People who are in contact with industrial flanges know that the sealing requirements for flanges are very high, because the bearings are generally bearings, and the bearings are generally not easily disassembled during operation, so the metal The wound gasket plays a big role. If the sealing performance is not good, the butter or other oil and gas inside will leak or dry out.
How to use metal wound gaskets in traditional mechanical equipment, when metal wound gaskets do not appear, most companies often use parchment mats or do not use them, such as ordinary locomotive manufacturers, mainly in transmission A sheepskin mat is required between the bearing housing and the flange of the wheelset. Mainly because the parchment pad is easy to manufacture and inexpensive. However, the use of parchment mats is relatively short. If the butter is sealed, the butter will usually dry out for more than a year. Usually, the general locomotive manufacturer chooses to carry out a comprehensive maintenance in a year or so, that is, re-adding butter. Although metal-wound gaskets are now available, many locomotive experts are still using parchment mats, or simply do not use them, mainly to save costs.
It is possible to temporarily use a paper pad or a pad on the locomotive's bearing housing and flange. There will be no faults in a short time. After a long time, it is necessary to re-maintain the maintenance and oiling. But can some industries with higher sealing requirements do the same? For example, can we avoid the use of metal wound gaskets in the petrochemical industry? Of course it won't work. It is necessary to know that many oil spill accidents are caused by flange problems, but the main problem of leaks is that there is a problem with the metal wound gasket inside. Therefore, the flanges in electric power, ships, and pressure vessels must also use metal wound gaskets.