Small-sized bars of titanium and titanium alloys are generally produced by rolling. However, during heating, rolling, and heat treatment, due to uneven distribution of temperature and plastic workability, as well as shearing, transportation and stacking, etc. Different degrees of bending is often produced. At this time, the titanium rod must pass through the straightening place to ensure that the bending degree of the rod can meet the requirements of use.
The commonly used straightening methods for titanium rod processing include pressure straightening and roller straightening, while small-sized bars generally use roller straightening, which has higher efficiency. However, for small-sized titanium and titanium alloy bars, the desired effect is often still not achieved after repeated straightening, and the problem of direct fracture during the straightening process often occurs.
The room temperature elastic modulus of commonly used titanium and titanium alloys is mostly lower than 120GPa. Therefore, titanium and titanium alloy bars will undergo greater elastic deformation under stress conditions under relatively small rolling production, and the rebound will be large. He plastic is easy to straighten, and the yield ratio of many titanium alloys is between 09-1. For reasons such as straightening, it is easy to break during straightening. Therefore, titanium and titanium alloy bars generally require hot straightening at the over-straightening point to ensure the straightening effect.
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