An extruded material characterized by containing 8.0-14.0% by mass of Zn, 2.0-4.0% by mass of Mg, 0.5-2.0% by mass of Cu, 0.2-1.5% by mass of Mn, and 0.05-0.3% by mass of Zr, the remainder being Al and unavoidable impurities, and in that the average value of the circle equivalent diameter of an intermetallic compound therein measured using SEM is 3.0 µm or less, and the area ratio of an intermetallic compound having a circle equivalent diameter of 3.0 µm or greater is 4.0% or less.
C22C 21/10 - Alliages à base d'aluminium avec le zinc comme second constituant majeur
C22F 1/00 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid
C22F 1/053 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid de l'aluminium ou de ses alliages d'alliages avec le zinc comme second constituant majeur
A machine component characterized by comprising an aluminium alloy containing 8.0-14.0 mass% of Zn, 2.0-4.0 mass% of Mg, 0.5-2.0 mass% of Cu, 0.2-1.5 mass% of Mn and 0.05-0.3 mass% of Zr, with the remainder being Al and unavoidable impurities, wherein the mean particle diameter of the fine particles within the crystal grains measured by small-angle X-ray scattering is 2-7 nm, the normalized dispersion of the particle size distribution is no more than 45%, the tensile strength is 800 MPa or higher, and the total elongation is 5% or more.
C22C 21/10 - Alliages à base d'aluminium avec le zinc comme second constituant majeur
C22F 1/053 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid de l'aluminium ou de ses alliages d'alliages avec le zinc comme second constituant majeur
3.
MACHINE COMPONENT, METHOD FOR PRODUCING SAME, AND EXTRUDED MATERIAL
Provided is a machine component which has a 7000 series aluminum alloy extruded structure that contains, in terms of mass%, 8.0-14.0% of Zn, 2.0-4.0% of Mg, 0.5-2.0% of Cu, 0.2-1.5% of Mn and 0.05-0.3% of Zr, with the remainder comprising Al and unavoidable impurities, and which is characterized in that the structure and characteristics as determined by measuring a surface parallel to the extrusion direction at an intermediate position between a surface and the central axis of the machine component using a SEM-EBSD method are such that the average proportion of small angle grain boundaries having angles of 5-15° is 5% or more, the average proportion of large angle grain boundaries having angles of greater than 15° is 20% or more, the average KAM value is 0.3° or more, the tensile strength is 800 MPa or more and the total elongation is 5% or more. Also provided is a method for producing the machine component, and an extruded material able to produce the machine component.
C22C 21/10 - Alliages à base d'aluminium avec le zinc comme second constituant majeur
C22F 1/053 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid de l'aluminium ou de ses alliages d'alliages avec le zinc comme second constituant majeur
B21C 23/08 - Fabrication de fils, de barres, de tubes
4.
ALLOY MATERIAL, CONTACT PROBE, AND CONNECTION TERMINAL
This alloy material has a composition of 20-30wt% of silver (Ag), 35-55 wt% vanadium (Pd), and 20-40wt% copper (Cu) in a compositional range for a ternary alloy of Ag, Pd, and Cu, uses said composition as a base, and has added to said base 0.5-2.5 wt% tin (Sn), 0.1-1.0 wt% of one out of cobalt (Co), chromium (Cr), and zinc (Zn) or all three, and 0.01-0.1 wt% of iridium (Ir) or ruthenium (Ru) or both.
C22C 5/04 - Alliages à base d'un métal du groupe du platine
C22C 30/02 - Alliages contenant moins de 50% en poids de chaque constituant contenant du cuivre
C22F 1/14 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid des métaux nobles ou de leurs alliages
H01B 1/02 - Conducteurs ou corps conducteurs caractérisés par les matériaux conducteurs utilisésEmploi de matériaux spécifiés comme conducteurs composés principalement de métaux ou d'alliages
H01R 13/03 - Contacts caractérisés par le matériau, p. ex. matériaux de plaquage ou de revêtement
C22F 1/00 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid
5.
ALLOY MATERIAL, CONTACT PROBE, AND CONNECTION TERMINAL
This alloy material has copper (Cu) as the main component thereof and has added thereto 10-30 wt% silver (Ag) and 0.5-10 wt% nickel (Ni). As a result, an alloy material having no coating and having excellent Sn-corrosion resistance, a contact probe comprising this alloy material, and a connection terminal can be provided.
