JPS6217492Y2 - - Google Patents

Description

[Detailed explanation of the idea]

The present invention relates to a power supply holder used for electrolytic treatment of metal articles such as aluminum sash. Conventionally, it has been known that in electrolytic oxidation treatment of aluminum sash and the like, the material to be treated is suspended from a power supply holder that has a support frame that also serves as a power supply and a pressing claw (for example, 50−
(Refer to No. 15900 and Utility Model Publication No. 54-27116). However, in conventional power supply holders, SUS or the like is used as the material for the pressing claws, but
It did not have sufficient corrosion resistance and could not be immersed in an electrolytic treatment solution containing sulfuric acid or the like. Therefore, one end of the material to be treated remains untreated, and a decrease in processing yield is unavoidable. In addition, the mechanical strength was not sufficient, and the durability of the holder was poor due to wear and deformation of the pressing claws. This invention solves the problems of the conventional technology,
The objective and effect is to provide a power supply holder with excellent corrosion resistance and durability, which allows the entire treated material to be immersed in a sulfuric acid treatment solution, and has a pressing claw that is resistant to wear and deformation. It is. The present invention is a power supply holder for sulfuric acid bath electrolytic treatment that has a support frame that also serves as a power supply and a pressing claw, and suspends and holds the material to be treated. Weight, the same below) and Ti and 2~
Constructed of a corrosion-resistant hard alloy consisting of 40% of at least one selected from Ta, Nb, Zr, Mo, V and Al (however, in the case of Mo, V and Al, the total amount is 5% or less). It is characterized by becoming. With this configuration, the present invention can sufficiently achieve the above-mentioned objective effects. Hereinafter, the present invention will be explained in more detail with reference to the drawings. FIG. 1 is a front view showing an example of the power supply holder of the present invention, in which a workpiece 1 such as aluminum sash material is provided at the tip of a support frame 2 that also serves as a power supply and at the tip of a press frame 3. The substrate is suspended and immersed in a treatment liquid while being held by the pressing claws 4, and subjected to electrochemical surface treatment. A receiving metal fitting 5 which usually has sufficient electrical conductivity and is excellent in corrosion resistance and mechanical strength is electrically conductively fixed to the tip of the support frame 2 . Further, each of the frames 2 and 3 is configured to be rotatable with respect to each other by a pin 6, and a spring 7 ensures that the material to be treated 1 is held in place, and also allows the material to be treated to be attached and detached at a timely manner. . The present invention is characterized in that the pressing claw 4 in such a power supply holder is made of a Ti-based alloy having a specific composition. As described above, the pressing claw tool 4 is required to have sufficient mechanical strength and durability in order to hold the material 1 to be treated and to allow the entire material to be immersed in the sulfuric acid treatment solution. As a material that conforms to this, the balance of Ti98~60% is Ta, Nb, Zr, Mo, V,
It has been found that an alloy containing at least one selected from Al is suitable. The alloy composition of Ti is 98
If the hardness exceeds 98%, the hardness decreases (less than 20 on the Rockwell hardness C scale), so it needs to be 98% or less. In addition, among other alloy components,
Even if Ta, Nb, and Zr are used in a composition exceeding 40%, the hardness and corrosion resistance will not be much improved, and these metals are expensive, so the total amount is preferably 40% or less. When at least one of Mo, V, and Al is included, if the amount exceeds 5%, corrosion resistance will deteriorate, so the total amount must be 5% or less. Such alloy materials can be manufactured by conventionally known methods such as arc melting, plasma arc melting, electron beam melting, and the like. Pressing claw tool 4
is preferably constructed entirely of the alloy of the present invention, but may be constructed by coating the surface of another base metal with the alloy material. Next, examples of the present invention will be shown below with reference to comparative examples. Ti-based alloys having various compositions shown in Table 1 were produced by an arc melting method, and were used as pressing claw members for power supply holders. The hardness of these alloys (Rockwell C
scale) and a 15% sulfuric acid aqueous solution, the amount of corrosion was measured when a voltage of 20V was applied at 15°C.

[Table] From the results in Table 1, the alloy material of the present invention has sufficient strength and excellent corrosion resistance, and has sufficient durability as a pressing claw material for a power supply holder that can be immersed in processing liquid. It is clear that it can withstand practical use.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an example of the power supply holder of the present invention. 1: Processed material, 2: Support frame, 3: Pressing frame, 4: Pressing claw, 5: Receiver, 6: Pin,
7: Spring.

Claims (1)

[Scope of utility model registration request] In a power supply holder for electrolytic treatment that has a support frame that also serves as a power supply and a pressing claw and holds the material to be treated in suspension, the surface of the pressing claw is 98 to 60% by weight.
of Ti and 2-40% of Ta, Nb, Zr, Mo, V and
At least one selected from Al (however, Mo, V
A power supply holder for electrolytic treatment in a sulfuric acid bath, characterized in that it is made of a corrosion-resistant hard alloy comprising: