CN108033790A - A kind of preparation method of non-bond cemented carbide - Google Patents
A kind of preparation method of non-bond cemented carbide Download PDFInfo
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- CN108033790A CN108033790A CN201711388925.8A CN201711388925A CN108033790A CN 108033790 A CN108033790 A CN 108033790A CN 201711388925 A CN201711388925 A CN 201711388925A CN 108033790 A CN108033790 A CN 108033790A
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/5607—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on refractory metal carbides
- C04B35/5626—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on refractory metal carbides based on tungsten carbides
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/64—Burning or sintering processes
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- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3839—Refractory metal carbides
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3839—Refractory metal carbides
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/66—Specific sintering techniques, e.g. centrifugal sintering
- C04B2235/661—Multi-step sintering
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Abstract
The present invention relates to a kind of preparation method of non-bond cemented carbide, mainly include the following steps that：Batch mixing：WC powder, TiC powder, TaC powder and binder are weighed according to a certain percentage, carry out ball milling drying；Compression molding：Mixed powder is subjected to compression molding by automatic moulding machine；Vacuum-sintering：Vacuum-sintering is taken to carry out at a certain temperature pre-sintered；HIP sintering：Base substrate after pre-sintering, which is put into high temperature insostatic pressing (HIP) stove, carries out HIP sintering promotion densification.The technology of the present invention can obtain high fine and close or even fully dense non-bond cemented carbide product, and the 99.9% of material density accessibility theory density, be conducive to lift material property.
Description
Technical field
The present invention relates to hard alloy preparing technical field, more particularly to a kind of preparation side of non-bond cemented carbide
Method.
Background technology
Hard alloy has high rigidity, high-wearing feature, good chemical stability and heat endurance, is widely used in the modern times
Tool materials, wear-resistant material, heat-resisting material, resistant material etc..General hard alloy be by hard phase (based on WC) and
Binder Phase (iron group metal) is formed.Non-bond cemented carbide is a kind of cemented carbide material without Binder Phase, is had excellent
Mechanical property and corrosion resistance, be mainly used in the application field of requirement highly corrosion resistant and high-wearing feature.
Non-bond cemented carbide sintering densification is relatively difficult, is difficult to obtain densification production using conventional sintering process
Product.Handled by HIP sintering, most of micro-pore in product can be eliminated, high densification product is obtained, be conducive to
Enhance product performance.
The content of the invention
The present invention is intended to provide a kind of preparation method of non-bond cemented carbide, can prepare high densification product, material
Excellent performance.
To solve the above problems, the technical solution used is：
A kind of preparation method of non-bond cemented carbide, includes the following steps：
(1) batch mixing：WC powder, TiC powder, TaC powder and binder are weighed according to a certain percentage, are put into ball grinding cylinder, is added
Mill Jie's ball and decentralized medium, ball milling take out and dry sieving afterwards for a period of time；
(2) compression molding：Mixed powder is subjected to compression molding by automatic moulding machine；
(3) vacuum-sintering：Vacuum-sintering is taken to carry out at a certain temperature pre-sintered；
(4) HIP sintering：Base substrate after pre-sintering, which is put into high temperature insostatic pressing (HIP) stove, carries out HIP sintering promotion cause
Densification.
The object of the invention to solve the technical problems can be also applied to the following technical measures to achieve further：
A kind of preparation method of foregoing non-bond cemented carbide, wherein, the mass fraction of the powder is：WC powder 93
~96%, TiC powder 2~4%, TaC powder 1~3%.
A kind of preparation method of foregoing non-bond cemented carbide, wherein, binder is paraffin, and addition weight is powder
The 2~5% of raw material weight.
A kind of preparation method of foregoing non-bond cemented carbide, wherein, mill Jie ball during ball milling is sintered carbide ball,
Decentralized medium is acetone.Ball material weight ratio is 3：1, solid-liquid volume ratio is 1：5, Ball-milling Time is 50~80h.
