Power coating Aluminum alloy profile for aluminum alloy sliding
windows and doors
Product Description
| Product | Power coating Aluminum alloy profile for aluminum alloy sliding
windows and doors |
| Material | Alloy 6060, 6061, 6063, etc. |
| temper | T5, T6,etc |
| Color | Different colors available (black, blue, green, champagne, bronze,
golden, vermillion, etc.) |
| Surface treatment | Mill finish, anodized, electrophoretic coating, powder coating,
thermal break, wood grain/wood-in-shift, etc. |
| Mould | Based on your drawing or use our mould free |
| Sample time | Usual practice: within 15 working days against payment |
| Usages | Windows, doors, curtain wall, solar panel, LED panel, heat sink,
industry, etc. |
| Certified | ISO9001-2008 Quality System, |
The process control elements are described as follows:
1, degreasing
degreasing mechanism is through the degreasing agent for all kinds
of oil saponification, solubilization, wetting, dispersing,
emulsifying, from, so that the oil from the surface into soluble
substances or by emulsification, dispersion and uniform stability
lies within the bath. The evaluation of the non-degreasing quality
is mainly the surface of the workpiece after degreasing the surface
of the workpiece, the surface of the workpiece is not visible, the
surface of the surface should be completely wetted by water. The
quality of degreasing depends mainly on the free alkalinity, the
temperature of the degreasing liquid, the processing time, the
mechanical function and the oil content of the degreasing fluid.
(1) free alkalinity (FAL)
The concentration of degreasing agent is appropriate to ensure
optimum results. In general, only the free alkalinity of the
degreasing liquid is detected, the FAL is too low and the oil
effect is relatively poor. FAL is too high, not only to waste
material, but also to increase the burden on the backwash, and the
heavier people will also pollute the post-ordered form and
phosphatize.
(2) the temperature of the degreasing liquid
Any degreasing fluid has the optimum degreasing temperature,
temperature is lower than the process requirement, and the
non-degreasing function is not sufficient. Overtemperature, not
only increases energy consumption, but also causes side effects.
Such as degreasing agent evaporation too fast, the workpiece fast
out of the bath with the surface dry, rust and easy create
artifacts return, alkali spot, oxidation and other ills, affect the
quality of process after phosphating. Automatic temperature control
also needs to be checked regularly.
(3) processing time
The degreasing fluid must be fully in contact with the oil on the
workpiece and sufficient contact reaction time to ensure a good
degreasing effect. But the length of skim time increases the blunt
effect of the surface of the workpiece, affecting the formation of
the phosphating membrane.
(4) mechanical effect
In the process of degreasing, the use of pump circulation or the
movement of the workpiece by means of mechanical action can enhance
the effect of oil removal and shorten the time of washing and
cleaning. The speed of spray degreasing is more than 10 times
faster than the rate of degreasing degreasing.
(5) oil content of degreased fluid:
As the slot liquid recycling, oil content in the bath will
increase, when reach a certain proportion, degreasing effect of
degreasing agent and cleaning efficiency will be significantly
lower, even bath by adding the drug to maintain high concentration,
the purity of the processed workpiece surface is still not
improved. The degreased degreased liquid must be replaced
completely. Product production is usually changed according to the
time of the use of the tank and the processing workload.
