Method for plating TC4 titanium alloy threaded surface with copper

• Main Authors: YAO XIAOFEI, CHEN JIAN, YANG WEI, LYU YUKUN, TIAN WEI
• Format: Patent
• Language: Chinese; English
• Published: 09.11.2016
• Subjects: APPARATUS THEREFOR; CHEMISTRY; ELECTROFORMING; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; METALLURGY; PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS

The invention relates to the technical field of metal material surface modification, in particular to a method for plating a TC4 titanium alloy threaded surface with copper. The method sequentially includes the following steps of firstly, alkaline washing, secondly, water washing, thirdly, acid pickling, fourthly, water washing, fifthly, activating treatment, sixthly, water washing, seventhly, electroplating, eighthly, cleaning, ninthly, passivating and tenthly, cleaning and drying, wherein NaOH and Na3PO4 are dissolved in distilled water, and alkaline wash used in the first step is obtained; an acid pickling solution used in the third step comprises HF, HNO3 and H20; Na2Cr2O7 and HF are dissolved in distilled water, and activate fluid used in the fifth step is obtained; and CrO3, NaCl and H2SO4 are dissolved in distilled water, and a passivating solution used in the ninth step is obtained. The method is simple in process, convenient to implement, low in cost, easy to implement and high in production efficien