About forging oxygen lance nozzles
A. Assembling and forging oxygen lance nozzles' usage overview and introduction
After forging, the nozzle copper microstructure is the Twins α And the purity of the copper is 99.97%. The density quality is higher, and the properties of thermal conductivity, welding and machining etc, are better than that of casting nozzles.
B. Introduction of using environment
Oxygen converter steelmaking is carried out within more than 10 minutes for the oxygen and gas supply, and in this short time, the task of slagging, decarbonization, desulfuration, dephosphorization, impurity, gas-disposing and heating must be completed. The reaction in the blowing is a complex process. The working nozzle have to bear high-heated load. The temperature of the reaction zone in the converter pool is above 2000 degree Celsius, and the melting point of copper is only 1083 degree Celsius. In order to increase durability and deformation resistance, and strengthen cooling water way. The effect is obvious, and the working situation is more ideal.
C. Usage introduction of assembling and forging nozzles'structure and properties
Forging nozzle wall is homogeneous and smooth. Under the premise of guaranteeing mechanical strength, wall thickness is thinned. After the improvement, the heat can be transferred from the high-temperature outer surface to the wall by cooling water more rapidly. The guidance tapping cone is set up above and under the inlet. Then the flow can converge from round to center and in the center, the flip enhances cooling the nozzle end. After the enhancement, even though the nozzle end center surface sticks steel, 'eating in'phenomenon can happen, and the nozzle can continue to be used for a longer time. Because the pressure loss is mainly concentrated on the end, the high-pressure cooling water rises 30-40% more than the original and pressure control is 1.2Mpa to improve the cooling efficiency, then the entrance flow speed in the nozzle end can reach 9.6 to 11.2 m/s, and maximum temperature rising is 15 degree Celsius around. So better cooling effect further ensures the stability of jet and extends nozzles'lives. The life if general forged is 2 to 3 times than that of the casting nozzle.
Shandong Chongsheng Metallurgical Oxygen Lance Co., Ltd., as an enterprise specialized in researching and producing of metallurgical lances & nozzles, the headoffice lies in Weifang Hi-Tech Industry Development Zone, Shandong Province and branch company lies in Fangzi District, Weifang City.
We hold powerful scientific research strength, advanced equipments and complete methods of checkout. Based on the research superiority and perfect quality of products, our company holds the market share more than 80 percent in our country.
Regarding Science and technology is the first productive force as our guiding principle, we have assimilated a lot of advanced technology from home and abroad and established an advanced system of checkout, such as the oxygen jet flow laboratory, the water flow testing laboratory, the X-ray nondestructive tensile test of the weld and the scientific research establishment of the ultrasonic end surface inspection, etc.
Our chief products, of more than 100 specifications, are the nozzles and oxygen lances for converter and electronic arc furnace, the water-cooling cast copper parts such as damper and slag hole of blast furnace, electrode tip is used on electric arc furnace. The yearly capacity of pure copper can reach over 800 tons. Our products are provided to more than 130 internal steel plants, such as Baoshan ISG (full name: Iron and steel group), Wuhan ISG, Shoudu ISG, Handan ISG, etc. Our products have replaced the same products which imported from Japan, Germany, USA, France and Italy, they also have been exported with a large quantity to many foreign countries, such as India, New Zealand, Australia, Belgium, Turkey, etc.
Our new products and new technologies have stood the antecedent in the industry with abundant capital and powerful scientific research strength and established a substantial technology of leading in the biggest 335 coned-lance at home, the protecting technology of nozzle end surface and the vacuum pressure casting, assembling and forging nozzle, etc. At present we have got sixteen Practical National Pattern Products and won in succession The Prize of Shandong Excellence New Product, The 2ND Prize of Science Advance of Shandong Province, The 3rd Prize of Science Advance of Chinese Acadeny of Sciences, Ten Prize for Vital Scientific Achievement of Baoshan ISG. After being awarded The National, Provincial and Development Zone New Products and listed in The Torch Development Project of Shangdong Province between the year of 1994 and 1996. Our company has also won more honors, such as Shandong Provincial Advanced Enterprise, Shandong Provincial Excellent Enterprise, The Star Enterprise in Development Zone, "The Reasearch Center of Oxygen Lance and? Lance Nozzle of Shandong Province", "The Forward-looking Corporation of Science and Technology progress", "The National New Products in 2006"etc. We passed the confirmation of ISO9001 Quality System Certification in 1999. The brilliant development of our corporation can be expected. We have become the market leader in oxygen lance industry.
Quality first and serving for steel making is the developing principle of our corporation. We will serve our clients with the topping technology, the topping checkout, the topping products and the topping service. Key point of smelting excellent steel is oxygen lance. We warmly welcome all guests and tradesmen both at home and abroad to our company to inquire and visit.
