Metallurgy
Utilizing specialized sectioning, polishing, and etching techniques, Crane Engineering can evaluate heat treatment effectiveness, casting integrity, micro-hardness, and the microstructure of metal samples. Thermal processes are frequently used to alter the properties of metals. The quality and effectiveness of these processes can best be determined by metallographic techniques.
How it works:
- Samples are cut from the part of interest and mounted in epoxy or plastic for ease of handling.
- The sample is progressively ground and polished until a mirror finish is obtained.
- The sample is then etched with special chemical formulations to reveal the grain structure of
the sample. - The sample is examined using a special microscope called a metallograph.
- Digital photography can be utilized to record the structure of the specimen.
Uses:
- Determine heat treatment effectiveness in alloy steels.
- Measure case depth in carburized steels.
- Measure coating thickness such as anodizing on aluminum and zinc plating on steel.
- Evaluate the porosity and microstructure of castings.
- Evaluate carbides for size and distribution of carbide particles.
- Determine the grain size of steels.
- Determine the graphite size and type in cast iron.
- Evaluate quality of annealing in stainless steels.
- Measure depths of affected layers in laser cut parts or welded parts.
Please contact Dave Kramer for more specific details on Crane Engineering’s metallurgical capabilities.