CN105154747B - Composite tungsten carbide hard alloy bar and preparation methods thereof - Google Patents
Composite tungsten carbide hard alloy bar and preparation methods thereof Download PDFInfo
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Abstract
The invention provides a composite tungsten carbide hard alloy bar. The composite tungsten carbide hard alloy bar is particularly made of Ir-WC-NdFeCo or Nb-WC-NdFeCo, and can also be made of Ir-TiC-NdFeCo or Nb-TiC-NdFeCo generated thereby. The composite tungsten carbide hard alloy is prepared from WC or TiC powder, Co powder, Nb or Ir powder and Nd2Fe14B powder. The invention also discloses four preparation methods of the composite tungsten carbide hard alloy bar, namely a ball milling method, an extrusion molding method, a cold isostatic pressing method and a compression molding method. By the adoption of the four preparation methods, the obtained composite tungsten carbide hard alloy is high in hardness, fracture toughness and compressive strength, and the composite tungsten carbide hard alloy bar belongs to novel hard alloy bars and can realize industrial production.
Description
Technical field
The present invention relates to a kind of compound carbonizing tungsten hard alloy bar and preparation method thereof, while the tungsten carbide hard is closed
Gold further relates to titanizing tungsten, belongs to NEW TYPE OF COMPOSITE metal alloy and its preparation field.
Background technology
Hard alloy be based on refractory carbide (WC and TiC etc.), iron group metal (Co, Fe and Ni)
As cohering phase, a kind of sandwich manufactured with powder metallurgy process, because having high strength and high hardness and good resistance to
Mill property, at the aspect such as metal cutting, metal forming tool, mine excavation, oil drilling, defence and military and stone material, timber cutting
It is applied widely, is called " tooth of modern industry ", wherein is ground as the WC-Co series hard metals for cohering phase using cobalt
Study carefully and be most widely used.Ultra-fine crystal WC-Co alloy is extensively used because of the double high feature with high intensity with high-fracture toughness
Make precision cutting tool material.The preparation of ultra-fine crystal WC-Co alloy is generally using the preparation of ultra-fine or nanoscale WC powder sinterings
Into.But during Traditional liquid phase pressureless sintering, ultra-fine or nanocrystalline WC granules are easy to abnormal growth phenomenon.How
Growing up into for WC of control prepares one of key technology of ultra-fine cemented carbide.With industry continuous development, cobalt should
With more and more extensively, and cobalt resource is also constantly reduced, and so as to improve the production cost of carbonization base cemented carbide, limits cobalt
Further apply.Further to improve the combination properties such as the fracture toughness of tungsten carbide base carbide alloy, find nontoxic and can meet
The new of requirement coheres phase, becomes one of important research contents.In past more than 20 years, domestic and international many researcheres
Carry out and can study as the binding material of Co substitutes, wherein study more having：Ni, Fe, Ni-Fe, Ni-Co, Ni-
Cr, Ni-Cr-Mo-Al and Fe-Co etc..But commercial Application shows：Using these materials as the synthesis of the hard alloy for cohering phase
Combination property of the performance less than WC-Co systems alloy, it is difficult to adapt to the complicated harsh environments such as acidity, high temperature oxidation stability, limit
Its extensive application in hard carbide industry is made.Compare with cobalt, between metal, (abbreviation MxAl, M represent metal to aluminium compound
Element, such as Ni, Fe and Ti etc., similarly hereinafter) compacted because resisting with high-melting-point, high rigidity, excellent corrosion protection energy and high temperature resistant
The advantages of change, it is expected to improve the shortcoming of WC-Co series hard metals.Research shows：Ni3Al has certain wettability to WC.Rope
Enter equality [9] during using the welding NiAl of the Ni3Al welding rods containing WC, it has been found that Ni3Al has good to WC
Good wettability.Ahmadian etc. is prepared for pre-alloyed Ni3Al-B powder using electric arc melting and air pressure comminuting method, then
It is 0.8 μm of WC powder ball milling mixing again with granularity and is sintered by Vacuum Heat pressed compact, obtains the WC that Ni3Al coheres
Base cemented carbide, but the fracture behaviour to interfacial reaction and alloy between WC/Ni3Al do not had with high-temperature oxidation resistance
Studied.The little strong grade of Lee is prepared for WC-10Ni3Al (mass fraction, similarly hereinafter) hard alloy using plasma agglomeration method, but
In alloy, WC crystal grain is mainly micron order lath-shaped.And hard war of dragon etc. adopt nikel powder, aluminium powder and tungsten carbide powder (granularity for 15 ~
20 μm) for raw material, Ni3Al-WC composite powders are obtained by presintering, then composite powder after deoxidation treatment, it is compressing
And low pressure sintering obtains the crude crystal WC base cemented carbides that cohere of Ni3Al, but the technique to there is technological process length, technique multiple
Miscellaneous the problems such as, prepared WC crystallite dimensions, are thick, skewness, while also containing part NiAl phases in alloy, make
The mechanical property for obtaining material is relatively low, and preparation condition has high demands.
