CN105750174A - Paint drying technique - Google Patents

Abstract

The invention discloses a paint drying technique. The paint drying technique includes the following steps: 1) removing oil for 20 minutes; 2) removing rust for 10 minutes; 3) performing washing with water for 2-3 minutes, and using clean water to perform washing to avoid pollution of solution in the previous process to the next process, wherein the clean water must be following; 4) performing neutralizing for 2-3 minutes; 5) performing surface adjustment for 2-3 minutes, activating the surface based on parkerising; 6) performing phosphorization for 15 minutes; and 7) performing drying, wherein the treatment process is substantially performed in a water tank, each process has specific time, and painting is prepared after water is dried.

Description

A kind of baking finish process

Technical field

The present invention relates to a kind of baking finish process.

Background technology

Current baking finish process is more complicated, also without unified specification, it does not have unified standard, and the quality causing production is uneven, and a lot of operations that repeat also make under production efficiency, increases the work burden of workman, makes the competitiveness of product in market not high simultaneously.For some operators just entered a profession, it does not have a clear and definite method technique, cause, when operation, mistakes and omissions often occur, in some instances it may even be possible to cause serious consequence.Summary of the invention

Because the drawbacks described above of prior art, the technical problem to be solved is to provide a kind of baking finish process, and this baking finish process method is simple, can improve baking vanish efficiency, and be not easy to come off.

For achieving the above object, the invention provides a kind of baking finish process, it is characterised in that comprise the steps,

1) oil removing 20 minutes: mainly have mineral oil, lubricating oil, animal and plant oils and fats, such as operation with handling process in hands touch wait oils and fats make the overwhelming majority coating adhesive force degradation, and affect the dry of them, also the hardness and the glossiness that make coating reduce, the greasy dirt above workpiece is removed with aqueous slkali, main alkali is NAOH(sodium hydroxide), NAHCO3(sodium bicarbonate) etc. mix；It is commercially available special skimmed milk, is then configured to aqueous solution, the saponification of soap；

2) rust cleaning 10 minutes: yellow rust can promote that corrosion product spreads under coating, coating is made to lose shielding and moisture impermeability, the earlier period damage of coating and metal can be caused under hot and humid condition, loose yellow rust, poor adhesive force, can come off together with coating, the method of rust cleaning is a lot, such as soda solution grouting, acid solution method, Mechanical Method, electrolysis etc., commonly soda solution grouting, the oxide skin of surface of the work is removed with chemical solution, rusty stain etc., it is usually with sulphuric acid, also useful oxalic acid, also can be aided with ultrasonic waves for cleaning, the nonessential process of this procedure, see the rusting rate of materials and parts；

3) washing 2-3 minute: rinsing with clear water, in order to avoid the contaminated aqueous solution in previous operation is to subsequent processing, clear water must be movable；

4) neutralize 2-3 minute: the abbreviation that surface adjusts: remove alkali or the acid of excess surface in rust operation with acid or aqueous slkali, adjust acid-base value and arrive neutrality as far as possible, be i.e. pH value=7 effect: accelerate phosphatization speed, the crystalline temperature of refinement phosphatization, increase the crystalline temperature of phosphatization；

5) table is adjusted 2-3 minute: play surface active, makees basis for phosphatization；

6) phosphatization 15 minutes: phosphatization is the key link of Coating Pretreatment, with phosphoric acid formula manganese, the orthophosphate solution of zinc cadmium processes metal works, make one layer of insoluble phosphate protecting film of formation on the surface of the workpiece, the phosphating coat formed has the compact texture of tiny holes, increase surface of the work to amass, the area of coating layer touch can be increased, make between phosphating coat and coating, to produce favourable interpenetrating, it is greatly improved the organic coating adhesive force to workpiece, the method that phosphatization is commonly used is divided into 70-90 ° of high temperature phosphorization by treatment temperature, 50-70 ° of middle temperature phosphating, 20-30 ° of normal temperature phosphating, typically by normal temperature phosphating, phosphating coat is usually black；

7) dry: journey processed above is substantially and carries out in the sink, and each operation has time of regulation, after drying moisture, be ready for japanning.

The invention has the beneficial effects as follows: present invention process method is simple, can improve baking vanish efficiency, and be not easy to come off.

Detailed description of the invention technical scheme disclosed by the invention is a kind of baking finish process, it is characterised in that comprise the steps,

1) oil removing 20 minutes: mainly have mineral oil, lubricating oil, animal and plant oils and fats, such as operation with handling process in hands touch wait oils and fats make the overwhelming majority coating adhesive force degradation, and affect the dry of them, also the hardness and the glossiness that make coating reduce, the greasy dirt above workpiece is removed with aqueous slkali, main alkali is NAOH(sodium hydroxide), NAHCO3(sodium bicarbonate) etc. mix；It is commercially available special skimmed milk, is then configured to aqueous solution, the saponification of soap；

