The corrosion resistance of gas hoses is mainly determined by the content of chromium. When the content of chromium is increased to 10.5% during operation, the corrosion resistance of steel during operation is obvious. The increase, to a certain extent, when the chromium content is higher, although the corrosion resistance can still be improved, it is not obvious. The reason is that when chromium is used to alloy steel, the type of surface oxide is changed to a surface oxide similar to that formed on pure chromium metal.
The tightly adhered chromium-rich oxide protective surface of the gas hose during operation can effectively prevent further oxidation during use. Such an oxide layer is very thin and can be seen through it when in use. The natural luster to the stainless steel surface allows the stainless steel to have a unique surface.
If the gas hose is damaged during use, the surface of the steel exposed to a certain extent will react with the atmosphere for self-repair, so that the passivation film can be reformed and continue to protect it to a certain extent. The metal reacts with oxygen in the atmosphere to form an oxide film on the surface.
The iron oxide formed by the gas hose on the ordinary carbon steel continues to be oxidized, so that the rust can be continuously enlarged, so that holes are finally formed to some extent, and paint or oxidation-resistant metal (for example, zinc, can be used). Nickel and chromium are electroplated to ensure the carbon steel surface, but as is known, this protection is only a film. If the protective layer is destroyed, the underlying steel begins to rust.
The gas hose is mainly made of imported modified raw materials in the process of production. To a certain extent, it is a high-tech product of corrugated pipe type, high toughness, high impact resistance, good bending performance, high temperature resistance and bright surface. Anti-friction, chemical corrosion resistance, flame retardant, electrical insulation >200MΩ, halogen-free environmentally friendly flame retardant, widely used in automotive wire harnesses, electronics, mechanical wire harnesses and other fields.
