保持工作輥的上輥和下輥相對于軋機中心線對稱且在軸線方向上移動。這種的工作輥移動的設(shè)計，是用來改變工作輥和支撐輥的偏移需要大的移動量。這種大移動量的采用需要大量的改裝費用，并且需要解決很多問題.

The upper and lower rolls of the work roll are symmetrical and move in the direction of the axis of the rolling mill. The movement of this work roll is designed to change the shift of work rolls and support rolls to require large amounts of movement. The use of this large shift of momentum requires a lot of modification costs, and many problems need to be solved.

開坯機為兩輥水平軋機，坯料送至軋機前后，根據(jù)軋制程序表進入相應(yīng)的軋槽可逆軋制，并通過翻鋼裝置將軋件夾緊進行翻轉(zhuǎn)。一般軋制5-7道次(多9道次)。

The blooming machine is a two roll horizontal mill, and the billet is sent to the front and rear mills. According to the rolling schedule, the roll is rolled into the corresponding rolling groove, and the workpiece is clamped and turned through the turning device. The general rolling is 5-7 times (up to 9 times).

軋機在軋制過程中由軋制力所引起的內(nèi)力沿機座各承載零件分布的應(yīng)力曲線，稱作應(yīng)力線。為了提高軋機剛度，減少機架及各承載零件的變形，采取各種技術(shù)措施后，將這種應(yīng)力線縮短了的軋機，稱為短應(yīng)力線軋機。它是高剛度軋機中的一種。

The stress curve of the rolling force, which is caused by the internal force of the rolling force, along the bearing parts of the frame, is called the stress line. In order to improve the rigidity of rolling mill and reduce the deformation of rack and bearing parts, after taking various technical measures, the mill which shortens the stress line is called short stress line mill. It is one of the high rigidity rolling mills.