Hot-dip galvanized steel sheet and process for production thereof
    42.
    发明授权
    Hot-dip galvanized steel sheet and process for production thereof 有权
    热镀锌钢板及其制造方法

    公开(公告)号:US06306527B1

    公开(公告)日:2001-10-23

    申请号:US09685096

    申请日:2000-10-11

    IPC分类号: B32B1518

    摘要: A hot-dip galvanized steel sheet which is produced from a cold-rolled steel sheet, as a base steel sheet, consisting essentially of C: 0.010-0.06 wt %, Si: no more than 0.5 wt %, Mn: no less than 0.5 wt % and less than 2.0 wt %, P: no more than 0.20 wt %, S: no more than 0.01 wt %, Al: 0.005-0.10 wt %, N: no more than 0.005 wt %, Cr: no more than 1.0 wt %, Mn+1.3Cr: 1.9-2.3 wt %, Fe: remainder, and having a structure composed of ferrite and a second phase containing martensite, said second phase in the structure accounting for no more than 20% in terms of area and martensite in the second phase accounting for no less than 50%, and which has a zinc-plated layer formed on the surface thereof by hot-dip galvanizing or hot-dip galvannealing. A process for production of said hot-dip galvanized steel sheet. This steel sheet has a composite structure containing martensite and yet it has a low strength (no higher than 500 MPa) and also has good strength-ductility balance.

    摘要翻译: 一种由冷轧钢板作为基本钢板制成的热浸镀锌钢板,其基本上由C:0.010-0.06重量%,Si:不大于0.5重量%,Mn:不小于0.5 重量%且小于2.0重量%,P:不大于0.20重量%,S:不大于0.01重量%,Al:0.005-0.10重量%,N:不大于0.005重量%,Cr:不大于1.0 重量%,Mn + 1.3Cr:1.9-2.3重量%,Fe:余量,并且具有由铁素体构成的结构和含有马氏体的第二相,所述结构中的所述第二相占面积不大于20% 第二相中的马氏体不低于50%,并且通过热浸镀锌或热浸镀锌合金在其表面形成有镀锌层。 一种生产所述热浸镀锌钢板的方法。 该钢板具有包含马氏体的复合结构,但其强度低(不高于500MPa),并且还具有良好的强度 - 延展性平衡。

    Method of manufacturing a steel sheet
    43.
    发明授权
    Method of manufacturing a steel sheet 失效
    制造钢板的方法

    公开(公告)号:US5085714A

    公开(公告)日:1992-02-04

    申请号:US564756

    申请日:1990-08-09

    IPC分类号: C21D8/04 C22C38/12 C22C38/14

    摘要: A method of manufacturing steel sheets by applying continuous annealing after applying hot rolling or hot rolling and cold rolling by a customary method to steel material, containing less than 0.007% of C, less than 0.1% of Si, from 0.05 to 0.50% of Mn, less than 0.10% of P, less than 0.015% of S, from 0.005 to 0.05% of sol.Al and less than 0.006% of N, further, containing Ti and/or Nb added solely or in combination within such a range that the relationship of the effective amount of Ti (referred to as Ti*) and the amount of Nb in accordance with the following formula (1) with the amount of C can satisfy the following formula (2):Ti*(%)=total Ti(%)-((48/32).times.S(%)+(48/14).times.N(%)) (1)1.ltoreq.(Ti*/48+Nb/93)/(C/12).ltoreq.4.5 (2)if necessary, further containing from 0.0001 to 0.0030% of B and the balance of Fe and inevitable impurities, wherein continuous carburization and/or nitriding is applied, simultaneously, with the annealing such that the amount of solid-solute C and/or the amount of solid-solute N in the steel sheet is from 2 to 30 ppm. Steel sheets having excellent resistance to the cold-work embrittlement or provided with the BH property can be produced without deteriorating properties required for steel sheets, in particular, formability.

    5-Oxo-2,5-dihydro-1,2,4-triazines
    46.
    发明授权
    5-Oxo-2,5-dihydro-1,2,4-triazines 失效
    5-氧代-2,5-二氢-1,2,4-三嗪

    公开(公告)号:US4451283A

    公开(公告)日:1984-05-29

    申请号:US281776

    申请日:1981-07-09

    CPC分类号: C07D253/075 A01N43/707

    摘要: A herbicidal composition which comprises at least one of triazine compounds of the formula: ##STR1## wherein R.sup.1 is a C.sub.1 -C.sub.4 alkyl group or an amino group, R.sup.2 is a C.sub.1 -C.sub.4 alkoxy group, a C.sub.1 -C.sub.4 alkylthio group or a di(C.sub.1 -C.sub.4) alkylamino group and R.sup.3 is a cyclo(C.sub.3 -C.sub.7) alkyl group, a tertiary C.sub.4 -C.sub.5 alkyl group, an adamantyl group or a group of the formula: ##STR2## (in which R is a halogen atom, a C.sub.1 -C.sub.4 alkyl group, a C.sub.1 -C.sub.4 alkoxy group, a nitro group or a trihalomethyl group and n is an integer of 0 to 2) in a herbicidally effective amount and an inert carrier or diluent.

    摘要翻译: 一种除草组合物,其包含下式的三嗪化合物中的至少一种:其中R 1是C 1 -C 4烷基或氨基,R 2是C 1 -C 4烷氧基,C 1 -C 4烷硫基 或二(C1-C4)烷基氨基,R3是环(C3-C7)烷基,叔C4-C5烷基,金刚烷基或下式的基团:其中R是 卤素原子,C 1 -C 4烷基,C 1 -C 4烷氧基,硝基或三卤代甲基,n为0〜2的整数),除了有效量的惰性载体或稀释剂。