The appropriate heat resistance level for a release agent should align with the customer’s operating conditions. For example:
If the mold has a complex structure and operates at high temperatures, a higher-temperature-resistant release agent is typically required.
However, if the mold’s temperature control system performs well, a release agent with slightly lower heat resistance may still be suitable—as long as it ensures clean demolding.
When using a release agent, the dilution ratio must be determined by its solid content and operational needs—not by absorbance measurements.
Different manufacturers use unique raw materials and formula proportions. Even for the same manufacturer’s product, varying solid content levels lead to significant performance differences.
If the test sample’s solid content deviates drastically, adjust the dilution ratio accordingly. Otherwise, over-concentrated application can result in a rough mold surface and potential yellowing.
Die-casting release agents are not a fix for all issues. Their primary functions are:
Enabling clean demolding.
Minimizing impacts on subsequent cleaning/coating processes.
Problems like severe casting deformation, mold cracking, or poor casting airtightness are generally tied to application technique(not the release agent itself).
To stabilize production, focus on mastering parameters like spray angle, spray distance, spray pressure, atomization effect, spray duration, and basic die-casting process settings.
It is best to dilute die-casting release agents with purified water. Tap water or groundwater is not recommended, as:
Tap water contains trace bacteria that can clog nozzles over time.
Groundwater is rich in minerals (e.g., calcium/magnesium ions) that promote carbon buildup on molds.
Die-casting release agents are not better when used more concentrated or more diluted. Optimal results come from:
Ensuring effective demolding.
Maintaining stable production.
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