A workpiece production apparatus includes a stationary die assembly and a movable die assembly. The stationary die assembly includes a stationary die body and a die. The movable die assembly includes a movable die body, a shaping punch, a blanking punch, a first pushing member, and a second pushing member, which has a higher rigidity than the first pushing member. The workpiece production apparatus is configured to bring the movable die assembly close to the stationary die assembly, thereby sequentially performing pre-shaping of a plate, punching-out of a workpiece from the plate, and final shaping of the workpiece by pushing the shaping punch with a distal end of the second pushing member in conjunction with compressive deformation of the first pushing member.

A method for manufacturing a structural surface heat exchanger of preset or left-hand final shape for an aircraft includes the steps of forming, shaping and assembling, by welding or brazing, a first corrugated skin and a second smooth skin in order to obtain channels. Each channel is delimited by a corrugation of the first skin and the second smooth skin so as to form a structural surface heat exchanger of preset or left-hand final shape, wherein a fluid is configured to circulate in the channels and air is configured to circulate in contact with the second smooth skin.

A multilayer static gasket, stopper region containing distance layer therefor and methods of construction thereof are provided. The gasket includes at least one metal functional layer and at distance layer including a stopper region. The functional layer has a seal bead surrounding at least one passage to be sealed. The distance layer has a thickness extending between generally planar opposite sides, with each of the opposite sides of the distance layer having a plurality of protrusions extending outwardly therefrom and a plurality of depressions extending inwardly therein, wherein the protrusions and depressions form the stopper region. Each of the depressions extends into a separate protrusion, thereby forming an underside of the associated protrusion. The depressions extend into the opposite sides of the distance layer a distance that is equal to or greater than ½ of the thickness of the distance layer.

A multilayer static gasket, stopper region containing distance layer therefor and methods of construction thereof are provided. The gasket includes at least one metal functional layer and at distance layer including a stopper region. The functional layer has a seal bead surrounding at least one passage to be sealed. The distance layer has a thickness extending between generally planar opposite sides, with each of the opposite sides of the distance layer having a plurality of protrusions extending outwardly therefrom and a plurality of depressions extending inwardly therein, wherein the protrusions and depressions form the stopper region. Each of the depressions extends into a separate protrusion, thereby forming an underside of the associated protrusion. The depressions extend into the opposite sides of the distance layer a distance that is equal to or greater than ½ of the thickness of the distance layer.

The present disclosure discloses a method for improving yield strength of one or more workpieces. The method includes positioning the one or more workpieces in a punch and die assembly and operating the punch and die assembly such that, a plurality of surface protrusions are formed on the one or more workpieces. The plurality of surface protrusions are formed by plastic deformation on the one or more workpieces, to improve yield strength of the one or more workpieces. The present disclosure also provides an apparatus to improve yield strength of the one or more workpieces. The present disclosure is configured to improve yield strength of the one or more workpieces, without altering its mechanical characteristics.

A manufacturing method of middle member structure includes steps of applying an external force to a plate body to shape the plate body and form multiple recessed/raised structures and perforating the plate body to form multiple perforations misaligned from the recessed/raised structures so as to achieve a plate body with recessed/raised structures. The middle member structure is applicable to a vapor chamber to enhance the vapor-liquid circulation effect and the support for the internal chamber.

The present disclosure discloses a method for improving yield strength of one or more workpieces. The method includes positioning the one or more workpieces in a punch and die assembly and operating the punch and die assembly such that, a plurality of surface protrusions are formed on the one or more workpieces. The plurality of surface protrusions are formed by plastic deformation on the one or more workpieces, to improve yield strength of the one or more workpieces. The present disclosure also provides an apparatus to improve yield strength of the one or more workpieces. The present disclosure is configured to improve yield strength of the one or more workpieces, without altering its mechanical characteristics.

A method for preparing a modular planar interconnect plate includes steps of a) providing a metal blank sheet having a main region and two first lateral regions, b) forming two openings respectively in the first lateral regions, and c) stamping to form protrusions and depressions at the main region on lower and upper surfaces of the metal blank sheet. In the stamping step, each of two lower surrounding protrusions and two upper surrounding depressions is formed to surround a corresponding one of the openings, and each of an upper surrounding protrusion and a lower surrounding depression is formed to surround the first lateral regions and the corresponding ones of the protrusions and depressions formed at the main region.

Equipment for manufacturing a separator plate for a fuel cell comprises: a press which receives a conveyed first metal strip and second metal strip, vertically arranges the metal strips side by side, and forms patterns on each of the first metal strip and the second metal strip; a welding machine which overlaps the first metal strip and the second metal strip conveyed from the press, and integrally joins the metal strips by welding same in a state in which the patterns are aligned face-to-face with each other; and guide rolls which are arranged in front of and behind the press and guide the first metal strip so that the first metal strip is supplied to the welding machine at an overlapping position with the second metal strip after passing through the press at a position spaced vertically apart from the second metal strip.

A manufacturing method of a body frame includes a pre-strain step of press molding a wavy shape portion in the body frame to apply pre-strain after any press molding to mold the body frame.