CN106868375B - A kind of nanometer diamond alkene enhancing hard alloy composite material and preparation method thereof - Google Patents
A kind of nanometer diamond alkene enhancing hard alloy composite material and preparation method thereof Download PDFInfo
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Abstract
A kind of nanometer diamond alkene enhances hard alloy composite material, which is prepared from the following raw materials in parts by weight：30~60 parts of cemented carbide powder, 5~25 parts of nanometer diamond alkene, 663 15~25 parts of Cu rare earths prealloy powder, 5~15 parts of Co powder, 5~15 parts of Ni Mn prealloy powder, the sum of 5~15 parts of Fe P prealloy powder, above-mentioned each raw material are 100 parts.Preparation method is further disclosed in the present invention simultaneously, finds to add in suitable nanometer diamond alkene, under the premise of the original toughness of hard alloy is not reduced, its hardness can be greatly improved, so as to greatly increase its wearability and service life；Secondly the thermal conductivity of nanometer diamond alkene is high, its addition can improve the rate of heat dispation of hard metal article, reduces the probability that cracking is caused due to excessive temperature differentials, stress concentration；Preparation method is simple, and CEMENTED CARBIDE PRODUCTION producer without putting into substantial contribution again, it is easy to accomplish industrialized production.
Description
Technical field
The invention belongs to technical field of composite materials, and in particular to a kind of nanometer diamond alkene enhances hard alloy composite wood
Material and preparation method thereof.
Background technology
With the fast development of the industries such as machine-building, mining and building, the usage amount of wear-resistant material and its product is got over
Come more, while increasingly higher demands also proposed to the quality of product.At present, common wear-resistant material mainly has two
Kind：A kind of is the hard alloy using tungsten carbide as representative, and another kind is the nonmetallic superhard material using diamond as representative.
Have the characteristics that hardness is high, wearability is good, friction coefficient is small and thermal conductivity is high compared to diamond for hard alloy.But hard
Therefore alloy is there is no being fully substituted, because compared to diamond, hard alloy is in addition to good toughness, high-temperature stability
The characteristics of good and weldability can be good, also has the characteristics that technique is relatively easy, production cost is low, product size range is big, perhaps
Multi-diamond product is also needed to using hard alloy as matrix, for example the carcass of diamond-impregnated bit, polycrystalline diamond are compound
Matrix of piece (PDC) etc..
The good characteristic that hard alloy has makes it constantly without substituted, and that uses instead is increasingly wider, especially high
The steel bonded carbide of toughness.Conventional rigid alloy is to be prepared by hard particles and binding agent through powder metallurgy, binding agent
It is soft phase, the excessive toughness of material of content is good but difference of hardness, and content crosses that soft is high but poor toughness, so hardness and toughness are difficult
It takes into account simultaneously.Steel knot hard improves material wilfulness to increase the content of binding agent, this will certainly sacrifice its hardness, because
This is under the premise of steel bonded carbide high tenacity is kept, and to promote its hardness, is one and significantly works.For many years
Research shows that the adjustment being formulated in itself from conventional rigid alloy is difficult, compound is the effective means of Material reinforcement, especially
It is that nano material has effect well in the enhancing of material.
Invention content
The object of the present invention is to provide a kind of nanometer diamond alkene to enhance hard alloy composite material, while provides its preparation side
Method is the another goal of the invention of the present invention.
To achieve the above object, the technical solution that the present invention takes is as follows：
A kind of nanometer diamond alkene enhances hard alloy composite material, the composite material by following parts by weight raw material system
Into：30~60 parts of cemented carbide powder, 5~25 parts of nanometer diamond alkene, 15~25 parts of 663-Cu- rare earths prealloy powder, Co powder 5~15
Part, 5~15 parts of Ni-Mn prealloy powder, the sum of 5~15 parts of Fe-P prealloy powder, above-mentioned each raw material are 100 parts.In the present invention, remove
Outside nanometer diamond alkene, the granularity of all the components is between 0.1~10um.
The nanometer diamond alkene must be handled before using through over cleaning and ti coat on diamond, grain size proportion 50nm：100nm：
250nm=(1-2)：(2-3)：(4-5).
