Fuel oil hose is common material in petrochemical industry. Because it can transport various oils such as hydraulic oil, lubricant, etc. But during the use, the will be various problems. While hose burst is one of the most common problems. Then what cause oil rubber hose burst?
In general, the reinforce layer rusting can cause oil rubber hose burst
If the steel wire rust, it will cause oil rubber hose burst. If the hose breaks, peel off the outer rubber layer and check the fuel hose. Then you can find that the steel wires near the break are rusty. While this is mainly due to the action of moisture or corrosive substances in the outer rubber layer. Then it weakens the strength of the fuel transfer hose. Then this cause the rubber fuel pipe to rupture under high pressure.
When this happens, it is usually accompanied by crack, scratch or severe deterioration of the outer layer. Then it causes the outer layer to lose its protective effect on the reinforce layer. At this time, first check and eliminate mechanical damage to the outer rubber layer. Then consider the chemical corrosion, high temp baking and other factors. After that, replace the rubber fuel hose.
However, there are also cases where the outer rubber layer is well but the reinforce layer ruptures. While the rupture is usually within 200mm of the hose joint. Most of the reasons are that the hose joint is not good in quality. Thus moisture enters the inner edge of the jacket. Then the reinforced layer absorbs moisture and cause rust. Then the oil transfer hose reduces its pressure resistance and cause rupture.
The flexible oil hose reinforce layer is not rusty. However, irregular wire breakage occurs along the length of the reinforce. While the main reason is that the hose is suffered from frequent impact force. There are many intersections between the steel wires. When the pressure inside the pipe changes greatly, these intersections will also shift with the change in pipe. Then the steel wires will rub against each other.