Volumn Content

Steelmaking 2005 Vol.21 Please wait a minute... For Selected: Download Citations EndNote Ris BibTeX Toggle Thumbnails Select Application of Nonsinusoidal Mold Oscillation in High Efficiency Slab Continuous Caster Steelmaking    2005, 21 (06): 1-3.   Abstract （913）            Knowledge map    Save The present paper introduces the parameter selection of the nonsinusoidal oscillation for the No.2 high efficiency Continuous Caster in the Meishan Steel and its application results in reduction of slab surface slag entrapment as well as the oscillating mark depth. Related Articles | Metrics Select Application of Refining Technology of Long Life Combined Blown Converter in CISCO Steelmaking    2005, 21 (06): 4-8.   Abstract （2230）            Knowledge map    Save The present paper introduces the characteristics of double circular seam gas elements and other equipments of the combined blown converter in CISCO. By stringent control of the bottom height of the converter to form a fine slagmetal mushroom head with steady and excellent permeability and by selection of appropriate supply patterns better combined blown effects have been achieved and in the conditions of furnace protection by slag splashing a long campaign life and 100% combined blown ratio realized as well. Related Articles | Metrics Cited: Baidu(2) Select Practice on Continuously Casting 450mm 20G Steel in No.1 Steelmaking Plant of Magang Steelmaking    2005, 21 (06): 9-11.   Abstract （989）            Knowledge map    Save The production process for steel 20G is introduced and effects of hot metal quality, temperature, casting speed and cooling scheme on the quality of billets analyzed, and thus the theoretieal and practical experience can be provided for development of the high quality pipe steel. Related Articles | Metrics Select Preliminary Application of Premixed MgCa Desulphurizer in Hot Metal Desulphurization Steelmaking    2005, 21 (06): 12-15.   Abstract （2498）            Knowledge map    Save Based on the technological route and product mix program of the Central Steelmaking Plant of Chengdu Iron & Steel Co., Ltd., Pangang Group a complete set of processing parameters suitable for production such as injection pressure and injection rate are derived from both the theoretical study and production practice on the optimization of the hot metal desulphurization with Mg based desulphurizer. The production process requirements can be satisfied and the desulphurizing effect guaranteed and utilization of desulphurizer improved since the optimization of the injection technology, thus laying a very solid foundation for improvement of the productivity of the steelmaking system, metallurgical effects and consistent production. Related Articles | Metrics Select Improvement in Internal Quality of Rectangular Bloom by Optimization of Continuous Casting Process Steelmaking    2005, 21 (06): 16-17.   Abstract （2121）            Knowledge map    Save The effects of continuous casting process parameters of the rectangular bloom on the internal quality of the bloom are analyzed and countermeasure to improve the process put forward. By optimization of the continuous casting process the internal quality of the bloom bas been raised and better metallurgical results achieved. Related Articles | Metrics Cited: Baidu(25) Select Study on Breaking of Steel Wire 72A Steelmaking    2005, 21 (06): 18-22.   Abstract （2326）            Knowledge map    Save By way of analysis on the fracture of steel wire 72A during drawing the wire in the Capital Steel it's concluded that the primary causes to the fracture of the steel are inclusions, segregations and surface quality of the steel. In light of different conditions solutions to the wire breaking are put forward. Related Articles | Metrics Cited: Baidu(12) Select Experimental Study on Deep Desulphurization of Clean Steel in Refining Process Steelmaking    2005, 21 (06): 23-26.   Abstract （2198）            Knowledge map    Save Based on the study of RH refining process the law of effects of high CaO slag series on the hot metal desulphurization is explored. Results show that it's definitely possible to refine the clean steel with（S） ＜0.005% provided that the constituents of the slag series are appropriate. In the meanwhile other factors such as the basicity of the slag series, slagging index and slag quantity will also have great effects on the endpoint sulphur content in steel. Related Articles | Metrics Cited: Baidu(2) Select Mathematical Modeling on Dam Setting in Slab Continuous Casting Tundish Steelmaking    2005, 21 (06): 27-29.   Abstract （2234）            Knowledge map    Save According to the structure and process parameters of the tundish in a specific steel plant the hot metal flowing process and the retention conditions are mathematically simulated. The present paper numerically calculates, compares and analyzes the velocity vector diagram and RTD curve of the hot metal flowing under the different settings of the dams in the tundish using soft ware PHOENICS. Results show that the positions of the weirs and dams as well as space between them are of great significance to the hot metal flowing within the tundish. Related Articles | Metrics Cited: Baidu(5) Select Effects of Inert Atmosphere and Reducing Agent on Melting Rate of Low Carbon Mold Flux of Continuous Casting Steelmaking    2005, 21 (06): 30-32.   