CN202322973U - Superhigh-temperature forming die - Google Patents
Superhigh-temperature forming die Download PDFInfo
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- CN202322973U CN202322973U CN2011204799674U CN201120479967U CN202322973U CN 202322973 U CN202322973 U CN 202322973U CN 2011204799674 U CN2011204799674 U CN 2011204799674U CN 201120479967 U CN201120479967 U CN 201120479967U CN 202322973 U CN202322973 U CN 202322973U
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- thermal barrier
- metal base
- temperature
- temperature forming
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Abstract
The utility model discloses a superhigh-temperature forming die. The superhigh-temperature forming die comprises a metal base material substrate, a bonding layer and a thermal barrier layer, wherein the metal base material substrate is provided with a work surface; the bonding layer is sprayed on the work surface of the metal base material substrate; and the thermal barrier layer is sprayed on the bonding layer. The bonding layer and the thermal barrier layer are sprayed on the metal base material substrate, so the superhigh-temperature forming die has high strength and toughness. Due to the thermal barrier layer, the superhigh-temperature forming die has high high-temperature resistance, wear resistance, oxidation resistance and heat-insulating performance and can be applicable to various superhigh temperature forming work conditions of the high-melting-point metal forming temperature reaching above 1,000 DEG C. Compared with the process of processing hard alloy formed by sintering in the prior art, the metal base material substrate forming complex cavity is simple and easy to form.
Description
Technical field
The utility model relates to the metal molding die technical field, in particular to a kind of ultrahigh-temperature forming mould.
Background technology
Refractory metal (ferrous metal, copper alloy and stainless steel etc.) is widely used in industrial every field.The refractory metal hot-forming temperature is usually more than 1000 ℃, and is very high to the high-temperature mechanical property requirement of moulding stock.Under ultrahigh-temperature moulding operating mode; Adopt any high-performance special material all can't satisfy the needed high temperature toughness and tenacity of mould, high-temperature wear behavior, cold and hot fatigue property and high temperature erosion performance simultaneously, extremely low die life has limited applying of ultrahigh-temperature forming technique.
Prior art research shows; Compare with conventional moulding stock; The ultrahigh-temperature forming mould of HMP molybdenum base alloy, tungsten-bast alloy and ceramic material, die life improves, but improves not remarkable; Add the scarcity of material price costliness and tungstenalloy resource, seriously restrict its popularization and application.At present, still there is not a kind of moulding stock can satisfy the practical application request of ultrahigh-temperature forming mould fully both at home and abroad.
It is substrate that Chinese patent " method for preparing wire drawing mold with diamond compoiste coating " (patent No. ZL01113027.X) and Chinese patent " silicon carbide ceramics and method for manufacturing composite drawing mould of diamond " (patent No. ZL200810040138.9) propose with wide aperture sintered-carbide die and silicon carbide ceramics mould respectively; Deposit conventional diamond and Nano diamond compound coating with chemical gas-phase method at the mould bore surface; Process the diamond coatings mould, can improve more than mold work life-span 5-10 times.But wimet and stupalith all adopt sinter molding, and its intensity and toughness are lower, and are difficult to the mould of moulding complex-shaped surface mould; Can not satisfy of the requirement of pressure forming mould, because the depositing time that adopts the chemical gas-phase method deposition of diamond coatings existed low shortcoming of production efficiency and the high pressure of manufacturing cost more than at least 6 hours to toughness and tenacity and moulding complicated shape part; Be heated to 1000 ℃; Diamond can slowly become graphite, and the diamond thermal conductivity is high, is generally 136.16W/ (mK); Can't effectively hinder the molten metal temperature conduction and give die matrix, not be suitable for the ultrahigh-temperature forming mould.Further ultrahigh-temperature forming mould and preparation method thereof is not found in retrieval as yet.
The utility model content
The utility model aims to provide a kind of ultrahigh-temperature forming mould, to solve ultrahigh-temperature forming mould intensity of the prior art and toughness is lower, moulding complex-shaped surface mould difficult technologies problem.
