There are many ways of spraying and surface treatment of hardware, which can be selected according to different requirements of customers.
Surface treatment methods: pottery, phosphating, silane, passivation, cathodic electrophoresis, anodic electrophoresis, etc.
Spraying methods: painting, electrostatic spraying powder
Pretreatment methods: spray pretreatment, immersion pretreatment, immersion spray mixed pretreatment, immersion pretreatment, sand blasting
Different hardware parts, different process requirements, choose different ways of pretreatment and spraying.
Hardware such as zipper head, LED lampshade, surveillance camera shell, kettle shell, bread shell, metal mobile phone shell, etc. Most of them work by electrostatic spraying. The process flow is as follows:
Top – Electrostatic Precipitation – Preheating – DISC Electrostatic Spray Paint – Artificial Backfill – Leveling – Surface Dry – DISC Electrostatic Spray Paint – Artificial Backfill – Leveling – Surface Dry – Paint Curing – Cooling – Lower Parts
The above types of products can also be sprayed automatically by automatic spraying line, 50.8 pitch chain ground transportation.
Sheet metal hardware such as gate, electronic control box, logistics storage cabinet, telecommunication cabinet cabinet, environmental protection garbage bin, a few complex products are handheld hoist or automatic gantry type pre-treatment, most products are sprayed and immersed mixed pre-treatment, And then spray paint or powder production. The process flow is as follows:
Upper part – Hot water washing – Pre-degreasing – Main degreasing – Water washing 1 – Water washing 2 – Ceramization – Pure water washing 1 – Pure water washing 2-
Drainage Blowing-Dehydration Drying-Dust Removal-Preheating-Electrostatic Powder Spraying-Artificial Post-Supplement-Powder Curing-Cooling-Lower Parts
The above spraying methods and methods adopt different conveying modes, such as automatic gantry conveying, ground rail conveying, suspended chain conveying, accumulated chain conveying and so on. Similar to the transport of hardware, five tons of light suspension chain is used for transport, Five tons of heavy suspension chain for sheet metal, seven tons of suspension chain for transport, or die forging chain for transport.
The types of drying methods of hardware spraying paint and powder spraying production line are selected according to customers’requirements: natural direct-fired, natural gas indirect-fired, electric heating box, microcrystalline energy-saving board heating and other forms, combined with hot Air cycle curing products.