Custom Silicone Vacuum Casting Prototype

Custom Silicone Vacuum Casting Prototype

Machining Method :

cnc machining

Surface Finish :

polishing , painting

Working Day:

about 7 days

MOQ:

1 piece

Payment :

50% when place order + 50% before delivery

Delivery Time :

1 week also

Material:

plastic-abs;pp;pa;pom;pmma;pc;pbt;nylon;pps;wood;

Color of material :

color of material; natural; white; black; transparent

Surface Treatment:

painting; chrome plating; silk screen; polish; highly polished etc

Machining Method :

cnc machining

Surface Finish :

polishing , painting

Working Day:

about 7 days

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Supplier Info.

Company Name： FuJia Prototype Model Design Co., Ltd

Registration Date： 2003

Country / Region： guangdong / China

City： shenzhen

Main Products： rapid prototyping services, cnc machining, prototype model

Product Detail

◆◆ Product Information

Vacuum Casting

◪ The vacuum casting technology uses a prototype of the product (rapid prototype, CNC prototype) to make a silicone mold under a vacuum, and uses a PU material to be poured under vacuum, thereby cloning the same replica as the prototype.
◪ The vacuum casting technology can be applied to change the material of the prototype, assemble the prototype or carry out small batch production of the product to meet the requirements of performance testing, marketing, inspection and approval in the product development process.

Vacuum casting has many advantages, as follows:

Name	Original Colour	Characteristics
Baked Porcelain	Transparent	Similar to PMMA, crisp transparency, non-resistant to high temperature, prone to discoloration over time
PX-100	Ivory	Similar to ABS, general toughness, temperature resistant up to 70oC
PX-100	Black	Similar to ABS, general toughness, temperature resistant up to 70oC
PX-210	Transparent	Similar to PC, good toughness, strength and shape retention
PX-215	Ivory	Similar to ABS, general toughness, temperature resistant up to 70oC
PX-226	White	Good shape retention, high-temperature resistance, shock resistant
PX-521	Transparent	Similar to PC and PMMA, malleable, hard, temperature resistant up to 110 0C
PX-522	Transparent	Similar to PC and PMMA, malleable, hard, temperature resistant up to 110 0C
PU-4280	Beige	Similar to ABS, good toughness, low shrinkage, temperature resistant up to 90 oC
PU-5672	White	Similar to PP, high shock resistance, low shrinkage, long lifespan
PU-5673	White	Similar to PP, high shock resistance, low shrinkage, long lifespan
PU-6160	White	High-temperature resistance, easily painted, very high accuracy duplications
PU-8260	White	Similar to ABS, general malleability, flame retardant grade VO
PU-8901	White/Black/Transparent	Similar to ABS, general malleability, hard and tough, temperature resistant up to 135 oC
PU-8400	White/Black	Similar to EDPM rubber, can be painted, colors can be chosen when casting
PU-8012	Yellow	Similar to ABS, low toughness, crisp
PU-8014	Ivory	Similar to PU-8012, characteristics slightly better, slightly closer to ABS
PU-8150	Off White	Similar to ABS, tough, temperature resistant up to 100oC
DPI-041	Transparent Rubber	Easily operable, good malleability, prone to discoloration
DPI-700	Black Rubber	Similar to ABS, good shape retention, tough, hard, good malleability, temperature resistant to 135 oC
DPI-090	Transparent Rubber	Similar to ABS, good shape retention, tough, malleable, high transparency
DPI-410	White Rubber	Similar to PP/PE, good shape retention, tough, malleable
DPI-035	Transparent Rubber	Low discoloration, easily operable, tough
DPI-430	White Rubber	Similar to ABS, tough, malleable, hard
Silicon Rubber	T-4	Transparent, low shrinkage, durable, ok up to 18; reproductions only, oily
Silicon Rubber	8678	Transparent, good elasticity, ok up to 15 reproductions, quick-drying
Silicon Rubber	803	Ivory white, high shrinkage, durable, ok up to 12 reproductions
Silicon Rubber	300#	Ivory white, low shrinkage, durable, ok up to 12 reproductions

◆◆ Steps

The Advantages of SLS Rapid Prototyping

◎ Before the production of Vacuum Casting, we need to make a sample by CNC machining or 3D printing.
Then mix silicone with a curing agent. The appearance of Vacuum Casting is a flowing liquid, component A is Silicone, component B is a curing agent.
◎ Vacuum evacuations
After the silicone and curing agent are mixed evenly, vacuum evacuation is performed. The time for vacuuming should not be too long. Under normal circumstances, do not exceed 10 minutes. If the vacuum is too long, the silicone will cure immediately. The cross-linking reaction was produced so that the silica gel became one piece and could not be painted or poured.
◎ Brushing or operation process
Pull the evacuated silicone on the sample by brush or pour. (Note: The product or model to be copied need to use release agent before pouring the silicone). Then brush the silicone on the top of the product, brushing must be uniform, after 30 minutes, paste a layer of gauze fiber weft cloth to increase the strength and tensile of silicone.
◎ Outer mold production
Generally used methods and materials are surrounding the mold by a plastic sheet or wood, then fill mold cabinet with plaster. Another method is to brush a layer of resin then paste a layer of the glass fiber cloth, then brush and then paste, repeated two or three layers can complete the mold outside.
◎ Filling or pouring mold operation method
Filling or pouring mold is used for relatively smooth or simple products, no mold lines saves time and labor.

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