Recently, through the continuous efforts of our scientific research personnel, the original ryl-05 fluorescent instrument special fast automatic melting furnace has been upgraded again. There are two aspects in this upgrade: the first is to improve the bracket, the new bracket has better heat resistance and longer service life, which provides the possibility for enterprises to reduce the cost of experiment; the second is to change the overall design of heating furnace cover from the original one piece of material to the present multiple pieces of refractory material splicing design, so as to avoid cracking and slag dropping of furnace cover lining, which is an experiment The accuracy also provides a more powerful guarantee.