This austenitic casting material contains 0.1 to 3.5 mass% C, 0.01 to 4.5 mass% Si, 0.01 to 4.5 mass% Mn, 10.0 to 50.0 mass% Ni, 0.001 to1.0 mass% N, 0 to10.0 mass% Co, and 0.0001 to 0.050 mass% Mg, the balance being Fe and unavoidable elements.
An iron alloy material for casting includes 0.3 to 3.5 mass% of C, 0.1 to 3.0 mass% of Si, 26.0 to 42.0 mass% of Ni, 0.02 to 0.50 mass% of Sb, and a balance that is Fe and an inevitable impurity/impurities.
The present invention provides a method for producing an iron casting by performing a heat treatment on an object to be heat treated, the object being obtained by casting an austenitic casting material. The heat treatment comprises: a first retention step in which the object to be heat treated is retained at a first retention temperature of 850°C to 1250°C; and a first cooling step in which the object to be heat treated is cooled to a first cooling end temperature of -150°C to 150°C after the first retention step. The first retention step includes retention of the object to be heat treated for a first retention time of 0.25 hour to 100 hours.
Aluminium alloy ingots; semi-finished articles of unrefined
aluminium; aluminium ingots; castings, foils, powder, and
rolled, drawn or extruded semi-finished articles of
aluminium or its alloys; nonferrous metals and their alloys;
cast iron; special steels; ordinary steels; iron and steel. Grinding machines for metalworking; milling machines for
metalworking; numerically controlled grinding machines;
numerically controlled milling machines; machining centers;
die-sinker electric discharge machines; wire electric
discharge machines; laser machines for metalworking;
industrial robots for conveying workpieces and tools; robots
for cargo handling; industrial robots; metalworking machines
and tools; electric discharge machines; robots for
conveyance.
An iron alloy material for casting according to the present invention contains 0.3-3.5 mass% C, 0.1-3.0 mass% Si, 26.0-42.0 mass% Ni, and 0.02-0.50 mass% Sb, with the remainder being Fe and unavoidable elements. The iron alloy material for casting according to the present invention further contains 0.001-6.0 mass% Co, and/or further contains 0.01-1.4 mass% Mn, and/or further contains 0.01-0.1 mass% Mg.
Aluminium alloy ingots; semi-finished articles of unrefined aluminium; aluminium ingots; castings, foils, powder, and rolled, drawn or extruded semi-finished articles of aluminium or its alloys; nonferrous metals and their alloys; cast iron; special steels; ordinary steels, namely, carbon steel; iron and steel Grinding machines for metalworking; milling machines for metalworking; numerically controlled grinding machines for metalworking; numerically controlled milling machines for metalworking; machining centers; die-sinker electric discharge machines; wire electric discharge machines; laser machines for metalworking; industrial robots for conveying workpieces and tools for metalworking machines and tools; robots for cargo handling machines; industrial robots; metalworking machines and machine tools; loading-unloading machines and apparatus; loading and unloading machines, namely, industrial robots for conveyance
A split wedge body (6), which has a curved inner surface (6a), is formed to become gradually thicker from a distal end toward a terminal end, and is made to cover the outer peripheral surface of a CFRP cable (1), whereby the outer peripheral surface of the CFRP cable (1) is enclosed over a prescribed length. A gap (G) extending in a longitudinal direction is ensured between end surfaces (30L, 30R), which face each other when a plurality of the split wedge bodies (6) are arranged on the outer peripheral surface of the CFRP cable (1). The gap (G) has an inclined portion that runs along a trough part (1b) of the CFRP cable (1) enclosed by the split wedge bodies (6).
F16G 11/04 - Moyens pour attacher les câbles ou les cordes l'un à l'autre ou à d'autres objetsChapeaux ou manchons à fixer sur les câbles ou les cordes avec action de serrage, p. ex. par pinces de friction du type bague et virole
D07B 9/00 - Terminaison des extrémités par agglutination ou opération analogue, p. ex. pour prévenir leur effilage
NIPPON STEEL & SUMIKIN METAL PRODUCTS CO., LTD. (Japon)
HINODE,LTD. (Japon)
Inventeur(s)
Uno, Nobuyoshi
Inoue, Kazuo
Shinmura, Hiroyuki
Sato, Yugo
Okada, Tadayoshi
Abrégé
[Problem] To provide a column and beam connection structure that has excellent stress transmission performance during earthquakes and that allows mounting to columns without welding to external diaphragms, and a column and beam connection method. [Solution] A column and beam connection method to join a steel H-beam 3 to a steel pipe column 5 using an external diaphragm 1, wherein a beam plate 22 on a split diaphragm 2, which is a section of the external diaphragm 1 that is split into a plurality of sections, is mounted to a flange 31, 33 on the steel H-beam 3 and a column plate 23 provided on an end of the beam plate 22 is caused to abut the steel pipe column 5. By disposing the joining face between split diaphragms 2 near a corner 5a of the steel pipe column 5, each column face of the steel pipe column 5 abuts only the column plate 23 on one split diaphragm 2. The split diaphragms are anchored by tightening bolts 25 and nuts 26 so that the contact pressure acts from the column plate 23 to the column face of the steel pipe column 5.
