<*n class="apple-converted-*ce" style="text-indent: 2em; line-height: 18pt;"><*n lang="EN-US" style="font-size: 9pt; font-family: Arial; color: rgb(68, 68, 68); background-position: initial initial; background-repeat: initial initial;"> <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">*性能好<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">SK85<*n style="font-size: 9pt; font-family: 宋体;">弹簧钢<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">带<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> SK85<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">进口<*n style="font-family: 宋体;mso-ascii-font-family:Arial;mso-hansi-font-family:Arial;mso-bidi-font-family: Arial">弹簧钢材质成分<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> SK85<*n style="font-size: 9pt; font-family: 宋体;">弹簧钢<*n class="apple-converted-*ce" style="text-indent: 2em; line-height: 18pt;"><*n lang="EN-US" style="font-size: 9pt; font-family: Arial;"> <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">淬火回火后有较高硬度和*性<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">但热硬性低、淬透性差、易变形、塑性及强度较低。用作需要具有较高硬度和*性的各种工具<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">如形状简单的模子和冲头、切削金属的、打眼工具、木工用的铣刀、埋头钻、斧、凿、纵向手用锯、以及钳工装配工具、铆钉冲模等次要工具。<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">化学成份<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">:<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">碳<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">C:0.80~0.90<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">硅<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">Si:0.10-0.35<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">锰<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">Mn:0.10-0.50<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">硫<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">S:≤0.030<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">磷<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">P:≤0.030<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">铬<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">Cr:<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">允许残余含量<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">≤0.25<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">、<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">≤0.10(<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">制造铅浴淬火钢丝时<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">)<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">镍<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">Ni:<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">允许残余含量<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">≤0.20<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">、<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">≤0.12(<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">制造铅浴淬火钢丝时<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">)<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">铜<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">Cu:<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">允许残余含量<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">≤0.30<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">、<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">≤0.20(<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">制造铅浴淬火钢丝时<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">)<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">注<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">:<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">允许残余含量<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">Cr+Ni+Cu≤0.40(<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">制造铅浴淬火钢丝时<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">) <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">力学性能<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">:<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">硬度<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">:<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">退火<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,≤187HB,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">压痕直径<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">≥value="4.4" has*ce="False" negative="False" numbertype="1" tcsc="0" w:st="on">4.40mm;<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">淬火<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,≥62HRC <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">热处理规范及金相*<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">:<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">热处理规范<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">:<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">试样淬火<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">780~value="820" has*ce="False" negative="False" numbertype="1" tcsc="0" w:st="on">820<*n lang="EN-US" style="font-family:宋体;mso-bidi-font-family: 宋体"><*n lang="EN-US">℃,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">水冷。<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">交货状态<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">:<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">钢材以退火状态交货。经双方协议<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">也可以不退火状态交货。<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">根据《钢分类》标准<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">按照基本性能及使用特性一<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="font-size: 9pt; font-family: 宋体;">弹簧钢<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">属于机械结构用钢<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">;<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">按照质量等级<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">属于特殊质量钢<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">即在生产过程中需要特别严格控制质量和性能的钢。按照我国习惯<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="font-size: 9pt; font-family: 宋体;">弹簧钢<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">属于特殊钢<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">二<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">分类<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> . 1. <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">碳素<*n style="font-family: 宋体;mso-ascii-font-family:Arial;mso-hansi-font-family:Arial;mso-bidi-font-family: Arial">弹簧钢<*n class="apple-converted-*ce" style="text-indent: 2em; line-height: 18pt;"><*n lang="EN-US" style="font-size: 9pt; font-family: Arial;"> <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">碳素<*n style="font-family: 宋体;mso-ascii-font-family:Arial;mso-hansi-font-family:Arial;mso-bidi-font-family: Arial">弹簧钢的碳含量<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">(<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">质量分数<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">)<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">一般在<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">0.62%~0.90%<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">。