Copper-Tellurium Machinability
Copper-tellurium machinability improves the machinability of copper materials through fine tellurium inclusions that lead to short chip forms.
Physical-Chemical Mechanism of Action
Tellurium inclusions in copper change the crystal structure and mechanical properties of the material. These fine inclusions promote better machinability by initiating chip breakage along their extent.
Metallurgical Relevance & Welding Risks
The improved machinability leads to reduced chip breakage risk and improves shape stability during machining. However, too high tellurium content can increase resistance, which may lead to higher stress during welding.
Workshop Practice & Action Points
To take advantage of copper-tellurium machinability, aim for an optimal tellurium concentration (usually between 0.1% and 0.5%). Use suitable tools and techniques during welding to avoid chip breakage. At high tellurium content, stress may be higher, so careful control of the welding process is essential.