Abstract: Laser 3D printer having a compartment, which has a longitudinal axis substantially vertical with respect to a supporting plane, and is delimited by a side wall extending around the longitudinal axis; and a platform, which is engaged in a sliding manner in the compartment; a feeding assembly to feed a powder material onto the platform; and a laser printing head to sinter the powder material disposed on the platform itself; the printer having a chamber configured to collect, in use, the non-sintered powder material falling from the platform; wherein the printer has a pneumatic recirculation system configured to pneumatically transport the powdered material from the chamber to the feeding assembly.

Abstract: Disclosed are: a microetching agent which can form roughened shapes less affected by differences in the crystallinity of the copper and with which roughened shape excellent in terms of adhesiveness to resins, etc. can be formed on either electrolytic copper or rolled copper; and a method for producing a wiring board which includes a step of roughening a copper surface using the microetching agent. In the present invention, the microetching agent for copper is an acidic aqueous solution containing an inorganic acid, a cupric ion source, a halide ion source, and a polymer. The polymer has a functional group containing a nitrogen atom. It is preferable that the microetching agent contain a sulfate ion source.

Abstract: A method of manufacturing a coil spring and a coil spring manufacturing apparatus are provided that enable precise forming of a coil spring even when various kinds of wire rods are used as a wire rod. This is based on the premise that the wire material being fed out is serially pressed against a rotating roller outer circumferential surface to form the wire rod into a coil shape. Under this premise, as the wire rod is fed out, a rotating roller is rotationally driven by a rotary drive force of a servomotor such that a portion pressed against the wire rod on the rotating roller outer circumferential surface moves toward the advancing side of the wire rod.

Abstract: The coating film-forming composition includes an aromatic compound having an amino group and an aromatic ring in one molecule, and thio compound (sulfur oxoacids having a pKa of ?1.9 or less and salts thereof are excluded). pH of the coating film-forming composition is 4 to 10. The thio compound is preferably one that ionized to form anions in a solution, and thiosulfate and thiocyanate are especially preferable. By bringing the coating film-forming composition into contact with the surface of a metal member, a coating film is formed on the surface of the metal member, so that a surface-treated metal member can be obtained.

Abstract: A laser 3D printer presents a tubular compartment; a lifting platform slidably engaged in the tubular compartment; a dispenser for feeding a given amount of powdered material onto the lifting platform; a distributor for distributing the powdered material over the lifting platform; and a laser printing head for sintering the powdered material laid on the lifting platform; the distributor having the shape of a hopper converging downwards and being configured for receiving the powdered material from the dispenser.

Abstract: A casting device in which refrigerant is pressure-fed to a cooling passage formed in a die, leakage of refrigerant in the die can be reliably detected in a short time without a significant modification applied to the conventional device. A casting device includes a pressure-feed device that pressure-feeds refrigerant to a cooling passage formed in a die, and a release agent coating applicator that applies a release agent to the die, and further includes a unit that mixes a fluorescent agent into the refrigerant (fluorescent agent tank), a unit that irradiates the die surface of the die with black light while the refrigerant containing the fluorescent agent mixed therein is pressure-fed to the die, and an imaging device that captures an image of the die surface. The imaging device is integrally assembled with the release agent coating applicator.

Abstract: An object is to provide, for example, a method for manufacturing a film-forming substrate that can sufficiently improve both bleeding of a resin composition and adhesion between the resin composition and a metal substrate surface. For example, provided is a method for manufacturing a film-forming substrate having a film of a resin composition formed on a metal substrate surface, the method including: an etching step of etching a metal substrate surface with a micro-etching agent; a surface treatment step of bringing the etched metal substrate surface into contact with a surface treatment agent to perform a surface treatment such that a contact angle of water on the surface is 50° or more and 150° or less; and a film forming step of forming a film of a resin composition on the surface-treated metal substrate surface by an inkjet method.

Abstract: The coating film-forming composition is a solution of pH 4 to 10 and includes an aromatic compound having an amino group and an aromatic ring in one molecule, a polybasic acid having two or more carboxy groups, and an oxidizing agent. As the oxidizing agent, hypochlorous acid, chlorous acid, chloric acid, perchloric acid, persulfuric acid, percarbonic acid, hydrogen peroxide, organic peroxides, or the like is used. The aromatic compound preferably contains a nitrogen-containing aromatic ring, and more preferably contains a primary amino group or a secondary amino group. The coating film-forming composition is used for, for example, forming a coating film on surface of a metal member.

