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  • Metal Parts Products Manufacturers at China

    Metal Parts Products —Stamping & CNC Machining Manufacturers

    Aluminum Product Acceptance Standard

    1. Purpose
    This standard regulates product shipment inspection to ensure that the product meets quality and customer requirements.
    Quality standards: A grade, AQL:MAJJ(0.4); MIN (1.0) Normal grade III, size N=3, C=0, Electrical performance according to 0 receiving goods, 1 returns standard
     
    2. Scope of Application Aluminum Tube (11705WT)
    UV curing aluminum tube

    Aluminum Cap (11702WT)

    Aluminum cap knurled
     
    3.Product testing requirements
    1, Go/No go gage verification: Use the finished Go/No go gage for thread and hole size verification; Conforming to Tong GUI Tong, Stop regulation
    2, Aluminum tube groove permeability test; The groove is not qualified for leak
    3, Size measurement: Measure the dimensions according to the dimensions indicated on the drawing; the dimensions meet the tolerance range as qualified
    4,  Acid and alkali solution soaking, isopropanol soaking experiment, crack test experiment
    5,  Appearance determination
    6,  package
     
    4.Go/No go gage test guidelines
    Test items Inspection content Picture
    Remarks
     4.1 Aluminum Cap 4.1.1 Aluminum Cap Threads Go/No go gage inspections shall be performed with a pass gauge (plug gauge) M16X1.0-6H. Tong GUI Tong, Stop regulation is a qualified product.
    T is a general rule
    Z is not go gage
    T is a general rule

    The female thread end must be able to screw in all, Qualified。
    The female thread end must be able to screw in all, Qualified。
    The end of the internal thread can only be screwed into 2-3 teeth, the back can not be screwed in, Non-conforming products

    MAJ
    4.2 Aluminum Tube 4.2.1 Aluminum pipe thread Go/No go gage check with Go/No go gage M16X1.0-6g (ring gauge), General regulation, Stop regulation is a qualified product.
    T is a general rule:The female thread end must be able to be fully screwed into the pass
    T is a general rule

     
    Z is not go gageZ is not go gage
    T is a general rule
    Z is not go gage:The end of the internal thread can only be screwed into 2-3 teeth, the back can not be screwed in, Non-conforming productsNon-conforming products
    T is a general rule
    Z is not go gage
    MAJ
    4.2.2 Aluminum tube Go/No go gage inspection, General regulation, Stop regulation is a qualified product.
    Z is not go gage:Aluminum tube bore can not plug into the end of the round Z is qualified
    qualified..
    T is a general rule:Aluminum tube bore must plug into the T end of the round is qualified.
    T end of the round is qualified

     
    MAJ
    4.2.3 Aluminum tube Go/No go gage inspection, General regulation, Stop regulation is a qualified product. MAJ

    5.  Groove permeability test
    5.1 Aluminum tube groove permeability test 5.1.1 Aluminum tube groove permeability test, Airtight is qualified.
    Insert the tool for testing breathability into the aluminum tube and place the tube in water. And inflated inside the trachea, The groove is airtight and is a qualified product.

    Insert the plug into the groove end so that the groove is between the two plugs
    Aluminum tube groove permeability test
    Breathable Plug
    Breathable Plug

     
     
    Fully submerge the aluminum tube in the water and inflate at the end of the trachea to see if there are bubbles in the grooves.
    No bubbles emerged as qualified;
    Air bubbles leaked out of the groove and the product failed.
    Fully submerge the aluminum tube in the water

     
    MAJ
     
    6.Size measurement
    6.1 Aluminum cap size measurement 6.1.1 Aluminum caps for regular dimension measurements: Measure and record the dimension number 1, 6, 8, 9, 11 and 12 in the drawing.
    Tools: inner micrometer, outer micrometer, vernier caliper

    Inside micrometer
    Inside micrometer

     
    Outside diameter micrometer
    Outside diameter micrometer

     
    MAJ
    6.1.2 Aluminum cap cutting measurement: The dimension number 2, 3, 4, 5, 7, and 10 in the drawing needs to be cut and measured.
    Sectioning: Metalworking shop milling machine
    Tools: micrometer, vernier calipers
     

    The aluminum cap milling machine processing effect as shown in the picture, milling up to the first step (Can't mill the inner diameter step to be measured, measure the internal circle diameter of the number 7.
    After the internal diameter is measured, the entire cutting is performed. Measuring the remaining internal dimensions as shown
    the entire cutting is performed
    MAJ
     
    6.2 Aluminum tube size measurement 6.2.1 General measurement of aluminum tube size: Measure and record the dimension number 1,2,3,7,8,9,10,11,13,14,22,23,24,25,26,27,28,29,30 in the drawing
    Tools: inner micrometer, outer micrometer, vernier caliper

     
    MAJ
    6.2.2 aluminum tube size measurement: Measure and number the dimension number 5,6,12,15,16 in the drawing
       Tools: Quadratic dynamometer

    Measurable LCD Window R Corner Radius Size
     LCD Window R Corner Radius Size

     
    U-shaped mouth radius size and height
    U-shaped mouth radius size

     
    MAJ
    6.2.3 aluminum tube cutting measurement: The dimension number 4,17,18,19,21 in the drawing needs to be measured after cutting.
    Cutting Tools: Milling Machines
    Measuring Tools: Vernier Caliper, Quadratic Element

