Thermal Flow Control Solutions – Die Casting Process


In die casting, one of the most important factors to consider is temperature control. In die casting, the yield and tensile strengths of the alloy decrease in die casting, when there is an increase in temperature. Depending on the type of alloy, the increase in temperature also increases ductility.
Both the metal and die that require casting depend on the proper temperature. To ensure that there is proper mold fill and flow, you need to heat the cast metal correctly. The mold may get damaged if the molten metal is too hot. A defect may also occur if the mold is too cold, causing the flowing molten metal to cool down quickly. That’s why you need to use the right coolant flow meter.

Importance of temperature in die casting 

In the die casting, there are various temperatures that require close and regular monitoring using a cooling flow meter. They include:

  • The high temperature of the alloy used for casting
  • The temperature of the die casting chamber or casting machine 
  • The temperature of the die itself

If you want to produce high-quality die-cast parts, you need to ensure that all these temperatures are constantly or closely monitored with a proper coolant flow meter. 

Which temperature is proper to die? 

The type of alloy you want to cast will determine the die temperature. What you need to do is avoid stressing the die. Putting excess strain on your die will reduce your life expectancy of the die. The best item to do is to pour the alloy into your die when it is about 50° to 70° degrees higher than the alloy’s crystallization temperature. At about a third of the temperature of the alloy, you need to maintain the die temperature using a coolant flow meter. 

What temperature should the die casting machine or chamber be?

You need to consider many things to come up with a proper temperature for the die casting chamber/machine. Factors that determine the temperature include die type, alloy type, cast part size, and more. An experienced die caster is required to determine the proper machine or chamber temperature using the proper coolant flow meter. 

What temperature is best for the alloy? 

The material will determine the best temperature for the alloy. Since there are various kinds of materials used, the temperature will greatly vary. Below are two examples of die-cast alloys that are quite common:


For die-casting aluminum, 360, 380, and 413 are the most popular metal choices. What makes aluminum a great alloy is its lightweight, durable, and corrosion-resistant nature. You will need to get a tensile strength of 48 at 75° with a yield strength of 24 KSI when casting aluminum 380. In case you want to increase the temperature to 212°, the yield strength will remain the same constant at 24, while the tensile strength will switch to 45 KSI. 


Other popular die casting alloys are zinc 3, 5, and 7. At an average of 40 KSI, a temperature of 75° is produced for these zinc alloys. You will produce an average KSI of around 10 by increasing the temperature to 275°. 

What causes incorrect temperatures? 

The mold is likely to get damaged if the metal being cast is too hot. This reduces the effectiveness and the lifespan of the mold when the wrong cooling flow meter. When the metal cools quickly while flowing into the mold, it will cause a defect if the temperature is too low. 


Proteus Industries knows how important temperature control is when it comes to dying casting. That is why design and manufacture the best thermal control devices in the industry. When the temperature is regulated and monitored properly, it creates perfect finished parts. There are many factors that determine temperature when it comes to dying casting. They include the type of alloy, the type of die, and the type of material used. You can count on Proteus for high-quality thermal control and flow meters. 

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