CN101020982A - Substrate for hard alloy in composite structure - Google Patents
Substrate for hard alloy in composite structure Download PDFInfo
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- CN101020982A CN101020982A CN 200610022524 CN200610022524A CN101020982A CN 101020982 A CN101020982 A CN 101020982A CN 200610022524 CN200610022524 CN 200610022524 CN 200610022524 A CN200610022524 A CN 200610022524A CN 101020982 A CN101020982 A CN 101020982A
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Abstract
The present invention discloses one kind of composite structure hard alloy with TiC as the hard phase, and belongs to the field of hard alloy material preparing technology. The composite structure hard alloy consists of hard phase of TiC and binding phase of Ni complex in the weight ratio of 60-80 to 20-40. The composite structure hard alloy has no W in the hard phase and no Co in the binding phase, and is saving in W and Co resource. It has less faults, high comprehensive performance and wide application similar to that of hard alloy in single layer structure.
Description
Technical field
The invention belongs to the Hardmetal materials preparation field, it is the matrix that hard is used for the continuous interfacial composite structure hard alloy mutually that a kind of following TiC particularly is provided.
Background technology
Normally used Wimet is a single layer structure, (as Co, Co+Ni etc.) form its composition with boning mutually by hard phase (as WC, WC-TiC etc.), this single layer structure is the integral body that is formed a continuous transition by the key interaction of bonding phase metallic molecule, has characteristics such as application is wide, good combination property.Wimet in actual use, the use position that is used for processing work and is consumed only accounts for the very little part of whole Wimet volume, this part is called uses layer, the non-use position of playing a lining effect and making Wimet have the integral body of definite shape size accounts for whole hard alloy volume major part, and this part is called matrix.The single layer structure Wimet need consume a large amount of W, Co resource, W, Co scarcity of resources and costliness, particularly W resource and tend to exhausted, and how to produce Wimet with W, Co resource less is the problem that will press for solution future.Using layer performance if employing by reducing W, the Co consumption in the single layer structure Wimet, will have influence on, promptly influence the Wimet quality, therefore, is invalid by this approach saving W, Co resource.
In order to save W, Co resource, a large amount of composite structure hard alloys are able to tremendous development, composite structure hard alloy is to adopt the use layer of heterogeneity and matrix to carry out compound and whole hard alloy that form, it does not change uses composition of layer (identical with former single layer structure Wimet), use layer performance unaffected, and because matrix is non-use position, in matrix, reduce or without W, Co resource, just can reach and save W, Co resource, and not influence the purpose of Wimet service requirements.
But, the quality critical of composite structure hard alloy is matrix and the interface binding mechanism that uses layer, influence matrix and use layer combine generally to have following two aspects: the one, matrix causes combining bad greatly with the property difference that uses layer: conventional now is that employing is easy to acquisition, and the steel that cost is low, steel alloy, Steel Bond Hard Alloy etc. less or do not have a W, the material of Co is as matrix, but owing to these matrixes is to be the alloy that main other element of interpolation or compound form with Fe, with be that main to add the Wimet component difference that bonding forms mutually big mutually by hard, cause matrix and Wimet to use the property difference of layer big, most important property difference shows thermal expansivity and the Young's modulus between matrix and the use layer, test shows, when the thermal expansivity of matrix when using layer, form tensile stress in the matrix, this tensile stress produces the crackle of vertical interface on matrix, the residual tension on matrix top layer is unfavorable to material property; When the thermal expansivity that uses layer during greater than matrix, in matrix, form residual compressive stress, help improving the physical and mechanical properties of matrix, if but the two thermal expansion coefficient difference is big, just cause the interface cracking easily, or in using layer, produce the crackle of vertical interface.In addition, because matrix and use the Young's modulus of layer different, one deck that Young's modulus is big bears more load, so also causes unbalance stress easily and produces the phenomenon that the use pull-up falls.Two are to use layer and matrix to have binding deficient: generally speaking, matrix and use layer have formed blank, therefore, two kinds of materials can only be by welding, bonding, the machinery clamping, modes such as spraying are carried out compound, these complex methods are certainly existing the third class material at the interface, as the Cu scolder, colloid, air etc. are as transition layer, its compound interface is non-continuous transition, there is obvious defects at the interface, as the third class material, slit etc., because the existence of boundary defect, the Wimet of this type of composite structure use layer to come off easily, crackle, layering, the application scenario that more can not bear large impact.
