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Rockwell hardness tester installation and commissioning process
Browse: Release Date: 2019-08-05
Rockwell hardness tester installation and commissioning process

1. Check that the machine is level.
2. Open the upper and rear covers of the machine, remove the two fixing bolts of the fixing block behind the large lever, and remove the fixing block and the fixed support block under the large lever; loosen the two nuts on the weight fixing platen, and take After the two hook screws are out, remove the weight support block from the back of the machine; adjust the weight group so that the cylindrical pin on the weight group falls into the groove of the weight bracket. Remove the fastening rope from the small lever.
3. Check if the hardness tester is in working condition.
1) Whether the large hand of the dial is pointing up vertically and the small hand is close to the black point. (The position of the pointer can be adjusted by the zero adjustment screw in the middle of the adjustment block above the small lever. First loosen the screw of the zero adjustment screw, and then turn the adjustment screw left and right to make the dial pointer in a vertical upward position.)
2) Check that the unloading handle should be in the unloading position.
3) Check whether the cylindrical pins on the weight group fall into the grooves of the weight bracket and the position is straight down.
4) Check that there is no burr on the upper end surface of the screw and the large plane of the table and the assembly surface of the table. Install the table, pay attention to work with the screw, there should be no gap, and the lower surface of the table cannot touch the screw protection sleeve. .
5) Check whether the three-and-a-half strokes are correct. Loosen the two top wires on the main shaft seat, and adjust the shape nut in the main shaft seat. The adjustment is greater than three and a half clockwise adjustments, and less than three and a half anti-clockwise adjustments.
4. Change the diamond indenter, rotate the variable load handle to 150KG, push the HRC hardness block 20 degrees and 60 degrees respectively, and push the block a few times on the workbench, then turn the handwheel to slowly raise the workbench, and lift the indenter No pause or reversal is allowed in the middle until the short pointer points to the red dot, and the long pointer rotates clockwise three times vertically upwards, allowing a difference of ± 5 scales. If more than 5 scales, this point should be invalidated and re-experimented.
5. Rotate the movable dial to align the long hands with the long engraved lines between C and B.
6. Slowly pull the loading handle on the right side of the motor wall forward. At this time, you can see the front swing of the unloading handle. The large pointer rotates counterclockwise. The pointer reverses to the slow stop time 4 ± 2 seconds. At this time, slowly push back the unloading handle. The scale indicated by the pointer is the hardness value. If the hardness values of 20 degrees and 60 degrees are both too high or too low, you can adjust the hardness adjustment block on the small lever to adjust the hardness back, and reverse the previous adjustment. If the hardness value is earned, check that there is no gap between the small lever and the small lever seat, and that there is no gap between the small lever and the dial ring. Is there any friction between the large lever and the weight ring? Check friction of the tip of the zeroing screw.

Foshan Jingjie Measurement Instrumentation Equipment Co., Ltd.

Company Name: Foshan Jingmei Measurement Instrumentation Equipment Co., Ltd.

Headquarters
Tel / Fax : 0757-29289282
Address: 2008, 2nd Floor, Block 17, Shunlian Machinery City, Chencun Town, Shunde District, Foshan City, Guangdong Province
Contact: Manager Qi
Mobile : 13889943666
QQ: 975802545 WeChat: 13889943666
Website: wxetech.com E-mail: fsjcyq@163.com

Zhongshan Zhuhai Jiangmen Zhaoqing

:13392761923 Mobile : 13392961923
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