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Dasheng Metal Product Center
Surface treatment processes including galvanizing, copper plating, nickel plating, chromium plating, zinc-nickel alloy, gold plating, silver plating, tin plating, and aluminum oxidation
Dasheng's four core advantages
Provide fast, considerate, reliable, and satisfactory service
Certificate of Honor
According to customer and industry requirements, the company has successively passed the ISO9001, ISO14001, ISO/TS16949 and other quality system certifications, adhering to the quality policy of "struggle and dedication, pragmatism and innovation, continuous improvement, excellence, full participation, and customer satisfaction". It has won the attention and recognition of customers.
Company facilities
Advanced fully automatic computer production lines, with independent physical and chemical laboratories, salt spray testers, X-RAY thickness gauges and other complete quality control and detection methods, as well as fully equipped various testing equipment and instruments, and a full-function chemical analysis room.
Detection experiment
Advanced fully automatic computer production lines, with independent physical and chemical laboratories, salt spray testers, X-RAY thickness gauges and other complete quality control and detection methods, as well as fully equipped various testing equipment and instruments, and a full-function chemical analysis room.
Perfect after-sales and intimate service
A perfect service system, providing 24-hour online service, from design and production to after-sales service, carefully serving every link, responding promptly, and providing more intimate service.
Company http://en.txdsjs.cn/Founded in
Covers an area of more than 26,000 square meters
Complete range of plating types
Served 600 customers
Tongxiang Dasheng Metal Surface Treatment Co., Ltd.
A trustworthy metal surface treatment service provider
Covering an area of more than 26,000 square meters and a building area of more than 19,000 square meters. The company has a complete range of plating species: surface treatment processes including galvanizing, copper plating, nickel plating, chromium plating, zinc-nickel alloy, gold plating, silver plating, tin plating and aluminum oxidation; and a variety of colors: blue and white, colorful, golden, army green, black, etc., which is the only professional electroplating manufacturer in Tongxiang City.
Technical strength
Adhering to the quality policy of "struggle and dedication, pragmatism and innovation, continuous improvement, excellence, full participation, and customer satisfaction"
It has a group of electroplating professionals with high technical skills, senior technicians with more than 20 years of experience in the electroplating industry, and excellent management personnel. Advanced fully automatic computer production lines, with independent physical and chemical laboratories, salt spray testers, X-RAY thickness gauges and other complete quality control and detection methods, as well as fully equipped various testing equipment and instruments, and a full-function chemical analysis room.
News Center
Share the latest information in the metal surface treatment industry with you
This kind of wastewater is generally strong acid water quality, the water quality is complex, the composition is not easy to control, which contains chromium, cadmium, nickel, copper, zinc, gold, silver and other heavy metal ions and cyanide, some of which are carcinogenic, teratogenic and mutagenic toxic substances. When these heavy metals enter the water body, they have a magnifying effect on the food chain and can accumulate in some organs of the human body, causing chronic poisoning and endangering human health. In the treatment of electroplating wastewater, because the wastewater contains many expensive heavy metals, if the heavy metals in the wastewater are recycled as a resource, it will not only solve the pollution of heavy metals, but also have certain economic benefits. At present, the commonly used methods of heavy metal wastewater treatment include chemical precipitation, reduction, adsorption, membrane separation, coagulation, ion exchange, electrochemical method and so on. It is found that the selection of polyacrylamide for the treatment of this kind of wastewater is directly related to the pH value of the wastewater. The best use method of polyacrylamide for electroplating wastewater and matters needing attention 1. The best model of polyacrylamide and the best dosage of the product were determined by small scale test. 2. The product is prepared into 0.1% (refers to solid content) of aqueous solution, and neutral water without salt is suitable. 3. When dissolving water, the product should be evenly sprinkled into the stirred water and heated properly (< 60 ℃) to form a solution. 4. Solid products are packed in polypropylene woven bags lined with plastic bags, 25kg each. 5. Solid products should not be scattered on the ground to prevent the ground from becoming slippery after absorbing moisture. 6. When preparing PAM aqueous solution, it should be carried out in enamel, galvanized, aluminum or plastic barrels, not in iron containers. 7. When dissolving, attention should be paid to adding the product evenly and slowly into the dissolver with stirring and heating measures. It should be avoided to solidify. The solution should be prepared at a suitable temperature. Excessive mechanical shear should be avoided for a long time. It is suggested that the agitator should be 60-200 rpm, otherwise it will lead to polymer degradation and affect the use effect. When the majority of electroplating wastewater is in strong acid condition, we generally choose cationic coagulant, coagulate in alkaline condition, and select anionic polyacrylamide with ultra high molecular weight as coagulant aid. What should be noted here is that due to the characteristics of electroplating wastewater itself, its pH value is relatively high. Before selecting reagents, it is better to select water samples for beaker test, and determine the type selection and dosage. Generally, 20-100 kg of product is needed for every thousand tons of electroplating wastewater to be treated. The dosage of Polyacrylamide in the treatment of electroplating wastewater is about 2-10 G. The amount of polyacrylamide used in electroplating wastewater should be determined by considering the turbidity of wastewater, molecular weight of polyacrylamide and impurities in water.
2020/04/08
Discussion on the differences between metal electroplating process and plastic electroplating
As the name implies, plastic electroplating begins with the analysis of the nature of plastic materials. For example, in the subject part of plastic electroplating processing, plastic itself can not conduct electricity, so the conductive treatment part of the electroplating process needs to be carried out first, that is, the activation and chemical plating of electroplating materials are required, After finishing this electroplating process, the later electroplating process is similar to the electroplating process of hardware metal material products. However, with the different product quality requirements of electroplating processing, there are different electroplating process details that need to be paid attention to. The problems in the process of using after electroplating are different Compared with the electroplating process of various metals and other metals, there is still a potential difference between the basic body of the material product and the coating. If the potential of the electroplating layer of the hardware product is positive, it will be the cathodic plating layer, which can only play a common protective role. If there are pores on the surface of the plating layer or the surface is damaged during the electroplating process, the potential difference between the basic body and the coating layer is still existed, If it is in the presence of electrolyte, the basic body of the product material is first corroded by chemical substances, such as the steel we often use to process copper plating; if the potential on the surface of the coating is negative, we call it anode electrodeposition, which not only has the ordinary protection function of organic machinery, but also has the basic electrochemical protection function, The electroplating layer is usually corroded first. If steel is used for galvanizing, Yongchang electroplating plant will first remove the zinc coating of the waste galvanized products, and the surface of the material workpiece is still intact, which is rarely corroded by weather factors or other reasons. This is the principle or reason Electroplating of metal products can be described by the following process flow: mounting → degreasing and washing → derusting and washing → activation and washing → electroplating → washing → drying → inspection → packaging. Among them, electroplating, common are: zinc plating, copper plating, nickel plating, gold plating, silver plating, tin plating, rhodium plating, palladium plating and alloy electroplating. It can be single-layer plating or multi-layer plating. Electroplating types: single metal plating (such as the above), alloy plating, composite plating, chemical plating. Vacuum coating and ion sputtering are also called electroplating by many people. Such as aluminum oxidation, blackening / bluing chemical polishing, electrochemical polishing, passivation, etc., are also classified as electroplating.
2020/04/08
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According to customer and industry requirements, the company has successively passed the ISO9001, ISO14001, ISO/TS16949 and other quality system certifications, adhering to the quality policy of "struggle and dedication, pragmatism and innovation, continuous improvement, excellence, full participation, and customer satisfaction".
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