CN102242330A - Nickel-based stamping die prepared by arc spraying method - Google Patents
Nickel-based stamping die prepared by arc spraying method Download PDFInfo
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- CN102242330A CN102242330A CN2011101503767A CN201110150376A CN102242330A CN 102242330 A CN102242330 A CN 102242330A CN 2011101503767 A CN2011101503767 A CN 2011101503767A CN 201110150376 A CN201110150376 A CN 201110150376A CN 102242330 A CN102242330 A CN 102242330A
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- arc spraying
- press tool
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- powder
- electrical arc
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Abstract
The invention provides an arc spraying method for preparing a stamping die. The method comprises the following steps: providing a rapid prototype, a transition mould or a real product as a female die; pretreating the surface of the female die; carrying out arc spraying on a cored wire so as to prepare a nickel-based stamping die shell; and removing the female die and then post-treating. Through adopting the preparation method of the die in the application, the technical difficult points of the traditional casting or forging method are successfully avoided; and the preparation method in the application has simple process flow, and the surface of the obtained die is high in quality.
Description
Technical field
The present invention relates to a kind of Ni-based press tool, in particular, relate to a kind of Ni-based press tool of arc spray process preparation.
Background technology
Mould is widely used in impact briquetting 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 shocking of rapid heating refrigerative, 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 oxidation phenomenon can not take place in mould under hot conditions.
(5) good processability, the surface of easily being processed into high precision 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 moulding stock mostly, but high temperature oxidation takes place in this mould easily, under thermal cycling effect repeatedly, the inside crystal phase structure of material changes, and surface quality is variation also, thereby causes mould to lose efficacy easily.
In order to address the above problem, people can expect using the metal oxide ceramic particle of hard and superhard alloy to be used to mfg. moulding die usually.But, be difficult to be processed into required specified shape because described material hardness is very high.
The technical problem that is difficult to the processing and manufacturing mould for the metal oxide ceramic particle that solves hard, the present inventor uses in the prior art existing indirect mold making technology in the existing metal spraying by electric arc technology and prior art, has creatively proposed a kind of electric arc spraying Rapid tooling.It is with a mock-up as master mold, be thermal source with electric arc,, and make its injection, be deposited on the master mold surface the atomizing of the metallic substance of molten state by high velocity air, form the metal matrix or the ceramic base coating of certain thickness densification, i.e. the mould shell.
Summary of the invention
One of purpose of the present invention is to provide the method for the Ni-based press tool of a kind of electrical arc spraying method for preparing, and this method can be used for improving the high temperature resistant and wear resisting property of Ni-based press tool, and work-ing life that can this mould of significant prolongation.
Another object of the present invention also is to provide a kind of Ni-based press tool by method for preparing.
To achieve these goals, the present invention at first provides the method for the Ni-based press tool of a kind of electrical arc spraying method for preparing, and it may further comprise the steps:
(1) provides a rapid prototyping, transition model or product material object, as master mold;
(2) pre-treatment is carried out on the master mold surface;
(3) the Ni-based powder cored filament material of electric arc spraying prepares described Ni-based press tool housing;
(4) slough master mold and aftertreatment.
Wherein, be mould of plastics, gypsum mold, the timber mould that rapid shaping technique obtains at the master mold described in the step (1), or ceramic die or graphite jig.
Wherein, comprise the step that applies releasing agent at the pre-treatment step described in the step (2); Described releasing agent can be machinery oil, polyvinyl alcohol etc.Described releasing agent can adopt the mode of brushing or spraying or dipping to put on the outside surface of master mold.
Wherein, in step (3), described Ni-based powder cored filament material has powder sandwich layer and exodermis, and wherein exodermis is a nickel, the quality of described exodermis accounts for the 20-35wt% of a material, and the composition and the content of powder sandwich layer are respectively: TiC:10-15wt%, SiC:10-15wt%, Si
3N
4: the Ni of 5-15wt%, BN:5-15wt%, Cr powder: 8-22wt%, Mo powder: 10-22wt%, B:3-8wt% and surplus.
Wherein, in step (3), the processing parameter of electric arc spraying is: operating voltage: 20-45V; Spray distance is: 100-200mm; Air pressure is 0.4-0.9MPa; Walk filament voltage: 13-18V.As required, the thickness of spraying is 2-20mm.
Wherein preferred described ceramic particle (TiC/SiC/Si
3N
4/ BN) median size is less than 500um; The median size of preferred described ceramic particle is less than 50um; Preferred, the particle diameter of described ceramic particle is a nano level, and median size is in the scope of 10-50nm, and the particle diameter of maximum ceramic particle is not more than 120nm.
Wherein, in step (4), the step that comprises an anneal, under the condition of vacuum environment or rare gas element or reducing gas, carry out anneal, wherein annealing temperature is the 650-900 degree, annealing soaking time 1-5 hour heats up or rate of temperature fall is 0.5-5 degree/second, to form the stable Ni-based housing that contains the hard, wear-resistant phase.
