Surface Treatment of FRP Grille

When the glass fiber reinforced plastic grating products are just released from the oven, their surface is not smooth, level, clean and glossy, and they need to be processed to achieve the predetermined effect. The following is a detailed introduction of how to carry out surface treatment of FRP products.

Whether the quality of the molded glass fiber reinforced plastic in the domestic production of FRP grille is good or bad has a great relationship with the surface smoothness of the finished product. In addition to the quality of these materials, the important thing is the overall technical quality of the mold quality and service life. However, although the domestic production of glass fiber reinforced plastic mold is a good structure, but compared with other industrialized countries, the surface quality of the finished product is generally poor, in addition to the mold materials and mold production tools and equipment shortage, more importantly, most domestic manufacturers do not have some foreign factories attach great importance to these details, but mainly put the experience on the mold surface finish processing.

FRP mold surface treatment technology is introduced as follows: a new model and old mold renovation:

1, the first is a new model and old mold renovation, water grinding method-new mold or old mold renovation, with water sandpaper for water grinding, in the water grinding when the starting point of water sandpaper, usually from the 600, some users in order to improve work efficiency, from the 400th or even 400 onwards, with thicker water sandpaper directly polished, fast polishing. However, it is not known that the grit of coarse sandpaper after polishing of fine sandpaper indicates that the failure of non-polishing requires re-polishing. Then 600 to 800, 1000,1200,1500 (or 2000) were not spared step by step and failed, and the efforts made by the fine grinding treatment were wasted.

2. Polishing, polishing the surface of the mold, then polishing with an electric polishing machine, and then polishing the rough coating on the surface of the mold. When the polishing machine starts to run in a circular spiral, do not drain the mold in the past, and the main workload is rough polishing. So far, it is generally rough polishing requires at least two molds to be completed relatively smoothly. Then the rough wool of the new plate is roughly polished, and after fine polishing and fine polishing agent are added, the above operation is repeated. The thickness of the polishing agent is different from the wool plate, and each polishing machine should correspond to one.

3. Clean the mold. During the mold cleaning process, the sealant and release agent of the oil remaining from the polishing agent on the mold surface can be firmly attached to the mold, and scrubbed twice with clean water mold. The mold cleaning water wipes the mold surface with gauze, and then wipes it dry. The applicable mold cleaning water layer is fully volatilized and dried (about half an hour), and then lit with a clean dry cloth.

4, closed mold, in accordance with the glass fiber reinforced plastic products to complete the required requirements, usually after the third polishing is completed. However, only grinding the mold surface, there will be a lot of invisible holes. Under the precision requirements of glass fiber reinforced plastics, we must seal these tiny holes, so that the accuracy of glass fiber is greatly increased, in order to make the reinforced plastic to a higher level. The specific sealant is evenly spread on the surface of the mold with gauze, then dried (about 30-60 minutes), and then wiped smoothly with a clean dry cloth. The new mold, sealed four times, if the old mold refurbished, sealed both can.

5. Demoulding. During the operation, different production should be carried out according to different thicknesses of glass fiber reinforced plastic products, and different release agents should also be selected. Casting glass fiber reinforced plastic sanitary ware about 5mm thick glass fiber reinforced plastic products, glass curing heat, rather than using high temperature mold release wax or base thickness. Coat the concrete release wax with a proper amount of gauze release wax preservative film, and then squeeze the gauze evenly coated on the surface of the mold, which is not only uniform but also saves a large amount of scattered release wax, let it dry (30-60 minutes), and then hand clean gauze wrap or polishing machine to throw bright luster. New mold release wax 4-5 times before use. After demoulding a product, the last demoulding wax after each demoulding can be.

In order to improve the completion speed of glass fiber reinforced plastic products, improve work efficiency, demoulding, once coated with release agent, the smoothness of such products is very good and can also avoid repeated use of release wax cleaning by wax dirt pollution. Mold release wax or repeated use of clean mold release wax after long-term storage is prone to oxidation and unnecessary damage to glass fiber reinforced plastic products.