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Surface Defects and Causes of Seamless Steel Tubes
May 18, 2022
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The seamless steel tube is known as the "blood vessel" of industry. It is an important raw material for national industrial construction and national defense construction in the manufacturing of aircraft, ships, trains, automobiles, boilers, power stations, oil, steam, water and the development of mineral resources for geological drilling. Where it is needed, it is inseparable from it. It can be said that if you leave the seamless steel pipe, a lot of industrial development will be out of the question, such as petroleum, chemical, steel, machinery, military, aerospace and other industries.
The surface defect name of seamless steel pipes is the general standards mentioned in those kinds. Its causes are complex. There are hundreds of factors which can be listed. Sometimes, the same defects are caused by factors as many as dozens of defects and steel has a great relationship with them. This is why the production of seamless steeltubes is complicated.
Generally speaking, it is caused by several aspects.
1. Raw materials
Poor internal structure will cause internal folding, cracks in the tube wall, delamination, etc.
Poor surface quality of raw materials will cause external folding.
2. Process operation
Improper heating will cause internal folding, external folding, pipe wall cracks, separation and the inequality of wall thickness.
Improper tooling processing, materials, adjustment, use and other aspects will cause internal and external folding, uneven wall thickness, internal and external threads, pits and so on
3. Equipment
The equipment is mainly due to poor performance of equipment, loose, scraping and other reasons caused by folding, folding, uneven wall thickness, internal and external thread, scratch and so on.
In our daily lives, the specific defects of steel pipes and the production process can be examined to analyze the factors, and then the specific reasons can be determined based on the production site.
The surface defect detection
The profile meter is a precision instrument developed for surface defect detection. It is also suitable for online detection of seamless steel tubes. It can identify the defects of rolling material above 0.5mm. It is also can quickly identify the small and not easily detected defects.
The full coverage measurement method enables the equipment to carry out qualitative and quantitative detection of the folding, warping, pits, grooves, lugs, scratches, cracks and other defects on the surface of seamless steel tubes. The measurement software system can fit the cross section shape according to the measurement data of each sensor and intuitively display the cross section shape and key dimensions of rolled material on the software interface.
The profile meter is a precision instrument developed for the convenience of on-line surface defect detection. It is timely enough to allow the staff to understand the external surface condition of seamless steel tubes in production, so you can timely adjust the rolling mill and reduce the mass production of unqualified products due to the detection lag.
The surface defect name of seamless steel pipes is the general standards mentioned in those kinds. Its causes are complex. There are hundreds of factors which can be listed. Sometimes, the same defects are caused by factors as many as dozens of defects and steel has a great relationship with them. This is why the production of seamless steeltubes is complicated.
Generally speaking, it is caused by several aspects.
1. Raw materials
Poor internal structure will cause internal folding, cracks in the tube wall, delamination, etc.
Poor surface quality of raw materials will cause external folding.
2. Process operation
Improper heating will cause internal folding, external folding, pipe wall cracks, separation and the inequality of wall thickness.
Improper tooling processing, materials, adjustment, use and other aspects will cause internal and external folding, uneven wall thickness, internal and external threads, pits and so on
3. Equipment
The equipment is mainly due to poor performance of equipment, loose, scraping and other reasons caused by folding, folding, uneven wall thickness, internal and external thread, scratch and so on.
In our daily lives, the specific defects of steel pipes and the production process can be examined to analyze the factors, and then the specific reasons can be determined based on the production site.
The surface defect detection
The profile meter is a precision instrument developed for surface defect detection. It is also suitable for online detection of seamless steel tubes. It can identify the defects of rolling material above 0.5mm. It is also can quickly identify the small and not easily detected defects.
The full coverage measurement method enables the equipment to carry out qualitative and quantitative detection of the folding, warping, pits, grooves, lugs, scratches, cracks and other defects on the surface of seamless steel tubes. The measurement software system can fit the cross section shape according to the measurement data of each sensor and intuitively display the cross section shape and key dimensions of rolled material on the software interface.
The profile meter is a precision instrument developed for the convenience of on-line surface defect detection. It is timely enough to allow the staff to understand the external surface condition of seamless steel tubes in production, so you can timely adjust the rolling mill and reduce the mass production of unqualified products due to the detection lag.
