CN106216673A - A kind of method of sintering cemented carbide molding guide wheel based on plasma discharging - Google Patents
A kind of method of sintering cemented carbide molding guide wheel based on plasma discharging Download PDFInfo
- Publication number
- CN106216673A CN106216673A CN201610701954.4A CN201610701954A CN106216673A CN 106216673 A CN106216673 A CN 106216673A CN 201610701954 A CN201610701954 A CN 201610701954A CN 106216673 A CN106216673 A CN 106216673A
- Authority
- CN
- China
- Prior art keywords
- powder
- guide wheel
- sintering
- ball
- grain
- 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.)
- Pending
Links
- 238000005245 sintering Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000007599 discharging Methods 0.000 title claims abstract description 13
- 238000000465 moulding Methods 0.000 title claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 81
- 239000003112 inhibitor Substances 0.000 claims abstract description 13
- 239000000919 ceramic Substances 0.000 claims abstract description 11
- 238000001238 wet grinding Methods 0.000 claims abstract description 6
- 238000000498 ball milling Methods 0.000 claims description 17
- 238000002360 preparation method Methods 0.000 claims description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 10
- 229910052739 hydrogen Inorganic materials 0.000 claims description 10
- 239000001257 hydrogen Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 238000003763 carbonization Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 5
- 230000009467 reduction Effects 0.000 claims description 5
- 230000006641 stabilisation Effects 0.000 claims description 5
- 238000011105 stabilization Methods 0.000 claims description 5
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 4
- 238000003701 mechanical milling Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 14
- 239000008187 granular material Substances 0.000 abstract description 8
- 238000010438 heat treatment Methods 0.000 abstract description 8
- 239000013078 crystal Substances 0.000 abstract description 7
- 230000014759 maintenance of location Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000002245 particle Substances 0.000 abstract description 5
- 230000007423 decrease Effects 0.000 abstract description 4
- 238000009792 diffusion process Methods 0.000 abstract description 4
- 230000035485 pulse pressure Effects 0.000 abstract description 4
- 230000002269 spontaneous effect Effects 0.000 abstract description 4
- 230000001052 transient effect Effects 0.000 abstract description 3
- 238000000280 densification Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000002490 spark plasma sintering Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 241000628997 Flos Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
- C22C29/08—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
-
- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/042—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling using a particular milling fluid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Powder Metallurgy (AREA)
Abstract
A kind of method that the invention discloses sintering cemented carbide molding guide wheel based on plasma discharging.Including step one, dispensing: the WC powder of 60% 75%, 5% 7.5%Co powder and 0.8% 0.85% grain inhibitors, surplus is ceramic powders；Step 2, wet grinding；Step 3, sieves and is dried；Step 4, discharge plasma sintering.The discharge plasma sintering process that the present invention uses is prepared guide wheel, crystal grain is uniform, density is high, mechanical property is good, Guiding wheel structure is i.e. can be made within the time of a few minutes, it is to utilize pulse energy, discharge pulse pressure and joule thermogenetic TRANSIENT HIGH TEMPERATURE field realize sintering process, the internal each granule of sintered body is made to produce uniform spontaneous heating and make particle surface activate by the plasma discharging of instantaneous generation, owing to heating up, rate of temperature fall is fast, temperature retention time is short, sintering process is made to fast skip the diffusion into the surface stage, decrease the growth of granule, also shorten manufacturing cycle simultaneously, save the energy.
Description
Technical field
The invention belongs to guide wheel technical field, particularly relate to a kind of sintering cemented carbide molding based on plasma discharging
The method of guide wheel.
Background technology
Guide wheel is the important spare part that consumption is bigger in hot rolled rod production line, is the crucial portion in steel rolling guide assembly
Part, the shadow land measure equal to fifteen mu in most parts of the Northeast the technical-economic indexes such as operating rate of rolling mill.The a lot of guide and guard part heat resistances used are not enough, occur that steel bonding etc. shows
As, also have some process conditions wearabilities, thermal fatigue property bad, have impact on service life and mill bar quality.
The physical essence of hardness abrasion is the fracture process of a kind of specific form, occurs at the top layer of wear-out part and Ya Biao
Layer.When considering hardness number, it is impossible to simply think that hardness more high-wearing feature is the best, its under various regimes hard to be taken into full account
Degree.Such as: the hardness changed due to Surface hardened layer or softening in work process；Surface is made owing to contacting with high temperature rolled piece
Temperature raises, and will consider temperature hardness.
