The invention relates to a heat transfer tube (9) for falling film evaporation having a heating medium surface (21) to be heated by a heating medium, a falling film surface (20) to have spent liquor passing over it, and being made from an iron based high alloy stainless steel material with an alloy content above 16.00% for Chromium and above 1% for Nickel. The falling film surface of the heat transfer tube is equipped with one or several protrusions/indentations forming a multitude of stamped bumps (SB) on the envelope surface of a heat transfer tube such that the distance between adjacent stamped bumps (SB) along a line on the envelope surface parallel to the longitudinal axis of the heat transfer tube is within the range of 3 to 250 mm, said stamped bumps (SB) having a height (hp) in the range 0.3 to 5.0 mm, a width (wp) in the range 1.0-20 mm, and an inclination angle (a) versus a plane orthogonal to a longitudinal axis (CC) of the heat transfer tube in a range of 0-70 degrees so that each stamped bump (SB) is inclined and extends along at least a portion of the heat transfer tube or extend within a plane orthogonal to the longitudinal axis of the heat transfer tube. The invention also relates to a method for manufacturing said heat transfer tube.

The present invention concerns a method for production of a supporting member with an at least partially closed cross-section, having at least a first metal shell and a second metal shell which are connected together at least in portions in the longitudinal direction. The method includes a provision of at least a first and a second metal blank. At least a first and a second metal shell are produced from the respective first and second metal blanks. The first and second metal shells each have at least one floor with two protruding uprights spaced apart from each other and integrally connected to the floor. The first and second metal shells are positioned such that the uprights of the metal shells come into overlapping contact.

The present invention concerns a method for production of a supporting member with an at least partially closed cross-section, having at least a first metal shell and a second metal shell which are connected together at least in portions in the longitudinal direction. The method includes a provision of at least a first and a second metal blank. At least a first and a second metal shell are produced from the respective first and second metal blanks. The first and second metal shells each have at least one floor with two protruding uprights spaced apart from each other and integrally connected to the floor. The first and second metal shells are positioned such that the uprights of the metal shells come into overlapping contact.

A method for forming a curl on an open end of a metal container, for adapting the metal bottle to be closed by a cap, comprising in sequence: inserting the open end of the metal container into a powered first curler roller housing, wherein the first curler roller housing houses a set of first curler rollers, to deform the open end by turning it outwardly so as to obtain a first stage curl; inserting the open end of the metal container having the first stage curl into a powered second curler roller housing, wherein the second curler roller housing houses a set of second curler rollers, to further deform the open end and first stage curl by turning them outwardly and/or curling them so as to obtain a second stage curl; inserting the open end of the metal container or bottle having the second stage curl into a powered third curler roller housing, wherein the third curler roller housing houses a set of third curler rollers, to further deform the open end and second stage curl by turning them outwardly, curling them and/or compressing the second stage curl radially and/or longitudinally downward towards a bottom of the metal container so as to obtain a third stage curl.

The invention relates to a heat transfer tube (9) for falling film evaporation having a heating medium surface (21) to be heated by a heating medium, a falling film surface (20) to have spent liquor passing over it, and being made from an iron based high alloy stainless steel material with an alloy content above 16.00% for Chromium and above 1% for Nickel. The falling film surface of the heat transfer tube is equipped with at least one weld ridge (WR; WR.sub.1, WR.sub.2), said weld ridge having a height (h; h.sub.2) in the range 0.3 to 5.0 mm, a width (w; w.sub.2) in the range 0.5-15 mm, and an inclination angle (; .sub.1, .sub.2) versus a plane orthogonal to a longitudinal axis (CC) of the heat transfer tube in a range of 0-70 degrees so that each weld ridge is inclined and extends helically along at least a portion of the heat transfer tube or extend within a plane orthogonal to the longitudinal axis of the heat transfer tube and forms well ridge portions on the falling film surface such that the distance along the longitudinal axis of the heat transfer tube between adjacent weld ridge portions is within the range of 0 to 250 mm. The invention also relates to a method for manufacturing said heat transfer tube.

A mold having a form and a mandrel and a method for forming an inhalation device. The mold may include the form having a body, a first end, and a second end opposite the first end. The body of may define a channel and a longitudinal axis extending between the first end and the second end. The first end of the body may define a first diameter and the second end may define a second diameter which is larger than the first diameter. The body of the form may taper in diameter from the second end to the first end along the longitudinal axis. The mandrel may be sized to at least partially fit within the channel of the form to define a gap therebetween. The gap may be sized to receive a malleable material and the mold can be used with the malleable material to create an inhalation device.

The objective of the present invention is to provide an apparatus for manufacturing an elbow-shaped duct, comprising: a main body obliquely provided at the upper part thereof; a duct movement guiding part provided to rotate and vertically move; a duct vane forming part including forming jigs symmetrically formed and respectively slid in the opposite directions to be coupled to and separated from each other; a duct vane coupling part including a duct fixing member for guiding the fixing of a duct and a duct vane pressing member for coupling upper and lower vanes of the duct; and a rotary driving part rotatably provided inside the main body, and including an eccentric rotary roller having, at the upper part thereof, a cutting roller for cutting the duct and a forming roller for forming the upper and lower vanes of the duct, thereby enabling the duct to be manufactured, by loading the cylindrical duct on the movement guiding part, as is, and simultaneously performing cutting and forming to correspond to an elbow shape, and thus remarkably reduces manufacturing time.

The objective of the present invention is to provide an apparatus for manufacturing an elbow-shaped duct, comprising: a main body obliquely provided at the upper part thereof; a duct movement guiding part provided to rotate and vertically move; a duct vane forming part including forming jigs symmetrically formed and respectively slid in the opposite directions to be coupled to and separated from each other; a duct vane coupling part including a duct fixing member for guiding the fixing of a duct and a duct vane pressing member for coupling upper and lower vanes of the duct; and a rotary driving part rotatably provided inside the main body, and including an eccentric rotary roller having, at the upper part thereof, a cutting roller for cutting the duct and a forming roller for forming the upper and lower vanes of the duct, thereby enabling the duct to be manufactured, by loading the cylindrical duct on the movement guiding part, as is, and simultaneously performing cutting and forming to correspond to an elbow shape, and thus remarkably reduces manufacturing time.

This hollow shaft member 10 includes paired diameter-reduced sections 11 respectively formed at both shaft ends of a hollow shaft-like tubular material by performing swaging processing on both the shaft ends, and an intermediate section 12 located between the paired diameter-reduced sections, and having an outer diameter larger than an outer diameter of the paired diameter-reduced sections. Shapes of connection boundaries between the intermediate section 12 and the diameter-reduced sections 11 are formed as perpendicular step-shaped sections 13 stepped substantially perpendicular to an axial direction, and the perpendicular step-shaped sections 13 are formed by the swaging processing.

This hollow shaft member 10 includes paired diameter-reduced sections 11 respectively formed at both shaft ends of a hollow shaft-like tubular material by performing swaging processing on both the shaft ends, and an intermediate section 12 located between the paired diameter-reduced sections, and having an outer diameter larger than an outer diameter of the paired diameter-reduced sections. Shapes of connection boundaries between the intermediate section 12 and the diameter-reduced sections 11 are formed as perpendicular step-shaped sections 13 stepped substantially perpendicular to an axial direction, and the perpendicular step-shaped sections 13 are formed by the swaging processing.