Aqueous solutions especially for cleaning high strength steel

Details Aqueous solutions especially for cleaning high strength steel Aqueous solutions especially for cleaning high strength steel

1988-11-07

1991-12-24

Pal, Asok

Compositions

Fluent dielectric

N-containing

134 2219, 134 40, 134 42, 252546, 252DIG14, B08B 304

Patent

active

050750402

ABSTRACT:
There are provided improved aqueous chemical cleaning compositions for removing organic and inorganic combustion residues from steel products, said compositions meeting the hydrogen embrittlement potential test criteria set forth in ANSI/ASTM F 519-77. These compositions are of particular utility in cleaning gas turbines in the motoring and running modes. The compositions comprise ethoxylated amines, ethylene diamine tetra acetic acid and demineralized water having a conductivity of or below 0.9 micro mhos. The composition has important application for the aviation and outer-space industries.

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patent: 4517025 (1985-05-01), Plante et al.
patent: 4808235 (1989-02-01), Woodson et al.
patent: 4834912 (1989-05-01), Hodgens, II et al.

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