To achieve these goals, an aspect according to the utility model provides a kind of ultrahigh-temperature forming mould.This ultrahigh-temperature forming mould comprises: the metal base substrate has working-surface on it; Tack coat is sprayed on the working-surface of metal base substrate; And thermal barrier coatings, be sprayed on the tack coat.
Further, metal base is a kind of in hot-work die steel, the plastic die steel.
The method of the spraying of adopting in tack coat and the thermal barrier coatings forming process further, is to adopt oxygen second flame bar spraying method.
Further, the material of tack coat is a nickel-base alloy, and the thickness of the tack coat that nickel-base alloy forms is 0.05-0.1mm.
Further, the thickness of thermal barrier coatings is 0.2-0.9mm.
A kind of ultrahigh-temperature forming mould of the utility model, owing on the metal base substrate, be coated with tack coat and thermal barrier coatings, so its intensity and toughness are higher; And because the existence of thermal barrier coatings, it is high temperature resistant, wear-resistant, anti-oxidant, heat-proof quality is better, can be applicable to that various refractory metal mold temperatures reach the ultrahigh-temperature moulding operating mode more than 1000 ℃; Metal base substrate moulding complex-shaped surface mould is simple with respect to the wimet complete processing that sintering in the prior art forms, and easy-formation.
Description of drawings
Figure of description is used to provide the further understanding to the utility model, constitutes the part of the utility model, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 shows the local structure synoptic diagram according to the ultrahigh-temperature forming mould of the utility model embodiment.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment in the utility model can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the utility model.
According to a kind of typical embodiment of the utility model, this ultrahigh-temperature forming mould comprises the metal base substrate with working-surface, is sprayed on the tack coat on the working-surface of metal base substrate, and is sprayed on the thermal barrier coatings on the tack coat.Owing on the metal base substrate, be coated with tack coat and thermal barrier coatings, so its intensity and toughness are higher; And because the existence of thermal barrier coatings, it is high temperature resistant, wear-resistant, anti-oxidant, heat-proof quality is better, can be applicable to that various refractory metal mold temperatures reach the ultrahigh-temperature moulding operating mode more than 1000 ℃; Metal base substrate moulding complex-shaped surface mould is simple with respect to the wimet complete processing that sintering in the prior art forms, and easy-formation, and tooling cost is low.The ultrahigh-temperature forming mould of the utility model preparation can be widely used in refractory metal forming mould workplace instantaneous temperatures such as ferrous metal die casting (or semi-solid state) moulding, copper alloy die cast and the extruding of stainless-steel seamless pipe high temperature and high speed and reach the operating mode more than 1000 ℃; Be applied to substitute the complex-shaped surface mould mould that wimet and stupalith tool and mould product, particularly wimet and stupalith are difficult to prepare.It not only prolongs than traditional moulds work-ing life significantly; And can enhance productivity, significantly improve die quality, effectively save material; Reduce production costs; And can reduce of the dependence of ultrahigh-temperature forming mould significantly to wimet, for the consumption that reduces tungsten, cobalt resource, effectively solving cemented carbide industry, to face crisis of resource significant.
Metal base in the utility model can be to be selected from a kind of in hot-work die steel, the plastic die steel, wherein, is preferably hot-work die steel, because it has good processing properties, and the moulding of more convenient complex-shaped surface mould, and have the excellent high-temperature mechanical property.Tack coat can be in Ni-Cr alloy, the NiCrAlY alloy a kind of, this tack coat is set can alleviates the thermal dilation difference between thermal barrier coatings and the metal base substrate, improve the oxidation-resistance of metal base substrate, can improve the bonding strength of thermal barrier coatings.Preferably; The Ni-Cr alloy is that the Ni of 77-79%, Cr and the quality percentage composition that the quality percentage composition is 19-21% are formed for≤4% impurity (Fe, Mn, S, C, Si) by the quality percentage composition; Said NiCrAlY alloy is that 72.5% Ni, quality percentage composition are that 19% Cr, quality percentage composition are that 8% Al and quality percentage composition are that 0.5% Y forms by the quality percentage composition, and the Ni-Cr alloy of this kind proportioning or NiCrAlY alloy have good chemicalstability and thermostability advantage.Wherein, The thickness of the tack coat that Ni-Cr alloy or NiCrAlY alloy form is 0.05-0.1mm; This thickness can make tack coat and metal base substrate and thermal barrier coatings keep good bonding force; And reach the effect of the thermal dilation difference between good alleviation thermal barrier coatings and the metal base substrate, and thin excessively tack coat is difficult to the effect that thermal dilation difference is alleviated in performance, and blocked up tack coat peels off because of bonding force reduces easily.
