摘要:
The present invention provides a high carbon steel wire remarkably excellent in wire-drawability and fatigue resistance after wire drawing with a low cost due to reduced use of costly alloys. A high carbon steel wire according to the present invention is one excellent in wire-drawability and fatigue resistance after wire drawing, characterized in that; the total oxygen content is 15 to 50 ppm; among non-metallic inclusions included therein, the number of inviscid inclusions is 1.5 pieces/mm2 or less in average under the visual field of an optical microscope; among the inviscid inclusions, the number of those having a composition falling within composition A specified below accounts for more than 20% and the total number of those having a composition falling within composition A or B specified below accounts for 80% or more; and the thickness of the inviscid inclusions having a composition falling within composition A specified below is 40 &mgr;m or less; composition A: containing over 70% of SiO2, composition B: containing 25 to 70% of SiO2, 8 to 30% of MnO, 40% or less of MgO, 35% or less of Al2O3, 25% or less of CaO and 6% or less of TiO2, and at least 5% of one or both of Al2O3 and MgO, and additionally at least 2% of one or both of CaO and TiO2.
摘要翻译:本发明提供一种高成本的钢丝,由于使用昂贵的合金而成本低,拉丝性和拉伸疲劳性优异。 根据本发明的高碳钢丝是拉丝后的拉丝性和耐疲劳性优异的特征,其特征在于: 总氧含量为15〜50ppm; 在其中包含的非金属夹杂物中,在光学显微镜的视场下,非粘性夹杂物的数量平均为1.5个/ mm 2以下; 在无粘连夹杂物中,具有以下规定的组成A内的成分的数量占20%以上,组成在下述A或B组成的组合的总数为80%以上; 具有下述组成A的组成的非粘性夹杂物的厚度为40μm以下; 组合物A:含有超过70%的SiO 2,组合物B:含有25〜70%的SiO 2,8〜30%的MnO,40%以下的MgO,35%以下的Al 2 O 3,25%以下的CaO和6 TiO 2的百分比或更少,以及Al 2 O 3和MgO中的至少5%,还有CaO和TiO 2中的一种或两种的至少2%。
摘要:
The present invention provides a high strength, high toughness steel wire rod useful for a PC steel wire, galvanized steel strands, spring use steel wire, cables for suspension bridges, etc. By hot rolling, then directly patenting or reaustenitizing, then patenting a high carbon steel wire rod of a specific chemical composition of the steel and chemical composition, size, and numerical density of inclusions, piano wire rod or high carbon steel wire rod having a structure of mainly pearlite, having an average value of the proeutectoid cementite area ratio of 5% or less in a center region of less than 20% of the wire rod diameter from the center of the wire rod, having a micromartensite size of the C section of 100 μm or less, having a tensile strength of the 170 kgf/mm2 class or more, and having a drawing ratio at break of 30% or more is obtained.
摘要:
The present invention provides a high strength, high toughness steel wire rod useful for a PC steel wire, galvanized steel strands, spring use steel wire, cables for suspension bridges, etc. By hot rolling, then directly patenting or reaustenitizing, then patenting a high carbon steel wire rod of a specific chemical composition of the steel and chemical composition, size, and numerical density of inclusions, piano wire rod or high carbon steel wire rod having a structure of mainly pearlite, having an average value of the proeutectoid cementite area ratio of 5% or less in a center region of less than 20% of the wire rod diameter from the center of the wire rod, having a micromartensite size of the C section of 100 μm or less, having a tensile strength of the 170 kgf/mm2 class or more, and having a drawing ratio at break of 30% or more is obtained.
摘要:
The present invention provides an image forming apparatus including: an electrophotographic photoreceptor; a charging unit; an electrostatic latent image forming unit that forms an electrostatic latent image; a developing unit that develops the electrostatic latent image formed at the electrophotographic photoreceptor by a developer to form a toner image, the developing unit storing the developer containing a toner having toner particles containing a crystalline resin and having a shape factor SF1 of from 100 to 150, a volume average particle diameter of from 3 to 6 μm, and fluorocarbon-based resin particles as an external additive; a transfer unit; and a cleaning unit that cleans the surface of the electrophotographic photoreceptor with a blade containing urethane rubber, the blade disposed applying a pressure to the electrophotographic photoreceptor surface of 0.20 mN/mm or more.
