CN101434026B - High-melting metal arc spraying rapid die-manufacturing method - Google Patents
High-melting metal arc spraying rapid die-manufacturing method Download PDFInfo
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Abstract
The invention belongs to the field of the advanced manufacturing technology in the manufacturing industry, relates to a quick die manufacturing method, in particular to a quick die manufacturing method through arc spraying of high-melting metals. The method adopts a non-roasting ceramic master die as a composite mold base, arranges fused drop on the surface of the master die through arc spraying of the high-melting metals, adds a die frame on the rear of a shell after spraying of a certain thickness, fills resin and high-strength cement back lining, and performs after-treatment such as edge cutting and polishing on the surface of the shell after demoulding. The invention provides the quick and low-cost die manufacturing integrated technology.
Description
Technical field
The invention belongs to manufacturing advanced manufacturing technology field, relate to rapid tooling manufacturing method, particularly a kind of high-melting metal arc spraying rapid die-manufacturing method.
Background technology
The metal arc spraying rapid die-manufacturing technology is a kind of mold making technology based on " duplicating ", it with a mock-up (or being called prototype) as master mold, with electric arc is thermal source, by the metal material atomizing of high velocity air with molten condition, and make its injection, be deposited on the master mold surface, form certain thickness compact metal coating, i.e. the mould shell.The mould shell has accurately copied the shape of prototype, has obtained required mold cavity, after finishing aftertreatment technologys such as back lining materials cast, the demoulding, polishing, can finish the quick manufacturing of mould.Metal spraying by electric arc mould making process flow process mainly comprises: the preparation of master mold and processing; Metal spraying by electric arc; Fill back lining materials; The demoulding and post processing etc.Also can carry out surface finish or carry out the numerical control fine finishining of few cutting output according to actual conditions and needs, to obtain higher form accuracy, dimensional accuracy and surface quality.
For metal blank drawing and moulding mould, the metal material of metal arc spraying rapid die-manufacturing generally is a low-melting-point metal in zinc, the allumen etc., depend on sprayed on material fully in the hardness of metal spraying mould, intensity and service life, and middle low-melting-point metal hardness is low, intensity is low, die life is low, can not reach production in enormous quantities, range of application is restricted.
Therefore, the high-melting metal arc spraying mfg. moulding die can significantly improve the hardness of metal shell, improves the service life of mould, enlarges the range of application of mould.
Chinese patent " electric arc spraying stamping die of automotive covering part method for fast mfg " (publication number CN1488455), content are a kind of metal spraying by electric arc stamping die of automotive covering part method for fast mfg.This method is based on the metal spraying by electric arc technology, realized the quick manufacturing of car panel die in conjunction with technology such as fiberglass moulding, molding for epoxy resin, brush platings, for the sample car trial-production in the new model exploitation, cladding member mold trial-production provide quick, the economic means of services.This method comprises, processing steps such as the preparation of spraying master mold, matrix processing, metal spraying by electric arc, back lining materials filling, the final mould that forms presents the gradient layer structure on the cross section, each structure sheaf has different mechanical performances, help bringing into play material behavior, both guaranteed the mold integral performance requirement, and simplified technology again, reduced cost.This method does not relate to the die-manufacturing method of high melting point metal materials and to the heating of master mold.
The Chinese patent of Technical Research Centre of Finland's application " tool steel reaches the method by spraying shaping rapid processing " (publication number CN1705535).This patent relates to a kind of thermal spraying die steel material and prepares the mould method, and die steel material chemical element composition comprises iron, carbon, silicon, manganese, chromium, molybdenum, vanadium, and wherein the vanadium composition surpasses 1.4w-%.With the die steel material atomizing, be sprayed on then on the ceramic female die, the pendulum angle that master mold does not stop, axis keeps certain angle of deposit with nozzle, makes molten drop be deposited on the master mold surface, finally forms fast mould.This method does not relate to electric arc spraying mfg. moulding die technology, and this method does not relate to the preliminary treatment of master mold inner surface and the heating of mother plate substrate yet.
U.S. Ford Global Technologies, Inc., patent, Method of making aspray formed rapid tool, patent No. US6513567.This patent is to make a ceramic female die earlier, ceramic female die heated, and the metallic particles of spraying molten condition on master mold, thereby the mould of being made fast, this invention does not relate to the high melting point metal materials die-manufacturing method.
