CN103540989A - Method of simultaneously oxidizing and coloring two alternating-current electrodes of titanium and titanium alloy - Google Patents

Abstract

The invention discloses a method of simultaneously oxidizing and coloring two alternating-current electrodes of titanium and titanium alloy. The method is characterized by comprising the following steps: (1) shearing titanium and titanium alloy products which are cold-rolled and degreased through an industrial production line to be in needed shapes and dimensions according to different requirements; (2) placing titanium and titanium alloy workpieces sheared in the step (1) into coloring liquor, placing two workpieces with a projection area ratio of 1:1 at the same time to two electrodes of an alternating-current voltage regulator, wherein the distance between the two workpieces is 5mm-40mm; (3) switching on a power supply for the placed workpieces to carry out coloring treatment; (4) moving the two workpieces back and forth in parallel to ensure coloring uniformity for single-sided coloring, and rotating each workpiece around the axis if the workpiece phases are colored in phase 360 degrees; and (5) switching off the power supply, taking out the colored workpieces and flushing for 1minute-2 minutes by clear water, and carrying out blow-drying on the workpieces by a hot-air blower. The invention discloses the method of simultaneously oxidizing and coloring the two alternating-current electrodes of titanium and titanium alloy, which is truly efficient, energy-saving, environment-friendly, good in stable repeatability, economical and capable of being industrially produced.

Description

A kind of titanium or titanium alloy alternating-current the two poles of the earth simultaneous oxidation colorize method

Technical field

The invention belongs to the painted method and technology field of titanium or titanium alloy surface oxidation.

Background technology

Existing titanium or titanium alloy is painted applies for (patent) number: 200910113054.8,201010172834.2200910248899.8 the steps include: alkali cleaning (or ultrasonic cleaning), pickling, electropolishing, after rinsing, painted 1～the 30min of perfectly straight stream electric monopole in heat-tinting solution, rinsing rear enclosed is processed, drying and processing.

The shortcoming of its aforesaid method has:

1, process is many;

2, pharmaceutical chemicals kind used many (6 to 8 kinds), consumption are large;

3, the time cycle long (often an operation needs 30min);

4, once paintedly only can complete a workpiece, only specify anode pigmentable;

5, institute's coloring site is only the institute opposite of negative electrode, can not realize 360 ° of uniform colorings of phase of workpiece;

6, must separately join a cathode electrode plate, there is loss problem in negative plate;

7, must be furnished with direct supply, and real mains supply is all alternating-current;

8, be only applicable to testing laboratory or small serial production.

Summary of the invention

The object of the invention is for a kind of real efficient, energy-saving and environmental protection are provided, stablize favorable reproducibility, economy, can suitability for industrialized production the painted method of titanium or titanium alloy surface oxidation.

The object of the invention is to be achieved through the following technical solutions.

Alternating-current the two poles of the earth simultaneous oxidation colorize method, its feature has following steps:

1), the titanium or titanium alloy product titanium alloy product after, degreasing cold rolling through industrial production line is cut into desired shape and size by different demands;

2), the titanium or titanium alloy workpiece of shearing through step 1) is put into coloring solution, coloring liquid proportioning according to volume ratio is: 1%-3% phosphoric acid (85%, wt%)+1%-3% hydrogen peroxide (30%, wt%)+98%-96% deionized water, solution temperature is 15-35 ℃, put into Liang Jian，Liang workpiece projected area ratio is 1:1 simultaneously; And minute be clipped to alternating-current voltate regulator the two poles of the earth, two workpiece distance 5-40mm;

3), the workpiece placing is switched on power, at voltage 5-90V, current density 5-10Adm ^-2carry out painted processing, the time is 20-240sec;

4), as painted in being one side, for guarantee painted evenly should parallel two workpiece that move around; As be that 360 ° of workpiece phases are painted, workpiece should be pressed separately to axis rotation;

5), cut off the electricity supply, by complete painted workpiece take out for clear water rinse 1-2min, with calorifier, dry up.

The invention has the beneficial effects as follows, higher by the oxide film intensity of the painted formation of the present invention, chemical stability is good, bright in luster, color even, and technique is simple, and efficiency is high, and cost is low, has higher decoration and use value.

Accompanying drawing explanation

Fig. 1 is process flow sheet of the present invention.

Embodiment

1), the titanium or titanium alloy product titanium alloy product after, degreasing cold rolling through industrial production line is cut into desired shape and size (this process is wiped if any polluting available 70%-99% ethanol) by demand;

2), the titanium or titanium alloy workpiece of shearing through step 1) is put into coloring solution, coloring liquid proportioning is: volume ratio 1%-3% phosphoric acid (85%, wt%)+1%-3% hydrogen peroxide (30%, wt%)+98%-96% deionized water, solution temperature is 15-35 ℃, and put into Liang Jian，Liang workpiece projected area ratio is 1:1 simultaneously, receive respectively alternating-current voltate regulator the two poles of the earth, two workpiece distance 5-40mm;

3), the workpiece placing is switched on power, at voltage 5-110V, current density 1-10Adm ^-2carry out painted processing, the time is 20-240sec.According to the requirement of required painted color, press table one, select different voltage:

Table one, voltage-Color conditioning scheme

4), as painted in being one side, for guarantee painted evenly should parallel two workpiece that move around; As be that 360 ° of workpiece phases are painted, workpiece should be pressed separately to axis rotation;

5), cut off the electricity supply, by complete painted workpiece take out for clear water rinse 1-2min, with calorifier, dry up.

Claims (1)

1. titanium or titanium alloy alternating-current the two poles of the earth simultaneous oxidation colorize method, is characterized in that, step is:

1), the titanium or titanium alloy product after, degreasing cold rolling through industrial production line is cut into desired shape and size by different demands;

2), the titanium or titanium alloy workpiece of shearing through step 1) is put into coloring solution, coloring liquid proportioning according to volume ratio is: 1%-3% phosphoric acid+1%-3% hydrogen peroxide+96%-98% deionized water, and wherein phosphoric acid wt% is 85%; Hydrogen peroxide wt% is 30%; Solution temperature is 15-35 ℃, and put into Liang Jian，Liang workpiece projected area ratio is 1:1 simultaneously; And minute be clipped to alternating-current voltate regulator the two poles of the earth, two workpiece distance 5-40mm;

3), the workpiece placing is switched on power, at voltage 5-90V, current density 5-10Adm ^-2carry out painted processing, the time is 20-240sec;

4), as painted in being one side, for guarantee painted evenly should parallel two workpiece that move around; As be that 360 ° of workpiece phases are painted, workpiece should be pressed separately to axis rotation;

5), cut off the electricity supply, by complete painted workpiece take out for clear water rinse 1-2min, with calorifier, dry up.

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