Analysis and discussion on Chinese patents related to steel cleaning and purification technology
This article collected Chinese patent literature on steel cleaning and purification technology from January 1,2008 to December 31,2022 through patent database retrieval,and used it as an analysis sample.The quantitative a-nalysis method was used to analyze from the aspects of application volume,applicants,inventors,legal status,etc;Then,the technical field of the patent and the citation of the patent were analyzed;Finally,a detailed introduction was given to important related patents.The results show that:(1)In the past decade,the number of patent applica-tions for steel purification in China has been on the rise;(2)Patent applications are mainly concentrated in large steel enterprises,metallurgical universities,and research institutes;(3)The removal technology of S,P,O,N,and H in steel is constantly improving,but gradually approaching the limit level.The removal and control technolo-gy for inclusions in steel with different varieties and performance requirements is developing rapidly.The improve-ment of clean steel technology equipment and devices further promotes the clean purification of molten steel.The development of clean steel refractory materials also promotes clean steel,corrosion resistance,and long service life.
steelcleaning and purificationpatent analysisquantitative analysis
NETL
NSTL
万方数据
