CN106282716A - Hard alloy and manufacture method thereof - Google Patents
Hard alloy and manufacture method thereof Download PDFInfo
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- CN106282716A CN106282716A CN201610883787.XA CN201610883787A CN106282716A CN 106282716 A CN106282716 A CN 106282716A CN 201610883787 A CN201610883787 A CN 201610883787A CN 106282716 A CN106282716 A CN 106282716A
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- tungsten
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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
- 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
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
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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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Abstract
The invention belongs to field of powder metallurgy.Disclosing a kind of hard alloy, it is mainly prepared by following raw material: tungsten-carbide powder, cobalt powder, weight ratio are tungsten-carbide powder and the WB (Me) of the 0.1% of cobalt powder～2.0% and diamond micropowder that weight ratio is tungsten-carbide powder and the 0.5% of cobalt powder～10.0%；Also disclose the manufacture method of a kind of hard alloy, including by raw material: tungsten-carbide powder, cobalt powder, weight ratio are tungsten-carbide powder and the WB (Me) of the 0.1% of cobalt powder～2.0% and diamond micropowder that weight ratio is tungsten-carbide powder and the 0.5% of cobalt powder～10.0%, and molding glue is sufficiently mixed, column it is pressed in a mold by four-column press, load after dewaxing in composite pyrophyllite and use cubic hinge press increasing temperature and pressure sintering, take out after pressure release.The present invention can improve wearability and the toughness of hard alloy simultaneously, and the wear resistance ratio of its finished product is better than existing hard alloy.
Description
[technical field]
The invention belongs to field of powder metallurgy, particularly relate to a kind of hard alloy and manufacture method thereof.
[background technology]
The yield of anticipated 2016 China's hard alloys will arrive 30,000 tons, and total industrial output value reaches about 23,000,000,000 yuan.Hard
Alloy has the highest hardness, intensity, wearability and corrosion resistance, is described as " industry tooth ", is used for manufacturing cutting element, cutter
Tool, drilling tool and wear-resisting spare part, be widely used in military project, space flight and aviation, machining, metallurgy, oil drilling, mine instrument,
The field such as telecommunications, building, with the development of downstream industry, the hard alloy market demand continues to increase.Meanwhile, following high-new
Technology weapon equipment manufacturing, the progress of most advanced branches of science technology and the fast development of nuclear power source, will be continuously increased and contain high-tech
The demand of the hart metal product of amount and high-quality stability.
YG3X hard alloy belongs to a branch in hard alloy field, and YG3X is equivalent to the K01 in iso standard.YG3X
Hard alloy density is 14.6-15.2g/cm2, bending strength is not less than 1320N/cm2, hardness is not less than 92HRA, be suitable to cast iron,
Nonferrous metal and alloy hardened steel steel alloy little cutting section High speed finish machining, but the YG3X hard alloy of such parameter can not
Fully meet market demands.
[summary of the invention]
For solving above-mentioned technical problem, the present invention provides a kind of wear resistance ratio more preferably hard alloy and manufacture method thereof.
For solving above-mentioned technical problem, embodiment of the present invention offer techniques below scheme:
A kind of hard alloy, it mainly prepares by following raw material: tungsten-carbide powder, cobalt powder, weight ratio are tungsten carbide powder
End and cobalt powder 0.1%～2.0% WB (Me) and weight ratio be tungsten-carbide powder and the brill of the 0.5% of cobalt powder～10.0%
Stone micropowder.
Alternatively, the particle size range of described WB (Me) is: 0.5～5.0 micron, and the particle size range of described diamond micropowder is:
1.0～500.0 microns.
Alternatively, described hard alloy is YG3X hard alloy.
Alternatively, the granularity of described WB (Me) is 0.1～1 micron, and its weight ratio is tungsten-carbide powder and cobalt powder
1.94%；The granularity of described diamond micropowder is 20～30 microns, and its weight ratio is the 1.94% of tungsten-carbide powder and cobalt powder.
Alternatively, the granularity of described WB (Me) is 0.1～1 micron, and its weight ratio is tungsten-carbide powder and cobalt powder
0.97%；The granularity of described diamond micropowder is 10～20 microns, and its weight ratio is the 0.97% of tungsten-carbide powder and cobalt powder.