The nanometer diamond alkene using it is preceding cleaning and ti coat on diamond handle the specific steps are：
A) ultrasonic wave alkali cleaning：Nanometer diamond alkene is placed in ultrasonic wave alkali cleaning in lye, the ultrasonic frequency used for 25~
30KHz, lye are the NaOH solution of concentration 8%~12%, and alkali liquid temperature is 50 DEG C~60 DEG C, and mixing speed is 25~30rpm,
Scavenging period is 25~30min；
B) ultrasonic cleaning：Ultrasonic frequency is 30KHz, and cleaning solution is deionized water, mixing speed for 25~
30rpm, mixing time are 20~30min, take supernatant liquor pH value determination, and cleaning is until pH=7 repeatedly；
C) acid-wash activation：Pickle is a concentration of 25%~30% sulfuric acid solution, and pickling temperature is controlled at 50~60 DEG C, stirred
Speed is mixed as 15~20rpm, mixing time is 20~30min, to achieve the purpose that raw material surface active；
D) ultrasonic wave water washing：Ultrasonic wave water washing be room temperature cleaning, ultrasonic frequency be 30~40KHz, water lotion for go from
Sub- water.Raw material is entered in deionized water and Stirring, rotary rpm are 20~25rpm, mixing time is 8~10min, is taken
Layer clear liquid pH value determination, cleaning is until pH=7 repeatedly；
E) vacuum titanizing：By the nanometer diamond alkene particle after cleaning, drying and titanium trichloride and titanium hydride powders mixing,
700~800 DEG C are heated under vacuum environment and carries out 1~2h of the micro- evaporation titanizing processing of vacuum.
In the 663- Cu- rare earth prealloy powder, Sn5~7%, Zn5~7%, Pb2~4%, rare earth 1~3%, surplus Cu
Powder；The weight ratio of Ni and Mn is 2 in Ni-Mn prealloy powder:The weight ratio of Fe and P is 5 in 1, Fe-P prealloy powder:1.
Mixing of the cemented carbide powder for one or both of tungsten carbide or titanium carbide.
The preparation method of the nanometer diamond alkene enhancing hard alloy composite material, includes the following steps：
1）All powders in addition to nanometer diamond alkene are added to 2~3h of grinding distribution in absolute ethyl alcohol and obtain A liquid, it will
Nanometer diamond alkene after treatment under the rotating speed of 1000~1500rpm, using weight ratio as（3~5）:100 ratio arm stirs
It mixes side to be added in absolute ethyl alcohol, 2~3h is disperseed under the ultrasound of 30~40KHz and obtains B liquid, it is then that both A liquid and B liquid is mixed
It closes, continues to be dispersed with stirring 3~5h obtaining mixed slurry；
2）Mixed slurry is put into evaporimeter, 10~15h is dried in vacuo at 100 DEG C；
3）Dried mixture is mixed into 3~5h in three-dimensional material mixer, then static pressure excludes gas in static pressure machine,
Finally it is broken into the particle of 1~10mm sizes；
4）Compacting and sintering：
Compacting：Broken particulate material is fitted into mold, is pressed into green compact；
Microwave sintering：The green compact microwave sintering that will be suppressed is warming up to 600~700 DEG C, heat preservation with the speed of 10 DEG C/min
3~5h, then drops to room temperature with the speed of 5 DEG C/min, and entire sintering process carries out under a shielding gas；
Hot pressed sintering：The block that microwave is pre-sintered is put into the graphite jig cleaned, carries out vacuum heating-press sintering：First
Pressure is uniformly raised to 20~25MPa in 3min, temperature is uniformly raised to 1000~1100 DEG C, keeps the temperature 3~5min, Ran Houting
Heat, after temperature is down to 750~800 DEG C, sample is put into incubator, naturally cools to room temperature by removal pressure.
