亚洲无码中字_亚洲欧美一级夜夜爽视频_久久都是精品国产_国产麻豆一精品一av一免费

<h1 style="color: rgb(0, 0, 0); font-size: 34px; font-family: 'Microsoft YaHei', SimHei, Verdana; font-weight: 500;"> 18Cr2Ni4WA</h1> <p style="word-wrap: break-word; margin: 5px 0px; color: rgb(0, 0, 0); font-family: 'sans serif', tahoma, verdana, helvetica; font-size: 12px; line-height: 18px;"> &nbsp;</p> <div style="word-wrap: break-word; color: rgb(51, 51, 51); margin: 15px 0px 5px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 18Cr2Ni4WA屬于高強度中合金滲碳鋼。要使C化物及奧氏體含量不超標可采用滲碳后高溫回火900~920℃滲碳，600~650回火，深冷處理，油淬后的硬度也就是48左右，想要達到HRC58-63，必須要進行表面滲碳。</div> <div style="word-wrap: break-word; color: rgb(51, 51, 51); margin: 15px 0px 5px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 18Cr2Ni4WA鋼常用合金滲碳鋼,強度，韌性高，淬透性良好，也可在不滲碳而調(diào)質(zhì)的情況下使用，一般用做截面較大，載荷較高且韌性良好，缺口敏感性低的重要零件。</div> <div style="word-wrap: break-word; color: rgb(51, 51, 51); margin: 15px 0px 5px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 化學(xué)成份</div> <div style="word-wrap: break-word; color: rgb(51, 51, 51); margin: 15px 0px 5px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 碳 C ：0.13～0.19</div> <div style="word-wrap: break-word; color: rgb(51, 51, 51); margin: 15px 0px 5px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 硅 Si：0.17～0.37</div> <div style="word-wrap: break-word; color: rgb(51, 51, 51); margin: 15px 0px 5px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 錳 Mn：0.30～0.60</div> <div style="word-wrap: break-word; color: rgb(51, 51, 51); margin: 15px 0px 5px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 硫 S ：允許殘余含量&le;0.025</div> <div style="word-wrap: break-word; color: rgb(51, 51, 51); margin: 15px 0px 5px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 磷 P ：允許殘余含量&le;0.025</div> <div style="word-wrap: break-word; color: rgb(51, 51, 51); margin: 15px 0px 5px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 鉻 Cr：1.35～1.65</div> <div style="word-wrap: break-word; color: rgb(51, 51, 51); margin: 15px 0px 5px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 鎳 Ni：4.00～4.50</div> <div style="word-wrap: break-word; color: rgb(51, 51, 51); margin: 15px 0px 5px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 銅 Cu：允許殘余含量&le;0.025</div> <div style="word-wrap: break-word; color: rgb(51, 51, 51); margin: 15px 0px 5px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 鎢 W ：0.80～1.20</div> <div style="word-wrap: break-word; color: rgb(0, 0, 0); font-family: arial, 宋體, sans-serif; font-size: 14px;"> &nbsp;</div> <h2 style="color: rgb(0, 0, 0); font-size: 24px; font-family: 'Microsoft YaHei', SimHei, Verdana; font-weight: 500;"> <span style="line-height: 24px; font-size: 16px; background-color: rgb(81, 156, 234); color: rgb(255, 255, 255);">2</span><span style="line-height: 24px;">力學(xué)性能</span></h2> <div style="word-wrap: break-word; color: rgb(51, 51, 51); margin: 15px 0px 5px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 抗拉強度&nbsp;&sigma;b (MPa)：&ge;1175(120)</div> <div style="word-wrap: break-word; color: rgb(51, 51, 51); margin: 15px 0px 5px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 屈服強度&nbsp;&sigma;s (MPa)：&ge;1029(105) <div style="word-wrap: break-word; border: 1px solid rgb(224, 224, 224); margin: 0px 0px 3px 20px;"> <img alt="18Cr2Ni4WA圓鋼" data-ke-="" src="http://e.hiphotos.baidu.com/baike/s%3D220/sign=4c1391fbbaa1cd1101b675228910c8b0/a50f4bfbfbedab64b780380bf736afc378311e0e.jpg" style="border: 0px; width: 165px; height: 220px;" /><span style="color: rgb(85, 85, 85); font-size: 12px; font-family: 宋體; line-height: 15px;">18Cr2Ni4WA圓鋼</span></div> </div> <div style="word-wrap: break-word; color: rgb(51, 51, 51); margin: 15px 0px 5px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 伸長率 &delta;5 (%)：&ge;10</div> <div style="word-wrap: break-word; color: rgb(51, 51, 51); margin: 15px 0px 5px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 斷面收縮率 &psi; (%)：&ge;45</div> <div style="word-wrap: break-word; color: rgb(51, 51, 51); margin: 15px 0px 5px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 沖擊功 Akv (J)：&ge;78</div> <div style="word-wrap: break-word; color: rgb(51, 51, 51); margin: 15px 0px 5px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 沖擊韌性值 &alpha;kv (J/cm&sup2;)：&ge;98(10)</div> <div style="word-wrap: break-word; color: rgb(51, 51, 51); margin: 15px 0px 5px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 硬度 ：&le;269HB</div> <div style="word-wrap: break-word; color: rgb(51, 51, 51); margin: 15px 0px 5px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 試樣尺寸：試樣毛坯尺寸為15mm</div> <h3 style="color: rgb(0, 0, 0); font-size: 18px; font-family: 'Microsoft YaHei', SimHei, Verdana; font-weight: 500;"> 熱處理規(guī)范及金相組織</h3> <div style="word-wrap: break-word; color: rgb(51, 51, 51); margin: 15px 0px 5px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 熱處理規(guī)范：淬火:第一次950℃,第二次850℃,空冷;回火200℃,水冷、空冷。</div> <h3 style="color: rgb(0, 0, 0); font-size: 18px; font-family: 'Microsoft YaHei', SimHei, Verdana; font-weight: 500;"> 交貨狀態(tài)</h3> <div style="word-wrap: break-word; color: rgb(51, 51, 51); margin: 15px 0px 5px; font-family: arial, 宋體, sans-serif; font-size: 14px;"> 以熱處理（正火、退火或高溫回火）或不熱處理狀態(tài)交貨，交貨狀態(tài)應(yīng)在合同中注明。</div> <div> &nbsp;</div>