A hydraulic tensioner includes a housing defining a cavity configured to receive a fluid from a pressurized fluid source. The hydraulic tensioner also includes a piston disposed within the cavity and configured for movement between a retracted position and an extended position based on a pressure of the fluid. Additionally, the hydraulic tensioner includes a sleeve disposed within the cavity and having an inner surface and an outer surface spaced from the inner surface, the inner surface defining an interior aperture for receiving the piston. Moreover, the sleeve has a thickness of 2 mm or less between the inner surface and the outer surface.

A method for manufacturing metal sealing caps comprising providing a strip or sheet of aluminum alloy of the grade known to a person skilled in the art as brilliant or grand brilliant, typically being coated on at least one of the two surfaces thereof, generally the surface intended for the inside of the cap, with a layer of stamping varnish is described herein.

An apparatus for manufacturing a bracket-integrated double-layer door impact beam is provided. The apparatus includes a lower mold having a lower cavity formed with a base material molded to have a U-shaped cross section and a predetermined length. The base material is seated on the lower cavity. A lower electrode terminal is disposed in the lower mold to contact the base material. An upper mold has an upper cavity therein and is coupled with the lower mold to pressurize both end portions of the U-shaped cross section of the base material inward to form the base material with an O-shaped cross section. An upper electrode terminal is disposed in the upper mold to contact the base material.

A coating composition comprising (i) a reaction product of two different polyesters, a trimellitic polyanhydride, and a curing agent, for example, an aminoplast; and (ii) an epoxidized polybutadiene polymer. The compositions are useful in coating food and beverage containers, particularly 2-piece cans formed by drawing and redrawing (DRD).

A production process for stamped parts carried out from bales of sheets (1), a first moving robot (2), a heating device (3) with a liquid cooling unit (4), a second moving robot (4), a hydraulic press (5) with a specific molding tool, a third moving robot (6), and a conveyor belt (8), controlled by an electronic control unit. Said specific molding tool is provided with channels for cooling done through heat exchange, via water circulation, where the cooling rate is controlled by means of the liquid's flow and temperature control.

A method of manufacturing an item, notably a culinary item, includes: providing a support in the form of a preform; preparing a sol-gel composition; hydrolyzing the sol-gel precursor, followed by a condensation reaction; applying onto at least one support surface of the preform at least one layer of the sol-gel composition to form a sol-gel coating layer; and thermally treating the sol-gel coating layer to solidify the coating layer. Further, before thermally treating the sol-gel coating, the method includes pre-densifying the coated preform and stamping the preform to produce a final form of the culinary item.

The present invention generally relates to the modification of a deep-drawing sheet blank (P) for electric resistance heating. Generally, the modified sheet blank comprises slits (Z) being made in the edges of the blank (P) transversely to the electric current flow and oriented towards the perimeter of the forming zone (T). The distances between the ends of the slits (Z) and the forming zone (T) perimeter may be equal. The ends of the slits (Z) oriented towards the forming zone perimeter (T) may also be rounded.

An electrostatic oiling system for use with single blanks in batch systems having an open spray chamber without the need for a negative vacuum chamber. Further, the provided electrostatic oiling system may utilize induction beams and a charge wall that allows for utilization of a smaller vacuum system. Further, the provided electrostatic oiling system may provide variable blank coverage without the need for metered pumps.

Disclosed are a stamping method and a deep-drawing die for an aluminum alloy liner of a large-volume hydrogen storage cylinder, which solve that technical problem of low production efficiency of processing the aluminum alloy liner of the large-volume hydrogen storage cylinder by adopting strong spin and thinning of an aluminum tube in the prior art. The stamping method includes heating and stamping an aluminum ingot into a cup-shaped rough blank, then cold deep drawing the cup-shaped rough blank for thinning and lengthening into an aluminium alloy liner, and the deep-drawing die includes terrace die and thinning dies.

Steel sheet coating compositions or polymeric resin or ceramic properties are produced by admixing an aluminum coordinate complex and an aluminum resin, a polysilazane as a source of silicon, an organic solvent, an organic synthesis catalyst, and a non-metallic, non-ionic, low-nucleophilic base. The admixed coating is applied to sheet steel prior to hot-stamping in order to inhibit formation of iron oxides and to improve steel sheet surface characteristics.