供应 热销 55号钢 合金结构钢 量大从优 - 供求

供应 热销 55号钢 合金结构钢 量大从优

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当前价: 电议
产品: 碳化钙(电石)
供应总量: 150.00 吨
所在地: 中国,浙江,嘉兴
有效期至: 2015/7/28
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杭州宝麦物资有限公司

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<p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 12px; text-indent: 2em; color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif; line-height: 24px;"> <span style="margin: 0px; padding: 0px; outline: 0px; font-size: 14px; font-family: arial, sans-serif; line-height: 25px;">55号钢:</span></p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 12px; text-indent: 2em; color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif; line-height: 24px;"> <span style="margin: 0px; padding: 0px; outline: 0px; font-size: 14px; font-family: arial, sans-serif; line-height: 25px;">为高强度中碳钢,经处理后有高的表面硬度和强度,但塑性、韧性较差,切削加工性能中等,焊接性、淬透性差,水淬具有形成裂纹的倾向。</span></p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 12px; text-indent: 2em; color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif; line-height: 24px;"> &nbsp;</p> <div style="margin: 0px; padding: 0px; outline: 0px; font-size: 12px; color: rgb(0, 0, 0); font-family: Arial, Helvetica, sans-serif; line-height: 24px;"> <div style="margin: -7px 0px 0px; padding: 0px; outline: 0px; font-size: 12px;"> <p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 12px; text-indent: 2em;"> 特性及适用范围:</p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 12px; text-indent: 2em;"> 为高强度中碳钢,经处理后有高的表面硬度和强度,但塑性、韧性较差,切削加工性能中等,焊接性、淬透性差,水淬具有形成裂纹的倾向。一般在正火或淬火后使用,用作要求较高的强度和耐磨性或弹性、动载荷及冲击负荷不大的零件,如齿轮、轮缘、扁弹簧、曲轴等,也可作铸件。</p> </div> </div> <p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 14px; text-indent: 2em; color: rgb(0, 0, 0); line-height: 24px; font-family: arial, sans-serif;"> 化学成份:</p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 14px; text-indent: 2em; color: rgb(0, 0, 0); line-height: 24px; font-family: arial, sans-serif;"> 碳 C :0.52~0.60&quot;</p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 14px; text-indent: 2em; color: rgb(0, 0, 0); line-height: 24px; font-family: arial, sans-serif;"> 硅 Si:0.17~0.37</p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 14px; text-indent: 2em; color: rgb(0, 0, 0); line-height: 24px; font-family: arial, sans-serif;"> 锰 Mn:0.50~0.80</p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 14px; text-indent: 2em; color: rgb(0, 0, 0); line-height: 24px; font-family: arial, sans-serif;"> 硫 S :&le;0.035</p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 14px; text-indent: 2em; color: rgb(0, 0, 0); line-height: 24px; font-family: arial, sans-serif;"> 磷 P :&le;0.035</p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 14px; text-indent: 2em; color: rgb(0, 0, 0); line-height: 24px; font-family: arial, sans-serif;"> 铬 Cr:&le;0.25</p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 14px; text-indent: 2em; color: rgb(0, 0, 0); line-height: 24px; font-family: arial, sans-serif;"> 镍 Ni:&le;0.30</p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 14px; text-indent: 2em; color: rgb(0, 0, 0); line-height: 24px; font-family: arial, sans-serif;"> 铜 Cu:&le;0.25</p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 14px; text-indent: 2em; color: rgb(0, 0, 0); line-height: 24px; font-family: arial, sans-serif;"> 轴类零件的功用、结构特点及技术要求</p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 14px; text-indent: 2em; color: rgb(0, 0, 0); line-height: 24px; font-family: arial, sans-serif;"> 轴类零件是机器中经常遇到的典型零件之一。它主要用来支承传动零部件。</p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 14px; text-indent: 2em; color: rgb(0, 0, 0); line-height: 24px; font-family: arial, sans-serif;"> 力学性能:</p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 14px; text-indent: 2em; color: rgb(0, 0, 0); line-height: 24px; font-family: arial, sans-serif;"> 抗拉强度 &sigma;b (MPa):&ge;645(66)</p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 14px; text-indent: 2em; color: rgb(0, 0, 0); line-height: 24px; font-family: arial, sans-serif;"> 屈服强度&nbsp;&sigma;s (MPa):&ge;380(39)</p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 14px; text-indent: 2em; color: rgb(0, 0, 0); line-height: 24px; font-family: arial, sans-serif;"> 伸长率 &delta;5 (%):&ge;13</p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 14px; text-indent: 2em; color: rgb(0, 0, 0); line-height: 24px; font-family: arial, sans-serif;"> 断面收缩率 &psi; (%):&ge;35</p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 14px; text-indent: 2em; color: rgb(0, 0, 0); line-height: 24px; font-family: arial, sans-serif;"> 硬度 :未热处理,&le;255HB;退火钢,&le;217HB</p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 14px; text-indent: 2em; color: rgb(0, 0, 0); line-height: 24px; font-family: arial, sans-serif;"> 试样尺寸:试样尺寸为25mm</p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 14px; text-indent: 2em; color: rgb(0, 0, 0); line-height: 24px; font-family: arial, sans-serif;"> ●热处理规范及金相组织:</p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 14px; text-indent: 2em; color: rgb(0, 0, 0); line-height: 24px; font-family: arial, sans-serif;"> 热处理规范:正火,820℃;淬火,820℃;回火,600℃。金相组织:索氏体。</p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 14px; text-indent: 2em; color: rgb(0, 0, 0); line-height: 24px; font-family: arial, sans-serif;"> ●交货状态:以不热处理或热处理(退火、正火或高温回火)状态交货。要求热处理状态交货的应在合同中注明,未注明者按不热处理交货。</p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 14px; text-indent: 2em; color: rgb(0, 0, 0); line-height: 24px; font-family: arial, sans-serif;"> 钢材交货状态硬度HBS10/3000,&le;|未热处理钢: 255</p> <p style="margin: 0px; padding: 0px 12px; outline: 0px; font-size: 14px; text-indent: 2em; color: rgb(0, 0, 0); line-height: 24px; font-family: arial, sans-serif;"> 钢材交货状态硬度HBS10/3000,&le;|退火钢: 217</p>