CN107460389B - A method of it preparing anti-sliding nail core composition and its is used to prepare anti-sliding nail core - Google Patents
A method of it preparing anti-sliding nail core composition and its is used to prepare anti-sliding nail core Download PDFInfo
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- CN107460389B CN107460389B CN201610387861.9A CN201610387861A CN107460389B CN 107460389 B CN107460389 B CN 107460389B CN 201610387861 A CN201610387861 A CN 201610387861A CN 107460389 B CN107460389 B CN 107460389B
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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
- C22C29/04—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 carbonitrides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/16—Both compacting and sintering in successive or repeated steps
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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
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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
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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
- C22C29/005—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides comprising a particular metallic binder
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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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
Abstract
The present invention relates to a kind of methods for preparing anti-sliding nail core composition and its being used to prepare anti-sliding nail core.The present invention, which is used, prepares anti-sliding nail core composition by optimization, described to prepare anti-skid stud composition, is consisted of the following components in percentage by weight on the basis of the gross mass of composition: cobalt 5%~15%；Nickel 5%~15%；Tungsten carbide 10%~50%；Molybdenum carbide 5~20%；Remaining is titanium carbonitride；Good toughness, wear-resistant and light weight anti-sliding nail core is prepared using the method for powder metallurgy.The intensity and toughness for the anti-sliding nail core that the method for the present invention is prepared have obtained significant raising, the Unit Weight of blind rivet is reduced simultaneously, energy conservation more convenient to use, and the method for the present invention stabilization easy to operate, low energy consumption are economic and environment-friendly and raw materials used cheap and easy to get, are suitble to industrialized production.
Description
Technical field
The present invention relates to anti-sliding nail core technical field, more particularly to it is a kind of prepare anti-sliding nail core composition and its
The method for being used to prepare anti-sliding nail core.
Background technique
It drives a vehicle in ice and snow weather, since coefficient of road adhesion is very low, tire is easy to skid, and considerably increases the danger of driving
It is dangerous.In order to prevent vehicle ice and snow weather drive a vehicle when skid, be generally controlled by two ways, one is by pair
The control system of vehicle carries out the control of drive system, but this control system versatility is poor, needs for different
Vehicle is developed again, in complicated winter pavement behavior, it is difficult to ensure that the adaptivity and reliability of system；Another anti-skidding side
Method is exactly that tyre slip is prevented using mechanical non-skid feature, is that fitting overall chain prevents tire from beating on tire in the past
It is sliding, since fitting overall chain is very inconvenient, and installs after antiskid chain and have some influences, therefore many people to the driving of vehicle
All it is unwilling to install.A kind of special non-skid tyre is developed by foreign countries in recent years, it is deep by user instead of previous antiskid chain
Like.
Existing non-skid tyre is that uniformly configuration is fixed on tire, corresponding with wheel rim a set of by groups such as anti-skid studs
At antiskid system, and can using antiskid system, (such as China Patent No. be 00120326.6, entitled " anti-skidding by needed for road conditions
Disclosed in the patent document of nail tire, its manufacturing method and tire stud and its manufacture mold ").It is now most common on the market
Non-skid tyre be exactly bridgestone BLIZZAK ice-snow field special tyre, and this tire as above said with anti-
Sliding nail ensure that the grip performance of ice and snow road, and the anti-skid stud in this insertion automobile tire is typically all to use hard alloy
The anti-sliding nail core of production is packed into anti-skidding nail seat, then anti-skid stud pedestal is mounted in automobile tire surface play the role of it is anti-skidding.
In order to guarantee the wearability of non-skid tyre, anti-sliding nail core used is generally with cemented carbide material production (as on non-skid tyre
State's number of patent application is 200410007143, disclosed in the patent document of entitled " automobile tyre antiskid nail and manufacturing method "
), in order to improve non-skid property, also there are many people to improve on anti-skidding pin structure, but rarely have people to anti-sliding nail core
Material is studied, although leading to common hard alloy has the characteristics that high rigidity, low temperature resistant, its density are big (usually all
In 12.0g/cm3), it appears it is excessively heavy, and hard alloy is expensive.
