相对于我国迄今近二十年的挤型业的发展,欧美等国家近百年的制造挤型的历史,对挤压型材的设计与制造的丰富经验,可说相当具有参考价值。模具配套件模具后座套件(die backing)(包括摸具夹持器dieholder、模具支撑块bolster)、副支撑块(sub—bolster)等, Compared with the development of extrusion industry in our country for nearly 20 years so far, the history of manufacturing extrusion in Europe and the United States for nearly a century has rich experience in the design and manufacture of extruded profiles, which can be regarded as quite a reference value. Die backing Die backing (including dieholder, bolster), sub-bolster, etc.,