The content of the invention
It is an object of the invention to provide a kind of compound carbonizing tungsten hard alloy bar, including the raw material group of following weight portion
Into：WC powder 80-90 parts, Co powder 0.3-0.8 parts, Nb or Ir powder 0.001-0.1 parts and Nd2Fe14B powder 0.5-12.5
Part.
More preferably WC powder 85-90 parts, Co powder 0.5-0.7 parts, Nb or Ir powder 0.001-0.01 parts and
Nd2Fe14B powder 3.5-7.5 parts.
Still more preferably it is the raw material composition for including following weight portion：86.7 parts of WC powder, 0.49 part of Co powder, Nb or
0.0024 part and Nd of Ir powder2Fe1410.5 parts of B powder.
The grain size of described WC powder is 100-180nm, and Co powder crosses 0.1-0.5 μm, and Nb powder is 0.5-10 μm, Ir
Powder is 0.5-10 μm, Nd2Fe140.5-10 μm of B powder.
More preferably the grain size of WC powder is 150nm, and Co powder crosses 0.2 μm, and Nb powder is 2 μm, and Ir powder is
2.8 μm, Nd2Fe144.5 μm of B powder.
Polypropylene glycol ether of the above-mentioned alloy bar material raw material also including 5-15 parts, polyether ester or fatty acid ester.
In above-mentioned composite, WC powder may be replaced by TiC powder, and TiC powder crystals granularity is 200nm.Other metal materials
Addition and addition refer to WC powder, but most preferably scheme is 88.3 parts of TiC powder, 0.6 part of Co powder, Nb powder 0.0036
0.0018 part and Nd of part or Ir powder2Fe1411 parts of B powder.
The preparation method of the compound carbonizing tungsten hard alloy bar in above-mentioned, comprises the steps：By WC powder, Co powder
End, Nb powder or Ir powder, Nd2Fe14After B powder is mixed in proportion, the ball milling on planetary ball mill is provided with ball mill
Polypropylene glycol ether, polyether ester or fatty acid ester, spray-drying process after ball milling 30-40h, obtain Ir-WC-NdFeCo composite powders or
Nb-WC-NdFeCo composite powders, by under the composite powder argon protection, in 50-100pa, 50- is calcined in insulation at 1000 DEG C -1600 DEG C
80min, obtains compound carbonizing tungsten hard alloy bar after stove is cooled to room temperature.
The preparation method of the compound carbonizing tungsten hard alloy bar in above-mentioned, can also comprise the steps：By WC powder,
Co powder, Nb powder or Ir powder, Nd2Fe14After B powder is mixed in proportion, the ball milling on planetary ball mill is set in ball mill
Polypropylene glycol ether, polyether ester or fatty acid ester are equipped with, spray-drying process after ball milling 30-40h obtains Ir-WC-NdFeCo and is combined
Powder or Nb-WC-NdFeCo composite powders, the composite powder is compressing under 100MPa, Jing after hydrogen defat under argon protection,
50-100pa, insulation calcining 50-80min at 1000 DEG C -1600 DEG C, obtains the conjunction of compound carbonizing tungsten hard after stove is cooled to room temperature
Golden bar.
