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说明：参考块类型1是剩余磁化的金属圆盘，通过一个特殊的地方，造成治疗，粗，细裂缝网络已经产生了
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MTU-3参考试块MTU磁粉试块（MTU-3,ENISO9934-2:2002）GB/T15822.2
说明：
参考块类型1（MTU Nr.3）
说明：
参考块类型1是剩余磁化的金属圆盘，通过一个特殊的地方，造成治疗，粗，细裂缝网络已经产生了。磁场参考块在这些裂缝产生的杂散不同强度通量。更敏感检查媒体结果在一个更明显的迹象表明，相比迹象时低灵敏度。*钻孔更容易处理。
使用方法：
参考块类型1根据标准EN ISO9934-2（前说明“MTU试块”）用于显示磁粉探伤灵敏度的检查和监督
代理商。表面的剩余磁化参考块包含一个网络和粗细裂缝。与磁粉溶液浸泡或喷涂后，裂纹迹象评估。
应用范围：
参考块类型1浸泡或喷洒仔细检查介质混合。冗余检查介质应倒掉。然后裂纹迹象都被视为适当的照明条件下。然后，您应该检查的疲软迹象，因为这是在粒子敏感度的差异变得明显。
注意：
参考块类型1的裂纹迹象可能受到污染，强磁场或机械的影响。给予正确的适应症，参考块前应用的污垢，油，油脂和磁性粒子。因此，参考块，应清洗后，每个应用程序（用湿布擦拭）。参考块不应暴露在强磁场，如从MP裂纹探测器，磁化和消磁线圈，磁板，等，因为它们可能会影响到剩余场阻止通过改变磁场强度和方向。
Instructions:
Reference Block Type 1 （MTU Nr.3）
Description:
The reference block type 1 is a residually magnetized metal disc, where, caused by a special
treatment, a network of coarse and fine cracks had been generated. The magnetic field of the
reference block generates stray fluxes of different strength across these cracks. More sensitive
inspection media result in a more distinct indications as compared to the indications when lower
sensitivity is used. The central bore hole is made for easier handling.
Use:
The reference block type 1 according to EN ISO 9934-2 （former description "MTU test block"） is
used for checking and supervision of the indication sensitivity of magnetic particle crack detection
agents. The surface of the residually magnetized reference block contains a network of coarse and
fine cracks. After dipping or spraying with the magnetic particle solution, the crack indications are
evaluated.
Application:
The reference block type 1 is immersed or carefully sprayed with the well-mixed inspection medium.
Redundant inspection medium should be drained off. Then the crack indications are to be viewed
under appropriate lighting conditions. You should then inspect the weaker indications as this is
where differences in particle sensitivity becomes obvious.
Note:
The crack indication of the reference block type 1 may be affected by contamination, strong
magnetic fields, or mechanical influences. To give correct indications, the reference block should
be free of dirt, oil, grease and magnetic particles from former applications. Therefore, the reference
block should be cleaned after each application （wipe off with a wet cloth）. The reference block
should not be exposed to strong magnetic fields such as from MP crack detectors, magnetizing and
demagnetizing coils, magnetic holding plates, etc. as they may influence the residual field of the
block by altering the field strength and direction.
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