Xiamen Topcasting Industrial Technology Co., Ltd.

 Appreciation of Casting Two

Casting Name: 4-in-1 Inverter Housing (Top Cover, Housing, and Mid Cover)    

This product is an automotive inverter housing designed for superb heat dissipation and stringent airtightness to safeguard the vital electronic components within:

1. Casting Usage: Automotive Inverter;

2. Distinctive Features of the Cast Product: Thin walls, deep cavities, intricate structures, with an emphasis on safety and seal integrity;

   (i) Select product areas are shaped with inclined mold sliders;

   (ii) Portions of the raw blank have strict surface appearance standards, demanding a roughness of less than Ra6.3, with no casting marks or burn-in allowed;

   (iii) Components are die-casted directly with a UBE 2200/1650-ton press, followed by assembly prior to dispatch;

   (iv) Cleanliness Standards: Impurity weight ≤1.5mg, size of foreign particles <1000um;

3. Critical Product Specifications:

   (i) An unyielding 100% chromate conversion coating (passivation) is applied, meeting or surpassing Grade 8 of the GBT 6461-2002 after a 96-hour salt spray test;

   (ii) Leak Test Pressures: For waterways: 35PSI; for large cavities: 6PSI;

        Leak Rates: For waterways: 1cc/min; for large cavities: 2cc/min;

        Each part undergoes a 100% helium leak test, with the cooling waterway pressurized to 2.5bar, assuring a helium concentration of at least 85% and a detection limit not exceeding 1*10^-7 mbar*L/s;

   (iii) The product's machining line employs heat-shrink tool holders to process materials with up to a 280mm maximum machining reach. This tool holder is noted for its remarkable stability and coaxiality, ensuring consistent product accuracy and dimensions.