摘要:
In the installation described, the strip (1) passes longitudinally through a tank closed with a cover (3), said tank being arranged horizontally and filled with processing liquid. In order to optimize this type of installation, and in particular improve the processing quality and minimize the processing time, the tank (2) contains a separate processing duct (4) closed off by an intermediate cover (6) and to which the processing medium is fed through banks of nozzles (9, 10).
摘要:
The present invention relates to method for treating a steel strip by means of a treatment liquid in a treatment station, the treatment station comprising at least a spray section, an immersion section, and a common collection means for the treatment liquid, wherein the steel strip comprises stainless steel and is a continuous steel strip being oriented substantially horizontally, both in its longitudinal and transverse directions, wherein the steel strip has a top surface and a bottom surface, wherein the method comprises transporting the steel strip continuously through the treatment station in a transport direction, the transport direction being parallel to the longitudinal direction of the steel strip, such that -- in a first step, the treatment liquid is sprayed onto the top surface of the steel strip and onto the bottom surface of the steel strip while the steel strip being in the spray section of the treatment station, -- in a second step, the steel strip is immersed in the treatment liquid while the steel strip being in the immersion section of the treatment station, wherein, while treating the steel strip, the treatment liquid is continuously pumped out of the common collection means and through both the spray section and the immersion section of the treatment station, wherein spraying of the treatment liquid onto the top and bottom surfaces of the steel strip is provided using spray nozzles.
摘要:
The invention concerns a method for stripping wires and/or metal strips, comprising unwinding at least one wire or tape through a pickle liquor bath, along an unwinding direction. The invention is characterized in that it further comprises forming in the bath, per wire and/or metal strip, at least one pickle liquor turbulent current which flows along a direction transverse to said unwinding direction, and during said unwinding, passing each wire and/or metal strip through said at least one turbulent current which corresponds thereto. The invention also concerns a device for implementing said method.
摘要:
A process for the continuous pickling in a non-oxidizing acid bath of hot-rolled steel strips, characterised in that the strip is subject to the pickling action of the bath, additioned of a pickling catalyst, under turbulent conditions. An embodiment of the device apt to carry out the aforesaid process is shown in figure 1.
摘要:
Ein Verfahren zum Behandeln der Oberflächen von metallischem Bandgut (1), insbesondere zum Beizen von Walzgut, sieht vor, das Bandgut (1) in einem Beizbecken (2) durch einen Behandlungskanal (3) zu transportieren und mit einem säurehaltigen Beizmedium (4) in Strahlen (5) zu besprühen. Um auch schwer beizbare Bandgüten (Stahlgüten) schneller zu beizen, die mit einer relativ niedrigen Bandgut-Geschwindigkeiten gefahren werden, kann die notwendige Turbulenz dahingehend erhöht werden, dass innerhalb von Längsabschnitten (6) des Behandlungskanals (3) in zumindest über dem Bandgut (1) gebildeten, quer zur Bandtransportrichtung (7) verlaufenden Trennräumen (8) aus zumindest jeweils einem Düsenrohr (5a) das Beizmedium (4) quer zur Bandtransportrichtung (7) in einen Trennraum (8) eingespritzt wird.
摘要:
Plates to provide a hydrodynamic seal and hydrostatic support for plants performing the pickling and/or chemical treatment and/or cleaning of metallic strip, the plates cooperating at least with the inlet and outlet of the dip tanks (11) in which the metallic strip (12) is fed straight without diversions within the dip tank (11), the plates comprising a first lower sealing plate (15a) and a second upper sealing plate (15b), the first (15a) and second (15b) plates being distanced from each other vertically to define a feed gap (16) for the feed of the metallic strip (12), a plurality of holes (17) for injection of the chemical solution under pressure being contained in the two opposed surfaces (18) of the first plate (15a) and second plate (15b), these injection holes (17) being oriented towards the inside of the tank (11), at least one of the plates (15a-15b) being moved vertically so as to alter as desired the height of the feed gap (16).