CN102389922A - Nickel-based superheat-resisting alloy stamping mould with self-lubricating coating - Google Patents
Nickel-based superheat-resisting alloy stamping mould with self-lubricating coating Download PDFInfo
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- CN102389922A CN102389922A CN2011101616178A CN201110161617A CN102389922A CN 102389922 A CN102389922 A CN 102389922A CN 2011101616178 A CN2011101616178 A CN 2011101616178A CN 201110161617 A CN201110161617 A CN 201110161617A CN 102389922 A CN102389922 A CN 102389922A
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Abstract
The invention provides a nickel-based superheat-resisting mould with a self-lubricating function. A layer structure is formed by the following steps of: taking a nickel-based superheat-resisting mould as a base; applying a middle transition layer on the baser, wherein the middle transition layer is a NiCrAlY coating; applying a barrier layer on the middle transition layer, wherein the barrier layer is a TiN or TaN coating; and applying a coating with the self-lubricating function on the barrier layer, wherein the coating with the self-lubricating function comprises BN. By adopting the mould of the structure, disclosed by the invention, the service life of the mould can be prolonged, and the service performance of the mould can be improved.
Description
Technical field
The present invention relates to a kind of diel, in particular, relate to a kind of nickel-base heat resisting superalloy diel with self-lubricating coat in use.
Background technology
Mould is widely used in punch forming processing.Generally need have following performance for stamping forming mould:
(1) under the hot environment, has good rigidity, anti-mechanical impact strength and high hardness.
(2) repeatedly and under the thermal shock of Fast Heating cooling, mould does not crack or is out of shape.
(3) under the hot conditions, chemical reaction does not take place in molding surface and forming metal.
(4) the high-temperature oxydation phenomenon can not take place in mould under hot conditions.
(5) good processability, the surface that is prone to be processed into high accuracy and high surface finish.
Traditional mould that is used to pour into a mould materials such as refractory metal or glass adopts stainless steel or Refractoloy steel as mold materials mostly; But high-temperature oxydation takes place in this mould easily; Under thermal cycle effect repeatedly; The inside crystal phase structure of material changes, and also variation of surface quality, thereby causes mould to lose efficacy easily.
In order to address the above problem, the metal oxide ceramic particle of hard and superhard alloy are used to mfg. moulding die.But, be difficult to be processed into required given shape because described material hardness is very high.So with superhard alloy or high-temperature alloy is die matrix, the composite construction mould that forms wear-resisting, high-temperature corrosion resistance on its surface or have a coating of other property becomes the new direction of industry development.
Summary of the invention
The object of the present invention is to provide a kind of nickel-base heat resisting superalloy diel with self-lubricating function, this diel can be used for improving the molding performance of mould and the service life of this mould of significant prolongation.
The present invention has adopted following technical scheme for this reason: a kind of Ni-based ultra heat-resisting mould with self-lubricating function, and it has with understructure:
(1) a kind of nickel-base heat resisting superalloy diel is as substrate;
(2) put on suprabasil intermediate layer, described intermediate layer is the NiCrAlY coating;
(3) put on barrier layer on the intermediate layer, described barrier layer is TiN or TaN coating;
(4) put on the coating with self-lubricating function on the barrier layer, described self-lubricating function coating comprises BN.
Wherein, The composition of described nickel-base heat resisting superalloy and composition are: the Ni of Cr:10-20wt%, Al or Ti:2-8wt%, B or C:0.1-12wt%, Mo or Nb or W or Ta or Fe:0.1-12wt% and surplus and unavoidable impurities; Wherein the total content of unavoidable impurities is lower than 0.15wt%, and each mass percentage content of impurity element all is lower than 0.05wt%.
Wherein, in the described NiCrAlY coating, the mass fraction of Ni is: 75-83.5wt%, the mass fraction of Cr is: 8-15wt%, the mass fraction of Al are the Y of 2.5-7.5wt% and surplus.
Wherein, in the self-lubricating function coating, nitrogen boron: 45-78wt%, boracic: 22-55wt%.
Wherein, the thickness of intermediate layer is 5um-100um, and preferably its thickness is 5um-20um.
Wherein, the thickness on barrier layer is 10um-50um, and preferably its thickness is 10um-25um.