Compared with prior art, the present invention it has the advantages that：
1）Suitable nanometer diamond alkene is added in, under the premise of the original toughness of hard alloy is not reduced, it can be greatly improved
Hardness, so as to greatly increase its wearability and service life；
2）The thermal conductivity of nanometer diamond alkene is high, its addition can improve the rate of heat dispation of hard metal article, reduce because of temperature
Poor excessive, stress concentration, and cause the probability of cracking；
3）The preparation method of this composite material is simple, and system can be realized on the basis of the preparation of existing ordinary rigid alloy
Standby, in other words, CEMENTED CARBIDE PRODUCTION producer without putting into substantial contribution again, it is therefore easy to realize industrialized production.
Description of the drawings
Fig. 1 is variation relation of the composite hardness with nanometer diamond alkene content；
Fig. 2 is variation relation of the composite material bending strength with nanometer diamond alkene content；
Fig. 3 is variation relation of the composite material wear resistance ratio with nanometer diamond alkene content；
Fig. 4 is variation relation of the material wear ability with sintering pressure；
Fig. 5 is variation relation of the material wear ability with sintering time；
Fig. 6 is variation relation of the material wear ability with sintering temperature.
Specific embodiment
The present invention is described further with reference to embodiments.
Embodiment 1
A kind of nanometer diamond alkene enhances hard alloy composite material, the composite material by following parts by weight raw material system
Into：30 parts of cemented carbide powder, 25 parts of nanometer diamond alkene, 15 parts of 663-Cu- rare earths prealloy powder, 15 parts of Co powder, Ni-Mn prealloys
5 parts of powder, 10 parts of Fe-P prealloy powder.The nanometer diamond alkene must be handled before using through over cleaning and ti coat on diamond, and granularity is matched
Than for 50nm：100nm：250nm=1：2：4.In the 663- Cu- rare earth prealloy powder, Sn5~7%, Zn5~7%, Pb2~
4%, rare earth 1~3%, surplus is Cu powder；The weight ratio of Ni and Mn is 2 in Ni-Mn prealloy powder:In 1, Fe-P prealloy powder Fe and
The weight ratio of P is 5:1.The cemented carbide powder is tungsten carbide.
It must be through following pretreatment before the nanometer diamond alkene addition：
A) ultrasonic wave alkali cleaning：Nanometer diamond alkene is placed in ultrasonic wave alkali cleaning in lye, the ultrasonic frequency used for
25KHz, lye are the NaOH solution of concentration 8%, and alkali liquid temperature is 50 DEG C~60 DEG C, mixing speed 25rpm, and scavenging period is
25min；
B) ultrasonic cleaning：Ultrasonic frequency is 30KHz, and cleaning solution is deionized water, and mixing speed 25rpm is stirred
The time is mixed as 20min, takes supernatant liquor pH value determination, cleaning is until pH=7 repeatedly；
C) acid-wash activation：Pickle is a concentration of 25% sulfuric acid solution, and pickling temperature control is in 50 DEG C, mixing speed
15rpm, mixing time is 20~30min, to achieve the purpose that raw material surface active；
D) ultrasonic wave water washing：Ultrasonic wave water washing is cleaned for room temperature, and ultrasonic frequency 30KHz, water lotion is deionized water.
Raw material is entered in deionized water and Stirring, rotary rpm 20rpm, mixing time 8min, supernatant liquor is taken to measure pH
Value, cleaning is until pH=7 repeatedly；
E) vacuum titanizing：By the nanometer diamond alkene particle after cleaning, drying and titanium trichloride and titanium hydride powders mixing,