Toughness rolls the fracture of guide wheel and is generally brittle fracture.For preventing the generation of brittle failure, resisting of material to be improved constantly
Fracture energy.
Discharge plasma sintering (Spark Plasma Sintering is called for short SPS) is a kind of Fast Sintering new technology, it
Between powder particle, it is passed directly into pulse current carries out heat-agglomerating, be to utilize pulse energy, discharge pulse pressure and joule delivery in hot weather
Raw TRANSIENT HIGH TEMPERATURE field realizes sintering process, makes the internal each granule of sintered body produce by the plasma discharging of instantaneous generation
Uniform spontaneous heating also makes particle surface activate, and owing to heating, cooling speed is fast, temperature retention time is short, makes sintering process quickly jump
Spend the diffusion into the surface stage, decrease the growth of granule, also shorten manufacturing cycle simultaneously, saved the energy.
Summary of the invention
A kind of method that it is an object of the invention to provide sintering cemented carbide molding guide wheel based on plasma discharging, logical
Crossing the HIP sintering technique used and be prepared guide wheel, powder is pressed and burns the part that silk floss becomes fine and close, reduces goods
Sintering temperature, improve the grainiess of goods, eliminate the intergranular defect of material internal and hole, improve material
Consistency and intensity.
For solving above-mentioned technical problem, the present invention is achieved by the following technical solutions:
The present invention is a kind of method of sintering cemented carbide molding guide wheel based on plasma discharging, comprises the steps:
Step one, the WC powder of dispensing: 60%-75%, 5%-7.5%Co powder and the suppression of 0.8%-0.85% crystal grain
Agent, surplus is ceramic powders；
The preparation of A ultra-fine WC powder: by C powder and WO3Powder is straight in being placed in the rotary furnace of nitrogen atmosphere in the ratio of atomic ratio 1:1
Continue reduction and carbonization in succession and prepare WC powder, reductase 12 4h-50h under hydrogen shield, the temperature stabilization of rotary furnace 1500 DEG C-
2000 DEG C, synthesize the WC powder body that grain size is 1.0-1.5 circle；
The preparation of B Co powder: Co powder is placed in ball mill, ball milling 30h-50h under hydrogen shield, form 0.2-0.3 μm
Co powder；
C grain inhibitor: include the Gr of VC and 25%-40% of 60%-75%5C3；
Step 2, wet grinding: the WC powder of dispensing 60%-75% that step one is prepared, 5%-7.5%Co powder and
0.8%-0.85% grain inhibitor, surplus is that ceramic powders joins in tank, with liquid ethanol as ball-milling medium, the ball of A and B
Material ratio is 10:1, adds titanium tetrachloride in mechanical milling process, and the rotating speed of ball mill is at 90-100r/min, and Ball-milling Time is at 130h-
160h；
Step 3, sieves and is dried: put in guide wheel mould by the powder of step 2 milled；
Step 4, discharge plasma sintering: guide wheel mould step 3 made is put in discharge plasma sintering stove is logical
After electricity, 3-5min i.e. makes guide wheel.
The method have the advantages that
The discharge plasma sintering process that the present invention uses is prepared guide wheel, and crystal grain is uniform, density is high, mechanical property
Good, within the time of a few minutes, i.e. can be made into Guiding wheel structure, be to utilize pulse energy, discharge pulse pressure and joule thermogenetic wink
Time high-temperature field realize sintering process, make the internal each granule of sintered body produce by the plasma discharging of instantaneous generation uniform
Spontaneous heating also makes particle surface activate, and owing to heating, cooling speed is fast, temperature retention time is short, makes sintering process fast skip surface
Diffusion phase, decreases the growth of granule, also shortens manufacturing cycle simultaneously, has saved the energy.
Certainly, the arbitrary product implementing the present invention it is not absolutely required to reach all the above advantage simultaneously.
Detailed description of the invention
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based in the present invention
Embodiment, all other embodiments that those of ordinary skill in the art are obtained under not making creative work premise, all
Belong to the scope of protection of the invention.
