摘要:
A honeycomb support structure of an electrically-heated catalyst apparatus is disclosed, in which a support member of retainers for preventing an electrically-heated catalyst moving backward is coupled to an outer cylinder while causing the support member to follow the thermal deformation of the outer cylinder thereby to suppress the deformation of the support member due to the thermal stress. A metal foil laminate having a corrugated foil and a tabular foil superposed one on the other is spirally wound to form a cylindrical honeycomb unit, which is accommodated in a metal outer cylinder and is heated by being supplied with power. The honeycomb unit support structure includes a plurality of ceramic bars and at least a support member having a plurality of recesses for holding the ceramic bars at such a position as to traverse the end surface of the honeycomb unit downstream of the exhaust gas flow and in such a manner as to follow the deformation of the outer cylinder. The structure of the support member that can follow the deformation can be realized by preparing a cylindrical metal plate and forming at least a gap in the cylindrical metal plate. Consequently, the honeycomb unit is prevented from telescoping, a uniform temperature distribution in the support member is assured, and the durability of the support member is improved.
摘要:
This invention provides a blow molding process for manufacturing multilayer hollow articles having sections different from one another in respect to the kind of resins, number of layers, and thickness of layers along the circumference in the horizontal section of an article with the narrowest of the sections in any one of the resin layers extending in a specified width along the longitudinal wall of an article and being capable of satisfying the sectional performance requirements, an apparatus, and said hollow articles. It also provides a process for manufacturing multilayer hollow articles with the wall thickness ratio of resin layers in each section varying along the longitudinal wall of an article or those with the sectional width in each resin layer varying along the longitudinal wall of an article, an apparatus, and said hollow articles. Hollow articles molded by the process and apparatus of this invention are particularly useful for automotive bumpers, the seats and backs of chairs, and boiler-room doors.
摘要:
An apparatus for scribing grain-oriented electrical steel strip has a movable die attached to a reciprocating drive and an opposite fixed die. A strip held between the two dies is scribed by the action of the movable die that is moved back and forth by the reciprocating drive. The fixed die positioned with the stroke of the movable die is supported by a plurality of cylinders connected to an accumulator whose pressure is preset to a level of the deformation resistance corresponding to the amount of deflection that varies with the depth of the impressions scribed on the strip.
摘要:
This invention related to a sub-merged arc welding method which comprises applying one-side or each-side one pass welding of a steel high notch toughness using a high basicity fusion-type flux containing more than 10% of CaF2 and having a basicity (0.108 CaO (%) + 0.068 MnO (%) + 0.10 MgO (%) / 0.105 SiO2 (%) +0.002 Al2O3 (%))of 1.2 to 1.8 in combination with a welding wire comprising not more than 0.10% of carbon, not more than 0.50% of silicon, 0.8 to 2.4% of manganese, not more than 0.80% of molybdenum, 0.30 to 0.60% of titanium, less than 0.0020% of boron, with the balance being iron and unavoidable impurities to produce a weld metal with very high notch ductility.
摘要:
A method for forming on an electrical steel sheet an electric insulating film having excellent punching property and heat resistance comprising coating on the steel sheet a treating solution comprising a composition composed of one or more of chromic anhydride, chromate, bichromate and 1 - 35 parts (as solid) of styrene resin containing not less than 50% stylene and/or vinyl acetate resin emulsion per 10 parts of chromium ion in the composition and heating the coating at a temperature between 150* and 500*C.
摘要:
A high-carbon steel suitable for super high tensile strength steel wire having excellent ductility and heat treating ability, comprising 0.75-1.0% of carbon, not more than 0.5% of silicon, 0.1 to 1.0% of manganese, 0.5 to 5.0% of chromium, one or more of 1 to 4% of cobalt, 0.01 to 0.2% of niobium, 0.001 to 0.05% of titanium, 0.01 to 0.3% of vanadium and not more than 0.1% of aluminum with the balance being iron and unavoidable impurities.
摘要:
A method for producing steel materials suitable for large heatinput welding which comprises heating a steel ingot or slab containing 0.03 to 0.18% C, 0.1 to 1.0% Si, 0.5 to 1.8% Mn, not more than 0.1% total Al, 0.004 to 0.03% Ti, 0.001 to 0.009% total N, with the balance being Fe and unavoidable impurities to a temperature between 1250* and 1400*C so as to dissolve into solid solution not less than 0.004% TiN, and then reprecipitating the dissolved TiN into fine TiN.
摘要:
A corrosion inhibiting composition which comprises an aqueous medium having dissolved therein an effective amount of at least one of water-soluble 1-hydroxybenzotriazole compounds and watersoluble salts thereof, said water-soluble 1-hydroxybenzotriazole compound having the formula of
WHEREIN X and Y are respectively one member of the group consisting of hydrogen atom, a lower alkyl group having 1 to 3 carbon atoms, nitro group, halogen atom, sulfo group, methoxy group, carboxy group and cyano group.
摘要:
There is described a method for controlling the profile of a workpiece on a rolling mill, wherein the workpiece is imparted with a predetermined profile in the roughing stage which is suitable for further control in the following finishing stage. In the finishing stage, the desired profile of the workpiece is attained by adjustment of one or a combination of factors including modifying the rolling loads of the respective roller stands preceding the last stand, cooling of the rolls, and changing the rolling pitch. The final shape control of the workpiece is carried out on the last stand. The adjustment of the rolling load is performed by simulating the desired workpiece profile by means of an even ordered function whose constants represent the load determining factors and by adjusting such constants in accordance with the desired changes in the load conditions.