEG C of progress first time low-temperature treatments for the sintering feed obtained after sintering, for the first time
The soaking time of low-temperature treatment is 4h, is then returned to room temperature at room temperature, carries out second of low-temperature treatment, at second of low temperature
The soaking time of reason is 2 hours, is then returned to room temperature at room temperature, carries out third time low-temperature treatment, third time low-temperature treatment
Soaking time be 2 hours；
Eight, be tempered: sub-cooled treated material tempering at 120 DEG C is in the soaking time of tempering
2h。
Preparation method process is as shown in Figure 1.
Finally obtained product sample is tested after to tempering, as a result as follows:
Density: D=14.20；Cobalt magnetic: com=17.7；Hardness: HRA=91.5；Magnetic force: He=15；Intensity: TRS=
3000。
Embodiment 2
The high-performance carbide material of the present embodiment, is made of the raw material of following weight proportion: WC:73.4 parts；Co:
8.2 part；TiC:13 parts；Ni:5 parts；TaC:0.4 parts.
High-performance carbide material is prepared into through following technique:
One, mixing:
A, each material composition of hard alloy is configured；
B, wet milk is added in the alcohol that alloying pellet, configured material and purity are 99.5%, alloying pellet: material: alcohol=
4:2:1；
C, wet milk is added in wax moulding agent, paraffin additive amount is 2%；
D, start wet milk, the wet-milling time is 40 hours, obtains slurry；
Two, dry:
A, slurry is dried in vacuo, vacuum degree 800KPa obtains dried feed；
B, sieve dried feed is wiped using the sieve of 70 mesh, obtains material grain；
Three, step 1 is repeated to two, obtains more batch of material grains；
Four, it closes and criticizes: dry-mixing being carried out to more batch of material grains with double worm mixer and closes batch processing, the dry-mixing duration is half
Hour, grain is expected after obtaining conjunction batch；
Five, it suppresses: material grain after criticizing will be closed and be pressed into die mould material；
Six, it is sintered: die mould material being sent into sintering furnace and is sintered, sintering temperature is 1500 DEG C, sintering time 90min；
Seven, sub-cooled: being cooled to -186 DEG C of progress first time low-temperature treatments for the sintering feed obtained after sintering, for the first time
The soaking time of low-temperature treatment is 5h, is then returned to room temperature at room temperature, carries out second of low-temperature treatment, at second of low temperature
The soaking time of reason is 2 hours, is then returned to room temperature at room temperature, carries out third time low-temperature treatment, third time low-temperature treatment
Soaking time be 2 hours；
Eight, be tempered: sub-cooled treated material tempering at 180 DEG C is in the soaking time of tempering
3h。
Finally obtained product sample is tested after to tempering, as a result as follows:
Density: D=14.40；Cobalt magnetic: com=18.3；Hardness: HRA=93.0；Magnetic force: He=14；Intensity: TRS=
3600。
Embodiment 3
The high-performance carbide material of the present embodiment, is made of the raw material of following weight proportion: WC:73.4 parts；Co:
8.2 part；TiC:13 parts；Ni:5 parts；TaC:0.4 parts.
High-performance carbide material is prepared into through following technique:
One, mixing:
A, each material composition of hard alloy is configured；
B, wet milk is added in the alcohol that alloying pellet, configured material and purity are 98%, alloying pellet: material: alcohol=4:
2:1；
C, wet milk is added in wax moulding agent, paraffin additive amount is 2%；
D, start wet milk, the wet-milling time is 37 hours, obtains slurry；
Two, dry:
A, slurry is dried in vacuo, vacuum degree 800KPa obtains dried feed；
B, sieve dried feed is wiped using the sieve of 50 mesh, obtains material grain；
Three, step 1 is repeated to two, obtains more batch of material grains；
Four, it closes and criticizes: dry-mixing being carried out to more batch of material grains with double worm mixer and closes batch processing, the dry-mixing duration is half
Hour, grain is expected after obtaining conjunction batch；
Five, it suppresses: material grain after criticizing will be closed and be pressed into die mould material；
Six, it is sintered: die mould material being sent into sintering furnace and is sintered, sintering temperature is 1475 DEG C, sintering time 75min；
Seven, sub-cooled: being cooled to -180 DEG C of progress first time low-temperature treatments for the sintering feed obtained after sintering, for the first time
The soaking time of low-temperature treatment is 4.5h, is then returned to room temperature at room temperature, carries out second of low-temperature treatment, second of low temperature
The soaking time of processing is 2 hours, is then returned to room temperature at room temperature, carries out third time low-temperature treatment, at third time low temperature
The soaking time of reason is 2 hours；
Eight, be tempered: sub-cooled treated material tempering at 160 DEG C is in the soaking time of tempering
3h。
Finally obtained product sample is tested after to tempering, as a result as follows:
Density: D=14.35；Cobalt magnetic: com=17.9；Hardness: HRA=93.0；Magnetic force: He=15；Intensity: TRS=
3800。
Embodiment 4
The high-performance carbide material of the present embodiment, is made of the raw material of following weight proportion: WC:73.4 parts；Co:
8.2 part；TiC:13 parts；Ni:5 parts；TaC:0.4 parts.