Embodiment one
Step one, dispensing: WC powder, 5%Co powder and 0.8% grain inhibitor of 60%, surplus is ceramic powders；
The preparation of A ultra-fine WC powder: by C powder and WO3Powder is straight in being placed in the rotary furnace of nitrogen atmosphere in the ratio of atomic ratio 1:1
Continue reduction and carbonization in succession and prepare WC powder, reductase 12 4h-50h under hydrogen shield, the temperature stabilization of rotary furnace 1500 DEG C-
2000 DEG C, synthesize the WC powder body that grain size is 1.0-1.5 circle；
The preparation of B Co powder: Co powder is placed in ball mill, ball milling 30h-50h under hydrogen shield, form 0.2-0.3 μm
Co powder；
C grain inhibitor: include the Gr of VC and 25%-40% of 60%-75%5C3；
Step 2, wet grinding: the WC powder of dispensing 60%, 5%Co powder and the suppression of 0.8% crystal grain that step one is prepared
Agent, surplus is that ceramic powders joins in tank, and with liquid ethanol as ball-milling medium, the ratio of grinding media to material of A and B is 10:1, mechanical milling process
Middle addition titanium tetrachloride, the rotating speed of ball mill is at 90-100r/min, and Ball-milling Time is at 130h-160h；
Step 3, sieves and is dried: put in guide wheel mould by the powder of step 2 milled；
Step 4, discharge plasma sintering: guide wheel mould step 3 made is put in discharge plasma sintering stove is logical
After electricity, 3-5min i.e. makes guide wheel.
Along with the increase of sintering temperature, WC-Co-ceramal sample time (10min) 1050 DEG C under certain temperature retention time
There is no densification, along with sintering temperature improves, the densification of sample increases sharply, and reaches 89.0% during to 1100 DEG C
Relative density, the most then there is no change.
Embodiment two
A kind of method of sintering cemented carbide molding guide wheel based on plasma discharging, following steps:
Step one, dispensing: WC powder, 6%Co powder and 0.85% grain inhibitor of 70%, surplus is ceramic powders；
The preparation of A ultra-fine WC powder: by C powder and WO3Powder is straight in being placed in the rotary furnace of nitrogen atmosphere in the ratio of atomic ratio 1:1
Continue reduction and carbonization in succession and prepare WC powder, reductase 12 4h-50h under hydrogen shield, the temperature stabilization of rotary furnace 1500 DEG C-
2000 DEG C, synthesize the WC powder body that grain size is 1.0-1.5 circle；
The preparation of B Co powder: Co powder is placed in ball mill, ball milling 30h-50h under hydrogen shield, form 0.2-0.3 μm
Co powder；
C grain inhibitor: include the Gr of VC and 25%-40% of 60%-75%5C3；
Step 2, wet grinding: the WC powder of dispensing 70%, 6%Co powder and 0.85% crystal grain that step one are prepared press down
Preparation, surplus is that ceramic powders joins in tank, and with liquid ethanol as ball-milling medium, the ratio of grinding media to material of A and B is 10:1, ball milling mistake
Adding titanium tetrachloride in journey, the rotating speed of ball mill is at 90-100r/min, and Ball-milling Time is at 130h-160h；
Step 3, sieves and is dried: put in guide wheel mould by the powder of step 2 milled；
Step 4, discharge plasma sintering: guide wheel mould step 3 made is put in discharge plasma sintering stove is logical
After electricity, 3-5min i.e. makes guide wheel.
Along with the increase of sintering temperature, WC-Co-carbon fiber powder alloy (10min) 1100 DEG C under certain temperature retention time
Time sample there is no densification, along with sintering temperature improve, the densification of sample increases sharply, and reaches during to 1150 DEG C
The relative density of 99.3%, the most then there is no change.
Embodiment three
A kind of method of sintering cemented carbide molding guide wheel based on plasma discharging, following steps:
Step one, dispensing: WC powder, 7.5%Co powder and 0.85% grain inhibitor of 75%, surplus is ceramics
End；
The preparation of A ultra-fine WC powder: by C powder and WO3Powder is straight in being placed in the rotary furnace of nitrogen atmosphere in the ratio of atomic ratio 1:1
Continue reduction and carbonization in succession and prepare WC powder, reductase 12 4h-50h under hydrogen shield, the temperature stabilization of rotary furnace 1500 DEG C-
2000 DEG C, synthesize the WC powder body that grain size is 1.0-1.5 circle；
The preparation of B Co powder: Co powder is placed in ball mill, ball milling 30h-50h under hydrogen shield, form 0.2-0.3 μm
Co powder；
C grain inhibitor: include the Gr of VC and 25%-40% of 60%-75%5C3；
Step 2, wet grinding: the WC powder of dispensing 75%, 7.5%Co powder and 0.85% crystal grain that step one is prepared
Inhibitor, surplus is that ceramic powders joins in tank, and with liquid ethanol as ball-milling medium, the ratio of grinding media to material of A and B is 10:1, ball milling
During add titanium tetrachloride, the rotating speed of ball mill is at 90-100r/min, and Ball-milling Time is at 130h-160h；
Step 3, sieves and is dried: put in guide wheel mould by the powder of step 2 milled；
Step 4, discharge plasma sintering: guide wheel mould step 3 made is put in discharge plasma sintering stove is logical
After electricity, 3-5min i.e. makes guide wheel.
