摘要:
A Ti--Al system intermetallic compound comprised of 25 at. % to 75 at. % of aluminum and the remainder of titanium. The compound includes 0.004 at. % to 1.0 at. % each of at least one halogen element selected from the group consisting of fluorine, chlorine, bromine and iodine. Alternatively, to provide a Ti--Al system intermetallic compound with oxidation resistance, the surface of the Ti--Al system intermetallic compound is heated to 800.degree. C. to 1125.degree. C. in a mixture of gas including 2 ppm to 1% by volume of at least one halogen element selected from the group consisting of fluorine, chlorine, bromine and iodine, and also including 0.1% by volume or more of oxygen. Thus, a dense aluminum oxide film is formed on the surface of the intermetallic compound. Alternatively, to form the dense aluminum oxide film, at least one halogen element is first disposed on the part providing the oxidation resistance of the intermetallic compound, and heated for 0.2 hour or longer at 800.degree. C. to 1125.degree. C. In this case, the halogen amount should be between 0.002 mol/m.sup.2 and 2 mol/m.sup.2.
摘要:
A first insert member and a head member are inserted in a cylindrical metal material. A liquid pressure chamber is defined in the material by the first insert member and the head member. First and second dies are situated corresponding to the head member and the first insert member, respectively. When a pressurized liquid is fed into the liquid pressure chamber, that portion of the material situated between the first and second dies bulges outward. As the first and second dies are driven to approach each other with the bulging portion between them, a pleat with a U-shaped section is formed.
摘要:
A sheet of a 6000 type aluminum alloy containing Si and Mg as main alloy components and having an excellent formability sufficient to allow flat hemming, excellent resistance to denting, and good hardenability during baking a coating, which exhibits an anisotropy of Lankford values of more than 0.4 or the strength ratio for cube orientations of the texture thereof of 20 or more, and exhibits a minimum bend radius of 0.5 mm or less at 180° bending, even when the offset yield strength thereof exceeds 140 MPa through natural aging; and a method for producing the sheet of the aluminum alloy, which includes the steps of subjecting an ingot to a homogenization treatment, cooling to a temperature lower than 350° C. at a cooling rate of 100° C./hr or more, optionally to room temperature, heating again to a temperature of 300 to 500° C. and subjecting it to hot rolling, cold rolling the hot rolled product, and subjecting the cold rolled sheet to a solution treatment at a temperature of 400° C. or higher, followed by quenching.
摘要:
A hollow stabilizer made of a steel pipe, comprises: a torsion portion extending in a width direction of a vehicle body; a pair of right and left arm portions positioned at both end sides of the torsion portion; and a plurality of curved portions which are bent in an arc shape in any of the torsion portion, the arm portions and portions therebetween. Bending radii of the plurality of curved portions are different from each other.
摘要:
A stabilizer for vehicles has a torsion portion extending in a width direction of a vehicle, arm portions extending in a forward or backward direction from both side end portions of the torsion portion, straight portions provided in a vicinity of both side end portions of the torsion portion, the straight portions extending along with an axial direction thereof, leading end portions of the arm portions, the leading end portions of the arm portions being mounted to the vehicle, and the straight portions being mounted to the vehicle via bushes, and a stopper provided at one of the straight portions, the stopper preventing the straight portions from moving more than a predetermined distance in an axial direction with respect to the bush.
摘要:
A stabilizer for vehicles has a torsion portion extending in a width direction of a vehicle, arm portions extending in a forward or backward direction from both side end portions of the torsion portion, straight portions provided in a vicinity of both side end portions of the torsion portion, the straight portions extending along with an axial direction thereof, leading end portions of the arm portions, the leading end portions of the arm portions being mounted to the vehicle, and the straight portions being mounted to the vehicle via bushes, and a stopper provided at one of the straight portions, the stopper preventing the straight portions from moving more than a predetermined distance in an axial direction with respect to the bush.
