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发电机护环的扩胀,过去曾经采用楔块胀形法,由于工具的构造,难以保证沿圆周方法有均匀的变形分布.日本神户钢铁公司为此开发了能使变形分布均匀的液压胀形法,确立了护环温热液压扩胀技术.
Due to the tool construction, it is difficult to ensure a uniform deformation distribution along the circumference method. Kobe Steel has developed a hydraulic bulging device that can uniformly distribute the deformation Law, established a retaining ring warm hydraulic expansion technology.