Along with the increase of sintering temperature, WC-Co-carbon fiber powder alloy (10min) 1030 DEG C under certain temperature retention time
Time sample there is no densification, along with sintering temperature improve, the densification of sample increases sharply, and reaches during to 1300 DEG C
The relative density of 99.0%, the most then there is no change.
The discharge plasma sintering process used is prepared guide wheel, and crystal grain is uniform, density is high, mechanical property is good, several
Minute time in i.e. can be made into Guiding wheel structure, be to utilize pulse energy, discharge pulse pressure and the thermogenetic TRANSIENT HIGH TEMPERATURE of joule
Field realizes sintering process, makes the internal each granule of sintered body produce uniform spontaneous heating by the plasma discharging of instantaneous generation
And make particle surface activate, owing to heating, cooling speed is fast, temperature retention time is short, makes sintering process fast skip diffusion into the surface rank
Section, decreases the growth of granule, also shortens manufacturing cycle simultaneously, has saved the energy.
In the description of this specification, the description of reference term " embodiment ", " example ", " concrete example " etc. means
Specific features, structure, material or feature in conjunction with this embodiment or example description is contained at least one enforcement of the present invention
In example or example.In this manual, the schematic representation to above-mentioned term is not necessarily referring to identical embodiment or example.
And, the specific features of description, structure, material or feature can be to close in any one or more embodiments or example
Suitable mode combines.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.Preferred embodiment is the most detailed
Describe all of details, be also not intended to the detailed description of the invention that this invention is only described.Obviously, according to the content of this specification,
Can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is to preferably explain the present invention
Principle and actual application so that skilled artisan can be best understood by and utilize the present invention.The present invention is only
Limited by claims and four corner thereof and equivalent.
Claims (1)
1. the method for a sintering cemented carbide molding guide wheel based on plasma discharging, it is characterised in that comprise the steps:
Step one, the WC powder of dispensing: 60%-75%, 5%-7.5%Co powder and 0.8%-0.85% grain inhibitor, remaining
Amount is ceramic powders；
The preparation of A ultra-fine WC powder: by C powder and WO3Powder directly connects in being placed in the rotary furnace of nitrogen atmosphere in the ratio of atomic ratio 1:1
Continuous reduction and carbonization prepares WC powder, reductase 12 4h-50h under hydrogen shield, the temperature stabilization of rotary furnace at 1500 DEG C-2000 DEG C,
Synthesize the WC powder body that grain size is 1.0-1.5 circle；
The preparation of B Co powder: Co powder is placed in ball mill, ball milling 30h-50h under hydrogen shield, form the Co of 0.2-0.3 μm
Powder；
C grain inhibitor: include the Gr of VC and 25%-40% of 60%-75%5C3；
Step 2, wet grinding: the WC powder of dispensing 60%-75% that step one is prepared, 5%-7.5%Co powder and 0.8%-
0.85% grain inhibitor, surplus is that ceramic powders joins in tank, and with liquid ethanol as ball-milling medium, the ratio of grinding media to material of A and B is
10:1, adds titanium tetrachloride in mechanical milling process, the rotating speed of ball mill is at 90-100r/min, and Ball-milling Time is at 130h-160h；
Step 3, sieves and is dried: put in guide wheel mould by the powder of step 2 milled；
Step 4, discharge plasma sintering: guide wheel mould step 3 made is put in discharge plasma sintering stove, after energising
3-5min i.e. makes guide wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610701954.4A CN106216673A (en) | 2016-08-22 | 2016-08-22 | A kind of method of sintering cemented carbide molding guide wheel based on plasma discharging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610701954.4A CN106216673A (en) | 2016-08-22 | 2016-08-22 | A kind of method of sintering cemented carbide molding guide wheel based on plasma discharging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106216673A true CN106216673A (en) | 2016-12-14 |
Family
