Take a bottle of edible oil and put it in the refrigerator for a while. Then take it out and pour it into the bowl. It will become sticky, pour it slowly and hang on the wall. Change to the hot oil just from the top of the cooktop, the situation is completely different, the mobility is good, drilling into the seam quickly. The anti-corrosive sleeper is immersed in oil, and the temperature is not a small thing. The difference between hot and cold things is far.
The fibrous structure of the pine wood is like a stack of closely spaced thin pipes, with lines on the pipe walls and gaps between the pipes. Anticorrosive oil needs to be drilled in along these gaps to get into the wood. When the oil temperature is high, the viscosity is low, the mobility is good, and it runs along the seam like water. The oil is different when it is cool. The viscosity rises and becomes thick. The oil is blocked when it is half way through, and the oil behind cannot be pushed in. The same wood, the same time, hot oil can go deep, cold oil can only stick to the surface.
The benefit of temperature is not just the thinning of the oil. The wood itself will expand slightly due to heat, and the gap between the fibers will be opened, like widening the oil circuit. The fiber wall also becomes softer under the action of temperature, the resistance is reduced when the oil is squeezed away, and the walking is more smooth. The oil becomes thin at one end and the road widens at the other end. With the cooperation of both ends, the penetration efficiency comes up.
But the higher the temperature, the better. Too high, the fibers on the wood surface will be burned, the tissue will become loose and the strength will be reduced. Too low, the problem mentioned above returns, and the oil cannot move. Therefore, the workshop is stuck to this temperature, and it must be operated within a proper range. The specific degree is appropriate. Each family has its own experience according to the type and thickness of wood, not a matter of one size.
Once in the tank, there is not enough light and pressure. Vacuumize the tank to extract air from the fiber gap and make room for oil supply. Then the hot oil is filled in and pressurized to push the oil in. The temperature makes the oil thin and wide, and the pressure gives it a push. Only when the two forces are combined, the oil enters deep and moves evenly. Without the temperature, the oil enters only by the force of pressure, but it is not deep, the resistance is large and the efficiency is low. With less pressure, it is impossible to see the speed of hot oil seeping in and molecules running by themselves. Both have to.
Sleepers on heavy haul lines are pressed every day, and the oil has to go deep enough to carry it. The line of the mining area has large moisture, and the oil layer is the reliable base for wood. Sleepers on the bridge bear various forces and the elasticity depends on the wood itself. Oil immersion will directly affect the overall performance. No matter which line, the hot oil immersion step is the most important part of the whole corrosion prevention process, and it is easy to go after.
In the end, hot oil immersion is not a simple "bubble", but a result of temperature, pressure and time. How long can wood last and whether it can withstand the test of the environment? From this step, most of it is decided. Qingdao Tiehan makes oil-immersed sleepers. Since the moment when the sleepers are put into the tank, the temperature and pressure have not been discounted. The wood changed from light yellow to dark, and the inside and outside were saturated with oil. It was stable and used for a long time after being online.