The preparation method of the compound carbonizing tungsten hard alloy bar in above-mentioned, can also comprise the steps：By WC powder,
Co powder, Nb powder or Ir powder, Nd2Fe14After B powder is mixed in proportion, the ball milling on planetary ball mill is set in ball mill
Polypropylene glycol ether, polyether ester or fatty acid ester are equipped with, spray-drying process after ball milling 30-40h obtains Ir-WC-NdFeCo and is combined
Powder or Nb-WC-NdFeCo composite powders, by the composite powder in 400MPa, compressing at 400 DEG C, Jing after hydrogen defat, argon is protected
Under shield, in 5-10pa, at 1000 DEG C -1600 DEG C, insulation calcining 50-80min, obtains compound carbonizing tungsten after stove is cooled to room temperature
Hard alloy bar.
The preparation method of the compound carbonizing tungsten hard alloy bar in above-mentioned, can also comprise the steps：By WC powder,
Co powder, Nb powder or Ir powder, Nd2Fe14After B powder is mixed in proportion, the ball milling on planetary ball mill is set in ball mill
Polypropylene glycol ether, polyether ester or fatty acid ester are equipped with, spray-drying process after ball milling 30-40h obtains Ir-WC-NdFeCo and is combined
Powder or Nb-WC-NdFeCo composite powders, by composite powder compression molding under 450MPa, then are incubated at 1500 DEG C -1800 DEG C and forge
50-80min is burnt, compound carbonizing tungsten hard alloy bar is obtained after stove is cooled to room temperature.
Had the following technical effect that using technical scheme：
1. the invention provides a kind of NEW TYPE OF COMPOSITE Talide bar, Ir-WC-NdFeCo composite hard alloys
Bar or Nb-WC-NdFeCo composite hard alloy bars, while the Talide is prolonged raw to titanium carbide, obtain Ir-
TiC-NdFeCo composite powders or Nb-TiC-NdFeCo composite powders, and the composite powder is adopted into compound carbonizing tungsten hard alloy bar
Preparation method obtain corresponding Ir-TiC-NdFeCo composite hard alloys bar or Nb-TiC-NdFeCo composite hard alloys
Bar.
2. suitable various preparation methoies of the NEW TYPE OF COMPOSITE Talide bar of the present invention, and, preparation method letter
Single, condition is more gentle, and the Cemented Carbide Properties for obtaining are excellent, and concrete manifestation is in the examples below.
3., in preparation process, Ball-milling Time is short for the NEW TYPE OF COMPOSITE Talide bar of the present invention.
Specific embodiment
Embodiment 1
A kind of preparation method of compound carbonizing tungsten hard alloy bar, comprises the steps：By WC powder, Co powder, Nb
Powder or Ir powder, Nd2Fe14After B powder is mixed in proportion（In raw material, WC powder 86.7g, Co powder 0.49g, Nb0.0024g
Or Ir powder 0.0024g, Nd2Fe14B powder 10.5g）, the ball milling on planetary ball mill is provided with polypropylene glycol in ball mill
Ether, polyether ester or fatty acid ester, spray-drying process after ball milling 33h obtain Ir-WC-NdFeCo composite powders or Nb-WC-
NdFeCo composite powders, by under the composite powder argon protection, in 55pa, at 1400 DEG C, insulation calcining 70min, treats that stove is cooled to room temperature
After obtain compound carbonizing tungsten hard alloy bar.
