1. Is Sanfu cyanide free alkali copper technology mature?

Answer: the cyanide free alkali copper process has been mature. In hardware manufacturing, it can replace cyanide pre copper plating process; In the manufacturing of sanitary zinc alloy parts, it can replace cyanide copper plating + pyrophosphate copper plating process; In the manufacturing of aluminum wheel hub, it can replace the pre plating process.

2. When did Sanfu cyanide free alkali copper technology start mass production and application?

Answer: March 2007.

3. Is the cyanide free alkali copper technology a product independently developed by Sanfu?

Answer: Yes, Sanfu fully owns the cyanide free alkali copper technology patent.

4. What qualifications or honors have the non cyanide alkali copper technology obtained?

Answer: 1). In 2007, it was designated as a major science and technology project by Guangdong Province. In the same year, Sanfu obtained the national patent for this technology.

2）。 In 2010, the Department of science and technology of Guangdong Province identified the technology & ldquo; It has reached the international advanced level;.

3）。 In 2012, it was selected as the first item (Document No. 13) of the list of national encouraged circular economy technologies and equipment (the first batch) jointly issued by the national development and Reform Commission, the Ministry of environmental protection, the Ministry of science and technology and the Ministry of industry and information technology.

4）。 In 2013, the national development and Reform Commission set it as & ldquo; National demonstration project for industrialization of key technologies of recycling economy of high-density copper electroplating instead of cyanide electroplating & rdquo;.

5. Is it the general trend for China to phase out the cyanide copper plating process?

Answer: the cyanide copper plating process does not meet the environmental protection requirements nor the safety requirements. Under the background that it is not feasible to completely phase out cyanide electroplating technically and economically, the national development and Reform Commission issued No. 40 document in 2006, which defined the cyanide copper plating process as & ldquo; Postpone the elimination of backward processes;. The national thinking to solve the harm of cyanide electroplating is & ldquo; Mature one, replace one;. At present, the cyanide free alkali copper technology has been mature. It is the general trend for the country to gradually raise the environmental protection threshold until the cyanide copper plating is completely eliminated.

6. How should electroplating manufacturers respond to the government' s possible policy of eliminating cyanide copper plating process?

Answer: develop the cyanide free copper plating process, do a good job in technical reserve, and gradually eliminate the cyanide copper plating process, so as to prevent enterprises from being unable to survive under the policy tide.

7. Which famous electroplating enterprises choose Sanfu cyanide free alkali copper technology?

Answer: at present, many electroplating enterprises have adopted Sanfu cyanide free alkali copper technology. The following are only representative enterprises:

Aluminum hub industry giant: Taishan International Transportation Equipment Accessories Co., Ltd;

Leading sanitary ware industry: a world leading sanitary ware enterprise in Xiamen

Hardware representative enterprises: Dunli Group Co., Ltd., Guangzhou Qiangjie hardware and Plastic Co., Ltd., Jiangmen Jinggong electroplating Co., Ltd.

8. Can the current introduction of cyanide free alkali copper process by electroplating enterprises obtain government financial subsidies?

Answer: at present, we have not seen any government document proposing to provide subsidies for this. However, the government clearly encourages electroplating enterprises to develop circular economy and develop environmentally friendly and safe production processes.

9. How does the comprehensive operating cost of cyanide free alkali copper process compare with that of cyanide copper plating?

Answer: quite.

10. Does the existing cyanide copper plating process change to cyanide free alkali copper plating process require significant equipment rectification?

Answer: No.

11. Can the cyanide free alkali copper technology be applied in barrel plating or hanging plating?

Answer: all right.

12. Can cyanide free alkali copper be used on manual or automatic lines?

Answer: all right.

13. What is the largest single tank volume among electroplating manufacturers adopting Sanfu cyanide free alkali copper technology?

Answer: nearly 40000 liters.

14. What is the service life of cyanide free alkaline copper plating solution?

Answer: sustainable use, no need for more slots. Some customers have been producing steadily since the cylinder was opened in 2007.

15. Is it necessary to worry about the gradual aging of the plating solution with the increase of the use time?

Answer: No. cyanide free alkaline copper plating # P # page title # e # solution will not age with the increase of use time, but it should be regularly maintained during use to control the plating solution from pollution.

16. How does the waste water treatment cost of cyanide free alkali copper process compare with that of cyanide copper plating process?

Answer: 1). The cyanide free alkali copper process is applied to hardware to replace the cyanide copper plating process, reduce cyanide discharge, and its waste water treatment cost is not higher than that of the cyanide copper plating process.

2）。 The cyanogen free alkaline copper process is applied to the aluminum wheel hub to replace the pre plating dumb nickel process and reduce the discharge of nickel. Its waste water treatment cost is not higher than that of the pre plating dumb nickel process.

3）。 The cyanide free alkali copper process is applied to the bathroom zinc alloy parts to replace & ldquo; Cyanide copper plating + pyrophosphate copper plating & rdquo;, It shortens the manufacturing process, reduces cyanide discharge, phosphorus discharge and wastewater discharge, and its wastewater treatment cost is lower than & ldquo; Cyanide copper plating + pyrophosphate copper plating & rdquo; workmanship

17. Is the cyanide free alkali copper process wastewater treatment simple? What is the general treatment process?

Answer: cyanide free alkali copper process wastewater treatment is very simple.

Online recovery process: after the copper containing rinsing wastewater is filtered by activated carbon, the wastewater is concentrated by LSR membrane system and RO reverse osmosis membrane system. The concentrated solution is recycled and returned to the plating tank, while the dialysis water is directly returned to the rinsing tank for rinsing water.

