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Galvanized Line Development Trend
Aug 09, 2017

Cold rolled steel strip surface will be sticky with oil and iron powder containing dross, Galvanized line into the galvanized line and continuous annealing line before the annealing furnace before the first need to wash the surface of the steel tank and the dross, and then through the brush tank scrub. When the steel strip is scrubbed, the iron powder and the alkali wash solution attached to the surface of the strip are brushed off the strip and into the scrubbing tank. The steel strip needs to cool the roll surface during cold rolling, Galvanized line and the large amount of iron powder produced during the rolling process flows back to the circulating tank with the coolant. Cleaning fluid and coolant to be recycled to remove the iron powder. At present, China has not been able to use a long time and the use of good professional iron removal equipment, mainly by imports of German or Japanese magnetic separator. While the high price of imported equipment, maintenance costs are high, and spare parts of the preparation cycle is long. Galvanized line I developed a high-performance low-cost counter-current iron powder magnetic separator, Galvanized line the actual use of the magnetic separator iron removal rate of up to 98.7%, more than the German magnetic rod iron powder magnetic separator 94% of the iron removal effect. In addition, according to the need to use, by individually improving the permanent magnet magnetic induction strength to further improve the iron removal rate, this method meets the magnetic separator to the direction of the development trend of high gradient.

The surface of the roller is made of stainless steel, Galvanized line the surface of the roller is a smooth round surface, the end faces of both ends of the roller are rounded with the surface of the roller (which is cylindrical), which is conducive to scrapping the iron powder adsorbed on the roller, The diameter of the roll is 1 100 mm, considering the permeability of the roller and its own strength, the roll thickness is 8 mm. In the inner cavity of the drum, a permanent magnet 6 which does not rotate with the drum is provided. The magnetic force angle of the permanent magnet is designed to be 230 °, Galvanized line which can maximize the adsorption of iron powder in the fluid while allowing the adsorbed iron powder To scraper 4. The magnetic force of the permanent magnet is close to the outlet as a starting point and is clockwise in the inner cylindrical surface of the roller. The increase in magnetic induction does not affect the rest of the magnetic separator, so the magnetic induction can increase according to the increase of the iron removal rate. The stronger the magnetic induction of the permanent magnet, the better the iron removal effect. Galvanized line The position of the permanent magnet (the starting point of the magnetic force angle) is determined by adjusting the shaft of the roller shaft 11 so that the water of the water withdrawal valve of the water intake valve is at least, and then the positioning shaft is fastened.

The roller is driven by the gear motor through the reducer, the drive is driven by the drive, and the roller is rotated clockwise at low speed, i.e., the countercurrent rotation (the permanent magnet is mounted on the shaft inside the roller and does not rotate with the roller). After repeated experiments, Galvanized line if the speed is too fast, the roller surface adsorption of iron powder contained too much water, waste collection box will soon be filled, is not conducive to the subsequent separation of the iron powder processing; if the roller Cylinder speed is too slow, the magnetic separator of the iron removal rate; Galvanized line when the drum speed of 1 r / min when the best effect. Galvanized line To achieve 1 r / min roller speed, select the rated voltage 220 V, rated power 3.5 kW, the output speed of 20 r / min gear motor and gear ratio of 1/20 of the reducer.