Mostly the domestic and international thermal spraying quickly manufacturing mould material that adopts is middle low melting point metal material at present, with zinc, allumen etc. is that the middle low-melting-point metal electric arc spraying Rapid tooling of representative is applied in automobile large-scale covering mould development and sample car manufacturing, embodies huge technological value and obtains good economic benefit with its quick and low-cost characteristics.But because the hardness of zinc, allumen is relatively low, the service life and the range of application of mould are subjected to certain limitation.
The arc spraying technology of high-melting-point, high hardness material is realized than being easier on metallic matrix, but at nonmetal master mold surface mfg. moulding die shell, is but had big difficulty on the technology.Refractory metal such as carbon steel, steel alloy when spraying coating shrinkage factor, thermal stress, porosity all bigger, coating is easy to crack, warpage, peel off, the mould shell is made difficulty, technological parameter is controlled and is difficult to grasp,
The easy scaling loss of carbon and alloying element in the arc spray process easily causes coating porous and oxide slag inclusion, and coating performance is descended.The spraying wire composition is directly determining the coating structure and the mechanical performance of mould shell.
Summary of the invention
At the deficiency that middle low-melting-point metal electric arc spraying Rapid tooling exists, the invention provides a kind of method of high-melting metal arc spraying mfg. moulding die.For achieving the above object, the present invention adopts following technical scheme:
A kind of high-melting metal arc spraying rapid die-manufacturing method is characterized in that, concrete steps are:
(1) preparation of master mold:
1) determine the shape and size of mother plate substrate according to the shape and size of product, make no roasting ceramic female die matrix, dry with the refractory ceramics raw material:
2) mother plate substrate after the oven dry, according to the 3D digital-to-analogue of the mother plate substrate that matches with its shape of the 3D digital-to-analogue manufacturing of part, mother plate substrate carries out machining on numerical control device:
3) obtain the master mold that size and precision all meet the product design requirement.
(2) everywhere managing in advance of master mold:
1) polishing master mold inner surface, perhaps the concentration of operating weight percentage is the hydrochloric acid brushing master mold surface of 20-60%; Improve the surface roughness of master mold, remove the dust and the particle on master mold surface;
(3) master mold is heated: with controllable temperature heater heating master mold, guarantee that the mother plate substrate temperature is even, the temperature of control master mold is at 250 ℃-300 ℃;
(4) metal spraying by electric arc:
1) for spray gun can be moved and spraying operation along the mother plate substrate contour shape, need revise, carry out layering and handle the 3D mathematical model of pre-designed part;
2) by electric arc spraying refractory metal molten drop 3Cr13 martensitic stain less steel to the master mold surface, according to design parameter, spray gun can be moved and spraying operation along the mother plate substrate contour shape, spray to the other end from an end of master mold, repeat such process, reach 10～20mm up to spray-on coating thickness, obtain the metal shell of master mold;
Spray voltage is 28～35V, and spraying current is 160A～240A, and compressed air pressure is 0.50～0.60MPa, and wire feed voltage is 10～12V, and spray distance is 200～280mm.
The 3Cr13 coating is made up of martensitic matrix, ferrochrome oxide, pore etc., and coating is grey black.Microsclerometry is martensitic matrix HV550～650, ferrochrome oxide HV650～700, and the macrohardness of coating is HRC40～45, and 3Cr13 coating even compact, oxide are few, porosity is low, uneven with matrix bond face pattern, all there are not big hole and oxide, in conjunction with good.
(5) making of backing:
Framed through adding on the metal shell back side of electric arc spraying, described film frame is to be made by steel plate, and its shape is consistent with the profile outer rim of the metal shell of master mold, and potting resin and high strength cement are as backing in framed;
(6) post processing:
The demoulding is also with unnecessary limit excision;
(7) to the polishing of mould metal shell inner surface finish, obtain final operable mould.
Major advantage of the present invention:
1, no roasting ceramic female die has that cost is low, fabrication cycle is short, need not high-temperature roasting, is particularly suitable for the high-melting metal arc spraying rapid die-manufacturing technology.Compare with traditional gypsum mould master mold, have characteristics such as intensity height, high temperature resistant and electric arc spraying process performance be good.
2, in spraying process master mold is heated, the temperature of control master mold helps reducing even eliminating the generation of holiday, and coating layer thickness is significantly increased.
3, the refractory metal molten drop of electric arc spraying is the 3Cr13 martensitic stain less steel, the 3Cr13 coating is made up of martensitic matrix, ferrochrome oxide, pore etc., coating is grey black coating even compact, oxide is few, porosity is low, uneven with matrix bond face pattern, all there are not big hole and oxide, in conjunction with good.