Provided is a hollow seamless steel pipe for spring which contains, by mass%, C: 0.2-0.7%, Si: 0.5-3%, Mn: 0.1-2%, Cr: over 0% but not greater than 3 %, Al: over 0 % but not greater than 0.1%, P: over 0% but not greater than 0.02%, S: over 0% but not greater than 0.02%, and N: over 0% but not greater than 0.02%, and the remainder which comprises iron and unavoidable impurities, wherein the uneven thickness rate calculated using formula (1) is equal to or less than 7.0%. Uneven thickness rate = (maximum thickness-minimum thickness)/(average thickness)/2×100 (1)
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/38 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
C22C 38/58 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et plus de 1,5% en poids de manganèse
F16F 1/02 - Ressorts en acier ou faits d'un autre matériau ayant une faible friction intérieureRessorts enroulés, de torsion, à lame, en forme de coupelles, à corps annulaire ou similaire, le matériau de ressort ne jouant pas de rôle
C21D 8/10 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de corps tubulaires
There are provided: a seamless steel pipe formed from a cylindrical steel material billet through a hot isostatic extrusion step, wherein a depth of a contiguous flaw formed on an inner periphery surface and an outer periphery surface of the steel pipe is 50 μm or less; a hollow spring obtained by forming a hollow body in a shape of a coil or a bar or a bar with curved part from the seamless steel pipe made of spring steel and applying a surface treatment to the hollow body so that the hollow body has compressive residual stress; and a method for producing seamless steel pipe including: a billet molding step; a first heating step; a hot isostatic extrusion step; a second heating step; an extension step; a third heating step; and a pickling step.
B21B 47/00 - Agencements, dispositifs ou méthodes auxiliaires, associés au laminage des feuilles de métal multicouches
B21B 19/04 - Laminage de matériaux de structure pleine, c.-à-d. non évidéePerçage
B21B 1/42 - Méthodes de laminage ou laminoirs pour la fabrication des produits semi-finis de section pleine ou de profilésSéquence des opérations dans les trains de laminoirsInstallation d'une usine de laminage, p. ex. groupement de cagesSuccession des passes ou des alternances de passes pour laminage progressif intermittent ou par train planétaire
B21C 23/00 - Extrusion des métauxExtrusion par percussion
B21C 23/08 - Fabrication de fils, de barres, de tubes
B21F 3/02 - Enroulement des fils métalliques selon des formes particulières en hélice
C21D 9/08 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour corps tubulaires ou tuyaux
C22C 38/04 - Alliages ferreux, p. ex. aciers alliés contenant du manganèse
C22C 38/34 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de silicium
C22C 38/46 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du vanadium
Provided are an alloy material having excellent electrical conductivity and high hardness and excellent workability for use in a contact probe, a contact probe consisting of this alloy material, and a connection terminal. In a compositional range of a ternary alloy of silver (Ag), palladium (Pd) and copper (Cu), Ag accounts for 17-25 at%, Pd accounts for 30-45 at% and Cu accounts for 30-53 at%, at least one of manganese (Mn), tin (Sn), silicon (Si), antimony (Sb), titanium (Ti) and magnesium (Mg) is added at a quantity of 4.5 at% or lower relative to this basic composition, and further, 0.5-3.5 at% of Mn, 1-2 at% of Sn, 0.5-2 at% of Si, 0.5-3 at% of Sb, 0.5-2 at% of Ti and 0.5-3.5 at% of Mg are added relative to this basic composition.
C22C 30/02 - Alliages contenant moins de 50% en poids de chaque constituant contenant du cuivre
C22C 5/04 - Alliages à base d'un métal du groupe du platine
C22F 1/14 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid des métaux nobles ou de leurs alliages
C22F 1/16 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid des autres métaux ou de leurs alliages
A seamless steel pipe for a hollow spring, containing 0.2 to 0.7 mass% of C, 0.5 to 3 mass% of Si, 0.1 to 2 mass% of Mn, up to 3 mass% (exclusive of 0 mass%) of Cr, up to 0.1 mass% (exclusive of 0 mass%) of Al, up to 0.02 mass% (exclusive of 0 mass%) of P, up to 0.02 mass% (exclusive of 0 mass%) of S and up to 0.02 mass% (exclusive of 0 mass%) of N. The content of retained austenite in the inner surface layer of the steel pipe is 5 vol% or less. The average grain diameter of ferrite/pearlite phase in the inner surface layer of the pipe is 18μm or less. The number density of carbide particles which have equivalent circle diameters of 500nm or more and which are present in the inner surface layer of the pipe is 1.8×10-2/μm2 or less.
This hollow seamless pipe for high-strength springs comprises a steel material having a properly regulated chemical composition, wherein the inner surface part has a total decarburized depth of 100 µm or less, any flaw present in the inner surface has a depth of 40 µm or less and a width of 60 µm or less, and carbide grains having a size of 500 nm or larger in terms of equivalent-circle diameter are present in the inner surface part at a population density of 1.8×10-2 grains/µm2 or less.
