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近几年来,由于内燃机车的发展与应用,木质模型已适应不了突飞猛进的社会主义革命和社会主义建设的需要。我厂生产内燃机车铸件所用的各种模型,大小不一,形状复杂,要求周期短,质量高,坚固耐用。虽然可用塑料模或金属模代替木模,但塑料模在坚固耐用方面,仍不理想;金属模要耗费多量的金属,加工较困难,仍难满足铸造生产的要求。
In recent years, due to the development and application of diesel locomotives, wooden models have not been able to meet the needs of the rapid socialist revolution and socialist construction. I plant a variety of models used in the production of diesel locomotives, different sizes, complex shapes, requiring a short cycle, high quality, durable. Although plastic molds or metal molds can be used instead of wood molds, the plastic molds are still not ideal in terms of durability. The metal molds consume a large amount of metal and are difficult to process and are still difficult to meet the requirements of foundry production.