A kind of preparation method of foregoing non-bond cemented carbide, wherein, the compressing pressure of molding is 180MPa.
A kind of preparation method of foregoing non-bond cemented carbide, wherein, the sintering temperature of vacuum-sintering for 1600~
1700 DEG C, soaking time is 40~90min.
A kind of preparation method of foregoing non-bond cemented carbide, wherein, the sintering temperature of HIP sintering is
1400~1500 DEG C, pressure is 80~150MPa, and soaking time is 40~90min.
Compared with prior art, complex-shaped product can be prepared by injection molding technology in the present invention, obtains essence
Fine ceramic, raw material availability is high, is adapted to produce in enormous quantities.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, and in order to allow the present invention above-mentioned advantage and other purposes, feature and advantage
It can become apparent, below especially exemplified by preferred embodiment, describe in detail as follows.
Brief description of the drawings
Nothing
Embodiment
Embodiment 1：
A kind of preparation method of non-bond cemented carbide, includes the following steps：
(1) batch mixing：Weigh 93%WC powder, 3%TiC powder, 3%TaC powder to be put into ball grinding cylinder, add hard alloy mill Jie's ball
With acetone decentralized medium.Add 3% paraffin binder of powder raw material, ratio of grinding media to material 3：1 (weight ratio), solid-to-liquid ratio 1：5
(volume ratio), Ball-milling Time 72h, takes out after ball milling and dries sieving；
(2) compression molding：Mixed powder is subjected to compression molding, the compressing pressure of molding by automatic moulding machine
Power is 180MPa；
(3) vacuum-sintering：Vacuum sintering method is taken to carry out pre-sintered, vacuum-sintering temperature is 1650 DEG C, soaking time
For 60min；
(4) HIP sintering：Base substrate after pre-sintering, which is put into high temperature insostatic pressing (HIP) stove, carries out HIP sintering promotion cause
Densification, the sintering temperature of HIP sintering is 1450 DEG C, pressure 100MPa, soaking time 40min.
Embodiment 2：
A kind of preparation method of non-bond cemented carbide, includes the following steps：
(1) batch mixing：Weigh 94.5%WC powder, 3%TiC powder, 2.5%TaC powder to be put into ball grinding cylinder, add hard alloy mill
Jie's ball and acetone decentralized medium.Add 3% paraffin binder of powder raw material, ratio of grinding media to material 3：1 (weight ratio), solid-to-liquid ratio are
1：5 (volume ratios), Ball-milling Time 72h, takes out after ball milling and dries sieving；
(2) compression molding：Mixed powder is subjected to compression molding, the compressing pressure of molding by automatic moulding machine
Power is 180MPa；
(3) vacuum-sintering：Vacuum sintering method is taken to carry out pre-sintered, vacuum-sintering temperature is 1650 DEG C, soaking time
For 60min；
(4) HIP sintering：Base substrate after pre-sintering, which is put into high temperature insostatic pressing (HIP) stove, carries out HIP sintering promotion cause
Densification, the sintering temperature of HIP sintering is 1430 DEG C, pressure 120MPa, soaking time 60min.
The above described is only a preferred embodiment of the present invention, not doing limitation in any form to the present invention, appoint
What those skilled in the art, without departing from the scope of the present invention, is made a little using above-mentioned technology contents
Change or the embodiment of modification, in the range of still falling within technical solution of the present invention.
Claims (7)
1. a kind of preparation method of non-bond cemented carbide, it is characterised in that include the following steps：
Batch mixing：WC powder, TiC powder, TaC powder and binder are weighed according to a certain percentage, are put into ball grinding cylinder, add mill Jie's ball and
Decentralized medium, ball milling take out and dry sieving afterwards for a period of time；
Compression molding：Mixed powder is subjected to compression molding by automatic moulding machine；
Vacuum-sintering：Vacuum-sintering is taken to carry out at a certain temperature pre-sintered；
HIP sintering：Base substrate after pre-sintering, which is put into high temperature insostatic pressing (HIP) stove, carries out HIP sintering promotion densification.
