Die Casting Factory: What is die casting?


Date:

2022-11-29

Die casting Die Factory says die casting die is a tool for casting metal parts and is a tool for completing the die casting process on a dedicated die casting die forging machine. The basic process of die casting is to pour liquid metal into the cavity of a die at a low or high speed. The die has a movable cavity surface. Using liquid metal cooling process to press forging, not only eliminates the shrinkage cavity and porosity defect of the blank, but also makes the internal structure of the blank reach the broken crystal in forging state. The comprehensive mechanical properties of the blank are obviously improved.

Die Casting Factory: What is die casting?

Die casting Die Factory says die casting die is a tool for casting metal parts and is a tool for completing the die casting process on a dedicated die casting die forging machine. The basic process of die casting is to pour liquid metal into the cavity of a die at a low or high speed. The die has a movable cavity surface. Using liquid metal cooling process to press forging, not only eliminates the shrinkage cavity and porosity defect of the blank, but also makes the internal structure of the blank reach the broken crystal in forging state. The comprehensive mechanical properties of the blank are obviously improved.

Die casting material, die casting machine and die die are the three main factors of die casting production. The so-called die casting process is the organic application of these three elements, so that the appearance, internal quality and size meet the requirements of the drawings or agreements, and qualified castings can be produced stably and efficiently, or even high-quality castings.

Die casting mold factory said that die casting mold design process: according to the product used by the type of material, product shape and precision and other indicators of the product process analysis, the development of the process flow. Determine the position of the product in the cavity, analyze and design the parting surface, discharge system and pouring system. Design the assembly and fixing method of each movable core. Core distance and force design. Design of ejection mechanism. Determine the design of die casting machine, die frame and cooling system. Check mold and die casting machine related dimensions, draw mold and parts of the process drawings. Completion of design

Common problems of die casting mold:

According to the die casting factory, the control of die surface temperature is the key to producing high quality die casting parts. Uneven or inappropriate die casting mold temperature will also lead to casting size instability, casting deformation in the production process, resulting in defects such as hot pressing, adhesive die, surface sag, shrinkage hole and hot air bubble. When the mold temperature difference is large, the variables in the production cycle such as filling time, cooling time, spraying time and so on will have different degrees of influence.

1) Cold line: The reason is that the temperature at the front of the molten soup is too low, and there are traces of overlap. Improvement: Check whether the wall thickness is too thin (design or manufacture). Thin areas should be filled directly; Check that the shape is not easy to fill; Too far away, closed areas (e.g. fins, bumps), blocked areas, too small rounded corners are not easy to fill. Note any ribs or cold spots. Shortening the filling time, shortening the filling time method; Change of filling mode; Method of increasing die temperature; Raise the temperature of the soup; Check the alloy composition; Adding escape routes might help; A vacuum device may be useful.

2) Crack: the cause is shrinkage stress; Split with force on ejection or edge completion. How to improve: More rounded corners; Check hot spots; Pressure time change (cold chamber machine); Increase or shorten the closing time; Increase the tensile Angle; Add a catapult pin; Check whether the mold is misaligned or deformed; Check the alloy composition.