700 DEG C are heated under vacuum environment and carries out the micro- evaporation titanizing processing 1h of vacuum.
The preparation method of the nanometer diamond alkene enhancing hard alloy composite material, includes the following steps：
1）All powders in addition to nanometer diamond alkene are added to grinding distribution 2h in absolute ethyl alcohol and obtain A liquid, it will be through
Nanometer diamond alkene of crossing that treated is under the rotating speed of 1000rpm, using weight ratio as 3:100 ratio is added to anhydrous while stirring
In ethyl alcohol, under the ultrasound of 30KHz disperseing 2h obtains B liquid, then by the mixing of both A liquid and B liquid, continues to be dispersed with stirring 3h obtaining
Mixed slurry；
2）Mixed slurry is put into evaporimeter, 10h is dried in vacuo at 100 DEG C；
3）Dried mixture is mixed into 3h in three-dimensional material mixer, then static pressure excludes gas in static pressure machine, most
It is broken into the particle of 1~10mm sizes afterwards；
4）Compacting and sintering：
Compacting：Broken particulate material is fitted into mold, is pressed into green compact；
Microwave sintering：The green compact microwave sintering that will be suppressed is warming up to 600 DEG C with the speed of 10 DEG C/min, keeps the temperature 3h, so
Room temperature is dropped to the speed of 5 DEG C/min afterwards, entire sintering process carries out under a shielding gas；
Hot pressed sintering：The block that microwave is pre-sintered is put into the graphite jig cleaned, carries out vacuum heating-press sintering：First
Pressure is uniformly raised to 20MPa in 3min, temperature is uniformly raised to 1000 DEG C, keeps the temperature 3min, then stops heat, treat that temperature is down to
After 750 DEG C, sample is put into incubator, naturally cools to room temperature by removal pressure.
Embodiment 2
A kind of nanometer diamond alkene enhances hard alloy composite material, the composite material by following parts by weight raw material system
Into：45 parts of hard alloy, 5 parts of nanometer diamond alkene, 25 parts of 663-Cu- rare earths prealloy powder, 5 parts of Co powder, Ni-Mn prealloy powder 15
Part, 5 parts of Fe-P prealloy powder.The nanometer diamond alkene must be handled before using through over cleaning and ti coat on diamond, and grain size proportion is
50nm：100nm：250nm=2：3： 5.In the 663- Cu- rare earth prealloy powder, Sn5~7%, Zn5~7%, Pb2~4% is dilute
Soil 1~3%, surplus are Cu powder；The weight ratio of Ni and Mn is 2 in Ni-Mn prealloy powder:The weight of Fe and P in 1, Fe-P prealloy powder
Amount is than being 5:1.The cemented carbide powder is titanium carbide.
It must be through following pretreatment before the nanometer diamond alkene addition：
A) ultrasonic wave alkali cleaning：Nanometer diamond alkene is placed in ultrasonic wave alkali cleaning in lye, the ultrasonic frequency used for
30KHz, lye are the NaOH solution of concentration 12%, and alkali liquid temperature is 60 DEG C, mixing speed 30rpm, scavenging period 30min；
B) ultrasonic cleaning：Ultrasonic frequency is 30KHz, and cleaning solution is deionized water, and mixing speed 30rpm is stirred
The time is mixed as 30min, takes supernatant liquor pH value determination, cleaning is until pH=7 repeatedly；
C) acid-wash activation：Pickle is a concentration of 30% sulfuric acid solution, and pickling temperature control is in 60 DEG C, mixing speed
20rpm, mixing time 30min, to achieve the purpose that raw material surface active；
D) ultrasonic wave water washing：Ultrasonic wave water washing is cleaned for room temperature, and ultrasonic frequency 40KHz, water lotion is deionized water.
Raw material is entered in deionized water and Stirring, rotary rpm 25rpm, mixing time 10min, supernatant liquor is taken to measure pH
Value, cleaning is until pH=7 repeatedly；
E) vacuum titanizing：By the nanometer diamond alkene particle after cleaning, drying and titanium trichloride and titanium hydride powders mixing,
