摘要:
The invention relates to a heat exchanger for a motor vehicle, comprising a first flow path (1) with a number of flow conduits (6) for conducting a fluid to be cooled, a deflection region (13), situated downstream of the first flow path (1) and a second flow path (2), situated downstream of the deflection region (13). According to the invention, the flow conduits (6) of the first flow path (1) continue in the deflection region (13) and the second flow path (2) as continuous separate flow conduits (6).
摘要:
The invention relates to a method for producing a metal part. Said method comprises the steps of supplying a strand of metal material and applying a coating from a fluxing agent composition to a surface of the strand of material by means of an application device (1), said fluxing agent composition being applied to only a defined portion of the surface of the strand of material by means of the application device (1).
摘要:
Disclosed is a heat exchanger for a combustion engine, comprising a first connection zone (1, 102) for delivering a fluid that is to be cooled, at least some of said fluid being composed of exhaust gas of the combustion engine, a second connection zone (3, 103) for discharging the fluid, and an exchanger zone (2, 101, 104, 105) which is arranged between the first and the second connection zone relative to a flow path of the fluid. A coolant can flow around the exchanger zone (2, 101, 104, 105) while at least part of the heat exchanger is made of ferritic steel.
摘要:
The invention relates to a fluid channel for a heat exchanger, comprising a metal sheet, wherein the metal sheet has at least one core region of an aluminium base alloy and at least one structure arranged inside the fluid channel, wherein the structure lies against a surface of the metal sheet and can be soldered to the metal sheet in a flux-free manner by way of a first soldering location in a soldering operation, and wherein a soldering region of the metal sheet and a counterpart lie against one another and can be soldered to one another in the same soldering operation as a second soldering location while wetting with flux, wherein an open path between the two soldering locations exists before the soldering operation.
摘要:
The invention relates to a method for producing a metal part. Said method comprises the steps of supplying a strand of metal material and applying a coating from a fluxing agent composition to a surface of the strand of material by means of an application device (1), said fluxing agent composition being applied to only a defined portion of the surface of the strand of material by means of the application device (1).
摘要:
The invention relates to an aluminum band (100, 200, 300) for a component, in particular a brazing component (100', 200', 300'), in particular a tube or a disc, said component comprising a profile with a brazing connection, wherein in at least one area, in particular in the area of the brazing connection: - a first part of the band thickness is taken up by a core layer (1, 10) of a first aluminum alloy; - at least a second part of the band thickness is taken up by at least one plating layer (2.1, 2.2, 20.1, 20.2) of a second aluminum alloy, wherein - the first and the second aluminum alloy are laid out during a brazing process to form a "brown band" layer (30.1, 30.2); and - at least a third part of the band thickness is taken up by at least one "brown band" layer that is formed during the brazing process from the first and the second aluminum alloy, and wherein - a band thickness of the aluminum band (100, 200, 300) is less than 500 μm and - a thickness of the core layer (1, 10) and/or a thickness of the plating layer (2.1, 2.2, 20.1, 20.2) is designed such that after the brazing process at least 5% of the band thickness that is taken up by the first aluminum alloy of the core layer (1, 10) still remains in the at least one area and the "brown band" layer (30.1, 30.2) takes up more than 20 % of the band thickness and the core layer (1, 10) is designed to be multi-layered with one, preferably central, main core layer (1.1, 10.1) and at least one side core layer (1.2).
摘要:
The invention relates to a method for soldering components, in particular heat exchangers, in particular made of aluminium materials, aluminium alloys or wrought alloys, in a soldering furnace, in particular a continuous soldering furnace or a batch-type soldering furnace, which comprises a muffle, which is flushed with protective gas in order to create a protective atmosphere. In order to make the production of soldered components easier, during the soldering of the components the muffle is supplied with such a greatly increased amount of gas, in particular protective gas or reaction gas, that a low-oxygen protective atmosphere is created.
摘要:
The invention pertains to a multi-layered brazing sheet with improved long life corrosion resistance which is achieved by balancing the Zn, Cu, Mn, Si and Mg content of the core and interliner alloy. To this end the brazing sheet comprises a core of a 3xxx alloy, an inner braze cladding of a 4xxx alloy , and between core and inner braze cladding an interliner of a 3xxx alloy, wherein the 3xxx alloy of the core comprises 0.55 - 1.0 wt% Cu, 0.7 - 1.8 wt% Mn,