按照其锰含量又分为一般锰含量<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">(<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">质量分数<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">)(0.50%~0.80%)<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">如<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">65<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">、<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">70<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">、<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">85<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">和较高锰含量<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">(<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">质量分数<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">)(0.90~1.20%),<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">如<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">65Mn<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">两类。<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> 2.<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">合金<*n style="font-family: 宋体;mso-ascii-font-family:Arial;mso-hansi-font-family:Arial;mso-bidi-font-family: Arial">弹簧钢<*n class="apple-converted-*ce" style="text-indent: 2em; line-height: 18pt;"><*n lang="EN-US" style="font-size: 9pt; font-family: Arial;"> <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">合金<*n style="font-family: 宋体;mso-ascii-font-family:Arial;mso-hansi-font-family:Arial;mso-bidi-font-family: Arial">弹簧钢是在碳素钢的基础上<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">通过适当加入一种或几种合金元素来****钢的力学性能、淬透性和其他性能<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">以满足制造各种弹簧所需性能的钢。合金<*n style="font-family:宋体;mso-ascii-font-family:Arial;mso-hansi-font-family:Arial; mso-bidi-font-family:Arial">弹簧钢的基本组成系列有<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">硅锰<*n style="font-family: 宋体;mso-ascii-font-family:Arial;mso-hansi-font-family:Arial;mso-bidi-font-family: Arial">弹簧钢、硅铬<*n style="font-family:宋体;mso-ascii-font-family: Arial;mso-hansi-font-family:Arial;mso-bidi-font-family:Arial">弹簧钢、铬锰<*n style="font-family:宋体;mso-ascii-font-family:Arial;mso-hansi-font-family:Arial; mso-bidi-font-family:Arial">弹簧钢、铬钒<*n style="font-family:宋体;mso-ascii-font-family:Arial;mso-hansi-font-family:Arial; mso-bidi-font-family:Arial">弹簧钢、钨铬钒<*n style="font-family:宋体;mso-ascii-font-family:Arial;mso-hansi-font-family:Arial; mso-bidi-font-family:Arial">弹簧钢等。在这些系列的基础上<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">有一些牌号为了****其某些方面的性能而加入了钼、钒或硼等合金元素。<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">此外<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">还从其他钢类<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">如****碳素结构钢、碳素工具钢、高速工具钢、不锈钢<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">选择一些牌号作为弹簧用钢。<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">中文名称<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">:<*n style="font-size: 9pt; font-family: 宋体;">弹簧钢<*n class="apple-converted-*ce" style="text-indent: 2em; line-height: 18pt;"><*n lang="EN-US" style="font-size: 9pt; font-family: Arial;"> <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">英文名称<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">:spring steel <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">定义<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">:<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">含碳量为<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">0.60%~0.95%<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">的碳钢<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">是经冷变形强化的一种较好的<*n style="font-family:宋体;mso-ascii-font-family:Arial;mso-hansi-font-family:Arial; mso-bidi-font-family:Arial">弹簧钢丝<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">用于制作各种弹簧。<*n class="apple-converted-*ce" style="text-indent: 2em; line-height: 18pt;"><*n lang="EN-US" style="font-size: 9pt; font-family: Arial;"> <*n style="font-size: 9pt; font-family: 宋体;">弹簧钢<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">主要是有好的弹性<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">又由于它是在动载荷环境条件下工作的<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">所以对制造弹簧的材质****主要的应有高的屈服强度<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">;<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">在承受重载荷时不引起塑性变形<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">;<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">应有高的疲劳强度<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">在载荷反复作用下具有长的使用寿命<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">;<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">并有足够的韧性和塑性<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">以防在冲击力作用下突然脆断。<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> 1. 65 <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">、<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">70 <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">、<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">85: <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">可得到很高强度、硬度、屈强比<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">但淬透性小<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">耐热性不好<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">承受动载和疲劳载荷的能力低<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">应用非常广泛<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">但多用于工作温度不高的小型弹簧或不太重要的较大弹簧。如汽车、拖拉机、铁道车辆及一般机械用的弹簧。<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> 65Mn <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">成分简单<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">淬透性和综合力学性能、脱碳等工艺性能均比碳钢好<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">但对过热比较敏感<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">有回火脆性<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">淬火易出裂纹<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">价格较低<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">用量很大。制造各种小截面扁簧、圆簧、发条等<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">亦可制气门弹簧、弹簧环<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">减振器和离合器*、刹车簧等。<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> 2. 55Si2Mn <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">、<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">60Si2Mn <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">、<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">60Si2MnA <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">硅含量<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">(Wsi)<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">高<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">(<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">上限达<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">2.00%),<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">强度高<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">弹性好。*回火稳定性好。易脱碳和石墨化。淬透性不高。主要的<*n style="font-family:宋体;mso-ascii-font-family:Arial;mso-hansi-font-family:Arial; mso-bidi-font-family:Arial">弹簧钢类<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">用途很广。制造各种弹簧<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">如汽车、机车、拖拉机的板簧、螺旋弹簧<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">汽缸安全阀簧及一些在高应力下工作的重要弹簧<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">磨损严重的弹簧。<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> 55Si2MnB <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">因含硼<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">其淬透性明显****<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">轻型、中型汽车的前后悬挂弹簧、副簧。<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> 55Si2MnB <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">我国自行研制的钢号<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">淬透性、综合力学性能、疲劳性能均较<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">60Si2Mn<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">钢好<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">主要制造中、小型汽车的板簧<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">使用效果好<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">亦可制其他中等截面尺寸的板簧、螺旋弹簧。