AT93782B - Process for treating metals in order to protect them against oxidative and other attacks. - Google Patents

Process for treating metals in order to protect them against oxidative and other attacks.

Info

Publication number
AT93782B
AT93782B AT93782DA AT93782B AT 93782 B AT93782 B AT 93782B AT 93782D A AT93782D A AT 93782DA AT 93782 B AT93782 B AT 93782B
Authority
AT
Austria
Prior art keywords
order
metal
aluminum
protect
attacks
Prior art date
Application number
Other languages
German (de)
Original Assignee
Gen Electric
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gen Electric filed Critical Gen Electric
Application granted granted Critical
Publication of AT93782B publication Critical patent/AT93782B/en

Links

Landscapes

  • Powder Metallurgy (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Behandlung von Metallen, um sie gegen oxydierende und sonstige
Angriffe zu schützen. 
 EMI1.1 
 

 <Desc/Clms Page number 2> 

 auf die Form des zu behandelnden Gegenstandes. Dies wird dadurch erreicht, dass vorher Aluminium in dem zu behandelnden Metall durchgangs verteilt wird und dass das Metall dann nach einem Verfahren gemäss den vorstehend erwähnten Angaben behandelt wird. In manchen Fällen kann die Verteilung derart erfolgen, dass eine gewisse Menge Aluminium im Metall verteilt wird, beispielsweise beim Giessen in Gussstücken. Dies ist aber nur bei gegossenen Teilen durchführbar und selbst da ist es möglich, dass das Aluminium die Teile so hart und spröde macht, dass sie nicht bearbeitet werden können. 



   Gemäss der Erfindung wird also daher vorzugsweise das Aluminium in das Metall eingeführt durch eine vorstehend angegebene Vorbehandlung der Erhitzung mit   Alunüniumpulver unter Ausschluss   der Oxydation : Ist das Metall in dieser Art behandelt worden, so wird es durch mehrere Stunden hindurch bei hoher Temperatur erhitzt, um das Aluminium durch das ganze Metall hindurch zu verteilen. Zufriedenstellende Resultate wurden bei der Behandlung durch etwa sechs Stunden und bei einer Temperatur von zirka   10000 C   erhalten. Hierauf wird das Metall wiederum in einer im Wesen gleichen Art behandelt, d. h. in Berührung mit Aluminiumpulver erhitzt, um den Aluminiumgehalt der äusseren Schicht, der während der hohen Erhitzung durch Diffusion nach innen abgenommen hat, zu erhöhen, worauf es'für den Gebrauch geeignet ist.



   <Desc / Clms Page number 1>
 



  Process for treating metals in order to protect them against oxidizing and other
Protect attacks.
 EMI1.1
 

 <Desc / Clms Page number 2>

 on the shape of the object to be treated. This is achieved in that aluminum is previously distributed in the metal to be treated passage and that the metal is then treated according to a method according to the above-mentioned information. In some cases, the distribution can take place in such a way that a certain amount of aluminum is distributed in the metal, for example when casting in castings. However, this is only feasible with cast parts and even there it is possible that the aluminum makes the parts so hard and brittle that they cannot be machined.



   According to the invention, the aluminum is therefore preferably introduced into the metal by a pretreatment of the heating with aluminum powder as described above, excluding oxidation: If the metal has been treated in this way, it is heated for several hours at a high temperature in order to Spread aluminum throughout the metal. Satisfactory results have been obtained on treatment for about six hours and at a temperature of about 10,000 ° C. The metal is then treated again in essentially the same way; H. heated in contact with aluminum powder in order to increase the aluminum content of the outer layer, which has decreased inwards by diffusion during the high heating, whereupon it is suitable for use.

 

Claims (1)

PATENT-ANSPRUCH : Verfahren zur Behandlung von Metallen, um sie gegen oxydierende und sonstige Angriffe zu schützen, wobei das Metall unter nicht oxydierenden Bedingungen in Gegenwart eines anderen pulverigen Metalles, insbesondere Aluminium erhitzt wird, dadurch gekennzeichnet, dass das so vorbehandelte Metall durch mehrere Stunden bei einer Temperatur von ungefähr 1000 C erhitzt wird, um das Aluminium etc. durch das gesamte behandelte Metall zu verteilen, worauf eine neuerliche Erhitzung des Metalls in Beriihnmg mit Aluminiumpulver od. dgl. erfolgt, um eine Konzentrierung des durch Diffusion nach innen verminderten Aluminiumgehaltes an der Oberfläche herbeizuführen. PATENT CLAIM: A method for treating metals in order to protect them against oxidizing and other attacks, the metal being heated under non-oxidizing conditions in the presence of another powdery metal, in particular aluminum, characterized in that the metal pretreated in this way for several hours at a temperature of about 1000 C is heated in order to distribute the aluminum etc. through the entire treated metal, whereupon the metal is heated again in contact with aluminum powder or the like in order to bring about a concentration of the aluminum content on the surface, which has been reduced by diffusion inwards.
AT93782D 1918-07-10 1920-07-03 Process for treating metals in order to protect them against oxidative and other attacks. AT93782B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US93782XA 1918-07-10 1918-07-10

Publications (1)

Publication Number Publication Date
AT93782B true AT93782B (en) 1923-07-25

Family

ID=21737288

Family Applications (1)

Application Number Title Priority Date Filing Date
AT93782D AT93782B (en) 1918-07-10 1920-07-03 Process for treating metals in order to protect them against oxidative and other attacks.

Country Status (1)

Country Link
AT (1) AT93782B (en)

Similar Documents

Publication Publication Date Title
DE2325138C3 (en) Process for the formation of protective coatings on metal substrates
DE2043676C3 (en) Process for the manufacture of composite bearings
DE1508382B1 (en) METHOD OF MANUFACTURING A HEAT RESISTANT CARBIDE TOOL STEEL
AT93782B (en) Process for treating metals in order to protect them against oxidative and other attacks.
DE1900466A1 (en) Salt bath for descaling metals, especially iron and iron alloys
DE372250C (en) Process for the production of a protective coating on oxidizable metals
AT140193B (en) Process for surface hardening of stainless steels.
AT114842B (en) Process for coating objects with aluminum and aluminum alloys.
DE804636C (en) Process for the pretreatment of metal parts, in particular iron and steel parts, which are used as insert parts in the casting of workpieces made of light metals, in particular aluminum
AT236731B (en) Process for preparing metals for the hot process
AT201963B (en) Process for electroplating ferrous powder metallurgical bodies
AT104584B (en) Process for processing ferrous copper alloys.
AT204064B (en) Process for the production of an aluminum-containing protective coating for ingots, metal pins, blanks and billets
DE1621527A1 (en) Product with a surface resistant to pitting and process for its manufacture
AT243592B (en) Method of coating an iron object by diffusion
DE633922C (en) Use and process for the manufacture of objects from iron and iron alloys enriched with arsenic by means of diffusion
AT138009B (en) Process for hot working, in particular for melting and casting, of magnesium, magnesium waste and magnesium alloys.
DE652545C (en) Method of plating iron with copper
DE514772C (en) Compensation for silver-copper and silver-copper-cadmium alloys
DE312947C (en)
AT157453B (en) Process for producing castings in metal molds.
AT142421B (en) Process for the production of alloys with great hardness, high wear resistance and good cutting force.
AT220334B (en) Tempered wire brick mesh and process for its manufacture
AT152206B (en) Process for the production of a self-lubricating material or self-lubricating body from metal or metal alloy powder and graphite and a material or body produced therefrom.
DE1508382C (en) Process for the production of a heat-resistant carbide tool steel