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我厂20吨·米高速锤于一九六九年建成,目的是解决燃气轮机和蒸汽轮机叶片的少无切削问题,要求单面加工余量0.25毫米,只需抛磨即可。但是,以前由于工艺和设备都存在一些问题,例如:毛坯用高温箱室电炉加热,虽然毛坯表面涂上防氧化涂料,但是氧化皮仍然较多,叶片型面光洁度差;模具表面硬度低,挤压几只叶片后,模腔型面上就拉出一条条凹痕。特别在模具的进料口处(即叶型和叶根的连接处),据不完全统计,在挤压60～70只叶片以后,单面磨损量竞达0.6毫米以上,另外,
My factory 20 tons · m high-speed hammer built in 1969, the purpose is to solve the gas turbine and steam turbine blades less no cutting problems, requiring one-sided machining allowance 0.25 mm, just throwing can be. However, in the past, due to the process and equipment, there are some problems, such as: rough with high temperature chamber electric furnace heating, although the blank surface coated with anti-oxidation coating, but the oxide skin is still more poor blade surface finish; mold surface hardness is low, squeeze After pressing a few leaves, the mold cavity surface is pulled out a notch. Especially at the die inlet (ie, the connection of the blade and the root), according to incomplete statistics, after the extrusion of 60 to 70 blades, single-side wear volume of 0.6 mm or more, in addition,