Alternatively, the granularity of described WB (Me) is 1～2 micron, and its weight ratio is the 1.46% of tungsten-carbide powder and cobalt powder；
The granularity of described diamond micropowder is 7～10 microns, and its weight ratio is the 0.58% of tungsten-carbide powder and cobalt powder.
Alternatively, the granularity of described WB (Me) is 0.5～1 micron, and its weight ratio is tungsten-carbide powder and cobalt powder
0.78%；The granularity of described diamond micropowder is 450～500 microns, and its weight ratio is the 4.85% of tungsten-carbide powder and cobalt powder.
Alternatively, the granularity of described WB (Me) is 3.0～5.0 microns, and its weight ratio is tungsten-carbide powder and cobalt powder
0.15%；The granularity of described diamond micropowder is 200～250 microns, and its weight ratio is the 9.71% of tungsten-carbide powder and cobalt powder.
For solving above-mentioned technical problem, the embodiment of the present invention also provides for techniques below scheme:
The manufacture method of a kind of hard alloy, including by raw material: tungsten-carbide powder, cobalt powder, weight ratio are tungsten carbide powder
The diamond of the WB (Me) and 0.5%-10.0% that weight ratio is tungsten-carbide powder and cobalt powder of the 0.1%-2.0% of end and cobalt powder
Micropowder, and molding glue is sufficiently mixed, and is pressed into column in a mold by four-column press, loads composite pyrophyllite after dewaxing
Middle use cubic hinge press increasing temperature and pressure sinters, and takes out after pressure release.
Alternatively, described increasing temperature and pressure sintering includes: first pressure line boost to 70Mpa for 2 minutes, after pressurize 5 seconds
Begin to warm up, the output electric current of heater was raised to 1080 amperes in 10 seconds, again electric current is raised at a slow speed for 110 seconds after being incubated 8 minutes
1450 amperes, constant temperature stops heat supply in 5 minutes, and power line returns to 0, then pressure release after two minutes, and pressure line returns to 0, sintering
Overall process was calculated according to the time providing electric current, totally 15 minutes.
Compared with prior art, the embodiment of the present invention with the addition of weight ratio in tungsten-carbide powder and cobalt powder is tungsten carbide
Powder and the WB (Me) of the 0.1% of cobalt powder～2.0% and weight ratio are tungsten-carbide powder and the 0.5% of cobalt powder～10.0%
The 1.0%～2.0% of diamond micropowder, can improve wearability and the toughness of the hard alloy of the embodiment of the present invention, its finished product simultaneously
Wear resistance ratio be better than existing hard alloy.
[accompanying drawing explanation]
Fig. 1 is the artwork of the sintering of increasing temperature and pressure in YG3X hard alloy manufacture method that the embodiment of the present invention provides.
[detailed description of the invention]
In order to make the purpose of the present invention, method scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, not
For limiting the present invention.
The embodiment of the present invention provides a kind of YG3X hard alloy, and it is mainly prepared by following raw material: tungsten-carbide powder, cobalt
Powder, weight ratio are tungsten-carbide powder and the WB (Me) of the 0.1% of cobalt powder～2.0% and weight ratio is tungsten-carbide powder and cobalt powder
0.5%～10.0% diamond micropowder.Wherein the weight ratio of tungsten-carbide powder and cobalt powder is 100:3.
WB (Me) is the boron series compound of tungsten, and wherein Me is the english abbreviation of metal, and noble metal rhenium Re is therein one
Planting optimum selection, also have other optional metal such as titanium, various rare earth elements etc., its microhardness is 50Gpa.
The particle size range of described WB (Me) is: 0.5～5.0 micron.
The particle size range of described diamond micropowder is: 1.0～500.0 microns.
It is tungsten-carbide powder and cobalt powder that the embodiment of the present invention with the addition of weight ratio in tungsten-carbide powder and cobalt powder
The WB of 0.1%-2.0%nAnd the diamond micropowder of 0.5%-10.0% that weight ratio is tungsten-carbide powder and cobalt powder (Me)
1.0%-2.0%, can improve wearability and the toughness of the hard alloy of the embodiment of the present invention simultaneously, and the wear resistance ratio of its finished product is better than
Existing YG3X hard alloy.
