With the growth of aluminum profile technology, the quality requirements for aluminum profile are getting higher and higher. The flatness of the profile plane is one of the required quality indicators. The plane requirements of aluminum profiles are defined in the standard GB5237 of aluminum alloy construction profiles. The plane gap in the product size fault is the requirement for the plane.
Plane gap refers to: the 25mm long ruler is leaned against the concave surface of the profile along the width, and the maximum gap value (F1) between the ruler and the concave surface of the profile is measured. This value (F1) is the plane on the arbitrary 25mm width of the profile Gap: Lean the ruler whose length is greater than the width of the profile against the concave surface of the profile, and measure the maximum gap (F) between the ruler and the concave surface of the profile. This value (F1) is the plane gap of the profile across its entire width.
The plane gap is also what we usually say that the surface is flat and unyielding. The smaller the gap value, the flatter it is. The index of the plane clearance is the size requirement of the section, not the requirement of the shape (shape and position), then how is the shape on the group defined? The scale defines the degree of curvature and the degree of twist, the gap value h, T The smaller the better, if it is 0, there is no distortion in the performance. Although this is a theoretical effect, there must be distortion in reality. So is there a term for the flatness and unyielding of the product of the topography group? Yes, that is the flatness. Aluminum alloy profile.
Flatness refers to the problem of the macroscopic height of the substrate relative to the ideal plane. The service zone is the area between two parallel planes separated by the service value t. The plane of the product is inflexible, placed on the reference surface, the lowest point is on the reference surface, and the distance between the highest point and the reference surface is the flatness . Compared with the plane clearance, curvature and twisting degree mentioned above, it is generally understood that flatness is the comprehensive performance of plane clearance, curvature and twisting degree.
