制造：钢管轧制，五金冲件；压铸件加工。
Manufacturing: Steel Pipe rolling, jumping pieces of hardware; Die-casting pieces for processing.
因此，建立精确实用的轧制力计算模型，就成为连轧无缝钢管轧制领域内的一个具有重大应用价值的研究课题。
Therefore, establishing the precise and practical rolling-force calculation model has become a research project with important applied worth in the continuous rolling-seamless steel pipe field.
一个钢管的生产流程如下：圆管坯放在要被切割的高温轧制线上，继续升温，穿孔，轧制直到管坯大小基本成型。
The process of a pipe production is the following: a round cast workpiece is put onto a hot rolling line where it is cut, heated, stitched and rolled till a pipe of necessary size is ready.
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