The embodiment of the present invention also provides for the manufacture method of a kind of YG3X hard alloy, including: by tungsten-carbide powder, cobalt powder,
Weight ratio is the WB (Me) of the 0.1%-2.0% of tungsten-carbide powder and cobalt powder, weight ratio is tungsten-carbide powder and cobalt powder
The diamond micropowder of 0.5%-10.0%, and molding glue is sufficiently mixed, and is pressed into column in a mold by four-column press, de-
Load after wax in composite pyrophyllite and use cubic hinge press increasing temperature and pressure sintering, take out after pressure release, i.e. obtain the embodiment of the present invention
YG3X hard alloy.
Described cubic hinge press uses 6 × 3000T press that Shaoguan Saipu Superhard Material Technology Co., Ltd. produces.
The embodiment of the present invention uses cubic hinge press hot pressed sintering manufacture to obtain the YG3X hard alloy of the embodiment of the present invention,
Its wearability gets both with toughness, and performance is better than the YG3X hard alloy obtained by vacuum or inert gas shielding sintering method.
Embodiment 1
Weighing the tungsten-carbide powder of 10 kilograms of 2.8-3.5 microns, the cobalt powder of 0.3 kilogram 1.0 microns, 0.3 kilogram of molding is used
Glue, the WB (Me) of 0.2 kilogram 0.1～1 micron, and the diamond micropowder of 0.2 kilogram 20～30 microns, and the most mixed by five
Close, be pressed into column by four-column press in a mold, load in composite pyrophyllite after 100-800 degree Celsius of dewaxing, then press Fig. 1
Shown sintering process line uses cubic hinge press to be sintered, and in figure, abscissa is time shaft, and vertical coordinate is that pressure, power are fixed
Property represents.First pressure line boosts to 70Mpa for 2 minutes, and pressurize began to warm up after 5 seconds, and 10 seconds by the output electricity of heater
Stream is raised to 1080 amperes, again electric current is raised at a slow speed 1450 amperes for 110 seconds after being incubated 8 minutes, and constant temperature stops heat supply, merit in 5 minutes
Rate line returns to 0, then pressure release after two minutes, and pressure line returns to 0, and sintering overall process was calculated according to the time providing electric current,
Totally 15 minutes.The examination of the YG3X hard alloy after diamond micropowder and WB (Me) material modification of the embodiment of the present invention is taken out after pressure release
Testing block, after processing, testing experiment block density is 14.6-15.2g/cm2, bending strength is not less than 1850N/cm2, hardness is not less than
92HRA (corresponding HRC is more than 80).Existing YG3X hard alloy and the embodiment of the present invention is surveyed respectively with standard silicon carbide emery wheel
Modified YG3X hard alloy, existing YG3X hard alloy is 2:20 relative to emery wheel abrasion, and the embodiment of the present invention is modified
YG3X hard alloy relative to emery wheel abrasion be 1.5:20.
Embodiment 2
Weighing the tungsten-carbide powder of 10 kilograms of 1.0-2.0 microns, the cobalt powder of 0.3 kilogram 1.0 microns, 0.3 kilogram of molding is used
Glue, the WB (Me) of 0.1 kilogram 0.1～1 micron, and the diamond micropowder of 0.1 kilogram 10～20 microns, and the most mixed by five
Close, be pressed into column by four-column press in a mold, load in composite pyrophyllite after 100-800 degree Celsius of dewaxing, use hexahedro
High pressure apparatus is sintered, and flow process, with embodiment 1, takes out changing through diamond micropowder and WB (Me) material of the embodiment of the present invention after pressure release
YG3X hard alloy test block after property, after processing, testing experiment block density is 14.6-15.2g/cm2, bending strength is not less than
2500N/cm2, hardness is not less than 93HRA (corresponding HRC is more than 80).Existing YG3X is surveyed respectively hard with standard silicon carbide emery wheel
Matter alloy and the modified YG3X hard alloy of the embodiment of the present invention, existing YG3X hard alloy is 2 relative to emery wheel abrasion:
20, the modified YG3X hard alloy of the embodiment of the present invention is 1.66:20 relative to emery wheel abrasion.
