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Introduction
Carbon steel-phosphorus ferroalloy (YB/T5036-1993) is a kind of ferroalloy which is produced by smelting iron, phosphorus, and other additive elements. It is mainly used for alloying and deoxidizing, and is an ideal deoxidizing element for the production of low carbon steel, medium and high carbon steel. The phosphorus ferroalloy YB/T5036-1993 (hereinafter referred to as YB/T5036-1993) has become an important component of Chinas industrial production since its launch in 1993.
In China, it is mainly used for steelmaking, including ordinary carbon steel and low alloy steel, as well as spheroidizing annealing and normalizing of medium and high alloy steel. YB/T5036-1993 is the standard of carbon steel-phosphorus ferroalloy in China. This standard stipulates the requirements and methods of testing for the production of carbon steel-phosphorus ferroalloy.
Chemical Composition
YB/T5036-1993 stipulates the chemical composition requirements of phosphorus ferroalloy. The maximum allowable limits of chemical composition are shown in Table 1.
Table1 Chemical composition of YB/T5036-1993
Component Maximum allowable limits (weight %) P 0.65-0.8 C 0.04-0.09 S 0.03-0.05 Si 0.30-0.50 Mn 0.30-0.50 Pb 0.02
Physical Properties
YB/T5036-1993 also stipulates the physical properties requirements of phosphorus ferroalloy, including size, appearance and its flow features. The requirements are shown in Table 2.
Table2 Physical property requirements of YB/T5036-1993
Property Requirement/Test met hods Size (mm) 10-20, 20-30, 30-50, 50-80 Appearance Not more than some allowed number of pieces of impurities Flow L check to ensure that it reaches the marked number.
Testing
In order to ensure the quality of YB/T5036-1993, its testing requirements are also specified. This includes a variety of tests, such as chemical composition analysis, physical property testing and impurity analysis.
Chemical composition analysis: After taking a portion of samples from the as-received material, it is necessary to analyze the content of phosphorus, carbon, silicon and other elements.
Physical property testing: It can be carried out by the flow table method. The requirements include size and appearance.
Impurity analysis: The impurity content of the material should be determined by spectrum or other methods.
Conclusion
Carbon steel-phosphorus ferroalloy (YB/T5036-1993) is an important material used in industrial production. It is mainly used for steelmaking, including ordinary carbon steel and low alloy steel, as well as spheroidizing annealing and normalizing of medium and high alloy steel. Its production is required to meet the requirements and methods of testing set by YB/T5036-1993. This includes chemical composition analysis, physical property testing, and impurity analysis. The quality of alloy produced should be strictly controlled in order to ensure that it meets the industry standards.
