How to control the anodized aluminum CNC machining parts thickness and dimension ?

what is the anodisation thickness of the aluminum CNC machining parts ?

It should be control in CNC machining factory or surface treatment factory?

It should be keep margin before the CNC machining ?

How is the thickness of the anodized to be done to ensure the accurate of the product?

As a demand for anodized aluminum CNC machining parts products,

Have you been puzzled by these questions?

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Sino machining as a CNC machining factory with 12 years experience in metal processing and surface treatment, we will answer the following questions: “Control of anodized thickness and size of CNC aluminum parts”

Usually CNC machining aluminum parts surface treatment anodizing have 3 type: ordinary anodizing, hard anodizing, thick film anodizing.

Ordinary anodized aluminum alloy processing the thickness of 3 ~ 15um, need to do in accordance with the requirements of product tolerances; due to ordinary external oxidation of smaller size, the hole becomes larger, the aluminum surface can generate several microns to dozens of microns of oxidation membrane. Thereby enhancing the wear-resistant parts, corrosion resistance, weather corrosion;

CNC aluminum alloy machining hard anodizing: hard anodized film generally requires a thickness of 25 ~ 150um, if the product is high precision, it is recommended that the tolerance of the hole control in 1 to 3 around the wire size control in the original Of the tolerance range is good, because the hard oxide oxide film penetration of 50% within the aluminum alloy, 50% attached to the aluminum alloy surface, so the outer dimensions of hard oxide products become larger, the hole becomes smaller, the other hard Oxidation hardness generous is HV300 ~ HV500 or so, the hardness of the aluminum alloy after its own hardness is not changed, harden only the outer layer of aluminum oxide film; also play wear, corrosion resistance, weather resistance Corrosion effect;

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Thick-film anodizing of aluminum CNC machining processing: Thick-film oxidation generally requires a thickness of 50 ~ 250um, aluminum or aluminum alloy products before taking the oxidation, the product need to enlarge the hole 0.5 to 5 wires, dimensions in the original tolerance The range of small 1 to 5 wire, tolerance control range or according to the specific product requirements, because the thick oxide film is oxidized with the energized time increases, the current increases and promote the oxide film thickening; increase the surface of Thick, so as to achieve wear-resistant, corrosion-resistant, weather-resistant role of corrosion;

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In addition, the oxidation of CNC aluminum alloy processing can also increase the drawing of the pre-treatment: the sandpaper is repeatedly scraping lines with aluminum manufacturing process, the main process is divided into de-esterification, sand mill, washed three parts. Brushed oxide clearly show every trace of fine lines in order to play a beautiful, anti-erosion effect;

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