Abstract （2439）            Knowledge map    Save The melting speed of low carbon CC mold flux composed of different carbon materials (graphite and active carbon) and different carbon mass fraction (2.6%~3.2%) is measured in the air and in the argon. Results indicate that the melting speed of the flux under the protection of the inert gas is slightly slower than that in the air. The effects of three different reducing agents (Si-Ca alloy powder, Si-Al-Ca-Ba alloy powder and Al powder) on the melting speed of a similar low carbon CC mold flux (carbon mass fraction 2.6%) are separately studied. Results show that the melting speed of the flux with addition of the reducing agent is far less than that of the flux without addition of any reducing agent, in which Al plays the most important role in retardation of flux melting. Related Articles | Metrics Select Water Model and Numerical Simulation on Argon Blowing from Bottom of Ladle Steelmaking    2005, 21 (06): 33-36.   Abstract （2244）            Knowledge map    Save A water model for 130t ladle has been established and the mixing time of the molten steel in the ladle measured by conductivity method. The effects of different arrangement of permeable elements and different gas blowing rate on the mixing time of the molten steel in the process of ladle bottom argon blowing have been discussed. In the meanwhile the flow field inside the ladle is numerically simulated and the changes of the flow field in the ladle in different conditions are investigated and the optimal bottom argon blowing positions and argon bubbling patterns determined. Related Articles | Metrics Cited: Baidu(40) Select Steelmaking    2005, 21 (06): 37-40.   Abstract （2215）            Knowledge map    Save The mass transfer characteristics of vacuum refining process under the top oxygen blown conditions in a RHMFB unit are simulated by experiment on absorption of CO2 using NaOH diluted solution, and influences of such a few factors as the lifting gas flow rate, top blow gas flow rate, top lance height, diameter of the up and down snorkels, immersion depth of the snorkels and number and distribution of nozzles on the mass transfer investigated by a 1∶5.45 water model of a 120 t RH-MFB unit and the volumetric mass transfer coefficients measured under the various parameter combinations and the relation between the volumetric mass transfer coefficients and partial pressure of CO2 further clarified. Results indicate that the mass transfer coefficients increase with growup of the lifting gas flow rate, top blow gas flow rate, partial pressure of CO2, inner diameter of snorkel and immersion depth of snorkel. Related Articles | Metrics Select Study on Refining Process for Improvement of Cleanliness of High Carbon Steel Steelmaking    2005, 21 (06): 41-43.   Abstract （4321）            Knowledge map    Save The cleanliness of high carbon steel from EAF-LF-CC billet has been notably improved by means of a series technical measures such as charging DRI, hot metal and pig iron, changing the deoxidation and desulphurization methods for EAF at tapping stage, using appropriate refining slag series and applying Argon gas soft stirring and protection casting practice etc. As the results, the total (O) content attains about 15 ppm, (N) about 45 ppm, (P) about 0.012% and (S) about 0.005%. The average of nonmetallic inclusions (5 μm) approaches to 3.29 entries/mm2 and the ratio of inclusions below 5 μm is 84%. The quantity of large inclusions in billets is less than 5.48 mg/10 kg.  Related Articles | Metrics Cited: Baidu(4) Select Temperature Field Testing of the Ring Carriage of 80t Converter and Analysis on Thermal and Mechanical Coupling Stress Steelmaking    2005, 21 (06): 44-47.   Abstract （1943）            Knowledge map    Save The on-site temperatures of the ring carriages of No.1 and No.2 80t Converters of a specific Company are measured, and then on the basis of the measurements effects of water cooling of the carriage and the gap between the carriage and the furnace stack on the temperature field of the carriage and the stress distribution are studied by modeling the temperature field of the two carriages using the finite element method and by threedimensional thermal and mechanical coupling stress analysis, thus providing necessary reference data for design and use of the ring carriage of the converter. Related Articles | Metrics Cited: Baidu(13) Select Technical Progress in Improvement of EAF Productivity Steelmaking    2005, 21 (06): 48-52.   Abstract （2296）            Knowledge map    Save The electric arc furnace steelmaking productivity has gained rapid progress in the recent years. The primary new technologies that improve the productivity of EAF mainly include EAF power input technology, oxygen input technology and EAF intelligent control technology (expert system). The technical and economical indexes of a few advanced EAFs at home and abroad have been compared. It’s concluded that improvement in the productivity of EAF is the inevitable road to the development of EAF steelmaking. Related Articles | Metrics Cited: Baidu(4) Select Advance of Argon Blowing Technology in CC Tundish Steelmaking    2005, 21 (06): 53-56.   Abstract （2221）            Knowledge map    Save The present paper discusses the mechanism for removal of the inclusions by argon bubbling technology in the CC tundish as well as the main factors affecting the elimination rate of the inclusions in the tundish and reviews the math models modeling the gasliquid phase flow in the tundish in the process of argon blowing, probes to a few different argon bubbling technologies in the tundish and points out the current conditions of the argon blowing technologies in china. Related Articles | Metrics Cited: Baidu(9) Select Steelmaking    2005, 21 (06): 58-62.   Abstract （869）            Knowledge map    Save Related Articles | Metrics