Precautions during Rolling Mill Installation

For the installation of rolling mill equipment, there are some small mistakes in the methods mastered by many people. These small mistakes may affect the use of rolling mill equipment. Before installation, we should check whether each part is firm, remove all defects in transportation and storage, clean the parts, decontaminate the rotating parts and fill with grease.

The surface of the foundation must be cleaned before the equipment is installed, and the level can be corrected during installation. The reducer is directly installed on the foundation. The secondary grouting layer is constructed by the user according to the actual conditions of the site. The foundation bolts can be watered again only after the connection is correct.

When installing the rolling mill, adjust it according to the equipment centerline and level it in sections. The height of the centerline of the reducer and the center height of the mill housing should be no more than 0.3 mm/m. The flywheel is directly mounted on the high-speed shaft of the reducer. After starting the motor normally, the rolling mill machine should run for no more than two hours. Check the heating conditions of the roller bearings and reducer and ensure that the temperature must not be higher than 60℃. The reducer of the rolling mill machine should rotate smoothly and no larger noise and impact sound. Only the no-load test run is normal, can load test be carried out according to the rolling process regulations.

After adjustment and trial operation, we should check whether the bolts in all parts are firm and turn manually. Check whether the transmission system is flexible. If there is a jam, you must check the cause and remove it in time to check whether the electrical circuit is normal.

The casting process plan of the rolling mill housing must determine the pouring position and the parting surface first. According to the structural characteristics of the casting, two boxes are adopted, the parting surface is the upper surface of the casting, the part above the parting surface is a riser, and the casting is all below the parting surface. A single-layer side-entry pouring system, molding method and the type of the sand mold are adopted; the wooden mold is used to make the sand mold below the parting surface, and the sand box is used for the part above the parting surface. Sand surface sand is chromite sand, and back sand is silicon sand. The resin sand machine automatically mixes the sand and sculpts by hand.