What factors affect the quality of anti-corrosion steel pipes?
Release time:
2021-03-29
Anti-corrosion steel pipe is a type of specially controlled steel that is widely used. It is primarily employed for transporting fluid substances and is also extensively utilized as mechanical components. As a highly suitable controlled steel, it boasts outstanding properties that make it indispensable in social production and daily life. Therefore, for steel pipes, their quality directly determines their value and significance. So, what factors influence the quality of anti-corrosion steel pipes? Below, our editor will provide you with a detailed introduction.
Anti-corrosion steel pipe It is a type of specially controlled steel with extremely wide-ranging applications, primarily used for transporting fluid substances. At the same time, it is extensively employed as mechanical components. As a highly suitable controlled steel, it boasts outstanding properties that make it indispensable in social production and daily life. Therefore, for steel pipes, their quality directly determines their value and significance. So, what factors influence the quality of corrosion-resistant steel pipes? Below, our editor will provide you with a detailed introduction.
Cooling and Lubrication in Anti-corrosion Steel Pipe Production: The cooling quality of the piercing mandrel and rolling rolls not only affects their service life but also influences the control of the inner and outer surface quality of the finished product. The cooling and lubrication quality of the core rod, in turn, first impacts the inner surface quality of the steel pipe, wall thickness accuracy, and core rod consumption; it also affects the load during the rolling process.
Removal and Control of Foreign Matter on the Surface of Steel Pipe Billets: This refers to the timely and effective removal of iron oxide scale from both the inner and outer surfaces of raw tubes and semi-finished tubes prior to rolling deformation, as well as the control of re-oxidation. Additionally, nitrogen blowing and borax spraying treatments applied to the inner bore of the raw tubes, coupled with high-pressure water descaling at the entry points of the rolling and sizing (or reducing) processes, can effectively improve and enhance the quality of both the inner and outer surfaces.
Temperature is a key factor affecting the quality of steel tubes. First, the uniformity of the heating temperature of the tube billet directly influences the uniformity of the wall thickness and the quality of the inner surface of the pierced tube blank, thereby impacting the wall-thickness quality of the final product. Second, during rolling, the temperature level and its uniformity of the steel tube are closely related to the mechanical properties of the product delivered in the hot-rolled condition, as well as to dimensional accuracy—such as outer diameter—and surface quality. In particular, when the steel billet or tube billet is overheated or even burnt, it can lead to defective products.
In short, the factors influencing the quality of anti-corrosion steel pipes are multifaceted and often result from the combined effects of various factors. Therefore, it is essential to effectively control the major factors mentioned above.
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