Provided are a catalyzer and a catalytic device with which the catalyzer main body can be protected and can be retained easily. The catalyzer is equipped with: a retaining member (32) formed in a tubular or annular shape by braiding and compressing a wire material; a catalyzer main body (31), which is fitted into the inner circumferential part of the retaining member (32) and supports a metal catalyst, and has a wire-knit structure formed with a prescribed outer shape by braiding fibrous materials or wire materials one by one into net-like shapes, and then winding these nets; and a net member (34), which is arranged on the end surfaces of the retaining member (32) and is for preventing the catalyzer main body (31) from falling out from the retaining member (32), and has a mesh size sufficiently large that the flow of exhaust gas flowing into the catalyzer main body (31) is not obstructed.
A heat insulator is provided which can ensure satisfactory rigidity without increasing plate thickness. A number of convex portions are formed in an aluminum flat plate by embossing in an aligned state so that the flat plate part does not remain linearly between the convex portions. Each one convex portion has a hexagonal shape as viewed planarly, and the longitudinal section thereof, which includes vertices formed by opposing corners of the hexagonal shape, has a circular arc shape. The optimal value of convex height/convex width is a value in an experiment example, i.e., about 16.3% which is a value just before the start of blunting of the percentage performance improvement. From the viewpoint of a satisfactory percentage performance improvement, however, the convex height/convex width value is suitably not less than 12% and not more than 20.0%.
Disclosed is a plate-shaped body which can further be improved in rigidity while a margin of molding is kept in preparation for press molding to be performed thereafter. A large number of convex parts (12) are formed in such an array wherein flat plate parts (13) never remain linearly among the convex parts (12), while the respective convex parts (12) are formed regularly at regular intervals. Each of the convex parts (12) has a shape circular in planar view and circular-arc in longitudinal section, the shape configuring a part of a sphere. Six convex parts (12B) formed radially every 60º, centering around each non-linked convex part (12A) among the convex parts (12), are interlinked via respective cross-linking parts (14) so as to divide the remaining flat plate parts (13) at the nearest site. Accordingly, while between the convex part (12A) and the convex parts (12B) radially arranged centering around the convex part (12A), the flat plate parts (13) are arrayed continuously so as not to remain linearly, the convex parts (12B) are interlinked via the cross-linking parts (14), dividing the flat plate parts (13).
Proposed is a method of press-forming an embossed steel sheet which enables sufficient quenching of the embossed steel sheet. In the method, an embossed steel sheet (10) having a projected portion is press-formed by means of an upper die (3) and a die counter (4). After both dies are pressed together, a first water pump supplies water that circulates within the upper die (3) through coolant passage 5A → passage 7A → cavity S→ passage 7B → passage 5B → passage 5C → passage 7C → cavity S → passage 7D → passage 5D → passage 5E → passage 7E → cavity S → passage 7F → passage 5F → passage 5A, while a second water pump supplies water that circulates within the die counter (4) through coolant passage 6A → passage 8A → cavity S → passage 8B → passage 6B → passage 6C → passage 8C → cavity S → passage 8D → passage 6D → passage 6E → passage 8E → cavity S → passage 8F → passage 6F → passage 6A.
This invention provides a plate-like body which can ensure satisfactory rigidity without increasing plate thickness. A number of convexes (2) are formed in an aluminum flat plate by embossing in an aligned state so that the flat plate part does not remain linearly between the convexes (2). The convexes (2) have a regular hexagonal shape as viewed planarly, and the longitudinal section, which passes through an apex which makes an opposing corner, is circular. The optimal value of convex height (H)/convex width (W1) is a value in an experiment example, i.e., about 16.3% which is a value just before the start of blunting of the percentage performance improvement. From the viewpoint of a satisfactory percentage performance improvement, however, the convex height (H)/convex width (W1) value is suitably not less than 12% and not more than 20.0%.
Disclosed is a composite material with excellent heat insulation, vibration resistance, vibration inhibition, and sound insulation and the like. Two aluminum plates (1A, 1B) are set in a press die and formed to have many protrusions (2A, 2B) arranged so that flat plane parts do not remain in between the protrusions (2A, 2B) in a straight line. The plates are formed in a uniform pattern, wherein: the protrusions (2A) are regular-hexagonal in a planar view, and the longitudinal sections passing through the points forming opposing corners are circular arcs in shape; and the protrusions (2B) are cylindrical in shape and formed in the centers of flat plane parts (2C). A heat insulator (1) is formed as a stack of the upper plate (1A) and the lower plate (1B), that have different thicknesses; and the protrusions (2B) are formed by bonding the upper plate (1A) with the lower plate (1B) in a protruding state. For example, the plates (1A, 1B) are pushed into cylindrical depressions by a circular punch so the depressions become the die units, and further pressure is applied so the lower plate (1B) protrudes to the upper plate (1A), thereby forming an interlock.
B32B 3/30 - Produits stratifiés comprenant une couche ayant des discontinuités ou des rugosités externes ou internes, ou une couche de forme non planeProduits stratifiés comprenant une couche ayant des particularités au niveau de sa forme caractérisés par une couche continue dont le périmètre de la section droite a une allure particulièreProduits stratifiés comprenant une couche ayant des discontinuités ou des rugosités externes ou internes, ou une couche de forme non planeProduits stratifiés comprenant une couche ayant des particularités au niveau de sa forme caractérisés par une couche comportant des cavités ou des vides internes caractérisés par une couche comportant des retraits ou des saillies, p. ex. des gorges, des nervures
B21D 22/02 - Estampage utilisant des dispositifs ou outils rigides
B21D 39/03 - Utilisation de procédés permettant d'assembler des objets ou des parties d'objets, p. ex. revêtement par des tôles, autrement que par placageDispositifs de mandrinage des tubes des tôles autrement que par pliage
B21D 53/84 - Fabrication d'autres objets particuliers d'autres parties de moteurs, p. ex. bielles de liaison
B60K 13/04 - Dispositions des ensembles de propulsion relatives à l'admission d'air de combustion ou à l'échappement des gaz relatives à l'échappement
F01N 13/14 - Silencieux ou dispositifs d'échappement caractérisés par les aspects de structure comportant une isolation thermique
F01N 3/24 - Silencieux ou dispositifs d'échappement comportant des moyens pour purifier, rendre inoffensifs ou traiter les gaz d'échappement pour rendre les gaz d'échappement inoffensifs par conversion thermique ou catalytique des composants nocifs des gaz d'échappement caractérisés par les aspects de structure de l'appareillage de conversion
F16L 59/02 - Forme ou configuration de matériaux isolants, avec ou sans revêtement formant un tout avec les matériaux isolants
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