CN1532306A

CN1532306A - Metal electroforming method of forming external mold and internal and exterual combined mold

Info

Publication number: CN1532306A
Application number: CNA031174957A
Authority: CN
Inventors: 蒋荣昌
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-03-20
Filing date: 2003-03-20
Publication date: 2004-09-29

Abstract

The present invention relates to electroforming method, and is especially electroforming method with external model and combined internal and external model. The technological scheme is that the traditional electroforming technique with internal model mainly is altered into one with external model mainly and combined internal and external model. The present invention can obtain even higher precision of noble metal and other metal castings. The present invention is suitable for production of artistic metal works and industrial products with complicated shape, fine surface decoration and high precision.

Description

Outer model model forming of metal plating and inside and outside model built-up pattern forming method

Affiliated technical field

The present invention relates to a kind of electrotyping forming method, particularly beyond the electrotyping forming method of model model and the moulding of inside and outside model built-up pattern, and the application in precious metal art ware making field.

Background technology

No matter existing electroforming process is to cast the system workpiece with the metal ion spraying or with the method for metal ion infiltration (submergence), as a kind of new metal casting technique, its technological design thought and method are all because of the predecessor of electroforming process early is applied to plated film, spraying is repaired and the metal works surface composite layer field that makes is greatly limited.Corresponding with the technological design thought of the above-mentioned early stage technical applications of electroforming process, expanded at present the precious metal art ware make the moulding process that electroforming process adopted in field remain in model model forming technology.That is to say, existing electroform product all is to cast the system product with method coated at interior model model outside surface or injection (infiltration) needed metal ion layer, does not break away from process thought and method that process goals such as plated film, spraying and surface recombination metal level before this set.

But this kind processing method has greatly limited the range of application of electroforming process in metal art goods field, because the technology with interior model model forming is not suitable for casting control surface decorative pattern complicated meticulous or high to the molding surface accuracy requirement art and mechanicals, infiltration or be sprayed in the metal ion layer of model model surface will on different thickness, blur to some extent in model model outside surface decorative pattern and the original modelling feature of moulding, thereby damage the art ware of made or workpiece to some extent by due artistic effect of its design objective and accuracy requirement.The moulding and the expressive ability of electroforming metal art ware have greatly been limited thus, the product that can not realize ideal and design objective.

Summary of the invention

Technical problem to be solved by this invention is, the original design objective of a kind of implementation model ideally, working accuracy and artistic effect are provided, and guarantees that molding surface that model is determined and decorative pattern are by the electroforming process method of casting system process change.

In order to solve technical problem of the present invention; the technical scheme that is adopted is; in advance with paraffin; resin; silicon rubber; gypsum; the combination of metal or other molding material or above-mentioned materials makes the metal art goods of the system of will casting or the outer model model of other foundry goods; by known electroforming process requirement the conductionization processing is done on the inner chamber moulding surface of this outer model model then; handle making protectiveness simultaneously with irrelevant outer model model outside surface of mould casting and side surface; decision model in the suit in the model model outside above-mentioned whether as required; the outer model model (or together with the interior model that performs same processing) that performs above-mentioned processing is inserted in the electroforming apparatus; at the plasma electric field of this device and make in the vacuum make the metal wall thickness of design with known electroforming process after; the outer model model of taking-up metal products and moulding thereof (or in; outer model built-up pattern); melt or open outer model model (or together with interior model), can obtain required metal or metal and nonmetal layering compound art goods.

In order to realize technical scheme of the present invention better, the moulding of above-mentioned outer model model (or inside and outside model built-up pattern) and decorative pattern are the models with the actual product that makes (cooperating fully) in full accord on size and tolerance range, needn't can't accurately control the actual result of final product because of model and on model, reserve deformation space as model model forming technology in traditional electroforming.

Adopt outer model model of the present invention and outer, interior model built-up pattern electrotyping forming method, the wall that is applicable to complicated artistic design and fine surface decorative pattern and has degree of precision to require thin or the precious metal art ware of the thin hollow of wall and the production of other mechanicals.Can be used as the important process method in gold and silver decorative art and other objects made from precious metals production field.Because cooperating the model electroforming process to have than model model forming method in original electroforming, outer model model of the present invention and outer interior model far be the accurate type ability of making of casting, that the product that makes with this method has is meticulousr, artistic expression accurately, to be indoor, exterior decoration product and decoration element market and inconvenient follow-up mechanical process and the industrial foundry goods that has degree of precision to require, and high-grade packaging market provides new product category and pattern, has broad application prospects.

The present invention is described in further detail below in conjunction with accompanying drawing

Fig. 1 is principal section figure of the present invention.

Embodiment

As shown in Figure 1, outer model model 1 of the present invention is made by paraffin, silicon rubber, gypsum, resin, metal and other material and combination thereof that is suitable for meticulous moulding, outer model model 1 internal surface has the decorative pattern or the structure of any moulding, outside above-mentioned on model model 1 surface of internal cavity or by in outer model model 1 inner chamber and the die cavity that the interior model model 3 moulding faces that cooperate with it constitute, with known electroforming process formed metal articles 2.

