铸件冷却时间的计算
发布时间：2020-04-27 13:17
<section><span style="margin: 0px; padding: 0px; font-size: 16px;">为防止铸件在浇注后因冷却过快而产生变形、裂纹等缺陷，保证铸件在清砂时有足 够的强度和韧性，铸件在型内应有足够的冷却时间。连续生产的铸件应设计有足够的冷却段长度，以保证铸件的冷却时间。</span></section><p><section><br/></section><section><span style="margin: 0px; padding: 0px; font-size: 16px;">铸件的型内冷却时间与铸件的重量、壁厚、复杂程 度、合金种类、铸型性质、生产条件等多种因素有关。</span></section><section><span style="margin: 0px; padding: 0px; font-size: 16px;"><br/></span></section><section><span style="margin: 0px; padding: 0px; color: rgb(123, 12, 0); font-size: 18px;"><strong style="margin: 0px; padding: 0px;">一、铸铁件在砂型内的冷却时间 </strong></span></section><section><span style="margin: 0px; padding: 0px; font-size: 16px;"><br/></span></section><section><span style="margin: 0px; padding: 0px; font-size: 16px;">铸铁件在砂型内的冷却时间是根据开箱时的温度来确定，可参考下列数据：一般铸 件为300-500℃；易产生冷裂与变形的铸件为 <span style="margin: 0px; padding: 0px; font-family: DY4; color: rgb(0, 0, 0);">200-300℃</span>；易产生热裂的铸件为800-900℃。开箱后立即去除浇冒口及清除砂芯，再放入热砂坑中或进炉缓慢冷却。</span></section><section><br/></section><section><strong style="margin: 0px; padding: 0px;"><span style="margin: 0px; padding: 0px; font-size: 16px; color: rgb(255, 76, 0);">1.<span style="margin: 0px; padding: 0px; font-family: DY4;"> </span>铸铁件在砂型内的冷却时间通常可参考表11-2-1<span style="margin: 0px; padding: 0px; font-family: DY4;"> </span>表 <span style="margin: 0px; padding: 0px; font-family: DY4;">11-2-3 </span>进行选择。</span></strong></section><section><br/></section></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal; text-align: center;"><img class="rich_pages" src="https://mmbiz.qpic.cn/mmbiz_png/TCIDp9rFWaY2OuRV7ZSojzibOibBFa2zdlWZJbsf0Q2ibVJs9CYYtW1KSoC6yEDPpLElz5TuX1MjkOWTE11xOib1Xw/640?wx_fmt=png"/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal; text-align: center;"><br/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal; text-align: center;"><img class="rich_pages" src="https://mmbiz.qpic.cn/mmbiz_png/TCIDp9rFWaY2OuRV7ZSojzibOibBFa2zdlKAzibPX6icCYJiaHCnHciahjkOX7t1JQjnQ6fq5mYWNRcbMMibweVwbHyXA/640?wx_fmt=png"/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal; text-align: center;"><br/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal; text-align: center;"><img class="rich_pages" src="https://mmbiz.qpic.cn/mmbiz_png/TCIDp9rFWaY2OuRV7ZSojzibOibBFa2zdlOuQyNQY2UX7zYcyId4PVUQKeTtjPYbeLNEloMSSibriaGPHRPaNPRO0w/640?wx_fmt=png"/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal; text-align: center;"><br/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal;"><span style="margin: 0px; padding: 0px; color: rgb(255, 76, 0);"><strong style="margin: 0px; padding: 0px;"><span style="margin: 0px; padding: 0px; font-size: 16px;"><span style="margin: 0px; padding: 0px; font-family: DY5;">2. </span>重大铸铁件的型内冷却时间可按下述经验公式进行计算。</span></strong></span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal;"><br/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal;"><br/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal; text-align: center;"><img class="rich_pages" src="https://mmbiz.qpic.cn/mmbiz_jpg/TCIDp9rFWaY2OuRV7ZSojzibOibBFa2zdl53WzKkusIGTicVWppqq0WzoBB9z8jQ6LzDYMdwBlsRWPtv8ODkiaZejQ/640?wx_fmt=jpeg"/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal; text-align: center;"><br/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal;"><br/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal;"><span style="margin: 0px; padding: 0px; font-size: 16px;"><span style="margin: 0px; padding: 0px; font-family: DY6; color: rgb(0, 0, 0);">k</span>是铸件的重量与其轮廓体积比。