停止侵害阳极氧化工艺流程翻译

2021年1月19日发(作者：westwood)

阳极氧化工艺流程翻译


Process flow and raw materials of aluminum and
aluminum alloy anodic oxidation tinting
Procedure
specification
on
aluminum
and
aluminum
alloy
anodic
oxidation
tinting
1.

Procedure specification(line drawing)
Substrate
→

Mounted
hanging
→

Degreasing
→

Alkaline
etching
oxidation
→

Neutralization
coloring
→

Anodic
→

Electrolytic
→

Sealing
→

Electrophoretic
coating
→

Curing
→

Unloading

packaging
→

Warehousing
2. Mounted hanging
:
2.1 preparations before mounted hanging.
2.1.1 Check the conductive parts like conductive
beams
and
bars.
They
should
be
regularly
polished, cleaned or repaired.
2.1.2
Get
ready
conductivity
of
aluminum
and
aluminum wire.
2.1.3
Check
the
pneumatic
tools
and
related
equipment.
2.1.4
Check
whether
or
not
requirements
like
length, count, color, thickness on the flow paper
or
production
task
list
are
consistent
with
the
order drawing and actual materials.
2.1.5
Depending
on
the
specifications
(size
of

circumscribed circle, external surface area, etc.)
to determine the count and space. To control the
pigment
spacing
about
1.2
times
than
the
horizontal width of the material shaped, and the
white
material
spacing
about
1
time
than
the
width.
2.1.6
Choose
the
appropriate
rack,
and
ensure
that
hook
number
of
negative
and
positive
hangers is the same with the count of materials
shaped.
2.2 Mounted hanging:
2.2.1
When
hanging,
fix
the
topside
one
first,
and then the bottom one, and then arrange the
remaining sections in the middle, and tighten the
screws.
2.2.2
Before
hanging,
placing
one
aluminum
sheet between the material and aluminum screw
p
so
that
it
can
prevent
poor
conductivity
impacting
oxidation,
coloring
and
electrophoresis.
2.2.3 When hanging, it is not allowed to hang all
the materials in the lower or upper rack.

2.2.4 The hanged materials should recline more
than
14
degrees
in
order
to
facilitate
air
exhausting
in
electrophoresis
or
coloring,
and
reduce the air bubbles.
2.2.5
When
hanging,
considering
the
facing
of
the decorative surface and groove to prevent the
color shading, bubbles, pitting appearing in the
decorative surface.
2.2.6
Like
some
flexible
and
easily
deformed
materials, put one more rack or aluminum wire
in
the
middle
to
prevent
friction
between
the
materials
or touching
tank plate,
and
that
may
abrade or burn the surface.
2.2.7 When selecting vice-bar rack, the plug rod
is
preferred.
When
using
aluminum
banding,
they
must
be
evenly
spaced,
and
the
outcrops
should be less than 25mm.
2.2.8
Materials
with
great
disparity
of
cross-section
size
and
shape
are
prohibited
to
hang in the same row.
2.2.9
When
hanging
and
handling
equipment,
you
must
wear
clean
gloves,
gently
and
well

protecting the surface.
2.2.10
When
hanging
or
handling
equipment,
workers should strengthen self-examination and
cross- examination,
the
failure
materials
are
non-mounted, and take appropriate measures to
deal
with
the
surface
stained
with
oil
or
aluminum burrs

2.2.11
After
eliminating
unqualified
ones,
you
must make them up in time by order.
2.2.12 In hanging area, materials should not be
stored for too long time, to prevent corrosion of
the surface.
2.2.13
Filling
the
hanging
record
and
oxidation
process
card.
Accurately
calculating
and
fill
in
oxidation of each linked area, checking models,
count and color by orders at any time.
2.2.14
Do
a
good
job
in
shift
procedures
and
keep the work area clean.

3. Preparation before oxidized production units:
3.1
Checking
the
level
of
the
liquid
in
the
process
tank.
According
to
test
report
card,
to
adjust the concentration of the bath solution and

ensure
that
bath
solution
is
always
in
line
with
technical
requirements.
Workers
should
frequently sweep the dirt from the bath solution.
3.2
Checking
the
vehicle,
freezer,
rectifiers,
circulating
acid
pump,
water
pump,
transfer
cars,
furnace
and
other
equipment,
any
exception should be immediately solved.
3.3
Check
PH
(or
conductivity)
and
cleanliness
in
the
pure
water
washing
tank
and
running
water
washing
tank.
If
it
does
not
meet
the
technical
requirements,
workers
should
change
it and hydrating overflow.
3.4
Open
the
alkaline
etching,
hot
pure
water
tank,
sealing
the
steam
or
cooling
water
tank;
open
the
oxidation
tank,
coloring
tank
and
cooling system of electrophoresis tank to ensure
the uniformity of bath solution and temperature
complying with requirements.
3.5
Check
the
Roots
blowers,
exhaust
blowers
and
exhaust
fans.
Before
the
production,
they
should be opened.
3.6
Carefully
check
the
oxidation
process
card,

