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    Structural Steel For Through-Surface Hardening
    2.
    发明申请
    Structural Steel For Through-Surface Hardening 审中-公开

    公开(公告)号：US20160017468A1

    公开(公告)日：2016-01-21

    申请号：US13979167

    申请日：2011-04-28

    申请人： Anatoliy Alexeevich Kuznetsov ,  Arkadiy Moiseevich Peker ,  Alexey Alexandrovich Kupriyanov ,  Igor Semyonovich Lerner

    发明人： Anatoliy Alexeevich Kuznetsov ,  Arkadiy Moiseevich Peker ,  Alexey Alexandrovich Kupriyanov ,  Igor Semyonovich Lerner

    IPC分类号： C22C38/58 ,  C22C38/50 ,  C22C38/46 ,  C22C38/02 ,  C22C38/42 ,  C22C38/34 ,  C22C38/06 ,  C22C38/04 ,  C22C38/54 ,  C22C38/44

    CPC分类号： C22C38/58 ,  C21D1/18 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/34 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/50 ,  C22C38/54

    摘要： The invention refers to development of chemical composition of perlite-class structural steels hardened by thermal treatment—through-surface hardening (TSH). The technical result is to obtain low and specified hardenability 3rd generation LH (SH) steels with a finer austenite grain ##11-13 GOST5639 (ASTM), even more stable preset hardenability (DI) with a substantially smaller To obtain a finer austenite grain and more stable hardenability—DI, with a substantially smaller deviation range and hardened layer depth directly obtained on parts subjected to TSH, as well as the possibility of machining thinner, smaller and other parts with the through-surface and through-thickness hardening. To achieve the technical result, structural steel was proposed for through-surface hardening with the following components ratio, weight %: carbon—0.15-1.2; manganese—not more than 1.8; silicon—not more than 1.8; chrome—not more than 1.8; nickel—not more than 1.8; molybdenum—not more than 0.5; tungsten—not more than 1.5; boron—not more than 0.007; copper—not more than 0.3; aluminum—0.03-0.1; nitrogen—not more than 0.1; titanium—not more than 0.4; vanadium,—not more than 0.4; zirconium—not more than 0.4; niobium—not more than 0.1; tantalum—not more than 0.1; calcium—not more than 0.03; sulphur—not more than 0.035; phosphorus—not more than 0.035; iron and unavoidable admixtures—rem., with ideal diameter determined by the following mathematical formula: Dkp.=K·√C·(1+4.1·Mn)·(1+0.65·Si)·(1+2.33·Cr)·(1+0.52·Ni)·(1+0.27·Cu)··(1+3.14·Mo)·(1+1.05·W)·[1+1.5(0.9−C)]·(1−0.45C′)·(1−0.3Ti)·(1−0.35V)·(1−0.25Al), Where: Dcr is the ideal diameter, mm, K is the coefficient whose value depends on the actual austenite grain size according to the ASTM, GOST5639; C, Mn, Si, Cr, Ni, Cu, Mo, W are components, weight %, contained in the austenite solid solution at the final heating temperature preceding hardening cooling, [1+1.5(0.9−C)] is the multiplier taken into account only if boron is present in steel in the amount of 0.002-0.007 weight %; C′, Ti, V, Al are components, weight %, not contained in the austenite solid solution, but present in the form of structurally-free secondary carbonitride phases at the final heating temperature preceding hardening cooling, C′ is carbon in the excessive cementite of hypereutectoid steel.

    Automotive Leaf Spring
    3.
    发明申请
    Automotive Leaf Spring 审中-公开

    公开(公告)号：US20200156428A1

    公开(公告)日：2020-05-21

    申请号：US16194772

    申请日：2018-11-19

    申请人： Anatoliy Alekseevich Kuznetsov ,  Arkadiy Moiseevich Peker ,  Semyon Brayman

    发明人： Anatoliy Alekseevich Kuznetsov ,  Arkadiy Moiseevich Peker ,  Semyon Brayman

    IPC分类号： B60G11/02 ,  C21D1/06

    摘要： Automotive leaf springs are produced from low-hardenability and specified hardenability steel, with identical and different length, width and thickness and constant or variable cross section profile, that are subjected to through-surface hardening and low tempering. The ideal critical diameter of hardening, carbon content and hardened layer depth depend on the thickness of constant cross section profile leaf and maximum and minimum thicknesses of variable cross section profile leafs. Adherence to the optimum correlations of parameters indicated make it possible to produce leaf springs with the best mechanical properties and longevity.