[Chinalco.com] Key aspects of inspection and preparation for casting include:
(1) Temperature management is critical, covering the holding furnace, online degassing tank, filter box, and the area before the casting chute. This involves monitoring temperature changes during the injection process to ensure accurate control.
(2) All interface seals, accidental flow ports, and locations for accident boxes must be checked. It's important to verify their capacity, placement, and drying status to prevent any leakage or contamination during aluminum transfer.
(3) The heating and drying conditions of transfer tanks, casting channels, hoppers (distribution bags), controlled flow rakes, slag boxes, and tools should be carefully reviewed. Proper preheating ensures smooth material flow and reduces the risk of defects.
(4) The casting transmission control system needs to be inspected, focusing on the operation and display of hydraulic pressure and instrumentation. Ensuring accurate readings and reliable performance is essential for consistent casting results.
(5) The crystallizer’s surface should be smooth, with proper positioning of the starter head and adequate drying conditions, including sufficient lubrication. These factors directly affect the quality of the final product.
(6) Cooling water systems and their temperature conditions must be tested and confirmed. Efficient cooling is vital for maintaining the structural integrity of the castings.
(7) Alloy production and process parameter specifications are crucial elements that should not be overlooked. Each casting requires careful attention to these details to ensure quality and consistency.
Moreover, some preparatory steps must be tailored to specific casting requirements. Based on the type of alloy, dimensions, and previous issues in production and quality, targeted measures should be taken to address potential problems.
When setting main process parameters, it’s important to consider casting time or length to establish a clear relationship between parameters and outcomes. Adjustments should be made based on the actual conditions of each casting, especially when addressing specific quality concerns. A comprehensive and flexible approach helps achieve optimal results in every casting operation.
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