Foreign scholars and enterprises have done a lot of research on the application of biomass in electric arc furnace steelmaking sector, the main research direction is to use biomass as carburizing agent and blowing agent in EAF smelting process. Based on the current research, it can be found that there are two…
Brushed motors are mechanically commutated, the magnetic poles do not move and the coils rotate. When the motor is in operation, the coil and commutator rotate, the magnets and carbon brushes do not. The alternating change in the direction of the coil current is done by the commutator and brushes…
The beam jet lance is similar to a laser beam and can maintain its initial axial velocity over a longer distance, resulting in smaller expansion and decay of the central supersonic jet, longer blowing distance and increased penetration depth and stirring strength of the oxygen jet into the molten pool.…
The main reasons for the poor circle formation of wire out of the laying head are as follows. (1) Too much tension between mills (2) There is a deviation on water-cooled section alignment, nozzle conduit is worn to cause the unstable operation of the mill. (3) Roll ring of pinch roller is worn badly. Inappropriate clamping force of the…
The entrapped slag is one of the main defects on the surface of ultra-low carbon steel hot-rolled coil, the overall macroscopic morphology of the defect is black color or black – white strip, and there is obvious difference with the base sheet, intermittent distribution along the rolling direction, the length varies, often accompanied by warping…
In operation, continuous casting ladle will appear slag adhesion or tumor phenomenon, resulting in a reduction in the effective volume. As the slag is very hard, it tends to intermingle with cold steel, which makes ladle unpacking very difficult and increases the number of ladle unpacker damages and repairs. With the…
Seven common material testing methods in steel material labs, composition, spectra, mass spectra, energy spectra, morphology, physical structure, and thermogravimetry. 1.Composition analysis Composition analysis can be divided into two types according to the analysis object and requirements: micro sample analysis and trace component analysis. 2.Spectral analysis 1) Atomic Absorption Spectrometry…
(1) Higher descaling pressure Increasing the descaling pressure can improve the descaling effect, now the descaling pressure can reach 18-22MPa, or even higher. (2) High pressure and high flow rate descaling pumps At the beginning of high-pressure water descaling, piston pumps were used, with low pump pressure, small flow rate…
Heavy shock load If the shock load of the fixed-size machine is too large, it may choose a frequency conversion motor for greatly reducing the impact load, adjusting the speed of the rollers through the frequency converter, and can control speed and stopping with a grating detection installed on both…
1.Coke oven gas reduction technology is becoming mature Coke oven gas is a hydrogen-rich high-quality resource with 55%-60% hydrogen content and about 25% methane content. In December 2022, the 600,000 tons/year scale hydrogen metallurgy demonstration project of HISCO Group Zhang Xuan Technology with coke oven gas as reducing gas was…
