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Generally, the cold brittleness of high-precision cold-drawn tubes can be controlled.
Due to various factors, the performance of high-precision cold drawn tubes will also be affected, and its cold brittleness is one of them.
High precision cold drawn tubeIt contains many metal elements, so the cold brittleness of the product can be relatively increased through solid solution strengthening elements; in addition, the elements that form two phases are also beneficial in this regard. For example, as the carbon content in the cold drawn tube increases, the pearlite content in its structure will also increase, thereby increasing its toughness-brittleness transition temperature.
In addition, grain size is also one of the important influencing factors. Generally, coarsening of grains can promote the increase in the ductility-to-brittleness transition temperature. On the contrary, refinement of grains can reduce the cold brittleness tendency of the pipe. Therefore, this has become a widely used method to control the cold brittleness of high-precision cold drawn tubes.