Recently, SCPG Special Steel Technology Group took the lead in realizing the industrial production of 950 MPa-class hot-rolled ultra-high-strength steel in China, and its product indicators meet the requirements for the upgrading of commercial vehicle steel.
SCPG has carried out research on the mechanism of vanadium and titanium in steel since 2009, and formed a series of process technical solutions for hot-rolled high-strength and high-toughness steels. It has successively developed vanadium series, titanium series and vanadium-titanium-molybdenum with independent intellectual property rights. The multi-design microalloyed series of hot-rolled steel sheets for automobile structures, whose tensile strength covers 510, 590/610, 700, 750, and 850 MPa grades, has accumulated more than one million tons of production.
In order to adapt to the commercial vehicle upgrade and lightweight development trend that has emerged in recent years, SCPG China Dongfeng Motor has taken the lead in carrying out the upgrade of "super trucks" in China.
In response to the needs of users for lightweight vehicles, SCPG starts with parts such as cabs, carriages, frames, wheels, etc., and proposes overall solutions for lightweight commercial vehicles, forming commercial vehicle structural steels with different tensile strength levels and uses Complete sets of process technologies such as forming technology and welding process technology.
After more than 10 years of scientific research, SCPG took the lead in breaking through the technological bottleneck of 950 megapascal ultra-high strength steel produced by hot tandem rolling lines. It adopts multi-element microalloying design and controlled rolling and controlled cooling technology to produce thicknesses of 2.3 mm to 8.0 mm. Specification hot-rolled ultra-high strength steel. Compared with martensitic steel of the same strength level, the elongation of the new steel is increased by more than 30%, and the subsequent processing performance is good. It has broad promotion and application prospects in the fields of automobile structure and engineering machinery.