大型铸锻件
大型鑄鍛件
대형주단건
HEAVY CASTING AND FORGING
2013年
5期
15-23
,共9页
600吨级特大钢锭%冶炼%纯净钢%核电半速转子
600噸級特大鋼錠%冶煉%純淨鋼%覈電半速轉子
600둔급특대강정%야련%순정강%핵전반속전자
600 tonner heavy ingot%smelting%clean steel%nuclear half-speed rotor
为解决600吨级低偏析高纯净特大合金钢锭极限制造技术难题，研究开发出了超低磷粗炼钢水及钢包炉高纯钢水冶炼、钢包炉衬寿命提高与优化、四炉合浇高寿命水口、大钢锭成分偏析控制、浇注温度梯度化精确控制、特大型钢锭凝固数值模拟及锭型设计、防粘模脱模等多项关键技术，在国内率先制造成功了600吨级低偏析高纯净特大合金钢锭，并形成批量生产。现已用特大钢锭成功锻制出了6件1100 MW核电半速转子交用户使用。
為解決600噸級低偏析高純淨特大閤金鋼錠極限製造技術難題，研究開髮齣瞭超低燐粗煉鋼水及鋼包爐高純鋼水冶煉、鋼包爐襯壽命提高與優化、四爐閤澆高壽命水口、大鋼錠成分偏析控製、澆註溫度梯度化精確控製、特大型鋼錠凝固數值模擬及錠型設計、防粘模脫模等多項關鍵技術，在國內率先製造成功瞭600噸級低偏析高純淨特大閤金鋼錠，併形成批量生產。現已用特大鋼錠成功鍛製齣瞭6件1100 MW覈電半速轉子交用戶使用。
위해결600둔급저편석고순정특대합금강정겁한제조기술난제，연구개발출료초저린조련강수급강포로고순강수야련、강포로츤수명제고여우화、사로합요고수명수구、대강정성분편석공제、요주온도제도화정학공제、특대형강정응고수치모의급정형설계、방점모탈모등다항관건기술，재국내솔선제조성공료600둔급저편석고순정특대합금강정，병형성비량생산。현이용특대강정성공단제출료6건1100 MW핵전반속전자교용호사용。
In order to solve the extreme manufacturing technology problems of 600 tonner low segregation and high purity heavy alloy ingot , several key technologies have been researched and developed , for example, smelting with rough smelted ultra low phosphorus molten steel and ladle refined high purity molten steel , improving and optimizing the service life of ladle furnace lining , pouring the long life gate with four ladles molten steel , controlling the composi-tion segregation of heavy ingot , accurately controlling the pouring temperature with gradient , solidification numerical simulation and pattern design of heavy ingot , demoulding from anti-sticking pattern etc .We have taken lead in manu-facturing 600 tonner low segregation and high purity heavy alloy ingot successfully in domestic and have taken into mass production.At present 6 pieces of 1100MW nuclear half-speed rotor have been forged by this kind of heavy ingot and already been brought into service by customers .