High-performance carbide material is prepared into through following technique:
One, mixing:
A, each material composition of hard alloy is configured；
B, wet milk is added in the alcohol that alloying pellet, configured material and purity are 99.5%, alloying pellet: material: alcohol=
4:2:1；
C, wet milk is added in wax moulding agent, paraffin additive amount is 2%；
D, start wet milk, the wet-milling time is 40 hours, obtains slurry；
Two, dry:
A, slurry is dried in vacuo, vacuum degree 800KPa obtains dried feed；
B, sieve dried feed is wiped using the sieve of 50 mesh, obtains material grain；
Three, step 1 is repeated to two, obtains more batch of material grains；
Four, it closes and criticizes: dry-mixing being carried out to more batch of material grains with double worm mixer and closes batch processing, the dry-mixing duration is half
Hour, grain is expected after obtaining conjunction batch；
Five, it suppresses: material grain after criticizing will be closed and be pressed into die mould material；
Six, it is sintered: die mould material being sent into sintering furnace and is sintered, sintering temperature is 1475 DEG C, sintering time 75min；
Seven, sub-cooled: being cooled to -180 DEG C of progress first time low-temperature treatments for the sintering feed obtained after sintering, for the first time
The soaking time of low-temperature treatment is 4.5h, is then returned to room temperature at room temperature, carries out second of low-temperature treatment, second of low temperature
The soaking time of processing is 2 hours, is then returned to room temperature at room temperature, carries out third time low-temperature treatment, at third time low temperature
The soaking time of reason is 2 hours；
Eight, be tempered: sub-cooled treated material tempering at 160 DEG C is in the soaking time of tempering
3h。
Finally obtained product sample is tested after to tempering, as a result as follows:
Density: D=14.35；Cobalt magnetic: com=17.9；Hardness: HRA=93.5；Magnetic force: He=15；Intensity: TRS=
3800。
As the preparation process of high-performance carbide material and parameter as described in Example 4, obtained final high-performance
The comprehensive performance of cemented carbide material sample is best, for most preferably scheme.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field
Art personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution
Similar frame mode and embodiment, are within the scope of protection of the invention.
Claims (9)
1. a kind of preparation method of high-performance carbide material, which is characterized in that include the following steps,
One, mixing:
A, each material composition of hard alloy is configured；
B, wet milk is added in alloying pellet, configured material and alcohol；
C, wet milk is added in forming agent；
D, start wet milk, obtain slurry；
Two, dry:
A, slurry is dried, obtains dried feed；
B, sieve dried feed is wiped using sieve, obtains material grain；
Three, step 1 is repeated to two, obtains more batch of material grains；
Four, it closes and criticizes: conjunction batch processing is carried out to more batch of material grains, expect grain after obtaining conjunction batch；
Five, it suppresses: material grain after criticizing will be closed and be pressed into die mould material；
Six, it is sintered: die mould material being sent into sintering furnace and is sintered；
Seven, the sintering feed obtained after sintering sub-cooled: is cooled to -150 DEG C or less progress low-temperature treatments, the guarantor of low-temperature treatment
The warm time is 2~5h；
Eight, be tempered: sub-cooled treated material carries out tempering.
2. a kind of preparation method of high-performance carbide material according to claim 1, it is characterised in that: described close is criticized
Processing is by the way of dry type mixing.
3. a kind of preparation method of high-performance carbide material according to claim 2, it is characterised in that: dry-mixing mistake
Cheng Chixu half an hour.
4. a kind of preparation method of high-performance carbide material according to claim 1, it is characterised in that: the low temperature
The temperature of cooling treatment is -160 DEG C~-186 DEG C.
5. a kind of preparation method of high-performance carbide material according to claim 4, it is characterised in that: the low temperature
Cooling step carries out tempering step after recycling 2~3 times again.
6. a kind of preparation method of high-performance carbide material according to claim 5, it is characterised in that: low for the first time
The cooling soaking time of temperature is 4~5 hours, and the soaking time of second of sub-cooled or third time sub-cooled is 2 hours.
7. a kind of preparation method of high-performance carbide material according to claim 1, it is characterised in that: mixing step
In, alloying pellet: material: the mass ratio of alcohol is 4:2:1.
