1.引言世界上许多无缝钢管生产厂家仍在采用轧制的和剥皮的钢坯作为钢管机组的原料。这种原料质量优良,但非常昂贵,因为通常的铸锭生产方法的缺点是能量消耗大,收得率低。此外,铸锭方法由于生产工序多,因此所需要的生产周期时间长。这意味着处于加工过程中的量很大,因而需要对钢管生产提出预先订货。他们必须拥有一个费用昂贵 1. INTRODUCTION Many seamless steel pipe producers in the world are still using rolled and peeled billet as raw material for steel pipe units. This raw material is of good quality, but very expensive, because the drawbacks of conventional ingot production methods are energy consumption and low yield. In addition, the ingot method due to the production process and more, so the required long production cycle time. This means that the amount of processing in the process is large, so the need for pre-order steel pipe production. They have to be costly