Abstract: Provided are: a semi-solidified slurry production method capable of obtaining a semi-solidified slurry having small variation of the solid phase ratio at each part, a molded body production method capable of reducing the variation of the size of crystal grains, and a molded body. The semi-solidified slurry production method comprises: a preparation step of placing a molten metal into a bottomed container; and a stirring step of stirring the molten metal by performing reciprocating movement of a rod placed in the molten metal in a length direction of the rod until a solid phase ratio at any portion of the molten metal in the container reaches 80% or more.

Abstract: A manufacturing method for joined bodies that allows galvanic corrosion to be reduced is provided. The method is for manufacturing a joined body obtained by joining together a mating member made of ferrous metal and a non-ferrous metal material. The method includes: a press fit step of press-fitting a joining element made of ferrous metal into a predetermined surface of the non-ferrous metal material; and a welding step of forming a melted portion between an exposed portion of the joining element press-fitted into the non-ferrous metal material and the mating member. After the press fit step, a part of the joining element is exposed from the predetermined surface and the remaining part of the joining element is not exposed and is buried in the non-ferrous metal material. The remaining part of the joining element includes a lodging portion having a surface facing to the predetermined surface.

Abstract: A mold degassing device which can reduce the likelihood of particulates entering between a valve stem and an insertion hole is provided. The mold degassing device (10, 40, 50) includes an inflow passage (11, 41, 51), a discharge passage (12), a communication passage (13), a valve device (30) for opening and closing the communication passage (13), a gas-flow adjusting part to adjust a gas flow. A wall surface forming the communication passage (13) is provided with an insertion hole (32d) through which a valve stem (31) of the valve device (30) is inserted. The gas-flow adjusting part is positioned closer to the inflow passage (11, 41, 51) than the insertion hole (32d) and, when gas is discharged, generates a gas flow directed rotationally about an axis (C).

Abstract: Provided is an aluminum alloy diecast that can be unlikely to crack at a part to be press-fitted while the proof stress of a main body part is being secured, and can eliminate the need for heat treatment to the main body part at the time of production. The aluminum alloy diecast (11) includes a part to be press-fitted (13) into which a joining member (20) is press-fitted and a main body part (14) in which the part to be press-fitted (13) is integrally formed, in which an average hardness of the part to be press-fitted (13) is lower than an average hardness of the main body part (14) or an average roundness of crystals other than a primary crystal of Al in the part to be press-fitted (13) is larger than an average roundness of crystals other than a primary crystal of Al in the main body part (14).

Abstract: A method for manufacturing a joined body includes at least one first plate material, one second plate material, and a self-piercing rivet where a cylinder portion projects from a head. The method includes: a test step of plastically deforming the second plate material by a load in a plate thickness direction to measure physical value information of the second plate material; a setting step of setting a joining condition based on the physical value information by the test step; and a joining step of supporting a back surface of the second plate material having a front surface on which the first plate material is stacked with a die and driving the cylinder portion from the front surface side toward a concave portion provided in the die to join the first plate material and the second plate material together based on the joining condition set by the setting step.

Abstract: A manufacturing method for joined bodies that allows galvanic corrosion to be reduced is provided. The method is for manufacturing a joined body obtained by joining together a mating member made of ferrous metal and a non-ferrous metal material. The method includes: a press fit step of press-fitting a joining element made of ferrous metal into a predetermined surface of the non-ferrous metal material; and a welding step of forming a melted portion between an exposed portion of the joining element press-fitted into the non-ferrous metal material and the mating member. After the press fit step, a part of the joining element is exposed from the predetermined surface and the remaining part of the joining element is not exposed and is buried in the non-ferrous metal material. The remaining part of the joining element includes a lodging portion having a surface facing to the predetermined surface.