Summary of the invention
It is an object of the invention to solve prior art problem, provide it is a kind of prepare anti-sliding nail core composition, using this
Anti-sliding nail core intensity obtained by the resulting anti-sliding nail core of anti-sliding nail core composition is high, wear-resistant and light weight.
It is another object of the present invention to provide a kind of method for preparing anti-sliding nail core, optimizing application prepares anti-skid stud
Core composition provides a kind of anti-sliding nail core production technology being simple and efficient, and is conducive in industrialization promotion application, economic section
Energy.
The object of the invention is achieved through the following technical solutions:
It one kind is provided states and prepare anti-sliding nail core composition, which is characterized in that the composition is by following weight percent
Group be grouped as:
Surplus is titanium carbonitride；
The granularity of the cobalt and nickel is 1.0~2.0 μm, and the granularity of tungsten carbide is 2.0~6.0 μm, the granularity of titanium carbonitride
It is 2.0~6.0 μm, the granularity of molybdenum carbide is 1.0~2.0 μm.
It is prepared in anti-sliding nail core composition above-mentioned, cobalt and nickel are to play the work for increasing toughness of material as binder
With；Tungsten carbide can increase the hardness of material；Titanium carbonitride and molybdenum carbide have higher melt and hardness, good thermal stability and
The features such as mechanical stability and fabulous corrosion resistance.The applicant has determined the combination of these components and each by many experiments
The above-mentioned percentage range of component and the granularity of each component make in above-mentioned composition and percentage range using the present invention
The anti-sliding nail core that anti-sliding nail core is prepared with composition for preparing there is high intensity, light weight and anti abrasive excellent performance,
Its preparation process is simple and environmentally-friendly simultaneously.
Preferably, the composition consists of the following components in percentage by weight:
Surplus is titanium carbonitride；
The granularity of the cobalt and nickel is 1.0~2.0 μm, and the granularity of tungsten carbide is 3.0~5.0 μm, the granularity of titanium carbonitride
It is 3.0~5.0 μm, the granularity of molybdenum carbide is 1.0~2.0 μm.
It is highly preferred that the composition consists of the following components in percentage by weight:
Surplus is titanium carbonitride；
The granularity of the cobalt and nickel is 1.0~2.0 μm, and the granularity of tungsten carbide is 3.0~5.0 μm, the granularity of titanium carbonitride
It is 3.0~5.0 μm, the granularity of molybdenum carbide is 1.0~2.0 μm.
It is further preferred that the composition consists of the following components in percentage by weight:
Surplus is titanium carbonitride；
The granularity of the cobalt and nickel is 1.0~2.0 μm, and the granularity of tungsten carbide is 3.0~5.0 μm, the granularity of titanium carbonitride
It is 3.0~5.0 μm, the granularity of molybdenum carbide is 1.0~2.0 μm.
Still further preferably, the composition consists of the following components in percentage by weight:
Surplus is titanium carbonitride；
The granularity of the cobalt and nickel is 1.0~2.0 μm, and the granularity of tungsten carbide is 3.0~5.0 μm, the granularity of titanium carbonitride
It is 3.0~5.0 μm, the granularity of molybdenum carbide is 1.0~2.0 μm.
Most preferably, the composition consists of the following components in percentage by weight:
Surplus is titanium carbonitride；
The granularity of the cobalt and nickel is 1.0~2.0 μm, and the granularity of tungsten carbide is 3.0~5.0 μm, the granularity of titanium carbonitride
It is 3.0~5.0 μm, the granularity of molybdenum carbide is 1.0~2.0 μm.
In general, it is controlled within 20% using accounting when tungsten carbide is prepared for high-strength material, this is because with
The intensity of the increase resulting materials of dosage is not further added by, and is declined instead, and the inventors discovered that, tungsten carbide in the technical program
At 25% or more, the intensity of gained anti-sliding nail core can increase usage percentage with the increase of dosage；In addition, each component
Granularity is related to the performance of finally obtained anti-sliding nail core, and granularity is too thick, and the anti-sliding nail core hardness produced is low, and wearability is not
Well, anti-sliding nail core rapid wear, antiskid function cannot be used effectively when use；Granularity is too thin, the anti-sliding nail core produced
Excessive high hardness, intensity is inadequate, and anti-sliding nail core is frangible when use, does not have anti-skidding effect.
