CN1031575A

CN1031575A - New technology of galvanoplasty

Info

Publication number: CN1031575A
Application number: CN 87104135
Authority: CN
Inventors: 焦发兆
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-06-11
Filing date: 1987-06-11
Publication date: 1989-03-08
Also published as: CN1005999B

Abstract

The present invention relates to a kind of electrocasting method.It is characterized in that doing parent form with gypsum, on parent form, wax, be put on the wax layer with the gypsum muddle again and dry, at wax layer top casting low melting point alloy, melt plaster statue then, put into electrolytic solution, this method production technique is simple, cost is low, be suitable for producing in enormous quantities, can be in order to the cast copper word, and particularly technology word, bronze, brass or copper ware modelled after an antique, copper mould, and artwork.

Description

New technology of galvanoplasty

The present invention relates to a kind of electrocasting method, particularly relate to and a kind ofly make various brass works with electrocasting method.

Employed electrocasting method is a lot of in the prior art, for example retrieve Japanese Patent, its patent No. is clear 56-70908, and method is to make parent form with stainless steel, electroforming-layer nickel, then the parent form of nickel plating is put into lead, tin, the antimony solution of semi-melting state, taken out parent form, can obtain electroforming with the pressurizing tool compression casting, its method complexity, the cost height, and the shape of part and product had certain requirement, can not do the product of arbitrary shape.

The objective of the invention is to: a kind of electrocasting method of new wall is provided, can electroforming go out the method that different shape is given birth to product, and technology is simple.

Performing step of the present invention is: make parent form with gypsum material, be coated with in parent form outside then cured, about its thickness 2-5mm.Its inversion is hung, container of underneath can hold the cured parent form that is coated with of hanging just again, then at container be coated with between the full parent form, waters the pasty state gypsum, or smears gypsum, makes it be full of entire container; At this moment with low-melting melting of metal, water on cured layer, metal will fuse cured, because cured light specific gravity, metal will replace cured and be included on the parent form, cured then outflow.This moment parent form is held and separated taking-up, in low-melting metal casing, pour into electrolytic solution, electrolytic metal is put into electrolytic solution, being a utmost point with electrolytic metal, low-melting metal casing is a utmost point, connects power supply, when treating that metal on the low melting point metal shell is cast desired thickness, power supply is turned off, take out electrolytic solution and remaining, the gypsum of metal casing outside is dissolved away, again the low melting point metal shell is also melted or knock out by electrolytic metal, such replica the same with parent form, and become the reproduction of metal.

The product that adopts present method to produce is not limited by its shape, can cast out big or little or complex-shaped unmanageable product arbitrarily, and method is simple, and cost is low, but hollow, solid all electroforming are applicable to the casting characters in a fancy style, casting process product and bronze, brass or copper ware modelled after an antique; Casting mould etc.

Be that example specifies with a brass work below:

At first make a gypsum parent form, for example make a plaster statue (1), the thick cured layer (2) of 2mm is coated in plaster statue (1) outside, except that the gypsum base, all be coated with full, then with its inversion, base makes progress and hangs, a removable wooden case of underneath (4), make seating plane concordant with the case actinal surface, gypsum (3) is carried out pasty state to be watered in the space of plaster statue (1) and chest (4), oven dry is again with low-melting alloy lead, tin alloy (5) fusion is watered on outer cured (2) of plaster statue (1), plaster statue (1) water is dissolved away again, in metal casing (5), pour into electrolytic solution (7), put into copper rod (6), do the two poles of the earth respectively with metal (5) and copper rod (6) and connect power supply, electroforming begins, treat to turn off when electroformed layer reaches the thickness that 1-10mm needs power supply, electrolytic solution (7) and copper rod (6) are taken out, gypsum (3) and metal (5) are knocked out again, a bronze statue can duplicate out.

Claims

1, the brass work manufactured of a kind of electrocasting method is characterized in that this method is to do parent form with gypsum, is coated with curedly at the parent form outer wall, is inverted then and hangs, and puts a container below, again the pasty state gypsum is put into container and is coated with between the space of cured parent form and fill up; After casting in low melting point alloy on the cured layer, take out parent form, pour electrolytic solution into, place copper rod, do the two poles of the earth respectively with copper rod and low melting point metal.

2, electrocasting method according to claim 1 is characterized in that: cured layer thickness can be 2-5mm.

3, the brass work manufactured of a kind of electrocasting method, it is characterized in that: the brass work with this method electroforming can be copper word, copper artware, brass work modelled after an antique, or copper mould.