Embodiment 2
A kind of preparation method of compound carbonizing tungsten hard alloy bar, comprises the steps：By WC powder, Co powder, Nb
Powder or Ir powder, Nd2Fe14After B powder is mixed in proportion（In raw material, WC powder 85g, Co powder 0.58g, Nb0.0018g or
Ir powder 0.01g, Nd2Fe14B powder 6.55g）, the ball milling on planetary ball mill, be provided with ball mill polypropylene glycol ether,
Polyether ester or fatty acid ester, spray-drying process after ball milling 40h, obtains Ir-WC-NdFeCo composite powders or Nb-WC-NdFeCo is multiple
Powder is closed, the composite powder is compressing under 100MPa, Jing after hydrogen defat under argon protection, in 80pa, it is incubated at 1200 DEG C
Calcining 80min, obtains compound carbonizing tungsten hard alloy bar after stove is cooled to room temperature.
Embodiment 3
A kind of preparation method of compound carbonizing tungsten hard alloy bar, comprises the steps：By WC powder, Co powder,
Nb powder or Ir powder, Nd2Fe14After B powder is mixed in proportion（In raw material, WC powder 90g, Co powder 0.68g, Nb0.01g or
Ir powder 0.0037g, Nd2Fe14B powder 6.28g）, the ball milling on planetary ball mill is provided with polypropylene glycol in ball mill
Ether, polyether ester or fatty acid ester, spray-drying process after ball milling 34h obtain Ir-WC-NdFeCo composite powders or Nb-WC-
NdFeCo composite powders, it is by the composite powder in 400MPa, compressing at 400 DEG C, Jing after hydrogen defat under argon protection, in 8pa,
At 1400 DEG C, insulation calcining 80min, obtains compound carbonizing tungsten hard alloy bar after stove is cooled to room temperature.
Embodiment 4
A kind of preparation method of compound carbonizing tungsten hard alloy bar, comprises the steps：By WC powder, Co powder, Nb
Powder or Ir powder, Nd2Fe14After B powder is mixed in proportion（In raw material, WC powder 90g, Co powder 0.72g, Nb0.0047g or
Ir powder 0.0034g, Nd2Fe14B powder 12g）, the ball milling on planetary ball mill, be provided with ball mill polypropylene glycol ether,
Polyether ester or fatty acid ester, spray-drying process after ball milling 30h, obtains Ir-WC-NdFeCo composite powders or Nb-WC-NdFeCo is multiple
Powder is closed, by composite powder compression molding under 450MPa, then the insulation calcining 50min at 1500 DEG C, after stove is cooled to room temperature
Obtain compound carbonizing tungsten hard alloy bar.
Embodiment 5
A kind of preparation method of compound carbonizing titanium hard alloy bar, comprises the steps：By TiC powder, Co powder, Nb
Powder or Ir powder, Nd2Fe14After B powder is mixed in proportion（In raw material, TiC powder 88.3g, Co powder 0.6g, Nb powder
0.0036g or Ir powder 0.0018g, Nd2Fe14B powder 11g）, the ball milling on planetary ball mill is provided with ball mill poly-
Propylene glycol, polyether ester or fatty acid ester, spray-drying process after ball milling 30-40h, obtain Ir-WC-NdFeCo composite powders or
Nb-WC-NdFeCo composite powders, by under the composite powder argon protection, in 50-100pa, 50- is calcined in insulation at 1000 DEG C -1600 DEG C
80min, obtains compound carbonizing tungsten hard alloy bar after stove is cooled to room temperature.
Embodiment 6
A kind of preparation method of compound carbonizing titanium hard alloy bar, comprises the steps：By TiC powder, Co powder, Nb
Powder or Ir powder, Nd2Fe14After B powder is mixed in proportion（In raw material, TiC powder 86.5g, Co powder 0.62g,
Nb0.0015g or Ir powder 0.0021g, and Nd2Fe14B powder 4.4g）, the ball milling on planetary ball mill set in ball mill
Polypropylene glycol ether, polyether ester or fatty acid ester are equipped with, spray-drying process after ball milling 30-40h obtains Ir-WC-NdFeCo and is combined
Powder or Nb-WC-NdFeCo composite powders, the composite powder is compressing under 100MPa, Jing after hydrogen defat under argon protection,
50-100pa, insulation calcining 50-80min at 1000 DEG C -1600 DEG C, obtains the conjunction of compound carbonizing tungsten hard after stove is cooled to room temperature
Golden bar.
