How to Solve the Short Strip and Scribing Defects that Occur during Extrusion of Aluminum Profiles?

As a Modular Pipe System Manufacturer, share with you. After the aluminum rod is heated, it is followed by the extrusion process. In the extrusion process of aluminum profiles, it is easy to appear defects that are visible to the naked eye (such as bending, deformation, short strips and scribe lines) and invisible defects (such as (Adsorbed particles), if you do not pay attention to observe and summarize the cause of the defects during the production process, and solve the problem in a timely manner, the appearance of the produced aluminum profile products are not good.

Double Aluminum Profiles

Let's take a look at the most prone problems of Double Aluminum Profiles, such as short strips, bends, and line defects. The reasons are as follows:

First: The size of the aluminum extrusion cylinder and the aluminum extrusion pad are not matched. The bad metal hole causes the aluminum metal particles to press in to form a short strip. Therefore, when selecting a mold, you must choose a suitable size of the mold pad and the support pad. If the size is not suitable, it can be added appropriately.

Second: The aluminum extrusion die was not replaced in time. The use time is too long and the hardness is not enough. The extruded profile is elastic and easy to bend.

Third: affected by the extrusion speed and temperature, if the extrusion speed is too fast and the extrusion temperature is too high, the profile flow speed will also increase, the degree of mold deformation will increase, the speed of metal flow will increase, and the deformation resistance will Relatively weak, it is easy to cause aluminum sticking, increase the roughness of the surface of the tool and mold, and form a scribe line on the surface of the profile.

These defects have some common characteristics: the surface of the aluminum profile is white, longitudinally distributed and with a certain concentration, intermittent or star-shaped, the tail is more than the front, and the last is that the color is gray and black after oxidation, which seriously affects Beautiful and quality.

In order to solve these defects that affect the quality of aluminum profiles, we must strictly indicate that the size error of the fit between the extrusion barrel and the extrusion pad does not exceed 0.1mm when selecting the aluminum extrusion die when producing aluminum profiles. The error between the extrusion barrel and the working part and the non-working part, that is, the chamfering mouth of the extrusion barrel, does not exceed 1mm, which ensures the hardness of the aluminum extrusion die and the smooth and non-geared working belt. Only by adopting the correct aluminum extrusion process can we ensure the aesthetic quality of the produced aluminum products.

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