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Quality inspection chart

Show you details of how Chongqing Sipxmach test and report the quality of your metal stamping products.

Sipx machinery Co.,Ltd
Powder coating parts checking criteria
The material include and not limited on, Aluminum part, metal parts, stamping parts, accoridng to your special requiments
No. Testing items Testing method
detail description
Criteria The test image show for Aluminum powder coating part OK/NG
1 luster 60 ° angle of specular reflectance gloss machine 17±3 18° luster OK
2 Film thickness Unit: μm Film thickness minimum 25μm 32μm Film thickness OK
3 Color difference Colorimeter L: ±1.0
a: ±0.5      b: ±0.5
Follow the standard palette
L: 0.5    a: -0.22
b: -0.15
4 Hardness 1.Smooth the pencil nib flat
2.Nib pressure 750g
3.A pencil hardness from H, 2H to3H should be verified
After the hardness 2H or above was tested, and no cut mark on the surface, Then the painting hardness ok Hardness 4H
5 RCA Wear Test 1. The baked testing sample is fixed on the RCA tester
2. 175g weight placed on the paper belt of “RCA Wear Tester”
3. Set the instrument on “run in a jump” mode with a cycle of 80 times
4. After the times of testing was completed, then remove the testing sample from the machine, and check the surface.
Check the surface of the product if have defects such as exposed materials, if not, determine ok No peeling paint
6 Rubber wear test 1. Eraser (Model CS-10), load (1000g/cm2), speed (30 round/min), rubber width (3cm)
2. The surface of testing color plate must be flat
3. Repeat the wear test with the eraser until the
substrate or primer is visible at the paint booth, then record the data
The testing cycle equal or greater than 500 times, and the substrate of the sample still not visible, then determine ok After the test
no exposed substrate
7 Adhesion 1. Stick 3M#610 tape on the cross-cut surface of color plate
2. Adhesive tape is pressed for 90 seconds, then pulled up quickly by 180°
3. Test tape should be kept
No paint loss on the surface Adhesion OK
8 Alcohol resistant 1. Fix it on the copper column with 1.5mm thick gauze
2. Wet (95%) medical alcohol on gauze
3. Add the weight of 500g to the upper end of the copper column
4. 2-second speed back and forth to make the specified number of times
Testing equal or greater than 100 times, and the substrate of the sample still not visible, then determine ok Substrate is not exposed
after alcohol abrasion test

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    At Sipxmach, our goal is to help our customers lower production costs and increase production rates and quality. Interested to see what SIPXMACH can do for you and your team? Contact us to schedule a tour of our state-of-the-art facility

    Email:             [email protected]
    Skype:            Rubioli8677 (Sales manager)
    Office add:     No.551, Baosheng Avenue, Huixing Street, Yubei District, Chongqing, China