Wherein, the thickness of self-lubricating coat in use is 500um-5mm, and preferably its thickness is 2mm-5mm.
The method that can spray forms the NiCrAlY coating, and annealing forms intermediate layer under protective atmosphere then.Described protective atmosphere annealing is meant vacuum annealing or inert atmosphere annealing or reducing atmosphere annealing, and described protective gas can be selected from by N
2, Ar, H
2In the group that perhaps their combination in any is formed.
Wherein, can use the method for solid state diffusion to form the barrier layer, promptly, in nitrogen containing atmosphere, anneal then, form TiN or TaN coating at first oozing titanium or tantalum through powder solid or liquid.
Wherein, the face coat of self-lubricating function forms through the powder of spraying nitrogen boron and boron.During spraying, its technological parameter is: operating voltage: 25-40V; Spray distance is: 100-250mm; Air pressure is 0.5-0.9MPa.The thickness of self-lubricating coat in use is 500um-5mm, and preferably its thickness is 2mm-5mm.
Use the intermediate layer can prevent that basalis is in high temperature casting cycle generation high-temperature oxydation phenomenon; Also strengthened the adhesion strength between substrate and the coating in addition; Use the barrier layer to prevent that inner metal level (basalis and NiCrAlY alloy-layer) is through diffusion; Metallic atom wherein diffuses in the self-lubricating function coating on surface, the self-lubricating function of infringement self-lubricating function coating.
Ni-based ultra heat-resisting mould through method preparation of the present invention; Have NiCrAlY intermediate layer, TiN or TaN barrier layer and contain the boron nitride coating of boron; Because setting adjacent one another are and atomic structure are roughly close between substrate and the coating; Therefore, adjacent coating can be because of problems such as atom defects, produces internal stress and causes the problem of bad adhesion between the coating; Through coating structure of the present invention design, intermediate layer and barrier layer can increase the boron nitride coating that contains boron and substrate between Ni-based ultra heat-resisting mould between cohesive force.And, in the self-lubricating coat in use of the present invention, except boron nitride, also have the boron of specific quantity as the hard phase, can reduce the internal stress and the coefficient of friction thereof of face coat.Therefore, adopt the mould of the said structure of the application, can increase the service life and the serviceability thereof of mould.
The specific embodiment
Below will make further explanation to technical scheme of the present invention through typical embodiment.The applicant it is emphasized that following examples only are the needs for the content that specifies invention, and can not think limitation of the present invention.The present invention requires the scope protected, is as the criterion with the technical scheme that claims were limited.
Embodiment 1
Mould 1:
Ground floor: nickel-base heat resisting superalloy diel substrate, the composition of wherein said nickel-base heat resisting superalloy and composition are: the Ni of Cr:10wt%, Ti:5wt%, B:2wt%, Mo:8wt% and surplus and unavoidable impurities.
The second layer: the NiCrAlY intermediate layer, the mass fraction of Ni is: 75wt%, the mass fraction of Cr is: 15wt%, the mass fraction of Al are the Y of 7.5wt% and surplus.The thickness of NiCrAlY intermediate layer is 5um.
The 3rd layer: TaN barrier layer, the thickness on TaN barrier layer are 15um.
The 4th layer: self-lubricating function coating, nitrogen boron: 70wt% wherein, boracic: 30wt%.The thickness of self-lubricating function coating is 1mm.
Embodiment 2
Mould 2:
Ground floor: nickel-base heat resisting superalloy diel substrate, the composition of wherein said nickel-base heat resisting superalloy and composition are: the Ni of Cr:12wt%, Al:5wt%, C:5wt%, Mo:8wt% and surplus and unavoidable impurities.
The second layer: the NiCrAlY intermediate layer, the mass fraction of Ni is: 78wt%, the mass fraction of Cr is: 10wt%, the mass fraction of Al are the Y of 7.5wt% and surplus.The thickness of NiCrAlY intermediate layer is 10um.
The 3rd layer: TiN barrier layer, the thickness on TiN barrier layer are 10um.
The 4th layer: self-lubricating function coating, nitrogen boron: 62wt% wherein, boracic: 38wt%.The thickness of self-lubricating function coating is 0.5mm.
