型号: | Erichsen494 |
产地: | 德国 |
品牌: | 德国仪力信(ERICHSEN) |
评分: |
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ERICHSEN 耐擦洗试验机494 MC主要用于评估油漆
涂层的耐擦洗性
主要用于评估油漆
涂层的耐擦洗性. 测试参数可灵活设置也可用于客户
特殊的测试用途如测试清洁剂等.
测试原理(摘录原标准)
a) Test in accordance with DIN 53 778- 2 *)
The scrub body is a defined pig bristle brush, which
is charged with 250 g. The washing fluid is
continuously fed by a micro dosing pump. Whether
the contamination has been removed or the coating
is scrubbed through to the substrate, will be
checked after an agreed number of scrubbing
cycles.
*) withdrawn, replaced by DIN EN ISO 11998
b) Test in accordance with ASTM D 2486
The scrub body is a defined nylon brush, which is
charged with 454 g. The washing liquid is applied
manually during the test at regular intervals and in a
defined amount. For sharpening the wear effect of
the scrubbing action, a narrow thin strip of metal
sheet will be placed centrally and transversely to
the stroke direction unter the foil. The test result is
the number of double strokes up to scrubbed
through to the substrate.
c) Test in accordance with DIN EN ISO 11 998
The scrubbing body is a defined type of abrasive
pad **) loaded with 135 g, which is moistened prior
to the test only once with a defined quantity of the
washing fluid. After scrubbing strain (200 double
strokes) the mass loss per unit area of the coating
and the average layer thickness loss will be
determined.
**) Abrasive pad "3M Scotch Brite, No. 7448" can be obtained
from the local dealer.
工作原理
仪器底部螺丝可调水平,上面装有钢槽用于测试. 两
侧配备样品夹紧装置.通过精密地步进马达和微处理
器确保运行速度准确可靠,具有极高的重复性.
可旋转的摩擦刷固定架可以同时安装3个摩擦刷,这
样可以同时进行3个测试.
通过按键和6位显示屏进行操作,具有以下功能:
- 控制行程 (启动,停止,重置),
- 设置测试参数 (摩擦速度, 路径,摩擦次数),
- 可存储最多20个测试程序。
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