Superbti
is a professional company supplying high performance titanium bars, wire,
plates, forgings, tubes and fasteners.
The
surface treatment of titanium and its application can be summarized from three
aspects:
1. The
surface treatment of craftsmen
Application
of titanium in the building roof, wall and other building materials, eyes,
watches and pendants and other accessories, used of the excellent corrosion
resistance of titanium, but also the requirements for the surface, bright
luster and fashionable sense of design and processing.
(1)
surface finishing
a.
grinding
b.
annealing plus Pickling - Surface tarnish / grey
c.
vacuum annealing + Pickling - glossy / dark grey
d. shot
peening ---- the surface of the plow
e.
dense stripe processing
f.
pattern embossing processing - processing surface embossed embossed pattern
g.
chemical etching - pattern
(2)
mirror finishing - titanium is a difficult material for mirror finishing.
a. soft
belt polishing: processing surface hardening layer, low efficiency
b.
chemical polishing: influencing factors: temperature, time and polishing
liquid.
c.
electrolytic polishing: anhydrous organic electrolyte has better electrolytic
polishing effect on titanium.
(3)
coloring
The
titanium surface originally for silver, in order to improve the design, can be
dyed and the color of stainless steel. Its main colors are bronze, red bronze,
sapphire blue, red wine, coffee red, titanium, jade green, black gold, rose
gold and so on.
a.
atmospheric oxidation method in heating in the atmosphere in the furnace, the
titanium oxide film formed on the surface and internal reflected light through
the film, light interference occurred in the titanium oxide film and interface
reflection of internal reflection and color. The utility model has the
advantages of low cost, poor color uniformity and poor reproducibility, and is
not suitable for decorations.
b.
anode oxidation process
c.
nitriding process
2.
Corrosion resistance surface treatment
Because
titanium has good corrosion resistance, generally do not further improve the
corrosion resistance of surface treatment, but in order to prevent corrosion of
titanium in susceptible to corrosion of hydrochloric acid, sulfuric acid and
other non oxidizing acid in aqueous solution, to prevent in the aqueous
solution of NaCl crevice corrosion and pitting corrosion, sometimes using
surface treatment method.
(1)
Atmospheric oxidation treatment
(2)
Precious metal coating
3.
Abrasion resistance surface treatment
The
disadvantage is that the poor wear resistance of titanium, the surface is easy
to produce defects such as pits, at present, is suitable for sliding mechanical
components.
(1) wet
coating
(2)
thermal diffusion method
(3)
surfacing
(4)
sputtering method
(5)
CVD, PCD, and PCVD methods
(6) ion
implantation
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