k<span style="margin: 0px; padding: 0px; font-family: DY6; color: rgb(0, 0, 0);"> </span>值越大，意味着铸件的壁厚越厚，冷却时间越长。<span style="margin: 0px; padding: 0px; font-family: DY6; color: rgb(0, 0, 0);">k</span>的计算公式为</span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal;"><br/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal;"><br/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal; text-align: center;"><br/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal; text-align: center;"><img class="rich_pages" src="https://mmbiz.qpic.cn/mmbiz_png/TCIDp9rFWaY2OuRV7ZSojzibOibBFa2zdlKZo8icz50KhsecB4SEpC24lPqkGtjaWRAQtkAc7f7mG4ia0KA41YhKzA/640?wx_fmt=png"/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal; text-align: center;"><br/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal;"><strong style="margin: 0px; padding: 0px;"><span style="margin: 0px; padding: 0px; color: rgb(123, 12, 0); font-size: 18px;">二、铸钢件在砂型内的冷却时间</span></strong></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal;"><br/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal;"><span style="margin: 0px; padding: 0px; font-size: 16px;">水力清砂、喷丸清砂和风动工具清砂的铸钢件，应在砂型内冷却到250-450℃落砂。高于 450℃落砂可能引起铸件变形与裂纹。在砂型内冷却时间可参考图11-2-1<span style="margin: 0px; padding: 0px; font-family: DY5; color: rgb(0, 0, 0);"> </span>图 <span style="margin: 0px; padding: 0px; font-family: DY5; color: rgb(0, 0, 0);">11-2-3</span>所示。 </span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal;"><br/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal;"><span style="margin: 0px; padding: 0px; font-size: 16px;">使用上述三图时，应注意下列几点： </span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal;"><span style="margin: 0px; padding: 0px; font-size: 16px;"><br/></span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal;"><span style="margin: 0px; padding: 0px; font-size: 16px;">（<span style="margin: 0px; padding: 0px; font-family: DY5; color: rgb(0, 0, 0);">1</span>）碳钢铸件重量超过110t时，在按图11-2-2 查取与110t对应的冷却时间值的 基础上，每增加 <span style="margin: 0px; padding: 0px; font-family: DY5; color: rgb(0, 0, 0);">1t </span>重量，增加冷却时间1-3h。</span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal;"><br/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal;"><span style="margin: 0px; padding: 0px; font-size: 16px;">（<span style="margin: 0px; padding: 0px; color: rgb(0, 0, 0); font-family: DY5;">2</span>）<span style="margin: 0px; padding: 0px; color: rgb(0, 0, 0); font-family: DY5;">ZG310-570 </span>和合金钢铸件重量超过8.5t<span style="margin: 0px; padding: 0px; color: rgb(0, 0, 0); font-family: DY5;"> </span>时，冷却时间可比按图11-2-1<span style="margin: 0px; padding: 0px; color: rgb(0, 0, 0); font-family: DY5;"> </span>和图 <span style="margin: 0px; padding: 0px; color: rgb(0, 0, 0); font-family: DY5;">11-2-2</span>查取的碳钢铸件的冷却时间值增加 <span style="margin: 0px; padding: 0px; color: rgb(0, 0, 0); font-family: DY5;">1</span>倍。