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通过大型铸铁泵壳的焊朴实例，较详细地阐述了焊补工艺和经验。并从焊补件长期正常运行情况，说明当时的焊接措施与工艺是正确的。
Through a large cast iron pump casing case of Pu, a more detailed description of welding repair process and experience. And long-term normal operation from the welding parts, indicating that the welding process and technology is correct.