Metallographic mounting machine, also known as metallographic specimen, is a type of mounting machine (hereinafter referred to as mounting machine). It is suitable for thermosetting plastic pressing of tiny metallographic specimens that are not shaped and are not easy to handle. After forming, the sample can be easily ground and polished, and it is also conducive to measuring the microstructure under a metallographic microscope.
In the process of sample preparation for metallographic analysis, the direction of the observation surface before being ground and polished is generally adjusted by using inlay resin to fix the direction of the sample. At the same time, inlay can turn irregular samples into a shape that is convenient for handholding, thus making it easier to control grinding and polishing. The process of fixing the direction and standardizing the shape of the sample is called the mosaic of metallographic samples. Later, with the emergence of automatic sample grinding and polishing methods and equipment, the mosaic of metallographic samples became the method of unifying and unifying the shapes of various irregular-shaped samples. Standardized to make it a universal method that can be easily applied to automatic grinding and polishing equipment.
Metallographic mounting usually refers to the process of using thermosetting resin to wrap a metal sample and cooling it to shape after a certain temperature and pressure. This heating and molding equipment is called a metallographic mounting machine or metallographic hot mounting. prototype.
- Metallographic hot mounting machines are divided into manual and simple types. The mounting process is controlled by electronic heating, manual pressurization, and natural air cooling. It is characterized by simple structure and easy operation. The disadvantage is low efficiency;
- Automatic and high-efficiency type, the inlay process is fully automatically controlled, intelligent temperature control and heating, air pressure or hydraulic dynamic automatic control and pressurization, intelligent water-saving cooling control, high sample preparation efficiency and good quality.
For the parameters of the fully automatic hot mounting machine, you can refer to the following important indicators:
1 Heating power and heating method: The greater the power, the higher the maximum temperature that can be applied, and the more types of hot inlay resins can be adapted. The more heating directions, such as 360-degree surround antipyretic, the faster the heating speed, and the integrated heating and cooling means accurate heating and temperature control.
- Pressurization capacity and method: The larger the pressure is adjustable, the more suitable sample types and mosaic powder types are applicable; the pneumatic pressurization method has fast response and is clean; the hydraulic pressurization method has accurate and stable pressure control.
- Mold cavity matching capabilities: such as mold cavity size, whether the mold is the same, etc.
- Operation convenience: whether the feeding method is convenient, whether the sample introduction is convenient and safe, etc.
