DE634959C - Pickling process for transformer and dynamo sheets - Google Patents
Pickling process for transformer and dynamo sheetsInfo
- Publication number
- DE634959C DE634959C DEM131001D DEM0131001D DE634959C DE 634959 C DE634959 C DE 634959C DE M131001 D DEM131001 D DE M131001D DE M0131001 D DEM0131001 D DE M0131001D DE 634959 C DE634959 C DE 634959C
- Authority
- DE
- Germany
- Prior art keywords
- transformer
- pickling process
- pickling
- dynamo sheets
- sheets
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Description
Beizverfahren für Transformatoren- und Dynamobleche Für die Bewertung von Transformatoren-und Dynamoblechen ist u. a. der sogenannte Füllfaktor mit maßgebend, der ein 'Maß für die Ebenheit der Bleche und die Glätte der Oberfläche darstellt. Da die bei der Herstellung entstehende Zunderschicht den Füllfaktor herabsetzt, pflegt man die Bleche nach der Glühung zu beizen. Die bisher für die Beizung benutzten Säuren lösen die Eisenoxyde und nur ungenügend oder überhaupt nicht die sehr fest haftende Kieselsäureschicht.Pickling process for transformer and dynamo sheets For the evaluation of transformer and dynamo sheets is, inter alia. the so-called fill factor is decisive, which is a 'measure of the flatness of the sheet metal and the smoothness of the surface. Since the layer of scale produced during manufacture reduces the fill factor, the metal sheets are usually pickled after annealing. Those previously used for pickling Acids dissolve the iron oxides and only insufficiently or not at all the very solid ones adherent silica layer.
Das im folgenden beschriebene Beizverfahren gestattet eine vollständige Entfernung der Zunderschicht durch Anwendung von zwei Beizbädern. Zunächst wird die Kieselsäure durch Eintauchen in alkalische Lösungen und anschließend die Eisenoxyde, wie üblich, mit Säuren oder Lösungen von sauren Salzen entfernt. Auf diese Weise gelingt es, eine vollständig blanke, zunderfreie Oberfläche zu erhalten. Sehr zweckmäßig ist es, diese Beiz-Z> vor der letzten Walzung vorzunehmen, um zu verhindern, daß die im Laufe der Herstellung entstandene dicke Zunderschicht in das Blech eingewalzt wird. Die eingewalzten Zunderteilchen werden beim letzten Beizen herausgelöst und geben eine Oberfläche mit feinen Vertiefungen, die naturgemäß den Füllfaktor herabsetzen müssen. Durch Walzen nach dem Beizen verschwinden diese Unebenheiten.The pickling process described below allows a complete Removal of the scale layer by using two pickling baths. First will the silica by immersion in alkaline solutions and then the iron oxides, as usual, removed with acids or solutions of acidic salts. In this way it is possible to obtain a completely bright, scale-free surface. Very functional is to do this pickling Z> before the last rolling to prevent the thick layer of scale created in the course of production is rolled into the sheet metal will. The rolled-in scale particles are removed during the last pickling process and give a surface with fine indentations, which naturally reduce the fill factor have to. These unevenness disappear by rolling after pickling.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM131001D DE634959C (en) | 1935-05-16 | 1935-05-16 | Pickling process for transformer and dynamo sheets |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM131001D DE634959C (en) | 1935-05-16 | 1935-05-16 | Pickling process for transformer and dynamo sheets |
Publications (1)
Publication Number | Publication Date |
---|---|
DE634959C true DE634959C (en) | 1936-09-08 |
Family
ID=7332144
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEM131001D Expired DE634959C (en) | 1935-05-16 | 1935-05-16 | Pickling process for transformer and dynamo sheets |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE634959C (en) |
-
1935
- 1935-05-16 DE DEM131001D patent/DE634959C/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE19532278B4 (en) | Method for producing a cold-rolled strip in one pass | |
DE634959C (en) | Pickling process for transformer and dynamo sheets | |
DE673405C (en) | Process for the pretreatment of iron and steel workpieces for non-cutting shaping, e.g. pulling, stretching and rolling | |
US3287237A (en) | Surface treatment of bright annealed strip | |
JPH0114296B2 (en) | ||
US2172041A (en) | Pickling solution | |
US2230319A (en) | Process of producing iron sheets for laminated electric transformer cores | |
DE543994C (en) | Process for the manufacture of rectifier elements | |
DE416194C (en) | Process for stretching, rolling and drawing metals | |
DE894901C (en) | Process for the production of composite sheets | |
DE888401C (en) | Process for straightening workpieces | |
DE685657C (en) | Process for the treatment of scaled, hot-rolled transformer sheets | |
DE688751C (en) | Process for the production of surface alloys by diffusion | |
US2175620A (en) | Treatment of sheets, thin bars, and the like | |
JPH0360920B2 (en) | ||
DE467307C (en) | Process for descaling metallic objects made of stainless steel | |
JPS6345480B2 (en) | ||
DE882175C (en) | Process for descaling sheet metal or strips made of rustproof steels | |
DE677401C (en) | Process for the treatment of scaled, hot-rolled sheets with 1 to 7% silicon | |
DE3115201C2 (en) | ||
DE3534009C2 (en) | ||
US1859698A (en) | Method of making ductile iron-chromium alloys having alpha cold-rolled finish | |
DE977620C (en) | Process for producing oxalate coatings on the surface of metals, especially stainless steels | |
DE579797C (en) | Process for the production of drawn wires, in particular welding wires | |
AT204064B (en) | Process for the production of an aluminum-containing protective coating for ingots, metal pins, blanks and billets |