According to a kind of typical embodiment of the utility model, the material of thermal barrier coatings is a ceramic coating, can be the zirconium white of stabilized with yttrium oxide or the zirconium white of stable calcium oxide, and preferably, the zirconium white of stabilized with yttrium oxide is ZrO
2(8%Y
2O
3Stable), promptly zirconic quality percentage composition is 92% in the zirconium white of stabilized with yttrium oxide, and the quality percentage composition of yttrium oxide is 8%, and the zirconium white of stable calcium oxide is ZrO
2(6%CaO is stable), promptly zirconic quality percentage composition is 94% in the zirconium white of stable calcium oxide, the quality percentage composition of quicklime is 6%.Ceramic coating has the advantage that corrosion resistance is strong, cold-and-heat resistent alternation performance (or claiming weathering resistance) obviously is superior to common coating.Preferably, the thickness of thermal barrier coatings is 0.2-0.9mm, and the thermal barrier coatings with this thickness had both reached heat insulation resistant to elevated temperatures purpose, has effectively avoided again combining undercapacity to cause the technical problem of disbonding.
A kind of ultrahigh-temperature forming mould of the utility model can prepare through following steps: make the metal base substrate, outside surface to the roughness of polishing metal base substrate is Ra25-50; Adopt the method that laterally vertically replaces thermospray successively, at the working-surface formation tack coat of metal base substrate; Adopt the method that laterally vertically replaces thermospray successively, form thermal barrier coatings basic unit on the surface of tack coat; And thermal barrier coatings basic unit is carried out grinding and polishing form thermal barrier coatings.Wherein, this tack coat is set alleviates the thermal dilation difference between thermal barrier coatings and the metal base substrate, improve the oxidation-resistance of metal base substrate, and its surfaceness is Ra25-50, can improve the bonding strength of thermal barrier coatings.In the utility model; After the metal base substrate also can be reserved coating surplus machining moulding by common process; Remove dirts such as die-face oil mark, rusty stain with the silica sand sand-blast; Forming its surfaceness is the Ra25-50 frosting, blows off this sandblast face with pressurized air, helps further improving the bonding strength of thermal barrier coatings.Compare with chemical gas-phase method, heat spraying method production efficiency is higher, production application preferably; Adopt laterally vertically the alternately method of thermospray successively, can make that coating is evenly smooth, bonding strength is high.In the utility model, can adopt diamond wheel or Buddha's warrior attendant file to thermal barrier coatings basic unit grinding and polishing, can adopt the spin finishing polishing mode.Preferably, the thickness of thermal barrier coatings basic unit is 0.3-1mm, reaches the thickness requirement of thermal barrier coatings 0.2-0.9mm through grinding and polishing.
According to a kind of typical embodiment of the utility model; Tack coat and thermal barrier coatings can pass through oxygen second flame bar spraying method, oxygen second flame powder spraying method or oxygen second flame wire spraying method and form, and preferably, the method for the thermospray of adopting in the forming process is to adopt oxygen second flame bar method to spray; This method is compared with oxygen second flame powder spraying method; Feeding is more even, and this method is compared with oxygen second flame wire spraying method, and ceramic round bar is easier to preparation than ceramic wire rod.Wherein, the oxygen pressure during thermospray is 0.4-0.6MPa, and acetylene pressure is 0.08-0.12MPa; Compressed air pressure is 0.6-0.8MPa, and spray distance is 85-100mm, diameter of rod Φ 6-8mm; Speed of feed is 160-180mm/min, and the spray gun translational speed is 90-110mm/s.
