Products with leak sealing treatment

AN OPTIMAL SOLUTION FOR COMPONENTS REQUIRING ABSOLUTE AIRTIGHTNESS AND HIGH PRESSURE RESISTANCE

During aluminum casting processes - particularly for components with complex geometries or stringent dimensional and functional requirements - microscopic gas voids (porosity) may inherently form. Although these defects are not visible to the naked eye, they can significantly impair airtightness, pressure resistance, and operational safety throughout the product’s service life.

What is impregnation technology (含浸処理)?

Impregnation treatment (also known as vacuum impregnation - 含浸) is an advanced sealing process that employs specialized impregnants in combination with controlled vacuum and pressure cycles. This process enables the impregnant to penetrate deeply into microscopic pores and internal voids within metal components. Once penetration is complete, the impregnant is thermally or chemically cured, permanently sealing internal porosity and ensuring complete leak-tightness and pressure integrity.

Applications of impregnation treatment in aluminum casting

For aluminum cast components used in automotive, motorcycle, electronics, hydraulic, and fluid-control industries, requirements for leak-tightness and pressure endurance are extremely stringent. Vacuum impregnation provides an ideal solution to:

• Completely eliminate gas and liquid leakage
• Enhance mechanical integrity and extend service life
• Reduce scrap and rework rates caused by casting defects
• Optimize manufacturing costs and improve overall product reliability

Components suitable for impregnation treatment

• Brake system components, transmission housings, oil pumps, hydraulic valves
• Pressure-bearing parts such as manifolds, covers, housings, and heat sinks
• Aluminum die-cast parts requiring absolute leak-tightness
• Sealed electronic components, sensors, and encapsulated assemblies

Why choose vacuum impregnation at Hardcoat Vietnam??

• Advanced processing technology utilizing Japanese-standard vacuum impregnation systems.
• Highly experienced engineering team with deep expertise in aluminum materials and die-casting processes.
• Strict quality control procedures, ensuring 100% compliance with technical requirements after treatment.
• Fast, flexible, and cost-efficient services tailored to customer production needs.

Contact Us

Are you experiencing leakage issues in aluminum cast components? Let Hardcoat Vietnam support you in enhancing product quality and optimizing manufacturing costs.

📞 Hotline: (+84) 932006371