我们中华民族在历史上有过许许多多的创造发明,中世纪以前的科学技术曾经居世界前列,失蜡铸造法就是其中之一。不仅我国工艺美术界用它来制造艺术铸件,而且早在公元四世纪传入日本后,就发展成了具有日本特色的“真土式失蜡法”;五十年代以前,美国又成功地用来铸造外形复杂的喷气飞机引擎的喷嘴(重30公斤,高40厘米含镍8％,铬18％的高合金钢铸 We, the Chinese nation, have had many inventions and inventions in history. Before the Middle Ages, science and technology were among the best in the world. Lost wax casting was one of them. Not only did China’s arts and crafts use it to make art castings, but it also developed into a “real earth lost wax law” with Japanese characteristics as early as the 4th century AD. By the 1950s, the United States successfully used To cast a complex jet engine jet nozzle (weighing 30 kg, 40 cm high 8% nickel, 18% of chromium high alloy steel castings