Hydrographics Control Points and Hints

Control Points and Hints

operation instructions
1.1Check the products from the last process step.return the off-
quality products to the last process.
1.2Material preparation1:the products must be well prepared before
water dipping .
1.3material preparation 2:a metal door may need to dip two times,
each with different pattern, so preparation had to be made on the door
for such purpose.
1.4take a metal door, which needs to be coated on double side with
different pattern, for example, the uncoated side should be close with
a nylon net.
1.5make a nylon closure:the closure is made of 300 mesh nylon net,
the size of the net is a little larger than the door dimensions, round
the net are attached (by sewing)with magnetic bars.
1.6Close the uncoated side of the door with above mentioned nylon
net.Note:The above measure is only an example to close the uncoated
area of a metal door, anyway you have to find a solution for your
particular products, use adhesive type to seal the uncoated area is
also simple and very popular.
1.7Fix the metal door to a jig frame, the jig frame,together with the
metal door, maybe hanging from the ceiling or an iron structure, the
jig frame must be lowered down below the water surface.try several
times until you are satisfactory with the dipping procedure.
1.8if the size of the products is very small, you have to arrange the
small pieces in the jig frame , fix the pieces tightly with fixtures
or clips attached to the jig frame,the pieces must fix tight not to
move during the dipping procedure.