The method that anti-sliding nail core prepares anti-sliding nail core with composition is prepared using any one of the above, comprising the following steps:
Step S1. takes anti-sliding nail core composition, and abrasive media is added, is ground, and addition in two hours forms before discharging
Then agent is filtered, the mixed slurry after taking filtration is put into vacuum oven and is dried, gained mixture to point discharging；
Step S2. takes mixture obtained by appropriate S1 to be placed in granulator, pelletizes, stuff and other stuff is packed into mold
It is interior, it is pressed into anti-sliding nail core blank；
Step S3. sinter molding: anti-sliding nail core blank obtained by S2 is packed into graphite boat, is put into vacuum drying oven and is burnt
Knot, obtains the anti-sliding nail core.
Preferably, abrasive media described in step S1 is dehydrated alcohol, the additional amount of the dehydrated alcohol and prepares anti-skid stud
The volume mass ratio of the amount of core composition is 400~600:1ml/kg；Milling time described in step S1 is 36h~48h；It is described
Grinding the lap tool that uses is ball mill, and the revolving speed of the ball mill is 34~40r/min, the mill ball be outer diameter 5~
10.5mm is highly the YG8 sintered carbide ball of 14~18mm, the mill ball and what is be added prepare anti-sliding nail core composition
Weight ratio is 6~12: 1；The additional amount of forming agent described in step S1 and the mass ratio of mixture are 35~50:1g/kg.
Preferably, the pressure that anti-sliding nail core blank is suppressed described in step S2 is 300~2500MPa.
Preferably, be sintered described in step S3 successively includes removing forming agent, pre-burning and vacuum-sintering three phases；It is described de-
Except the forming agent stage be by anti-sliding nail core blank in vacuum degree is 15~100Pa, under conditions of temperature is 150 DEG C~450 DEG C, protect
3.0~6.0h of temperature；It in vacuum degree is 15~100Pa that the pre-burning stage, which is by anti-sliding nail core blank, and temperature is 450 DEG C~800
Under conditions of DEG C, 0.5~1.0h is kept the temperature；The vacuum-sintering stage be by anti-sliding nail core blank vacuum degree be 0.1~
5.0Pa keeps the temperature 1.0~1.5h under conditions of temperature is 800 DEG C~1480 DEG C.
Compared with prior art, beneficial effects of the present invention:
Of the present invention to prepare anti-sliding nail core composition, formula is simple and easy to get, breaches tungsten carbide in routine techniques and uses
Amount is no more than 20% limitation, accurately determines by the present inventor to component, obtained composition is used to prepare anti-sliding nail core, gained
Anti-sliding nail core good toughness, the wear-resistant and light weight arrived.The intensity for the anti-sliding nail core that the method for the present invention is prepared is shown
The raising of work, while the density of gained anti-sliding nail core substantially reduces so that its weight compared with ordinary rigid alloy material significantly
Reduce, energy conservation more convenient to use, and the method for the present invention stabilization easy to operate, low energy consumption it is economic and environment-friendly and it is raw materials used it is cheap easily
, it is suitble to industrialized production.
Specific embodiment
Present invention be described in more detail combined with specific embodiments below, but specific embodiment do not have to the present invention it is any
The restriction of form.Unless stated otherwise, the various raw materials that the embodiment of the present invention uses can be obtained by regular market purchase or root
It is prepared according to the conventional method of this field, device therefor is experiment commonly used equipment.Unless otherwise defined or described herein, institute herein
All professional and scientific terms used are identical as meaning known to those skilled in the art.
