Heating furnace

　　The heating furnace brand is Shanghai Guardian, which adopts energy-saving regenerative walking beam heating furnace with high yield, low consumption and high degree of automation, which can effectively eliminate the "black mark" defects on the billet caused by the water-cooled beam during heating, and improve the uniformity of heating temperature. The width of the furnace is 10 meters, the length is 46 meters, and the maximum length of the blank into the furnace is 9.6 meters. The fuel is the gas generated by the ironmaking blast furnace (2 times after recovery) The billet is 1100-1200 degrees (according to the different products, the temperature is different), and the billet is first dephosphorized by high-pressure (20 megapascal) water after the billet is discharged, and the iron oxide scale on the surface of the billet is removed (the function is to improve the surface quality and finish of the billet when rolling) and then enters the rolling mill for rolling

　　Universal rolling mill

　　1. After the billet is removed from the furnace after phosphorus removal, the double-stand reversible billet rolling mill adopts advanced technologies such as hydraulic anti-jam steel, overload protection, hydraulic balance, and load pressure to effectively ensure the rolling quality.

　　2. The billet opener BD1 rolls 5-7 times (the number of rolling times is adjusted according to different billet types of products) BD1 is an archway type two-stick reversible rolling mill.

　　3. After passing through the billet opener BD1, enter the BD2 rolling mill for 3 times, BD2 is also an archway type two-stick reversible rolling mill, which is different from BD1 in that after the improvement, each of the 3 passes is added with high-pressure (20 megapascal) water descaling.

　　4. After BD2, it enters the universal rolling mill UR+E+UF triple continuous rolling mill with three stands universal reciprocating continuous rolling mill, three-stand universal reciprocating continuous rolling mill, and fully hydraulic pressing TCS control system and roll gap automatic adaptation device to ensure the high dimensional accuracy of the product. And in the last pass embossed with the company's words and materials, etc

　　5. Finally, there is product information such as the batch number of the online thermal printing furnace (currently not started)

　　Fine

　　1. After the product is cut through the head, it enters the international advanced finishing technology of the long-length intelligent pre-bending cooling bed, cooling bed pre-bending + long-length cooling + horizontal composite long-length straightening + combined sawing drill. Reduce residual stress, improve straightness, dimensional accuracy, section quality, and yield.

　　2. When entering the Pingli composite straightener (universal correction) to produce heavy rails, the whole infrared flaw detection is carried out online (online automatic flaw detection to ensure the internal quality of the rail. At present, only for more than 50kg of products for flaw detection, straightening after marshalling traverse, the production of steel into the cold sawing ratio, the production of rail into the split saw 1 cut for 2, and then into the automatic drilling and milling line (Austrian Linsinge company production, is currently the most advanced international combined sawing equipment, Baotou Steel, Handan Iron and Steel are in use) there are 3 lines, each 2 sets of equipment, heavy rail 6.25 meters can be achieved online processing using automatic palletizing machine, section steel to achieve palletizing and packaging automation rail after automatic palletizing manual packaging and final warehousing sales

　　Infrared flaw detection

　　First, the detection principle: the heating source heats the workpiece, and the surface temperature field distribution of the workpiece is received by the infrared thermal imaging camera, and the output video is collected by the video capture card and sent to the microcomputer for image processing, and the processing result is sent to the video recorder for saving and display display.

　　2. The workpiece can be divided into two methods: penetration method and reflection method.

　　1. The principle of the penetration method is: the heating source heats one side of the workpiece, and at the same time receives the temperature field distribution of the surface of the workpiece by the infrared camera on the other side. If there is a defect in the workpiece, it will hinder the propagation of the heat flow, creating a "low temperature zone" on the surface of the workpiece to be tested, and the thermal image received on the infrared camera will be a "dark zone".

　　2. The principle of the reflection method is; The heating source heats one side of the workpiece, and the infrared camera is used on the same side to receive the red external heat image. If there is a defect in the workpiece, it will hinder the propagation of heat energy, causing energy accumulation (reflection), so that the surface of the workpiece corresponding to the defect will form a "high temperature zone", which will be a "bright zone" in the thermal image. While detecting workpiece defects, it is very easy to calculate the position, shape, size, etc. of defects, so as to fully detect the parameters of the workpiece.