Cold-rolled color coating production line .3.1 use high-quality substrate!No matter what kind of coating technology is used, the technical requirements on the substrate are getting higher and higher. Most steel base color plates require flat zinc flowers, zero zinc, hot-dip galvanized steel coil...Send InquiryChat Now
.3.1 use high-quality substrate!No matter what kind of coating technology is used, the technical requirements on the substrate are getting higher and higher. Most steel base color plates require flat zinc flowers, zero zinc, hot-dip galvanized steel coil or electric-galvanized steel coil. Cold rolled coil is used as the base plate of laminated film color coating, and stainless steel is used as the base plate of some high-grade products. No matter what kind of substrate is used, there are high requirements for its surface, shape and size precision.3.2 improve the pretreatment processPretreatment of the substrate and the coating more closely cooperate, adopt the new pretreatment process system, can increase the stability of liquid pretreatment, increase, caitu and resistance to corrosion can be flexible, can reduce environmental pollution at the same time. In particular, some countries have clearly stipulated that pretreatment solution containing Cy"6 is not allowed to be used, and they have changed to Cr" or other pretreatment solution. Although the price of such pretreatment solution is slightly higher (about 20% higher), it is not allowed to use pretreatment solution containing Cy"6.Protection is very beneficial and reduces the cost of environmental protection3.3 pay attention to the development of new coatings,Super color reproducibility can be obtained by improving coating systems such as polyester, polyvinylidene fluoride (PVDF) and plastic sol.Better anti-wood exterior line, anti-so, anti-pollution; Improve corrosion resistance and scratch resistance to obtain super environmental corrosion resistance; Shorten the curing time of coating and reduce the curing temperature of coating: develop functional coatings such as fireproofing, waterproofing, mould-proofing and insect-proofing.3.4 new roller coating machineThe coating machine is the key equipment of the roller coating process. The color painting unit with high output is usually equipped with two sets of finishing machines to shorten the downtime caused by changing the coating and several rolls. Has now developed a new coating machine: the characteristics of double coating head fine coating machine, namely two coating head under the arrangement, and USES the liquid, pressure drive replacement coating roller, about 2 seconds to complete, in color, its cover an area of an area small, with one slide coater, it eliminated the roll system, between heavy clearance error, than traditional accumulation type slide coater coating with high precision, can implement optimal control for the thickness of the coating, can be a lot of savings, is expected. Some roller coating machines have also added doctor knife, in the production of high quality requirements for the use of color plates.In addition, a position pressure sensor is installed at both ends of the applicator roller neck, which can be adjusted by the wet film thickness measurement display and stepping motor. The drive system is located outside the painting room, no explosion-proof motor is required.