Embodiment 1
By each component specified in table 1, preparation prepares anti-sliding nail core composition, wherein and the granularity of cobalt and nickel is 1.0~
2.0 μm, the granularity of tungsten carbide is 2.0~6.0 μm, and the granularity of titanium carbonitride is 2.0~6.0 μm, the granularity of molybdenum carbide is 1.0~
2.0μm.Anti-sliding nail core is prepared using the method for powder metallurgy, the specific steps are as follows:
S1. above-mentioned reality is taken to prepare anti-sliding nail core composition, then by with its volume mass than grinding for 500:1ml/kg
It is highly the YG8 sintered carbide ball of 16mm, by ball that ball mill, which is added, using outer diameter 10mm in the ethyl alcohol that grinding media concentration is 95%
The revolving speed of grinding machine is set as 38r/min, and adjustment mill ball and the weight ratio for preparing anti-sliding nail core composition being added are 10: 1
Ball milling 40h is carried out, the PEG forming agent that it is 40:1g/kg with the mass ratio of mixture that two hours before discharging, which are added, to point discharging, institute
It obtains slurry to be filtered with 400 meshes, the mixed slurry after taking filtration is put into vacuum oven and is dried, and is 100 in temperature
DEG C, vacuum degree be 100Pa under conditions of be dried, mixture it is spare；
S2. mixture obtained by S1 being placed in granulator, is then pelletized, gained stuff and other stuff is packed into mold,
Apparent density is 2.5g/cm3, then in the case where pressure is the pressure of 1500MPa, it is pressed into anti-sliding nail core blank；
S3. anti-sliding nail core blank obtained by S2 is packed into graphite boat, is put into vacuum drying oven and is sintered, sintering successively includes
Remove forming agent, pre-burning and vacuum-sintering three phases；The removing forming agent stage is by cermet anti-sliding nail core blank
It is that 100Pa keeps the temperature 5.0h under conditions of temperature is 350 DEG C in vacuum degree；The pre-burning stage is by cermet anti-sliding nail core
Blank is that 100Pa keeps the temperature 0.5h under conditions of temperature is 800 DEG C in vacuum degree；The vacuum-sintering stage is by cermet
Anti-sliding nail core blank is 5.0Pa in vacuum degree, and under conditions of temperature is 1450 DEG C, heat preservation 1.0h obtains anti-sliding nail core.Then, to anti-
Sliding blind rivet carries out flexural strength, hardness, wearing coefficient and density and is measured, and test result is as shown in table 1.
Embodiment 2~6
Embodiment 2~6 prepares anti-sliding nail core by each group distribution ratio preparation specified in table 1 unlike the first embodiment and uses
Composition, remaining condition is identical, and test result is as shown in table 1.
Embodiment 7
Unlike the first embodiment, anti-sliding nail core composition, still, cobalt are prepared by each component preparation specified in table 1
Granularity with nickel is 1.0~2.0 μm, and the granularity of tungsten carbide is 3.0~5.0 μm, and the granularity of titanium carbonitride is 2.0~6.0 μm, carbon
The granularity for changing molybdenum is 1.0~2.0 μm, and test result is as shown in table 1.
Embodiment 8
Unlike the first embodiment, anti-sliding nail core composition, still, cobalt are prepared by each component preparation specified in table 1
Granularity with nickel is 1.0~2.0 μm, and the granularity of tungsten carbide is 2.0~6.0 μm, and the granularity of titanium carbonitride is 3.0~5.0 μm, carbon
The granularity for changing molybdenum is 1.0~2.0 μm, and test result is as shown in table 1.
Embodiment 9
Unlike the first embodiment, anti-sliding nail core composition, still, cobalt are prepared by each component preparation specified in table 1
Granularity with nickel is 1.0~2.0 μm, and the granularity of tungsten carbide is 3.0~5.0 μm, and the granularity of titanium carbonitride is 3.0~5.0 μm, carbon
The granularity for changing molybdenum is 1.0~2.0 μm, and test result is as shown in table 1.
Comparative example 1~3
Comparative example 1~3 prepares anti-sliding nail core combination unlike the first embodiment, by each component preparation specified in table 1
Object, remaining condition is identical, and test result is as shown in table 1.
