铅笔硬度测试
工具：中华牌铅笔,白棉布,400＃砂纸。
测试要求:不同漆膜需采用不同的铅笔,按图纸要求选用。(PU 漆>=HB；UV 漆>=2H；IML>=3H；丝印>=HB)
样品数量：至少 1 个样品。
检测方法:
1) 用 400＃砂纸垂直磨平铅笔头部以保证平滑,且保证铅笔头部长度在 5-6mm,直径 0.5mm 左右。(每划 5 个来回，需重复该动作)。
2) 以约 1mm/s 的速度在关键部位划线约 10mm,至少 30 来回。保证 45o角划线,负载 750±10g。
3) 用软布擦去铅粉,观察表面。
评判标准:
1) 漆膜或丝印层无明显划痕或轻微划痕不超过 3mm。 | Hardness test
Tools: Zhonghua pencil, white cotton cloth, 400# sandpaper.
Testing requirements: To choose the pencil depending on the type of film. ( PU>= HB; UV >= 2H; IML >= 3H; silkscreen >= HB )
Sample amount: At least one sample.
Testing method:
1) Vertical reMOVed the head of pencil with 400# sandpaper to ensure smooth,the length of pencil head 5-6mm and 0.5mm in diameter. (Each five cycles, to repeat the action)
2) Marking off about 10mm with the speed of 1 mm/s, an angle of 45°,the force about 750±10g, at least 30 cycles.
3) Wipe off pencil powder with cotton cloth and examine the surface.
Acceptable criteria:
1) Painting or silkscreen no evident scratches or minor scratches no more than 3 mm. |
发表于 2018-3-18 10:40:57
发表于 2020-11-12 13:24:06
楼主
发表于 2018-3-18 15:14:49
