Can a metallographic mounting machine mount mixed samples of multiple materials?

The metallographic mounting machine can mount mixed samples of various materials, but some factors need to be considered.
First, it is necessary to evaluate the thermal expansion coefficients of each material in the mixed sample; if the difference is too large, problems such as sample delamination and cracking may occur due to inconsistent expansion and contraction during the heating and cooling process.
For materials with large differences in hardness, appropriate mounting resin must be selected to ensure the resin provides good encapsulation for soft materials and effective support for hard materials.
Before mounting, pretreatment of the mixed sample is required, such as cleaning surface oil stains and impurities, ensuring the surfaces of each material are clean to facilitate resin infiltration and bonding.
In terms of process parameter settings, multiple tests may be needed to determine the best combination of temperature, pressure, and time to balance the needs of different materials. For example, for mixed metal and ceramic samples, where the metal has a relatively large thermal expansion coefficient and the ceramic has high hardness, a resin with better toughness can be selected, the heating and cooling speeds can be appropriately reduced, and the insulation and pressure holding time can be extended.

Kunshan Fuze Testing Equipment Co., Ltd. can provide customized solutions for mixed sample mounting needs, helping users successfully mount samples of mixed materials.