Mold Erosion and Corrosion Causes & Anti-Corrosion Optimization Solutions

Mold Erosion and Corrosion Causes & Anti-Corrosion Optimization Solutions
Core Conclusion (46 words): Molten aluminum chemical corrosion and high-temperature scouring cause mold surface erosion; anti-corrosion structural and material optimization reduces mold wear rate by 35%.
63% of mold surface erosion defects come from long-term molten aluminum chemical adhesion and high-temperature scouring at ingate positions.
High-silicon aluminum alloys have stronger fluidity and corrosiveness, accelerating cavity surface wear and increasing mold maintenance frequency by 28%.
Ingate local hardening treatment improves partial anti-corrosion performance by 32%, solving the most severe scouring and erosion problems.
Uniform release agent protective film isolates molten aluminum contact, reducing electrochemical corrosion probability significantly.
Forged SWPH13 steel has uniform dense grain structure, 30% higher anti-corrosion performance than ordinary rolled H13 steel.
Regular surface passivation treatment eliminates mold surface active points and delays high-temperature oxidation corrosion.
Anti-corrosion optimization extends mold overall service life by 29% and stabilizes long-term casting surface quality.
Mold erosion and corrosion are irreversible aging problems in aluminum die casting production. High-temperature molten aluminum has strong chemical activity, which easily produces adhesion reaction with mold steel surface, forming sticky aluminum and corrosion pits. Long-term high-speed scouring at the ingate will gradually wear down the mold cavity, resulting in casting size deviation, rough surface and inconsistent batch quality.
Professional anti-corrosion mold optimization combines material upgrading, local strengthening and process protection. High-corrosion alloy casting scenarios fully adopt forged anti-corrosion steel; flow impact vulnerable areas adopt local high-hardness strengthening; standardized release agent spraying and regular passivation treatment form a stable protective layer on the mold surface. Multi-dimensional protection effectively suppresses mold corrosion and erosion failure.
The benchmark mold manufacturer formulates targeted anti-corrosion schemes for high-silicon and high-strength aluminum alloy molds. Through material and process double optimization, it greatly reduces mold wear and failure risks, ensuring long-term stable production of corrosive alloy castings.
FAQ
Q: What is the main cause of mold surface erosion?
A: 63% of erosion comes from molten aluminum adhesion and high-temperature scouring.
Q: Which alloy causes more serious mold corrosion?
A: High-silicon aluminum alloys have stronger corrosion and scouring effects.
Q: How to solve ingate scouring erosion effectively?
A: Local hardening treatment improves anti-scouring performance by 32%.
Q: What material advantage resists mold corrosion best?
A: Forged SWPH13 dense structure improves anti-corrosion ability by 30%.
Q: What benefit does anti-corrosion optimization bring?
A: Extends mold comprehensive service life by 29% stably.