AT189471B - Process for blackening the surface of iron and steel objects and means for producing a bath for carrying out the process - Google Patents

Process for blackening the surface of iron and steel objects and means for producing a bath for carrying out the process

Info

Publication number
AT189471B
AT189471B AT189471DA AT189471B AT 189471 B AT189471 B AT 189471B AT 189471D A AT189471D A AT 189471DA AT 189471 B AT189471 B AT 189471B
Authority
AT
Austria
Prior art keywords
blackening
bath
iron
producing
carrying
Prior art date
Application number
Other languages
German (de)
Original Assignee
Heatbath Corp
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 Heatbath Corp filed Critical Heatbath Corp
Application granted granted Critical
Publication of AT189471B publication Critical patent/AT189471B/en

Links

AT189471D 1939-05-16 1953-10-27 Process for blackening the surface of iron and steel objects and means for producing a bath for carrying out the process AT189471B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US189471XA 1939-05-16 1939-05-16

Publications (1)

Publication Number Publication Date
AT189471B true AT189471B (en) 1957-04-10

Family

ID=21790569

Family Applications (1)

Application Number Title Priority Date Filing Date
AT189471D AT189471B (en) 1939-05-16 1953-10-27 Process for blackening the surface of iron and steel objects and means for producing a bath for carrying out the process

Country Status (1)

Country Link
AT (1) AT189471B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3011150A1 (en) * 1980-03-22 1981-10-01 Zwez-Chemie GmbH, 5060 Bergisch Gladbach Chemical browning bath for metals - where one electronic temp. comparator maintains bath at constant temp. and concn. by adding water when specified bath temp. is exceeded
DE102012213317A1 (en) * 2012-07-30 2014-01-30 Aktiebolaget Skf Bearing component having opening at surface and polar conversion layer made of iron oxide, useful for movable storage of e.g. gear, where layer comprises two different conversion regions in a direction perpendicular to surface

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3011150A1 (en) * 1980-03-22 1981-10-01 Zwez-Chemie GmbH, 5060 Bergisch Gladbach Chemical browning bath for metals - where one electronic temp. comparator maintains bath at constant temp. and concn. by adding water when specified bath temp. is exceeded
DE102012213317A1 (en) * 2012-07-30 2014-01-30 Aktiebolaget Skf Bearing component having opening at surface and polar conversion layer made of iron oxide, useful for movable storage of e.g. gear, where layer comprises two different conversion regions in a direction perpendicular to surface
DE102012213317B4 (en) 2012-07-30 2019-12-19 Aktiebolaget Skf Bearing component and method for bluing a bearing component

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