In addition, in order further to improve quality, can also apply extra coating by other methods such as spraying, vapour depositions at the surface of shell of preparation.
Another aspect of the present invention also provides a kind of Ni-based press tool by electrical arc spraying method for preparing, and described Ni-based press tool obtains by spraying Ni-based powder cored filament material at the master mold surface arcing.
Wherein, described Ni-based powder cored filament material has powder sandwich layer and exodermis, and wherein exodermis is a nickel, and the quality of described exodermis accounts for the 20-35wt% of a material, and the composition and the content of powder sandwich layer are respectively: TiC:10-15wt%, SiC:10-15wt%, Si
3N
4: the Ni of 5-15wt%, BN:5-15wt%, Cr powder: 8-22wt%, Mo powder: 10-22wt%, B:3-8wt% and surplus.
Wherein, the processing parameter of electric arc spraying is: the processing parameter of electric arc spraying is: operating voltage: 20-45V; Spray distance is: 100-200mm; Air pressure is 0.4-0.9MPa; Walk filament voltage: 13-18V.As required, the thickness of spraying is 2-20mm.
Wherein said ceramic particle (TiC/SiC/Si
3N
4/ BN) median size is less than 500um; The median size of preferred described ceramic particle is less than 50um; Preferred, the particle diameter of described ceramic particle is a nano level, and median size is in the scope of 10-50nm, and the particle diameter of maximum ceramic particle is not more than 120nm.
Wherein, the step that after electric arc spraying, also comprises an anneal, under the condition of vacuum environment or rare gas element or reducing gas, carry out anneal, wherein annealing temperature is the 650-900 degree, annealing soaking time 1-5 hour, intensification or rate of temperature fall are 0.5-5 degree/second, to form the stable Ni-based housing that contains the hard, wear-resistant phase.
Method of the present invention compared with prior art has the following advantages:
(1) for the material matrix of high rigidity, successful solution traditional casting or the forging method technical barrier for preparing the high rigidity mould; In fact the nickel base mould that has said components can't be realized by traditional casting process; And by forged method, the height that its cost is suitable makes business circles be difficult to accept.
(2) adopt arc spray process, preparation technology's flow process is simple, and the die surface quality height for preparing.
The casting that mould of the present invention and available technology adopting are common or forged nickel base mould etc. are compared, and have the following advantages:
(1) electric arc spraying can form continuously fine and close coating on metal base, and this coating has ceramic-metallic weave construction and performance through behind the high temperature annealing, and possesses and have stainless feature concurrently.
(2) compare with traditional Wimet, have higher hardness, red hardness, wear resistance, wear-resistant ability and stability at elevated temperature, can be anti-pyritous about 1000 degree circulate repeatedly.
Embodiment
Below will make further instructions technical scheme of the present invention by specific embodiment.The applicant it is emphasized that following examples only are the needs for the content that describes invention in detail, and can not think limitation of the present invention.The scope of protection of present invention is as the criterion with the technical scheme that claims were limited.
Embodiment 1
Utilize computer drawing technology to draw the CAD 3D model of part,, adopt the method for digital control processing plaster mold to prepare the gypsum master mold according to the RP technology;
External coating polyvinyl alcohol solution at the gypsum master mold;
At the Ni-based powder cored filament material of outside surface electric arc spraying of gypsum master mold, described powder cored filament material is: exodermis is a nickel,, the quality of described exodermis accounts for the 25wt% of a material, and the composition and the content of powder sandwich layer are respectively: TiC:10wt%, SiC:10wt%, Si
3N
4: the Ni of 10wt%, BN:10wt%, Cr powder: 15wt%, Mo powder: 18wt%, B:5wt% and surplus.The processing parameter of electric arc spraying is: operating voltage: 30V; Spray distance is: 150mm; Air pressure is 0.8MPa; Walk filament voltage: 15V.The thickness of spraying is 5mm.
Remove the gypsum master mold, the Ni-based housing that makes is carried out anneal.The processing condition of anneal are vacuum annealing, annealing temperature: 700 degree, annealing time: 4 hours.
Embodiment 2
Utilize computer drawing technology to draw the CAD 3D model of part,, adopt the method for digital control processing to prepare the resin master mold according to the RP technology;
External coating machinery oil at the resin master mold;
At the Ni-based powder cored filament material of outside surface electric arc spraying of resin master mold, described powder cored filament material is: exodermis is a nickel, and the quality of described exodermis accounts for the 30wt% of a material, and the composition and the content of powder sandwich layer are respectively: TiC:12wt%, SiC:8wt%, Si
3N
4: the Ni of 8wt%, BN:12wt%, Cr powder: 15wt%, Mo powder: 18wt%, B:8wt% and surplus.
Wherein, the processing parameter of electric arc spraying is: operating voltage: 30V; Spray distance is: 180mm; Air pressure is 0.8MPa; Walk filament voltage: 15V.The thickness of spraying is 10mm.
Remove the resin master mold, the Ni-based housing that makes is carried out anneal.The processing condition of anneal are vacuum annealing, annealing temperature: 800 degree, annealing time: 3 hours.
