Background technology
The plastic electroplating goods have concurrently plastics in light weight, solidity to corrosion good, easy-formation and the organic solvent-resistant of metal, fast light photograph, metalluster, thermal conductivity, electroconductibility, electromagnetic shielding, be prone to advantage such as welding, in industry widespread uses such as automobile, motorcycle, five metals, electronics, communications.
The gold plate solidity to corrosion is strong in the plated item; Good conductivity is easy to welding, and is high temperature resistant; And have certain wear resistance, thereby be widely used in the part plating that precision instrumentation, printing plate, unicircuit, electronics shell, electric contact etc. require electrical parameter performance long-term stability.Gold plate also is used to electroplate jewellery, clock and watch part, artwork etc. as decorative coating.Because the price of gold lattice are expensive, so the gold-plated goods yield rate that requires craft of gilding to produce is high, fraction defective is low.
Summary of the invention
Goal of the invention: the objective of the invention is provides a kind of continuous gold-plating technology of fraction defective in order to overcome the deficiency of prior art.
Technical scheme: in order to solve the problems of the technologies described above, the invention provides a kind of continuous gold-plating technology, the concrete steps of this technology are following:
(1) removes workpiece surface greasy dirt and dirt;
(2) worlcpiece surface alkaline matter and carry out surface active;
(3) washing in early stage;
(4) preplating gold;
(5) preplating gold after washing;
(6) gold-plated;
(7) gold-plated after washing and drying up.
The concrete steps of said step (3) washing in early stage are following:
(A1) employing sprays washing 80-100S;
(A2) adopt heat to spray washing 80-100S, water temperature 50-60 ℃.
Step described in the present invention (4) preplating gold carries out in solution A, and each constituent mass umber of solution A is following: 3 parts-5 parts of golden salt, 15 parts-20 parts of Hydrocerol As, pure water 75-80 part.
Step described in the present invention (5) preplating gold after washing adopts the washing of 100% pure water.
Step described in the present invention (6) is gold-plated carries out in solution B, and each constituent mass umber of solution B is following: 5 parts-10 parts of golden salt, 20 parts-25 parts of Hydrocerol As, pure water 80-85 part.
The gold-plated after washing of step described in the present invention (7) adopts the washing of 100% pure water.
Beneficial effect: the present invention has the following advantages:
(1) adopts separately repeatedly gold-plated method among the present invention, and, improved the homogeneity of Gold plated Layer on the workpiece, improved yield rate at the gold-plated after washing of every single;
(2),, need not to have reduced the waste of raw material and practiced thrift cost after craft of gilding is accomplished by the time in case inhomogeneous or inferior can the repairing in advance occur because golden cost is expensive, and the present invention is divided into craft of gilding repeatedly.
Embodiment
Below in conjunction with specific embodiment; Further illustrate the present invention; Should understand these embodiment only be used to the present invention is described and be not used in the restriction scope of the present invention; After having read the present invention, those skilled in the art all fall within the application's accompanying claims to the modification of the various equivalent form of values of the present invention and limit.
Embodiment 1
A kind of continuous gold-plating technology, the concrete steps of this technology are following:
(1) removes workpiece surface greasy dirt and dirt;
(2) worlcpiece surface alkaline matter and carry out surface active;
(3) washing in early stage; Early stage, the concrete steps of washing were following:
(A1) employing sprays washing 80S;
(A2) adopt heat to spray washing 100S, 50 ℃ of water temperatures;
(4) preplating gold; The preplating gold carries out in solution A, and each constituent mass umber of solution A is following: 3 parts of golden salt, 15 parts of Hydrocerol As, 75 parts of pure water;
(5) preplating gold after washing; Preplating gold after washing adopts the washing of 100% pure water;
(6) gold-plated; Gold-platedly in solution B, carry out, each constituent mass umber of solution B is following: 5 parts of golden salt, 20 parts of Hydrocerol As, pure water 80;
(7) gold-plated after washing and drying up; Gold-plated after washing adopts the washing of 100% pure water.
Embodiment 2
A kind of continuous gold-plating technology, the concrete steps of this technology are following:
(1) removes workpiece surface greasy dirt and dirt;
(2) worlcpiece surface alkaline matter and carry out surface active;
(3) washing in early stage; Early stage, the concrete steps of washing were following:
(A1) employing sprays washing 100S;
(A2) adopt heat to spray washing 100S, 60 ℃ of water temperatures;
(4) preplating gold; The preplating gold carries out in solution A, and each constituent mass umber of solution A is following: 5 parts of golden salt, 20 parts of Hydrocerol As, 80 parts of pure water.
(5) preplating gold after washing; Preplating gold after washing adopts the washing of 100% pure water;
(6) gold-plated; Gold-platedly in solution B, carry out, each constituent mass umber of solution B is following: 10 parts of golden salt, 25 parts of Hydrocerol As, 85 parts of pure water;
(7) gold-plated after washing and drying up; Gold-plated after washing adopts the washing of 100% pure water.
Embodiment 3
A kind of continuous gold-plating technology is characterized in that: the concrete steps of this technology are following:
(1) removes workpiece surface greasy dirt and dirt;
(2) worlcpiece surface alkaline matter and carry out surface active;
(3) washing in early stage; Early stage, the concrete steps of washing were following:
(A1) employing sprays washing 90S;
(A2) adopt heat to spray washing 100S, 60 ℃ of water temperatures;
(4) preplating gold; The preplating gold carries out in solution A, and each constituent mass umber of solution A is following: 4 parts of golden salt, 18 parts of Hydrocerol As, 75 parts of pure water;
(5) preplating gold after washing; Preplating gold after washing adopts the washing of 100% pure water;
(6) gold-plated; Gold-platedly in solution B, carry out, each constituent mass umber of solution B is following: 8 parts of golden salt, 21 parts of Hydrocerol As, 82 parts of pure water;
(7) gold-plated after washing and drying up; Gold-plated after washing adopts the washing of 100% pure water.
Embodiment 4
A kind of continuous gold-plating technology is characterized in that: the concrete steps of this technology are following:
(1) removes workpiece surface greasy dirt and dirt;
(2) worlcpiece surface alkaline matter and carry out surface active;
(3) washing in early stage; Early stage, the concrete steps of washing were following:
(A1) employing sprays washing 80S;
(A2) adopt heat to spray washing 100S, 55 ℃ of water temperatures;
(4) preplating gold; The preplating gold carries out in solution A, and each constituent mass umber of solution A is following: 4 parts of golden salt, 18 parts of Hydrocerol As, 78 parts of pure water;
(5) preplating gold after washing; Preplating gold after washing adopts the washing of 100% pure water;
(6) gold-plated; Gold-platedly in solution B, carry out, each constituent mass umber of solution B is following: 8 parts of golden salt, 25 parts of Hydrocerol As, 83 parts of pure water;
(7) gold-plated after washing and drying up; Gold-plated after washing adopts the washing of 100% pure water.