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    • 1. 发明授权
    • PVA membrane and method for preparing the same
    • PVA膜及其制备方法
    • US4073733A
    • 1978-02-14
    • US679441
    • 1976-04-22
    • Kazuhisa YamauchiKoichi TakakuraSyuji KawaiAkio Ohmori
    • Kazuhisa YamauchiKoichi TakakuraSyuji KawaiAkio Ohmori
    • B01D69/02B01D71/38B01D31/00
    • B01D69/02B01D71/38Y10S521/905Y10S521/921
    • A polyvinyl alcohol semi-permeable membrane is prepared which has micropores with an average diameter of 0.02 to 2 microns as defined by the interpore partition walls having thicknesses in the range of 50 to 5000 A and which is characterized by substantial cross-sectional uniformity. The membrane is prepared by extruding a PVA composition containing PAG with a molecular weight of 400 to 4,000 and a carbon-to-oxygen ratio of not more than 3 in a proportion of 2 to 200 parts by weight per 100 parts of PVA into a coagulation bath. In another embodiment of the invention, the membrane is formed from a PVA composition wherein the PAG has a molecular weight of 600 to 3,000 and a C/O ratio of not more than 3, the proportion of the PAG being 15 to 150 parts by weight per 100 parts of PVA and wherein the composition satisfies the relation: 0.65 .ltoreq. CBR (critical blending ratio) .ltoreq. 1.0. The membrane is useful in ultrafiltration, dialytic and osmotic separation applications.
    • 制备聚乙烯醇半透膜,其具有平均直径为0.02至2微米的微孔,其由厚度在50至5000范围内的层间隔壁所限定,其特征在于具有显着的横截面均匀性。 通过将含有分子量为400〜4000的PAG的PVA组合物和2〜200重量份/ 100重量份的PVA的碳 - 氧比率不大于3的PVA组合物挤出成凝固体来制备膜 浴。 在本发明的另一个实施方案中,膜由PVA组合物形成,其中PAG的分子量为600至3,000,C / O比不超过3,PAG的比例为15至150重量份 每100份PVA,其中组合物满足关系:0.65
    • 7. 发明授权
    • High tensile strength steel product for high heat input welding, having excellent toughness in heat-affected zone
    • 用于高热输入焊接的高抗拉强度钢产品,在热影响区域具有优异的韧性
    • US06344093B1
    • 2002-02-05
    • US09566989
    • 2000-05-09
    • Akio OhmoriFumimaru KawabataKeniti Amano
    • Akio OhmoriFumimaru KawabataKeniti Amano
    • C22C3814
    • C22C38/14C21D2211/004C22C38/001C22C38/002C22C38/005C22C38/04C22C38/12
    • A high tensile strength steel product for high heat input welding having excellent toughness in the heat-affected zone and having a tensile strength of at least 490 MPa contains, in terms of percent by weight, from about 0.05% to about 0.18% of C, 0.6% or less of Si, from about 0.80% to about 1.80% of Mn, 0.005% or less of Al, 0.030% or less of P, 0.004% or less of S, 0.005% or less of Nb, from about 0.04% to about 0.15% of V, from about 0.0050% to about 0.00150% of N, and from about 0.010% to about 0.050% of Ti, the ratio of the Ti content to the Al content, Ti/Al, satisfying 5.0 or more, and further contains at least one of from about 0.0010% to about 0.0100% of Ca and from about 0.0010% to about 0.0100% of REM, and the balance being Fe and incidental impurities. In the steel product, oxide inclusions containing, in terms of percent by weight, 20% to about 95% of a titanium oxide, 70% or less of Al2O3, 5% to about 50% in total of at least one of calcium oxide and a REM oxide, and 15% or less of MnO are dispersed.
    • 用于高热输入焊接的高抗拉强度钢产品在热影响区具有优异的韧性并且拉伸强度至少为490MPa,以重量百分比计包含约0.05%至约0.18%的C, 0.6%以下的Si,约0.80%〜约1.80%的Mn,0.005%以下的Al,0.030%以下的P,0.004%以下的S,0.005%以下的Nb,约0.04% 至约0.15%的V,约0.0050%至约0.00150%的N和约0.010%至约0.050%的Ti,Ti含量与Al含量的比例Ti / Al满足5.0以上, 并且还包含约0.0010%至约0.0100%的Ca和约0.0010%至约0.0100%的REM中的至少一种,余量为Fe和附带的杂质。 在钢产品中,氧化物夹杂物含有以重量百分比计,20%至约95%的氧化钛,70%或更少的Al 2 O 3,5%至约50%的总量中的至少一种氧化钙和 REM氧化物和15%以下的MnO分散。
    • 9. 发明授权
    • Continuous casting slab suitable for the production of non-tempered high tensile steel material
    • 连铸板适用于生产非回火高强度钢材料
    • US06358335B1
    • 2002-03-19
    • US09515654
    • 2000-02-29
    • Akio OhmoriFumimaru KawabataKeniti Amano
    • Akio OhmoriFumimaru KawabataKeniti Amano
    • C22C3842
    • C22C38/14C21D8/021C21D8/0226C22C38/04C22C38/12
    • N—V(nitrogen-vanadium) containing continuous casting slab with no surface cracks suitable for the manufacture of non-tempered high tensile steel materials has a tensile strength of 490 MPa or more and excellent toughness. A method of manufacturing non-tempered high tensile steel materials uses the casting slab as the raw material. Compatibility between the desired properties of the materials utilizing VN and inhibition of the surface cracks of test pieces, can be attained by controlling the steel composition and the relationship between each of components of the steel thereby controlling precipitation of VN and MnS. A continuous casting slab with no surface cracks contains C, Si, Mn, P, S, Al, V, N, Ti, B, Ca and REM each within a specified range, and satisfies an equation for the relationship between V and N and a relationship between Mn and S.
    • 含有适合于制造非回火高强度钢材料的没有表面裂纹的连续铸造板的N-V(氮 - 钒)的拉伸强度为490MPa以上,韧性优异。 制造非回火高强度钢材的方法以铸坯为原料。 利用VN的材料的期望性质和试样的表面裂纹的抑制之间的相容性可以通过控制钢组成和钢各组分之间的关​​系来实现,从而控制VN和MnS的析出。 没有表面裂纹的连续铸造板坯在规定范围内含有C,Si,Mn,P,S,Al,V,N,Ti,B,Ca,REM,满足V与N之间的关系式 Mn和S之间的关系