Why is the performance of cs seamless pipe better than ordinary seamless pipe

Compared with ordinary seamless pipes, cs seamless pipes have simpler smelting process, good pressure processing performance, good cutting performance, and comprehensive mechanical properties are also better than ordinary seamless pipes, and even it has a lower cost than ordinary seamless pipes. . Therefore, many people are more inclined to choose cs seamless pipe.

The cs seamless pipe can have better performance because the alloying elements play a great role in the steel.

1. Improve the heat treatment process performance of steel
1) Refine austenite grains
Add Ti, V, Nb, Zr, AI, etc. to form fine carbide particles and prevent the growth of austenite grains
2) Improve the permeability of steel
Except for Co, other alloying elements can shift the steel "C" curve to the right, thereby improving the permeability of the steel
3) Improve the tempering resistance of steel
The secondary hardening alloy elements are dissolved in the martensite, which increases the difficulty of decomposing the martensite during tempering and delays the decrease in hardness W, Cr, V, Mo, etc.During tempering, special carbides will be formed, which will increase the hardness again, and the steel will be secondary hardened
4) Prevent the second type of temper brittleness
Temper brittleness is a phenomenon in which the toughness of steel decreases after tempering. The first type of temper brittleness occurs at ~300 °C, and this stage can be avoided by adding alloy steel. Rapid cooling after tempering, adding W, Mo to the steel

2. Improve the mechanical properties of steel
1) Produce solid solution strengthening Cr, Ni, Mn, Si and other alloying elements are dissolved in ferrite to form alloy ferrite and improve the strength of steel
2) Produce second phase strengthening
Mn, Cr, Mo, W, V and other alloying elements are added to the steel to form alloy cementite or special carbide to improve the strength of the steel.
3) produce fine grain strengthening
Ti, V, Nb, Zr, AI and other alloying elements form C compounds and N compounds, preventing the growth of austenite grains, thereby refining the structure after heat treatment and improving the strength and toughness of the steel

3. Make steel have special properties
1) Improve the corrosion resistance of steel
2) Improve the high temperature oxidation resistance of steel
3) Improve the high temperature strength of steel
4) Improve the impact wear resistance of steel
5) Improve the low temperature resistance of steel

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