6000 series aluminum alloy represents 6061 mainly contains magnesium and silicon, so it concentrates the advantages of 4000 series and 5000 series.

6061:Aluminium 6061 is an Al-Mg-Si alloy, a cold-treated aluminum forged product suitable for applications requiring high corrosion resistance and oxidation resistance. It has good usability, easy coating and good processability. Characteristics: medium strength, good corrosion resistance, good welding performance, good process performance (easy extrusion), good oxidation and coloring performance. Applications: Energy tools (eg car luggage racks, doors, windows, body, heat sink, compartment casing)

Cu, so the strength is higher than 6063, but the quenching sensitivity is also higher than 6063, can not be quenched, need to re-solution treatment and quenching aging, in order to obtain higher strength.

cnc machining parts023
cnc machining parts023

Alcoa 6061-T651 is the main alloy of 6-series alloy and is a high-quality aluminum alloy product after heat treatment pre-stretching process; Alcoa 6061 has excellent processing properties, good corrosion resistance, high toughness and no deformation after processing. Excellent characteristics such as easy color film and excellent oxidation effect. Anodizing characteristics:

1: Anodic oxidation feasibility

6-series aluminum alloy, also known as “aluminum-magnesium-silicon alloy”, is especially important in engineering applications. It is mainly used for extrusion profiles. This series of alloys can be anodized. Typical grades are: 6063,6463 (mainly Suitable for bright anodizing).

The anodized film of the high strength 6061 and 6082 alloys should not exceed 10 μm, otherwise the anodized film will be light gray or yellowish gray, and its corrosion resistance is also significantly lower than 6063 and 6463.

2:6061 hard anodized color

Aluminum hard film 40 micron 6061 light green anode can be white, yellowish white yellow;

5052 dark green

7075 gray

The amount of aluminum and silicon is most likely to affect the color. Hard anodizing is generally black, gray, dark gray, or yellowish brown. The hard oxidation is carried out in black and natural. The natural color is determined by the content of the material and the processing technology. They are different, mostly military green, gray, and some will be yellowish.

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3: What happens to the spots and uneven color?

Sometimes anodizing will also cause the aluminum parts to be scrapped. This is worth our attention. The first one, do not do anodizing when the machining aluminum parts are not pure. The second one, after you do, you will find the surface of the aluminum parts. The spot is largely caused by the impure material of the aluminum. To avoid uneven color, you must first ensure the purity of the material of the aluminum. How to solve this problem? 1) When the aluminum density is not good enough, the aluminum surface is bare and the color is uneven:

Solution: First test with an aluminum part, and then carry out all anodization if possible. 2) Pre-oxidation treatment Water washing process: Water removal after degreasing (degreasing): It should have two water washings, the target is to wash the residual product of the product (or acid or alkali, if solvent-based emulsifier is added to the degreaser) , cleaning is more important.) or oily. Avoid bringing in the subsequent bath to affect the invariability of the bath and prevent the product from being oily and causing defective products.

3) Cleaning after blocking: It should be washed twice with hot water after adding water. After the blockade, the blockade of the primary washing product and the impurities adsorbed on the surface are washed. The effect of soaking hot water to reach the fast drying

cnc machining parts023

4: How to judge

The surface of the aluminum part is generally electroplated on the surface, and has a relatively dense and dense oxide film, which is the real raw material metal inside the film.

The surface-plated metal can be judged from the appearance, and is generally not densely illuminated before electroplating, and generally brighter after plating and has a certain gloss.


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