ID=57552965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610701954.4A Pending CN106216673A (en) | 2016-08-22 | 2016-08-22 | A kind of method of sintering cemented carbide molding guide wheel based on plasma discharging |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106216673A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001329331A (en) * | 2000-05-19 | 2001-11-27 | Hitachi Tool Engineering Ltd | High hardness and high toughness cemented carbide and its production method |
| CN103635599A (en) * | 2011-06-27 | 2014-03-12 | 京瓷株式会社 | Hard alloy and cutting tool |
| CN103627942A (en) * | 2013-03-20 | 2014-03-12 | 厦门钨业股份有限公司 | Preparation method for high-performance WC-Co nanocrystal cemented carbide |
| CN105264103A (en) * | 2013-05-31 | 2016-01-20 | 山特维克知识产权股份有限公司 | New process of manufacturing cemented carbide and a product obtained thereof |
-
2016
- 2016-08-22 CN CN201610701954.4A patent/CN106216673A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001329331A (en) * | 2000-05-19 | 2001-11-27 | Hitachi Tool Engineering Ltd | High hardness and high toughness cemented carbide and its production method |
| CN103635599A (en) * | 2011-06-27 | 2014-03-12 | 京瓷株式会社 | Hard alloy and cutting tool |
| CN103627942A (en) * | 2013-03-20 | 2014-03-12 | 厦门钨业股份有限公司 | Preparation method for high-performance WC-Co nanocrystal cemented carbide |
| CN105264103A (en) * | 2013-05-31 | 2016-01-20 | 山特维克知识产权股份有限公司 | New process of manufacturing cemented carbide and a product obtained thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102628138B (en) | Trace cobalt-containing tungsten carbide without bonding phase and preparation method thereof | |
| CN106191608B (en) | A kind of hard alloy in low cobalt of high temperature resistant, wear resistant corrosion resistant and preparation method thereof | |
| CN101748365A (en) | Tungsten titanium target material with high purity and high tungsten-rich phase, and preparation method thereof | |
| CN103817150B (en) | Gradient-structure hard alloy roll collar and manufacturing process thereof | |
| CN102071346A (en) | Method for preparing compact nanocrystalline WC-Co hard alloy block material with small grain size | |
| CN105272260B (en) | A kind of soap-free emulsion polymeization phase tungsten carbide composite and preparation method thereof | |
| CN112828298B (en) | Preparation method of high-temperature molybdenum alloy spherical powder | |
| CN103073940B (en) | Preparation method of salt-spray-corrosion-resistant hard-surface coating material for thermal spraying | |
| CN106077656A (en) | A kind of prepare the Novel powder metallurgy method with nanometer or hyperfine structure titanium article | |
| CN106116582B (en) | A kind of sintering method without cobalt tungsten carbide | |
| CN110453128B (en) | Macroscopic gradient hard alloy conical column tooth and preparation method thereof | |
| WO2012013058A1 (en) | Remelting type thread element for parallel dual-screw extruder and manufacturing method thereof | |
| CN103526078A (en) | Micro-nano oxide particle reinforced high abrasion resistance cobalt-based alloy powder and preparation method thereof | |
| CN111304479A (en) | Preparation method of VCrNbMoW refractory high-entropy alloy | |
| CN112195389A (en) | 3D prints ternary boride Mo2FeB2Alloy powder and production process thereof | |
| CN104630589B (en) | A kind of composite hard alloy material of tungsten carbide cladding and preparation method thereof | |
| CN102912340A (en) | Preparation method for high temperature impact wear resistant gradient composite material | |
| CN108149183A (en) | A kind of hard alloy of surface hardness gradient distribution and preparation method thereof | |
| CN106676520B (en) | A kind of laser cladding of material and its application for Copper substrate surface | |
| CN104388796B (en) | A kind of cold upsetting die of car hard alloy and preparation method thereof | |
| CN109913868B (en) | Hole array steel surface composite coating and preparation method thereof | |
| CN106222511A (en) | A kind of method of sintering cemented carbide molding guide wheel based on high-energy ball milling method | |
| CN106077668A (en) | A kind of method of sintering cemented carbide molding guide wheel based on high temperature insostatic pressing (HIP) | |
| CN103409747A (en) | Method for preparing Ni-based WC hard alloy coating and inhibiting cracks and air holes therein | |
| US20110195834A1 (en) | Wear Resistant Two-Phase Binderless Tungsten Carbide and Method of Making Same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161214 |
|
| RJ01 | Rejection of invention patent application after publication |