Introduce the Rolling Mill for Two high openable housing mill with top screw down in China

  The Rolling Mill for Two high openable housing mill with top screw down is a   mechanical equipment that realizes the metal rolling process. Refers to equipment that completes the entire process of rolling stock production, including main equipment, auxiliary equipment, lifting and transportation equipment, and auxiliary equipment. But generally   speaking, Rolling Mill for Two high openable housing mill with top screw downs often only refer to main equipment.  

It is said that there   were Rolling Mill for Two high openable housing mill with top screw downs in Euro  pe in the 14th century, but it is recorded that the Italian Da' Finn in 1480.

Qi (Leonardo da Vinci) designed a sketch o  f the Rolling Mill for Two high openable housing mill with top screw down. In 155  3, Frenchman Brulier (Brulier) rolled out gold and silver plates to make coins. Since then, rolling mills have appeared in Spain, Belgium and the United Kingdom. Figure 1 The rolling mill designed in 1728 for the production of round bars is the rolling mill designed in 1728 for the production of round bars in Britain. In 1766, Britain had a serial mini-rolling mill. In the middle of the 19th century, the first reversible plate rolling mill was put into operation in Britain and rolled out marine iron plates. In 1848, Germany invented the universal rolling mill. In 1853, the United States began to use a three-high profile rolling mill (Figure 2 the original three-high rolling mill side view), and used a steam engine-driven lifting table to achieve mechanization. Then came the Lauter mill in the United States. The first continuous rolling mill was built in 1859. The universal profile rolling mill appeared in 1872; a semi-continuous strip rolling mill was made in the early 20th century, consisting of two three-high roughing mills and five four-high finishing mills.

Working machine base:

It consists of rolls, roll bearings, racks, rail seats, roll adjustment devices, upper roll balance devices and roll change devices.

Roll bearing:

Support the roll and maintain the fixed position of the roll in the stand. The work load of the roll bearing is heavy and the change is large. Therefore, it is required that the bearing has a low friction coefficient, sufficient strength and rigidity, and easy to replace the roll. Different Rolling Mill for Two high openable housing mill with top screw downs choose different types of roll bearings. Rolling bearings have high rigidity, low friction coefficient, but small pressure-bearing capacity and large external dimensions. They are mostly used for work rolls in strip mills. There are two types of sliding bearings: semi-dry friction and liquid friction.

Semi-dry friction roller bearings are mainly bakelite, copper tile and nylon tile bearings, which are relatively cheap and are mostly used in profile Rolling Mill for Two high openable housing mill with top screw downs and billeting machines. Liquid friction bearings have three types: dynamic pressure, static pressure and static-dynamic pressure. The advantage is that the friction coefficient is relatively small, the pressure bearing capacity is relatively large, the working speed is high, and the rigidity is good. The disadvantage is that the thickness of the oil film changes with the speed. Liquid friction bearings are mostly used in the back-up rolls o  f strip Rolling Mill for Two high openable housing mill with top screw down and other high-speed rolling mills.