Manufacturing process: 書短Generally, in terms of the工著 main shaft of the drum, according to the load c大讀onditions, it can be 木如divided into the following three typ新從es:

(2) The rotating shaft bears bending mo些為ment and torque at the sam志爸e time, such as the shaft of the tran都玩smission roller group; the 近員material of the shaft is gener問照ally rolled or forged car城電bon steel or alloy s綠又teel, the usual material is 聽文medium carbon steel, 校得and No. 45 steel is the mos樂樂t common material. Common計亮ly used, for shafts w她月ith large force and limited size嗎子, as well as shafts with speci美北al requirements, alloy steel can be us林銀ed, and the material i用土s 40 chrome. According to needs, th男司e shaft generally needs章唱 to undergo heat treatment o路大r surface strengthen鄉都ing treatment to impro秒文ve its mechanical properties. Per員不formance and wear resistance, 女場etc. At normal temperature, the differe科森nce in elastic modulus between alloy秒子 steel and carbon stee妹黑l is very small, so th報雜e use of alloy steel cannot impr藍雨ove the stiffness of the 用可shaft;