Analysis of Iron Oxide Scale Defects in Hot-rolled Titanium Plate

With the increasing demand for high-performance materials in modern engineering fields, titanium alloys, as a lightweight, high-strength and corrosion-resistant material, are widely used in various fields. During the processing process, iron oxide scale defects in hot-rolled titanium plates are a common problem that needs to be dealt with. We plan to conduct an in-depth analysis of the oxide scale defects of hot-rolled titanium plates and explore their causes and countermeasures.
Causes of iron oxide scale defects:
1. Material quality issues: The initial material quality of titanium alloyis an important factor affecting the iron oxide scale. If there are small amounts, inclusions or impure substances in the raw materials, they may trigger oxidation reactions during the hot rolling process.
2. Problems that arise during the hot rolling process: The hot-rolled titanium plate undergoes rapid plastic deformation after being heated to a high temperature. Improper temperature control, insufficient rolling force, or rolling too fast may result in the formation of scale.
3. When in contact with oxygen: Titanium alloys tend to form iron oxide scale when in contact with oxygen at high temperatures. This contact may occur during rolling or after cooling if the material is not effectively protected and is still exposed to oxygen.
Iron oxide scale defects may:

1. Reduce material performance: The existence of iron oxide scale will reduce the strength, toughness and corrosion resistance of the titanium plate, thereby reducing the overall performance of the material. 2. Increased manufacturing costs: Additional process steps are required to remove or repair iron oxide scale, which will increase manufacturing costs. 3. Unstable product quality: Iron oxide scale will lead to unstable product quality, which may affect the reliability and service life of the product.

To reduce or avoid scale defects in hot-rolled titanium plates, first use high-quality raw materials to ensure that they are free of obvious errors and inclusions. Strictly control the temperature, rolling force and speed during hot rolling to prevent oxidation reactions from occurring. In high temperature environments, use nitrogen gas (such as nitrogen or nitrogen) to protect the titanium plate from oxygen contact. For titanium plates that have formed iron oxide scale, pickling or other surface treatment methods can be used to achieve this. Strict quality control measures are implemented, including non-destructive testing and significant microstructural analysis to detect and repair potential defects.
In short, the occurrence of scale defects in hot-rolled titanium plates is closely related to the hot-rolling process and post-processing process. By optimizing the hot rolling process and strengthening the control of the cooling process, the generation of scale can be reduced. Because it can adversely affect material performance, manufacturing and product quality. By taking appropriate measures, the occurrence and formation of iron oxide scale can be minimized and the quality and reliability of titanium alloy materials can be improved, thereby better meeting the needs of various engineering applications.