DE676792C - Application of the process for the pretreatment of iron and steel workpieces for subsequent deformation - Google Patents
Application of the process for the pretreatment of iron and steel workpieces for subsequent deformationInfo
- Publication number
- DE676792C DE676792C DES124577D DES0124577D DE676792C DE 676792 C DE676792 C DE 676792C DE S124577 D DES124577 D DE S124577D DE S0124577 D DES0124577 D DE S0124577D DE 676792 C DE676792 C DE 676792C
- Authority
- DE
- Germany
- Prior art keywords
- deformation
- application
- iron
- pretreatment
- steel workpieces
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Description
Anwendung des Verfahrens zur Vorhehandlung von Eisen- und, Stahlwerkstücken für die nachfolgende Verformung Die Erfindung betrifft die Anwendung des Verfahrens zur Vorbehandlung von Eisen-und Stahlwerkstücken für die nachfolgende sparlose Verformung nach Patent 673 405 auf Nichteisenmetalle und deren Legierungen, wie Aluminium, Zink, Nickel, Messing, Monelmetall usw., und besteht darin, daß man diese Metalle oder Legierungen zwecks nachfolgender sparloser Verformung durch bekannte Oberflächenbehandlungsverfahren mit einer dichten zusammenhängenden Kristallhaut von Oxyden oder Salzen versieht, deren Kristalle fest mit der Unterlage verwachsen sind.Application of the procedure for the pre-treatment of iron and steel workpieces for the subsequent deformation. The invention relates to the application of the method for the pretreatment of iron and steel workpieces for the subsequent energy-saving deformation according to patent 673 405 on non-ferrous metals and their alloys, such as aluminum, Zinc, Nickel, Brass, Monel Metal, etc., and consists in being able to use these metals or alloys for subsequent economical shaping by known surface treatment processes provided with a dense, coherent crystal skin of oxides or salts, whose crystals are firmly fused with the substrate.
Bei der sparlosen Verformung von Metallen tritt häufig der übelstand auf, daß die Werkzeuge trotz reichlicher Anwendung von Schmiermitteln auf dem zu verarbeitenden Metall anfressen. Findet die Verformung bei erhöhter Temperatur statt oder entstehen bei der Verformung höhere Temperaturen, so tritt häufig sogar ein- Verschweißen des Werkzeugs mit dem zu verarbeitenden Werkstück ein. Aber auch schon ein leichtes Anfressen des Werkzeugs hat die Bildung von Querrissen, Längsriefen oder eine Aufrauhung der Oberfläche zur Folge, die das verformte Werkstück unbrauchbar machen. Mit Rücksicht auf dieses Anfressen der Werkzeuge ist man deshalb in der Technik der sparlosen Verformung von Metallen häufig gezwungen, geringe Umformungsgrade anzuwenden, als es die Verformbarkeit des Metalls zulassen würde.In the economical deformation of metals the evil often occurs on that the tools despite copious use of lubricants on the too corrode processing metal. The deformation takes place at an elevated temperature or if higher temperatures arise during the deformation, this often even occurs Welding the tool to the workpiece to be processed. But also already If the tool is slightly seized, transverse cracks and longitudinal grooves form or a roughening of the surface, which makes the deformed workpiece unusable do. With regard to this erosion of the tools, one is therefore in the Technology of the economical deformation of metals often forced low degrees of deformation than the ductility of the metal would allow.
Eine Wirkung der auf der Oberfläche der zu bearbeitenden Metallwerkstücke erzeugten, mit der Oberfläche fest verwachsenen Schichten nichtmetallischer Stoffe besteht darin, daB die unmittelbare Berührung von Metall zu Metall verhindert wird.An effect of the on the surface of the metal workpieces to be machined created layers firmly attached to the surface non-metallic Substances consists in preventing the direct contact of metal to metal will.
Eine weitere Wirkung der Oberflächen-, schichten nach der Erfindung besteht da4@,i, daß sie Schmiermittel aufsaugen und fiXthalten und so die Wirksamkeit der bei der sparlosen Verformung angewandten Schmiermittel unterstützen. Unabhängig von dieser Schmiermittel speichernden Wirkung ist eine selbständige, das Gleiten der Werkzeuge auf dem Werkstück fördernde Wirkung solcher Oberflächenschichten anzunehmen.Another effect of the surface layers according to the invention insists that they absorb and hold lubricants and so their effectiveness the lubricants used in the economical deformation. Independent This lubricant-storing effect is independent, sliding of the tools on the workpiece to assume the promoting effect of such surface layers.
