Abstract Riverside landslides can induce surge waves during the process of entering water. The landslide‐induced wave is often regarded as a significant secondary disaster, its impact region likely to be even more remarkable than landslide itself. Due large deformation soil and water body evolution waves, commonly adopted multi‐phase flow models mesh‐based methods coupled with discrete element have some limitations, such weak accuracy, simulation distortion immature coupling algorithms. As...

Abstract The existing form of CaS inclusion in Ca-treated, Al-killed steel during secondary refining process was investigated with scanning electron microscopy and an energy-dispersive spectrometer (EDS). results 12 heats industrial tests showed that has two kinds precipitation forms. One takes place by the direct reaction Ca S, other CaO calcium aluminates dissolved Al S liquid steel. Thermodynamic research for different modes under temperature carried out. In particular, CaO-Al 2 O 3 -CaS...

The magnetic, heat transfer and flow phenomenon occurring in the continuous casting process under mold electromagnetic stirring was further analyzed by solving 3-D field mathematical model solidification with finite element method volume method, respectively. results indicate that solidified shell thickness located effective region fluctuates because of unsteady scouring stirring. maximum rotational velocity is a key parameter to billet when controlling intensity. When reaches 0.32 m/s, mush...

It is essential to understand the relationship between electromagnetic field and transport process in a channel type induction heating tundish precisely improve quality of slab. A validated mathematical model was established investigate magnetic characteristics, flow, temperature distribution movement inclusions. In comparison with prior researches, we obtained effective active zone by analysing dimensionless parameters Ha, N Re. should contain channels nearby walls connected channels....

In the present study, effect of cerium content in range 0~0.0676% on oxygen and sulfur content, as well quantity, size, distribution, type inclusions C104Cr saw wire steel, were investigated using thermodynamic analysis, metallographic examination, SEM-EDS, component analysis. The results showed that conducting a vacuum carbon pre-deoxidization process is helpful preventing formation Ce2O3 smelting experiment, has beneficial terms modifying inclusions. When steel 0.0136% or 0.0277%, main are...

A novel method of combined argon gas stirring and bottom-rotating electromagnetic in a ladle refining process is presented this report. three-dimensional numerical model was adopted to investigate its effect on improving flow field, eliminating temperature stratification, homogenizing concentration distribution. The results show that the force has tendency spiral by spinning clockwise horizontal section straight up along vertical section, respectively. When applied gas-liquid two phase flow,...

The effects of the Al2O3 content and basicity CaO–SiO2–Al2O3–10 wt.% MgO refining slag on inclusions removal in 55SiCr spring steel were investigated. viscosity was studied using a viscometer, while microstructure investigation involved water-quenching furnace Fourier-transform infrared spectrometer. influence mechanism adjustment explored through thermodynamic calculations kinetic analysis. results indicated that molten increased gradually with increasing due to it degree polymerization...

The individual effect of Ca‐containing ferrosilicon, MgO crucible, and slag–steel refining on the formation endogenous CaO‐containing inclusion in steel is investigated by contrast experiments. Experiments using ferrosilicon are compared with high basicity slag crucible inclusions to experiments purity Si. It found that influence has a noticeable impact CaO‐containing, while reaction refractory mainly increase (MgO) inclusion. When added after Al deoxidation, 2 O 3 MgO– x low content...

The current study investigates the effect of timing addition ferrosilicon with Al and Ca impurities on inclusion evolution during refining process Al‐killed gear steel SCr420H. To achieve this aim, laboratory experiments thermodynamic calculations are conducted. sample, ingot polished analyzed by scanning electron microscope‐energy dispersive spectrometer. results show that mainly exist as intermetallic compounds or segregated phase boundary between FeSi 2 Si in ferrosilicon. content...

Tyre cord wires and steel saw represent typical precision pearlitic wire rods. Reducing the rate of breaking is one most concerning problems in metallurgy. This paper surveys technical progress control inclusions central segregation tyre last 20 years, including [Al]s content steel, selection better refractories, deletion VD process, developing new kinds refining slag system, optimize structure tundish, Ti-containing inclusions, feeding trip into a mould, electromagnetic stirring technology,...

Combining the radial well drilling and hydraulic fracturing technique, production capacity of reservoirs with low-permeability can be improved effectively. Due to existence holes, stress around is redistributed, initiation propagation fractures are different those in traditional fracturing. Therefore, it necessary study influences horizontal wells on The laboratory experiment was conducted simulate physical model holes. experimental results showed that, compared borehole without sample hole...

Abstract We performed a laboratory investigation at 1,873 K using MoSi 2 furnace to study the effect of refractories on inclusions in 55SiCr suspension spring steel. Three types crucible materials (Al O 3 , MgO·Al and MgO–CaO) were investigated. The results this indicated that SiO Al not suitable for making By contrast, MgO–CaO was perfect choice producing advantages crucibles smelt steel summarized three aspects as follows: (i) stability quite good; (ii) could act desulfurizer...

The robot-based automatic power grid defect elimination device represents the future direction of inspection and devices. However, presence strong electromagnetic interference in vicinity grids poses potential risks to application This study initially conducts theoretical analysis calculations analyse spatial distribution fields around 220kV 100MW high-voltage lines a grid. results indicate that electric field intensity can exceed 70kV/m areas near these lines. Subsequently, within...

Road intersections are important component and the weak link of transportation system which play a decisive restriction role for urban traffic flow. This paper constructs Game model behaviors intersection participants, analyses balance participants. The analysis believed that public education has good effect to alleviate conflict vehicles violating regulations carry on punishment can effectively reduce issue vehicle pushes aside in between pedestrians.