800 DEG C are heated under vacuum environment and carries out the micro- evaporation titanizing processing 2h of vacuum.
The preparation method of the nanometer diamond alkene enhancing hard alloy composite material, includes the following steps：
1）All powders in addition to nanometer diamond alkene are added to grinding distribution 3h in absolute ethyl alcohol and obtain A liquid, it will be through
Nanometer diamond alkene of crossing that treated is under the rotating speed of 1500rpm, using weight ratio as 5:100 ratio is added to anhydrous while stirring
In ethyl alcohol, under the ultrasound of 40KHz disperseing 3h obtains B liquid, then by the mixing of both A liquid and B liquid, continues to be dispersed with stirring 5h obtaining
Mixed slurry；
2）Mixed slurry is put into evaporimeter, 15h is dried in vacuo at 100 DEG C；
3）Dried mixture is mixed into 5h in three-dimensional material mixer, then static pressure excludes gas in static pressure machine, most
It is broken into the particle of 1~10mm sizes afterwards；
4）Compacting and sintering：
Compacting：Broken particulate material is fitted into mold, is pressed into green compact；
Microwave sintering：The green compact microwave sintering that will be suppressed is warming up to 700 DEG C with the speed of 10 DEG C/min, keeps the temperature 5h, so
Room temperature is dropped to the speed of 5 DEG C/min afterwards, entire sintering process carries out under a shielding gas；
Hot pressed sintering：The block that microwave is pre-sintered is put into the graphite jig cleaned, carries out vacuum heating-press sintering：First
Pressure is uniformly raised to 25MPa in 3min, temperature is uniformly raised to 1100 DEG C, keeps the temperature 5min, then stops heat, treat that temperature is down to
After 800 DEG C, sample is put into incubator, naturally cools to room temperature by removal pressure.
Embodiment 3
A kind of nanometer diamond alkene enhances hard alloy composite material, the composite material by following parts by weight raw material system
Into：60 parts of cemented carbide powder, 10 parts of nanometer diamond alkene, 15 parts of 663-Cu- rare earths prealloy powder, 5 parts of Co powder, Ni-Mn prealloys
5 parts of powder, 5 parts of Fe-P prealloy powder.The nanometer diamond alkene must be handled before using through over cleaning and ti coat on diamond, with embodiment 1,
Its grain size proportion is 50nm：100nm：250nm=1：2：5.In the 663- Cu- rare earth prealloy powder, Sn5~7%, Zn5~
7%, Pb2~4%, rare earth 1~3%, surplus are Cu powder；The weight ratio of Ni and Mn is 2 in Ni-Mn prealloy powder:1, Fe-P prealloy
The weight ratio of Fe and P is 5 in powder:1.The cemented carbide powder is tungsten carbide.
The preparation method is the same as that of Example 1 for the nanometer diamond alkene enhancing hard alloy composite material.
Performance detection
1st, nanometer diamond alkene content is tested
Hardness (HRA), bending strength and wear resistance ratio are 3 main performance index of hard alloy, we are by detecting this
Several indexs weigh influence of the addition to Cemented Carbide Properties of nanometer diamond alkene.Hardness (HRA) is by GB/T230.1-2009
Requirement carry out, the results are shown in Figure 1；Bending strength is carried out by the requirement of GB/T3851-2015, and the results are shown in Figure 2；Abrasion
Than the requirement progress by JB/T3235-1999, the results are shown in Figure 3.
From figure 1 it appears that the hardness of composite material increases with the increase of nanometer diamond alkene content, particularly add
Amount increased particularly evident before 15%.Bending strength is proportional with toughness of material, is commonly used to the tough of reaction hard alloy
Property, from figure 2 it can be seen that when nanometer diamond alkene adds in less, it is smaller on the bending strength influence of composite material, be more than
After 15%, bending strength declines to a great extent.The hardness and toughness of material are to influence the principal element of its wearability, and wear resistance ratio is anti-
A kind of important method of material wear ability is answered, from figure 3, it can be seen that adding in the wear-resisting of composite material with nanometer diamond alkene
Property want to reduce after increasing, maximum when content is 15% or so, this is very identical with Fig. 1 and Fig. 2, because working as nanometer diamond
At 15% or so, the hardness of material is greatly improved the content of alkene, and toughness is influenced smaller.
It is because nanometer diamond alkene is a kind of super hard nano material, and hardness is significantly larger than hard this phenomenon why occur
Matter alloy, its addition inherently improve the integral hardness of composite material.And the bond strength of nanometer diamond alkene and metal is not
Height, but very high through pretreated its surface-active of nanometer diamond alkene such as over cleaning, it is attached to be conducive to chemical plating, by ti coat on diamond
Nanometer diamond alkene can preferably be scattered in metal powder, and can be formed in high temperature sintering with the carbon on nanometer diamond alkene surface
Chemical bonds generate superhard material TiC, the bond strength between nanometer diamond alkene and metallic matrix are made to have obtained very big carry
It is high.Nanometer diamond alkene fine size simultaneously, diamond alkene is filled in the gap between metallic particles when adding on a small quantity, does not change hard
Alloy original structure, while material density can be improved, so a small amount of toughness that material can also be slightly improved when adding in, with adding
Entering being continuously increased for amount, excessive nanometer diamond alkene can destroy original Mathematical Analysis of Al-li Alloy Containing Rare Earth, become the component part of matrix, although
Binding force between nanometer diamond alkene and metal improves, but the intensity being also not achieved between metal, so composite wood can be reduced
The intensity and toughness of material.