Bei Anwendung niedriger Umformungsgrade, so bei schwachen Zügen, bleiben diese Oberflächenschichten mehr oder weniger voll-, ständig erhalten; bei Anwendung starker Umformungsgrade, die das eigentliche Anwendungsgebiet des Verfahrens nach der Erfindung darstellen, werden sie praktisch mehr oder weniger vollständig entfernt.If low degrees of deformation are used, such as weak pulls, remain these surface layers are more or less completely preserved; when applying strong degrees of deformation, which is the actual field of application of the process of the invention, they are practically more or less completely removed.
Um auf Nichteisenmetallen und deren Legierungen Oberflächenschichten zu erzeugen, die einerseits das Anfressen der Werkzeuge bei nachfolgender intensiver sparloser Verformung verhindern und andererseits die Verformung wesentlich erleichtern, kann man sich bekannter Oberflächenbehandlungsverfahren bedienen, die in der Metalltechnik Verwendung finden, sei es um die Metalle vor Korrosion zu schützen oder die Oberfläche dieser Metalle zu veredeln (Metallfärbetechnik).To apply to non-ferrous metals and their alloys surface layers to generate, on the one hand, the erosion of the tools with the subsequent more intensive Prevent economical deformation and, on the other hand, make deformation considerably easier, one can use known surface treatment processes that are used in metal technology Find use, be it to protect the metals from corrosion or the surface to refine these metals (metal coloring technique).
Handelt es sich z. B. um die sparlose Verformung von Aluminium und Aluminiumlegierungen, so kann man die Werkstücke mittels elektrolytischer Verfahren oxydieren. Für die meisten Zwecke isst aber schon die wesentlich einfachere und billigere Vorbehandlung in Atzkalk-Gips-Lösung ausreichend, die darin besteht, daß man die Werkstücke 15 bis 30 Minuten in eine auf 85° erhitzte Lösung (Aufschlämmung) von i o g Calciumoxyd und io g Calciumsulfat in 11 Wasser taucht. Die mittels dieses einfachen Verfahrens erzeugte Oberflächenschicht besteht aus etwa 540;ö Aluminiumoxyd, 140/0 Calciumsulfat, 3070 Aluminiumsulfat, 290/0 Wasser.Is it z. B. the economical deformation of aluminum and aluminum alloys, the workpieces can be oxidized by means of electrolytic processes. For most purposes, but even the much simpler and cheaper treatment in eating Atzkalk gypsum solution sufficient, is that the workpieces 1 5 into a heated to 85 ° solution to 30 minutes (slurry) of iog calcium oxide and io g Calcium sulphate is immersed in 1 liter of water. The surface layer produced by this simple process consists of about 540; o aluminum oxide, 140/0 calcium sulfate, 3070 aluminum sulfate, 290/0 water.
Handelt es sich um die sparlose Verformung von Messing, so kann man sich beispielsweise des nachstehend beschriebenen Färbeverfahrens bedienen: Man löst. 4549 Kupfercarbonat (wasserfrei) in 1,131 Salmiakgeist von 26° Baume und 85g Soda in 91 Wasser von 70°C. Beide Lösungen -werden vermischt. In diese Lösung werden die Messinggegenstände einige Minuten lang eingetaucht, zuerst mit kaltem und dann mit heißem Wasser ge--vaschen und sind dann für die nachfolgende apanlose Verformung fertig.If it is a question of the economical deformation of brass, then one can For example, use the dyeing process described below: Man solves. 4549 copper carbonate (anhydrous) in 1.131 ammonia from 26 ° Baume and 85g Soda in 91 water at 70 ° C. Both solutions are mixed. Be in this solution immersed the brass objects for a few minutes, first with cold and then washed with hot water and are then ready for the subsequent apanlose deformation done.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB676792X | 1936-03-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE676792C true DE676792C (en) | 1939-06-12 |
Family
ID=10492149
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES124577D Expired DE676792C (en) | 1936-03-25 | 1936-10-16 | Application of the process for the pretreatment of iron and steel workpieces for subsequent deformation |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE676792C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE945745C (en) * | 1950-09-19 | 1956-07-19 | British Insulated Callenders | Drawing die for the continuous drawing of semi-finished products, e.g. in the form of strips or tubes, made of aluminum or metal with a high aluminum content |
DE967146C (en) * | 1943-06-29 | 1957-10-10 | Kronprinz Ag | Process for cold forming of steel objects |
-
1936
- 1936-10-16 DE DES124577D patent/DE676792C/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE967146C (en) * | 1943-06-29 | 1957-10-10 | Kronprinz Ag | Process for cold forming of steel objects |
DE945745C (en) * | 1950-09-19 | 1956-07-19 | British Insulated Callenders | Drawing die for the continuous drawing of semi-finished products, e.g. in the form of strips or tubes, made of aluminum or metal with a high aluminum content |
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