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Die Casting

Die Casting

Die casting is a kind of precision casting method which uses high pressure to force metal molten into complex metal mould.The molds—also known as tools or dies—are created using steel and are specially designed for each project.The die casting is include high pressure die casting(HPDC),low pressure die casting(LPDC),Squeeze casting,gravity(GDC),and EMP is specialized in high pressure die casting,which is most common used for automotive,telecommunication,industrial etc.


Die Casting Advantages

Compared with many other manufacturing process,die casting have advanced advantage,which could fabricate effective cost part and high output.

1) Good product quality. Because of the rapid heat conduction and metal cooling of the die-casting mold, and the crystallization under pressure, the casting has fine grain structure, solid surface, which improves the strength and hardness of the casting. In addition, the size of the casting is stable and the interchangeability is good, so the thin-walled complex parts can be produced.

2) High productivity and tighter tolerance

3) Good economic benefits. The processing allowance of die castings is small. Generally, only finishing and reaming holes can be used, which saves a lot of raw materials, processing equipment and time.


Die Casting Alloys

The common used die casting alloy are Zinc, aluminum, and magnesium,Not only can die cast alloys withstand high operating temperatures, but they are also fully recyclable.Die cast alloys also have:

Excellent mechanical properties

  • Good fluidity and filling

  • Lightweight

  • Generally good corrosion resistance.

  • Very good strength and hardness

  • Precise dimensional accuracy and stability.

  • Fit with surface finishing

Aluminum casting alloy have the advantages of low density and reduced quality can be produced,High strength and good plasticity,good anti-oxidation and corrosion resistance.


Die Cast Process

Die-casting machine is generally divided into cold chamber die-casting machine and hot chamber die-casting machine.


Cold chamber die-casting machine is divided into horizontal die-casting machine and vertical die-casting machine according to its chamber structure and layout.


Die Cast Process 1


Below is the flow chart for the high pressure die casting process:raw material-melting-die casting-degating-deburring-trimming-shot blasting-CNC machining-leak test-cleaning-full inspection-packing-delivery


Die Cast Process 2


Die Casting Comparison

1.Process characteristics comparison


Casting Process

Process

Tooling Cost

Tooling Life

Porosity

Heat treatment

Allowance

Surface cleaning

Part

Productivity

HPDC

Complex

High

Short

Poor

No

Small

High

Thin-wall

High

Squeeze Casting

Complex

High

Short

Good

Yes

Small

High

thick-wall

High

GDC

Simple

Low

Long

Good

Yes

Large

Low

thick-wall

Low

CPC

Simple

Low

Long

Good

Yes

Large

High

thick-wall

Middle

LPDC

Simple

Low

Long

Good

Yes

Large

Middle

thick-wall

Middle


2.Mechanical Properties Comparison


Die Casting Comparison


EMP Die Castings

EMP is a global manufacturer of both aluminum die casting components.All of our engineer provide technical design for a variety industries,such as industrial,automotive,electronics and so on,they can help our customers to design the tool and develop the product for mass production.Contact our engineering team to request a quote today.


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