What Factors Are Related to the Operating Efficiency of the Rolling Mill?

With the rapid development of the steel industry, people’s attention has also increased, and the factors affecting the rolling mill business have also increased. The first is the price of coal. Generally, what is needed is coke. After contacting low-cost suppliers and manufacturers, the samples collected need to be tested at the steel factory, and they can be used if they pass the test. The second is the price of steel, and the price of steel rolling equipment has also risen accordingly. The water used for rolling mills is mainly cooling water, and the sewage that cannot be reused is composed of iron oxide. The iron salt obtained from the sewage treatment of rolling mills is sold to chemical companies, and the weak acid solution that reaches purity after filtration is put into the workshop for reuse after adding new acid.

Rolling mill is a kind of rolling and rolling equipment widely used in rolling mills and metal processing industry at present. Its biggest advantages are large rolling force and high efficiency. According to the requirements of users, the rolling mill suitable for their own production requirements can be customized, so it is very popular among users. The roll is the key component of the rolling mill. If the quality of the roll does not meet the requirements, the production efficiency of the rolling mill will naturally not keep up. The use of rolls is not only related to their own quality, but also has a lot to do with the billet of the rolled product. If the user rolls the billet with high hardness for a long time, the service life of the roll will also be reduced accordingly.

Selection of lubrication form for typical parts of the rolling mill: thin oil circulation lubrication is used between the working kun and the cooling system of the rolling mill; the working kun and supporting kun bearings of the rolling mill are generally lubricated with dry oil, and oil film bearings, oil mist, and oil-air lubrication are used at high speeds ; Rolling mill gear bases, motor bearings, and reducers in electrodynamic pressure devices are lubricated by thin oil circulation; rolling mill kun roads, couplings, universal joint shafts and their balance mechanisms, and rolling mill window plane guide friction pairs are dry. Oil lubricated.

The rolls of the rolling mill are mainly driven by the motor drive to drive the reducer and the main shaft of the gearbox for distribution and support during the operation process. The main shaft of the rolling mill also needs to bear the impact force generated during the billet rolling process and the weight of the roll itself, so the quality and material of the roll should also be selected reasonably, generally based on the rolling speed and the specifications of the rolled product . When the reducer or gearbox rubs against the bearing during high-speed operation, oil leakage is likely to occur. Therefore, an oil seal is used where it contacts with the shaft. The design of rolling mill guides is mainly for the rolling stock to enter the rolling mill quickly and smoothly.

Due to the high line speed, continuous production, and numerous product varieties and specifications, the high-speed line rolling mill has high requirements on the dimensional accuracy of the finished product, and the requirements on the performance and processing accuracy of the rolling mill are also very strict, especially for the selection of parts materials, dimensional processing accuracy, geometric The shape, heat treatment state, and assembly precision all have very high requirements. Most of the key components are not marked on the drawings imported from abroad. my country’s steel rolling enterprises have successfully manufactured key equipment through tackling key problems. The high-speed rolling mill has similarities with conventional rolling mills, and the ultimate goal is to obtain the required specifications and sizes of rolled pieces through rolling mill rolling. In industrial operation, in order to improve the operating efficiency of the rolling mill, it is necessary to carry out corresponding improvement measures. The operating efficiency of high-speed rolling mills is mostly affected by unplanned shutdown, other equipment delays, roll and bearing replacement, and other process maintenance. Therefore, it is necessary to plan to improve the operating rate of high-speed rolling mills. The specific operations are as follows:

1. The material of the rolling mill should be screened according to the requirements of the rolled piece to improve the fatigue resistance and service life of the roll. Check the wear and tear of the rolls and guides from time to time.
2. Reverse the injection process of bearing lubricating oil — from the original internal — external to external — internal, so as to reduce the pollution of dust to the bearing.
3. The rolling mill uses ultrasonic technology to inspect and analyze the rolls.