Patent application number | Description | Published |
20090165901 | ALUMINUM ALLOY CLAD SHEET FOR A HEAT EXCHANGER AND ITS PRODUCTION METHOD - Disclosed herein is an aluminum alloy clad sheet for a heat exchanger including a core layer, a sacrificial layer formed on one surface of the core layer, and a filler layer including an Al—Si based alloy formed on the other surface of the core layer. The core layer includes a predetermined amount of Si, Cu, Mn, Ti, and Mg, the remainder including Al and inevitable impurities, and the sacrificial layer includes a predetermined amount of Si, Mn, and Zn, the remainder including Al and inevitable impurities. The core layer has a crystal grain size after the brazing heat treatment at 595° C. for 3 minutes of at least 50 μm and less than 300 μm. The filler layer and the sacrificial layer are defined for their thickness, and the number of intermetallic compounds in the core layer is also defined to a predetermined range. By such constitution, the aluminum alloy clad sheet has improved fatigue life and post-braze strength, high corrosion resistance, and excellent erosion resistance and brazeability. | 07-02-2009 |
20120003035 | FILLET WELD JOINT AND METHOD FOR GAS SHIELDED ARC WELDING - A fillet weld joint of steel having high fatigue strength by improving stress concentration without excessively relying on imparting a compressive residual stress to a toe part by welding materials, free of cracking, and excellent in the toughness, and a method for gas shielded arc welding for obtaining the fillet weld joint are provided. In the fillet weld joint, a martensitic transformation starting temperature (Ms point) of a weld metal is 400° C. or above and 550° C. or below, a value obtained by dividing a toe radius ρ of a toe part of welding by a sheet thickness t of a base metal (ρ/t) is 0.25 or above, an expression below | 01-05-2012 |
20120121931 | STEEL MATERIAL FOR DISSIMILAR METAL JOINING, JOINED BODY OF DISSIMILAR METALS AND PROCESS FOR JOINING DISSIMILAR METAL MATERIALS - A joined body of dissimilar metals which is produced by joining a steel material and an aluminum alloy material, wherein the steel material to be joined has a specific composition and is specified in the compositions of outer surface oxide layer and inner oxide layer and the aluminum alloy material to be joined is an Al—Mg-base or Al—Zn—Mg-base aluminum alloy having a specific composition. In the joined body of dissimilar metals, a content of Fe at a joint interface on the aluminum alloy material side is regulated, and a reaction layer of Fe and Al is formed at the joint interface of the joined body of dissimilar metals. The joined body of dissimilar metals exhibits high joint strength. | 05-17-2012 |
20130017406 | AUTOMOBILE COMPONENTAANM Kinefuchi; MasaoAACI Kobe-shiAACO JPAAGP Kinefuchi; Masao Kobe-shi JPAANM Nakagawa; TomokazuAACI Kobe-shiAACO JPAAGP Nakagawa; Tomokazu Kobe-shi JPAANM Tachibana; MieAACI Kakogawa-shiAACO JPAAGP Tachibana; Mie Kakogawa-shi JP - An automobile component to which an eccentric compressive load is applied becomes lighter without deteriorating performance. Density ρ, sheet thickness t, Young's modulus E, and yield stress σy of a material composing an inner panel | 01-17-2013 |
20130168366 | DISSIMILAR METAL JOINING METHOD - In the present invention, when spot welding a cold rolled steel sheet and an aluminum alloy sheet, pre-electrification is performed ahead of time in conditions wherein the sheet thickness (ta) of the aluminum alloy sheet and the sheet thickness (ts) of the cold rolled steel sheet that are to be joined are in specific ranges, dust is not generated between the steel sheet and an electrode, and the aluminum alloy sheet side is not caused to melt, and afterwards, main spot welding is performed. The welding conditions of the main spot welding and the pre-electrification further satisfy a relational expression that is determined by each electrification condition and each sheet thickness. | 07-04-2013 |
20130181463 | Bumper Beam - A bumper beam having increased bending strength achieved with a minimum increase in the weight of the bumper beam. The bumper beam ( | 07-18-2013 |
20130244051 | ALUMINUM-ALLOY CLAD SHEET - There are provided an aluminum-alloy clad sheet and a clad sheet subjected to heating equivalent to brazing, which each have a high strength and an excellent erosion resistance and thus allow a reduction in thickness of a clad sheet subjected to heating equivalent to brazing such as an aluminum alloy radiator tube, and/or of a clad sheet such as an aluminum-alloy brazing sheet. An aluminum-alloy clad sheet or a clad sheet subjected to heating equivalent to brazing includes at least a core aluminum alloy sheet and an aluminum-alloy sacrificial anti-corrosive material cladded with each other, and is to be formed into a heat exchanger by brazing. The core aluminum alloy sheet includes a specified 3000 series composition. Furthermore, the strength and the erosion resistance of the core aluminum alloy sheet are improved through control of grain size distribution of precipitates having a size in a specified level in the core aluminum alloy sheet, or control of the average number density and the composition of dispersed particles therein. | 09-19-2013 |
20130341306 | METHOD FOR BONDING DISSIMILAR METALS TO EACH OTHER - In the bonding of an aluminum alloy material ( | 12-26-2013 |
20140161659 | HIGH-STRENGTH HOT-ROLLED STEEL SHEET - This high-strength hot-rolled steel plate contains specific amounts of C, Si, Mn, Al, V and also Ti and/or Nb so as to fulfill C−12(V/51+Ti/48+Nb/93)>0.03, and the rest consists of iron and unavoidable impurities. Ferrite is the main microstructure, the remaining microstructure is one or more selected from the group consisting of bainite, martensite and retained austenite, wherein the average particle diameter of precipitated carbides (the total content of V, Ti and Nb is 0.02% or greater) in the ferrite is less than 6 nm. | 06-12-2014 |