Events Reasons Solutions 1 Rolled parts not bitten into the rolls and steels stacked The end part of a billet is forked To pick out unqualified billet The guide isn’t installed properly To Reinstall the guide The rolling piece in the guide orgroove is blocked To remove away obstructive Not polish new groove after replacenew groove. To polish new groove andregulate the rolling speed 2 Steels piled after the rolling piece have been bitten into the rolls The speed of rolling piece isn’t right. Correctly setting the speed Roll diameter input error To input the correct rolldiameter Tension setting is too small afterchanging rolls and grooves Increase the tension settingappropriately Incomplete grinding after changingnew groove Further grinding of the rolls 3 Steel stackeddue to steel jamming between rolls Motor overload,overspeed,and dropout Check steel temperature,roll size,rolling speed and electrical faults 4 Flying shear 1#,2#steel stacking Flying shear overrun speed is toolow Increase the overrun speedof flying shear Flying shear does not cut the head Check power supply,hotmetal detector Shear blade aging or poor overlap Replace shear blade,adjustoverlap Interrupt flying shear action Checking hot metaldetectors…
The rolling line of each stand should align in the same straight line so that is the production can normally work. If there is light offset of stand rolling line, the guide could be damage caused by uneven wear of the hole pattern; serious offset can directly cause the accident of steel stacking. The meaning…
1. HISCO’s domestic maximum thickness 3.5Ni steel will be used at the world’s largest deepwater oil field HISCO’s 3.5Ni steel with a thickness of 160 mm, the largest in China, has successfully passed the customer’s acceptance. The surface quality, low-temperature impact toughness, plate shape and other acceptance indicators far exceed…
Traditional top charging electric furnace, simple equipment, less investment in land area, flexible and simple operation, but its production process is not continuous, heat loss is large, the impact on the environment is large. Theoretically, the single furnace smelting cycle is 60min, electricity consumption is 400kWh/t, and electrode consumption is…
Today, the world’s first demonstration project of direct reduction hydrogen metallurgy with zero reforming of coke oven gas, the first phase of hydrogen metallurgy demonstration project of HISCO Group with 1.2 million tons, marked the transformation of China’s steel industry from traditional “carbon metallurgy” to new “hydrogen metallurgy”. This marks…
The intelligent scrap rating system can complete the rating of the whole vehicle gauge material type, and is more capable of measuring multiple thickness mixed material types, and rating and deducting weight according to the weight proportion of different thickness material types in the whole vehicle. The system has the…
Chinese steel enterprises experienced sharply shrinking profit due to various unfavourable factors in the past 11month. Zhang Xiaogang, president of the Chinese Society for Metals, pointed out at the “2022 China Steel Technology and Economy High-end Forum” on the 10th that the Chinese steel industry as a whole has entered…
United States crude steel production reached a historical peak of 137 million tons of crude steel production in 1973, respectively, and was reduced to 106 million tons in 1975 by the outbreak of the first oil crisis. After the second oil crisis, U.S. steel substantial de-capacity, crude steel production fell…
On November 23-24, 2022, the 13th Annual China Iron and Steel Conference was successfully held online, which was hosted by China Institute of Metals (CIM) and assisted by CMI Group Co. The theme was “Building a green, low-carbon, intelligent and sustainable steel industry”, and leaders, academicians, experts, scholars and scientists…
From the Institute of Geochemistry of the Chinese Academy of Sciences (IGCS) , for the first time, the presence of impact-genesis submicron magnetite in lunar soil has been confirmed by an in situ microzonal analysis recently conducted by the research team of Li Yang of IGCS for sulfide particles in the…
