How to validate metallurgical microscope
Metallurgical microscope how to validate: we often contact is the general general metallurgical microscope, it is mainly used for measuring the metal table machine metallurgical organisation test, the use of a wider range of enterprises, metallurgy and other departments to play an important role in the experiments, research is indispensable.
Metallographic microscope how to validate: the production of metallographic microscope manufacturers are more, models, specifications and not uniform, so the metallographic microscope test so far there is no national, local, departmental verification regulations, therefore, we based on the national standards for its testing. SHARPSCOPE metallographic microscope test items, methods and technical requirements:
1,Positioning error of objective lens converter
(1) 10 times the cross eyepiece.
(2) Scribing value of 0.01mm scribing ruler, the limit of deviation between any two lines of ± 0.005mm. Testing method: in the SHARPSCOPE metallographic microscope being tested on the converter mounted on the 40 times the objective lens, eyepiece tube 10 times the cross eyepieces, placed on the carrier stage on the 0.01mm scribing ruler focusing clear, so that a certain scribing on the scribing ruler scribing and eyepieces cross the centre of the overlap Then rotate the objective converter to the left and right several times to position (not less than 3 times), observe the offset of the 0.01mm dividing ruler image, and take the * large offset value as the detection value. Technical requirements: not greater than 0.02 mm.
2, Convert the objective lens when the ** image centre deviation:
(1) 10 times the cross dividing eyepiece.
(2) Two words dividing plate. Detection method: use 10 times cross-segmentation eyepiece and each magnification objective lens in the examined microscope to detect, to bias the * big value as the detection value. Technical Requirements: When switching from 10x objective lens to other magnification objective lenses, it is not out of the field of view.
3. Carrier stage rotation centre offset:
(1) 10x cross-segmented eyepiece. (1) 10x cross-segmented eyepieces.
(2) 2-word dividing plate. Detection method: In the examined SHARPSCOPE metallographic microscope with 10 times cross dividing eyepiece and 10 times objective lens placed on the carrier stage on the cross dividing plate focusing clear, in the rotation of the carrier stage at the same time move the cross dividing plate, so that the image of the centre of the crosshairs tends to be the smallest circle to the smallest diameter of the circle as the detection value. Technical requirements: the centre of the first image of SHARPSCOPE metallurgical microscope, the maximum offset is not more than 0.2mm.
4. Crosshair centre deviation of cross-section eyepiece: Inspection tool: cross-section plate. Detection method: In SHARPSCOPE metallurgical microscope with 10 times the objective lens and the eyepiece of the examined crosshair dividing board placed on the carrier stage to focus clearly, and make the image of the centre of the crosshair dividing board and crosshair dividing board eyepiece coincidence, and then rotate the crosshair dividing eyepiece, to the two crosshair centre of the maximum offset as the detection value. Technical Requirements: The centre of the crosshairs of the cross dividing eyepiece should coincide with the axis of the ascending circle of the eyepiece, and the deviation is 0.01mm.