摘要:
A sheet of a 6000 type aluminum alloy containing Si and Mg as main alloy components and having an excellent formability sufficient to allow flat hemming, excellent resistance to denting, and good hardenability during baking a coating, which exhibits an anisotropy of Lankford values of more than 0.4 or the strength ratio for cube orientations of the texture thereof of 20 or more, and exhibits a minimum bend radius of 0.5 mm or less at 180° bending, even when the offset yield strength thereof exceeds 140 MPa through natural aging; and a method for producing the sheet of the aluminum alloy, which includes the steps of subjecting an ingot to a homogenization treatment, cooling to a temperature lower than 350° C. at a cooling rate of 100° C./hr or more, optionally to room temperature, heating again to a temperature of 300 to 500° C. and subjecting it to hot rolling, cold rolling the hot rolled product, and subjecting the cold rolled sheet to a solution treatment at a temperature of 400° C. or higher, followed by quenching.
摘要:
An Al—Mg—Si—Cu aluminum alloy plate excelling in strength and formability and exhibiting improved filiform corrosion resistance which is suitably used for automotive body panels. The aluminum alloy plate contains 0.25-0.6% of Mg (mass %, hereinafter the same), 0.9-1.1% of Si, 0.6-1.0% of Cu, and at least one of 0.20% or less of Mn and 0.10% or less of Cr, with the balance consisting of Al and impurities, wherein the number of Q phases (Cu—Mg—Si—Al phases) with a size of 2 &mgr;m or more in diameter present in a matrix is 150 per mm2 or more. The aluminum alloy plate is fabricated by homogenizing an ingot of an aluminum alloy having the above composition at 530° C. or more, cooling the ingot to 450° C. or less at a cooling rate of 30° C./hour or less, hot-rolling the ingot, cold-rolling the hot-rolled product, and providing the cold-rolled product with a solution heat treatment.
摘要翻译:Al-Mg-Si-Cu铝合金板具有优异的强度和成形性,并且表现出改善的丝状耐腐蚀性,适用于汽车车身面板。 铝合金板含有0.25-0.6%的Mg(质量%,以下相同),0.9-1.1%的Si,0.6-1.0%的Cu和0.20%以下的Mn和0.10%以下的至少一种 的Cr,余量由Al和杂质构成,其中存在于基体中的直径为2μm以上的Q相(Cu-Mg-Si-Al相)的数量为150个/ mm 2以上。 铝合金板通过在530℃以上均匀化具有上述成分的铝合金锭制成,以30℃/小时以下的冷却速度将锭冷却至450℃以下, 对锭进行热轧,冷轧热轧制品,并对冷轧制品进行固溶热处理。
摘要:
A method of forming a coil spring wherein, an element wire transferred longitudinally is passed between a support roller and a first pressing roller and then between the support roller and a second pressing roller. Coil springs with desired diameters are formed by varying the relative positions of the support roller and the first and second pressing rollers to curve the element wire with desired curvatures. The coil is supported to prevent it from sagging due to gravity acting thereon.
摘要:
A sheet of a 6000 type aluminum alloy containing Si and Mg as main alloy components and having an excellent formability sufficient to allow flat hemming, excellent resistance to denting, and good hardenability during baking a coating, which exhibits an anisotropy of Lankford values of more than 0.4 or the strength ratio for cube orientations of the texture thereof of 20 or more, and exhibits a minimum bend radius of 0.5 mm or less at 180° bending, even when the offset yield strength thereof exceeds 140 MPa through natural aging; and a method for producing the sheet of the aluminum alloy, which includes the steps of subjecting an ingot to a homogenization treatment, cooling to a temperature lower than 350° C. at a cooling rate of 100° C./hr or more, optionally to room temperature, heating again to a temperature of 300 to 500° C. and subjecting it to hot rolling, cold rolling the hot rolled product, and subjecting the cold rolled sheet to a solution treatment at a temperature of 400° C. or higher, followed by quenching.