低压、差压和调压铸造工艺原理及其优势

Process Principle and Superiority of Low Pressure Casting, Counter-Pressure Casting and Adjustable Pressure Casting

低压、差压和调压铸造是保证铸件成形性和优良内在品质的重要工艺方法。分析了三种反重力铸造工艺的原理，对低压、差压和调压铸造方法的优势及适用范围进行了对比。指出在生产中可根据产品具体要求选择相应的铸造方法。

Low pressure casting, counter-pressure casting and adjustable pressure casting are the important techniques to ensure the casting formability and good internal quality. The principles of three kinds of counter-gravity casting process are analyzed. The superiority and applicability of low pressure casting, counter-pressure casting and adjustable pressure casting are compared. The matching casting process is selected on the basis of product specification in production.