Detailed description of the hardness tester operation process
1. Turn on the power of the hardness tester, rotate the test force to change the handwheel, and select the test force.
2, the hardness tester according to the direction key shift selection table, Table 1 is applicable to non-ferrous metals, Table 2 is applicable to ferrous metals, press ENTER key to confirm, the main screen pops up the conversion table, press ENTER key to confirm, the main screen status shows the selected hardness value Convert the ruler.
3. Press the arrow key to pop up the DWELL time-keeping menu and select the loading time.
4. Press the arrow keys to bring up the FUNCTION menu. Select the first option Single, press ENTER to confirm, the hardness tester begins to work.
5. Rotate the indenter and the objective lens to convert the cover so that the 10× objective lens is located directly in front of the main body.
6. Turn the lifting screw to raise the test bench until the surface of the sample is clearly imaged. Hardness Tester If the image observed in the eyepiece is blurred, turn the front lens of the eyepiece until it is clear.
7. Turn the conversion cover so that the pressure head is in front of the main body. Press the START button on the front panel to start loading, loading and unloading the hardness tester.
8. Rotate the conversion cover so that the 10× objective lens is located directly in front of the main body to observe the indentation image in the eyepiece.
9. Move the engraved line of the eyepiece so that it gradually closes. When the inside of the engraved line is infinitely close, when there is no critical position between the inner sides of the two engraved lines, press the panel CLR key, then the value of d1 on the main screen. Zero.
10. Move the right handwheel to separate the engraved lines and move the left side of the eyepiece to make the left scribe line move tangent to the left side of the indentation. Move the inside of the right scribe line to the intersection of the indented shape and press the eyepiece. The measurement button, the measurement of the diagonal d1 is completed, the eyepiece is rotated by 90 degrees, the diagonal d2 is measured, and the measurement button is pressed, and the main screen displays the value of the current measurement and the converted hardness value. One trial is over.
11. If the measurement is considered to be in error, repeat the above procedure to measure again.
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