2nd, sintering process is tested
Sintering process is a key factor for influencing Cemented Carbide Properties, we weigh sintering by detecting wear resistance ratio
The influence of pressure, sintering temperature and sintering time to composite material, as a result respectively as shown in Figure 4,5, 6.
Figure 4, it is seen that with the increase of sintering pressure, material wear ability is consequently increased, but is increased more than 25MPa
Add slowly, and production cost can be significantly increased in excessively high pressure, so sintering pressure is more suitable in 20-25MPa；From Fig. 5
As can be seen that with the increase of sintering time, the wearability of material first increases to be greatly reduced afterwards, this is because nanometer diamond alkene
High-temperature stability is relatively poor, and sintering time loses humidification more than can largely be carbonized after 6min, so sintering time controls
It is more suitable in 4-6min；From fig. 6 it can be seen that as the wearability of the raising material of sintering temperature is first sharply increased, after
It is greatly reduced, this is because temperature is too low, binding agent does not reach eutectic point or fusing is insufficient, and sintering effect is poor, and temperature is excessively high
Graphene meeting flash carbonization, loses enhancing effect, so sintering temperature is more suitable at 1050 degree or so.
Claims (5)
1. a kind of nanometer diamond alkene enhances hard alloy composite material, which is characterized in that the composite material is by following parts by weight
Raw material be made：30~60 parts of cemented carbide powder, 5~25 parts of nanometer diamond alkene, 15~25 parts of 663-Cu- rare earths prealloy powder,
5~15 parts of Co powder, 5~15 parts of Ni-Mn prealloy powder, the sum of 5~15 parts of Fe-P prealloy powder, above-mentioned each raw material are 100 parts.
2. nanometer diamond alkene as described in claim 1 enhances hard alloy composite material, which is characterized in that the nanometer diamond alkene
It must be handled before through over cleaning and ti coat on diamond, grain size proportion 50nm：100nm：250nm=(1-2)：(2-3)：(4-
5)；
The nanometer diamond alkene using it is preceding cleaning and ti coat on diamond handle the specific steps are：
A) ultrasonic wave alkali cleaning：Nanometer diamond alkene is placed in ultrasonic wave alkali cleaning in lye, the ultrasonic frequency used for 25~
30KHz, lye are the NaOH solution of concentration 8%~12%, and alkali liquid temperature is 50 DEG C~60 DEG C, and mixing speed is 25~30rpm,
Scavenging period is 25~30min；
B) ultrasonic cleaning：Ultrasonic frequency is 30KHz, and cleaning solution is deionized water, and mixing speed is 25~30rpm, is stirred
The time is mixed as 20~30min, takes supernatant liquor pH value determination, cleaning is until pH=7 repeatedly；
C) acid-wash activation：Pickle is a concentration of 25%~30% sulfuric acid solution, and pickling temperature is controlled at 50~60 DEG C, stirring speed
It spends for 15~20rpm, mixing time is 20~30min, to achieve the purpose that raw material surface active；
D) ultrasonic wave water washing：Ultrasonic wave water washing is cleaned for room temperature, and ultrasonic frequency is 30~40KHz, and water lotion is deionized water；
Raw material is entered in deionized water and Stirring, rotary rpm are 20~25rpm, mixing time is 8~10min, is taken
Layer clear liquid pH value determination, cleaning is until pH=7 repeatedly；
E) vacuum titanizing：By the nanometer diamond alkene particle after cleaning, drying and titanium trichloride and titanium hydride powders mixing, in vacuum
700~800 DEG C are heated under environment and carries out 1~2h of the micro- evaporation titanizing processing of vacuum.
