EN10160--德国超声检验规程(7)

该文件为德国超声波检验规程

配备有显示器和分贝调整放大器的超声检测仪器，或不具备显示器的仪器都可以使用。不具备显示器的仪器应能自动检测振幅并进行评价，其计量单位应校准为分贝。

It shall be possible to regulate amplification, power and time base.

放大（倍数）、功率和时基线（扫描发生器）都应是可调的。

The apparatus includes at least one probe which may be either a probe with a single transducer serving for both emission and reception (single probe) or a double transducer probe (separate emission-reception transducers). The mean direction of the waves emitted and received shall be perpendicular to the surface of the product.

仪器应包括至少一个探头。可以是单一的探头传感器服务于发射和接收（单探头），也可以是双传感器探头（单独发射单独接收传感器）。波的发射和接收的主要方向应垂直于表面的产品。

The probe shall have a frequency and dimensions such that the required sensitivity can be guaranteed throughout the extent of the test field.

探头须有一个适当的频率和形状以保证整个检测范围的区域所需的敏感性。

The single probes shall be such that their dead zone is as small as possible, i.e. 15 % of the flat product thickness or 15 mm whichever is the smaller. The focusing zone of the double transducer probes shall be adapted to the thickness of the flat product.

单探头，应使他们的探测死角尽可能小，譬如15 ％的钢板厚度或15毫米，看两者哪一个更小。双传感器探头的聚焦区应适应钢板的厚度。

The main dimensions of probes are 10 mm to 25 mm in diameter and the probes shall have a nominal frequency in the range of 2 MHz to 5 MHz. Probes of larger dimension and of a nominal frequency that is outside the range of 2 MHz to 5 MHz may be used for automatic or semi-automatic testing and/or when the flat product exhibits high attenuation provided that the main requirements of this standard are met.

探头的直径一般在10毫米至25毫米；探头的公称频率范围在2 至5兆赫。大规格和公称频率在2 至5兆赫范围以外的探头可用于自动或半自动测试和/或用于产品满足了这个标准的主要要求，而高衰减现象出现的情况下。

The type of the probe depends on the thickness of the flat product as given in table 1:

表一给出了不同钢材厚度所适用探头型号：

Table 1 - Type of probe 表一、探头的型号

sufficiently low for the discontinuities to be easily located taking into account the display delay of the screen, or fitted with a device which indicates the discontinuity.

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