An airfoil surface includes a first titanium portion, a second titanium portion, an aluminum alloy braze disposed there between, and a titanium coating covering the aluminum alloy braze, at least part of the first titanium portion and at least part of the second titanium portion.

The invention relates to an insert brazed on a body of cutting tools (101), consisting of: a metal substrate (11), in the form of plates, having a surface for attachment to the tool body; a high-temperature, brazing, alloy layer (12); an intermediate layer; and a ceramic plate (14). The brazing alloy layer connects the metal substrate (11) of the ceramic plate (14) via the metal layer (13). A low-temperature brazing layer (1) connects the insert (1, 1) to the body of the tool (101).

Heat exchangers and methods of producing thereof having fins with slots formed therethrough, and a continuous tube having parallel tube runs connected by reverse bends to define a serpentine coil that traverses back and forth through the slots formed in the fins. Each fin has surface enhancements and is metallurgically joined to corresponding portions of the tube at the slots with brazed joints therebetween.

To provide a flux recovery device which can remove a flux in a pipe and a method for removing a flux. A flux recovery device 200 according to the present invention recovers a flux from a gaseous mixture containing a flux component, the flux recovery device 200 including: a separation unit 400 configured to separate the flux from the gaseous mixture using water, and to discharge the water containing the flux; a pipe 500 including a second connection port 540, an inclined portion 580, and a first connection port 520, the water containing the flux flowing into the pipe 500 from the second connection port 540, the inclined portion 580 being positioned on a downstream side of the second connection port 540, and extending in a direction intersecting with a vertical line extending in a gravity direction, and the first connection port 520 being positioned on an upstream side of the inclined portion 580; and a pump 220 configured to supply water from the first connection port 520.

To provide a flux recovery device which can remove a flux in a pipe and a method for removing a flux. A flux recovery device 200 according to the present invention recovers a flux from a gaseous mixture containing a flux component, the flux recovery device 200 including: a separation unit 400 configured to separate the flux from the gaseous mixture using water, and to discharge the water containing the flux; a pipe 500 including a second connection port 540, an inclined portion 580, and a first connection port 520, the water containing the flux flowing into the pipe 500 from the second connection port 540, the inclined portion 580 being positioned on a downstream side of the second connection port 540, and extending in a direction intersecting with a vertical line extending in a gravity direction, and the first connection port 520 being positioned on an upstream side of the inclined portion 580; and a pump 220 configured to supply water from the first connection port 520.

A solder joint in which an electronic component with a back metal is bonded to a substrate by a solder alloy. The solder alloy includes: a solder alloy layer having an alloy composition consisting of, in mass %: Ag: 2 to 4%, Cu: 0.6 to 2%, Sb: 9.0 to 12%, Ni: 0.005 to 1%, optionally Co: 0.2% or less and Fe: 0.1% or less, with the balance being Sn; an SnSb intermetallic compound phase; a back metal-side intermetallic compound layer formed at an interface between the back metal and the solder alloy; and a substrate-side intermetallic compound layer formed at an interface between the substrate and the solder alloy. The solder alloy layer exists at least one of between the SnSb intermetallic compound phase and the back metal-side intermetallic compound layer, and between the SnSb intermetallic compound phase and the substrate-side intermetallic compound layer.

The present invention relates to a method for manufacturing a battery stack cooling plate for an electric vehicle, the method comprising: a plastic working step for plastic working each of an upper plate and a lower plate which are made of a clad material and constitute a cooling plate; a preheating step for preheating each of the upper plate and the lower plate; a coating step for coating a flux on the upper plate and the lower plate; and a brazing step for heating the upper plate and the lower plate in a state where the clad materials of the upper plate and the lower plate are in contact with each other, so as to bond the upper plate and the lower plate together.

A brazing material outer coat and a method for preparing the same, an in-situ synthetic metal-coated flux-cored silver brazing material and a method for preparing the same, a welding method and a joint body, wherein the in-situ synthetic metal-coated flux-cored silver brazing material comprises a flux core and a brazing material outer coat wrapping the flux core, the brazing material outer coat comprises, in percentage by weight: silver Ag 20.036.0%, copper Cu 35.045.0%, zinc Zn 27.037.0%, tin Sn 1.03.0%, phosphorus P 0.1%0.5%, nickel Ni 0.52.0%, germanium Ge 0.10.3%, and lithium Li 0.10.3%, the flux core comprises, in percentage by weight: elemental boron micropowder 5.010.0%, sodium borohydride 5.010.0%, potassium fluoroborate 15.030.0%, boric anhydride 25.040.0%, sodium fluoride 10.030.0%, sodium bifluoride 2.04.0%, and copper sulfate 1.05.0%. The in-situ synthetic metal-coated flux-cored silver brazing material in the present disclosure realizes self-reaction in a brazing process to coat a layer of copper film on a surface of a brazed metal, the core of the brazing material has good wettability, good flowability, self-brazing function, and zinc being hard to volatilize, the flux coat has high activity, low hygroscopicity, few carbon residues, good plasticity and toughness, etc. The present disclosure is particularly suitable for brazing pipeline components of stainless steel, manganese brass and so on.

A bonded brazing ring secured to an end of a tube having a solvent or a solvent with a binder applied to the surface of the tube, and a method of adhering a brazing ring to a tube using a solvent or a solvent with a binder is provided. The brazing ring is secured to the tube prior to a brazing operation.

A brazing sheet is provided for use in brazing performed in an inert gas atmosphere both using flux and without using flux. The brazing sheet includes an aluminum-based core, an intermediate material layered on the core and being composed of an aluminum alloy that contains Mg: 0.40-3.0 mass %, and a filler metal layered on the intermediate material and being composed of an aluminum alloy that contains Si: 6.0-13.0 mass % and Mg: less than 0.050 mass %. The brazing sheet satisfies the formula below where M [mass %] is the Mg content in the intermediate material, ti [m] is the thickness of the intermediate material, and tf [m] is the thickness of the filler metal:
tf10.15ln(Mti)+3.7.