TWI308603B - - Google Patents

Description

1308603 IX. Description of the invention: [Technical field to which the invention pertains] The present invention is a metal surface treatment process, especially a type of gold, bismuth, using copper without copper sulfate, copper cyanide and copper pyrophosphate; The effect of the upper surface is on the surface of various metal forests, and the standard value of environmental protection. Q Each [Prior Art] In the decoration of the product, the use of resistance, etc., the emphasis is on the ΓίΙΓ solution, which can be divided into two major categories: the fragrance system and the non-saturated system. The mouse is written by Ms. Lai, and the system is based on the technology of the system. But this method has the most = = point: the plating solution itself is highly toxic. Therefore, the workplace must meet safety standards and well-equipped wastewater treatment procedures to ensure the cleanliness of the staff. The harm caused by Wei's relatives is based on electroplating. The plating bath contains heavy metals such as nickel, copper and chromium. 1=The solution of sulfuric acid, brewing, etc., which causes the water source and the soil. With the increasing greenness of environmentally friendly silk, the handling of the electroplating waste liquid has become a problem that must be solved early. Figure 2 shows the flow of the conventional surface process, which was previously processed into the front stage, the middle stage and the back stage. In the front section 2 = the metal surface is cleaned in order to carry out the middle-stage electric clock treatment. Usually, the metal substrate needs to be cleaned on the surface. Because the surface of the metal substrate is 1306603, the surface of the material will have oil, impurities, burrs and other domains in the manufacturing towel. Therefore, in the front heart, everything needs to be carried out. A surface treatment comprising at least one degreasing, water-washing and acid electrolysis treatment. The middle section of the electric ore step is to further the metal substrate: the metal surface treatment, which includes - copper lag treatment, nickel electro-mine treatment and chromium, κ • electricity management. In the traditional electric hardship, the shaft is immersed in a conventional plating solution containing copper ions, and a household is plated on the metal substrate by means of direct current. The copper ion of the conventional electrolyte is made of a copper salt. The copper salt is selected from the group consisting of copper sulfate, copper sulfide, pyrophoric copper or the above copper salt. Need to carry out the nickel layer again, that is, first add money - after recording the money layer, can be plated with chromium, κ gold, bronze and other metals to show the _ color of the wire, without causing serious heavy money m (four) cost will also: r=r==== The development of the dye heart or the regulation of the dye (4) is accompanied by the derivation and intensification of human life and industrial pollution problems. The development of the environment from the beginning of the paste's coordination with the pollution system, waste treatment II, the requirements are gradually extended To the air pollutants in view of its special; Q: sound and so on. At present, the power industry is strong. Her rt rounds, the competition in the tree farm, some companies proposed a complete environmentally-oriented procurement program 1308603 performance guidelines or evaluation process, allowing all suppliers to turn over. Others require suppliers to meet their environmental needs for specific projects such as replenishment, packaging, or pollution emissions from suppliers. At present, the so-called green supply key of silk is mostly referring to the supply chain effect caused by the EU's green product requirements after the 21st century, leading the world's manufacturing industry - Jing Wei to a new era of friendship. The most noticeable specifications for discarded electrical and electronic goods (such as gamma f·

Electncal and Electronic Eq_ent, for £) and banned hazardous substances ^l«The Restriction of Hazardous Substances in Electrical and Electronic Equipment, R〇HS)# 〇RoHS ^|| , ^ 2〇〇6 ^ ? It is completely forbidden for manufacturers to use lead (10), mercury (10), recorded (Cd), hexavalent chromium (Cr+6), poly-biphenyl (job) and desert diphenyl in their products or components. . _ 丝 编 · _, such a request has actually (four) age miscellaneous environmental requirements, but also the basic technical threshold of the silk electric charm #, to meet the environmental requirements of recycling and processing. Therefore, the inventors have made efforts to improve in view of the fact that the conventional money-making process is still lacking, thereby reducing or eliminating the disadvantages of the conventional process. [Summary of the Invention] The main purpose of this month is to provide a metal plating process in which the surface is processed on a substrate, and then a color dye is used. The daily layer is made into various metal colors, and the process is fine without copper sulfate, 2 copper and f, and Wei copper. The electrolyte is not only costy, but also can reduce the traditional U Wang's corrosion record 4 and meet the secret regulations. Silk, service protection and 1308603 harmless process of the human body. The other object of the present invention is to provide a metal material processing process, which uses -Electrical paint (ELECT_REDACTED ED) to form a metal substrate: a moon layer, ', its appearance , gloss, durability, and no heavy metals, in addition, the resin is smooth, and can be used to provide the desired metallic luster and mirror effect on the metal substrate by adding appropriate color dyes. It replaces metal plating such as κ gold, chrome and bronze in traditional processes to reduce heavy metal pollution. _ _________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ The flow chart of the metal plating process of the hairpin month comprises the steps of - the front stage processing step - the towel stage processing step and the - back stage processing step. Wherein the preceding treatment step is performed by at least one degreasing, water washing, acid electrolysis and electrolysis treatment on the metal substrate of a main electric ore. In a preferred embodiment of the invention, the pre-treatment step is a degreasing treatment followed by a first-washing treatment, an acid electrolysis treatment, a second water washing treatment, an electrolysis treatment and a third water washing treatment. The middle treatment step Wei Wei surface treatment 121 is to immerse the metal substrate in an environmental protection test without containing copper sulfate or cesium cyanide (IV), and forging the zinc layer on the metal substrate. At least one water wash, reduction and anti-oxidation treatment. The post-processing step includes an electrocoating treatment by applying an electrocoat (ED)-resin layer on the upper riding layer. In this embodiment, the electrocoat (10) is a cationic electrocoat (CATHODIC ELECT_EPGSITION PAINTS, abbreviated as (10)), and the 1308603 cationic electrocoat can be a cationic epoxy electrocoat, a cationic modification Behrike force electric paint or cationic gold diamond electric paint. The back-end electrocoating treatment further comprises the steps of: connecting a metal substrate to the negative electrode of the power source; and placing the metal substrate and the anode in an aqueous solution containing a cationic electrocoat (CED), wherein the aqueous solution Further, a neutralizing agent is included; and the aqueous solution containing the cationic electrocoat (CED) is continuously discharged to cause the transparent resin layer to adhere and solidify on the zinc layer. After the electro-painting treatment, 'do at least one wash without baking step. In the present embodiment, the system is subjected to a water-removing treatment, a water washing treatment, and a baking treatment. In the traditional electroplating process, a copper layer and a recording layer are deposited on a metal substrate, and other non-ferrous metals are added to the metal to give a different metallic luster. For example, a gold layer on the mine shows a golden luster. —#靖表演# Gray silk, or a layer of chrome on the clock to express silvery white luster. The metal material of the Benedictine process, the ship is first plated with a zinc layer on the metal substrate, and then an electrocoat (ELECTRODEPOSITION PAINTS 'abbreviated as ED) is used to apply a resin layer on the zinc layer, the appearance, It has good gloss, durability, and no heavy metal. In addition, the resin layer has a smooth surface and can achieve a mirror effect. And reduce the heavy metal pollution by electroplating with metals such as nickel, chromium and bronze in a traditional process with appropriate color. 1308603

