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我厂自引进西德的汽轮机制造技术以后,大断面球铁的铸造,成为关键课题。特别是我国宝钢的配套机组,它的零件结构复杂、技术要求高、壁厚相差悬殊,集这些难题于一炉的零件,实为少见。 从83年8月起,做了三次不同工艺的模拟试块,均获得了满意的结果。从84年4月起,已用无冒口生产所有的汽轮机大断面球铁件和大断面灰铸铁件。其中宝钢配套机组,共有大断面球铁件三种六件(共重11000公斤),经加工、检查,取得了令人满意的结果,该机组已在宝钢正常运转。
Since the introduction of steam turbine manufacturing technology in West Germany, the casting of large section ductile iron has become a key issue. Especially our country Baosteel supporting unit, its parts structure is complex, high technical requirements, wall thickness difference between the set of these problems in a furnace parts, it is rare. From August 83 onwards, made three different simulation test blocks, have obtained satisfactory results. Since April 84, all steam turbines with large cross-section ductile iron parts and large cross-section gray cast iron parts have been produced without risers. Among them Baosteel supporting units, a total of three large pieces of nodular iron pieces (total weight 11000 kg), the processing, inspection, and achieved satisfactory results, the unit has Baosteel normal operation.