CN106623781A

CN106623781A - Novel fast wax mold forming process for statue casting

Info

Publication number: CN106623781A
Application number: CN201611011783.9A
Authority: CN
Inventors: 杨范龙
Original assignee: Hunan Ming Art Sculpture Co Ltd
Current assignee: Hunan Ming Art Sculpture Co Ltd
Priority date: 2016-11-18
Filing date: 2016-11-18
Publication date: 2017-05-10
Anticipated expiration: 2036-11-18
Also published as: CN106623781B

Abstract

The invention discloses a novel fast wax mold forming process for statue casting. The novel fast wax mold forming process comprises the steps that two female molds are made with 20-degree silicone rubber on a statue prototype; plasticine is pasted on the inner walls of the silicone rubber female molds evenly; 50-degree silicone rubber is smeared on the surface of the plasticine evenly, and a mold core is formed; synthetic wax is made and is smeared on the mold core; and wax injection is conducted. According to the novel fast wax mold forming process, the wax is formed through one-time casting, the number of times of casting is reduced, and the wax mold forming speed is increased. The 20-degree silicone rubber is adopted for mold overturning of the statue prototype, and the flexibility is good. In order to effectively reduce deformation of the wax mold, the 50-degree silicone rubber is adopted for the mold core, deformation does not occur to the mold core in subsequent vacuumizing treatment, and the forming rate of the wax mold is ensured effectively. The components of the synthetic wax are proportioned reasonably, the contraction rate of the wax mold is lowered, the surface smoothness of the wax mold is improved, meanwhile, the forming thicknesses of the female molds, the mold core and the wax mold are controlled precisely, before casting, the mold core is brushed with one layer of synthetic wax first, the temperature of casting of the synthetic wax can be lowered, and contraction is reduced.

Description

A kind of wax-pattern rapid shaping new technology for statue casting

Technical field

The present invention relates to modern art statue casting technology field, more particularly to a kind of wax-pattern for statue casting is quick Forming process.

Background technology

In the casting technique of modern art statue, lost-wax casting is common technological measure, and lost-wax process includes the system of wax-pattern Preparation, dewaxing, melting, cast and the demoulding post processing of shell, wax-pattern prepares the first step made waxed as mistake, the system to statue Make particularly important, in existing shaping investment pattern technique, it is often necessary to which 5 to 6 wax materials are poured into a mould in Wax mold can just obtain sky The wax-pattern of the heart, this process speed is slow, wax-pattern uneven thickness, and then causes the phenomenons such as statue shrinkage cavity and porosity, and yield rate is low, matter Measure bad, cost increase.

The content of the invention

It is an object of the invention to provide a kind of shaping investment pattern efficiency high, the measured wax-pattern for statue casting of wax-pattern matter Rapid shaping new technology.

For achieving the above object, the present invention is adopted the following technical scheme that：A kind of wax-pattern for statue casting is rapid-result soon Type new technology, it is characterised in that comprise the following steps：

Step one, make that thickness is 2-3mm in statue prototype with 20 degree of silicon rubber two drive former, its external application fiberglass Set off mould；

Step 2, in silicon rubber former inwall 2-3mm plasticine is uniformly pasted；

Step 3, uniformly smears 2-3mm thick with 50 degree of silicon rubber on plasticine surface, makes hollow silicon rubber mould core, After colloid solidification, plasticine is taken out, clear up core rod；

In the step process, can batch making silicon rubber core rod, to make wax-pattern, after having cleared up former, directly Connect and be put into core rod and casting, improve and make wax-pattern efficiency.

Step 4, modulation cast synthesis wax material used, the synthesis wax material is made up of the raw material of following mass percent： Paraffin 85%, rosin 10%, lignite wax 3%, low molecular polyethylene 2%；Above-mentioned raw materials are mixed, 80-95 DEG C is heated to, Stirring 5min, stirring is fully and uniform into pasty state；

Step 5, described in silicon rubber mould wicking surface uniform application 1-1.5mm wax material is being synthesized, and then core rod is assembled in into the moon In mould；

Step 6, by synthesis wax material 120 DEG C are heated to, and in being poured into the die cavity that silicon rubber former and core rod are formed, are put into Vacuum chamber, under the pressure condition of -0.8MPa 2-3min is vacuumized；After releasing vacuum, after wax material solidification to be synthesized, the demoulding is obtained To the wax-pattern with silicon rubber core rod；

Step 7, cleaning former moisture, wax bits, is put into silicon rubber core rod, after smearing synthesis wax material, casting again.

Preferably, in step 5, using shop bolt by core rod clamping in former.

Preferably, low molecular polyethylene is from the low molecular polyethylene that density is 0.9.