    Under the Two dimensional instrument,
    Vertical measurement chart size (No. 21)
     Two dimensional instrument
    Measuring the groove size

     
    Cut as shown to measure the size

     
    MAJ
     
     
     
     
    7.pH test
    7.1pH test 7.1 Check whether the paint and coating of the sample test position are intact before testing
    7.2 Soak the sample in 0.5mol/L NaOH solution for 60 minutes

    7.3 After the sample is taken out for cleaning, wipe it clean with a clean cloth. Check the sample for coating loss or paint loss (Aluminum pipe inner and outer pipe surfaces need to be checked)
    7.4 Soak the sample in the ORP solution for 60 minutes
    7.5 After the sample is taken out for cleaning, wipe it clean with a clean cloth. Check whether the sample is peeled off or painted off (inspection on the inner tube surface and outer tube surface of the aluminum tube)
    7.6 Soak the sample in deionized water for 4h (deionized water is cooled from 80°C to room temperature)
    7.7 After the test sample is taken out for cleaning, wipe it clean with a clean cloth. Check the sample for coating loss or paint loss (Aluminum pipe inner and outer pipe surfaces need to be checked)
    Remarks: When inspecting the appearance, the sample is peeled off or the paint is rejected as bad, test fail
     
     
     

     

    Test Container: Measuring cylinder
    Solution height: 1 inch
    Placement method: test tube slot section, down


    Slot end

     
    MAJ
    8.Isopropyl alcohol test
    8.Isopropyl alcohol test 8.1 Check whether the paint and coating of the sample test position are intact before testing
    8.2 Soak the sample in isopropyl alcohol solution for 60 minutes
    8.3 Remove the sample after the test, rinse with deionized water, and wipe the surface with a paper towel. Check whether the coating is sticky or peel off. If the coating has the above defects,, Treat as bad sample and test fail

    Soak depth 1inchSoak depth 1inch
    MAJ
    9.Crack test
    9.Crack test 9.1 Check whether the paint and coating of the sample test position are intact before testing
    9.2 Place the sample in an environment of -20°C for 2 hours and observe whether the shell has any cracking phenomenon.
    9.3 Place the sample in a +70°C environment for 2 hours to observe if the shell has any cracking phenomenon
    9.4 Place the sample at -20°C for 1 hour, place it at 25°C for 1 hour after one hour, put it at 70°C for 1 hour after one hour, and stand for 1 hour after taking it out. After four cycles of the above steps, observe whether the sample has cracks
    Remarks: When the appearance is checked, if the sample cracks, it is regarded as bad. Test fail

    Temperature curve
    Temperature curve

     
    Crack map
    Crack map

     
    MAJ

    10.Aluminum tube, aluminum cap appearance inspection
    10.appearance inspection For detailed inspection of aluminum tubes and aluminum caps, please refer to the attached document "Aluminum Tube (11705WT) Aluminum Cap (11702WT) Appearance Inspection Document". 1. From the sensor side (U tank end) measurement within 0-6.35MM, Exposed metal is not allowed on the outside diameter of any aluminum part and inside diameter of the housing.
      Class A surface Class B and Class C surfaces
    Receive/reject criteria 1. Class A surfaces are defined for shell printing.
    2. Do not allow important defects.
    3. No polished marks are allowed in the etched area
    4. No visible colored debris or spots are allowed on letters.
    5. accepting within three minor defects
    1. Class B Class C surfaces are defined for shells and knurled nuts
    2. Does not allow metal exposure
    3. Class B and Class C surfaces allow an important defect within 1
    4. Class B surface receives less than 9 minor defects
     
    Important defect 1. The color sample does not meet the required color.
    2. Permanent fingerprint
    3. pinhole, punctured, or fragment Dent, regardless of the size of the resulting exposed aluminum.
    4. Spots Any non-linearity of the maximum width of 0.51 mm or more, including the following:
    Pits Burrs Gouges
    Dings Divots Dents
    Flaking Scuff Marks Cracks
    Chipping Corrosion/Oxidation Peeling
    5. Scratches: The length exceeds 12.7 mm and the maximum width is 0.127 mm.
    6. Missing radium mark, Blurred or mislabeled, incomplete marks (eg gaps, holes, etc.), jagged or rough edges.
    Minor defect 1. The maximum spot width is 0.25 mm but less than 0.51 mm
    2. Scratches: Traces with a length of less than 12.7 mm and a maximum width of 0.05 m to 0.13 mm.
    MAJ
    11..package
    11.1 Aluminum cap packaging
    11.1.1 six aluminum caps arranged in a row and tied with a transparent dust bag, Bundle it with tape.
    Place the plastic tray.
     six aluminum caps arrangedPlastic tray
    Accumulate six layers of plastic trays, and use anti-side bags to place cartons.

     
    MIN
    11.2 Aluminum tube packaging 11.2.1 Place the aluminum tube in a plastic tray.
    Accumulation of 8 layers of plastic trays, and use anti-side bag packaging, placed cartons.
     anti-side bag packaging

     

     
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