CN106862551A - A kind of preparation method of cermet spherolite - Google Patents
A kind of preparation method of cermet spherolite Download PDFInfo
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- CN106862551A CN106862551A CN201710127803.7A CN201710127803A CN106862551A CN 106862551 A CN106862551 A CN 106862551A CN 201710127803 A CN201710127803 A CN 201710127803A CN 106862551 A CN106862551 A CN 106862551A
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- cermet
- spherolite
- preparation
- forming agent
- round
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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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
- B22F1/102—Metallic powder coated with organic material
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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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
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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
- 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
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Abstract
The present invention relates to Material Field, especially a kind of preparation method of cermet spherolite.Extrusion spheronization method is used in the method that the present invention is provided, at least one metal simple-substance that the raw material of cermet spherolite selected in extrusion includes is used as Binder Phase.Method of granulating of the present invention, it is process is simple, easily operated, with short production cycle；Product granularity is uniform, and particle surface is highly polished.
Description
Technical field
The present invention relates to Material Field, and in particular to the semi-finished product preparation method of cermet spherolite.
Background technology
Cermet refers to a kind of heterogeneous composite by the ceramic phase composition of metal or alloy and one or more,
Latter of which accounts for 15%~85% volume fraction, while at a temperature of preparation, the solubility asked of metal and ceramic phase is suitable
It is small.
WC-Co based ceramic metals as studying earliest cermet, due to hardness (HRC 80 ~ 92) very high,
High compression strength 6000MPa, has been applied to many fields.But due to W and Co shortages of resources, promote without tungsten gold
Belong to the development and exploitation of ceramics, so far after three generations：During the first generation is " World War II ", Germany bonds TiC production metals with Ni
Ceramics；The second generation is improvement TiC and other carbonizations in Ford Motor Company of the U.S. addition sixties in 20th century Mo to Ni Binder Phases
The wetability of thing, so as to improve the toughness of material；Nitride is then introduced the third generation cermet hard phase of alloy, changes single
It is mutually compound phase.Binder Phase is improved further through addition Co phases and other elements.Another new direction of cermet development is
Boride-base cerment.Due to boride ceramics have hardness very high, fusing point and excellent electric conductivity, corrosion resistance, from
And boride-base cerment is turned into most rising cermet.
WC-Co based ceramic metal spherolites are a kind of important high hardness materials of surfacing and sufacing, by adopting
Combined with matrix material with modes such as built-up welding, met the service life of the functional requirements such as wear resistant corrosion resistant, extension device and workpiece.
Hard alloy common at present refers to by tungsten carbide（WC）And cobalt（Co）Two kinds of key component compositions, maximum hardness can reach
1700HV（100g load）, while high rigidity, also with good wear-corrosion resistance.
The technology of preparing and technique of current WC-Co based ceramic metal spherolites are mainly by granulation, compacting, sintering and finishing
It is prepared from etc. step.Wherein pelletize many using sugar coating machine granulation, can mix rubber powder material and adjust Ceramic Balls by being continuously added
Granularity.
Pelletized using sugar coating machine, the distribution of semi-finished product particle size scope is wide, and surface is rougher, and ratio of briquetting is low, Granulation time
It is long.
The content of the invention
To solve the above problems, the present invention provides a kind of preparation method of cermet spherolite, can effectively lift ceramics
The smoothness of spherolite, reduces distribution.
To achieve these goals, the technical solution adopted in the present invention is, a kind of preparation method of cermet spherolite,
Cermet bar is prepared using extrusion way, cermet strip adoption is centrifuged into round as a ball mode cuts granulation.
Further, the preparation method of cermet spherolite, comprises the following steps：
（1）By metal ceramic powder and forming agent according to 4~12:1 ratio is well mixed；
（2）By step（1）In be well mixed ground material be put into extruder, obtain strip-shaped materials；
（3）By step（2）Middle strip-shaped materials are put into centrifugation spheronizator, cut round as a ball, obtain that pattern granularity is satisfactory to mix
Glue cermet particle.
Further, step（1）Described in metal ceramic powder be the ceramics comprising metal carbides and binding metal
Powder.
Further, described forming agent is the agent of SD series molds, paraffinic base forming agent, the PEG classes of 10~15wt% of concentration
One or more combination in forming agent.
Further, step（2）Described in be put into extruder in material humidity it is suitable, it is ensured that powder is abundant with forming agent
Infiltration, and forming agent solvent volatilizees 10~30% naturally, reaches the loose degree of agglomerating and hand rubbing of holding with a firm grip.
Further, step（2）Described in extruder be provided with the baffle plate that aperture is 0.5~2.0mm.
Further, step（3）The described cutting round as a ball time is 30~300s.
The present invention cermet spherolite that also further requirement protection is prepared from using the above method.