Embodiment 7
A kind of preparation method of compound carbonizing titanium hard alloy bar, comprises the steps：By TiC powder, Co powder, Nb
Powder or Ir powder, Nd2Fe14After B powder is mixed in proportion（In raw material, TiC powder 88.2g, Co powder 0.65g,
Nb0.0018g or Ir powder 0.0036g, Nd2Fe14B powder 7.5g）, the ball milling on planetary ball mill is provided with ball mill
Polypropylene glycol ether, polyether ester or fatty acid ester, spray-drying process after ball milling 30-40h, obtain Ir-WC-NdFeCo composite powders or
Nb-WC-NdFeCo composite powders, it is by the composite powder in 400MPa, compressing at 400 DEG C, Jing after hydrogen defat under argon protection,
In 5-10pa, insulation calcining 50-80min at 1000 DEG C -1600 DEG C obtains the conjunction of compound carbonizing tungsten hard after stove is cooled to room temperature
Golden bar.
Embodiment 8
A kind of preparation method of compound carbonizing titanium hard alloy bar, comprises the steps：By TiC powder, Co powder, Nb
Powder or Ir powder, Nd2Fe14After B powder is mixed in proportion（In raw material, TiC powder 90g, Co powder 0.38g, Nb0.0026g
Or Ir powder 0.01g, Nd2Fe14B powder 12.5g）, the ball milling on planetary ball mill is provided with polypropylene glycol in ball mill
Ether, polyether ester or fatty acid ester, spray-drying process after ball milling 30-40h obtain Ir-WC-NdFeCo composite powders or Nb-WC-
NdFeCo composite powders, by composite powder compression molding under 450MPa, then the insulation calcining 50- at 1500 DEG C -1800 DEG C
80min, obtains compound carbonizing tungsten hard alloy bar after stove is cooled to room temperature.
The sample mechanical property of embodiment 1-8 following (wherein, A represents that Ir-R is serial, and it is serial that B represents Nb-R)：
| Sample | Hardness（HRA） | Fracture toughness（MPa·m1/2） | Comprcssive strength (MPa) |
| 1-A | 90.3 | 16.8 | 4000 |
| 1-B | 88.7 | 16.4 | 3950 |
| 2-A | 88.9 | 15.6 | 3740 |
| 2-B | 88.1 | 15.8 | 3820 |
| 3-A | 87.4 | 14.7 | 3300 |
| 3-B | 87.0 | 15.2 | 2890 |
| 4-A | 88.5 | 13.8 | 1950 |
| 4-B | 88.5 | 14.0 | 2160 |
| 5-A | 89.9 | 16.1 | 3400 |
| 5-B | 90.7 | 16.5 | 3750 |
| 6-A | 89.1 | 16.2 | 2640 |
| 6-B | 89.4 | 15.4 | 2980 |
| 7-A | 88.6 | 14.8 | 2450 |
| 7-B | 86.5 | 15.1 | 1890 |
| 8-A | 87.9 | 15 | 3405 |
| 8-B | 88.4 | 13.9 | 3780 |
Obtain Ir-WC-NdFeCo composite powders or Nb-WC-NdFeCo composite powders
Toughness data in upper table shows：Nd2Fe14The appropriate addition of B and the doping of Nb or Ir can improve WC-Co
Or the fracture toughness of TiC-Co alloys.Rare earth Nd can purify crystal boundary and phase boundary, improve the wettability at WC-Co interfaces, thus
The intensity of crystal boundary and boundary is improve, the fracture toughness of carbide alloy of rare earth is just greatly improved.Meanwhile, research shows dilute
The appropriate addition of earth elements can substantially between fining metal compound tissue and crystallite dimension, effectively improve alloy room temperature modeling
Property, so as to improve the toughness of Ir-WC-NdFeCo or Nb-WC-NdFeCo hard alloys.Ir-WC-NdFeCo or Nb-WC-
After NdFeCo alloys add B, in addition to the gap solution strengthening effect of B atoms in crystal formation, the intercrystalline strengthening of also B is made
With.
