Correction methods for flatness of aluminum extrusion profile

Correction methods for flatness of aluminum extrusion profile
Correction methods for flatness of aluminum extrusion profile
The aluminum profile is basically formed by the extrusion process.
After the aluminum profile comes out of the mold, it enters the room temperature from the high-temperature environment.
Due to the large temperature difference, the flat hollow aluminum profile is prone to deformation, resulting in the flatness not meeting the requirements.
Here Brightstar Aluminum Machinery summarizes the factors that affect the flatness problem, and based on this, formulates the solution to the flatness problem of aluminum extrusion.
1. Use effective die repair to improve the flatness
Die repair is the most common solution to the flatness of aluminum extrusion at home and abroad.
The advantage of this method is that it has a wide range of applications. Basically, all extruded profiles can use this treatment method.
The disadvantage is that it needs to stop production.
After the mold is repaired, it is time-consuming and laborious to try the mold again on aluminum extrusion press, and it is also not conducive to energy saving and consumption reduction.
The poor flatness clearance of the aluminum extrusion is mainly related to the uneven flow rate of the mold.
By changing the size or angle of the diversion pit, or changing the length of the working belt, the metal flow rate can be effectively adjusted, so that the flow rate is uniform and the defects of flatness is eliminated.
This method is generally used in the initial production of profiles.
Some molds can be repaired once to solve the flatness problem, and some molds need three or more times to completely solve the flatness problem.
This is not only related to the mold itself, but also to the mold repair, the skill level of technicians also has a greater relationship.
2. Off-line roller shape correction to straighten the flatness
First, according to the characteristics of the specific flatness of aluminum extrusion profile, the rollers of the off-line aluminum profiles shape corrector machine are reasonably set, and then a product whose flatness is out of tolerance is used to fix the rollers.
After the flatness is qualified, the height and position of the rollers are fixed, and then the batch of aluminum extrusion is corrected to meet the tolerance and dimension.
Aluminum profile shape corrector machine, also known as an aluminum profile shape correcting machine, is an ideal machine to correct the dimension and tolerance of aluminum profiles and regulate aluminum profiles’ angle degree,
It is mainly used for shaping and correcting aluminum profiles for the dimensions and tolerances.　
It can improve the yield of aluminum profile products and reduce the waste rate greatly, increase the profit, and cut down production costs.　
3. Online correction to straighten the flatness
It is based on the principle of the off-line roller correction method,
Adding a bearing seat and a roller on the basis of the outlet guide device of the aluminum extrusion press,
And changing the pressure on the product by adjusting the height and position of the roller to cause a certain amount of deformation of the product,
So that the flatness of aluminum extrusion is controlled within a reasonable range, so as to achieve the purpose of online finishing.
The above are the 3 main methods for flatness correction of aluminum extrusion profiles.
Brightstar Aluminum Machinery provides not only aluminum profile shape corrector, aluminum profile wrapping machine and aluminum profile polishing machine and auxiliary equipment, but also wood grain effect sublimation machine, aluminum profile brushing cleaning machine and aluminum profile shot blasting machine, etc for our customers.
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February 22, 2023