Embodiment 3
Mould 3:
Ground floor: nickel-base heat resisting superalloy diel substrate, the composition of wherein said nickel-base heat resisting superalloy and composition are: the Ni of Cr:13wt%, Ti:7wt%, B:5wt%, Mo:10wt% and surplus and unavoidable impurities.
The second layer: the NiCrAlY intermediate layer, the mass fraction of Ni is: 79wt%, the mass fraction of Cr is: 14wt%, the mass fraction of Al are the Y of 4.5wt% and surplus.The thickness of NiCrAlY intermediate layer is 15um.
The 3rd layer: TaN barrier layer, the thickness on TaN barrier layer are 15um.
The 4th layer: self-lubricating function coating, nitrogen boron: 65wt% wherein, boracic: 35wt%.The thickness of self-lubricating function coating is 1.5mm.
Embodiment 4
Mould 4:
Ground floor: nickel-base heat resisting superalloy diel substrate, the composition of wherein said nickel-base heat resisting superalloy and composition are: the Ni of Cr:16wt%, Al:4wt%, B:5wt%, Mo:10wt% and surplus and unavoidable impurities.
The second layer: the NiCrAlY intermediate layer, the mass fraction of Ni is: 81wt%, the mass fraction of Cr is: 13wt%, the mass fraction of Al are the Y of 3.5wt% and surplus.The thickness of NiCrAlY intermediate layer is 20um.
The 3rd layer: TiN barrier layer, the thickness on TiN barrier layer are 20um.
The 4th layer: self-lubricating function coating, nitrogen boron: 72wt% wherein, boracic: 28wt%.The thickness of self-lubricating function coating is 2.0mm.
Embodiment 5
Mould 5:
Ground floor: nickel-base heat resisting superalloy diel substrate, the composition of wherein said nickel-base heat resisting superalloy and composition are: the Ni of Cr:18wt%, Ti:2wt%, C:5wt%, Fe:12wt% and surplus and unavoidable impurities.
The second layer: the NiCrAlY intermediate layer, the mass fraction of Ni is: 82wt%, the mass fraction of Cr is: 12wt%, the mass fraction of Al are the Y of 4.5wt% and surplus.The thickness of NiCrAlY intermediate layer is 25um.
The 3rd layer: TaN barrier layer, the thickness on TaN barrier layer are 25um.
The 4th layer: self-lubricating function coating, nitrogen boron: 78wt% wherein, boracic: 22wt%.The thickness of self-lubricating function coating is 2.5mm.
Embodiment 6
Mould 6:
Ground floor: nickel-base heat resisting superalloy diel substrate, the composition of wherein said nickel-base heat resisting superalloy and composition are: the Ni of Cr:20wt%, Ti:5wt%, C:2wt%, Mo:8wt% and surplus and unavoidable impurities.
The second layer: the NiCrAlY intermediate layer, the mass fraction of Ni is: 83.5wt%, the mass fraction of Cr is: 8wt%, the mass fraction of Al are the Y of 7.0wt% and surplus.The thickness of NiCrAlY intermediate layer is 25um.
The 3rd layer: TaN barrier layer, the thickness on TaN barrier layer are 25um.
The 4th layer: self-lubricating function coating, nitrogen boron: 63wt% wherein, boracic: 37wt%.The thickness of self-lubricating function coating is 3mm.
Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art is when making various corresponding different dies by summary of the invention according to the present invention; For example through changing known painting method and/or adjust the component and the content of each coating and matrix, but these change and are out of shape the protection domain that resulting mould all should belong to the appended claim of the present invention accordingly.
Claims (10)
1. nickel-base heat resisting superalloy mould with self-lubricating function, it has with understructure:
(1) a kind of nickel-base heat resisting superalloy mould is as substrate;
(2) put on suprabasil intermediate layer, described intermediate layer is the NiCrAlY coating;
(3) put on barrier layer on the intermediate layer, described barrier layer is TiN or TaN coating;
(4) put on self-lubricating function coating on the barrier layer, described self-lubricating function coating comprises BN.
2. the described Ni-based ultra heat-resisting mould of claim 1, it is characterized in that the mass fraction of Ni is in the described NiCrAlY coating: 75-83.5wt%, the mass fraction of Cr is: 8-15wt%, the mass fraction of Al are the Y of 2.5-7.5wt% and surplus.
