Pressure die casting is a competitive casting method when the components are needed at high volumes or when better tolerances and surface finish are required than can be achieved by gravity die casting. The need for machining is very low due to the close casting tolerances. Heat treatment of pressure die casting is not possible but due to the high rate of solidification, the mechanical properties are very good.

In numerous casting alloys, the aluminum casting part is lighter and has better ability to endure a higher temperature condition during operation. The aluminum die casting not only has higher intensity and rigidity, but also shows the premium ability of corrosion resistance, therefore, it is an ideal product which are used in all kind of harsh environment. If a special surface coating is needed, anodizing is an ideal choice.

 


MPi's R&D staff is skillful in all aspects of the die casting process. Our main focus is on application of the latest technology in order to properly control feeding of castings during their crystallization/solidification in the interdendrical space, which is crucial to obtain the required compactness of structure of the cast alloy. In addition, we also concentrate on die gating and metal flow design in the elimination of shrinkage of macro/microporosity, as well as advanced manufacturing process and part quality improvement.


A major reason for process down time and loss of casting quality in aluminum die-casting is failure of the dies due to inadequate filling, soldering, and ejection problems. The primary cause for the soldered metal is the tribochemical interaction between the molten aluminum alloy and the die steel surface which results in intermetallic formation and adhesion. An investigation has shown that use of die surface nitriding can reduce this interaction. It is found that nitriding not only reduces the intermetallic formation at the surface but also its wettability that reduces the adhesive forces between the soldered material and the treated surface. This probably is due to the greater energy of the nitrided surface and due to the formation of ferrous nitrocarbides that have lower reactivity with the molten aluminum alloy.

Ion nitriding is an extension of the conventional nitriding process using the plasma-discharge physics. In our vacuum chamber, high-voltage electrical energy is used to form plasma through which nitrogen ions are accelerated to impinge on the workpiece.


MPi offers a full service die-cast solution by designing and manufacturing zinc and aluminium die casting components for food processing industries, window and door fittings, automobile & motorcycle components, electrical wiring fittings, electronics and telecommunications industries, communication equipment, household appliances, building hardware, machine tools as well as security and lock industries.

Light weight
High dimensional stability for complex shapes and thin walls
Good corrosion resistance
Good mechanical properties
High thermal and electrical conductivity
Great strength at high temperatures

High impact strength
High ductility
Easily coated
Economical for small parts
Low melting point
Long die life

High strength
Corrosion resistant
Heat resistant
High conductivity
Deluxe look
Complex and precise shapes