Industry News

Dimensional accuracy

Length, width and thickness measurement: Using calipers, micrometers and other tools to accurately measure the length, width, thickness and other basic dimensions of purified aluminum profiles. For example, when producing purified aluminum profiles with a standard specification of 50mm width, the allowable size deviation is generally within the range of ±0.5mm to ensure that the profiles can be accurately splicing during assembly to meet the structural requirements of the purification equipment.

Angle measurement: For Angle requirements of purified aluminum profiles, such as L-shaped, T-shaped and other special shapes, the Angle ruler will be used to determine whether the Angle meets the design standards. For example, when making an L-shaped purified aluminum profile with a 90° Angle, the Angle deviation is usually controlled within ±0.5°, which is important to ensure the sealing and stability of the purification equipment.

Visual quality inspection

Surface flatness inspection: through the naked eye observation or the use of flatness tools to check whether the surface of the profile is smooth, there is no uneven, wavy and other defects. Because the uneven surface may affect the installation accuracy and appearance of the purification equipment, it may also lead to dust accumulation, which is not conducive to the purification of the environment.

Color and gloss inspection: check whether the surface color of the profile is uniform and consistent, and whether the gloss meets the requirements. For purified aluminum profiles with color requirements, such as white profiles used in hospital purification projects, the color deviation should be within the specified range of color difference values. In terms of gloss, different application scenarios may have different requirements, for example, in some purification workshops that have requirements for light reflection, profiles are required to have a high gloss.

Surface defect inspection: Check whether there are scratches, bumps, bubbles, impurities and other defects on the surface of the profile. These defects may damage the surface structure of the profile, affecting its purification performance and use. For example, scratches on the surface may destroy the ability of the coating, profile.

Physical property test

Hardness test: Rockwell hardness tester, Brinell hardness tester and other equipment to purify the hardness of aluminum profiles. Hardness is important for the deformation resistance of profiles during installation and use. For example, in the framework of a purification equipment that is subjected to a certain pressure, the profile is required to have sufficient hardness to prevent deformation leading to a loose seal of the equipment. The hardness value of the general purified aluminum profile (taking Wechsler hardness as an example) is between 8-12HW.

Strength test: including tensile strength, bending strength and other tests. Tensile or bending tests are carried out on the profiles through equipment such as tensile testing machines to determine the stress they can withstand. This is important for evaluating the ability of profiles to withstand various external forces in the purification equipment (such as tension during installation, vibration during equipment operation, etc.). For example, the tensile strength is generally required to be above 160MPa to ensure that the profile will not break under normal use.

Density: The density of profiles using tools such as density gauges can reflect the material uniformity and quality of profiles. For purified aluminum profiles, the appropriate density helps to ensure its physical properties and purification properties. The density of aluminum alloy profiles is about 2.7-2.8g /cm³.

Chemical property

Corrosion resistance test: salt spray test, acid immersion test and other methods to the corrosion resistance of profiles. In the salt spray test, the profile sample is placed in the salt spray test chamber to simulate the harsh corrosion environment and observe the corrosion of the profile surface after a certain time (such as 240 hours). Good corrosion resistance can ensure that the profile is used in a humid, chemical purification environment (such as chemical workshop purification equipment) for a long time without corrosion, so as to maintain its performance and appearance.

Composition analysis: Through spectral analysis and other technical profiles in the content of various alloying elements to ensure that its composition meets the specified standards. For example, in the 6063 aluminum alloy purified profiles, the content of mag