Embodiment 3
Weighing the tungsten-carbide powder of 10 kilograms of 2.0-2.8 microns, the cobalt powder of 0.3 kilogram 1.0 microns, 0.3 kilogram of molding is used
Glue, the WB (Me) of 0.15 kilogram 1～2 micron, and the diamond micropowder of 0.06 kilogram 7～10 microns, and the most mixed by five
Close, be pressed into column by four-column press in a mold, load in composite pyrophyllite after 100-800 degree Celsius of dewaxing, use hexahedro
High pressure apparatus is sintered, flow process with embodiment 1, take out after pressure release the embodiment of the present invention through diamond micropowder and WB (Me) new material
Modified YG3X hard alloy test block, after processing, testing experiment block density is 14.6-15.2g/cm2, bending strength is the lowest
In 2500N/cm2, hardness is not less than 93.5HRA (corresponding HRC is more than 80).Survey existing respectively with standard silicon carbide emery wheel
YG3X hard alloy and the modified YG3X hard alloy of the embodiment of the present invention, existing YG3X hard alloy wears away relative to emery wheel
Being 2:20, the modified YG3X hard alloy of the embodiment of the present invention is 1.7:20 relative to emery wheel abrasion.
Embodiment 4
Weighing the tungsten-carbide powder of 10 kilograms of 1.5-3.3 microns, the cobalt powder of 0.3 kilogram 1.0 microns, 0.3 kilogram of molding is used
Glue, the WB (Me) of 0.08 kilogram 0.5～1 micron, and the diamond micropowder of 0.5 kilogram 450～500 microns, and fill five
Divide mixing, be pressed into column by four-column press in a mold, load after 100-800 degree Celsius of dewaxing in composite pyrophyllite, use
Cubic hinge press is sintered, flow process with embodiment 1, take out after pressure release the embodiment of the present invention through diamond micropowder and WB (Me) material
Expecting modified YG3X hard alloy test block, after processing, testing experiment block density is 14.6-15.2g/cm2, bending strength is not
Less than 1500N/cm2, hardness is not less than 94.5HRA (corresponding HRC is more than 80).Survey existing respectively with standard silicon carbide emery wheel
YG3X hard alloy and the modified YG3X hard alloy of the embodiment of the present invention, existing YG3X hard alloy wears away relative to emery wheel
Being 2:20, the modified YG3X hard alloy of the embodiment of the present invention is 0.5:20 relative to emery wheel abrasion.
Embodiment 5
Weighing the tungsten-carbide powder of 10 kilograms of 2.1-2.0 microns, the cobalt powder of 0.3 kilogram 1.0 microns, 0.3 kilogram of molding is used
Glue, the WB (Me) of 0.015 kilogram 3.0～5.0 microns, and the diamond micropowder of 1.0 kilograms 200～250 microns, and by five
It is sufficiently mixed, is pressed into column by four-column press in a mold, loads in composite pyrophyllite after 100-800 degree Celsius of dewaxing, make
Be sintered with cubic hinge press, flow process with embodiment 1, take out after pressure release the embodiment of the present invention through diamond micropowder and WB (Me)
The YG3X hard alloy test block that new material is modified, after processing, testing experiment block density is 14.6-15.2g/cm2, bending resistance is strong
Degree is not less than 1600N/cm2, hardness is not less than 95HRA (corresponding HRC is more than 80).Survey existing respectively with standard silicon carbide emery wheel
YG3X hard alloy and the modified YG3X hard alloy of the embodiment of the present invention, existing YG3X hard alloy grinds relative to emery wheel
Consumption is 2:20, and the modified YG3X hard alloy of the embodiment of the present invention is 1.0:20 relative to emery wheel abrasion.
In the present invention in embodiment, with the addition of weight ratio in tungsten-carbide powder and cobalt powder is tungsten-carbide powder and cobalt powder
The diamond micropowder of WB (Me) and 0.5%-10.0% that weight ratio is tungsten-carbide powder and cobalt powder of 0.1%-2.0%, can
Improving wearability and the toughness of the YG3X hard alloy of the embodiment of the present invention, the wear resistance ratio of its finished product is better than existing YG3X simultaneously
Hard alloy.The embodiment of the present invention uses cubic hinge press hot-pressing sintering technique to manufacture simultaneously, it is thus achieved that YG3X hard alloy
Performance parameter is better than existing vacuum or the YG3X hard alloy obtained by inert gas shielding sintering method.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any amendment, equivalent and the improvement etc. made within god and principle, should be included within the scope of the present invention.
Claims (10)
1. a hard alloy, it is characterised in that it is mainly prepared by following raw material: tungsten-carbide powder, cobalt powder, weight ratio are
Tungsten-carbide powder and the WB (Me) of the 0.1% of cobalt powder～2.0% and weight ratio be tungsten-carbide powder and the 0.5% of cobalt powder～
The diamond micropowder of 10.0%.