Abstract: A casting device for operating stably while suppressing leakage from a gap between a tip and a sleeve is disclosed. The casting device includes: a sliding member in the center of which a rod slides, and in which a gap is formed between the rod and the sleeve; a seal member arranged at an outer periphery of the sliding member; and a suction device for suctioning air inside the sleeve. When the seal member is positioned in a center section closer to a cavity than a pouring hole, and the air in a space between the sliding member and the tip is suctioned, the seal member assumes a first state in which the seal member adheres to the center section, and in the first state, the tip advances toward the cavity.

Abstract: Provided is a casting device that is able to operate stably while suppressing leakage from a gap between a tip and a sleeve. The casting device comprises: a sliding member in the center of which a rod slides, and in which a gap is formed between the rod and a sleeve; a seal member arranged at the outer periphery of the sliding member; and a suction device for suctioning air inside the sleeve. When the seal member is positioned in a center section closer to a cavity than the pouring hole, and the air in a space between the sliding member and the tip is suctioned, the seal member assumes a first state in which the seal member adheres to the center section, and in the first state the tip advanced toward the cavity.

Abstract: Provided is a milling cutter including: a tool body to rotate about an axis; and cutting edges at an outer peripheral part of a front end of the tool body, wherein the cutting edges include a flat face machining cutting edge extending along a virtual plane perpendicular to the axis, and a recessed groove machining cutting edge projecting further toward a front end side in the axial direction than the flat face machining cutting edge, and the recessed groove machining cutting edge has a first inclined portion extending toward the front end side in the axial direction toward an outside in a radial direction, a second inclined portion arranged outside the first inclined portion in the radial direction and extending toward a base end side in the axial direction toward the outside in the radial direction, and a tip portion connecting the first and second inclined portions.

Abstract: A method for manufacturing a joined body includes at least one first plate material, one second plate material, and a self-piercing rivet where a cylinder portion projects from a head. The method includes: a test step of plastically deforming the second plate material by a load in a plate thickness direction to measure physical value information of the second plate material; a setting step of setting a joining condition based on the physical value information by the test step; and a joining step of supporting a back surface of the second plate material having a front surface on which the first plate material is stacked with a die and driving the cylinder portion from the front surface side toward a concave portion provided in the die to join the first, plate material and the second plate material together based on the joining condition set by the setting step.

Abstract: Provided is a milling cutter including: a tool body to rotate about an axis; and cutting edges at an outer peripheral part of a front end of the tool body, wherein the cutting edges include a flat face machining cutting edge extending along a virtual plane perpendicular to the axis, and a recessed groove machining cutting edge projecting further toward a front end side in the axial direction than the flat face machining cutting edge, and the recessed groove machining cutting edge has a first inclined portion extending toward the front end side in the axial direction toward an outside in a radial direction, a second inclined portion arranged outside the first inclined portion in the radial direction and extending toward a base end side in the axial direction toward the outside in the radial direction, and a tip portion connecting the first and second inclined portions.

Abstract: An Al—Mg—Si-based aluminum alloy includes 0.015 to 0.12 mass % of Sr, the aluminum alloy producing a cast metal structure in which Mg2Si is crystallized in a fine agglomerate form.

Abstract: A clamp includes (a) a first engager that engages with engagement parts formed at ends of the tiebars at the moving platen side after moving the moving platen in the fixed platen direction to close a die or mold, in the tiebar insertion holes of the moving platen, (b) a second engager that engages with engagement parts formed at ends of the tiebars at the fixed platen sides detachably at ends of clamping pistons using a detachable engager, (c) a pushing device that cooperates with the tiebars and pushes the moving platen after die or mold closing against the fixed platen in the tiebar insertion holes of the fixed platen, and (d) a tiebar inserting and extracting device coupled with ends of the tiebars at the fixed platen sides at a side of the fixed platen opposite to the die or mold mounting surface.