4, but be the most attractive by electric arc spraying die-manufacturing method manufacturing high rigidity, high strength spraying mould, not only because its material price is cheap relatively, more can increase substantially and spray die life, thereby widen the range of application of spraying mould because of high rigidity, high-intensity mould shell.
5, carbon steel and low alloy steel is the electric arc spraying material of using always.It has, and intensity is higher, wearability good, lower-price characteristic.
Specific implementation method
Embodiment one realizes that the step of rapid die-manufacturing is as follows:
(1) preparation of master mold:
1) determine the shape and size of mother plate substrate according to the shape and size of product, make no roasting ceramic female die matrix, dry with the refractory ceramics raw material:
2) mother plate substrate after the oven dry, according to the 3D digital-to-analogue of the mother plate substrate that matches with its shape of the 3D digital-to-analogue manufacturing of part, mother plate substrate carries out machining on numerical control device:
3) obtain the master mold that size and precision all meet the product design requirement.
(2) everywhere managing in advance of master mold:
1) polishing master mold inner surface, perhaps the concentration of operating weight percentage is 20% hydrochloric acid brushing master mold surface; Improve the surface roughness of master mold, remove the dust and the particle on master mold surface;
(3) master mold is heated: with controllable temperature heater heating master mold, guarantee that the mother plate substrate temperature is even, the temperature of control master mold is at 300 ℃;
(4) metal spraying by electric arc:
1) for spray gun can be moved and spraying operation along the mother plate substrate contour shape, need revise, carry out layering and handle the 3D mathematical model of pre-designed part;
2) by electric arc spraying refractory metal molten drop 3Cr13 martensitic stain less steel to the master mold surface, according to design parameter, spray gun can be moved and spraying operation along the mother plate substrate contour shape, spray to the other end from an end of master mold, repeat such process, reach 10mm up to spray-on coating thickness, obtain the metal shell of master mold;
Spray voltage is 35V, and spraying current is 160A, and compressed air pressure is 0.50MPa, and wire feed voltage is 12V, and spray distance is 200mm.
(5) making of backing:
Framed through adding on the metal shell back side of electric arc spraying, described film frame is to be made by steel plate, and its shape is consistent with the profile outer rim of the metal shell of master mold, and potting resin and high strength cement are as backing in framed;
(6) post processing:
The demoulding is also with unnecessary limit excision;
(7) to the polishing of mould metal shell inner surface finish, obtain final operable mould.
Embodiment two
(1) preparation of master mold:
1) determine the shape and size of mother plate substrate according to the shape and size of product, make no roasting ceramic female die matrix, dry with the refractory ceramics raw material:
2) mother plate substrate after the oven dry, according to the 3D digital-to-analogue of the mother plate substrate that matches with its shape of the 3D digital-to-analogue manufacturing of part, mother plate substrate carries out machining on numerical control device:
3) obtain the master mold that size and precision all meet the product design requirement.
(2) everywhere managing in advance of master mold:
1) polishing master mold inner surface, perhaps the concentration of operating weight percentage is 36% hydrochloric acid brushing master mold surface; Improve the surface roughness of master mold, remove the dust and the particle on master mold surface;
(3) master mold is heated: with controllable temperature heater heating master mold, guarantee that the mother plate substrate temperature is even, the temperature of control master mold is at 250 ℃;
(4) metal spraying by electric arc:
1) for spray gun can be moved and spraying operation along the mother plate substrate contour shape, need revise, carry out layering and handle the 3D mathematical model of pre-designed part;
2) by electric arc spraying refractory metal molten drop 3Cr13 martensitic stain less steel to the master mold surface, according to design parameter, spray gun can be moved and spraying operation along the mother plate substrate contour shape, spray to the other end from an end of master mold, repeat such process, reach 20mm up to spray-on coating thickness, obtain the metal shell of master mold;
Spray voltage is 28V, and spraying current is 240A, and compressed air pressure is 0.60MPa, and wire feed voltage is 12V, and spray distance is 280mm.
(5) making of backing:
Framed through adding on the metal shell back side of electric arc spraying, described film frame is to be made by steel plate, and its shape is consistent with the profile outer rim of the metal shell of master mold, and potting resin and high strength cement are as backing in framed;
(6) post processing:
The demoulding is also with unnecessary limit excision;
(7) to the polishing of mould metal shell inner surface finish, obtain final operable mould.
