3. Sealing Titanium (Golden) Colorant (Product No.: YC-01, YC-02)
YC-01 and YC-02 titanium colorant series are the traditional titanium products of the company. When activated with YC-02 and then treated with YC-01, the off-white coloring system turns golden. The colored aluminum materials appear wonderful, and they are also more liable to be decorated.

3.1 Process: pretreatment (emery and polishing treatment) — anode oxidation — YC-02 activation — YC-01 coloring — sealing (no electrophoresis treatment)

3.2 Technical Conditions and Technical Parameters:
3.2.1 Activation: YC-02: 10%(100g/1)
Time: 1-3min (depending on the colored depth)
Temperature: 25-35⁰C
3.2.2 Colorant YC-01: 10%(100g/1)
Voltage: 8-12V
Sulfuric Acid: 10-15g/1
Temperature: 23-26⁰C
Time: 3-5min (depending on the activation time and the colored depth)

3.3 Routine Control and Consumption:
3.3.1 The activating solution should be replenished according to the routine production and analysis result. The normal operation points have 9-10 points. About 8-10kg activating reagent (YC-02) is consumed for the treatment of 450m2 workpiece (about one ton), and the activation time affects the colored depth of workpiece.
3.3.2 Colorant assumption: About 2-2.5kg colorant is consumed for the treatment of 450m2 workpiece (about one ton of section bars).

3.4 Supplementary Operation:
According to the problems of some customers, such as the insufficiency of fixed function trough, the requirement of activation and coloring being carried out in the same trough when the workpiece needs tint coloring, and coloring without activation (only tint and medium color), the technical parameters for the trough are as follows:
Mixture: 15%(150g/1)

Temperature: 23-26⁰C
Voltage: 9-10V
Consumption: 12-15kg(450m2)
Operation points: 10-12
Determination of titanium salt concentration: 4-5g/1

3.5 Analysis Method: (with the use of 0.1 N_Na2S2O3 )

3.5.1 Determination of Activating Solution Trough Index:

3.5.1.1 Analysis method: Add 2ml of activating solution, and add 50ml of deionized water, then 3-5 drops of 0.1% bromophenol blue as indicator, and then titrate the solution with 0.1N NaOH standard solution till the end point (primrose yellow turns blue). The consumption volume of 0.1N NaOH standard solution is the trough index

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