A cutting apparatus and a cutting blade are provided that are not only capable of restraining a highly-viscous substance from bending but also capable of preventing a damage of a blade edge part. A pair of cutting blades is provided to be capable of approaching/separating movement, and the cutting blades are arranged with blade edge parts facing each other while having thickness directions oriented in the same direction. The cutting blades each have a thickness gradually increased from a blade edge leading end toward a blade root part and have the blade edge parts each offset from the counterpart blade edge part in the thickness direction of the cutting blades within a range facing a thickness-direction surface of the counterpart cutting blade, and the cutting blades each have the thickness-direction surface made of a material having a hardness lower than that of the counterpart blade edge part.

A cutting apparatus and a cutting blade are provided that are not only capable of restraining a highly-viscous substance from bending but also capable of preventing a damage of a blade edge part. A pair of cutting blades is provided to be capable of approaching/separating movement, and the cutting blades are arranged with blade edge parts facing each other while having thickness directions oriented in the same direction. The cutting blades each have a thickness gradually increased from a blade edge leading end toward a blade root part and have the blade edge parts each offset from the counterpart blade edge part in the thickness direction of the cutting blades within a range facing a thickness-direction surface of the counterpart cutting blade, and the cutting blades each have the thickness-direction surface made of a material having a hardness lower than that of the counterpart blade edge part.

An extruded product made of an alloy containing aluminum comprising 4.2 wt % to 4.8 wt % of Cu, 0.9 wt % to 1.1 wt % of Li, 0.15 wt % to 0.25 wt % of Ag, 0.2 wt % to 0.6 wt % of Mg, 0.07 wt % to 0.15 wt % of Zr, 0.2 wt % to 0.6 wt % of Mn, 0.01 wt % to 0.15 wt % of Ti, a quantity of Zn less than 0.2 wt %, a quantity of Fe and Si less than or equal to 0.1 wt % each, and unavoidable impurities with a content less than or equal to 0.05 wt % each and 0.15 wt % in total is disclosed. The profiles according to the invention are particularly useful as fuselage stiffeners or stringers, circumferential frames, wing stiffeners, floor beams or profiles, or seat tracks, notably owing to their improved properties in relation to those of known products, in particular in terms of energy absorption during an impact, static mechanical strength and corrosion resistance properties and their low density.

The present invention relates to a method for producing a lightweight sheet-metal component with varying wall thicknesses, characterized by the following method steps: extruding a lightweight metal to form a profile with a non-planar profile cross section, wherein the wall thicknesses of the profile cross section differ from one another in at least two regions, cutting the profile to length into profile pieces, widening the profile pieces, forming the flattened profile piece into a three-dimensional shaped sheet-metal component, wherein the sheet-metal component has at least two regions with wall thicknesses that are different from one another.

Systems, devices, and methods are described for extruding materials. In certain embodiments, one or more hollow billets are loaded onto an elongate mandrel bar and transported along the mandrel bar to a rotating die. The billets are transported through fluid clamps, which engage the mandrel bar and provide cooling fluid to the mandrel bar tip, and through mandrel grips, which engage the mandrel bar and prevent the mandrel bar from rotating. One or more press-rams advance the billets through a centering insert and into the rotating die. A quench assembly is provided at an extrusion end of the extrusion press to quench the extruded material. A programmable logic controller may be provided to control, at least in part, operations of the extrusion press system.

A tubular structure for a rectangular battery can for an electric vehicle, which is thin and has very high dimensional accuracy in order to contain as much electrolyte as possible within a limited size, and a method of manufacturing the same are disclosed. In particular, extrusion of a material to a predetermined thickness is performed, and drawing of the extruded material to a thickness desired by a final product is performed. Accordingly, desired thickness uniformity of the final product is maintained.

A method and an extrusion or pultrusion device for forming a profile product made from a material in a production direction, said device comprising a rotating die, extending in a radial direction and a width direction, having two opposite first and second side walls and an outer circumferential surface extending in the width direction therebetween, wherein the rotating die comprises a first side portion in connection to the first side wall and a second side portion in connection to the second side wall and a mid-portion extending between the first and second side portions, and a profile definition zone having a longitudinal direction coinciding with the production direction, a height direction and a width direction being perpendicular to the height direction, comprising a through channel comprising a first channel section followed by a second channel section downstream the first channel section with reference to the production direction, wherein the rotating die is rotatable about an axis extending across the production direction and arranged to allow the outer circumferential surface to, while the rotating die rotates, exert a pressure onto a surface of the material when fed through the profile definition zone.

Tread members for climbing products are described herein that have indented treads that may provide enhanced grip and/or improved slip resistance. The treads are formed on a standing or other engagement surface of the tread member. In some approaches, the treads may be incorporated into an upper surface of a rung, step, platform, or plank of the climbing product. The treads include a plurality of pips or ridges extending across the tread member in a first direction. The first direction may be an extrusion direction or a lateral direction. The pips or ridges may provide slip resistance in a direction perpendicular to the first direction. The pips or ridges further have a plurality of indentations or cuts formed therein at an angle of about 5 degrees up to about 90 degrees relative to the first direction. So oriented, the indentations may provide slip resistance in additional directions.