Abstract: A magazine for a firearm comprises a magazine tube, a removable floor plate assembly attached to the lower end of the magazine tube, a follower and a spring. The floor plate assembly is removable from the lower end of the magazine tube by sliding from the front portion towards the rear portion. The floor plate assembly comprises an L-shaped plate and a removable bottom, equipped with a body compartment suitable to house the primary portion of the L-shaped plate. The L-shaped plate and the floor plate are snap-engageable to attach the floor plate assembly to the magazine tube.

Abstract: A laser 3D printer presents a tubular compartment; a lifting platform engaged in a sliding manner in the tubular compartment; a feeding unit for feeding a powdered material onto the lifting platform; a laser printing head for sintering the powdered material laid on the lifting platform; and a collection chamber, which extends about at least part of the tubular compartment and is connected to the tubular compartment via at least one opening made through a side wall of the tubular compartment itself.

Abstract: The present invention relates to a sawing machine which comprises a single motorized conveyor belt, consisting of a conveyor plane for transporting the material to be cut and a driving wall placed substantially at 90° with respect to said conveyor plane so that all together contribute to give the single conveyor belt a substantially “L”-shape. In this way, the problem to synchronize the movement of two or more belts moving forward simultaneously is avoided, also reducing maintenance times and costs, and at the same time obtaining a higher feed speed.

Abstract: A microetching agent is an acidic aqueous solution containing an organic acid, cupric ions, and halide ions. The molar concentration of halide ion of the microetching agent is 0.005 to 0.1 mol/L. By bringing the microetching agent into contact with a copper surface, the copper surface is roughened. An average etching amount in the depth direction during roughening is preferably 0.4 ?m or less. The microetching agent can impart on copper surfaces a roughened shape having excellent adhesiveness to resins and the like, even with a low etching amount.

Abstract: An oil-based release agent of the present invention contains a petroleum-based hydrocarbon solvent (a) and a high temperature adhesive (b), is applied to a metal die used for die casting or casting, has high adhesion and high lubricity even with respect to a metal die at a high temperature particularly of 300° C. or higher, and can prevent seizure. In addition, the present invention provides a method for applying the oil-based release agent of the present invention by controlling an adhesion amount thereof by micronization and speed-control thereof with respect to a metal die at a high temperature, and an electrostatic application method.

Abstract: The coating film-forming composition includes an aromatic compound having an amino group and an aromatic ring in one molecule, and thio compound (sulfur oxoacids having a pKa of ?1.9 or less and salts thereof are excluded). pH of the coating film-forming composition is 4 to 10. The thio compound is preferably one that ionized to form anions in a solution, and thiosulfate and thiocyanate are especially preferable. By bringing the coating film-forming composition into contact with the surface of a metal member, a coating film is formed on the surface of the metal member, so that a surface-treated metal member can be obtained.

Abstract: Disclosed are: a microetching agent which can form roughened shapes less affected by differences in the crystallinity of the copper and with which roughened shape excellent in terms of adhesiveness to resins, etc. can be formed on either electrolytic copper or rolled copper; and a method for producing a wiring board which includes a step of roughening a copper surface using the microetching agent. In the present invention, the microetching agent for copper is an acidic aqueous solution containing an inorganic acid, a cupric ion source, a halide ion source, and a polymer. The polymer has a functional group containing a nitrogen atom. It is preferable that the microetching agent contain a sulfate ion source.

Abstract: A laser 3D printer presents a tubular compartment; a lifting platform engaged in a sliding manner in the tubular compartment; a dispenser for feeding a given amount of powdered material onto the lifting platform; a distributor for distributing the powdered material over the lifting platform; and a laser printing head for sintering the powdered material laid on the lifting platform; the dispenser being defined by two pipes, which are coaxial, are mobile with respect to one another about a rotation axis, and have respective openings configured for facing each other radially so as to define an outlet for the powdered material from the dispenser itself.

Abstract: Provided is a method for producing a heat sink that can easily and effectively form a heat radiating film on the surface of a substrate without requiring enormous heat energy for increasing the temperature of the substrate. The method is a method for producing a heat sink having a substrate and a heat radiating film formed on the surface of the substrate, including a first step of casting a substrate by injecting molten metal into a cavity of molding dies; and a second step of applying a heat radiating coating to the substrate through spraying or dropping in the period from when the molding dies are opened after the casting until when the temperature of the substrate that has been cast becomes lower than the deposition temperature that is a temperature necessary to deposit the heat radiating coating on the substrate.