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Manufacturing process of corroded metal signs:
1) Blanking: According to the size required by the drawing (page size), plus a burr of no less than 5mm on all sides. The 720 type foot-operated shearing machine is used for shearing, which requires a smooth surface and no margins around it.
2) Surface treatment of metal corrosion signs:
⑴Mechanical polishing: Use a 2.2-4 kilowatt polishing machine to mechanically polish the wool. The cloth wheel uses a 300-350 motor with a speed of 2000-3000 revolutions/min.
(2) Alkali treatment: Boil the metal plate with 10-15% sodium hydroxide in an aqueous solution at 65-85°C for 10-30 seconds, then wash it with clean water and immerse it in a 5% bivalent acid aqueous solution. ⑶ Powder treatment method: Use a flat brush to dip the old powder (double powder) to scrub the ears with a uniform cross method until the stain is removed or the oxygen skin is removed, and then sealed with 5% potassium dichromate aqueous solution .
⑷ Wire-drawing treatment method: use mechanical or manual wire-drawing method to wire-draw the metal surface to achieve the metal surface regeneration effect. Metal screen printing signs refer to the use of resin inks, screen printing on the board surface after pretreatment, and then performing processes such as gloss protection and laminating to make various exquisite color screen printing metal signs.
Metal screen printing sign production technology is an aspect of the application of screen printing technology. All kinds of silk-screened signs have been widely used in the electronics industry and household appliances products, especially after the use of new decoration technology on the surface of various signs, it is presented in exquisite and elegant form with many colorful decorative effects. In front of it, the value and competitiveness of commodities have been improved. In the production process of metal signs, the decisive role is the process technology and printing key points of the screen printing plate and the pretreatment of the substrate, and the selection of screen printing ink. The thermal transfer metal sign is a special panel generated by the surface treatment process of the metal sheet, and then the color picture you designed is printed on the transfer paper by inkjet printing, and it is reversed to the metal plate by heating. Made of metal signs.
1) Blanking: According to the size required by the drawing (page size), plus a burr of no less than 5mm on all sides. The 720 type foot-operated shearing machine is used for shearing, which requires a smooth surface and no margins around it.
2) Surface treatment of metal corrosion signs:
⑴Mechanical polishing: Use a 2.2-4 kilowatt polishing machine to mechanically polish the wool. The cloth wheel uses a 300-350 motor with a speed of 2000-3000 revolutions/min.
(2) Alkali treatment: Boil the metal plate with 10-15% sodium hydroxide in an aqueous solution at 65-85°C for 10-30 seconds, then wash it with clean water and immerse it in a 5% bivalent acid aqueous solution. ⑶ Powder treatment method: Use a flat brush to dip the old powder (double powder) to scrub the ears with a uniform cross method until the stain is removed or the oxygen skin is removed, and then sealed with 5% potassium dichromate aqueous solution .
⑷ Wire-drawing treatment method: use mechanical or manual wire-drawing method to wire-draw the metal surface to achieve the metal surface regeneration effect. Metal screen printing signs refer to the use of resin inks, screen printing on the board surface after pretreatment, and then performing processes such as gloss protection and laminating to make various exquisite color screen printing metal signs.
Metal screen printing sign production technology is an aspect of the application of screen printing technology. All kinds of silk-screened signs have been widely used in the electronics industry and household appliances products, especially after the use of new decoration technology on the surface of various signs, it is presented in exquisite and elegant form with many colorful decorative effects. In front of it, the value and competitiveness of commodities have been improved. In the production process of metal signs, the decisive role is the process technology and printing key points of the screen printing plate and the pretreatment of the substrate, and the selection of screen printing ink. The thermal transfer metal sign is a special panel generated by the surface treatment process of the metal sheet, and then the color picture you designed is printed on the transfer paper by inkjet printing, and it is reversed to the metal plate by heating. Made of metal signs.
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