Terminal treatment process: add 3-5g / L calcium hydroxide to the wastewater, stir for 10-15 minutes, stand and filter to remove copper ions and complexes in the wastewater, and adjust the pH value of the filtered clear liquid to 7 with sulfuric acid. The copper content in the treated wastewater is lower than 0.5ppm and the COD is lower than 100.

18. What is the appearance and porosity of cyanide free alkali copper coating?

Answer: the coating is semi bright, with fine crystal and very low porosity.

19. What benefits will electroplating enterprises gain from the application of cyanide free alkali copper to aluminum wheel hubs?

Answer: 1). Economic benefits: the yield is improved, the nickel consumption is saved, and the nickel wastewater is reduced.

2）。 Social benefits: environmental protection benefits and safety benefits can be obtained.

20. What is the difference in the quality performance of aluminum wheel hub manufacturing enterprises adopting cyanide free alkaline copper process instead of pre plating nickel?

Answer: in terms of empirical data, the yield rate of aluminum wheel hub manufacturing enterprises adopting cyanide free alkaline copper process instead of pre plating dumb nickel process has been increased by more than 10%.

21. What is the difference between cyanide free alkali copper and pre plated nickel?

Answer: cyanide free alkali copper is better.

22. What benefits will electroplating manufacturers get from the application of cyanide free alkali copper in zinc alloy parts of sanitary ware?

Answer: 1. Economic benefits: the process processing capacity is improved (the dispersion capacity of non cyanide alkali copper is better), cyanide emission reduction, phosphorus wastewater emission reduction, and wastewater emission reduction.

2. Social benefits: environmental protection benefits and safety benefits can be obtained.

23. What is the quality performance of Sanfu cyanide free alkali copper technology in the manufacturing of sanitary zinc alloy parts?

Answer: according to the mass production results of existing sanitary ware manufacturing enterprises, the quality performance of Sanfu cyanide free alkali copper technology in the manufacturing of sanitary ware zinc alloy parts is not lower than that of cyanide copper plating process.

24. What is the reliability of coating adhesion of cyanide free alkali copper on zinc alloy parts?

Answer: the coating adhesion performance of cyanide free alkali copper on zinc alloy is equivalent to that of cyanide copper plating. Tested in a leading sanitary ware manufacturing enterprise, it can meet the baking requirement of 150 ℃.

25. What are the main factors affecting the plating quality when cyanide free alkali copper is applied to zinc alloy parts?

Answer: blank quality of zinc alloy parts; Pretreatment process control; Cyanide free alkali copper process management.

26. What is the difference between the application process of cyanide free alkali copper on zinc alloy parts and the traditional process?

Answer: there are only 7 processes in the cyanide free alkali copper process from prepreg to bright copper plating; The traditional process uses cyanidation copper plating + pyrophosphate copper plating, and 15 processes are required from prepreg to bright copper plating. Compared with the traditional process, the cyanogen free alkali copper process reduces 8 processes.

27. What is the replacement ability of cyanide free alkaline copper plating solution for iron, aluminum and zinc alloys?

Answer: according to the test, the cyanide free alkaline copper plating solution has no obvious replacement for iron and aluminum. Under the condition of impact plating, the zinc alloy has a little displacement.

28. What components does the cyanide free alkaline copper plating solution contain?

Answer: including: sf-638cu cylinder opening agent, sf-638e accelerator, sf-638ph regulator, potassium carbonate and other components.

29. What are the functions of the components in the cyanide free alkaline copper plating solution# P # page title # e#

Answer: sf-638cu cylinder opening agent: it is used for cylinder opening and copper ion supplement, and also contains complexing agent and other plating solution balance components.

Sf-638e accelerator: used for daily addition, as accelerator for anodic dissolution and copper ion complexing agent.

Sf-638ph regulator: adjust the pH value of the tank liquid when necessary.

Potassium carbonate: the conductive salt in the plating solution, which is also a buffer to maintain the stability of the pH value of the plating solution.

30. Is the daily maintenance of cyanide free alkaline copper plating solution simple? What are the general items?

Answer: the daily maintenance of cyanide free alkaline copper plating solution is very simple. General items include: regularly measuring the pH value, copper ion concentration and agent E concentration of the plating solution; Clean the anode regularly; Timely and sufficient supplement of agent E; Continuous activated carbon adsorption, etc.

31. What are the requirements of cyanide free alkali copper process for anode?

Answer: oxygen free electrolytic copper must be selected, and the oxygen content is less than 10ppm.

32. What is the general cathode current density of the cyanide free alkali copper process?

Answer: 1). The current density applied on iron parts, aluminum alloy parts and brass parts is 0.5-2.5asd (hanging plating) and 1.0asd (barrel plating).

2）。 The current density applied on zinc alloy parts is 0.5-2.5asd (pre plating tank) and 0.8-1.5asd (thickening plating).

33. Does the cyanide free alkaline copper plating solution need to be heated?

Answer: Yes. Taking the application on zinc alloy parts as an example, the temperature of the pre plating bath is usually 30-40 ℃, and the temperature of the thickened plating bath is usually 50-60 ℃.

34. What are the requirements for filtration of cyanide free alkaline copper plating solution?

Answer: paper pressure plate filter shall be used, with 5-6 cycles / hour controlled, and 5um filter element shall be selected.

35. Does the cyanide free alkali copper need air stirring?

Answer: low pressure, large capacity and powerful air agitation is required.

36. Is it necessary to use charged lower tank for cyanide free alkali copper?

Answer: the impact plating of zinc alloy parts must be carried out with electricity. There is no mandatory requirement for other applications.

37. What impurities will affect the cyanide free alkaline copper plating solution?

Answer: the content of lead, iron, silver, zinc, cyanide and organic matter in the plating solution exceeds the standard, which will affect the quality of the coating.

Source:Jiangmen xinsida Chemical Trade Co., Ltd

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