EP 0206386 B1 19900808 - BATHS AND PROCESS FOR CHEMICALLY POLISHING STAINLESS-STEEL SURFACES
Title (en)
BATHS AND PROCESS FOR CHEMICALLY POLISHING STAINLESS-STEEL SURFACES
Publication
Application
Priority
FR 8508440 A 19850603
Abstract (en)
[origin: ES8704554A1] Baths for chemical polishing of stainless steel surfaces, comprising, in aqueous solution, a mixture of hydrochloric acid, phosphoric acid and nitric acid, ferricyanide complex ions and an additive capable of decomposing nitrous acid. The baths can be used in particular for chemical polishing of heat exchangers with a very large exchange surface.
IPC 1-7
IPC 8 full level
CPC (source: EP KR US)
Designated contracting state (EPC)
AT BE CH DE GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0206386 A1 19861230; EP 0206386 B1 19900808; AT E55419 T1 19900815; AU 579474 B2 19881124; AU 5808886 A 19861211; BR 8602514 A 19870127; CA 1298762 C 19920414; DE 3673258 D1 19900913; ES 555583 A0 19870401; ES 8704554 A1 19870401; FI 81611 B 19900731; FI 81611 C 19901112; FI 862361 A0 19860603; FI 862361 A 19861204; FR 2582675 A1 19861205; FR 2582675 B1 19921002; JP H072993 B2 19950118; JP S6237381 A 19870218; KR 870000451 A 19870218; KR 930003606 B1 19930508; NO 168716 B 19911216; NO 168716 C 19920325; NO 862175 D0 19860602; NO 862175 L 19861204; PT 82676 A 19860601; PT 82676 B 19880701; US 4678541 A 19870707
DOCDB simple family (application)
EP 86200920 A 19860527; AT 86200920 T 19860527; AU 5808886 A 19860530; BR 8602514 A 19860530; CA 509956 A 19860526; DE 3673258 T 19860527; ES 555583 A 19860602; FI 862361 A 19860603; FR 8508440 A 19850603; JP 12905286 A 19860603; KR 860004304 A 19860531; NO 862175 A 19860602; PT 8267686 A 19860530; US 86972686 A 19860602