摘要:
To provide an electrophotographic photoreceptor including the outermost surface layer formed from a cured film of a composition containing a compound having a chain polymerizable functional group and a charge transportable skeleton in a molecule and a chain transfer agent having a sulfur atom in a molecule, in which the reaction rate of the compound having a chain polymerizable functional group and a charge transportable skeleton in a molecule is about 90% to about 100% and the charge mobility of the cured film at an electric field intensity of 1.0×105 v/cm is from about 5.0×10−7 cm2/Vs to about 1.0×10−4 cm2/Vs.
摘要翻译:为了提供一种电子照相感光体,其包括由分子中含有具有链可聚合官能团和电荷输送性骨架的化合物和分子中具有硫原子的链转移剂的组合物的固化膜形成的最表面层,其中, 分子中具有链可聚合官能团和电荷输送性骨架的化合物的反应速率为约90%〜约100%,电场强度为1.0×105v / cm的固化膜的电荷迁移率为 约5.0×10 -7 cm 2 / Vs至约1.0×10 -4 cm 2 / Vs。
摘要:
Provided is a thiol group-containing charge transporting material represented by the following general formula (1): F-[(G)a1-(X)a2—Y—SH]b (1) wherein F represents an organic group derived from a charge transporting compound, G represents a divalent organic group having 1 to 5 carbon atoms, X represents a group selected from a —CO—O— group, an —O—CO— group, and an —O— group, Y represents a divalent organic group having 1 to 5 carbon atoms, a1 and a2 each independently represent 0 or 1, and b represents an integer of 1 or more and 6 or less.
摘要:
[Problem] To efficiently obtain an α-olefin polymer having a high melting point and a high molecular weight. [Solution to Problem] The process for preparing an olefin polymer of the present invention is a process for preparing an olefin polymer, comprising polymerizing at least one monomer selected from α-olefins of 2 or more carbon atoms, wherein the polymerization is carried out at a temperature of not lower than 40° C. in the presence of a catalyst comprising a transition metal compound component (A) which comprises two or more kinds of transition metal compounds (a) represented by the following formula [A1] and an organometallic compound component (B) which comprises an organometallic compound (b), propylene is contained in the monomer, and the olefin polymer is an olefin polymer whose weight-average molecular weight (Mw) and number-average molecular weight (Mn), as determined by gel permeation chromatography (GPC), satisfy the relationship of 1≦(Mw/Mn)≦3, and which has a melting point (Tm), as determined by DSC, of not lower than 150° C. and an intrinsic viscosity ([η]) of not less than 1.5 dl/g.
摘要:
Provided are a thin client-server system, a thin client terminal, a data management method, and a computer readable recording medium capable of preventing data leakage when the thin client terminal is lost.A thin client-server system comprising a server provided with a database storing user data, and a thin client terminal acquiring the user data from the server, connected through a network, wherein the thin client terminal is provided with communication processing means to transmit and receive data; storage means to execute a user data acquisition request to the server through the communication processing means, and store the user data acquired from the server in a volatile memory; and control means to judge whether or not a predetermined time has passed after the reference to the user data stored in the volatile memory has been completed, and delete the data stored in the volatile memory when the time has passed.
摘要:
An image forming apparatus includes: an electrophotographic photoreceptor including a conductive support and a photosensitive layer including an outermost surface layer capable of transporting a charge, the layer being farthest from the conductive support and containing a resin having a crosslinking structure; a charging unit that charges the electrophotographic photoreceptor; a first exposure unit that exposes the electrophotographic photoreceptor to form an electrostatic latent image on the electrophotographic photoreceptor charged; a developing unit that develop the electrostatic latent image with a toner to form a toner image; a transfer unit that transfer the toner image from the electrophotographic photoreceptor to a medium to be transferred; and a second exposure unit that uniformly expose the electrophotographic photoreceptor, the outermost surface layer absorbing exposure light of the second exposure unit and having a maximum absorbance of about 0.05 or less in the entire wavelength range of the exposure light.
摘要:
An image forming apparatus includes: an electrophotographic photoreceptor including a conductive support and a photosensitive layer including an outermost surface layer capable of transporting a charge, the layer being farthest from the conductive support and containing a resin having a crosslinking structure; a charging unit that charges the electrophotographic photoreceptor; a first exposure unit that exposes the electrophotographic photoreceptor to form an electrostatic latent image on the electrophotographic photoreceptor charged; a developing unit that develop the electrostatic latent image with a toner to form a toner image; a transfer unit that transfer the toner image from the electrophotographic photoreceptor to a medium to be transferred; and a second exposure unit that uniformly expose the electrophotographic photoreceptor, the outermost surface layer absorbing exposure light of the second exposure unit and having a maximum absorbance of about 0.05 or less in the entire wavelength range of the exposure light.