specifically

confirm
the
production
requirements, and prepare the color palette.
4.
General
requirements
for
oxidation
sets
operation:
4.1
It
is
not
allowed
to
hang
t
more
than
two
hangings
every
time.
And
keeping
a
certain
distance
between
the
two
hangings
to
prevent
collision between the materials.
4.2
When
materials
hung
into
and
hung
out
of
the bath solution, they must be inclined to 30°
.
4.3
Materials
falling
into
the
tank
must
be
removed
promptly
and
hung
up
in
rafts,
the
damage
ones
must
be
promptly
notified
to
group-to-order equipment to make them up.
4.4 In addition to alkaline etching and coloring,
the
sections
should
be
hung
out
after
the
bath
solution
drained
away
to
reduce
the
flow
of
waste and pollution.
4.5
When
the
hanging
materials
must
cross
other
sections,
the
transferring
ones
must
maintain
the
level
of
the
degree
to
reduce
the

flow
of
liquid
and
pollute
materials
and
conductive beam.
4.6
Each
process
should
be
promptly
fill
in
the
oxidation process cards, and sign them.

5. Degreasing:
5.1 Process Parameters
Composition of bath solution: acidic degreasing
agent 2 to 3%
Temperature: room temperature
Degreasing time: 1 ~ 3min
5.2 Operating requirements:
5.2.1
Check
process
card,
make
production
requirements
clear.
Materials
with
the
same
color,
same
model
and
same
order
or
similar
specification
should
be
suspended
into
the
degreasing tank simultaneously or preferentially,
so
that
it
can
facilitate
the
operation
the
post-procedure.
5.2.2
When
the
degreasing
is
finished,
the
materials
should
be
hung
out
of
the
tank,
preventing the sand from the surface.
5.2.3
After
degreasing,
the
surface
should
be

well- distributed
and
wet,
and
the
materials
should be washed by Level 2 water then turned
into the alkaline etching process.

6. Alkaline etching:
6.1 Process parameters:
Composition
of
bath
solution:
plain-surface
alkaline etching, sand-surface alkaline etching
NaOH: 40 ~ 50g / l 45 ~ 60g / l
Additives (NaOH): 1 / 12 ~ 1 / 15 1 / 6 1 / 8
Temperature: 40 ~ 45
℃

45 ~ 55
℃

Alkaline etching time: 1 ~ 3min 10 ~ 30min
6.2 Operating requirements:
6.2.1 When alkaline etching, the forced draught
blowers and exhaust fans should be opened.
6.2.2
When
alkaline
etching
is
finished,
materials should be hung out as soon as possible,
finishing shedding immediately and transferring
to
the
tank
washing,
so
that
it
can
prevent
straying marking from the surface.
6.2.3
Strictly
control
alkaline
etching
process
parameters,
to
ensure
uniform
quality
of
the
surface after alkaline etching.

6.2.4
Post- alkaline-etching
materials
must
be
washed by Level 2 overflow. The remaining
alkaline
liquid

should
be
fully
cleared
away,
so
that
the
raffinate can
’
t pollute other tanks.

7. Neutralization:
7.1 Process parameters:
Composition
of
bath
solution:
HNO3:
120
~
150g / l
Tank temperature: room temperature
Neutralizing time: 2 ~ 5min
7.2 Operating requirements:
7.2.1.
When
neutralizing,
the
materials
should
be
moved
up
and
down
and
anti-tilt,
fully
neutralizing
exhaust
liquor
in
the
hole
and
remove appearing dust.
7.2.2
Post-
neutralizing
materials
must
be
washed
by
Level
2
overflow,
and
turn
to
the
anodizing tank.
7.2.3
The
surface
quality
inspection
should
be
strengthened
to
check
the
surface
of
the
sand
surface
conditions,
mottling,
burrs,
welding

lines
and
other
surface
defects,
for
timely
processing, reworking.
7.2.4 Regularly check screws are loose or not, to
ensure good electrical conductivity.

8. Anodic oxidation:
8.1 process parameters:
Tank composition: H2SO4:150 ~ 180 g/l AL ion:
5 to 15 g/l
Tank temperature: 20
±

1
?

C
Oxidation voltage: 14 and 18 V
Current density: 130 ~ 150 A /
㎡

The
oxidized
time:
according
to
requirements
film thickness calculation.
8.2 Operating requirements:
8.2.1 Anodic oxidation must be open before:
(a) Rectifier cooling water.
(b)
Bath
circulation
cooling
system
(cooling
unit).
(c) Send the exhaust fan.
8.2.2
Anodic
oxidation
must
be
checked
in
advance:
conductive
copper
conducting
copper