Slitting knife sticks to steel The sticking of steel on the slitting knife refers to the phenomenon that the two sides or one side of the slitting knife stick to the slag during the slitting and rolling production process, which will eventually lead to the failure of the slitting. The main reasons for the sticking…
Analysis and Countermeasures of Accidents in the Rough and Middle Rolling Area After the rolled piece is bitten into, pile steel between the racks cause of issue: (1) The rolling speed and roll diameter are not set correctly; (2) The tension setting is too small after changing the roller (groove); (3) The steel temperature fluctuates…
During rolling, the cold roll is subjected to strong internal and external forces such as rolling pressure, bending moment, and shear stress, resulting in cracks in the roll and peeling of the working surface, and the welds, inclusions, and edge cracks of the rolled parts can easily lead to instantaneous high temperatures, resulting in Accelerated…
There are many varieties of high-speed wire rods, especially high-quality special steel varieties such as bearing steel, welding wire steel, cord steel, cold spade steel, spring steel, etc., which require higher surface quality of hot-rolled coils. If there are defects such as scratches on the surface, it will not only cause the final parts of…
In actual production, in the specific steel processing stage, the defects that affect the quality of hot-rolled strip are explored and researched, and the technical problems and the ways to solve the problems are found, which will improve the overall production quality of the steel industry. Corresponding costs and improving the qualification rate have very…
Flame cleaning machine dust removal 1.1 The flue gas generated by the flame cleaner should be controlled,and the dust removal design should consider the characteristics of dust concentration,flue gas moisture content,iron trioxide content in dust,dust particle size etc. 1.2 A detachable movable fume hood is set at the passing part of the blank mold of…
At about 12:00 on September 8, 2020, a red continuous casting slab with a mission started from No. 7 caster. Originally, it needs to be hoisted to the storage area, waiting for the billet to be transported to the heating furnace by car. This time, it is directly transported to the straight rolling rod track.…
The “Integration of Steelmaking, Continuous Casting and Rolling” plan integration and scheduling technology, automatic control technology and comprehensive shape control technology have been developed into key common technologies in the production process of hot-rolled wide strip steel, which are important for energy saving, product quality control, and enterprise economy. Increased efficiency is decisive. The…
The finishing roll mill unit of a high-speed wire factory adopts a 45° top-crossing cantilever rolling mill designed by Italian DANIELI company, which was put into use in 2015, and its main production wire specifications are Ф5.5 to Ф16mm. The unit is composed of eight rolling mills, and the maximum designed speed of the mill…
This paper introduces the typical high speed bar production process layout and the key equipment of high speed upper steel system The working principle has certain guiding significance to the maintenance and production organization of high-speed bar equipment. With the development of new technology of rolling equipment, the production of bar in steel works has…
