摘要:
The disclosure relates to a method for producing multi-walled tubes, in which a metal strip is rolled up to form the multi-walled tube. The metal strip has at least one steel layer, and at least one solder layer is applied to the steel layer. The solder layer consists at least in part of metal. According to the disclosure, the solder layer is applied to the steel layer by plasma coating.
摘要:
A screw connection device for connecting two pipes with flared ends, comprises a screw, a nut and a spacer. The nut has a front end aperture from which an accommodating space extends to a rear end aperture in a rear end wall. A surface of the nut in the accommodating space has a threaded section which extends toward the rear end wall which has a flange face in the accommodating space. In a pre-installed state, the spacer and a first pipe end with a first flare are accommodated in the nut, such that the spacer is held undetachable between the first flare and the internal thread. A second pipe end with a second flare can be held in the accommodating space by the screw, threaded into the nut such that the second flare is pressed against a sealing surface of the spacer and the spacer is pressed with a further sealing surface against the first flare.
摘要:
A multi-walled pipe and a method for its manufacture involves a steel sheet forming a steel source layer to which a nickel source layer is applied on at least one or both sides. A solder source layer is applied to the one nickel source layer, or one of the two, or both, nickel source layers. The multi-walled pipe is formed from a strip of the coated metal sheet, by means of rolling. The walls of the pipe are soldered by means of heating. In one form, the heating takes place by radiation. In another, it takes place by induction.
摘要:
A fuel line assembly for motor vehicles, having two tubing sections and at least one filter device disposed between the two tubing sections. Fuel is supplied to the filter device via a first tubing section, and fuel is discharged from the filter device via a second tubing section, wherein the filter device has two functional states. In a first functional state of the filter device, the fuel supplied thereto is filtered by means of at least one filter medium in the filter device. After a blocking element in the filter device has been switched to a second functional state, the fuel flows through the filter device via at least one outlet channel, without filtering.
摘要:
A method for coating a screw element, in particular a screw element for connecting pipes, preferably motor vehicle pipes, wherein the screw element has at least one thread as well as at least one unthreaded contact surface. At least areas of the thread are provided with a first coating, and at least areas of the unthreaded contact surface are provided with a second coating. Both the first coating of the thread as well as the second coating of the unthreaded contact surface are applied to the thread or to the unthreaded contact surface via plasma coating.
摘要:
A multi-walled pipe and a method for its manufacture involves a steel sheet forming a steel source layer to which a nickel source layer is applied on at least one or both sides. A solder source layer is applied to the one nickel source layer, or one of the two, or both, nickel source layers. The multi-walled pipe is formed from a strip of the coated metal sheet by rolling. The walls of the pipe are soldered by heating. In one form, the heating takes place by radiation. In another, it takes place by induction.
摘要:
A fuel distributor rail for a fuel injection system for an internal combustion engine in motor vehicles, in particular for gasoline engines. The fuel distributor rail comprises a main tube, wherein the main tube has a fuel channel extending in the longitudinal direction of the main tube. The main tube comprises at least two outlet openings, wherein the outlet openings branch off the fuel channel. A connecting element is arranged on the main tube, wherein the connecting element has an attachment wall that rests against the main tube. The connecting element is connected to the main tube in a material bonded manner and comprises at least two connecting pieces. The connecting pieces have a connecting channel each for the fluidic connection of an outlet opening to each injection nozzle.
摘要:
Tubing for a liquid medium that is to be conditioned, including an inner tube for the liquid-medium that is to be conditioned encompassed by an outer tube, parallel to the inner tube. An outermost tube surrounds the outer tube. At least one duct for the liquid conditioning medium, is disposed between the inner tube and the outer tube and at least one duct for the liquid conditioning medium is disposed between the outer tube and the outermost tube. A redirecting region connects the ducts between the inner tube and outer tube and the outer tube and the outermost tube. The inner tube and the outer tube consist of thermoplastic plastics, and the unit, consisting of the inner tube and the outer tube, is produced by co-extrusion.
摘要:
The invention relates to a screw element for the connection of tubes, preferably motor vehicle lines. A threading and at least one contact surface without threading are provided on the screw element. The screw element has an outer coating and an inner coating. The outer coating comprises a first polymer and nanoparticles of a first solid material. The inner coating may also comprise nonoparticles or a polymer.
摘要:
A fuel distribution rail for a fuel injection system of an internal combustion engine has connected base tube sections defining a longitudinal fuel channel with connector devices fixed on the base tube and a force relieving groove provided on the outer surface of the base tube sections spaced from the connector devices which extend over at least a part, preferably at least over a greater part of the outer surface of the base tube. In one form a cylindrical base tube has a circular force relieving groove surrounding the base tube spaced from the connector device.