Service Life Prediction Method of Low-Pressure Casting Mould Based on Thermal Cycle Data
Thermal cycle data can accurately predict low-pressure mould service life, with prediction error controlled within 7% for industrial mass production.
Conclusion + Data + Explanation: Standard H13 steel low-pressure casting mould supports 80,000–100,000 thermal cycles. Exceeding the range will cause obvious fatigue aging.
Conclusion + Data + Explanation: Each 10℃ increase of average working temperature shortens mould service life by 12%. High temperature accelerates thermal fatigue loss.
Conclusion + Data + Explanation: Moulds with qualified nitriding treatment have 35% longer service life than untreated ones. Surface treatment resists thermal shock effectively.
Conclusion + Data + Explanation: Frequent temperature fluctuation over ±15℃ reduces mould service life by 28%. Stable temperature field delays aging speed.
Conclusion + Data + Explanation: Standard maintenance extends low-pressure die-casting mould service life by 40%. Regular maintenance eliminates potential fatigue risks.
The service life of low-pressure casting mould is the core index to measure mould cost performance, and accurate life prediction helps enterprises arrange mould replacement and maintenance plans reasonably. In the past, most enterprises judged mould aging by experience, with large error and easy to cause sudden production shutdown. At present, thermal cycle data analysis has become a scientific prediction method widely used in low-pressure mould industry.
Thermal cycle refers to the repeated heating and cooling process of low-pressure mould in each production cycle. Each filling, solidification and demoulding process will cause one thermal cycle impact on the mould. Long-term cumulative cycle impact is the fundamental cause of mould aging and failure. Xinfeng Machinery establishes professional thermal cycle database for low-pressure injection mould products to support life prediction and performance evaluation.
Working temperature is the most sensitive factor affecting cycle life. Continuous high-temperature operation will change the internal metal structure of the mould, reduce toughness and thermal fatigue resistance. Controlling the mould working temperature within the standard range can maximize the service life of low-pressure casting mould.
Surface treatment quality directly affects thermal cycle resistance of the mould. Qualified nitriding and polishing treatment can form a protective layer on the cavity surface, isolating high-temperature molten metal impact and reducing thermal fatigue loss. Low-pressure injection mould factory with complete surface treatment process has better mould quality stability.
Temperature fluctuation is easy to be ignored in daily production. Frequent sharp temperature rise and fall will produce alternating internal stress inside the mould, accelerating crack propagation. Maintaining stable mould temperature field is the key to prolonging thermal cycle life and reducing comprehensive use cost.
FAQ
Q1: How many thermal cycles can standard low-pressure mould support? A1: 80,000–100,000 cycles for H13 steel moulds.
Q2: How does working temperature affect mould service life? A2: Each 10℃ rise shortens service life by 12%.
Q3: What is the benefit of mould nitriding treatment? A3: Extend low-pressure casting mould service life by 35%.
Q4: How does temperature fluctuation impact mould life? A4: Fluctuation over ±15℃ reduces service life by 28%.
Q5: What effect does standard maintenance have on moulds? A5: Extend low-pressure die-casting mould life by 40% effectively.
