TW593752B - Method of phosphate surface treatment on metal surface for subsequent coating - Google Patents

Abstract

A method of phosphate surface treatment on a metal surface for subsequent coating mainly comprises subjecting the surface of a metal material or article to a surface treatment (e.g. degreasing, electrolysis, etc.) for removing the impurities and grease, etc. on the surface thereof; subjecting the treated surface to a treatment using a phosphate solution with a specified composition in order to adhere a zinc phosphate layer on the surface of the metal; washing off residues on the surface with clean water; subjecting the surface of the metal with a solution formed by adding hot water into a surface adjustment agent in order to rapidly oxidizing and drying the metal surface; and dewatering the metal surface by a dewatering device for terminating the oxidation process on the metal surface and maintaining the surface at a dry state for a long period of time, thereby providing a condition suitable for conducting a surface coating procedure.

Description

593752 Case No. 92124335 Λ_η Revision V. Description of the invention < The method of the invention of the present invention, after processing, and table adjustments are beneficial to < Prior art related to painting or electricity in progress such as wire or surface treatment, edge, etc. The plating work with processing work is carried out during grease, cleaning, and metal material plating work. However, within the above-mentioned time, the surface coating (1) belongs to the Ming Department to provide its main specific ratio for surface coating > The key such as the latter screw, the gold work, the painting, the painting method, etc., therefore, the success on the surface, if the gold metal surface layer will have a technical field > For a metal surface dishate is A person who neutralizes a phosphate solution of a metal material or an object to make it difficult to quickly oxidize the loader. The metal surface is treated for section treatment, and it is already made of metal. Generally, the surfaces of metal nuts, etc. in the manufacturing process will be in the manufacturing process, so in the middle of each process, the metal surface is smooth and work. The electroplating work is carried out in an electrolytic solution without interruption, which can be carried out continuously. The metal surface will not be oxidized in the air quickly. The rate is very high, and there will be no defects. Dry metal surfaces on the metal surface When degreasing, the electrolytic surface will oxidize, and the phenomenon of shedding will become a bad treatment. After that, the surface will be dried and maintained. It can be coated with grease and electrolytically dried. In the dry state, the semi-finished product must be treated with oil All need to be dried to say that the gold stays too complete when electroplating. After the surface treatment, it is painted. In the next many years, it may be a material, and it is a long time. It is also a long time, plating, continuous products from the stage, such as surface quality, woolen surface, can be completed regardless of the solution can be completed. , Then 'in a short outfit, the way metal is known

Page 5 2004. 05.06.005 593752 Case No. 92124335_Year Month Amendment_ Five. Description of the invention (2) All metal materials or semi-finished products are surface-painted with phosphate to make a layer of phosphate metal adhere to the surface of the metal material Layer can keep the metal surface from oxidizing for a period of time, which is conducive to dry coating work. However, in the conventional phosphate treatment process, the phosphate solution used can only remain non-oxidizing for a short time, making Painting work has been unable to improve effectively. < Contents of the Invention > The first purpose of this creation is a method for coating a metal surface after phosphate treatment, which is mainly performed by degreasing and electrolytically treating a metal material with a phosphate solution. Adhesion of the surface metal layer is formed; and with the neutralization treatment of the surface conditioner, the metal surface can be kept in a dry and non-oxidized state, which is beneficial to dry coating workers on the metal surface. The second purpose of this creation is to provide a method for coating the metal surface after phosphate treatment. The main purpose is to treat the surface of the metal material with a special proportion of phosphate solution as a surface conditioner, so that the metal surface can be attached. The zinc phosphate layer is not oxidized for a long time, which can achieve the purpose of greatly reducing the defect rate for subsequent coating work. In order to make it easier for your reviewers to understand the process and advantages of the present invention, the attached drawings are described as follows: < Embodiment > A method for coating the metal surface after phosphate treatment of the present invention, in practice, An improvement is made on the surface treatment of metal materials to keep the metal surface dry and non-oxidized after the treatment. The following is a detailed description of each process in the implementation of the present invention. First, the metal material or semi-finished product is first put into a barrel containing a degreasing agent.