B atoms often segregation on crystal boundary, this segregation belongs to gun for balance, it reduce crystal boundary energy, increase crystal boundary combine
Power, so as to increase the ability that crystal boundary resists crackle.As B atoms segregation is in crystal boundary, increases the mobility of grain boundary dislocation, promote
The generation of grain boundary dislocation, is formed about skid wire steering, double glide or commutative Banach aglebra in crystal boundary, makes sliding easily propagate through crystal boundary face
Extension, crystal boundary local stress are eliminated, so plasticity increases.Additionally, the addition of B can improve WC in solid solubility, and solid solution
The raising of degree can strengthen the intensity at Ir-WC-NdFeCo or Nb-WC-NdFeCo interfaces so that material toughness reinforcing.Show in table
Addition Nb or Ir, Nd2Fe14B is favorably improved the comprcssive strength of matrix alloy, and this is likely due to Nb, Ir, Nd, Fe element pole
For active, play a part of to purify crystal boundary, improve alloy interface intensity；Can adsorb on interface because of Ir, Nd simultaneously,
The interface energy of solid liquid interface is reduced, and this will reduce the growth of WC-Co or Ti-Co crystal grain so as to putting forward heavy alloyed intensity；Separately
Outward, the raising for adding the alloy solid solution degree after B can improve the boundary strength of alloy, so as to put forward heavy alloyed intensity.
Claims (10)
1. a kind of compound carbonizing tungsten hard alloy bar, it is characterised in that including the raw material of following weight portion：WC powder 80-90
Part, Co powder 0.3-0.8 parts, Nb or Ir powder 0.001-0.1 parts and Nd2Fe14B powder 0.5-12.5 parts.
2. compound carbonizing tungsten hard alloy bar according to claim 1, it is characterised in that including the original of following weight portion
Material：WC powder 85-90 parts, Co powder 0.5-0.7 parts, Nb or Ir powder 0.001-0.01 parts and Nd2Fe14B powder 3.5-7.5
Part.
3. compound carbonizing tungsten hard alloy bar according to claim 1, it is characterised in that including the original of following weight portion
Material：86.7 parts of WC powder, 0.49 part of Co powder, 0.0024 part and Nd of Nb or Ir powder2Fe1410.5 parts of B powder.
4. compound carbonizing tungsten hard alloy bar according to claim 1, it is characterised in that the granularity of described WC powder
For 150nm, Co powder is 0.2 μm, and Nb powder is 2 μm, and Ir powder is 2.8 μm, Nd2Fe144.5 μm of B powder.
5. compound carbonizing tungsten hard alloy bar according to claim 3, it is characterised in that the alloy bar material raw material is also wrapped
Include the polypropylene glycol ether, polyether ester or fatty acid ester of 5-15 parts.
6. the preparation method of the compound carbonizing tungsten hard alloy bar according to any one of Claims 1 to 5, its feature exist
In comprising the steps：By WC powder, Co powder, Nb powder or Ir powder, Nd2Fe14After B powder is mixed in proportion, in planet
Ball milling on formula ball mill, is provided with polypropylene glycol ether, polyether ester or fatty acid ester in ball mill, be spray-dried after ball milling 30-40h
Granulation, obtains Ir-WC-NdFeCo composite powders or Nb-WC-NdFeCo composite powders, under the composite powder argon is protected, in 50-
100Pa, at 1000 DEG C -1600 DEG C, insulation calcining 50-80min, obtains compound carbonizing tungsten hard alloy after stove is cooled to room temperature
Bar.
