Chemical Manufacturing Industry Specification of the People's Republic of China (HG/T3668-2009· Replace HG/T3668-2000): Zinc-Rich Topcoat Replace HIG/T3668-2000 Zinc-Rich Primer.
The key technical differences between this specification and HG/T3668-2000 are as follows: -- It improves the classification of equipment according to the depth of zinc composition of metal materials in non-volatile components; -- The regulations on "adhesion force" and "relative density" have been improved.
Detection of inorganic zinc coating curing degree steps: inorganic magnesium zinc chloride anticorrosive coating curing with the help of air humidity and temperature.
At 20℃ (68℉) and RH65%-75%, the curing time of the traditional inorganic magnesium zinc chloride anticorrosion coating must be 24~72h, and the adjusted curing time is 16~24h. Therefore, the curing time of the products from different manufacturers is different, so pay attention to the product introduction during the construction.
Under low temperature and ambient humidity conditions, the curing time of the coating will be increased.
The air humidity should be above 65%, and the minimum temperature can be as low as -10℃ (14℉).
Cold water spraying can deal with curing problems at low ambient humidity.
2~4h after the construction of the project can spray cold water to maintain the car paint wet, to help solidify.
For the detection of inorganic magnesium chloride and zinc paint layer curing, the standard method is the MEK test method. According to ASTM4725, cream pure cotton cloth is sprayed with MEK test reagent and scrubbed 50 times. If there is no or only very slight fading, it indicates that curing has been carried out.
How to detect the curing degree of inorganic zinc coating? Method flow!
Inorganic zinc coating is a kind of decoration material with strong protective performance, but some product quality does not pass, so we need to determine the quality after the detection, then how to detect the curing degree of inorganic zinc coating? The following powder coating powder manufacturer to teach you the specific method process.
Zinc-rich coating has a good maintenance of the actual effect, coupled with the coating operation mode than galvanized processing technology enterprises, strong adaptability, so the application standard is very common. Zinc-rich coating usually refers to the zinc powder composition is higher, the zinc powder composition in the film is above 85% coating. Because zinc electrode potential is negative than iron, zinc powder in the coating is high, zinc powder particles touch each other and closely adhere to the steel, zinc as cathodic protection, so that steel maintenance. In addition, inorganic zinc-rich coating also has an obvious shield off the actual effect, with physical isolation. This gives zinc-rich coatings excellent corrosion resistance.
Detection of inorganic zinc coating curing degree: there is no requirement in the national standard (GB), but now the authoritative detection of epoxy resin zinc-rich finish, generally refer to the national standard: HG/T3668-2009 zinc-rich finish.
The actual test index values and test methods for epoxy and inorganic Zinc-rich finishes are required in this specification.
Chemical Manufacturing Industry Specification of the People's Republic of China (HG/T3668-2009· Replace HG/T3668-2000): Zinc-Rich Topcoat Replace HIG/T3668-2000 Zinc-Rich Primer.
The key technical differences between this specification and HG/T3668-2000 are as follows: -- It improves the classification of equipment according to the depth of zinc composition of metal materials in non-volatile components; -- The regulations on "adhesion force" and "relative density" have been improved.
Detection of inorganic zinc coating curing degree steps: inorganic magnesium zinc chloride anticorrosive coating curing with the help of air humidity and temperature.
At 20℃ (68℉) and RH65%-75%, the curing time of the traditional inorganic magnesium zinc chloride anticorrosion coating must be 24~72h, and the adjusted curing time is 16~24h. Therefore, the curing time of the products from different manufacturers is different, so pay attention to the product introduction during the construction.
Under low temperature and ambient humidity conditions, the curing time of the coating will be increased.
The air humidity should be above 65%, and the minimum temperature can be as low as -10℃ (14℉).
Cold water spraying can deal with curing problems at low ambient humidity.
2~4h after the construction of the project can spray cold water to maintain the car paint wet, to help solidify.
For the detection of inorganic magnesium chloride and zinc paint layer curing, the standard method is the MEK test method. According to ASTM4725, cream pure cotton cloth is sprayed with MEK test reagent and scrubbed 50 times. If there is no or only very slight fading, it indicates that curing has been carried out.
Chemical Manufacturing Industry Specification of the People's Republic of China (HG/T3668-2009· Replace HG/T3668-2000): Zinc-Rich Topcoat Replace HIG/T3668-2000 Zinc-Rich Primer.
The key technical differences between this specification and HG/T3668-2000 are as follows: -- It improves the classification of equipment according to the depth of zinc composition of metal materials in non-volatile components; -- The regulations on "adhesion force" and "relative density" have been improved.
Detection of inorganic zinc coating curing degree steps: inorganic magnesium zinc chloride anticorrosive coating curing with the help of air humidity and temperature.
At 20℃ (68℉) and RH65%-75%, the curing time of the traditional inorganic magnesium zinc chloride anticorrosion coating must be 24~72h, and the adjusted curing time is 16~24h. Therefore, the curing time of the products from different manufacturers is different, so pay attention to the product introduction during the construction.
Under low temperature and ambient humidity conditions, the curing time of the coating will be increased.
The air humidity should be above 65%, and the minimum temperature can be as low as -10℃ (14℉).
Cold water spraying can deal with curing problems at low ambient humidity.
2~4h after the construction of the project can spray cold water to maintain the car paint wet, to help solidify.
For the detection of inorganic magnesium chloride and zinc paint layer curing, the standard method is the MEK test method. According to ASTM4725, cream pure cotton cloth is sprayed with MEK test reagent and scrubbed 50 times. If there is no or only very slight fading, it indicates that curing has been carried out.