DELL 信赖性测试标准(译文)

交

叉切或

x

)

。

For Conductive Coatings ONLY:

In order for conductive coatings to meet UL 746C requirements, the conductive coating must

meet a 4A or 4B minimum adhesion rating after the piece part or coupon has been subjected to

35C/90%RH for 14 days.

仅供导电涂层

:

为了使导电涂层满足

UL

746C< /p>

的要求，在零件或样品被置于

35

°

C

/90%

湿度环境中

14

天后，导电涂层必

须满足

4A

或

4B

的最低粘附等级。

Rate the adhesion in accordance with the following scales:

附着等级按照以下等级

:

5A

4A

3A

2A

1A< /p>

0A

No peeling or removal.

Trace peeling or removal along incisions or at their

intersection.

Jagged removal along incisions up to 1/16 in. (1.6

mm) on either side.

Jagged removal along most of incisions up to 1/8

in. (3.2 mm) on either side.

Removal from most of the area of the X under the

tape.

Removal beyond the area of the X.

5B

4B

3B

2B

1B

0B

Th e edges of the cuts are completely smooth; none

of the squares of the lattice is 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 intersections of cuts. The area

affected is 5% to 15%.

The coating has flaked along the edges and on

parts of the squares. The area affected is 15% to

35%.

The coating has flaked along the edges of cuts in

large ribbons and whole squares have detached.

The area affected is 35% to 65%.

Flaking and detachment worse than Grade 1B.

Pass Criteria:

通过标准

:

4A

minimum,

(trace

peeling

or

removal

along

incisions

or

intersection),

for

all

coating

technologies when using method A, (X-cut).

当使用方法

A

时< /p>

(X

切割

)

，所 有覆膜技术至少满足

4A

等级。

4B

minimum,

(less

than

5%

of

the

area

removed),

for

all

coating

technologies

when

using

method B, (cross-hatch).

当使用方法

B

时（交叉切割），所有覆膜技术至少满足

4B

等 级。

Adhesion classification scale is illustrated in

Figure 1

. Area calculation from any image analysis

software package, (e.g. ImageJ), may be used to calculate the affected areas.

附着分类等级如图

1

所 示。任何图像分析软件包

(

如

Imag eJ)

的面积计算，都可以用来计算受影响的区域。

___________________________________________ ________________________________________________

Page 3 of 13

___________________________ __________________________________________________ ______________

Figure 1

Classification of Adhesion Test Results

图< /p>

1

附着力试验结果的分类

5.2

Film Hardness by Pencil Test (ASTM D3363)

涂层硬度铅笔测试

(ASTM D3363)

Test Parameters:

测试参数

:

测试参数

Follow the test method as defined in the ASTM D3363 standard with a 500 gram loading. 2.0

mm calibrated Mitsubishi Uni pencils that meet the hardness scale described in section 5.1 of the

ASTM D3363 standard are required.

按照

ASTM

D3363

500

克载荷来测试的方法。需 要符合

ASTM

D3363

标准第< /p>

5.1

节所述

2.0 mm

校准过的三菱铅笔硬度等级。

Piece part test location for hardness test shall be determined by the piece part drawing.

If the

specific test location is not called out, test will be performed in the same area as color and gloss

measurements.

零件做 硬度试验的位置应由零件图确定。如果测试位置未指出，测试将在与颜色和光泽度测试相同的区域

进行。

Pencil preparation / use:

铅笔准备

Begin

testing

with

the

hardest

lead

in

an

environment

controlled

to

25

?

C

±

2

?

C,

50%

±

5%

relative humidity on a flat, firm, horizontal surface with the pencil positioned at a 45

?

angle to

____ __________________________________________________ _____________________________________

Page 4 of 13

___________________________ __________________________________________________ ______________

the surface. Repeat the process of selecting and testing with progressively softer leads until

a

lead is identified which fails to scratch the surface. Record the pencil hardness as the hardest

lead that will

not

scratch the surface, (scratch hardness). Repeat 3 times to confirm the accuracy

of your conclusion.

在温度

25

°

C±

< br>2

°

C,

相对湿度

5%

的环境中，基于一个平坦的、坚固的 、水平的表面，铅笔与上述表

面呈

45

°夹角，用最硬的铅开始测试，逐渐降低铅的硬度，重复选择和测试的过程，直到铅没有在表面留

下划痕。将该铅笔硬度记录为不会划伤表面的最硬铅笔硬度，

(

划伤硬度

)

。重复

3

次，确认结论的准确性。

Pass Criteria:

通过标准：

Checks shall be made by close visual inspection and fingernail feel. There shall be no visible

cuts or scratches per ASTM D3363 when viewed under cool white fluorescent light of 80 to 120

foot-candles at a distance of 18 inches, (460 mm). Inspectors should hold the part 30 degrees

from the horizontal plane and rotate the part 30 degrees to the left and right along the vertical

axis.

Pencil

hardness

is

indicated

by

the

hardest

pencil

that

will

leave

the

film

uncut

and

unscratched. Any defacement of the surface other than a cut (gouge) is considered a scratch. In

some cases pencil lead transfer to the surface may be

misinterpreted as a scratch. Verify that

scratches

are

indeed

scratches

by

removing

any

residual

pencil

lead

marks

with

dry

or

moist

cloth before making the scratch determination.

检查应通过近距离的目视检查和手指甲感受来进行。当 在

18

英寸

(460

< br>毫米

)

远、照度

80

120

英尺烛

光的白冷 光源下观看时，应当没有可见的划伤或划痕（

ASTM D3363

）。检查人员应将零件保持在与水平面

成

30

度的平面上，并沿垂直轴左右旋转

30

度进行检查。 铅笔硬度由无划伤、无划痕膜层实验反映的最硬

铅笔硬度决定。除了切割

(

凿孔

)

外，表面的任何损坏 都被认为是划痕。在某些情况下，铅笔芯的痕迹可能会

被误解为划痕。在做出划痕是否真 实的决定前，先用干布或湿布去除残留的铅笔痕迹，以验证划痕确实是

划痕。