When using the present invention to make metal products; embodiment is; earlier by machining or manual carving system; the method of turning over system makes paraffin; silicon rubber; resin; gypsum; the outer model model 1 of metal or other material (or together with the interior model model 3 that cooperates with it); mold cavity surface in the outer model model 1 moulding face of the interior model model 3 that cooperates with it (or together with) was done the conductionization processing and after outside surface that above-mentioned model and foundry goods moulding are had nothing to do and side surface do the overprotection processing; above-mentioned outer model model 1 (or together with interior model model 3) is inserted electroforming apparatus; with the adhere to specification foundry goods of wall thickness of known metal plasma electroforming process model model 1 mold cavity surface (or outside model model 1 cooperate in the die cavity that forms) moulding outside above-mentioned with interior model model 3; be adsorbed on mold cavity surface in the outer model model 1 (or in; outer model cooperates in the gained die cavity) metal ion will accurately not have the shifting ground and duplicate decorative pattern and moulding by the die cavity decision, thereby avoided traditional interior model model electrotyping forming method because of the product decorative pattern that uncontrollable accumulation caused of mold cavity surface metal ion and the change of external styling effectively.The metal ion layer of waiting to be adsorbed onto mold cavity surface takes out product and outer model (or inside and outside model) model thereof after reaching the thickness that designing institute needs, and opens or melt outer model model 1 (or inside and outside model) to obtain needed final product 2.

When adopting the present invention to make the metal art product, the moulding on metal inner and outer surface and decorative pattern can directly be controlled by model, can guarantee this sample attitude of its making precision and decorative pattern moulding, obtain technology and making effect that traditional electrocasting method and its kind casting technique can not reach, make product have more wide practicality and decorative use.

Claims

1, outer model model forming of metal plating and inside and outside model built-up pattern forming method is characterized in that: the metal plating forming model in the described method is the built-up pattern (4) of outer model model (1) or outer model model (1) and interior model model (3); The whole finished product form of the final product of described electrotyping forming method (2) or need accurately the finished product form and the casting system precision thereof of the molding surface of control, accurately control by forming model, above-mentioned by forming model (1) or (4) accurately final product (2) of control the finished product form or need the accurate finished product form of the molding surface of control can in casting system process, not break away from the intrinsic form randomly changing of model (1) or (4) regulation.

2, the described forming model of claim 1 (1) or (4), it is characterized in that: described forming model (1) is outer model model, promptly control or determine the model of final product (2) mode of appearance, appearance decorative pattern and form accuracy from the spatial shape opposite, relative with final product (2) external styling or decorative pattern, model (4) then is that whole controlled from final product (2) maybe need control or determine the finished product form of final product (2) and the built-up pattern of formed precision thereof by control face.Simultaneously, the process function of the interior model model (3) in this built-up pattern (4) also is different from the interior model model in traditional electrotyping forming method, the process function of model model (3) in built-up pattern (4) is in above-mentioned, with model (1) control or determine the inner face moulding, decorative pattern of the wall thickness of casting (2) and casting (2) or together with controlled of two ends, need the casting system precision of the moulding of control face, decorative pattern.And the above-mentioned process function of the process function of the interior model model in traditional electrotyping forming method and above-mentioned interior model model (3) is completely different, the basic technology function of the interior model model in the tradition electrotyping forming method is, with variable factors such as the power of electroforming apparatus and working hours, come the mode of appearance of casting (2) is carried out relative fuzzy moulding control with decorative pattern by the mode of control metal ion layer wall thickness, the inner face moulding of casting (2), decorative pattern, the process goal that the type precision is not traditional electrotyping forming method is made in casting, therefore neither this kind method in model Model Design and process function.

3, electrotyping forming model as claimed in claim 1 or 2 (1) or (4) is characterized in that: the molding material of described model (1) or model (4) is to need not fire-resistant, high temperature resistant but its corrosion resistance nature can guarantee that the mould form precision is not subjected to electroforming apparatus internal corrosion environmental influence and surmounts molding material and the combination thereof that design objective changes in casting system process.

4, as claim 1 or 2 or 3 described electrotyping forming model (1) or (4), it is characterized in that: described model (1) or model (4) but molding material be to be convenient to the molding material and the combination thereof of the demoulding or fusible pattern behind the finished product obtaining casting.

5, as claim 1 or 2 or 3 or 4 described electrotyping forming model (1) or (4), it is characterized in that: the molding material of described model (1) or model (4) is to have meticulous modeling ability and its moldings to be convenient to the molding material that duplicates with master mold or mechanical workout.

6, as claim 3 or 4 or 5 described molding materials, it is characterized in that: described molding material is any and the combination in silicon rubber, resin, gypsum, metal, paraffin, timber, plastics and other molding material.