Analysis On The Significance Of Cold Deformation Strengthening Of Precision Steel Tubes

Most of the precision seamless steel tubes produced on the market are made by heat treatment. The prelude needs vacuum annealing. The lower the annealing temperature, the higher the vacuum requirement. In this process, it needs to be extremely complicated. In terms of the process, the precision steel pipe is technically more demanding, so this pipe material will have such a significant advantage in terms of quality.

Investigating the quality of precision steel tubes, we must also consider the content and significance of cold deformation strengthening. First, we need to consider the specific materials and means of strengthening, because there are many materials that cannot be strengthened by heat treatment. Therefore, this method of strengthening cold deformation is particularly important, and considering it in a longer-term direction, the cold treatment method can improve the safety of the precision steel pipe during use, and therefore, the advantages of the pipe material appear to be more It is obvious, so the promotion degree is also relatively high.

In addition, seamless steel tubes occupy an important position in the national economy. Maybe friends are not very familiar with them, but it has been widely used in petroleum and chemical industries, and can replace spiral submerged arc welded steel pipe for pressure fluid transportation. Submerged arc welded pipes have brought great convenience to people's lives. Seamless steel tubes are also divided into many categories, of which stainless steel tubes are widely used in real life.

The hot-rolled seamless steel pipe can damage the cast structure of the steel ingot, refine the grain of the steel, and eliminate the defects of the microstructure, thereby making the steel structure dense and the mechanical properties improved. This improvement is mainly reflected in the rolling direction, so that the steel is no longer an isotropic body to some extent; bubbles, cracks and looseness formed during casting can also be welded under high temperature and pressure.

The flexible seamless steel tube has a four-layer structure, the innermost layer is an extruded thermoplastic tube that seals in the transport liquid; the central two-layer lining is filled with a carbon-filled polyethylene tube, which has a long-term exposure to ultraviolet light. The ability to radiate and remove external static electricity. The outermost layer is an extruded, thick outer shroud that is used to maintain the bottom layer of the tube from external influences.

The additional pressure for the specification of flexible seamless steel tubes meets the ANSI classification, such as grade 300 is equivalent to 5.15 MPa; grade 400 is equivalent to 6.89 MPa; grade 600 is equivalent to 10.3 MPa. The design of offshore flexible seamless steel pipes is based on API17J, 17K and RP17B. The design specifications for flexible steel pipes for land slightly deviate from the requirements of the API specification. The API17J classification method and data are used, and the pressure, tensile force and damage limit are within the limits of the rules. The experiment was carried out in accordance with the requirements of APIRP17B.

It is not difficult to find in the life that the garden fences and stair railings that people see are stainless steel pipes. Stainless steel tubes are precision-sized for easy installation. It also has good corrosion resistance and, therefore, reduces many unnecessary expenses, especially when used as a garden fence, it will not corrode in a humid environment. The stainless steel tube also has a strong toughness, but this toughness is directly related to the size of the small hole diameter. When used as a support, the diameter of the small hole of the stainless steel tube is often smaller than the diameter of the small hole used as a guardrail.

A worker from a steel pipe company, which is located in China.