Embodiment three
(1) preparation of master mold:
1) determine the shape and size of mother plate substrate according to the shape and size of product, make no roasting ceramic female die matrix, dry with the refractory ceramics raw material:
2) mother plate substrate after the oven dry, according to the 3D digital-to-analogue of the mother plate substrate that matches with its shape of the 3D digital-to-analogue manufacturing of part, mother plate substrate carries out machining on numerical control device:
3) obtain the master mold that size and precision all meet the product design requirement.
(2) everywhere managing in advance of master mold:
1) polishing master mold inner surface, perhaps the concentration of operating weight percentage is 28% hydrochloric acid brushing master mold surface; Improve the surface roughness of master mold, remove the dust and the particle on master mold surface;
(3) master mold is heated: with controllable temperature heater heating master mold, guarantee that the mother plate substrate temperature is even, the temperature of control master mold is at 275 ℃;
(4) metal spraying by electric arc:
1) for spray gun can be moved and spraying operation along the mother plate substrate contour shape, need revise, carry out layering and handle the 3D mathematical model of pre-designed part;
2) by electric arc spraying refractory metal molten drop 3Cr13 martensitic stain less steel to the master mold surface, according to design parameter, spray gun can be moved and spraying operation along the mother plate substrate contour shape, spray to the other end from an end of master mold, repeat such process, reach 15mm up to spray-on coating thickness, obtain the metal shell of master mold;
Spray voltage is 32V, and spraying current is 200A, and compressed air pressure is 0.55MPa, and wire feed voltage is 11V, and spray distance is 240mm.
(5) making of backing:
Framed through adding on the metal shell back side of electric arc spraying, described film frame is to be made by steel plate, and its shape is consistent with the profile outer rim of the metal shell of master mold, and potting resin and high strength cement are as backing in framed;
(6) post processing:
The demoulding is also with unnecessary limit excision;
(7) to the polishing of mould metal shell inner surface finish, obtain final operable mould.
This refractory metal spraying rapid die-manufacturing method is compared with the traditional moulds processing method, and cost is equivalent to about 1/2 of ordinary steel mould, and the Mold Making cycle generally was less than for 4 weeks. The die surface hardness that this method is made is greater than HRC40, and deep drawing of sheet can reach more than 20,000 die life. Can provide fast for exploitation, trial-production and the batch production of the industry new products such as automobile, aviation, instrument and meter, plastic products and military project, mould manufacturing integration technology cheaply, especially can greatly shorten Autobody Development cycle, reduce the cost of exploitation, for the exploitation of automobile new model provides technical support.
Claims (4)
1. a high-melting metal arc spraying rapid die-manufacturing method is characterized in that, concrete steps are:
(1) preparation of master mold:
1) determine the shape and size of mother plate substrate according to the shape and size of product, make no roasting ceramic female die matrix, dry with the refractory ceramics raw material:
2) mother plate substrate after the oven dry, according to the 3D digital-to-analogue of the mother plate substrate that matches with its shape of the 3D digital-to-analogue manufacturing of part, mother plate substrate carries out machining on numerical control device:
3) obtain the master mold that size and precision all meet the product design requirement;
(2) everywhere managing in advance of master mold:
1) polishing master mold inner surface, perhaps the concentration of operating weight percentage is the hydrochloric acid brushing master mold surface of 20-60%; Improve the surface roughness of master mold, remove the dust on master mold surface;
(3) master mold is heated: with controllable temperature heater heating master mold, guarantee that the mother plate substrate temperature is even, the temperature of control master mold is at 250 ℃-300 ℃;
(4) metal spraying by electric arc:
1) for spray gun can be moved and spraying operation along the mother plate substrate contour shape, need the 3D mathematical model correction of pre-designed part be carried out layering and handle;
2) by electric arc spraying refractory metal molten drop 3Cr13 martensitic stain less steel to the master mold surface, according to design parameter, spray gun can be moved and spraying operation along the mother plate substrate contour shape, spray to the other end from an end of master mold, repeat such process, reach 10～20mm up to spray-on coating thickness, obtain the metal shell of master mold;
Spray voltage is 28～35V, and spraying current is 160A～240A, and compressed air pressure is 0.50～0.60MPa, and wire feed voltage is 10～12V, and spray distance is 200～280mm;
The 3Cr13 coating is made up of martensitic matrix, ferrochrome oxide, pore, coating is grey black, microsclerometry is martensitic matrix HV550～650, ferrochrome oxide HV650～700, the macrohardness of coating is HRC40～45,3Cr13 coating even compact, oxide are few, and porosity is low, and is uneven with matrix bond face pattern, all there are not big hole and oxide, in conjunction with good;
(5) making of backing:
Framed through adding on the metal shell back side of electric arc spraying, described film frame is to be made by steel plate, and its shape is consistent with the profile outer rim of the metal shell of master mold, and potting resin and high strength cement are as backing in framed;
(6) post processing:
The demoulding is also with unnecessary limit excision;
(7) to the polishing of mould metal shell inner surface finish, obtain final operable mould.
