Introduction to Metallographic Microscope DM70
In addition to being used for identifying and analyzing the microstructure of various metals, alloy materials, and non-metallic substances, the metallographic microscope DM70 can also be widely used in the electronics, chemical, and instrumentation industries to observe opaque substances; Such as integrated circuits, electronic chips, printed circuit boards, liquid crystal panels, wires, fibers, coatings, and other non-metallic materials, research and analysis of surface conditions are also suitable for observation and analysis in medicine, agriculture and forestry, public security, schools, and scientific research departments. The metallographic image analysis system is equipped with a high pixel digital photography system, with multiple times optical zoom, which can continuously select various magnification ratios, and the image can be processed, edited, saved, and output (such as printing) by a computer or entered into multimedia systems and electronic mailboxes. It is a new technology synchronized with today's world in the field of microscopy. The professional quantitative metallographic image analysis system integrated into the system conducts real-time research and analysis on metallographic spectra, such as grain size measurement and grading; Measurement and rating of non-metallic inclusions; Measurement and rating of pearlite and ferrite content; Measurement and rating of graphite spheroidization rate of ductile iron; Analysis, statistics, and output of graphic and textual reports on decarburization layer, carburizing layer measurement, and surface coating thickness measurement.

Characteristics of the DM70 metallographic microscope
1. Equipped with a large field eyepiece and a long-distance flat field achromatic objective lens (without cover glass), the field of view is large and clear.
2. Configure a stage with a large range of movement that can move quickly and slowly.
3. Coarse and micro coaxial focusing mechanism, adjustable coarse and micro elasticity, equipped with locking and limiting devices, micro grid value: 2 μ m.
4. 6V/20W halogen lamp, adjustable brightness.
5. Three lens barrel, can freely switch between normal observation and polarized observation, and can perform 100% transparent photography.

Technical specifications of metallographic microscope DM70 model
1. Eyepiece (three lens, tilted 30 degrees, pupil distance adjustment range: 55-75mm)

2. Objective lens:

3. Optical magnification: 50X 100X 200X 400X 800X
4. System reference magnification: 50X-2600X
5. Illuminator: 6V/20W halogen lamp, adjustable brightness
6. Color filter set: yellow, blue, green, frosted glass
7. Polarization device: insertable polarizer and built-in polarizer for three eyes
8. Stage: (equipped with a quick moving device)
Three layer mechanical moving type, size: 250mm * 230mm, moving range: 154mm * 154mm [BMM-75]
Three layer mechanical mobile, size: 274 * 274mm, movement range: 203 * 203mm [BMM-75D standard configuration]
9. Coarse micro coaxial focusing mechanism, micro handwheel grid value: 0.002mm
10. Pupil distance adjustment range: 53-75mm
11. Converter: Five hole (outward facing ball and inward positioning)
12. Anti mold: a unique anti mold system.

Standard configuration of metallographic microscope DM70 model
1. 1 DM70 microscope host;
2. One pair of 10X/20X flat field eyepieces, including one 10X flat field dividing eyepiece;
3. One 5 ×/10 ×/20 ×/40 ×/60 ×/80 × long distance flat field achromatic objective lens each;
4. Mechanical stage (size: 280mmX270mm, movement range: 204mmX204mm);
5. One blue/green/yellow filter and one frosted glass;
6. 0.01mm micrometer;
7. Two spare fuses and two 6V/20W halogen lamps each;
8. One dust cover for the instrument;
9. One copy of the product manual;
10. One copy of product qualification certificate;

Computer imaging system
1. 0.5X CCD adapter lens
2. High pixel digital camera CCD
3. Image processing operation software

Digital imaging system
1. Professional digital camera adapter lens
2. 10 million pixel digital camera (recommended Nikon)

Optional parts for metallographic microscope DM70 model
1. Eyepiece:
Wide field of view WF16X (Φ 11mm)
Divide into 10X (Φ 18mm), with a grid value of 0.1mm per grid;
2. Objective lens: PL L50X (S)/PL L100X (S oil)/PL L100X (dry)
3. 0.4X/0.5X/1X/0.5 CCD interface with dividing ruler
4. Metallographic image measurement software
5. BH-2000 metallographic structure analysis software (quantitative)