摘要:
An apparatus and a method of surface-treating a half sliding bearing, the method comprising the steps of: preparing a tank which accommodates a surface-treatment solution and an anode of an alloy to be applied to the bearings as a surface treatment; successively and one by one introducing the bearings into the surface-treatment solution; performing the surface treatment in such a manner that the surface layer of the alloy is applied to the surface of the bearings by feeding an electricity between a cathode served by the bearing and the anode via the surface-treatment solution while moving, in the surface-treatment solution, the bearings being introduced into the surface-treatment solution in a state in which the bearings is brought into contact with one another; and successively and one by one drawing out the bearings, which have been applied with the surface treatment, from the tank.
摘要:
A multilayer aluminum-based alloy plain bearing having superior compatibility and superior fatigue resistance, comprising a steel back metal, an aluminum alloy intermediate bonding layer bonded to the steel back metal, and an Al--Sn--Si family bearing alloy layer bonded to the intermediate bonding layer, the aluminum bearing alloy layer consisting, by weight, of 7 to 15% Sn, 0.5 to 3% Si, and the balance Al and incidental impurities, the hardness of the aluminum bearing alloy layer being less than 50 Vickers hardness, the aluminum alloy intermediate bonding layer consisting, by weight, of at least one kind selected from the group consisting of 0 to 1.7% Mn, 0 to 1.2% Cu and 0 to 1.8% Mg, and the balance Al and incidental impurities, Vickers hardness of the aluminum alloy intermediate bonding layer being in a range of not less than 60% of the Vickers hardness of the aluminum bearing alloy layer but not more than 120% of the Vickers hardness of the aluminum bearing alloy layer.
摘要:
A ceramics circuit board is manufactured by preliminarily preparing a circuit pattern base composed of a plurality of circuit pattern elements connected by bridging pieces each having a thickness smaller than that of the circuit pattern element, preferably less than half thickness of the circuit pattern base, applying and bonding the circuit pattern base onto one surface of a ceramics board base and removing the bridging pieces by effecting an etching treatment to thereby form a circuit pattern having a predetermined shape on the one surface of the ceramics board base. The circuit pattern base and the bridging pieces are formed of one metallic plate by partially effecting etching treatment. The bridging pieces are arranged so as to have a gap between a rear surface thereof and the one surface of the ceramics board base when the circuit pattern base is applied on the one surface of the ceramics board base. The bonding step may be carried out by forming, on a surface to be bonded, an eutectic material composed of the same metallic material as that composing the circuit pattern base and oxygen. It is preferred that the method further includes the step of applying and bonding a copper plate to another surface of the ceramics board base before the etching treatment.
摘要:
An aluminum-based bearing alloy of the invention comprises 3-40% Sn, 0.1-10% Pb, 0.1-5% Cu, 0.1-3% Sb, total 0.05-1% of Ti and B which satisfy the equation: B/Ti+B=0.1 to 0.35, and the balance being essentially Al. The aluminum-based bearing alloy according to the present invention has excellent fatigue resistance and anti-seizure property.
摘要翻译:本发明的铝基轴承合金包含3-40%的Sn,0.1-10%的Pb,0.1-5%的Cu,0.1-3%的Sb,总共0.05-1%的Ti和B,满足以下等式:B / Ti + B = 0.1〜0.35,余量基本为Al。 根据本发明的铝基轴承合金具有优异的耐疲劳性和抗咬合性。
摘要:
An aluminum alloy bearing for use in a low-rigidity housing, includes a bearing aluminum alloy, and a steel back metal bonded to the bearing aluminum alloy. The steel back metal contains 0.16 to 0.35 wt. % of carbon, and the steel back metal has a hardness of Hv 200 to 280 and has an elastic limit of not less than 40 kgf/mm.sup.2. For producing the aluminum alloy bearing, the back metal material is pressure-bonded to the bearing aluminum alloy in such a manner that the rolling reduction of the back metal material is 38 to 50%.
摘要:
Disclosed is a joined ceramic-metal composite having a copper sheet directly joined to a ceramic substrate and a method for the production thereof. This composite is characterized by having a plurality of parallel grooves formed on the surface of the copper sheet to be joined to the ceramic substrate. The products of this invention show substantially none of the defects such as blisters inflicated on the copper sheet during the course of union by heating and, therefore, serve advantageously as ceramic circuit substrates for use in transistor modules, for example.
摘要:
A method and apparatus for obtaining packages for dying by twisting and winding processed yarns by a double twister. Between a double twisting spindle and a take-up roller disposed above, there are arranged a winding angle-adjusting device, a feed roller and a traverse device, recited from the side of the spindle. The high yarn tension on the side of the double twister is reduced by using the feed roller having a special structure to obtain a soft wound package.
摘要:
A nitrogen-containing heterocyclic compound or pharmaceutically acceptable salt thereof represented by the general formula: which have a potent antibacterial activity and a high safety. Thus, the compounds are useful as antibacterial agents against gram-positive bacteria, gram-negative bacteria and drug resistant bacteria.
摘要:
A coated granular material of the present invention includes: a water-soluble granular substance; a coating layer applied to at least a surface of the water-soluble granular substance and containing a thermosetting resin A formed from a resin liquid having a molar ratio A of isocyanate groups to hydroxyl groups of 0.5 to 0.99; and a protection layer applied to the coating layer and containing a thermosetting resin B formed from a resin liquid having a molar ratio B of isocyanate groups to hydroxyl groups of 0.75 to 2.0, wherein the molar ratio B of the protection layer is greater than the molar ratio A of the coating layer. The present coated granular material is capable of achieving both of a short-term release pattern and an initial release limiting function and maintaining good quality.
摘要:
Disclosed is a compound represented by the general formula: wherein R1 represents an aryl or heterocyclic group which may be substituted or the like; X1 represents a C2-C4 alkylene group or the like; X2, X3 and X5 independently represent NH, a bond or the like; X4 represents a lower alkylene group, a bond or the like; Y1 represents a bivalent alicyclic hydrocarbon residue which may be substituted or a bivalent alicyclic amine residue which may be substituted; and Z1, Z2, Z3, Z4, Z5 and Z6 independently represent a nitrogen atom, a group represented by the formula: CH, or the like, provided that at least one of Z3, Z4, Z5 and Z6 represents a nitrogen atom, or a salt thereof, which is useful as an antibacterial agent.