The difference between the National Standard and the American Standard of Impact Specimen Notch Projector
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.
Hydraulic universal testing machines have very high accuracy requirements.
The hydraulic system is the power drive mechanism of the tensile testing machine.
The specific application of the electronic universal testing machine in the automobile manufacturing process: The electronic universal testing machine needs to be used for automobile parts.
Wave soldering refers to the molten solder (lead-tin alloy), sprayed by electric pump or electromagnetic pump into the solder wave required by the design, can also be formed by injecting nitrogen into the solder pool, so that it is pre-loaded The printed board of the component realizes the soft soldering of the mechanical and electrical connection between the solder end or the pin of the component and the pad of the printed board through the solder wave.
The frequency converter is a power control equipment that uses frequency conversion technology and microelectronics technology to control AC motors by changing the frequency of the motor's working power supply.
Electronic universal testing machine is a necessary equipment to control the quality of products.
The calibration operation of the electronic universal testing machine is still relatively unfamiliar to friends who use it for the first time.
Selective wave soldering defects and their prevention.
Testing machine, broadly speaking, is an instrument that verifies the quality or performance of a product or material according to the design requirements before it is put into use.
The tensile force is not an accurate value after being measured by the testing machine, and subsequent calculations are required to get the desired value.
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