</span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal;"><span style="margin: 0px; padding: 0px; font-size: 16px;"><br/></span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal; text-align: center;"><img class="rich_pages" src="https://mmbiz.qpic.cn/mmbiz_png/TCIDp9rFWaY2OuRV7ZSojzibOibBFa2zdl9hQtGib5fSPzKsRdpKsM1JGQ3n3hmicptDAk8cWyVPdtRBrkY3w6GKMQ/640?wx_fmt=png"/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal; text-align: center;"><img class="rich_pages" src="https://mmbiz.qpic.cn/mmbiz_png/TCIDp9rFWaY2OuRV7ZSojzibOibBFa2zdlFo81Qu9ZDhy4GjBufnGs6EwtcbX9P7nFw2Qiao6k3NDpo7TOcNo766w/640?wx_fmt=png"/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal; text-align: center;"><img class="rich_pages" src="https://mmbiz.qpic.cn/mmbiz_png/TCIDp9rFWaY2OuRV7ZSojzibOibBFa2zdl2nhqMqQDwq5D5PpqDn5ZAFbbPOeK6c973h1VCKtwuLTgg2Bsa9libaw/640?wx_fmt=png"/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal; text-align: center;"><br/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal;"><span style="margin: 0px; padding: 0px; font-size: 16px;"><span style="margin: 0px; padding: 0px;">（</span><span style="margin: 0px; padding: 0px; font-family: DY8; color: rgb(0, 0, 0);">3</span><span style="margin: 0px; padding: 0px;">）形状简单、壁厚均匀的厚壁铸件（如砧座等），可比图中规定的冷却时间提前 </span><span style="margin: 0px; padding: 0px; color: rgb(0, 0, 0);"><span style="margin: 0px; padding: 0px; font-family: DY8;">20-30%</span></span><span style="margin: 0px; padding: 0px;">松箱（或撬松）。此类铸件也可不入炉热处理，在浇注坑内自然冷却，并按每24h保温 </span><span style="margin: 0px; padding: 0px; font-family: DY8; color: rgb(0, 0, 0);">1.5-2t</span><span style="margin: 0px; padding: 0px;">计算保温时间。 </span></span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal;"><span style="margin: 0px; padding: 0px; font-size: 16px;"><span style="margin: 0px; padding: 0px;"><br/></span></span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal;"><span style="margin: 0px; padding: 0px; font-size: 16px;"><span style="margin: 0px; padding: 0px;">（</span><span style="margin: 0px; padding: 0px; font-family: DY8; color: rgb(0, 0, 0);">4</span><span style="margin: 0px; padding: 0px;">）结构复杂、壁厚差较大、易产生裂纹的铸件，冷却时间应比图中规定值延长约30%。</span></span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal;"><span style="margin: 0px; padding: 0px; font-size: 16px;"><span style="margin: 0px; padding: 0px;"><br/></span></span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal;"><span style="margin: 0px; padding: 0px; font-size: 16px;"><span style="margin: 0px; padding: 0px;">（</span><span style="margin: 0px; padding: 0px; font-family: DY8; color: rgb(0, 0, 0);">5</span><span style="margin: 0px; padding: 0px;">）某些地坑造型的铸件，需提前吊走盖箱或撬松砂型，这会增加冷却速度，因此冷却时间可缩短10%。</span></span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal;"><span style="margin: 0px; padding: 0px;"><br/></span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal;"><span style="margin: 0px; padding: 0px; font-size: 16px;"><strong style="margin: 0px; padding: 0px;"><span style="margin: 0px; padding: 0px;">三、非铁合金铸件的出型温度</span></strong></span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal;"><span style="margin: 0px; padding: 0px; font-size: 16px;"><strong style="margin: 0px; padding: 0px;"><span style="margin: 0px; padding: 0px;"><br/></span></strong></span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal;"><span style="margin: 0px; padding: 0px;">非铁合金铸件的出型温度可按表11-2-4 查取。</span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; clear: both; color: rgb(51, 51, 51); font-family: mp-quote, -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; white-space: normal; text-align: center;"><img class="rich_pages" src="https://mmbiz.qpic.cn/mmbiz_png/TCIDp9rFWaY2OuRV7ZSojzibOibBFa2zdlxDmFkR9IndF0oZU1SaOH5zg8J4m8wVL8pwXRorQWNjfibfvI7U1qqqQ/640?wx_fmt=png"/></p><p><br/></p>