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/38 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et plus de 1,5% en poids de manganèse
C22C 38/58 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et plus de 1,5% en poids de manganèse
C21D 8/10 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de corps tubulaires
C21D 9/02 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour ressorts
C21D 9/08 - Traitement thermique, p. ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliersFours à cet effet pour corps tubulaires ou tuyaux
Provided is a hollow seamless pipe for high-strength springs. In the hollow seamless pipe, the decarburization in the inner and outer peripheral surfaces is extremely reduced, so that the outer and inner peripheral surface layers can be sufficiently hardened in the quenching step in producing springs. Thus, the hollow seamless pipe ensures sufficient fatigue strength of springs. The hollow seamless pipe consists of a steel which contains 0.2 to 0.7mass% of C, 0.5 to 3mass% of Si, 0.1 to 2mass% of Mn, more than 0 to 0.1mass% of Al, more than 0 to 0.02mass % of P, more than 0 to 0.02mass% of S, and more than 0 to 0.02mass% of N. The contents of C in the inner and outer peripheral surfaces of the hollow seamless pipe are 0.10mass % or more, and the thicknesses of the total decarburized layers present respectively in the inner and outer peripheral surfaces thereof are 200μm or less.
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C21D 7/12 - Modification des propriétés physiques du fer ou de l'acier par déformation par travail à froid sur toute la section droite, p. ex. des tiges d'armature pour béton par mandrinage des corps tubulaires
C21D 8/06 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication de barres ou de fils
C22C 38/06 - Alliages ferreux, p. ex. aciers alliés contenant de l'aluminium
C22C 38/58 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et plus de 1,5% en poids de manganèse
F16F 1/02 - Ressorts en acier ou faits d'un autre matériau ayant une faible friction intérieureRessorts enroulés, de torsion, à lame, en forme de coupelles, à corps annulaire ou similaire, le matériau de ressort ne jouant pas de rôle
Provided is a multilayered tube by which a heat insulation effect and a vibration suppression effect can be obtained, and the structure of an exhaust system using the multilayered tube can be further compacted to a conventional exhaust system. A multilayered tube (1) to be connected to a vibration suppression source when being used is comprised of an inner tube (2); an outer tube (4) coaxially disposed with the inner tube (2) on the outside of the inner tube (2); and a heat insulation and vibration suppression element (3) provided between the inner tube (2) and the outer tube (4). The inner tube (2) and the outer tube (4) are composed of metal tubes having different natural frequencies, or metal tubes having different vibration modes with respect to the same natural frequency.
A highly durable seamless steel pipe; a hollow spring utilizing the seamless steel pipe; and a process for manufacturing a seamless steel pipe in which such a seamless steel pipe can be manufactured while ensuring high production efficiency, high product quality and low cost. There is provided seamless steel pipe (1) manufactured through at least the hot hydrostatic extrusion step (C) of carrying out hot hydrostatic extrusion of cylindrical steel material billet (2) so as to produce seamless steel pipe intermediate (1a), wherein the depth of each of continuous dents appearing on the inner circumferential surface and outer circumferential surface of the steel pipe as measured from the relevant surface is not greater than 50 騜m. Further, there is provided a process for manufacturing a seamless steel pipe, comprising the steps of billet forming (A), first heating (B), hot hydrostatic extrusion (C), second heating (D), extending (F)/(G), third heating (H) and pickling (I).
B21C 23/08 - Fabrication de fils, de barres, de tubes
B21B 21/00 - Laminage des tubes par mouvement à pas de pèlerin
B21C 1/22 - Étirage par des machines ou appareils dans lesquels l'effort de traction est produit par des moyens autres que des tambours, p. ex. par chariot mû longitudinalement tirant ou poussant le matériau de façon à former des tôles, des barres ou des tubes métalliques spécialement adaptés à la fabrication d'objets tubulaires
C22C 38/00 - Alliages ferreux, p. ex. aciers alliés
C22C 38/46 - Alliages ferreux, p. ex. aciers alliés contenant du chrome et du nickel et du vanadium
14.
WEAR-RESISTANT MEMBER AND POWER TRANSMISSION COMPONENT
Disclosed is a wear-resistant member comprising an Ni-P plating film which is formed on a base and excellent in wear resistance, fatigue characteristics and corrosion resistance. The Ni-P plating film is composed of an Ni alloy containing, in mass%, 85-98.9% of Ni, 1-5% of P and 0.1-1% of NH4 group, and the average crystallite size of the film according to Ni-P plating film structure analysis by x-ray diffraction is 1-5 nm. In addition, the Ni-P plating film as just plated has a hardness of not less than 500 Hv. Also disclosed is a power transmission component using such a wear-resistant member.
brevets
