为了解决极少量的弹簧回火问题,现介绍一种简易弹簧回火法: 1.细弹簧回火(φ1.5mm以下的钢丝):其方法是将弹簧外面包上数层旧报纸,放在煤油中浸透后取出点燃,当报纸燃尽后,马上将弹簧放入水中冷却,即可达到回火的目的(报纸层数可根据钢丝粗细而定)。 2.较粗(φ3mm以下钢丝)弹簧回火:可用一根比 In order to solve a very small amount of spring tempering problem, now introduce a simple spring tempering method: 1. Fine spring tempering (φ1.5mm below the wire): The method is to wrap the spring several layers of old newspapers, on After kerosene soaked out ignited, when the newspaper burn out, the spring will be placed in the water cooling, you can achieve the purpose of tempering (newspaper layers according to the thickness of the wire may be). 2. Coarse (φ3mm below the wire) Spring tempering: Available a ratio