Common troubleshooting of metallographic microscopes
The metallographic microscope is a high-power microscope that is mainly used for inspection and testing in the field of metallography. During long-term use of the equipment, some malfunctions are prone to occur that affect normal use. How to solve the mechanical failure of the metallographic microscope?
Common mechanical failures of metallographic microscopes include coarse adjustment of micromirrors, fine adjustment parts, objective lens converters, etc. Below, Fulian will tell you about the solutions:
The coarse adjustment part slides down or rises and falls with different tightness:
Automatic sliding down refers to the phenomenon that when the lens barrel, arm or stage of a metallographic microscope is stationary at a certain position, it automatically and slowly falls down under the action of its own weight without adjustment. The reason is that the gravity of the lens barrel, lens arm, and stage itself is greater than the static friction. The solution is to increase the static friction force so that it is greater than the gravity of the lens barrel or arm itself. For the coarse adjustment mechanism of the oblique tube and most binocular microscopes, when the mirror arm automatically slides down, you can use both hands to hold the anti-pulley on the inside of the coarse adjustment handwheel, and tighten both hands clockwise to stop the slide. , if it still doesn't work, it needs special repair.
The fine-tuning part is stuck and failed:
The fine-tuning part is installed inside the metallographic microscope. Its mechanical parts are small and compact, making it a delicate and complex part of the metallographic microscope. If the fine-tuning part of the equipment is stuck or fails, it should be repaired by professionals to avoid self-repair, which may cause more serious malfunctions to the microscope.
The objective converter positioning device is malfunctioning:
When the positioning device of the objective lens converter of a metallographic microscope fails, it is usually caused by damage such as deformation, breakage, loss of elasticity of the positioning spring, loosening of the fixing screws of the spring, etc. When replacing the shrapnel, do not tighten the fixing screws yet. You should calibrate the optical axis first, and then tighten the screws after the shaft is closed. If it is an internal positioning converter, you should unscrew the big head screw in the center of the rotating plate and remove the rotating plate before replacing the positioning spring. The optical axis correction method is the same as before. Be careful and careful when operating.
