| 摘要 |
FIELD: electroplating in aircraft and automobile and other branches of industry; electrolytic chromium plating of steel parts. ^ SUBSTANCE: the invention is pertinent to electroplating, in particular, ^ to electrolytic chromium plating of steel items in the electrolytes containing ions of III, also may be used for production of coatings on parts of a friction or parts of the hydraulic systems operating under pressure in the items of aircraft, automobile and other branches of industry. The electrolyte contains (in g/l): III - 50-350, Na2C2O4 - 20-30, Na2SO4 - 60-70, NaF - 25-30, A12(SO4) - 3-18, H2 O - 90-110, powder 123 - 1- 100. The method provides for a gating of the constant electric current between the anode and the cathode in the electrolyte of the offered composition, where the cathode is a a steel part. The technical result of the invention is an increase of microsolidity of a part and the chromium plating adhesion, a decrease of porosity of the coatings at a high speed of the chromium plating process. ^ EFFECT: the invention allows to increase microsolidity of the treated parts, adhesion of the chromium plating coatings and speed of the process. ^ 6 cl, 2 tbl |
