C22F1/002

CLOSURE DEVICE WITH FIXED JAW HOOK

A device includes a capsule extending longitudinally from a proximal end to a distal end and including a channel extending therethrough. The capsule is releasably coupled to a proximal portion of the device. Device also includes a first arm rigidly fixed to the distal end of the capsule to extend distally therefrom. In addition, Device includes a second arm, a proximal end of which is slidably received within the capsule so that the second arm is movable between an open configuration, in which the second arm is moved laterally away from the first arm and a distal end of the second arm is moved distally past the distal end of the first arm, and a closed configuration, in which the second arm is moved toward the first arm and the distal end of the second arm is moved proximally toward the distal end of the first arm.

HIGH-STRENGTH AND HIGH-CORROSION-RESISTANT TERNARY MAGNESIUM ALLOY AND PREPARATION METHOD THEREOF

The present invention relates to a high-strength, high-corrosion resistance ternary magnesium alloy and a preparation method therefor, the magnesium alloy comprising the following element components by mass percentage: 8-12 wt % of Y, 0.6-3 wt % of Al and the remainder being Mg. The method comprises: (1) under a protective atmosphere, preparing a Mg—Y intermediate alloy, an aluminum ingot and a magnesium ingot into a magnesium alloy melt; (2) under a protective atmosphere, allowing the magnesium alloy melt to stand after stirring, then carrying out refining, degassing, and slag removal, allowing the magnesium alloy melt to stand again, then thermally insulating to obtain a magnesium alloy liquid; and (3) casting and molding the magnesium alloy liquid under a protective atmosphere, and forming a cast ingot; the three steps above ultimately obtain a high-strength, high-corrosion resistance ternary magnesium alloy.

PROCESSING TECHNOLOGY FOR INHIBITING WELD COARSE GRAINS OF MAGNESIUM ALLOY PROFILES

Disclosed is a processing technology for inhibiting weld coarse grains of magnesium alloy profiles, including the following steps: preparation of a magnesium alloy ingot, homogenization, scalping, extrusion, pre-stretching at room temperature, solution treatment, quenching, stretching correction, artificial aging, etc. The processing technology can effectively control the production of weld coarse grains in extrusion and heat treatment processes of magnesium alloy profiles, and all property indexes of final products are higher than standard requirements.

PROCESS OF MANUFACTURING ALUMINUM ALLOY WORKPIECE
20230160048 · 2023-05-25 ·

A process of manufacturing an aluminum alloy workpiece includes a preparation step, in which an aluminum alloy sheet, a forming die, and a handling device are prepared; an aging and forming step including a heating substep for heating the aluminum alloy sheet to a first temperature, a transferring substep for transferring the aluminum alloy sheet to the die at a second temperature, and a forming and cooling substep for forming the aluminum alloy sheet into a target shape; and an aging out of forming die step, in which the formed aluminum alloy sheet is removed from the die, is heated to a third temperature, and undergoes another aging treatment to manufacture the aluminum alloy workpiece.

Nickel-based brazing foil and process for brazing

A process for producing an amorphous ductile brazing foil is provided. According to one example embodiment, the method includes providing a molten mass, and rapidly solidifying the molten mass on a moving cooling surface with a cooling speed of more than approximately 10.sup.5° C./sec to produce an amorphous ductile brazing foil. A process for joining two or more parts is also provided. The process includes inserting a brazing foil between two or more parts to be joined, wherein the parts to be joined have a higher melting temperature than that the brazing foil to form a solder joint and the brazing foil comprises an amorphous, ductile Ni-based brazing foil; heating the solder joint to a temperature above the liquidus temperature of the brazing foil to form a heated solder joint; and cooling the heated solder joint, thereby forming a brazed joint between the parts to be joined.

F* and W temper aluminum alloy products and methods of making the same

Disclosed herein are aluminum alloy products and methods of making the aluminum alloy products. Specifically, disclosed herein is an aluminum alloy provided in a temper achieved by rapidly quenching the aluminum alloy product after hot rolling. The aluminum alloys provided in the tempers described herein allow an end user to further process the aluminum alloys using less time and requiring less energy.

Interim temper process

A method for forming a structure using an interim temper process is provided. A metal material is partially-aged to a stable temper that does not require cold storage. The partially-aging step is completed at a supplier facility prior to the metal material being received by the manufacturer. Once received by the manufacturer, the partially-aged metal material is heated to a first temperature to perform retrogression. A structure is formed from the partially-aged metal material after performing the retrogression. The structure is shaped and inspected. The structure is then heated to a second temperature in an age oven to reach its final aged state. The final aged state may be close to, meet, or exceed a T6 temper.

Systems and methods for altering microstructures of materials
11466935 · 2022-10-11 · ·

Systems and methods for altering microstructures of materials are disclosed. The system may include at least one computing device in communication with a heating device and an electromagnetic device. The computing device(s) may be configured to alter a microstructure of a material forming a component by performing processes including heating the component using the heating device to a predetermined temperature. The predetermined temperature may be below a first phase-transformation temperature based on the material forming the component, and a second phase-transformation temperature based on the material forming the component, where the second phase-transformation temperature greater than the first phase-transformation temperature. The computing device(s) may also perform processes including intermittently magnetizing the heated component using the electromagnetic device for a predetermined number of cycles, and cooling the component after intermittently magnetizing the heated component.

SYSTEM AND METHOD FOR FACILITATING PULSED SPRAY QUENCH OF EXTRUDED OBJECTS
20230141136 · 2023-05-11 ·

Systems and methods for quenching an extrudate using an atomized spray of liquid are described. A system includes a billet die at a proximal end configured to accept a billet and form an extrudate, a quench chamber located adjacent to the billet die for receiving the extrudate and comprising at least one pulsed width modulation (PWM) atomizing spray nozzle and a control module in communication with the at least one PWM atomizing spray nozzle and configured to independently control a liquid pressure, a gas pressure, a spray frequency, a duty cycle and flow rate of each at least one PWM atomizing spray nozzle.

HOT FORMING METHOD AND DEVICE FOR LARGE-SIZE AIRCRAFT THIN-WALLED PART OF HIGH-STRENGTH ALUMINUM ALLOY
20230203633 · 2023-06-29 ·

Solution heat treatment is performed on a blank to dissolve initial coarse secondary phases, to obtain a uniform solid solution microstructure. The blank subjected to the solution heat treatment is transferred into the temperature-controllable forming die to be stamped and quenched. During forming, the temperature and the pressure are further maintained for a period of time. The temperature of the forming die is adjusted to a second-step aging temperature for the second-step aging treatment. In a two-step aging temperature range, stress relaxation occurs while strengthening precipitates are rapidly precipitated, thereby improving strength and dimensional accuracy of the formed part. On the premise of ensuring quality of the formed part, employing stepped aging treatment shortens the aging cycle and reduces energy consumption in the production and manufacturing process..