Hard alloy the most according to claim 1, it is characterised in that the particle size range of described WB (Me) is: 0.5～5.0
Micron, the particle size range of described diamond micropowder is: 1.0～500.0 microns.
Hard alloy the most according to claim 1, it is characterised in that described hard alloy is YG3X hard alloy.
4. according to one of any described hard alloy of claim 1-3, it is characterised in that the granularity of described WB (Me) is 0.1
～1 micron, its weight ratio is the 1.94% of tungsten-carbide powder and cobalt powder；The granularity of described diamond micropowder is 20～30 microns, its
Weight ratio is the 1.94% of tungsten-carbide powder and cobalt powder.
5. according to one of any described hard alloy of claim 1-3, it is characterised in that the granularity of described WB (Me) is 0.1
～1 micron, its weight ratio is the 0.97% of tungsten-carbide powder and cobalt powder；The granularity of described diamond micropowder is 10～20 microns, its
Weight ratio is the 0.97% of tungsten-carbide powder and cobalt powder.
6. according to one of any described hard alloy of claim 1-3, it is characterised in that the granularity of described WB (Me) is 1～2
Micron, its weight ratio is the 1.46% of tungsten-carbide powder and cobalt powder；The granularity of described diamond micropowder is 7～10 microns, its weight
Ratio is tungsten-carbide powder and the 0.58% of cobalt powder.
7. according to one of any described hard alloy of claim 1-3, it is characterised in that the granularity of described WB (Me) is 0.5
～1 micron, its weight ratio is the 0.78% of tungsten-carbide powder and cobalt powder；The granularity of described diamond micropowder is 450～500 microns,
Its weight ratio is the 4.85% of tungsten-carbide powder and cobalt powder.
8. according to one of any described hard alloy of claim 1-3, it is characterised in that the granularity of described WB (Me) is 3.0
～5.0 microns, its weight ratio is the 0.15% of tungsten-carbide powder and cobalt powder；The granularity of described diamond micropowder is 200～250 micro-
Rice, its weight ratio is the 9.71% of tungsten-carbide powder and cobalt powder.
9. the manufacture method of a hard alloy, it is characterised in that include raw material: tungsten-carbide powder, cobalt powder, weight ratio are
The WB (Me) of the 0.1%-2.0% of tungsten-carbide powder and cobalt powder and the 0.5%-that weight ratio is tungsten-carbide powder and cobalt powder
The diamond micropowder of 10.0%, and molding glue is sufficiently mixed, and is pressed into column in a mold by four-column press, fills after dewaxing
Enter composite pyrophyllite uses cubic hinge press increasing temperature and pressure sintering, take out after pressure release.
Manufacture method the most according to claim 9, it is characterised in that described increasing temperature and pressure sintering includes: first by pressure
Line boosts to 70Mpa for 2 minutes, and pressurize begins to warm up after 5 seconds, the output electric current of heater was raised to 1080 amperes in 10 seconds, protects
Electric current was raised at a slow speed 1450 amperes for 110 seconds after 8 minutes by temperature again, and constant temperature 5 minutes stops heat supply, and power line returns to 0, and then two
Pressure release after minute, pressure line returns to 0, and sintering overall process was calculated according to the time providing electric current, totally 15 minutes.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1548567A (en) * | 2003-05-09 | 2004-11-24 | 张春友 | Non-magnetic WC hard alloy steel material |
| CN101151386A (en) * | 2005-03-28 | 2008-03-26 | 京瓷株式会社 | Ultra-hard alloy and cutting tool |
| JP2012077352A (en) * | 2010-10-01 | 2012-04-19 | National Institute Of Advanced Industrial Science & Technology | Cemented carbide alloy, and cemented carbide tool |
-
2016
- 2016-10-09 CN CN201610883787.XA patent/CN106282716A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1548567A (en) * | 2003-05-09 | 2004-11-24 | 张春友 | Non-magnetic WC hard alloy steel material |
| CN101151386A (en) * | 2005-03-28 | 2008-03-26 | 京瓷株式会社 | Ultra-hard alloy and cutting tool |
| JP2012077352A (en) * | 2010-10-01 | 2012-04-19 | National Institute Of Advanced Industrial Science & Technology | Cemented carbide alloy, and cemented carbide tool |
Non-Patent Citations (1)
| Title |
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| 陈文革: "《大学生生产实习教程 材料科学与工程大专业用》", 31 May 2014 * |
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