To combine embodiment to further specify the beneficial effect of the utility model below.
During copper alloy die casting, the direct ultrahigh-temperature molten state copper alloy with 1100-1200 ℃ of die casting contacts, and when copper alloy was pressed into mold cavity, die casting bore big injection power, thermal distortion and hot melt very easily takes place decrease.
Embodiment 1
Die casting local structure according to the utility model embodiment 1 are as shown in Figure 1, and the preparation process is following:
1) continues to use the original scheme of material selection of copper alloy die casting; Select for use commercially available HHD hot-work die steel to make metal base substrate 10; Press common process reserve 0.6mm as the machine-shaping of coating surplus after; Remove dirts such as die-face oil mark, rusty stain with the silica sand sand-blast, its surfaceness of polishing is the frosting of Ra25, blows off this sandblast face with pressurized air;
2) selecting commercially available Ni80Cr20 bar for use (is the Ni-Cr alloy; By the quality percentage composition is that the Ni of 77-79%, Cr and the quality percentage composition that the quality percentage composition is 19-21% are formed for≤4% impurity) be the tack coat raw material; Adopt oxygen second flame bar spraying method; Adopt the method that laterally vertically replaces thermospray successively, at the working-surface formation tack coat 20 of metal base substrate; The concrete processing parameter of thermospray is oxygen pressure 0.5MPa, acetylene pressure 0.1MPa, compressed air pressure 0.7MPa; Spray distance 90mm, diameter of rod Φ 6mm, speed of feed 178mm/min; Spray gun translational speed 100mm/s, Ni80Cr20, adhesive layer thickness is controlled at 0.07-0.09mm;
3) select commercially available composite ceramics bar ZrO for use
2(6%CaO is stable) is the thermal barrier coatings raw material, adopts identical heat spraying method and the processing parameter of spraying tack coat, at tie layer surface spraying ZrO
2(6%CaO is stable) thermal barrier coatings basic unit, gauge control with the thermal barrier coatings 30 of diamond wheel grinding and polishing to working size formation 0.51-0.53 mm, obtains the ultrahigh-temperature forming mould of the utility model embodiment 1 at 0.6-0.7mm, is used for the copper alloy die cast.
Embodiment 2
1) continues to use the original scheme of material selection of copper alloy die casting; Select for use commercially available HHD hot-work die steel to make the metal base substrate; After pressing the machine-shaping of common process reservation coating surplus; Remove dirts such as die-face oil mark, rusty stain with the silica sand sand-blast, its surfaceness of polishing is the frosting of Ra50, blows off this sandblast face with pressurized air;
2) selecting commercially available Ni80Cr20 bar for use is the tack coat raw material, and employing oxygen second flame bar spraying method adopts the method that laterally vertically replaces thermospray successively, at the working-surface formation tack coat 20 of metal base substrate; The concrete processing parameter of thermospray is oxygen pressure 0.4MPa, acetylene pressure 0.12MPa, compressed air pressure 0.6MPa; Spray distance 85mm, diameter of rod Φ 8mm, speed of feed 160mm/min; Spray gun translational speed 90mm/s, the Ni80Cr20 adhesive layer thickness is controlled at 0.05-0.1mm;
3) select commercially available composite ceramics bar ZrO for use
2(8%Y
2O
3Stable) be the thermal barrier coatings raw material, adopt identical heat spraying method and the processing parameter of spraying tack coat, at tie layer surface spraying ZrO
2(8%Y
2O
3Stable) thermal barrier coatings basic unit, gauge control with the thermal barrier coatings of diamond wheel grinding and polishing to working size formation 0.2-0.9 mm, obtains the ultrahigh-temperature forming mould of the utility model embodiment 1 at 0.3-1.0mm, is used for the copper alloy die cast.