An inner peripheral portion of a receiving frame and an outer peripheral portion of a lid body each include first and second surface parts. In the closed-lid state, the first surface part of the lid body is supported by the first surface part of the frame, each of which include a gentle gradient. The second surface parts of the lid body and the receiving frame are pressed against each other by a force caused by elastic deformation of at least one of the outer peripheral portion of the lid body and the inner peripheral portion of the receiving frame. The second surface part of the receiving frame includes a steeper gradient than the first surface part of the receiving frame by reducing its diameter toward a downward direction of the receiving frame.
NIPPON STEEL & SUMIKIN METAL PRODUCTS CO., LTD. (Japon)
HINODE, LTD. (Japon)
Inventeur(s)
Uno Nobuyoshi
Saeki Eiichiro
Abrégé
In this structure for joining a column and a beam, an H-shaped steel beam is joined to a column by an outer diaphragm. The outer diaphragm comprises a divided diaphragm that is divided into a plurality of pieces. The divided diaphragm comprises a column plate that is brought into contact with the column. A piece of the divided diaphragm among the plurality of pieces of said divided diaphragm that is arranged at a position that corresponds to the H-shaped steel beam is spliced to a flange of the H-shaped beam and comprises a beam plate that has the column plate provided to an end section thereof. The individual pieces of the divided diaphragm are fastened and fixed to one another via a joining member so that contact pressure from the column plate acts on the column surface of the column.
The present application provides a column-beam connecting member and a column-beam connecting method that can be adapted to various forms of column and beam connection due to combinations of connecting members, while improving the connection between a rectangular steel tube column and an H-shaped steel beam and forgoing welding on the rectangular steel tube column. A column-beam connecting member is provided with a base part formed into an L shape in a top view by two side plates extending along two column surfaces that form a corner of a rectangular steel tube column, and a protruding part protruding toward the rectangular steel tube column from both surfaces or either one surface of the two side plates, wherein the base part is secured to the rectangular steel tube column by linking with other connecting members arranged on the other corners of the rectangular steel tube column, and the protruding part, together with the protruding parts of the connecting members that of the other connecting members are secured to the adjacent corners, forms a fastening part for fastening a flange of an H-shaped steel beam.
A slab (14, 48, 54, 57, 60, 62) is supported on the upper surface of a main beam (4) which extends in the bridge-axis direction of an overpass (1), wherein a deck plate (18) and reinforcement ribs (20) formed on the bottom surface (18b) of the deck plate are provided. The deck plate and the reinforcement ribs are integrally formed by casting.
The inner periphery (31) of a receiving frame (30) has a receiving frame support (40) that has a flat receiving shape and a receiving frame first face (42) that is formed on the lower part of the receiving frame support and that is sloped so that the diameter decreases toward the bottom of the receiving frame. The outer periphery (11) of a cover (10) has a flat cover receiving section (16) that is supported by the receiving frame support, and a cover first face (18) that is formed on the lower part of the cover flat receiving section and that is vertical toward the bottom of the cover or is sloped steeper than the receiving frame first face so that the diameter decreases toward the bottom of the cover. When the cover is in a closed cover state, the cover flat receiving section (16) is supported by the receiving frame support (40), and the cover first face (18) and the receiving frame first face (42) are mutually pressed together by a pressing force due to the elastic deformation of the outer periphery (11) of the cover (10) and/or the inner periphery (31) of the receiving frame (30).
An inner peripheral portion (31) of a receiving frame (30) has a receiving frame first surface section (40) with a gentle slope, and a receiving frame second surface section (42) formed below the receiving frame first surface section while decreasing the diameter thereof toward the lower portion of the receiving frame with a steeper slope than the receiving frame first surface section, an outer peripheral portion (11) of a lid body (10) has a lid first surface section (16) with a gentle slope, and a lid second surface section (18) formed below the lid first surface section vertically toward the lower portion of the lid body or while decreasing the diameter thereof toward the lower portion of the lid body with a steeper slope than the receiving frame second surface section, and in a state where the lid body is closed, the lid first surface section (16) is supported by the receiving frame first surface section (40), and the lid second surface section (18) and the receiving frame second surface section (42) are pressed against each other by pressing force due to elastic deformation of the outer peripheral portion (11) of the lid body (10) and/or the inner peripheral portion (31) of the receiving frame (30).
