Luoyang HongtengIntermediate frequency induction furnace
In order to ensure the smooth production of the daily work of the rebar production line, daily maintenance is particularly important. It should be noted that the service life of the rolling mill will be greatly reduced if the daily maintenance of the rolling mill is not in place. Check the rolling mill every day for oil, water, gas leakage, and overheating; To reduce the loss caused by illegal operation of equipment or maintenance is not timely, the rubber roller should be lifted in the chain, rope, and roll surface end, etc. These are necessary maintenance measures. The automatic thickness control system on the rolling mill in the industrial production line is operated in strict accordance with the rolling mill operation process procedure and operation method. The gearbox maintenance should be cleaned at least once every quarter. When the roller-feeding steel reaches the limit position, special attention should be paid to the safe operation of the rolling equipment. When operating the rolling mill, attention should be paid to the hand being pressed by the steel plate and rolled into the feeding steel. When using the crane to lift the rolling mill for inspection, be careful not to collide with the...
In inquiries, customers often mention I want a 1-2T/H rebar production line to make 8-32mm steel bars. In fact, this is an unreasonable solution requirement. In reality, we would not design solutions for customers in this way. Because the steel bar production line below 5T /H usually using 40*40-60*60mm steel billets. Let’s take an example for the 60*60*1500mm steel billet, the weight of this steel billet is 42KG, and the weight of a steel bar with a diameter of 32mm and a length of 12M is 75.76KG. So this is the question: how do we use raw materials with a weight of 42Kg to make a finished product with a weight of 75KG? Obviously, it is impossible. Therefore, for production lines below 5T/H, the most recommended range for the production of steel bars is 12-22mm diameter steel bars. In addition, the size of the billet also affects the model of the rolling mill. The larger the billet, the larger the model and the more expensive the rolling mill is required. The steel bar production line is a very flexible production line. We can customize the plan according to customer requirements.
The causes of roller breakage are as follows： 1) Improper cooling of rolls. For example, cooling water is supplied too early and too quickly after closed water rolling is completed. 2) The roller is not installed correctly, resulting in uneven stress during operation. 3) Due to roll winding and wrong hole feeding, the rolling deformation of a plurality of strips is too large; Or the rolling temperature is too low, which increases the deformation resistance and the rolling force exceeds the strength pole of the roller. 4) The internal quality of the roll is not good, the original stress is not eliminated or there is a casting shrinkage cavity; The strength of the rolls is low in some places, resulting in stress concentration. 5) That groove of the roll is deep, the working diameter of the roll is too small, and the strength of the roll is insufficient
1，Classification of rolling steel Steel rolling is the production process of rolling steel ingots or continuous casting billets produced by steel mills into steel. According to its cross-section shape, the steel produced by the rolling method can be roughly divided into profiles, wires, plates and strips, steel pipes, and special steel products. Steel rolling methods can be divided into hot rolling and cold rolling according to different rolling temperatures; According to the relative motion relationship between rolled piece and roll during rolling, it can be divided into longitudinal rolling and cross rolling; According to the forming characteristics of rolled products, it can be divided into general rolling and special rolling. Spinning rolling and bending forming belong to special rolling. Rolling, like other processes, is to make metal plastic deformation and make it into a product. The difference is that steel rolling is carried out between rotating rolls. There are two categories of rolling mills, the main equipment of rolling mills or the main train of rolling mills, auxiliary machines, and auxiliary equipment. Equipment used to deform metal in rotating rolls is usually called main equipment. The operation line formed by the arrangement of main equipment is called the main train...
(1) Classification of crucibles: There are three kinds of induction furnace crucibles according to materials, alkaline crucible, acidic crucible and neutral crucible. The most widely used binder is boric acid. The functions of boric acid in the manufacture of acidic (quartz sand) or alkaline (magnesia) crucibles are as follows: A, Reduce the sintering temperature. B, Promote the formation of spinel. C, Reduces the volume change rate of the crucible. According to the manufacturing methods, there are three manufacturing methods for crucibles: prefabricated shaped crucibles outside the furnace, shaped crucibles inside the furnace and masonry crucibles. (2) Quality requirements of crucible The main requirements for crucible refractories are: 1) High refractory and high temperature structural strength. 2) Good resistance to quench and heat. 3) Good slag resistance. 4) That thermal conductivity is as low as possible. 5) Insulation performance. 6) No pollution, no harm, low volatility, strong hydration resistance and low cost.
There are strict requirements for the installation of small rolling mills, as well as rolling equipment, but there are still many differences between small rolling mills and other equipment, so special attention should be paid to the installation. Because of the complexity of the electrical control section of a small rolling mill, including one or more working stands and their transmission devices, the rolling line usually has a long process layout and a strict height difference between the equipment and the centerline. When installing the equipment on the rolling line on a soft soil foundation, the uneven settlement and displacement of the equipment should be considered. This is also the reason why the settlement observation point should be set up according to the center marking plate, reference point, rolling mill, and other equipment and regular measurement should be carried out before the installation of the rolling mill. Only when settlement and displacement become stable can the equipment be adjusted accurately. Because the working load of roller bearings is very heavy, the friction coefficient of bearings is required to be very small, and the bearings should have enough strength and stiffness to be easy to replace. Generally speaking, the mechanical properties...
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