L & L Automation » Powder Coating
Our powder coating process is semi-Automated.
Once the workpiece manufacturing is completed, removal of oily deposits from the workpiece is done using an acidic solution, after which the workpiece is allowed to air dry on a mono rail making its way to the sand blasting bay where the remainder of scaling and rust are removed.
The workpiece then undergoes a 5-step process: The workpiece is –
Step 1: Submerged in a low temperature Alkaline soak cleaner for a pre-determined time at a specific temperature to remove oils and carbonaceous deposits on the material;
Step 2: Rinsed in clean water;
Step 3: Submerged in a liquid Iron Phosphate solution for a pre-determined time at a specific temperature to produce a uniform coating to increase corrosion resistance;
Step 4: Rinsed in clean water;
Step 5: Submerged in a chrome free passivation solution, once more for a pre-determined time at a specific temperature to seal the pores of the remaining phosphating in order to increase the corrosion and humidity resistance.
Finally, the workpiece is air dried, on the mono rail, making its way to the powder coating spray bay where after the powder coated workpiece will be transferred to the temperature-controlled oven in which it is cured for a pre-determined time at specific temperatures.