2) rust cleaning 10 minutes: yellow rust can promote that corrosion product spreads under coating, coating is made to lose shielding and moisture impermeability, the earlier period damage of coating and metal can be caused under hot and humid condition, loose yellow rust, poor adhesive force, can come off together with coating, the method of rust cleaning is a lot, such as soda solution grouting, acid solution method, Mechanical Method, electrolysis etc., commonly soda solution grouting, the oxide skin of surface of the work is removed with chemical solution, rusty stain etc., it is usually with sulphuric acid, also useful oxalic acid, also can be aided with ultrasonic waves for cleaning, the nonessential process of this procedure, see the rusting rate of materials and parts；

3) washing 2-3 minute: rinsing with clear water, in order to avoid the contaminated aqueous solution in previous operation is to subsequent processing, clear water must be movable；

4) neutralize 2-3 minute: the abbreviation that surface adjusts: remove alkali or the acid of excess surface in rust operation with acid or aqueous slkali, adjust acid-base value and arrive neutrality as far as possible, be i.e. pH value=7 effect: accelerate phosphatization speed, the crystalline temperature of refinement phosphatization, increase the crystalline temperature of phosphatization；

5) table is adjusted 2-3 minute: play surface active, makees basis for phosphatization；

6) phosphatization 15 minutes: phosphatization is the key link of Coating Pretreatment, with phosphoric acid formula manganese, the orthophosphate solution of zinc cadmium processes metal works, make one layer of insoluble phosphate protecting film of formation on the surface of the workpiece, the phosphating coat formed has the compact texture of tiny holes, increase surface of the work to amass, the area of coating layer touch can be increased, make between phosphating coat and coating, to produce favourable interpenetrating, it is greatly improved the organic coating adhesive force to workpiece, the method that phosphatization is commonly used is divided into 70-90 ° of high temperature phosphorization by treatment temperature, 50-70 ° of middle temperature phosphating, 20-30 ° of normal temperature phosphating, typically by normal temperature phosphating, phosphating coat is usually black；

7) dry: journey processed above is substantially and carries out in the sink, and each operation has time of regulation, after drying moisture, be ready for japanning.

Present invention process method is simple, can improve baking vanish efficiency, and be not easy to come off.The method technique is simple, eliminates a lot of repeatability operation, improves work efficiency.

The preferred embodiment of the present invention described in detail above.Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to the design of the present invention without creative work.Therefore, all technical staff in the art, all should in the protection domain being defined in the patent claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.

Claims (1)

1. a baking finish process, it is characterised in that comprise the steps,

1) oil removing 20 minutes: mainly have mineral oil, lubricating oil, animal and plant oils and fats, such as operation with handling process in hands touch wait oils and fats make the overwhelming majority coating adhesive force degradation, and affect the dry of them, also the hardness and the glossiness that make coating reduce, the greasy dirt above workpiece is removed with aqueous slkali, main alkali is NAOH(sodium hydroxide), NAHCO3(sodium bicarbonate) etc. mix；It is commercially available special skimmed milk, is then configured to aqueous solution, the saponification of soap；

2) rust cleaning 10 minutes: yellow rust can promote that corrosion product spreads under coating, coating is made to lose shielding and moisture impermeability, the earlier period damage of coating and metal can be caused under hot and humid condition, loose yellow rust, poor adhesive force, can come off together with coating, the method of rust cleaning is a lot, such as soda solution grouting, acid solution method, Mechanical Method, electrolysis etc., commonly soda solution grouting, the oxide skin of surface of the work is removed with chemical solution, rusty stain etc., it is usually with sulphuric acid, also useful oxalic acid, also can be aided with ultrasonic waves for cleaning, the nonessential process of this procedure, see the rusting rate of materials and parts；

3) washing 2-3 minute: rinsing with clear water, in order to avoid the contaminated aqueous solution in previous operation is to subsequent processing, clear water must be movable；

4) neutralize 2-3 minute: the abbreviation that surface adjusts: remove alkali or the acid of excess surface in rust operation with acid or aqueous slkali, adjust acid-base value and arrive neutrality as far as possible, be i.e. pH value=7 effect: accelerate phosphatization speed, the crystalline temperature of refinement phosphatization, increase the crystalline temperature of phosphatization；

5) table is adjusted 2-3 minute: play surface active, makees basis for phosphatization；

6) phosphatization 15 minutes: phosphatization is the key link of Coating Pretreatment, with phosphoric acid formula manganese, the orthophosphate solution of zinc cadmium processes metal works, make one layer of insoluble phosphate protecting film of formation on the surface of the workpiece, the phosphating coat formed has the compact texture of tiny holes, increase surface of the work to amass, the area of coating layer touch can be increased, make between phosphating coat and coating, to produce favourable interpenetrating, it is greatly improved the organic coating adhesive force to workpiece, the method that phosphatization is commonly used is divided into 70-90 ° of high temperature phosphorization by treatment temperature, 50-70 ° of middle temperature phosphating, 20-30 ° of normal temperature phosphating, typically by normal temperature phosphating, phosphating coat is usually black；

7) dry: journey processed above is substantially and carries out in the sink, and each operation has time of regulation, after drying moisture, be ready for japanning.