Beneficial effects of the present invention are as follows：
1. the particle size scope distribution that traditional sugar-coat mechanism grain mode is obtained is wide, and required particle size range is obtained after screening
Particle proportion is relatively low, causes low production efficiency；Particle obtained by cermet spherolite is prepared using mode of the present invention
Baffle plate aperture is approached when footpath is with extrusion, and size distribution is more concentrated, and the particle proportion that required particle size range is obtained after screening is high,
Largely improve production efficiency；Mode of the present invention significantly improves the production efficiency and once of cermet spherolite
Ratio of briquetting；
2. traditional sugar-coat mechanism grain mode promotes particle growth by the way of rubber powder material is mixed in addition, causes particle surface to glue
Out-of-flatness during knot powder；Cermet spherolite strip-shaped materials in extrusion are prepared using mode of the present invention to have compared
Densification, it is smooth by surface after orifice plate, between the high centrifugal force and particle during cutting is round as a ball due to high speed rotating band
Mutual extrusion friction, makes surface more smooth；Mode of the present invention significantly improves the surface state of cermet spherolite；
3. traditional sugar-coat mechanism grain mode promotes particle growth by the way of rubber powder material is mixed in addition, in particle growth process
In mix rubber powder and adjust particle size by being continuously added, cause the single pelletization to take long enough；Using present invention side
Formula prepares cermet spherolite and directly controls particle size by extruding orifice plate, and whole cutting pelletization only needs to 30~
300s；Mode of the present invention significantly shortens the production cycle of cermet spherolite.
Specific embodiment
The present invention is described in further detail below by specific embodiment.
Embodiment 1：Tungsten-cobalt carbide based ceramic metal spherolite（Tungsten carbide is hard particles, and cobalt is binding metal）Granulation
Method, comprises the following steps：
（1）By W-Co carbide hard metals compound and forming agent according to mass ratio 10~12:1 ratio is well mixed；
（2）The material after the completion of glue will be mixed to be uniformly added into extruder, described material humidity is suitable, it is ensured that powder and shaping
Agent is fully infiltrated, and forming agent solvent volatilizees 10~30% naturally, reaches the loose degree of agglomerating and hand rubbing of holding with a firm grip, and extrusion is obtained
The suitable strip-shaped materials of humidity；
（3）Round as a ball by strip-shaped materials addition spheronizator, cutting, the round as a ball time is 200~300s；
（4）Observation particle former situation, after treating that particle is spherical in shape, material is drawn off.
Described forming agent is the SD series mold agent that concentration is 13~15wt%, and described extruder is provided with aperture and is
The baffle plate of 1.5~2mm.Can be obtained by inspection, particle diameter is 1.5~2mm particles more than 99% in product.
Embodiment 2：Chromium carbide-nickel chromium based ceramic metal spherolite（Chromium carbide is hard particles, and nickel chromium triangle is binding metal）'s
Method of granulating, comprises the following steps：
（1）By chromium carbide-nickel chromium compound and forming agent according to mass ratio 4~7:1 ratio is well mixed；
（2）The material after the completion of glue will be mixed to be uniformly added into extruder, described material humidity is suitable, it is ensured that powder and shaping
Agent fully infiltrates, and forming agent solvent volatilizees 10~30% naturally, reaches the loose degree of agglomerating and hand rubbing of holding with a firm grip；Extruder is squeezed
Go out to obtain the suitable strip-shaped materials of humidity；
（3）Round as a ball by strip-shaped materials addition spheronizator, cutting, the round as a ball time is 30~100s；
（4）Observation particle former situation, after treating that particle is spherical in shape, material is drawn off.
Described forming agent is paraffinic base forming agent that concentration is 10~12wt% and the combination of PEG class forming agents, described
Extruder is provided with the baffle plate that aperture is 0.5~1mm.By inspection can obtain, in product particle diameter be 0.5~1mm particles 99% with
On.
Embodiment 3：Titanium carbide-nickel molybdenum-based cermet spherolite（Titanium carbide is hard particles, and nickel molybdenum is binding metal）'s
Method of granulating, comprises the following steps：
（1）By titanium carbide-nickel molybdenum mixture by taking and forming agent according to mass ratio 7~10:1 ratio is well mixed；
（2）The material after the completion of glue will be mixed to be uniformly added into extruder, described material humidity is suitable, it is ensured that powder and shaping
Agent fully infiltrates, and forming agent solvent volatilizees 10~30% naturally, reaches the loose degree of agglomerating and hand rubbing of holding with a firm grip；Extruder is squeezed
Go out to obtain the suitable strip-shaped materials of humidity；
（3）Round as a ball by strip-shaped materials addition spheronizator, cutting, the round as a ball time is 100~200s；
（4）Observation particle former situation, after treating that particle is spherical in shape, material is drawn off.
Described forming agent is paraffinic base forming agent that concentration is 12~13wt% and the combination of SD series mold agent, described
Extruder be provided with the baffle plate that aperture is 1~1.5mm.Can be obtained by inspection, particle diameter is 1~1.5mm particles 99% in product
More than.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area
For art personnel, there can be various modifications and variations in the spirit and principles in the present invention, these equivalent modifications or replacement etc.,
It is all contained within protection scope of the present invention.
