The invention discloses a
smelting method of low-cost high-purity 60Si2Mn
spring steel. The method comprises the following process production steps of converter blowing adopting, LF
ladle refining, RHvacuum treatment and
casting by a curved spray
continuous casting machine. In a converter tapping process,
molten steel is subjected to aluminum strong deoxidation, recarburization, alloying and slagging, in a refining process, heating and composition fine-adjusting are conducted, staged bottom blowing stirring control,
slag surface deoxidation and
molten steel precipitation deoxidation are conducted, and the aluminum content is 0.030%-0.0.45% in a control process; the
molten steel is subjected to vacuum treatment, and the molten steel is kept for 20-30min under the state of vacuum less thanor equal to 100pa; and the molten steel is left to stand soft blowing, and the curved spray
continuous casting machine conducts protective
casting. According to the method, through aluminum strong deoxidation of the molten steel at an initial stage,
diffusion and
precipitation deoxidation in a refining process,
high aluminum content of the molten steel, high
alkalinity refining slagging, and molten RH high vacuum circulation treatment, the high-purity 60Si2Mn
spring steel can be obtained, and the production steps are few, a single
precipitation deoxidation way is used, and the production costis low.