In the patent No. is 98122105x, denomination of invention is in the patent documentation of " pottery---carbide compound cutter and technology thereof ", a kind of Wimet is disclosed as matrix, use the composite blade of layer as nonmetallic ceramics, it mainly is a high rigidity of having utilized nonmetallic ceramics, high-wearing feature, characteristic such as high heat resistance and high chemical stability, be aided with hot pressed sintering and get method, to improve its fracture toughness property and bending strength, but the essence of hard alloy substrate described in the document is a kind of sintering metal (TiC+Ni), and it uses a layer Hardmetal materials that is not employing, so still there is the big defective of property difference of matrix and use layer, though the method that is provided by this patent may obtain the composite structure tool ceramics of continuous interfacial, this product only adapts to the Application Areas of the nonmetallic ceramics cutting tool of minimum impact occasion.
Though the above matrix that provides has reached saving W, Co resource purpose, but its formed composite structure product interface is non-continuous transition, perhaps formed composite structure product interface is a continuous transition, but obtaining composite structure product is the tool ceramics that can only bear minimum impact use occasion, all can not satisfy with conventional single layer structure Wimet and use identical requirement wide, good combination property.
Summary of the invention
The objective of the invention is to overcome the shortcoming of above-mentioned prior art and provide a kind of and can use the matrix at layer formation continuous transition interface with Wimet, the composite structure hard alloy that uses this matrix made can be applicable to the greater impact use occasion in conjunction with firm.
The object of the present invention is achieved like this:
A kind of matrix of composite structure hard alloy, by the hard bonding phase composite that is harmonious, described hard is TiC mutually, and described bonding is the mixture of Ni mutually, and their weight proportion (%) is mixture=60～80% of TiC: Ni: 40～20%;
Wherein, the mixture of described Ni is Ni+Mo, and their weight proportion (%) is Ni: Mo=70～95%: 30～5%; Or Ni+Mo
2C, their weight proportion (%) is Ni: Mo
2C=70～95%: 30～5%; Or Ni+Fe, their weight proportion (%) is Ni: Fe=20～70%: 80～30%.
Matrix of the present invention is compared as follows table 1 with the character of using layer:
| Matrix | Use layer | ||||
| One-tenth is grouped into | The mixture of hard phase TiC+ bonding phase Ni | One-tenth is grouped into | Hard phase WC (or WC-TiC etc.)+bonding phase C o(or Co+Ni) | ||
| Hard phase TiC | Title | The infusibility hard carbide | Hard phase WC or WC-TiC etc. | Title | The infusibility hard carbide |
| Fusing point | 3250℃ | Fusing point | 2600～3250℃ | ||
| Show hard mired | 2850～3200 (kilogram/millimeters 2) | Show hard mired | 1730 (kilogram/millimeters 2) | ||
| Bonding phase Ni mixture | Purposes | The Wimet binding agent | Bonding phase Co | Purposes | The Wimet binding agent |
| Periodic table of chemical element position | VIIIFe family element | Periodic table of chemical element position | VIIIFe family element | ||
| Fusing point | Ni：1453℃， Fe：1534℃ | Fusing point | Co：1490℃ | ||
| To the carbide wettability | 1450 ℃, Ni is to 17～30 ℃ 1550 ℃ of TiC angle of wettings, and Fe is to 41-49 ℃ of TiC angle of wetting | To the carbide wettability | 1420 ℃, Co is to 0～21 ℃ of WC or WC-TiC angle of wetting | ||
| Form chemicals | Chemical formula | TiC-Ni (or TiC-Ni-Fe) | Form chemicals | Chemical formula | WC-Co or WC-TiC-Co |
| Title | Titanium carbide base hard alloy | Title | The tungstenic Wimet | ||