Embodiment 3
1) continues to use the original scheme of material selection of copper alloy die casting; Select for use commercially available HHD hot-work die steel to make the metal base substrate; After pressing the machine-shaping of common process reservation coating surplus; Remove dirts such as die-face oil mark, rusty stain with the silica sand sand-blast, its surfaceness of polishing is the frosting of Ra50, blows off this sandblast face with pressurized air;
2) selecting commercially available NiCrAlY bar for use (is the NiCrAlY alloy; By the quality percentage composition is that 72.5% Ni, quality percentage composition are that 19% Cr, quality percentage composition are that 8% Al and quality percentage composition are that 0.5% Y forms) be the tack coat raw material; Adopt oxygen second flame bar spraying method; Adopt the method that laterally vertically replaces thermospray successively, at the working-surface formation tack coat of metal base substrate; The concrete processing parameter of thermospray is oxygen pressure 0.6MPa, acetylene pressure 0.08MPa, compressed air pressure 0.8MPa; Spray distance 100mm, diameter of rod Φ 7mm, speed of feed 180mm/min; Spray gun translational speed 110mm/s, the NiCrAlY adhesive layer thickness is controlled at 0.05-0.1mm;
3) select commercially available composite ceramics bar ZrO for use
2(8%Y
2O
3Stable) be the thermal barrier coatings raw material, adopt identical heat spraying method and the processing parameter of spraying tack coat, at tie layer surface spraying ZrO
2(8%Y
2O
3Stable) thermal barrier coatings basic unit, gauge control with the thermal barrier coatings of diamond wheel grinding and polishing to working size formation 0.2-0.9 mm, obtains the ultrahigh-temperature forming mould of the utility model embodiment 1 at 0.3-1.0mm, is used for the copper alloy die cast.
Comparative Examples 1
Select for use commercially available HHD hot-work die steel as copper alloy die casting blank, press not made allowance processing acquisition die casting finished product of common process, this common process is that HHD hot-work die steel blank adopts the secondary electroslag remelting process to smelt; After 1240 ℃ of 16h insulation homogenizing are handled; Three upset three pulls out to forge and processes the pole blank, reserve the roughing of 0.2-0.5mm surplus by the die casting final size and process the die casting work in-process, with the die casting work in-process through (quenching temperature 1060-1080 ℃ of quench hot; Air cooling behind the insulation 1h), temper is (tempering temperature 580-600 ℃; Insulation 2h, tempering 2-3 time, hardness 45-48HRC); Last precision work obtains the die casting finished product, is used for the copper alloy die cast.
Embodiment 4
Present embodiment and embodiment 1 difference are that the utility model technical scheme objective for implementation is a die casting, are used for 45 steel (about 1500 ℃ of molten state temperature) die cast.
Comparative Examples 2
Select for use commercially available HHD hot-work die steel as the die casting blank, press not made allowance processing acquisition die casting finished product of common process, this common process is that HHD hot-work die steel blank adopts the secondary electroslag remelting process to smelt; After 1240 ℃ of 16h insulation homogenizing are handled; Three upset three pulls out to forge and processes blank, reserve 0.2-0.5mm surplus roughing blank by the mould final size and process the die casting work in-process, with the die casting work in-process through (quenching temperature 1060-1080 ℃ of quench hot; Air cooling behind the insulation 1h), temper is (tempering temperature 580-600 ℃; Insulation 2h, tempering 2-3 time, hardness 45-48HRC); Last precision work obtains the die casting finished product, is used for 45 steel die casts.
