铁路枕木的干燥,过去与新伐材一样,主要采用气干和爐干两种方法。气干成本低,但水分蒸发率慢,只能部分控制,而且决定于气候。爐干成本较高,但干燥较快,且木材中的含水量能加以控制。以一般铁路用的枕木来说,气干须18个月或更长一些时间,爐干约需7—9天。美国一家公司为加速枕木的干燥,已开始用一种碳化氢的溶剂“Shell sol”360,应用证明:能大大缩短 Railway sleepers dry, the past and the same as the new cuttings, mainly using air-dry and oven two ways. Air dry low cost, but the evaporation rate of water is slow, only part of the control, but also decided by the climate. Drying costs are higher, but drying is faster and the moisture content in the wood can be controlled. For railroad sleepers, air-drying takes 18 months or longer and the kiln takes about 7-9 days. To speed up the drying of sleepers, a company in the United States has begun to use a hydrocarbon solvent “Shell sol” 360, which proves to be much shorter