Beneficial effects of the present invention：1st, wax material of the present invention adopts one-time cast-forming, reduces cast number of times, improves wax Mold forming speed；2nd, statue prototype overmolded adopts 20 degree of silicon rubber, and pliability is good；3rd, effectively to reduce wax-pattern deformation, core rod is adopted With 50 degree of silicon rubber, in process is subsequently vacuumized, core rod is indeformable, and the ratio of briquetting of wax-pattern is effectively ensured；4th, rational proportion is closed Into wax material composition, wax-pattern shrinkage factor is reduced, wax pattern surface smoothness is improved, while the shaping of precise control former, core rod, wax-pattern Thickness, before cast, first brushes one laminated into wax material on core rod, advantageously reduces the temperature of cast synthesis wax material, reduces and shrinks.

Specific embodiment

With reference to embodiment, the invention will be further described.

Embodiment 1

A kind of wax-pattern rapid shaping new technology for statue casting, it is characterised in that comprise the following steps：

Step one, make that thickness is 3mm in statue prototype with 20 degree of silicon rubber two drive former, and its external application fiberglass does Set off mould；

Step 2, in silicon rubber former inwall 3mm plasticine is uniformly pasted；

Step 3, uniformly smears 2mm thick with 50 degree of silicon rubber on plasticine surface, makes hollow silicon rubber mould core, treats After colloid solidification, plasticine is taken out, clear up core rod；

Step 4, modulation cast synthesis wax material used, the synthesis wax material is made up of the raw material of following mass percent： Paraffin 85%, rosin 10%, lignite wax 3%, density is 0.9 low molecular polyethylene 2%；Above-mentioned raw materials are mixed, plus Heat stirs 5min to 80 DEG C, and stirring is fully and uniform into pasty state；

Step 5, synthesizing wax material described in silicon rubber mould wicking surface uniform application 1.5mm, then using shop bolt by mould Core clamping is in former；

Step 6, by synthesis wax material 120 DEG C are heated to, and in being poured into the die cavity that silicon rubber former and core rod are formed, are put into Vacuum chamber, under the pressure condition of -0.8MPa 2min is vacuumized；After releasing vacuum, after wax material solidification to be synthesized, the demoulding is obtained Wax-pattern with silicon rubber core rod；

Embodiment 2

Step one, make that thickness is 2mm in statue prototype with 20 degree of silicon rubber two drive former, and its external application fiberglass does Set off mould；

Step 2, in silicon rubber former inwall 2mm plasticine is uniformly pasted；

Step 3, uniformly smears 3mm thick with 50 degree of silicon rubber on plasticine surface, makes hollow silicon rubber mould core, treats After colloid solidification, plasticine is taken out, clear up core rod；

Step 4, modulation cast synthesis wax material used, the synthesis wax material is made up of the raw material of following mass percent： Paraffin 85%, rosin 10%, lignite wax 3%, density is 0.9 low molecular polyethylene 2%；Above-mentioned raw materials are mixed, is heated To 95 DEG C, 5min is stirred, stirring is fully and uniform into pasty state；

Step 5, synthesizing wax material described in silicon rubber mould wicking surface uniform application 1mm, then using shop bolt by core rod Clamping is in former；

Step 6, by synthesis wax material 120 DEG C are heated to, and in being poured into the die cavity that silicon rubber former and core rod are formed, are put into Vacuum chamber, under the pressure condition of -0.8MPa 3min is vacuumized；After releasing vacuum, after wax material solidification to be synthesized, the demoulding is obtained Wax-pattern with silicon rubber core rod；

Claims

1. it is a kind of for statue casting wax-pattern rapid shaping new technology, it is characterised in that comprise the following steps：

Step one, make that thickness is 2-3mm in statue prototype with 20 DEG C of silicon rubber two drive former, and its external application fiberglass is served as a contrast Support mould；

Step 2, in silicon rubber former inwall 2-3mm plasticine is uniformly pasted；

Step 3, uniformly smears 2-3mm thick with 50 DEG C of silicon rubber on plasticine surface, makes hollow silicon rubber mould core, treats glue After body solidification, plasticine is taken out, clear up core rod；

Step 4, modulation cast synthesis wax material used, the synthesis wax material is made up of the raw material of following mass percent：Paraffin 85%, rosin 10%, lignite wax 3%, low molecular polyethylene 2%；Above-mentioned raw materials are mixed, 80-95 DEG C is heated to, stirring 5min, stirring is fully and uniform into pasty state；

Step 5, described in silicon rubber mould wicking surface uniform application 1-1.5mm wax material is being synthesized, and then core rod is assembled in into former In；

Step 6, by synthesis wax material 120 DEG C are heated to, and in being poured into the die cavity that silicon rubber former and core rod are formed, are put into vacuum Room, under the pressure condition of -0.8MPa 2-3min is vacuumized；After releasing vacuum, after wax material solidification to be synthesized, the demoulding obtains band The wax-pattern of silicon rubber core rod；

2. it is according to claim 1 for statue casting wax-pattern rapid shaping new technology, it is characterised in that step 5 In, using shop bolt by core rod clamping in former.

3. it is according to claim 1 for statue casting wax-pattern rapid shaping new technology, it is characterised in that described low point Sub- polyethylene is from the low molecular polyethylene that density is 0.9.