開口式機架由機架底座和上橫梁組成。

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

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.

短應力線軋機有什么特點？

短應力線軋機具有體積小、重量輕、軋機剛度大、軸承使用壽命長等優(yōu)點。近年來該軋機在小型軋機上使用越來越廣泛。隨著短應力線軋機在線快速換輥裝置的出現，使軋機投資減少，導致其應用將會更普遍。

What are the characteristics of a short stress line mill?  

Short stress line mill has the advantages of small volume, light weight, large rigidity of rolling mill and long service life of bearing. In recent years, the rolling mill has been used more and more widely in small rolling mill. With the emergence of on-line fast roll change device for short stress line rolling mill, the investment of rolling mill is reduced, and its application will be more common.

楔橫軋工藝的基本原理是，將加熱后的棒材送入兩個同向旋轉的帶有楔性凸起的模具中間，棒材在模具的帶動下，作與模具反向的回轉運動，同時材料發(fā)生徑向壓縮變形和軸向延伸變形，從而成形階梯軸類零件。

The basic principle of the cross wedge rolling process is to send the heated bar into the middle of two same revolving moulds with wedge-shaped protrusi. The rod is driven by the mold to make the reverse rotation movement with the mold. At the same time, the material has radial compression deformation and axial extension deformation, thus forming a staircase type part.

輥式軋機生產率可以很高，有的可達到2000-4000 件/小時甚至更高，易于實現自動化生產?？傊伿杰垯C適用于對產品精度要求不高，且同時軋制一個或幾個零件的情況。輥式軋機是三種類型中運用多的一種。圓弧式軋機適用于大批量的為以后鍛造供坯的生產情況。Whatarethecharacteristicsofashortstresslinemill。

The productivity of the roller mill can be very high, some can reach 2000-4000 pieces / hour or even higher, and it is easy to realize automatic production. In conclusion, the roll mill is suitable for the low accuracy of products and rolling one or several parts at the same time. Roll mill is the most widely used in three types. The circular arc mill is suitable for large quantities of production for forging later.