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Appreciation of Fine Castings(two)
2024-03-14 08:00
Casting Name: 4-in-1 Inverter Housing (Top Cover, Housing, and Mid Cover)
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.
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