Embodiment 3
Utilize computer drawing technology to draw the CAD 3D model of part, adopt the method for digital control processing to prepare the timber master mold;
External coating machinery oil at the timber master mold;
At the Ni-based powder cored filament material of outside surface electric arc spraying of timber master mold, described powder cored filament material is: the quality of described exodermis accounts for the 35wt% of a material, and the composition and the content of powder sandwich layer are respectively: TiC:15wt%, SiC:10wt%, Si
3N
4: the Ni of 5wt%, BN:5wt%, Cr powder: 10wt%, Mo powder: 15wt%, B:5wt% and surplus.
Wherein, the processing parameter of electric arc spraying is: operating voltage: 30V; Spray distance is: 200mm; Air pressure is 0.9MPa; Walk filament voltage: 16V.The thickness of spraying is 10mm.
Remove the timber master mold, the Ni-based housing that makes is carried out anneal.The processing condition of anneal are vacuum annealing, annealing temperature: 900 degree, annealing time: 3 hours.
Claims (10)
1. the method for the Ni-based press tool of electrical arc spraying method for preparing, it may further comprise the steps:
(1) provides a rapid prototyping, transition model or product material object, as master mold;
(2) pre-treatment is carried out on the master mold surface;
(3) the Ni-based powder cored filament material of electric arc spraying prepares described Ni-based press tool housing;
(4) slough master mold and aftertreatment.
2. the method for the Ni-based press tool of the described electrical arc spraying method for preparing of claim 1, its feature is mould of plastics, gypsum mold, timber mould, ceramic die or graphite jig at described master mold.
3. the method for the Ni-based press tool of the described electrical arc spraying method for preparing of claim 1, described pre-treatment step comprises the step that applies releasing agent; Described releasing agent can be machinery oil or polyvinyl alcohol.
4. the method for the Ni-based press tool of the described electrical arc spraying method for preparing of claim 1, described Ni-based powder cored filament material has powder sandwich layer and exodermis, wherein exodermis is a nickel, the quality of described exodermis accounts for the 20-35wt% of a material, and the composition and the content of powder sandwich layer are respectively: TiC:10-15wt%, SiC:10-15wt%, Si
3N
4: the Ni of 5-15wt%, BN:5-15wt%, Cr powder: 8-22wt%, Mo powder: 10-22wt%, B:3-8wt% and surplus.
5. the method for the Ni-based press tool of the described electrical arc spraying method for preparing of claim 1, the processing parameter of electric arc spraying is: operating voltage: 20-45V; Spray distance is: 100-200mm; Air pressure is 0.4-0.9MPa; Walk filament voltage: 13-18V.As required, the thickness of spraying is 2-20mm.
6. the method for the Ni-based press tool of the described electrical arc spraying method for preparing of claim 4, described TiC, Si
3N
4, SiC and BN particle median size less than 500um.
7. the method for the Ni-based press tool of the described electrical arc spraying method for preparing of claim 6, described TiC, Si
3N
4, SiC and BN particle median size in the scope of 10-50nm, and the particle diameter of maximum ceramic particle is not more than 120nm.
8. the method for the Ni-based press tool of the described electrical arc spraying method for preparing of claim 1, step (4) comprises the step of an anneal, carries out anneal under the condition of vacuum environment or rare gas element or reducing gas.
9. the method for the Ni-based press tool of the described electrical arc spraying method for preparing of claim 1, wherein annealing temperature is the 650-900 degree, annealing soaking time 1-5 hour heats up or rate of temperature fall is 0.5-5 degree/second.
10. Ni-based press tool, the method any according to claim 1-9 prepares.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101503767A CN102242330A (en) | 2011-06-07 | 2011-06-07 | Nickel-based stamping die prepared by arc spraying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101503767A CN102242330A (en) | 2011-06-07 | 2011-06-07 | Nickel-based stamping die prepared by arc spraying method |
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|---|---|
| CN102242330A true CN102242330A (en) | 2011-11-16 |
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| CN2011101503767A Pending CN102242330A (en) | 2011-06-07 | 2011-06-07 | Nickel-based stamping die prepared by arc spraying method |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1339616A (en) * | 2000-08-17 | 2002-03-13 | 湖南省高程科技有限公司 | Coating method for wear resistank composite coating on steel base surface |
| CN1488455A (en) * | 2003-08-18 | 2004-04-14 | 西安交通大学 | Method of rapid manufacture of stamping die for arc spraying covering-piece for automobile |
-
2011
- 2011-06-07 CN CN2011101503767A patent/CN102242330A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1339616A (en) * | 2000-08-17 | 2002-03-13 | 湖南省高程科技有限公司 | Coating method for wear resistank composite coating on steel base surface |
| CN1488455A (en) * | 2003-08-18 | 2004-04-14 | 西安交通大学 | Method of rapid manufacture of stamping die for arc spraying covering-piece for automobile |
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Application publication date: 20111116 |