According to seeing table one work-ing life of the ultrahigh-temperature forming mould of the utility model embodiment manufacturing and Comparative Examples:
Table one
| ? | Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative Examples 1 | Embodiment 4 | Comparative Examples 2 |
| Work-ing life (mould) | 3600 | 3700 | 3900 | 500 | 3200 | 400 |
In ultrahigh-temperature moulding operating mode; The thermal barrier coatings of the utility model technical scheme preparation has good high temperature resistant, wear-resistant, antioxidant property; Particularly the thermal boundary effect is excellent, can effectively avoid mould metal base temperature too high, makes the ultrahigh-temperature forming mould keep the good high-temperature performance.Visible according to table one, adopt the ultrahigh-temperature forming mould of the utility model technical scheme preparation to have higher work-ing life, embodiment 1; 2; Be respectively 7.2 times of 1 work-ing life of Comparative Examples 3 work-ing lifes, 7.4 times and 7.8 times, embodiment is 8 times of 2 work-ing lifes of Comparative Examples 4 work-ing lifes.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (5)
1. a ultrahigh-temperature forming mould is characterized in that, comprising:
Metal base substrate (10) has working-surface on it;
Tack coat (20) is sprayed on the said working-surface of said metal base substrate (10); And
Thermal barrier coatings (30) is sprayed on the said tack coat (20).
2. a kind of ultrahigh-temperature forming mould according to claim 1 is characterized in that, said metal base is a kind of in hot-work die steel, the plastic die steel.
3. a kind of ultrahigh-temperature forming mould according to claim 1 is characterized in that, the method for the spraying of adopting in said tack coat (20) and said thermal barrier coatings (30) forming process is to adopt oxygen second flame bar spraying method.
4. a kind of ultrahigh-temperature forming mould according to claim 2 is characterized in that the material of said tack coat (20) is a nickel-base alloy, and the thickness of the said tack coat (20) that said nickel-base alloy forms is 0.05-0.1mm.
5. a kind of ultrahigh-temperature forming mould according to claim 1 is characterized in that the thickness of said thermal barrier coatings (30) is 0.2-0.9mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204799674U CN202322973U (en) | 2011-11-28 | 2011-11-28 | Superhigh-temperature forming die |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204799674U CN202322973U (en) | 2011-11-28 | 2011-11-28 | Superhigh-temperature forming die |
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| CN202322973U true CN202322973U (en) | 2012-07-11 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102416459A (en) * | 2011-11-28 | 2012-04-18 | 机械科学研究总院先进制造技术研究中心 | Ultrahigh temperature forming mold and manufacturing method thereof |
| CN104141102A (en) * | 2013-05-08 | 2014-11-12 | 陈威 | Method for spraying metal coating on surface of steel plate by using ceramic stick spraying gun |
| CN105082414A (en) * | 2014-05-09 | 2015-11-25 | 东和株式会社 | Forming mold |
| CN105642861A (en) * | 2016-01-14 | 2016-06-08 | 瑞安市三义机械有限公司 | Die-casting technology of stainless steel valve body |
| CN106003487A (en) * | 2015-03-30 | 2016-10-12 | 东和株式会社 | Moulding die and material with low sealing property |
-
2011
- 2011-11-28 CN CN2011204799674U patent/CN202322973U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102416459A (en) * | 2011-11-28 | 2012-04-18 | 机械科学研究总院先进制造技术研究中心 | Ultrahigh temperature forming mold and manufacturing method thereof |
| CN104141102A (en) * | 2013-05-08 | 2014-11-12 | 陈威 | Method for spraying metal coating on surface of steel plate by using ceramic stick spraying gun |
| CN105082414A (en) * | 2014-05-09 | 2015-11-25 | 东和株式会社 | Forming mold |
| TWI574813B (en) * | 2014-05-09 | 2017-03-21 | Towa Corp | Forming mold |
| CN106003487A (en) * | 2015-03-30 | 2016-10-12 | 东和株式会社 | Moulding die and material with low sealing property |
| JP2016187941A (en) * | 2015-03-30 | 2016-11-04 | Ｔｏｗａ株式会社 | Molding die and low adhesion material |
| CN105642861A (en) * | 2016-01-14 | 2016-06-08 | 瑞安市三义机械有限公司 | Die-casting technology of stainless steel valve body |
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Granted publication date: 20120711 Termination date: 20151128 |