Abstract: A welding method of carrying out an alternating current arc welding by switching polarities of a voltage applied between a wire and workpieces when weld-connecting the workpieces to each other by use of the wire, the workpieces including an aluminum cast material and an aluminum wrought material. In the welding method, the alternating current arc welding is carried out in a way to satisfy |B|/(A+|B|)?0.128 where A denotes an integrated value of an electric current over a time for which the polarity of the wire is positive, and B denotes an integrated value of an electric current over a time for which the polarity of the wire is negative; and thereby an amount of heat input into the aluminum cast material during the welding is set at not more than 67.8 J/mm2.

Abstract: An upper member of a pillar has a substantially U-shaped cross section, and includes first side walls extending substantially in a transverse direction of the vehicle at least at a lower portion, and a connecting plate at a lower end while keeping the U-shaped cross section. A lower member includes a mounting plate opposed to the connecting plate at a lower portion being lower than an upper end, and second side walls extending substantially in the transverse direction at both end portions of the mounting plate in a longitudinal direction of the vehicle. The connecting plate and the mounting plate are welded to each other in a state that they are in abutment with each other, and the first side walls and the second side walls are joined to each other, and the upper member and the lower member are integrally fixed to each other.

Abstract: A clamp includes (a) a first engager that engages with engagement parts formed at ends of the tiebars at the moving platen side after moving the moving platen in the fixed platen direction to close a die or mold, in the tiebar insertion holes of the moving platen, (b) a second engager that engages with engagement parts formed at ends of the tiebars at the fixed platen sides detachably at ends of clamping pistons using a detachable engager, (c) a pushing device that cooperates with the tiebars and pushes the moving platen after die or mold closing against the fixed platen in the tiebar insertion holes of the fixed platen, and (d) a tiebar inserting and extracting device coupled with ends of the tiebars at the fixed platen sides at a side of the fixed platen opposite to the die or mold mounting surface.

Abstract: An intermediate material is formed by coating at least a half of the surface of a function selecting material having at least one of physical property values that are different from those of a casting metal material forming a cast product with a coating metal material and the casting metal material is cast together with the intermediate material to form a composite body in casting the product.

Abstract: The device includes a cavity defined by a fixed die and a movable die; a plunger disposed in a runner connected to the cavity in such a manner as to be movable to and from a gate of the cavity; a molten metal inlet formed midway in the runner; wherein molten metal supplied from the molten metal inlet in the cavity is pressurized by the advance of the plunger. This die device further includes an auxiliary die unit having a runner and a molten metal inlet connected to the cavity, which is disposed in a border of the fixed die; wherein excessive solidified metal is produced in the vicinity of the molten metal inlet of the auxiliary die unit.

Abstract: A liquid feeding pump includes two coaxial cylinder chambers, a piston mounted in each chamber, and a piston rod connecting the pistons. A head side of one cylinder chamber functions as a liquid chamber, a rod side functions as a first air chamber, a rod-side of the other cylinder chamber functions as a second air chamber, and a head side functions as a third air chamber. The liquid chamber is formed with liquid inlets or outlets. Each of the air chambers is formed with air inlets or outlets, a part of the supplying pipes connected to the liquid inlet or outlet of the liquid chamber is wound around an outer periphery of the other cylinder chamber, or a peripheral wall of the other cylinder chamber is formed with a liquid cooling chamber and supplying pipes communicated with and connected to the liquid inlets or outlets of the liquid chamber are connected to the liquid cooling chamber.

Abstract: A mowing cutter unit for a mower including a rotary cutter and a stationary cutter coaxially overlapped to each other, the rotary cutter is formed in an approximately polygonal shape in plan view and is formed with recessed cutting portions each being curved in an approximately doglegged shape toward the rotational direction at each vortex portion thereof; and the stationary cutter is formed with projecting cutting portions slidably contacted with respective recessed cutting portions of the rotary cutter on the peripheral edge in such a manner that it is shaped in a loosely circular arc from the cutting base to the cutting leading edge and a crossing angle at which the projecting cutting portion is rubbed with a grass pushing-out portion of the recessed cutting portion is larger than a crossing angle at which it is rubbed with a grass taking-in portion of the recessed cutting portion.