Membrane switch manufacturers introduce the main role of the sign what

Metal signs factory introduced corrosion metal sign craft corrosion metal label is also called the etching label. Primary check through mask, etching processing 3 processed making of braille metal plates or concave word metal plates. Corrosion of metal processing technology - sign - - - - - - > metal sign factory introduces corrosion metal sign craft corrosion metal label is also called the etching label. Primary check through mask, etching processing 3 processed making of braille metal plates or concave word metal plates. Corrosion of metal sign process: 1) Blanking: according to the drawing requirements ( Page size) The size of the around with no less than 5 mm above the burrs. Cutting board with 720 type pedal plate shears, requirement surface level off, without margin. 2) Metal corrosion sign surface treatment: ( 1) Mechanical polishing: in 2. 2 - 4 kw polishing machine, mechanical polishing of woollen cloth round of 300 - use Motor speed generally 2000-350 3000 r/min. ( 2) Alkali treatment: with a 10 - Sodium hydroxide in 65-15% Will metal plate to boil 10-85 ℃ water solution For 30 seconds, and then remove with clean water, immersed in a 5% weight inscription acid in aqueous solution. ( 3) Powder processing method: use a flat brush dips in old pink, Double pink) Will board evenly brush all ears, cross the crossover to until to remove dirt, and removing the effect of oxygen skin, and then closed with 5% potassium dichromate solution. ( 4) Wire drawing processing method: use mechanical or manual drawing method, the metal plate wire drawing processing, metal surface in order to achieve regeneration effect. Metal sign factory metal protective method metal protective purposes, lies in the control of metal products caused by corrosion of metal material consumption, to prevent the destruction of the metal products, so as to extend its service life. Therefore, in addition to prevent metal corrosion, also contains a metal protection value, so called the protection of the metal. In order to achieve protection caused by the comprehensive methods and means are called protection technology. Metal protection method in addition to the correct selection of metal materials and reasonable design, can be mainly adopts the surface protection layer and electrochemical protection and corrosive medium, method.

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