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The difference between the National Standard and the American Standard of Impact Specimen Notch Projector
by：Sinowon
2021-07-20
The impact sample notch projector is a test machine designed and developed according to the actual needs of domestic users and the requirements of GB/T229 and ASTM E23-02a for the impact of the impact sample notch. It is specially designed for checking Charpy V and U The special optical instrument for the processing quality of the notch of the impact specimen is used to determine whether the notch processing of the tested impact specimen is qualified. Its advantages are simple operation, intuitive inspection and high efficiency.
There are currently two types of impact specimen notch projectors on the market: one is the CST-50 GB impact specimen notch projector that meets the requirements of the national standard, and the other is the impact specimen notch projection that meets the requirements of the American/European standard. instrument. The difference between the two is that they meet different test standards, on the one hand, the detection accuracy is different, on the other hand, the equipment structure is different. Compared with the national standard equipment, the American standard impact specimen notch projector developed by the testing machine is marked with a clear scale on the screen, and is marked with tolerance zone, angle value and depth line, which can accurately read the notch error.
There are currently two types of impact specimen notch projectors on the market: one is the CST-50 GB impact specimen notch projector that meets the requirements of the national standard, and the other is the impact specimen notch projection that meets the requirements of the American/European standard. instrument. The difference between the two is that they meet different test standards, on the one hand, the detection accuracy is different, on the other hand, the equipment structure is different. Compared with the national standard equipment, the American standard impact specimen notch projector developed by the testing machine is marked with a clear scale on the screen, and is marked with tolerance zone, angle value and depth line, which can accurately read the notch error.
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