2. high-melting metal arc spraying rapid die-manufacturing method according to claim 1 is characterized in that, step is:
(1) preparation of master mold:
1) determine the shape and size of mother plate substrate according to the shape and size of product, make no roasting ceramic female die matrix, dry with the refractory ceramics raw material:
2) mother plate substrate after the oven dry, according to the 3D digital-to-analogue of the mother plate substrate that matches with its shape of the 3D digital-to-analogue manufacturing of part, mother plate substrate carries out machining on numerical control device:
3) obtain the master mold that size and precision all meet the product design requirement;
(2) everywhere managing in advance of master mold:
1) polishing master mold inner surface, perhaps the concentration of operating weight percentage is 20% hydrochloric acid brushing master mold surface; Improve the surface roughness of master mold, remove the dust on master mold surface;
(3) master mold is heated: with controllable temperature heater heating master mold, guarantee that the mother plate substrate temperature is even, the temperature of control master mold is at 300 ℃;
(4) metal spraying by electric arc:
1) for spray gun can be moved and spraying operation along the mother plate substrate contour shape, need revise, carry out layering and handle the 3D mathematical model of pre-designed part;
2) by electric arc spraying refractory metal molten drop 3Cr13 martensitic stain less steel to the master mold surface, according to design parameter, spray gun can be moved and spraying operation along the mother plate substrate contour shape, spray to the other end from an end of master mold, repeat such process, reach 10mm up to spray-on coating thickness, obtain the metal shell of master mold;
Spray voltage is 35V, and spraying current is 160A, and compressed air pressure is 0.50MPa, and wire feed voltage is 12V, and spray distance is 200mm;
The 3Cr13 coating is made up of martensitic matrix, ferrochrome oxide, pore, coating is grey black, microsclerometry is martensitic matrix HV550～650, ferrochrome oxide HV650～700, the macrohardness of coating is HRC40～45,3Cr13 coating even compact, oxide are few, and porosity is low, and is uneven with matrix bond face pattern, all there are not big hole and oxide, in conjunction with good;
(5) making of backing:
Framed through adding on the metal shell back side of electric arc spraying, described film frame is to be made by steel plate, and its shape is consistent with the profile outer rim of the metal shell of master mold, and potting resin and high strength cement are as backing in framed;
(6) post processing:
The demoulding is also with unnecessary limit excision;
(7) to the polishing of mould metal shell inner surface finish, obtain final operable mould.
3. high-melting metal arc spraying rapid die-manufacturing method according to claim 1 is characterized in that, step is:
(1) preparation of master mold:
1) determine the shape and size of mother plate substrate according to the shape and size of product, make no roasting ceramic female die matrix, dry with the refractory ceramics raw material:
2) mother plate substrate after the oven dry, according to the 3D digital-to-analogue of the mother plate substrate that matches with its shape of the 3D digital-to-analogue manufacturing of part, mother plate substrate carries out machining on numerical control device:
3) obtain the master mold that size and precision all meet the product design requirement;
(2) everywhere managing in advance of master mold:
1) polishing master mold inner surface, perhaps the concentration of operating weight percentage is 36% hydrochloric acid brushing master mold surface; Improve the surface roughness of master mold, remove the dust on master mold surface;
(3) master mold is heated: with controllable temperature heater heating master mold, guarantee that the mother plate substrate temperature is even, the temperature of control master mold is at 250 ℃;
(4) metal spraying by electric arc:
1) for spray gun can be moved and spraying operation along the mother plate substrate contour shape, need revise, carry out layering and handle the 3D mathematical model of pre-designed part;
2) by electric arc spraying refractory metal molten drop 3Cr13 martensitic stain less steel to the master mold surface, according to design parameter, spray gun can be moved and spraying operation along the mother plate substrate contour shape, spray to the other end from an end of master mold, repeat such process, reach 20mm up to spray-on coating thickness, obtain the metal shell of master mold;
Spray voltage is 28V, and spraying current is 240A, and compressed air pressure is 0.60MPa, and wire feed voltage is 12V, and spray distance is 280mm;
The 3Cr13 coating is made up of martensitic matrix, ferrochrome oxide, pore, coating is grey black, microsclerometry is martensitic matrix HV550～650, ferrochrome oxide HV650～700, the macrohardness of coating is HRC40～45,3Cr13 coating even compact, oxide are few, and porosity is low, and is uneven with matrix bond face pattern, all there are not big hole and oxide, in conjunction with good;
(5) making of backing:
Framed through adding on the metal shell back side of electric arc spraying, described film frame is to be made by steel plate, and its shape is consistent with the profile outer rim of the metal shell of master mold, and potting resin and high strength cement are as backing in framed;
(6) post processing:
The demoulding is also with unnecessary limit excision;
(7) to the polishing of mould metal shell inner surface finish, obtain final operable mould.