8. a kind of preparation method of high-performance carbide material according to claim 7, it is characterised in that: mixing step
It is middle use purity for 99.5% alcohol.
9. a kind of preparation method of high-performance carbide material according to claim 1, it is characterised in that: drying steps
In, using vacuum drying mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910220685.3A CN109811236B (en) | 2019-03-22 | 2019-03-22 | Preparation method of high-performance hard alloy material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910220685.3A CN109811236B (en) | 2019-03-22 | 2019-03-22 | Preparation method of high-performance hard alloy material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109811236A true CN109811236A (en) | 2019-05-28 |
| CN109811236B CN109811236B (en) | 2020-11-10 |
Family
ID=66609975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910220685.3A Active CN109811236B (en) | 2019-03-22 | 2019-03-22 | Preparation method of high-performance hard alloy material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109811236B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273094A (en) * | 2019-08-05 | 2019-09-24 | 赣州锐科合金材料有限公司 | A kind of preparation method of cemented carbide powder |
| CN114769475A (en) * | 2022-03-16 | 2022-07-22 | 江阴市腾马标准件工具有限公司 | High-strength thread rolling wheel based on hard alloy and preparation process thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105950935A (en) * | 2016-05-05 | 2016-09-21 | 苏州新锐合金工具股份有限公司 | Hard alloy mold material for fastener formed through cold upsetting and preparation method of hard alloy mold material |
-
2019
- 2019-03-22 CN CN201910220685.3A patent/CN109811236B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105950935A (en) * | 2016-05-05 | 2016-09-21 | 苏州新锐合金工具股份有限公司 | Hard alloy mold material for fastener formed through cold upsetting and preparation method of hard alloy mold material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273094A (en) * | 2019-08-05 | 2019-09-24 | 赣州锐科合金材料有限公司 | A kind of preparation method of cemented carbide powder |
| CN114769475A (en) * | 2022-03-16 | 2022-07-22 | 江阴市腾马标准件工具有限公司 | High-strength thread rolling wheel based on hard alloy and preparation process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109811236B (en) | 2020-11-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109811237A (en) | A kind of high-performance carbide material | |
| CN109402479B (en) | NbC-based light metal ceramic alloy with high wear resistance and high toughness and preparation method thereof | |
| CN103667844B (en) | Hard alloy for low-load high-speed punching precision mold and preparation method thereof | |
| CN109848420A (en) | A kind of 440C stainless steel metal powder injection forming method and its product | |
| CN109972015A (en) | Ti (C, N) based metal ceramic cutter material and preparation method thereof | |
| CN110358960B (en) | Preparation method of high-strength and high-toughness Ti (C, N) -based metal ceramic | |
| CN108118230B (en) | Hard alloy and preparation method thereof | |
| CN109811236A (en) | A kind of preparation method of high-performance carbide material | |
| CN110373592A (en) | A kind of Ti (C, N) based metal ceramic cutter material and preparation method thereof | |
| CN111304479A (en) | Preparation method of VCrNbMoW refractory high-entropy alloy | |
| CN103276268A (en) | High-performance hard alloy and manufacturing method thereof | |
| CN112662930A (en) | High-entropy die steel material and preparation method thereof | |
| EP0578031B1 (en) | Sintered carbonitride alloy and method of its production | |
| US11891682B2 (en) | Iron-based sintered alloy and method for producing the same | |
| CN112981265A (en) | Carbon-free high-speed steel and preparation method thereof | |
| CN116815139A (en) | Titanium-niobium alloy sputtering target material and preparation method and application thereof | |
| CN114951639B (en) | High-density fine-grain structure molybdenum alloy plug and preparation method thereof | |
| CN110052599A (en) | A kind of 108 or more low density rigid alloying pellet of diameter and preparation method thereof | |
| CN107287472B (en) | A kind of viscose staple fibre cutoff tool that the powder metallurgic method mixed with pure powder manufactures | |
| CN112176237A (en) | Hard alloy and preparation method thereof | |
| CN104561773B (en) | Powder metallurgy material for molds and preparation method thereof | |
| CN114293083B (en) | Hard alloy for plate and preparation method thereof | |
| CN115305397B (en) | Mo-V alloy, preparation method and application thereof | |
| EP1054073B1 (en) | Ti(C,N)-(Ti,Ta,W)(C,N)-Co alloy for superfinishing cutting tool applications | |
| JP2001089824A (en) | Manufacture of sintered compact of chromium- molybdenum steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A preparation method of high performance cemented carbide material Effective date of registration: 20230109 Granted publication date: 20201110 Pledgee: Dangtu County sub branch of China Post Savings Bank Co.,Ltd. Pledgor: JIFENG PRECISION TOOL (MAANSHAN) CO.,LTD. Registration number: Y2023980030589 |