Table 1
Embodiment 10
Anti-sliding nail core composition is prepared in Application Example 9, and anti-sliding nail core is prepared using the method for powder metallurgy,
Specific step is as follows:
S1. above-mentioned reality is taken to prepare anti-sliding nail core composition, then by with its volume mass than grinding for 400:1ml/kg
It is highly the YG8 sintered carbide ball of 14mm, by the revolving speed of ball mill that ball mill, which is added, using outer diameter 6mm in 95% ethyl alcohol of grinding media
It is set as 40r/min, adjustment mill ball carries out ball milling 36h with the weight ratio for preparing anti-sliding nail core composition being added for 6: 1,
The PEG forming agent that it is 50:1g/kg with the mass ratio of mixture that two hours before discharging, which are added, to a point discharging, gained slurry is with 400
Mesh is filtered, and the mixed slurry after taking filtration is put into vacuum oven and is dried, and is 105 DEG C in temperature, vacuum degree is
Be dried under conditions of 50Pa, mixture it is spare；
S2. mixture obtained by S1 is placed in granulator, is pelletized, gained stuff and other stuff is packed into mold, pine dress
Density is 2.0g/cm3, then in the case where pressure is the pressure of 1000MPa, it is pressed into anti-sliding nail core blank；
S3. anti-sliding nail core blank obtained by S2 is packed into graphite boat, is put into vacuum drying oven and is sintered, sintering successively includes
Remove forming agent, pre-burning and vacuum-sintering three phases；The removing forming agent stage is by cermet anti-sliding nail core blank
It is that 60Pa keeps the temperature 6.0h under conditions of temperature is 150 DEG C in vacuum degree；The pre-burning stage is by cermet anti-sliding nail core
Blank is that 100Pa keeps the temperature 1.0h under conditions of temperature is 1050 DEG C in vacuum degree；The vacuum-sintering stage is that metal is made pottery
Porcelain anti-sliding nail core blank is 0.1Pa in vacuum degree, and under conditions of temperature is 1420 DEG C, heat preservation 1.0h obtains anti-sliding nail core.Then, right
Anti-sliding nail core carries out flexural strength, hardness, wearing coefficient and density and is measured, and test result is as shown in table 2.
Embodiment 11
Anti-sliding nail core composition is prepared in Application Example 9, and anti-sliding nail core is prepared using the method for powder metallurgy,
Specific step is as follows:
S1. above-mentioned reality is taken to prepare anti-sliding nail core composition, then by with its volume mass than grinding for 600:1ml/kg
It is highly the YG8 sintered carbide ball of 18mm that ball mill, which is added, using outer diameter 10mm in 95% ethyl alcohol of grinding media, by turning for ball mill
Speed is set as 40r/min, and adjustment mill ball carries out ball milling with the weight ratio for preparing anti-sliding nail core composition being added for 5: 1
48h, the PEG forming agent that it is 45:1g/kg with the mass ratio of mixture that two hours before discharging, which are added, to point discharging, gained slurry is used
400 meshes are filtered, and the mixed slurry after taking filtration is put into vacuum oven and is dried, and are 105 DEG C in temperature, vacuum degree
To be dried under conditions of 100Pa, mixture it is spare；
S2. mixture obtained by S1 is placed in granulator, is pelletized, gained stuff and other stuff is packed into mold, pine dress
Density is 3.8g/cm3, then in the case where pressure is the pressure of 2500MPa, it is pressed into anti-sliding nail core blank；
S3. anti-sliding nail core blank obtained by S2 is packed into graphite boat, is put into vacuum drying oven and is sintered, sintering successively includes
Remove forming agent, pre-burning and vacuum-sintering three phases；The removing forming agent stage is by cermet anti-sliding nail core blank
It is that 15Pa keeps the temperature 3.5h under conditions of temperature is 400 DEG C in vacuum degree；The pre-burning stage is by cermet anti-sliding nail core
Blank is that 50Pa keeps the temperature 0.5h under conditions of temperature is 1150 DEG C in vacuum degree；The vacuum-sintering stage is by cermet
Anti-sliding nail core blank is 2.0Pa in vacuum degree, and under conditions of temperature is 1480 DEG C, heat preservation 1.0h obtains anti-sliding nail core；Then, to anti-
Sliding blind rivet carries out flexural strength, hardness, wearing coefficient and density and is measured, and test result is as shown in table 2.
