DIP CASTING

Rona Mae L. Taduyo

DEFINITION:

A casting process that involves repeatedly dipping a product or part of a product into resin.

Commonly used resin material (for metals): extremely low-melting metals (such as lead, tin and zinc )(for plastics): Vinyl plastisol

Dip Casting is a thermo-fusion process in which a hot metal mold or object is dipped into a room temperature liquid plastic. This process may also be called DIP MOLDING.

DIP MOLDING PROCESS

used in metal, rubber, and plastic industries. it essentially consists of dripping a shaped

pattern into fluid material and withdrawing it. used extensively to form thin metal cases in

which plastic parts maybe mounted. frequently used to put a plastic coating over

metal objects to give weather-resistant coatings. The toy balloon is an example of a dip-molded rubber product.

DIP MOLDING PROCESS

The pattern is quickly withdrawn, leaving a thin coating on the pattern.

PRODUCTS

Tool handles Cleaning (rubber) gloves Balloons Doll parts Electronic parts (for insulation) Plastic Caps, Grips, and Plugs

ADVANTAGES

it is fast requires very little

equipment inexpensive

DISADVANTAGES

inaccuracy poor control of wall

thickness poor strength. in electronic industry,

only the extremely low-melting metals are being used (such as lead, tin and zinc)

generally restricted to the Zinc- and Aluminum-based alloys.

END