Electric galvanizing process and its impact

We are galvanized this keyword Glossary:
tungsten eletrode-galvanized galvanized concept: is the use of electrolysis, the workpiece surface to form a uniform, dense, with good kinds of metal or alloy layer deposition process.
1 galvanized decomposition process steps after the division of work is as follows:
Let galvanized iron alloy plating process for the case be decomposed as follows:
The first step: chemical degreasing → 2: hot water washing → 3 → 4 → 5 electrolytic degreasing hot water washing → → 6th 7th 8th for highly corrosive → washing → Step 9 galvanized iron alloy → Step 10 washing → washing → 11 → Section 12 Section 13 light passivation → 14 → 15 drying washing.
From the above we can analyze: A total of 15 processes to go only after the completion of the entire plating process.
2 With regard to the process of electro-galvanized plating solution preparation processes.
For the process of electro-galvanized plating solution configuration issues, we as a case in 1000 ml description:
(01) prior to the plating bath by adding 1/3 volume of purified water;
(02) with 1/3 of the water soluble sodium hydroxide (dissolved when the fever, care must be taken);
(03) with a small amount of water to zinc oxide into a paste, then add more water, stir. The stirred slowly added to a zinc oxide-dissolved in sodium hydroxide solution, stirring plus side, to fully complexed to the plating bath was added;
(04) When the bath temperature to 30 ~ C or less, add 85g of Baser, stir;
(05) will be dissolved in 15 ml BaseF 15gBaseR, and then the mixture was added to the plating tank;
(06) adding 4 ml of H-O624, stir; add water to the distribution volume;
(07) Add brightener ZF-105A, ZF-105B; stir.
Black passivation process decomposition, such as: the first step of two light-water washing → → washing → No. 3 No. 4 No. 5 black passivation → washing → 6 → 7 post-processing step dry.
3 With regard to the electro-galvanized processing quality factor.
(01) For the plating quality differences: the level and the effects of zinc content.
Zn content is too high, narrow bright, easy access to the coating thickness, coating decreased iron; zinc content is too low, light range, to achieve the desired thickness takes a long time, the high iron content in the coating.
(02) and low sodium content quality of the electroplating
Sodium content is too high, the high temperature burn easy operation; sodium content is too low, the dispersion is poor.
(03) Iron Content
If the iron content is too high, the iron content in the plating layer will also be relatively high, the passivation film does not shine; iron content is too low, low iron content in the coating, corrosion resistance decreased, partial color olive.
(04) on the electroplating brightener quality of
ZF-IOOA too high, the coating brittle; too low, the low current region without coating, passivation uneven color; ZF a 100B is too high, the coating brittle; too low, the entire coating does not shine.
(05) After the temperature is too high on the quality of the actual impact of the electroplating
Temperature is too high, dispersing capacity decreased, the high iron content in the coating, corrosion resistance decreased, the passivation film, uneven color, blur; temperature is too low, the high current density area burnt, the coating brittle, slow deposition.
(6) after movement of the cathode on the plating quality of
Cathode must be moved. Moving too fast, high current density area coating roughness; too slow, it may generate airflow, local uncoated.
Therefore, the above plating technology and electroplating process dismantling process, we can clearly understand galvanized plating process and details of the deal on the plating quality. Actively do this work in order to come up with high quality plating processed products out.
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