To manufacture colored artistic manhole covers, follow these steps:
Determine the generation process based on the required number of manhole covers:
When the demand exceeds 100, use the global ink-cast iron process, filling the pattern with resin;
When the demand is less, you can choose ductile iron base (or stainless steel, aluminum plate welded base), perform CNC relief processing on the surface pattern, and then fill with resin to make a combined manhole cover.
Preparatory Work
1. Determine the design pattern: Conceive and draw detailed patterns based on the usage scenario, cultural theme, etc. You can use computer drawing software for this purpose.
2. Prepare materials: High-quality manhole covers (make sure they meet the load-bearing requirements), environmentally friendly resin pigments, brushes, spray guns, protective paints, sandpaper, cleaning agents, masking tapes, etc.
3. Tools: Prepare various-sized syringes, brushes, rollers, spray gun equipment, etc. as painting tools.
Production Process
1. Cover Plate Treatment: Thoroughly clean the surface of the cover plate with a cleaner to remove oil stains, dust and other impurities. Then, gently sand it with sandpaper to enhance the adhesion of the paint.
2. Pattern Drawing: Print out the designed pattern and stick the outline of the pattern onto the cover plate with masking tape, or simply sketch it lightly with a pencil. Then, fill and draw the pattern in order from light to dark and from background to main body using the paint. You can use an injection gun or a spray gun to create uniform colors, and use a brush to depict details.
3. Apply Protective Paint: After the paint is completely dry, evenly apply a layer of protective paint to enhance the wear resistance and weather resistance of the pattern.
Post-maintenance
Regularly inspect the surface of the manhole covers. If any wear or fading is found, clean them promptly and repair the color.