The Wimet constituent class of matrix composition of the present invention and use layer seemingly, also by hard phase (TiC) with the bonding mutually (mixture of Ni) form, in order to guarantee that matrix has enough bending strengths (or toughness), thereby make composite structure hard alloy satisfy service requirements, need to add the mixture of high-content (〉=20%) bonding phase Ni.Hard phase (TiC) and bonding mutually (mixture of Ni) by certain percentage example preparation after, sent into ball mill interior wet-milling 16-24 hour, routinely the powder metallurgical production technique discharging of Wimet, drying, mix glue, sieve, make the matrix compound, separating weighing with a use layer carbide alloy mixture again feeds in raw material, layering is packed in the mould, a press forming, the pressed compact of being suppressed places sintering oven with the disposable sintering of stove equality of temperature, thereby acquisition is the continuous interfacial composite structure hard alloy of the matrix of hard phase with TiC.
The present invention because: the hard in (1) matrix does not contain W for TiC mutually, and bonding reaches the purpose of saving W, Co resource mutually for the mixture of Ni does not contain Co; (2) contain higher bonding phase (〉=20%) in the matrix, obtain, make composite structure hard alloy can satisfy wide service requirements, can be applicable to fields such as blade, wearing piece, mine instrument than high-flexural strength (or toughness); (3) contain Mo or Mo in the mixture of bonding phase Ni in the matrix
2C helps improving bonding phase angle of wetting, produces porosity behind the minimizing sintering, further improves matrix bending strength (or toughness), contains Fe in the mixture of bonding phase Ni, helps further reducing raw materials cost; (4) the matrix composition with use layer Wimet constituent class seemingly, thereby make matrix can be achieved at the Wimet that forms composite structure with the disposable sintering of stove equality of temperature with using layer.Co's mixture of the bond matrix phase Ni that character is close combines with intermolecular bonding force with using layer to bond mutually, make the compound interface continuous transition, can not produce bad defectives such as foreign matter, slit and decarburization, crackle, layering, reach and any the same firm effect of single layer structure Wimet, obtain to use identical characteristic wide, good combination property with conventional single layer structure Wimet.In order to demonstrate,prove relevant performance of the present invention, the spy does following simultaneous test checking, at the 70%TiC-25%-5Mo alloy of the compound 1.5mmYG6X of matrix surface of the present invention, with the bending strength of individual layer YG6X alloy and fracture mode to such as table 2:
The bending strength of the 70%TiC-25%Ni-5%Mo alloy of the table 2 compound 1.5mmYG6X in top layer of the present invention and individual layer YG6X alloy and fracture mode contrast table
| The sample title | Quantity (propping up) | Bending strength mean value (N/mm 2) | Fracture mode | Conclusion |
| The B sample of the 70%TiC-25%Ni-5%Mo alloy of composite Y G6X of the present invention | 10 | 1638 | Transverse breakage | The YG6X composite structure hard alloy is identical in conjunction with effect with single layer structure YN6X Wimet |
| Individual layer Y66X Wimet B sample | 10 | 1655 | Transverse breakage |
As seen, to combine effect basic identical for the 1.5mm YG6X Wimet of composite structure and single layer structure YG6X Wimet.
Embodiment
Embodiment 1:
Present embodiment is an example with the matrix that preparation is used for YG6X composite structure hard alloy wear ring:
Matrix composition: TiC+Ni+Mo, matrix percentage composition: TiC/Ni+Mo=80%/20%, Ni/Mo=83%/17%; Preparation 100kg matrix: TiC=80kg, Ni+Mo=20kg, Ni=16.6kg wherein, Mo=3.4kg, send into the interior wet-milling of ball mill 16 hours, routinely the powder metallurgical production technique discharging of Wimet, drying, mix glue, sieve, make the matrix compound and to use a layer YG6X carbide alloy mixture to separate weighing reinforced, the layering press forming in the mould of packing into, the pressed compact of being suppressed places and burns stove with the disposable sintering of stove equality of temperature, and obtaining with TiC is the continuous interfacial composite structure hard alloy matrix of hard phase.