4. high-melting metal arc spraying rapid die-manufacturing method according to claim 2 is characterized in that, step is:
(1) preparation of master mold:
1) determine the shape and size of mother plate substrate according to the shape and size of product, make no roasting ceramic female die matrix, dry with the refractory ceramics raw material:
2) mother plate substrate after the oven dry, according to the 3D digital-to-analogue of the mother plate substrate that matches with its shape of the 3D digital-to-analogue manufacturing of part, mother plate substrate carries out machining on numerical control device:
3) obtain the master mold that size and precision all meet the product design requirement;
(2) everywhere managing in advance of master mold:
1) polishing master mold inner surface, perhaps the concentration of operating weight percentage is 28% hydrochloric acid brushing master mold surface; Improve the surface roughness of master mold, remove the dust on master mold surface;
(3) master mold is heated: with controllable temperature heater heating master mold, guarantee that the mother plate substrate temperature is even, the temperature of control master mold is at 275 ℃;
(4) metal spraying by electric arc:
1) for spray gun can be moved and spraying operation along the mother plate substrate contour shape, need revise, carry out layering and handle the 3D mathematical model of pre-designed part;
2) by electric arc spraying refractory metal molten drop 3Cr13 martensitic stain less steel to the master mold surface, according to design parameter, spray gun can be moved and spraying operation along the mother plate substrate contour shape, spray to the other end from an end of master mold, repeat such process, reach 15mm up to spray-on coating thickness, obtain the metal shell of master mold;
Spray voltage is 32V, and spraying current is 200A, and compressed air pressure is 0.55MPa, and wire feed voltage is 11V, and spray distance is 240mm;
The 3Cr13 coating is made up of martensitic matrix, ferrochrome oxide, pore, coating is grey black, microsclerometry is martensitic matrix HV550～650, ferrochrome oxide HV650～700, and the macrohardness of coating is HRC40～45, and 3Cr13 coating even compact, oxide are few, porosity is low, uneven with matrix bond face pattern, all there are not big hole and oxide, in conjunction with good;
(5) making of backing:
Framed through adding on the metal shell back side of electric arc spraying, described film frame is to be made by steel plate, and its shape is consistent with the profile outer rim of the metal shell of master mold, and potting resin and high strength cement are as backing in framed;
(6) post processing:
The demoulding is also with unnecessary limit excision;
(7) to the polishing of mould metal shell inner surface finish, obtain final operable mould.
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| CN102407562B (en) * | 2011-12-01 | 2013-08-14 | 青岛理工大学 | Equipment for rapid manufacturing process of high-melting-point metal arc spraying ceramic female die |
| CN102443755B (en) * | 2011-12-07 | 2013-08-14 | 青岛理工大学 | Intelligent manufacturing system for high-melting-point metal arc spraying |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101049667A (en) * | 2007-04-30 | 2007-10-10 | 陈守林 | Technique for fabricating planar whirl spring of flat wire in hard state |
| CN101186988A (en) * | 2007-12-08 | 2008-05-28 | 中国兵器工业第五二研究所 | Nitrogen jet deposited magnesium alloy material and its preparation process |
| CN101195126A (en) * | 2007-12-26 | 2008-06-11 | 华北电力大学 | Ceramic-metallic composite cladding layer top head for tube inserting machine and method for producing the same |
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