<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> 3. 60Si2CrA 60Si2CrVA<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">高强度<*n style="font-family:宋体;mso-ascii-font-family:Arial;mso-hansi-font-family:Arial; mso-bidi-font-family:Arial">弹簧钢。淬透性高<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">热处理工艺性能好。因强度高<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">卷制弹簧后应及时处理消除内应力<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">制造载荷大的重要大型弹簧。<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">60Si2CrA<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">可制汽轮机汽封弹簧、调节弹簧、冷凝器支承弹簧、高压水泵碟形弹簧等。<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">60Si2CrVA<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">钢还制作****重要的弹簧<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">如常规*取弹钩弹簧、*碎机弹簧。<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> 4. 55CrMnA<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">、<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">60CrMnA <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">突出优点是淬透性好<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">另外热加工性能、综合力学性能、*脱碳性能亦好<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">大截面的各种重要弹簧<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">如汽车、机车的大型板簧、螺旋弹簧等。<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> 5. 60CrMnMoA<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">在现有各种<*n style="font-family: 宋体;mso-ascii-font-family:Arial;mso-hansi-font-family:Arial;mso-bidi-font-family: Arial">弹簧钢中淬透性****高。力学性能、*回火稳定性等亦好<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">大型土木建筑、重型车辆、机械等使用的超大型弹簧。钢板厚度可达value="35" has*ce="False" negative="False" numbertype="1" tcsc="0" w:st*tyle="text-indent: 2em; line-height: 18pt;"><*n lang="EN-US" style="font-size: 9pt; font-family: Arial;">35mm<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">以上<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">圆钢直径可超过value="60" has*ce="False" negative="False" numbertype="1" tcsc="0" w:st*tyle="text-indent: 2em; line-height: 18pt;"><*n lang="EN-US" style="font-size: 9pt; font-family: Arial;">60mm<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">。<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> 6. 50CrVA<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">少量钒****弹性、强度、屈强比和弹减*力<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">细化晶粒<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">减小脱碳倾向。碳含量较小<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">塑性、韧性较其他<*n style="font-family: 宋体;mso-ascii-font-family:Arial;mso-hansi-font-family:Arial;mso-bidi-font-family: Arial">弹簧钢好。淬透性高<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">疲劳性能也好<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">各种重要的螺旋弹簧<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">特别适宜作工作应力振幅高、疲劳性能要求严格的弹簧<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">如阀门弹簧、喷油嘴弹簧、气缸胀圈、安全阀簧等。<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> 7. 60CrMnBA <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">淬透性比<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">60CrMnA<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">高<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">其他各种性能相似尺寸更大的板簧、螺旋弹簧、扭转弹簧等。<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> 8. 30W4Cr2VA <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">高强度耐热<*n style="font-family: 宋体;mso-ascii-font-family:Arial;mso-hansi-font-family:Arial;mso-bidi-font-family: Arial">弹簧钢。淬透性很好。高温*松弛和热加工性能也很好<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">工作温度<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">500~C<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">以下的耐热弹簧<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">如汽轮机主蒸汽阀弹簧、汽封弹*、锅炉安全阀弹簧、<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">400t<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">锅炉碟形阀弹簧等。<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> 65Mn<*n style="font-size: 9pt; font-family: 宋体;">弹簧钢<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">锰****淬透性<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,φvalue="12" has*ce="False" negative="False" numbertype="1" tcsc="0" w:st="on">12mm<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">的钢材油中可以淬透<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">表面脱碳倾向比硅钢小<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">经热处理后的综合力学性能优于碳钢<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">但有过热敏*和回火脆性。用作小尺寸各种扁、圆弹簧、座垫弹簧、弹簧发条<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">也可制作弹簧环、气门簧、离合器*、刹车弹簧及冷拔钢丝冷卷螺旋弹簧。<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;"> 65mn <*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">强度<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">.<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">硬度<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">.<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">弹性和淬透性均比<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">65<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">号钢高<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">具有过热敏*和回火脆性倾向<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">水淬有形成裂纹倾向。退火态可切削性尚可<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">冷变形塑性低<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">焊接性差。受中等载荷的板弹簧<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">直径达<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">7value="20" has*ce="False" negative="True" numbertype="1" tcsc="0" w:st="on">-20mm<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">的螺旋弹簧及弹簧垫圈<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">.<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">弹簧环。高*性零件<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">如磨床主轴<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">.<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">弹簧卡头<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">.<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">精密机床丝杆<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">.<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">切刀<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">.<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">螺旋辊子轴承上的套环<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">.<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">铁道钢轨等<*n class="apple-converted-*ce" style="text-indent: 2em; line-height: 18pt;"><*n lang="EN-US" style="font-size: 9pt; font-family: Arial;"> <*n style="font-size: 9pt; font-family: 宋体;">弹簧钢<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">在冲击、振动或长期交应力下使用<*n lang="EN-US" style="text-indent: 2em; line-height: 18pt; font-size: 9pt; font-family: Arial;">,<*n style="text-indent: 2em; line-height: 18pt; font-size: 9pt;">所以要求<*n style="font-family: 宋体;mso-ascii-font-family:Arial;mso-hansi-font-family:Arial;mso-bidi-font-family: Arial">弹簧钢有高的*拉强度、弹性****限、高的疲劳强度。在工艺上要求<*n style="font-family:宋体;mso-ascii-font-family:Arial;mso-hansi-font-family:Arial; mso-bidi-font-family:Arial">弹簧钢有一定的淬透性、不易脱碳、表面质量好等<*n class="apple-converted-*ce" style="text-indent: 2em; line-height: 18pt;"><*n lang="EN-US" style="font-size: 9pt; font-family: Arial;"> 

<*n lang="EN-US" style="font-size: 10.5pt;">