7. the preparation method of the compound carbonizing tungsten hard alloy bar according to any one of Claims 1 to 5, its feature exist
In comprising the steps：By WC powder, Co powder, Nb powder or Ir powder, Nd2Fe14After B powder is mixed in proportion, in planet
Ball milling on formula ball mill, is provided with polypropylene glycol ether, polyether ester or fatty acid ester in ball mill, be spray-dried after ball milling 30-40h
Granulation, obtains Ir-WC-NdFeCo composite powders or Nb-WC-NdFeCo composite powders, and the composite powder is compressing under 100MPa,
Jing after hydrogen defat under argon protection, in 50-100Pa, at 1000 DEG C -1600 DEG C, insulation calcining 50-80min, treats that stove is cooled to
Compound carbonizing tungsten hard alloy bar is obtained after room temperature.
8. the preparation method of the compound carbonizing tungsten hard alloy bar according to any one of Claims 1 to 5, its feature exist
In comprising the steps：By WC powder, Co powder, Nb powder or Ir powder, Nd2Fe14After B powder is mixed in proportion, in planet
Ball milling on formula ball mill, is provided with polypropylene glycol ether, polyether ester or fatty acid ester in ball mill, be spray-dried after ball milling 30-40h
Granulation, obtains Ir-WC-NdFeCo composite powders or Nb-WC-NdFeCo composite powders, and by the composite powder in 400MPa, 400 DEG C push
Type is made, Jing after hydrogen defat under argon protection, in 5-10Pa, insulation calcining 50-80min, treats that stove is cold at 1000 DEG C -1600 DEG C
But compound carbonizing tungsten hard alloy bar is obtained to room temperature.
9. the preparation method of the compound carbonizing tungsten hard alloy bar according to any one of Claims 1 to 5, its feature exist
In comprising the steps：By WC powder, Co powder, Nb powder or Ir powder, Nd2Fe14After B powder is mixed in proportion, in planet
Ball milling on formula ball mill, is provided with polypropylene glycol ether, polyether ester or fatty acid ester in ball mill, be spray-dried after ball milling 30-40h
Granulation, obtains Ir-WC-NdFeCo composite powders or Nb-WC-NdFeCo composite powders, by composite powder compression molding under 450MPa,
The insulation calcining 50-80min at 1500 DEG C -1800 DEG C, obtains compound carbonizing tungsten hard alloy bar after stove is cooled to room temperature again
Material.
10. the preparation method of the compound carbonizing tungsten hard alloy bar according to any one of claim 1～6, its feature exist
In described WC powder may be replaced by TiC, and other add raw materials or preparation method and compound carbonizing titanium hard alloy bar
Other addition raw materials or preparation method it is identical, then a kind of compound carbonizing titanium hard alloy bar is obtained.
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|---|---|---|---|---|
| GB614053A (en) * | 1940-04-16 | 1948-12-08 | Lorraine Carbone | Improvements in or relating to the manufacture of alloys and compounds of tungsten, titanium and carbon |
| CN1036803A (en) * | 1989-04-28 | 1989-11-01 | 株洲硬质合金厂 | The Wimet that contains neodymium |
| US6514456B1 (en) * | 1999-10-12 | 2003-02-04 | Plansee Tizit Aktiengesellschaft | Cutting metal alloy for shaping by electrical discharge machining methods |
| WO2014122306A2 (en) * | 2013-02-11 | 2014-08-14 | Element Six Gmbh | Cemented carbide material and method of making same |
-
2015
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB614053A (en) * | 1940-04-16 | 1948-12-08 | Lorraine Carbone | Improvements in or relating to the manufacture of alloys and compounds of tungsten, titanium and carbon |
| CN1036803A (en) * | 1989-04-28 | 1989-11-01 | 株洲硬质合金厂 | The Wimet that contains neodymium |
| US6514456B1 (en) * | 1999-10-12 | 2003-02-04 | Plansee Tizit Aktiengesellschaft | Cutting metal alloy for shaping by electrical discharge machining methods |
| WO2014122306A2 (en) * | 2013-02-11 | 2014-08-14 | Element Six Gmbh | Cemented carbide material and method of making same |
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