Refining and purification is a significant way to obtain pure and high-quality magnesium alloy melts.This paper summarizes the flux refining methods and non-flux purification methods(blowing purification,filtration pu...Refining and purification is a significant way to obtain pure and high-quality magnesium alloy melts.This paper summarizes the flux refining methods and non-flux purification methods(blowing purification,filtration purification,electromagnetic purification and ultrasonic purification).It also introduces the composite refining technologies that have been widely researched and applied in recent years,including low-voltage pulse electromagnetic technology,ultrasonic argon purification,self-purification technology and non-flux continuous purification technology.Among them,the non-flux continuous purification technology integrates a variety of purification methods,which can produce high-quality magnesium alloy continuously and steadily,realize environmental protection production,and achieve remarkable technical and economic benefits.展开更多
Through study,it is found that since 1952,there has been a long-run equilibrium relationship between China's rural financial market growth and rural economic growth,the government-led rural financial market growth...Through study,it is found that since 1952,there has been a long-run equilibrium relationship between China's rural financial market growth and rural economic growth,the government-led rural financial market growth has effectively supported rural economic growth,and increasing the farmers' financing ratio has always helped to boost long-term growth of the rural economy.However,dominated by market mechanism from 1978,there is only one-way support relationship:rural economic growth brings about quantitative growth of rural financial market.展开更多
基金The authors gratefully acknowledge the financial support provided by 2018 Dongguan Key Technology Key Projects(2019622134013)。
文摘Refining and purification is a significant way to obtain pure and high-quality magnesium alloy melts.This paper summarizes the flux refining methods and non-flux purification methods(blowing purification,filtration purification,electromagnetic purification and ultrasonic purification).It also introduces the composite refining technologies that have been widely researched and applied in recent years,including low-voltage pulse electromagnetic technology,ultrasonic argon purification,self-purification technology and non-flux continuous purification technology.Among them,the non-flux continuous purification technology integrates a variety of purification methods,which can produce high-quality magnesium alloy continuously and steadily,realize environmental protection production,and achieve remarkable technical and economic benefits.
文摘Through study,it is found that since 1952,there has been a long-run equilibrium relationship between China's rural financial market growth and rural economic growth,the government-led rural financial market growth has effectively supported rural economic growth,and increasing the farmers' financing ratio has always helped to boost long-term growth of the rural economy.However,dominated by market mechanism from 1978,there is only one-way support relationship:rural economic growth brings about quantitative growth of rural financial market.
