Shanxi tisco company successfully applied for a patent
Shanxi tisco co successfully applied for a patent named “Method for smelting 42CrMo4+HH round steel for ship engine connecting rods”
Patent content
On February 25, 2025, Shanxi TISCO successfully applied for a patent named “Method for smelting 42CrMo4+HH round steel for ship engine connecting rods”, the application publication number is CN119506683A, and the application date is September 19, 2024.
The present invention discloses a smelting method of 42CrMo4+HH round steel for ship engine connecting rods, which is smelted by electric furnace smelting + LF furnace refining + VD refining + die casting. Before electric furnace smelting, the chemical composition content of 42CrMo4+HH round steel is determined according to the hardenability requirements;
During LF furnace refining, nickel raw materials are added and the nickel content in the steel is controlled to [Ni]=0.05%~0.07%. During die casting, argon protection casting is adopted, low superheat fast pouring solidification is adopted, the casting temperature is 1542~1552℃, the casting superheat is 50~55℃, each furnace of molten steel is cast in multiple trays, each tray has multiple ingots, the ingot body casting speed is controlled to 0.05~0.06t/min, and the riser casting speed is controlled to 0.06~0.08t/min.
Summary
The 42CrMo4+HH round steel prepared by the present invention can simultaneously meet the performance requirements of high hardenability, high strength and high toughness.
Tabs:stainless steel，tisco
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