After the mold is built it must be checked whether the cooling system of a mold is sealed and working properly. This test is called Leak tightness test. The temperature control circuit is examined for leaks to ensure that no cooling fluid escapes and that heat transfer remains efficient. Common testing methods include pressure testing with air or water as well as leak detection using specialized test fluids. Leaky temperature control circuits can lead to uneven cooling, increased scrap rates, and production disruptions. Regular leak tightness tests help prevent mold damage and ensure consistent part quality. Especially in high-precision applications, flawless temperature control is crucial for maintaining dimensional accuracy in injection-molded parts.
Quality: Leak test of a circuit with hand pump
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