Claims (8)
1. a kind of preparation method of cermet spherolite, it is characterised in that：Cermet bar is prepared using extrusion way, by metal
Ceramic strip adoption is centrifuged round as a ball mode and cuts granulation.
2. the preparation method of cermet spherolite according to claim 1, comprises the following steps：
（1）By metal ceramic powder and forming agent according to 4~12:1 ratio is well mixed；
（2）By step（1）In be well mixed ground material be put into extruder, obtain strip-shaped materials；
（3）By step（2）Middle strip-shaped materials are put into centrifugation spheronizator, cut round as a ball, obtain that pattern granularity is satisfactory to mix
Glue cermet particle.
3. the preparation method of cermet spherolite according to claim 2, step（1）Described in metal ceramic powder be
Ceramic powders comprising metal carbides and binding metal.
4. the preparation method of cermet spherolite according to claim 2, step（1）It is characterized in that：Described shaping
Agent is one or more combination in the agent of SD series molds, paraffinic base forming agent, the PEG class forming agents of 10~15wt% of concentration.
5. the preparation method of cermet spherolite according to claim 2, it is characterised in that：Step（2）Described in be put into
Material humidity is suitable in extruder, it is ensured that powder fully infiltrates with forming agent, and forming agent solvent volatilizees 10~30% naturally,
Reach the loose degree of agglomerating and hand rubbing of holding with a firm grip.
6. the preparation method of cermet spherolite according to claim 2, it is characterised in that：Step（2）Described in squeeze
Go out machine and be provided with the baffle plate that aperture is 0.5~2.0mm.
7. the preparation method of cermet spherolite according to claim 2, it is characterised in that：Step（3）Described in cut
The round as a ball time is cut for 30~300s.
8. a kind of cermet spherolite being made according to any described method of granulating of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710127803.7A CN106862551A (en) | 2017-03-06 | 2017-03-06 | A kind of preparation method of cermet spherolite |
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| CN201710127803.7A CN106862551A (en) | 2017-03-06 | 2017-03-06 | A kind of preparation method of cermet spherolite |
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| CN106862551A true CN106862551A (en) | 2017-06-20 |
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| CN201710127803.7A Pending CN106862551A (en) | 2017-03-06 | 2017-03-06 | A kind of preparation method of cermet spherolite |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002220602A (en) * | 2001-01-29 | 2002-08-09 | Sumitomo Electric Ind Ltd | Spherical metal powder and production method of the same |
| CN1410575A (en) * | 2002-12-02 | 2003-04-16 | 株洲硬质合金集团有限公司 | Metal ceramic and its preparation method |
| CN1793058A (en) * | 2005-11-10 | 2006-06-28 | 上海交通大学 | Process for preparing large particle spherical metal ceramic nano composite spraying powder |
| CN101670251A (en) * | 2009-06-09 | 2010-03-17 | 中轻化工股份有限公司 | Method for preparing spherical anion surfactant |
| CN101811876A (en) * | 2010-04-29 | 2010-08-25 | 郑州德赛尔陶粒有限公司 | Production method of haydite proppant |
| CN101884892A (en) * | 2010-06-25 | 2010-11-17 | 北京工业大学 | Method for agglomerating and granulizing superfine nano WC-Co composite powder |
| CN102312147A (en) * | 2010-06-30 | 2012-01-11 | 钴碳化钨硬质合金公司 | The carbide spherolite that is used for wear-resistant application |
-
2017
- 2017-03-06 CN CN201710127803.7A patent/CN106862551A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002220602A (en) * | 2001-01-29 | 2002-08-09 | Sumitomo Electric Ind Ltd | Spherical metal powder and production method of the same |
| CN1410575A (en) * | 2002-12-02 | 2003-04-16 | 株洲硬质合金集团有限公司 | Metal ceramic and its preparation method |
| CN1793058A (en) * | 2005-11-10 | 2006-06-28 | 上海交通大学 | Process for preparing large particle spherical metal ceramic nano composite spraying powder |
| CN101670251A (en) * | 2009-06-09 | 2010-03-17 | 中轻化工股份有限公司 | Method for preparing spherical anion surfactant |
| CN101811876A (en) * | 2010-04-29 | 2010-08-25 | 郑州德赛尔陶粒有限公司 | Production method of haydite proppant |
| CN101884892A (en) * | 2010-06-25 | 2010-11-17 | 北京工业大学 | Method for agglomerating and granulizing superfine nano WC-Co composite powder |
| CN102312147A (en) * | 2010-06-30 | 2012-01-11 | 钴碳化钨硬质合金公司 | The carbide spherolite that is used for wear-resistant application |
Non-Patent Citations (1)
| Title |
|---|
| 杨杜鹃，叶金文等: "《SD成型剂对Ti（C,N）基金属陶瓷显微结构和力学性能的影响》", 《功能材料》 * |
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Application publication date: 20170620 |