What is the influence of metal elements in the production of spiral pipe? Next we will give you an introduction.
Tungsten can improve the red hardness and thermal strength of spiral steel pipe, and can improve the wear resistance of spiral steel pipe.
Silicon can improve the hardness of spiral steel pipe, but plasticity and toughness decline, spiral steel pipe for electrician contains a certain amount of silicon, can improve the soft magnetic properties.
Chromium can improve the hardenability and wear resistance of spiral steel pipe, can improve the corrosion resistance of spiral steel pipe and oxidation resistance. In order to improve the corrosion resistance of anti-corrosion spiral steel pipe tube, the general anti-corrosion spiral steel pipe tube (black pipe) galvanized.
Sulfur is a spiral steel pipe in the harmful impurities, high sulfur spiral steel pipe at high temperatures for pressure processing, easy to brittle, usually called thermal embrittlement
The higher the carbon content, the higher the hardness of just, but its plasticity and toughness is worse.
Manganese can improve the strength of spiral steel pipe, can weaken and eliminate the adverse effects of sulfur, and can improve the hardenability of spiral steel pipe, high alloy spiral steel pipe (high manganese spiral steel pipe) with high manganese content has good wear resistance and other physical properties.
Phosphorus can make the spiral steel pipe plasticity and toughness decreased significantly, especially in the low temperature is more serious, this phenomenon is called cold brittleness. In the high quality spiral steel pipe, sulfur and phosphorus should be strictly controlled. But on the other hand, in the low carbon spiral steel pipe contains high sulfur and phosphorus, can make its cutting easy to break, to improve the cutability of spiral steel pipe is favorable.
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