開口式機(jī)架由機(jī)架底座和上橫梁組成。

開口式機(jī)架是型鋼車間常見的一種機(jī)架形式。這種機(jī)架的優(yōu)點(diǎn)是制造簡單，裝卸、換輥方便。其缺點(diǎn)是強(qiáng)度和剛度較低，軋輥輥跳值較大，影響產(chǎn)品精度，故只適用于大型軋機(jī)。

The open frame is of the frame base and the upper cross beam.  

The open frame is one of the most common forms in the steel workshop. The advantages of this frame are simple manufacturing, loading and unloading, and convenient for roll change. Its disadvantage is that its strength and stiffness are low, the roll roll value is larger and the precision of the product is affected, so it is only suitable for large rolling mill.

按軋制品種、軋機(jī)型式和公稱尺寸來命名。“公稱尺寸”的原則對(duì)型材軋機(jī)而言，是以齒輪座人字齒輪節(jié)圓直徑命名。

It is named according to the varieties of rolling, the type of rolling mill and the nominal size. The principle of "nominal size"

For rolling mills, they are named after the gear ring and the pitch diameter of the herringbone gear.

四棍軋機(jī)的工作輥直徑較小，傳遞軋制力矩，軋延壓力由直徑較大的支承輥承受。這類設(shè)備的主要優(yōu)點(diǎn)是相對(duì)剛度較大，壓下量大、軋延力小，可軋制較薄的板材，也包括有可逆和連軋兩種。

The working roll diameter of the four bar mill is small, and the rolling torque is transferred. The rolling pressure is borne by the backup roller with larger diameter. The main advantages of this type of equipment are relatively large stiffness, large reduction, low rolling force, thin rolled sheets, and reversible and continuous rolling two.

軋機(jī)專業(yè)廠家說，熱軋機(jī)的優(yōu)點(diǎn)主要可以歸納為三個(gè)方面。一點(diǎn)，采用熱軋可以明顯的減少能耗，降低成本。此外，熱軋時(shí)可以發(fā)揮出較高的金屬塑性，而且所產(chǎn)生的變形抗力較小，能夠有效的防止金屬出現(xiàn)嚴(yán)重的變形問題。

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 small, which can effectively prevent the serious deformation of the metal.