diyihuisuowangzhi:ORT TEST_图文

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ORT测试
讲师:Swallow Li
2004/2/5

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前言:
目前本公司主要通过ORT测试来检验喷漆产品的
可靠性; 本公司ORT测试包括以下几种: a)酒精测试 b)橡皮测试 c)百格测试 d)硬度测试

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A.酒精测试: 方法1:用摩擦机.将棉毛毡固定到耐磨机的施力杆的底 端,然后把棉毛毡浸满酒精(酒精不能太湿以致下滴); 把需要测试的喷漆产品固定后,把棉毛毡放在产品上 摩擦. 1)棉毛毡接触产品表面的面积为(10+2/+0)*(10+2/+0)mm2 2)负荷为500g/cm2 3)移动距离为20mm,测试频率为50movements/minute.

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方法2:用线型耐磨机.将纱布固定到耐磨机的施力杆底 端,然后把纱布浸满酒精(酒精不能太湿以致下滴); 把需要测试的喷漆产品固定后,把纱布放在产品上 摩擦. 1)线型耐磨机为5700型(Logitech指定). 2)选择测试区必须显而易见 和平坦的. 3)负荷为350g,频率为25cycles/min.,移动距离为1英寸 (2.54cm). 根据不同客户的具体要求确定测试等级及棉毛毡、纱 布的规格,酒精测试等级如下:
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Type A B C D

Component Qualification 50 40 30 20

MP Qualification 40 30 20 10
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B.橡皮测试: 方法1:用摩擦机.将橡皮固定到耐磨机的施力杆的底端, 将需要测试的喷漆产品固定后,把橡皮放在产品上摩 擦. 1)橡皮接触产品表面的面积(10+2/+0)*(10+2/+0)mm2. 2)选择产品比较平坦的区域做测试. 3)负荷700g/cm2,移动距离为20mm,测试频率为 50movements/minute. 根据不同客户的具体要求确定测试等级及橡皮 的规格,橡皮测试等级如下:
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Type

Component Qualification
1800 1500

MP Qulification
1500 1200

A B

C
D

1250
700

1000
500
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方法2:用线型耐磨机.将橡皮固定到耐磨机的施力杆的底 端, 将需要测试的喷漆产品固定后,把橡皮放在产品上 摩擦. 1)线型耐磨机为5700型(是Logitech指定). 2)选择测试的区域必须显而易见和平坦的. 3)负荷为350g,频率为25cycles/min.,移动距离为1英呎 (2.54cm). 根据不同客户的具体要求确定测试等级及橡皮 的规格,橡皮测试等级如下:

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Type A

Component Qualification 180

MP Qulification 150

B
C B

150
125 70

120
100 50
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C.百格测试: 1)测试工具:百格刀 3M胶带 2)测试方法:在被测部件或色板表面选择一块无杂质 及刮伤的区域,用百格刀划10mmX10mm的方格; 用3M胶带贴在方格区,再用橡皮擦胶带,确保胶带 和产品完全黏在一起,放置10秒钟.然后以180? 角 将胶带瞬间拉起. 3)判定标准:对于喷漆表面,4B是允收的.(Logitech)
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Classification
BS EN ISO 2409:1992 0 ASTM D 3359 5B

PROPERTIES The edges of the cuts are completely smooth; none of the squares of the lattice are detached. Small flakes of the coating are detached at intersections; less than 5% of the area is affected. Small flakes of the coating are detached along edges and at inter-sections of cuts. The area affected is 5 to 15% of the lattice. The coating has flaked along the edges and on parts of the squares. The area affected is 15 to 35% of the lattice. The whole coating has flaked along the edges of cuts in large ribbons and whole squares have detached. The area affected is 35 to 65% of the lattice. Flaking and detachment worse than Grade 4 (0B ASTM D 3359).
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1 2 3 4

4B 3B 2B 1B

5

0B

BS EN ISO 2409

Surface of cross-cut area from which flaking has occurred (Example for six parallel cuts)

0

None

1

2

3

4

5

Greater than 65%
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D.硬度测试: 1)测试工具:硬度计、铅笔(HB,H1,H2,H3) 2)测试方法:
a.取出按客户规定的仪器与铅笔,把垫片放置于仪器前端下 方,目的是使仪器保持水平. b.用刀片削铅笔,使笔心凸出部分约3~5mm.并在砂纸上磨 平,再将铅笔插入仪器,使笔心与实验片接触后并固定 锁紧,测试时要将垫片移开. c.用拇指与中指抓在两个轮子中心,将仪器从后往前推约 1~2cm,即可移开仪器,用橡皮擦将划过的铅笔擦掉. d.看产品上是否有刮痕.
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Thanks!
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