Dimensional tolerance standards for Aluminum Extrusion
Aluminum profile extrusion is a common processing method, due to its lightweight, beautiful, high strength, easy to process and other characteristics, it is widely used in construction, transportation, electric power and electrical, mechanical and electronic fields. The aluminum extrusion size tolerance is one of the important factors affecting the performance and quality of aluminum profiles. This article will introduce the aluminum extrusion size tolerance standards.
Dimensional tolerance standard
Aluminum extrusion dimensional tolerances are generally divided into straightness, straightness, straightness, slope, shape deviation and size deviation. The following will be introduced separately.
1. Right angle tolerance
Straight angle tolerance refers to the angular accuracy of aluminum extrusion. According to the aluminum extrusion standard, the straight angle tolerance is divided into three categories, which are high precision, ordinary precision and general precision. Among them, high precision requires that the straight angle error should not exceed 1/2000, ordinary precision requires that the straight angle error should not exceed 1/1000, and general precision requires that the straight angle error should not exceed 1/500.
2. Tolerance of Straightness
Tolerance of straightness refers to the accuracy of flatness of aluminum profiles. Also according to the aluminum extrusion standard, the straightness tolerance is divided into three categories, which are high precision, ordinary precision and general precision. Among them, high precision requires the straightness error not exceeding 0.03mm/m, ordinary precision requires the straightness error not exceeding 0.05mm/m, and general precision requires the straightness error not exceeding 0.1mm/m.
3. Straightness tolerance
Straightness tolerance refers to the straightness accuracy of aluminum profiles. According to the aluminum extrusion standard, straightness tolerance is also divided into three categories, namely, high precision, general precision and general precision. Among them, high precision requires straightness error not more than 0.1mm/m, ordinary precision requires straightness error not more than 0.2mm/m, and general precision requires straightness error not more than 0.3mm/m.
4. Skew Tolerance
Skew tolerance refers to the skew precision of aluminum profiles. According to the aluminum extrusion standard, the skew tolerance is also divided into three categories, namely, high precision, general precision and general precision. Among them, high precision requires that the skew error does not exceed 0.1mm/m, ordinary precision requires that the skew error does not exceed 0.2mm/m, and general precision requires that the skew error does not exceed 0.3mm/m.
5. Shape deviation tolerance
Shape deviation tolerance refers to the surface shape error of aluminum profile. According to the aluminum extrusion standard, the shape deviation tolerance is also divided into three categories, which are high precision, ordinary precision and general precision. Among them, high precision requires that the shape deviation error does not exceed 0.1mm, ordinary precision requires that the shape deviation error does not exceed 0.2mm, and general precision requires that the shape deviation error does not exceed 0.3mm.
6. Dimensional deviation tolerance
Dimensional deviation tolerance refers to the dimensional deviation error of aluminum profile. According to the aluminum extrusion standard, the dimensional deviation tolerance is likewise divided into three categories, namely, high precision, ordinary precision and general precision. Among them, high precision requires that the dimensional deviation error does not exceed 0.1mm, ordinary precision requires that the dimensional deviation error does not exceed 0.2mm, and general precision requires that the dimensional deviation error does not exceed 0.3mm.
Here are the aluminum extrusion processing video from Hugh Aluminum
In conclusion
These are all the methods to identify the size of aluminum extrusion. When we check the extruded aluminum tolerance we should measure the tolerance in it based on straightness, shape deviation, dimensional deviation tolerance, slope and right angle. Measuring the tolerances is necessary, too much tolerance in aluminum extrusion can cause building safety issues. Therefore we must measure the tolerances strictly.
Hugh Aluminum is an aluminum extrusion manufacturer based in China. We manufacture aluminum profile products including aluminum roofings，aluminum heat sink aluminum T-slot profile, aluminum deck, aluminum fence, aluminum doors and windows, solar aluminum frame. We offer large quantity of aluminum building materials and factory price
