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5) etching metal signs
???Corrode metal plate is also called etching plate. The main search using the mask, after etching process processing system to do three steps from the Braille metal plate or a concave metal plate. Corrode metal plate making process:
First: cutting: by drawing (layout size) in size, surrounded by more than plus not less than 5mm burrs. Shears with 720 foot-operated shears, the surface smooth, surrounded by non-Maori.
Second: metal corrosion signs Finish:
(1) mechanical polishing: polishing machine with 2.2-4 kW of mechanical polishing wool, cloth round use motor speed is generally 300-350 2000-3000 revolution / min.(2) alkali treatment: 10-15% aqueous solution of sodium hydroxide at 65-85 ℃ in the metal plate cook 10-30 seconds, and then washed with water, immersed in 5% of the weight of Ming acid aqueous solution.(3) powder processing method: using a flat brush dipped in old powder (double pink) version of the child will scrub uniform cross method, in addition to the effect until decontamination face, skin or remove oxygen, and then with a 5% aqueous solution of potassium dichromate Closed.(4) The drawing processing method: using mechanical or manual drawing methods were brushed metal plate surface treatment, metal surface regeneration to achieve the effect.
Stainless steel metal corrosion signs
6) metal flat sun signs Metal flat sun signs sun cards mainly use photosensitive way, the film which was dissolved in different colors to make it through the development of methods was significant in the metal plate, so as to achieve a metal plate with a descriptive sense of purpose. Here are a few we often come into contact with the metal flat plate concrete drying process and formula (flat sun signs, the process):
(1) material: wool size requirements are generally larger than the plate size (5mm or more), the board smooth, without potholes.(2) Pre-treatment: polishing - Several methods such as oxidation - drawing - treatment.(3) Water closed: will handle good board, through to oil, except after the film can not be quickly immersed in water and exposed to the air.(4) glue: glue configuration. Plastic: 200-230 grams of water: 1000ml, added photosensitizer (weight casein, ammonium) boiling water and cook for 2 hours to fully dissolve the glue, the temperature dropped to 30-50 ℃ 25-30 grams after glue evenly coated in metal plate, drying stand.(5) copy: You can use SB750 vacuum type machine photographic copy proofing, light 60-90cm time after 40-80 seconds to take, in warm water 1 minute into the color developing solution for staining.(6) Gloss: After fully dyed brand, dry it with a brush or spray gun painted with gloss paint (general paint brand with the eyes or free baking gloss paint).
??Metal flat sun signs are generally used for interior products, small household appliances and non adverse weather affected equipment. The advantage is plate-making process is simple, fast, timely delivery, defective rate and low fees. The disadvantage is that by the sun and rain, easy to fade, can not do outdoor signs.
??????Metal plate production process classification and everyone explain here, metal signs in all areas of modern society, the use of more and more widely used in electronic products, home appliances, machinery and consumer products, and other fields. Metal plate mainly in copper, iron, aluminum, zinc alloy, pewter and other raw materials for the foundation, made by stamping, casting, etching, printing, enamel, imitation enamel, paint and other craft.
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