Embodiment 2:
Present embodiment is an example with the matrix that preparation is used for YT15 composite structure hard alloy clamped cutting bit sheet:
Matrix composition: TiC+Ni+Mo2C; Matrix percentage composition: TiC/Ni+Mo
2C=60%/40%, Ni/Mo
2C=72%/28%; Preparation 100kg matrix: TiC=60kg, Ni+Mo
2C=40kg, wherein Ni=28.8kg Mo
2C=11.2kg sends into the interior wet-milling of ball mill 20 hours, and making with TiC by the method among the embodiment 1 is the continuous interfacial composite structure hard alloy matrix of hard phase.
Embodiment 3:
It is example that present embodiment is used for YG8 composite structure hard alloy nozzle with preparation: matrix composition: TiC+Ni+Fe; Matrix becomes per-cent: TiC/Ni+Fe=75%/25%, wherein Ni/Fe=25%/75%; Preparation 100kg matrix: TiC:75kg, Ni+Fe:25kg, wherein Ni=6.25kg Fe=18.75kg), send into the interior wet-milling of ball mill 24 hours, making with TiC by the method among the embodiment 1 is the continuous interfacial composite structure hard alloy matrix of hard phase.
Claims (5)
1, a kind of matrix that is used for composite structure hard alloy, by the hard bonding phase composite that is harmonious, it is characterized in that described hard is TiC mutually, described bonding is the mixture of Ni mutually, and their weight proportion is mixture=60～80% of TiC: Ni: 40～20%.
2, matrix according to claim 1, the mixture that it is characterized in that described Ni are Ni+Mo or Ni+Mo
2Wherein a kind of of C or Ni+Fe.
3, matrix according to claim 2, the mixture that it is characterized in that Ni is Ni+Mo, their weight proportion is Ni: Mo=70～95%: 30～5%.
4, matrix according to claim 2, the mixture that it is characterized in that Ni is Ni+Mo
2C, their weight proportion are Ni: Mo
2C=70～95%: 30～5%.
5, matrix according to claim 2, the mixture that it is characterized in that Ni is Ni+Fe, their weight proportion (%) is Ni: Fe=20～70%: 80～30%.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101851719A (en) * | 2010-06-09 | 2010-10-06 | 无锡爱斯特陶瓷复合材料有限公司 | Nickel base titanium carbide metal ceramic self-lubricating high-abrasive material |
| CN109513935A (en) * | 2018-11-20 | 2019-03-26 | 河源粤奥硬质合金有限公司 | A kind of titanium-base alloy cutter material and preparation method thereof |
| CN109518059A (en) * | 2018-10-23 | 2019-03-26 | 株洲三鑫硬质合金生产有限公司 | A kind of TiC-Fe-Ni-Cu-Mo2C cermet and preparation method thereof |
-
2006
- 2006-12-14 CN CN 200610022524 patent/CN101020982A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101851719A (en) * | 2010-06-09 | 2010-10-06 | 无锡爱斯特陶瓷复合材料有限公司 | Nickel base titanium carbide metal ceramic self-lubricating high-abrasive material |
| CN109518059A (en) * | 2018-10-23 | 2019-03-26 | 株洲三鑫硬质合金生产有限公司 | A kind of TiC-Fe-Ni-Cu-Mo2C cermet and preparation method thereof |
| CN109513935A (en) * | 2018-11-20 | 2019-03-26 | 河源粤奥硬质合金有限公司 | A kind of titanium-base alloy cutter material and preparation method thereof |
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