Page 6 2004.05.06.006 593752 __Case No. 92124335_ Year, month and year revision__ V. Description of the invention (3) For degreasing, the degreasing agent used is a P h value of 9 ~ 1 2 and a silicon ion content of 2 % Mixed solution, whose composition is [60% sodium metasilicate, 20% light alkali, 15% sodium tripolyphosphate, 5% surfactant], 5 ~ 2 at 60 ° C After 0 minutes of treatment, the grease on the metal surface is removed, and then rinsed with water to remove the degreasing agent on the metal surface. Second, the metal material is put into a solution containing a hydrochloric acid inhibitor. The hydrochloric acid inhibitor is CR. 〇SS — LINKEDA Μ IDE; use the hydrochloric acid in it to remove the residue on the metal surface; for example: rust or carbon deposits generated during heat treatment, immerse in HCL 15 ~ 32%, 5 ~ 20 minutes R T, the surface of the metal Residual protrusions should be removed, and then hydrochloric acid should be washed off the metal surface with water.

Next, an electrolytic treatment is performed. A direct current of 8 0 0 to 1 8 0 A is applied to the surface of the metal object and a solution containing 1% of stone sulphate and 5% to 10% of sodium oxide. Its composition is [50% Light alkali, 30% sodium metasilicate, 10% trisodium phosphate, 5% surfactant, 5% sodium tripolyphosphate] Do electrolysis for 5 ~ 20 minutes at 60 ° C, you can do it again Remove the grease, rust scale, carbon deposits, etc. on the surface of the metal object, and then remove the solution with water again. Neutralize with a table adjustment. The composition of the table adjustment is [10% sodium tripolyphosphate, 30% light alkali, 60% titanium oxide]. The acid solution remaining on the metal object can be neutralized by the table adjustment. To remove residual acid from the pores on the metal surface. Then the focus of this case is to use a special proportion of phosphate solution for surface coating treatment. The composition of the phosphate solution is [35% phosphoric acid, 2

Page 7 2004.05.06.007 593752 Case No. 92124335 _Ά Amendment V. Description of the invention (4) 0% Shi Xiao acid, 1 object enters the above acid layer, it is immersed in immersion in 3 5 hot water left on the metal surface agent 0% titanium oxide, all processes in which the surface of the metal is fast and clear during the process. The above-mentioned grease, residue and clean metal surface are smooth, and it is not easy to produce any rust. 5% zinc oxide powder, acid solution after rolling in solution and phosphoric acid time in minutes. The second step is neutralization process, 20% light inspection.] When adjusted, the gold can be dried before proceeding. After the next 1% nickel and 2, the thickness of the metal zinc layer can be optimized. The 'hot water retention surface has a final dehydration of 9% water], a phosphorus is formed on the metal surface, as shown in Figure 1, but then the remaining objects are rinsed with water and put into the table with the table and the ingredients. It is the best at 60 ° C. It has anti-rust function and can be treated. This treatment method can be completed. It can completely remove the acid of metal materials, etc., and then attach the surface with rapid oxidation and oil on the surface of the object. The pores on the metal surface remove the rusty zinc phosphate layer, so that when the project is not caused for a period of time, the coating can be maintained in a very common stage.

Page 8 2004.05.06.008 593752

Page 9 2004.05.06.009

Claims (1)

593752 ^ Sa -5. I: 'Book m case ¥ 92124335 amended' Hlf net supplement, ^ A method for coating the metal surface after phosphate treatment, which is mainly degreasing and degreasing metal materials or objects first. After the surface residue is removed with hydrochloric acid, the metal surface is then degreased and the residue is removed by an electrolytic process, and its characteristics are subsequently neutralized with a first table conditioner whose component is [ 10% sodium trimerate, 30% light test, 60% titanium oxide], and then immersed in a phosphate solution, the composition of the phosphate solution is [35% phosphoric acid, 20% nitric acid, 1 5 % Zinc oxide powder, 1% nickel, 29% water], after cleaning, add 60 ° C hot water to neutralize it with the second table conditioner, whose composition is [80% titanium oxide (20% light inspection), and finally use a dewatering machine to remove the moisture, so that the zinc phosphate layer attached to the metal surface is dried, and can be kept for a long time without oxidation. Page 10 2004.05.06.010