The limits for controlled substances in the RoHS specification are shown in the table below.

Material & Toxicological Profile

Lead (Pb)

Mercury (Hg)

Cadmium (Cd)

Hexavalent Chromium (Cr-VI)

Maximum Concentration (ppm) 1000 1000 100 1000 The finished product of this process 'that is, a metal substrate is processed by the metal ore processing of the present invention and sent to the SGS organization for inspection. The result is in the test item hexavalent chromium (Cr) +6), cadmium (Cd), lead (Pb), and mercury (Hg) are all shown as n. D. (not detected) 'The plating method of the present invention is shown to comply with the European Union's specifications for R〇HS. The test results are shown in the table below. Test item unit detection limit result hexavalent chromium (Cr+6) ppm 2 ND cadmium (Cd) ppm 2 ND seeking (Hg) ppm 2 ND error (Pb) ppm 2 ND According to the above description and illustration, this It is clear that the intended purpose of the invention can be achieved, and a metal plating process is provided, which comprises a anterior processing step for at least one degreasing, water washing, acid electrolysis and alkali electrolysis treatment of a metal substrate to be electroplated, and processing in 1308603 The step 'includes immersing the metal substrate in an environmentally friendly electrolyte containing no copper sulfate, copper cyanide and copper pyrophosphate, and strategizing on the metal substrate, and then performing at least one water washing The oxidation treatment, the latter step, includes an electrocoating treatment process, which is followed by electrocoating on the above-mentioned zinc layer, and the resin layer of the mixed color dye is mixed, and then subjected to a water washing and baking treatment. In this way, an environmentally-friendly plating layer with a mirror effect and various metal wires can be produced on the metal substrate, and meets the requirements of the European Union with the national standards. 〃

The above is a specific embodiment of the present invention and the application of the present invention. According to the disclosure or solution of the present invention, it is still possible to change the embossing of the subject, and it is still beyond the scope of the patent and the scope of the patent. All should be considered as belonging to the technical scope of the present invention. [Simplified illustration of the drawing] The first picture is the flow chart of the metal material pro-process of the gamma. The second picture is the flow chart of the traditional electroplating process [the main component symbol description] 11 the first stage processing step 12 the middle part processing step 121 surface treatment 13 rear stage processing step 131 electrocoating coating 11

Claims (1)

1308603-, 降告本 I X. Patent application scope: 1. A metal plating process, the steps of which include: (1) a front-end processing step for at least one stripping of a metal substrate to be electroplated: grease, water washing, Acid electrolysis and alkali electrolysis treatment; (2) The middle treatment step, first surface treatment, immersing the metal substrate in an environmentally friendly electrolyte containing no copper sulfate, copper cyanide, copper pyrophosphate, nickel and chromium, and Electroplating a zinc layer on the metal substrate, at least one water washing, reduction & oxidation treatment; (3) a post-treatment step, first performing an electrocoating treatment, that is, on the zinc layer A resin layer is applied and at least one water washing and baking treatment is performed. 2. A metal plating process as claimed in claim 1, wherein the electrocoating treatment is to apply a resin layer of a mixed color dye to the zinc layer. 3. A metal material keying process as claimed in claim 4, wherein the electrocoating process comprises at least the following steps: > (1) connecting the zinc metal substrate to a negative electrode of a power source; (2) The recorded metal substrate and the anode are placed in an aqueous solution containing _ sub-electrocoating (CED), wherein the aqueous solution further comprises a neutralizing agent; and (3) the aqueous solution containing the cationic electrocoat ((10)) By passing through the direct current, the transparent resin layer is adhered and solidified on the above zinc layer. 1 For a metal material electro-metallizing process as described in item 3 of the patent scope of May, the step (2) contains a cationic electrocoat (the aqueous solution of (10) further comprises a color dye. 5. As claimed in claim 3 In the metal key switch process, the cation 12 1308603 electropaint (CED) is a cationic epoxy resin electrocoat, a cationic modified acrylic resin electrocoat or a cationic gold drill electropaint 6. A metal plating process as claimed in claim 3, wherein the neutralizing agent is an organic acid or an inorganic acid.