die casting - advantages and disadvantages - disadvantages of die casting

by:Hanway     2019-08-31
die casting - advantages and disadvantages  -  disadvantages of die casting
Die casting is the process of forcing the molten metal into the mold cavity under high pressure.
The metal is hardened to obtain an ideal shape.
Recently, plastic molding parts have replaced the mold
Casting because they are cheaper and lighter than die-casting parts. Die-
Casting can be done using a cold or hot chamber process.
Die casting is a common non-die casting process.
The consumption technology of metal being forced into the cavity under high pressure.
Die Casting molds known as molds can be reused for the production of castings of various sizes, shapes and wall thickness.
The mold cavity adopts a complex design that enables the production of complex shapes with precision, surface finish and attraction. .
The die-casting history of the early die-casting is only low-
Using a high-pressure injection method, but it's high today.
Pressure casting technology such as extrusion casting and semi-extrusion casting
Solid die casting method, casting more than 4500 pounds per square inch.
Originally, only tin and lead were mold castes, but now also cast magnesium, copper and other alloys using this very popular process.
During this process, liquid metal or other materials are forced into the cavity of the steel mold under high pressure.
The mold is two-part mold made of Alloy Tool Steel
Half of the fixed mold and half of the top Rod mold.
The mold or mold is made with the impression of the part to be cast.
There are four types of molds: a single cavity produces one component, multiple cavities produce multiple identical part unit molds, and a combination mold produces different parts at one time, produce several different parts pressure and high speed for the assembly, which helps to produce castings as smooth and precise as the original mold.
Keep the pressure on the mold until the hot metal sets.
When the metal is hardened, open the mold to remove the casting.
There are several variations in the basic process that can be used to produce castings for specific applications.
Including: extrusion casting
A method of casting a molten alloy at high pressure without creating turbulence and gas trapping to produce a high quality, dense, heat-resistant component. Semi-solid molding -
One and a half
Cast solid metal blanks are intended to provide dense, heat-treated castings with a low porosity.
Alloys for aluminum, copper, lead, zinc and tin-based alloys are mainly used for moldscasting.
In modern times, Precision Die Casting machines are used to ensure consistent quality control.
Each processing mold
Casting varies in the way the molten powder is poured into the mold.
The automatic device is used to lubricate the mold, pour the metal into the chamber, etc.
The two processes used in die casting are called hot chamber and cold chamber methods.
The application of die casting is most suitable for medium-sized parts with complex casting details. Die-
Casting is the largest casting technology used to manufacture consumer goods, commercial and industrial products such as cars, toys, sink faucet parts, connector housing, gears.
Most die castings are from non-
Black metal such as aluminum and magnesium.
Economic processes that can be used in a variety of complex applications with longer service life, dimensional accuracy and post-processing close to tolerance can completely eliminate fully automated processes, and molds can be reused.
The casting weight must be between 30g.
Castings must be less than 600mm (24 in)
High initial cost. High Limit-Liquid metal.
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