闭口式机架为一整体铸件制成。这种机架形式在型钢车间中小型轧机上应用较多。六辊轧机，轧机***厂家介绍，这种轧机的辊系相对来说比较稳定，而且其主要是由一对工作辊和两对支承辊组成。其优点是强度和刚度较高，辊跳值较小，产品精度较高。其主要缺点是制造比较困难，装卸、换辊不方便。轧制压力较大、对轧件尺寸要求比较严格时常采用闭口式机架。如初轧机、型钢连轧机和型钢成品轧机等。

The closed frame is made of a whole castings. This type of frame is used more in the ***all and medium mill in the steel workshop. Its advantages are that the strength and stiffness are high, the roll jump value is ***all and the precision of the product is high. Its main disadvantage is that it is difficult to manufacture, and it is inconvenient to load and load and change the roll. When the rolling pressure is larger and the requirements for the size of the rolled piece are strict, the closed frame is often used. Such as the early rolling mill, the type steel continuous rolling mill and the steel finished rolling mill, etc.

据说在14世纪欧洲就有轧机，但有记载的是1480年意大利人达·芬奇（Leonardo da Vinci）设计出轧机的草图。1553年法国人布律列尔(Brulier)轧制出金和银板材,用以制造钱币。此后在西班牙、比利时和英国相继出现轧机。

It is said that there are rolling mills in Europe in the fourteenth Century, but it is recorded that in 1480, Leonardo Da Vinci (Italian Italian designer Da Finch) designed the draft for rolling mills. In 1553 the French law Adler cloth (Brulier) rolled gold and silver plate, used in the manufacture of coins. Since then, rolling mills h***e been rolled out in Spain, Belgium and Britain.

楔横轧技术是一种低耗的***生产工艺在连杆生产线上采用楔横轧制坯热模锻压力机成形工艺生产连杆锻件具有其它锻造工艺无法相比的独特优势与辊锻工艺相比材料利用率提高10%以上劳动生产率提高30 50%

Cross wedge rolling technology is an advanced production process with high precision, high efficiency, high efficiency and low cumption. On the connecting rod production line, the forming process of the die forging press of the wedge rolling blank is adopted to produce the connecting rod forgings with the unique advantages of other forging processes. Compared with the roll forging process, the utilization ratio of materials is raised by more than 10% of the labor productivity by 3050%.

轧机***厂家说，热轧机的优点主要可以归纳为三个方面。一点，采用热轧可以明显的减少能耗，降低成本。此外，热轧时可以发挥出较高的金属塑性，而且所产生的变形抗力较小，能够有效的防止金属出现严重的变形问题。

The mill manufacturer explains that the advantages of the hot rolling mill can be summed up in three aspects. First, the use of hot rolling can significantly reduce energy cumption and reduce costs. In addition, hot rolling can give full play to the high metal plasticity, and the deformation resistance is ***all, which can effectively prevent the serious deformation of the metal.