Embodiment 12
Anti-sliding nail core composition is prepared in Application Example 9, and anti-sliding nail core is prepared using the method for powder metallurgy,
Specific step is as follows:
S1. above-mentioned reality is taken to prepare anti-sliding nail core composition, then by with its volume mass than grinding for 500:1ml/kg
It is highly the YG8 sintered carbide ball of 16mm, by the revolving speed of ball mill that ball mill, which is added, using outer diameter 5mm in 95% ethyl alcohol of grinding media
It is set as 34r/min, adjustment mill ball carries out ball milling with the weight ratio for preparing anti-sliding nail core composition being added for 12: 1
45h, the wax moulding agent that it is 35:1g/kg with the mass ratio of mixture that two hours before discharging, which are added, to point discharging, gained slurry
It is filtered with 400 meshes, it is 100 DEG C in temperature that the mixed slurry after taking filtration, which is put into vacuum oven and is dried, vacuum
Degree be 100Pa under conditions of be dried, mixture it is spare；
S2. mixture obtained by S1 is placed in granulator, is pelletized, gained stuff and other stuff is packed into mold, pine dress
Density is 3.0g/cm3, then in the case where pressure is the pressure of 2500MPa, it is pressed into anti-sliding nail core blank；
S3. anti-sliding nail core blank obtained by S2 is packed into graphite boat, is put into vacuum drying oven and is sintered, sintering successively includes
Remove forming agent, pre-burning and vacuum-sintering three phases；The removing forming agent stage is by cermet anti-sliding nail core blank
It is that 100Pa keeps the temperature 6.0h under conditions of temperature is 450 DEG C in vacuum degree；The pre-burning stage is by cermet anti-sliding nail core
Blank is that 100Pa keeps the temperature 1.0h under conditions of temperature is 1250 DEG C in vacuum degree；The vacuum-sintering stage is that metal is made pottery
Porcelain anti-sliding nail core blank is 3.0Pa in vacuum degree, and under conditions of temperature is 1480 DEG C, heat preservation 1.5h obtains anti-sliding nail core；Then, right
Anti-sliding nail core carries out flexural strength, hardness, wearing coefficient and density and is measured, and test result is as shown in table 2.
Influence of 2 sintering process of table to anti-sliding nail core performance
| Bending strength | Vickers hardness | Wearing coefficient | Density | |
| Embodiment 10 | 1700 | 1550 | 67 | 6.8 |
| Embodiment 11 | 1680 | 1500 | 65 | 7.0 |
| Embodiment 12 | 1690 | 1520 | 70 | 6.9 |
Claims (10)
1. a kind of prepare anti-sliding nail core composition, which is characterized in that the composition is by following components in percentage by weight group
At:
Cobalt 8%~15%；
Nickel 8%~15%；
Tungsten carbide 35%~50%；
Molybdenum carbide 8%~20%；
Surplus is titanium carbonitride；
The granularity of the cobalt and nickel is 1.0~2.0 μm, and the granularity of tungsten carbide is 2.0~6.0 μm, and the granularity of titanium carbonitride is 2.0
~6.0 μm, the granularity of molybdenum carbide is 1.0~2.0 μm.
2. preparing anti-sliding nail core composition according to claim 1, which is characterized in that the composition is by following weight hundred
The group of ratio is divided to be grouped as:
Cobalt 8%~10%；
Nickel 8%~15%；
Tungsten carbide 35%~50%；
Molybdenum carbide 8%~20%；
Surplus is titanium carbonitride；
The granularity of the cobalt and nickel is 1.0~2.0 μm, and the granularity of tungsten carbide is 3.0~5.0 μm, and the granularity of titanium carbonitride is 3.0
~5.0 μm, the granularity of molybdenum carbide is 1.0~2.0 μm.
3. preparing anti-sliding nail core composition according to claim 2, which is characterized in that the composition is by following weight hundred
The group of ratio is divided to be grouped as:
Cobalt 8%~10%；
Nickel 8%~10%；
Tungsten carbide 35%~50%；
Molybdenum carbide 8%~20%；
Surplus is titanium carbonitride.