3. nanometer diamond alkene as claimed in claim 2 enhances hard alloy composite material, which is characterized in that the 663- Cu- are dilute
In native prealloy powder, Sn5~7%, Zn5~7%, Pb2~4%, rare earth 1~3%, surplus is Cu powder；In Ni-Mn prealloy powder Ni and
The weight ratio of Mn is 2:The weight ratio of Fe and P is 5 in 1, Fe-P prealloy powder:1.
4. nanometer diamond alkene as claimed in claim 3 enhances hard alloy composite material, which is characterized in that the cemented carbide powder
Mixing for one or both of tungsten carbide or titanium carbide.
5. the preparation method of any nanometer diamond alkene enhancing hard alloy composite materials of claim 2-4, which is characterized in that
Include the following steps：
1）All powders in addition to nanometer diamond alkene are added to 2~3h of grinding distribution in absolute ethyl alcohol and obtain A liquid, will be passed through
Treated nanometer diamond alkene under the rotating speed of 1000~1500rpm, using weight ratio as（3~5）:100 ratio is while stirring
It is added in absolute ethyl alcohol, 2~3h is disperseed under the ultrasound of 30~40KHz and obtains B liquid, then by the mixing of both A liquid and B liquid,
Continue to be dispersed with stirring 3~5h and obtain mixed slurry；
2）Mixed slurry is put into evaporimeter, 10~15h is dried in vacuo at 100 DEG C；
3）Dried mixture is mixed into 3~5h in three-dimensional material mixer, then static pressure excludes gas in static pressure machine, finally
It is broken into the particle of 1~10mm sizes；
4）Compacting and sintering：
Compacting：Broken particulate material is fitted into mold, is pressed into green compact；
Microwave sintering：The green compact microwave sintering that will be suppressed is warming up to 600~700 DEG C with the speed of 10 DEG C/min, and heat preservation 3~
5h, then drops to room temperature with the speed of 5 DEG C/min, and entire sintering process carries out under a shielding gas；
Hot pressed sintering：The block that microwave is pre-sintered is put into the graphite jig cleaned, carries out vacuum heating-press sintering：First exist
Pressure is uniformly raised to 20~25MPa in 3min, temperature is uniformly raised to 1000~1100 DEG C, keeps the temperature 3~5min, then stops heat,
After temperature is down to 750~800 DEG C, sample is put into incubator, naturally cools to room temperature by removal pressure.
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| CN102632296A (en) * | 2012-03-27 | 2012-08-15 | 中国有色桂林矿产地质研究院有限公司 | Cutting head of diamond saw blade for cutting metal |
| CN103878886A (en) * | 2014-01-28 | 2014-06-25 | 湖北力莱超硬材料有限公司 | Material formula of diamond bit and manufacturing method thereof |
| CN105861867A (en) * | 2016-06-15 | 2016-08-17 | 苏州洪河金属制品有限公司 | High-temperature-resistance alloy added with tungsten carbide and preparation method of alloy |
| CN105903272A (en) * | 2016-05-09 | 2016-08-31 | 河南省豫星华晶微钻有限公司 | Ceramic filter core containing nanometer carbon crystal and nanometer diamond alkene blends |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000052108A (en) * | 1998-08-05 | 2000-02-22 | Mitsubishi Materials Corp | Very high pressure cutting tool excellent in high load heavy cutting performance |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102632296A (en) * | 2012-03-27 | 2012-08-15 | 中国有色桂林矿产地质研究院有限公司 | Cutting head of diamond saw blade for cutting metal |
| CN103878886A (en) * | 2014-01-28 | 2014-06-25 | 湖北力莱超硬材料有限公司 | Material formula of diamond bit and manufacturing method thereof |
| CN105903272A (en) * | 2016-05-09 | 2016-08-31 | 河南省豫星华晶微钻有限公司 | Ceramic filter core containing nanometer carbon crystal and nanometer diamond alkene blends |
| CN105861867A (en) * | 2016-06-15 | 2016-08-17 | 苏州洪河金属制品有限公司 | High-temperature-resistance alloy added with tungsten carbide and preparation method of alloy |
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