A kind of 2. preparation method of non-bond cemented carbide as claimed in claim 1, it is characterised in that the matter of the powder
Measuring fraction is：WC powder 93~96%, TiC powder 2~4%, TaC powder 1~3%.
3. a kind of preparation method of non-bond cemented carbide as claimed in claim 1, it is characterised in that binder is stone
Wax, adds weight as the 2~5% of powder raw material weight.
4. a kind of preparation method of non-bond cemented carbide as claimed in claim 1, it is characterised in that mill during ball milling is situated between
Ball is sintered carbide ball, and decentralized medium is acetone；Ball material weight ratio is 3：1, solid-liquid volume ratio is 1：5, Ball-milling Time for 50~
80h。
5. a kind of preparation method of non-bond cemented carbide as claimed in claim 1, it is characterised in that molding is pressed into
Type pressure is 180MPa.
A kind of 6. preparation method of non-bond cemented carbide as claimed in claim 1, it is characterised in that the burning of vacuum-sintering
Junction temperature is 1600~1700 DEG C, and soaking time is 40~90min.
A kind of 7. preparation method of non-bond cemented carbide as claimed in claim 1, it is characterised in that HIP sintering
Sintering temperature be 1400~1500 DEG C, pressure is 80~150MPa, and soaking time is 40~90min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711388925.8A CN108033790A (en) | 2017-12-21 | 2017-12-21 | A kind of preparation method of non-bond cemented carbide |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711388925.8A CN108033790A (en) | 2017-12-21 | 2017-12-21 | A kind of preparation method of non-bond cemented carbide |
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| CN108033790A true CN108033790A (en) | 2018-05-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109434122A (en) * | 2018-12-04 | 2019-03-08 | 燕山大学 | Without metallic binding phase Talide composite material and preparation method |
| CN109437908A (en) * | 2018-11-13 | 2019-03-08 | 长沙百川超硬材料工具有限公司 | A kind of high thermohardening hard alloy and preparation method thereof |
| CN111646800A (en) * | 2020-05-13 | 2020-09-11 | 株洲天成金属激光高科有限公司 | Preparation process of binderless fully-compact titanium carbide sectional material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1609053A (en) * | 2004-11-11 | 2005-04-27 | 上海交通大学 | Sintering process of superfine pure WC without adhering phase |
| CN103924144A (en) * | 2014-04-09 | 2014-07-16 | 中南大学 | Preparation method of unbonded-phase ultrafine WC hard alloy |
| CN107459353A (en) * | 2017-07-04 | 2017-12-12 | 江苏大学 | A kind of method of VC, TiC enhancing soap-free emulsion polymeization phase WC base cemented carbide performances |
-
2017
- 2017-12-21 CN CN201711388925.8A patent/CN108033790A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1609053A (en) * | 2004-11-11 | 2005-04-27 | 上海交通大学 | Sintering process of superfine pure WC without adhering phase |
| CN103924144A (en) * | 2014-04-09 | 2014-07-16 | 中南大学 | Preparation method of unbonded-phase ultrafine WC hard alloy |
| CN107459353A (en) * | 2017-07-04 | 2017-12-12 | 江苏大学 | A kind of method of VC, TiC enhancing soap-free emulsion polymeization phase WC base cemented carbide performances |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109437908A (en) * | 2018-11-13 | 2019-03-08 | 长沙百川超硬材料工具有限公司 | A kind of high thermohardening hard alloy and preparation method thereof |
| CN109437908B (en) * | 2018-11-13 | 2021-07-30 | 长沙百川超硬材料工具有限公司 | High-hot-hardness hard alloy and preparation method thereof |
| CN109434122A (en) * | 2018-12-04 | 2019-03-08 | 燕山大学 | Without metallic binding phase Talide composite material and preparation method |
| CN111646800A (en) * | 2020-05-13 | 2020-09-11 | 株洲天成金属激光高科有限公司 | Preparation process of binderless fully-compact titanium carbide sectional material |
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