摘要:
In connection with a process of implementing galvanizing and galvannealing on steel strips containing highly oxidizable elements such as Si, Mn, P, Ti, Nb, Al, Ni, Cu, Mo, V, Cr, and B, after annealing in a continuous line or implementing electroplating after annealing, the present invention provides a method for restraining non-plating at low cost in a stable manner and a surface treated steel strip having minimal non-plating. By applying on at least one surface of a steel strip a Fe plating having a coating weight of 0.1-10 g/m.sup.2 and an oxygen content of 0.1-10 wt %, followed by annealing and then zinc or zinc alloy plating, there is obtained a surface treated steel strip having minimal plating defects which includes a Fe plating layer immediately below a zinc or zinc alloy plating layer and a steel alloying element concentrated stratum immediately below the Fe plating layer. The Fe plating may be formed using an electroplating bath which contains 0.1-10 g/l of Fe.sup.3+ and a carboxylic acid or an alkali metal salt thereof.
摘要翻译:PCT No.PCT / JP93 / 00394 Sec。 371日期1994年04月12日 102(e)日期1994年4月12日PCT 1993年3月30日PCT公布。 公开号WO93 / 20254 日期:1993年10月14日。关于在含有高度可氧化元素如Si,Mn,P,Ti,Nb,Al,Ni,Cu,Mo,V,Cr和B的钢带上实施镀锌和镀锌合金的过程 在退火后连续退火或实施电镀后,本发明提供了一种以低成本稳定地抑制非电镀的方法和具有最小非电镀的表面处理钢带的方法。 通过在钢带的至少一个表面上涂布涂布重量为0.1-10g / m 2,氧含量为0.1-10wt%的Fe镀层,然后进行退火,然后进行锌或锌合金镀覆 具有最小电镀缺陷的表面处理钢带,其包括在锌或锌合金镀层正下方的Fe镀层和紧邻Fe镀层下方的钢合金元素浓缩层。 可以使用含有0.1-10g / l Fe 3+和羧酸或其碱金属盐的电镀浴形成Fe镀层。
摘要:
A fixing roller for use in the fixing stage of a fixing apparatus such as a copying machine provided with multiple rubber and/or fabric layers of certain thicknesses and hardnesses surrounding a core member to improve the copying characteristics of the roller.
摘要:
A novel plasmid pEAP2, which was constructed from Bacillus sp. 170 chromosomal DNA carrying the gene for extracellular production of penicillinase and a vector plasmid pMB9. A novel microorganism, Escherichia coli HB101(pEAP2) carrying the plasmid pEAP2 and being capable of extracellular production of penicillinase. The method for cultivation of the microorganism is characterized by culturing it in the medium containing NaCl (or KCl) for 16-48 hours. According to this invention, useful high-molecular substances can be produced in a high yield.
摘要:
A fixing roller for use in the fixing stage of a fixing apparatus such as a copying machine provided with multiple rubber and/or fabric layers of certain thicknesses and hardnesses surrounding a core member to improve the copying characteristics of the roller.
摘要:
An improved release agent applicator for use with a copying machine in which a porous polyethylene tetrafluoride resin tube is installed in a support with the part of the tube which forms an outlet for the release agent contained in the tube projecting from an opening in the support. The outer surface of the porous tube is covered with a film of a polymer having a low melting point, such as polyethylene. When the applicator is installed, the normal heating of the fixing roll causes the polymer film to melt, opening the applicator for use. Accordingly, leakage from the applicator prior to use is prevented.
摘要:
A method for immobilizing living microorganisms includes a step (1) of disposing a solution containing microorganisms as an electrolyte on the surface of a substrate at least one portion of which is an electrode, and applying a constant potential to the electrode to cause at least a portion of the microorganisms to attach to the surface of the substrate. The constant potential in step (1) is greater than −0.5 V but not greater than −0.2 V (vs Ag/AgCl) or greater than +0.2 V but not greater than +0.4 V (vs Ag/AgCl). The electrolyte in step (1) does not contain a source of nutrition for the microorganisms.
摘要:
An automatic pouring method without using a servomotor having a vertical output shaft, establishing the pouring at a low level, eliminating the unstable pouring, sand inclusion, and gaseous defects. An automatic pouring method using a ladle to be tilted for pouring molten metal into a pouring cup of a flaskless or tight-flask mold in at least one pouring device movable along an X-axis parallel to a molding line in which the mold is transferred, wherein the ladle is moved along a Y-axis perpendicular to the molding line in a horizontal plane and is tilted about a first axis of rotation and further about a second axis of rotation.
摘要:
Disclosed is an austenitic welding material which contains C: 0.01 wt % or less, Si: 0.5 wt % or less, Mn: 0.5 wt % or less, P: 0.005 wt % or less, S: 0.005 wt % or less, Ni: 15 to 40 wt %, Cr: 20 to 30 wt %, N: 0.01 wt % or less, O: 0.01 wt % or less, and the balance of Fe and inevitable impurities, wherein the content of B contained as one of the inevitable impurities in the welding material is 3 wt ppm or less, and the total content of C, P, S, N and O in the welding material is 0.02 wt % or less.
摘要:
An engine balancer includes a pair of balancer shafts and a balancer housing for housing the balancer shafts, and is placed in an oil pan at the bottom of an engine. The balancer housing includes a pair of front and rear bearing walls respectively supporting the balancer shafts with rolling bearings interposed therebetween. The bearing walls of the balancer housing are attached to bearing walls for a crankshaft. The housing body has an aperture at the top thereof. The aperture of the housing body is covered with a plate-shaped cover member thinner than a member forming the housing body.