Temperature Control in Die Casting Is Critical


In die casting, how hot does the metal get? It all depends on the metal you use and how closely you adhere to die casting standards in terms of temperature

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In die casting, how hot does the metal get? It all depends on the metal you use and how closely you adhere to die casting standards in terms of temperature.   Is the temperature of the die casting mold important? That is unquestionably true! Controlling the temperature of the die casting process is essential if you want to avoid die casting defects and other problems.  

When it comes to die casting, it is critical to understand the differences between metals when it comes to temperature control, as well as the consequences of poor temperature control during the die cast process.  

In die casting, there are several general effects of temperature

In general, the tensile and yield strengths of Die Casting Process Steps casted alloys decrease as the temperature of the alloy increases.   Keeping this fact in mind will be critical if you require parts with strong shear tensile strength.   Dexterity increases as temperature increases, but this varies depending on what alloy is being die cast and what temperature it is at.   For example, aluminum is less ductile than zinc, but the process temperature for aluminum must be higher than the process temperature for zinc to be effective. 


In Die Casting, there are several thermal factors to consider

Temperatures of the alloy used in die casting, the temperature of the die itself, and the temperature of the die casting machine are all considered thermal factors in the process of die casting.   All of these variables must be maintained within an optimal temperature range in order to produce the highest-quality parts.   If the temperature of the molten metal is too high for the mold, it can cause premature heat checking on the mold steel, which can cause the mold to fail prematurely and cause damage.   If the mold temperature is too low, it may cause the temperature of the metal to drop too quickly as it flows into the mold, resulting in defects — particularly greater porosity or misruns on the casting surface — if the temperature of the metal is low enough.  



Die Casting Temperatures to Take into Account

The alloy should be about 50 to 70 degrees F higher in temperature than the initial crystallization temperature in order to avoid putting strain on the mold.   To keep the mold itself at approximately one-third of the alloy temperature, it must be heated to a high temperature.   Choosing the proper temperature for the casting chamber is an intricate calculation that will be performed by the casting engineering team.  

 

 

 

What Does Temperature Have to Do with Different Die Casting Metals?

So, what effect does temperature have on the various metals used in die casting?.  .  .  Here are a few examples that you might find useful.  

Aluminized aluminum is a metal that is used to make airplanes and other structures.  

In the metal die casting industry, aluminum is one of the most widely used metals.   It is lightweight, long-lasting, and corrosion-resistant due to its nickel alloy composition.   Aluminum alloys 360, 380, and 413 are the most commonly used for die casting.  

You'll find that the tensile strength of Aluminum 380 when bending at 75 degrees is 48 and the yield strength is 24 for this alloy.   When the temperature is raised to 212 degrees, the tensile strength increases to 45 KSI (Kips Per Square Inch), while the yield strength remains constant at 24 degrees.   Yield strengths for Aluminum 390 range from 41 KSI at 500 degrees down to 18 KSI at a lower temperature.  

zinc is a chemical element that has a wide range of applications.  

Zinc is yet another die casting alloy that is extremely popular.  .  .  .  Zamak 3, 5, and 7 are some of the most common and most popular zinc alloys.  

For these alloys, a temperature of 75 degrees produces an average KSI of 40, whereas a temperature of 275 degrees produces an average KSI of as low as 10 for the same alloy.   Similarly, the yield strength of other zinc alloys decreases as the temperature rises as well.  

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