For the installation of rolling mill equipment, many people have some small mistakes in the methods they master, which may affect the use of rolling mill equipment. Before installation, carefully check whether all parts are firm, remove all defects in the process of transportation and storage, clean all parts, decontaminate the rotating parts and add grease.
Before equipment installation, the foundation surface shall be cleaned. In the process of installation, the sizing block can be used to correct the horizontal reducer, which is directly installed on the foundation. The secondary grouting layer is constructed by the user in combination with the actual situation on site. During the construction process, the equipment and reserved holes can be correctly adjusted and connected before the secondary grouting of foundation bolts.
During the installation of the rolling mill, it shall be adjusted according to the center line of the equipment. The height of the center line of the reducer shall be leveled in sections, and the vertical deviation between the center line height of the arch and the center height shall not be greater than 0.3m M / m. The machine flywheel shall be directly installed on the high-speed shaft of the reducer for no-load test run: after the motor is started normally, the no-load test run of the rolling mill shall be carried out for more than 2 hours to check the heating condition of the roller bearing and reducer. The temperature shall not be higher than 60 ℃, and, After no-load test run without noise and impact is normal, the load test run can be carried out according to the rolling process specification. During the adjustment and test run, carefully check whether the bolts at each part are firm, and rotate by hand to check whether the transmission system moves flexibly. If there is jamming, find out the cause, eliminate it in time, and check whether the circuit is normal.
According to the structural characteristics of the casting, the casting process scheme of the rolling mill frame should first determine the pouring position and parting surface. According to the structural characteristics of the casting, two boxes are used for molding. The parting surface is the upper surface of the casting, the riser is above the parting surface, and the castings are under the parting surface. The single-layer side entry gating system, molding method and sand mold are used. The sand mold is made by wood mold below the parting surface, and the sand mold is made by sand box above the parting surface. The surface sand is chrome ore sand, The back sand is silica sand, and the resin sand machine can mix sand automatically and discharge sand manually.