3. the described Ni-based ultra heat-resisting mould of claim 1 is characterized in that in the wherein said powder nitrogen boron: 45-78wt%, boracic: 22-55wt%.
4. the described Ni-based ultra heat-resisting mould of claim 1, the thickness that it is characterized in that described intermediate layer is 5um-100um.
5. the described Ni-based ultra heat-resisting mould of claim 5, the thickness that it is characterized in that described intermediate layer is 5um-20um.
6. the described Ni-based ultra heat-resisting mould of claim 1, the thickness that it is characterized in that described barrier layer is 10um-50um.
7. the described Ni-based ultra heat-resisting mould of claim 6, the thickness that it is characterized in that described barrier layer is 10um-25um.
8. the described Ni-based ultra heat-resisting mould of claim 1, the thickness that it is characterized in that described self-lubricating function coating is 100um-5mm.
9. the described Ni-based ultra heat-resisting mould of claim 6, the thickness that it is characterized in that described self-lubricating function coating is 2mm-5mm.
10. the described Ni-based ultra heat-resisting mould of claim 1; The composition and the composition that it is characterized in that described nickel-base heat resisting superalloy are: the Ni of Cr:10-20wt%, Al or Ti:2-8wt%, B or C:0.1-12wt%, Mo or Nb or W or Ta or Fe:0.1-12wt% and surplus and unavoidable impurities; Wherein the total content of unavoidable impurities is lower than 0.15wt%, and each mass percentage content of impurity element all is lower than 0.05wt%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101616178A CN102389922A (en) | 2011-06-16 | 2011-06-16 | Nickel-based superheat-resisting alloy stamping mould with self-lubricating coating |
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|---|---|---|---|
| CN2011101616178A CN102389922A (en) | 2011-06-16 | 2011-06-16 | Nickel-based superheat-resisting alloy stamping mould with self-lubricating coating |
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| CN102389922A true CN102389922A (en) | 2012-03-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107116138A (en) * | 2017-04-18 | 2017-09-01 | 武汉理工大学 | Self-lubricating dissimilar materials mould for high strength steel plate drop stamping and preparation method thereof |
| CN114589819A (en) * | 2020-12-07 | 2022-06-07 | Oppo广东移动通信有限公司 | Hot bending die and preparation method thereof, curved ceramic part and electronic equipment |
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| CN1653867A (en) * | 2002-05-08 | 2005-08-10 | 达纳公司 | Plasma-assisted coating |
| US20060286401A1 (en) * | 2005-04-01 | 2006-12-21 | Siemens Aktiengesellschaft | Layer system |
| CN101168312A (en) * | 2006-10-27 | 2008-04-30 | 河南富耐克超硬材料有限公司 | Ultra-hard complex with hard alloy sandwich |
| CN101698362A (en) * | 2009-10-30 | 2010-04-28 | 华南理工大学 | Self-lubricating hard nanocomposite laminated coating and preparation method thereof |
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2011
- 2011-06-16 CN CN2011101616178A patent/CN102389922A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1653867A (en) * | 2002-05-08 | 2005-08-10 | 达纳公司 | Plasma-assisted coating |
| US20060286401A1 (en) * | 2005-04-01 | 2006-12-21 | Siemens Aktiengesellschaft | Layer system |
| CN101168312A (en) * | 2006-10-27 | 2008-04-30 | 河南富耐克超硬材料有限公司 | Ultra-hard complex with hard alloy sandwich |
| CN101698362A (en) * | 2009-10-30 | 2010-04-28 | 华南理工大学 | Self-lubricating hard nanocomposite laminated coating and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107116138A (en) * | 2017-04-18 | 2017-09-01 | 武汉理工大学 | Self-lubricating dissimilar materials mould for high strength steel plate drop stamping and preparation method thereof |
| CN107116138B (en) * | 2017-04-18 | 2019-08-27 | 武汉理工大学 | Self-lubricating dissimilar materials mold and preparation method thereof for high strength steel plate drop stamping |
| CN114589819A (en) * | 2020-12-07 | 2022-06-07 | Oppo广东移动通信有限公司 | Hot bending die and preparation method thereof, curved ceramic part and electronic equipment |
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Application publication date: 20120328 |