4. preparing anti-sliding nail core composition according to claim 3, which is characterized in that the composition is by following weight hundred
The group of ratio is divided to be grouped as:
Cobalt 8%~10%；
Nickel 8%~10%；
Tungsten carbide 35%~45%；
Molybdenum carbide 8%~20%；
Surplus is titanium carbonitride.
5. preparing anti-sliding nail core composition according to claim 4, which is characterized in that the composition is by following weight hundred
The group of ratio is divided to be grouped as:
Cobalt 8%~10%；
Nickel 8%~10%；
Tungsten carbide 35%~45%；
Molybdenum carbide 8%~10%；
Surplus is titanium carbonitride.
6. preparing anti-sliding nail core composition according to claim 4, which is characterized in that the composition is by following weight hundred
The group of ratio is divided to be grouped as:
Cobalt 10%；
Nickel 10%；
Tungsten carbide 45%；
Molybdenum carbide 8%；
Surplus is titanium carbonitride.
7. the method that anti-sliding nail core prepares anti-sliding nail core with composition is prepared described in application claim 1~6 any one, it is special
Sign is that the preparation method comprises the following steps:
Step S1. takes anti-sliding nail core composition, and abrasive media is added, is ground, forming agent is added before discharging, then arrived a little
Slurry filtration is taken filtered mixed slurry to be put into vacuum oven and is dried by discharging, gained mixture；
Step S2. takes mixture obtained by appropriate S1 to be placed in granulator, then pelletizes, and the stuff and other stuff that granulation is obtained fills
It inserts in mold, is pressed into anti-sliding nail core blank；
Step S3. sinter molding: anti-sliding nail core blank obtained by S2 is packed into graphite boat, is put into vacuum drying oven and is sintered, obtain
The anti-sliding nail core.
8. preparing the method for anti-sliding nail core according to claim 7, which is characterized in that abrasive media described in step S1 is concentration
For 95% ethyl alcohol, the volume mass ratio of the additional amount of the ethyl alcohol and the amount for preparing anti-sliding nail core composition is 400~
600:1ml/kg；Milling time described in step S1 is 36h~48h；The lap tool used that grinds is ball mill；The ball mill
Revolving speed be 34~40r/min, the mill ball be 5~10.5mm of outer diameter, be highly the YG8 sintered carbide ball of 14~18mm,
The mill ball and the weight ratio for preparing anti-sliding nail core composition being added are 6~12: 1；Forming agent described in step S1 adds
The mass ratio for entering amount and mixture is 35~50:1g/kg.
9. preparing the method for anti-sliding nail core according to claim 7, which is characterized in that step S2 suppresses anti-sliding nail core blank
Pressure is 300~2500MPa.
10. preparing anti-sliding nail core method according to claim 7, which is characterized in that it successively includes de- for being sintered described in step S3
Except forming agent, pre-burning and vacuum-sintering three phases；The removing forming agent stage is to be in vacuum degree by anti-sliding nail core blank
15~100Pa, under conditions of temperature is 150 DEG C~450 DEG C, 3.0~6.0h of soaking time；The pre-burning stage is by anti-skid stud
Core blank is 15~100Pa in vacuum degree, under conditions of temperature is 450 DEG C~800 DEG C, 0.5~1.0h of soaking time；It is described true
It in vacuum degree is 0.1~5.0Pa that empty sintering stage, which is by anti-sliding nail core blank, under conditions of temperature is 800 DEG C~1480 DEG C, is protected
Warm 1.0~1.5h of time.
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Effective date of registration: 20201228 Address after: No.88, tomorrow Road, Liyu Industrial Park, Tianyuan District, Zhuzhou City, Hunan Province, 412000 Patentee after: ZHUZHOU MINGRI CEMENTED CARBIDE Co.,Ltd. Address before: 412101 Miaoling formation, banzhuyuan village, Xianjing Township, Zhuzhou County, Zhuzhou City, Hunan Province Patentee before: Yang Xinyue |
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