铸件热处理后容易变形，怎么办？
发布时间：2019-11-22 14:37
<p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: justify; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="box-sizing: border-box !important; font-family: Arial, 微软雅黑 !important; font-weight: 700; margin: 0px; padding: 0px; max-width: 100%; overflow-wrap: break-word !important;"><span style="box-sizing: border-box !important; font-family: Optima-Regular, PingFangTC-light; margin: 0px; padding: 0px; max-width: 100%; font-size: 15px; letter-spacing: 0.544px; text-indent: 32px; widows: 1; color: rgb(198, 7, 13); overflow-wrap: break-word !important;">一、温度的测量与控制</span></span></p><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: justify; box-sizing: border-box !important; overflow-wrap: break-word !important;"><br/></p><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: justify; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="box-sizing: border-box !important; font-family: Optima-Regular, PingFangTC-light; margin: 0px; padding: 0px; max-width: 100%; color: rgb(86, 86, 86); font-size: 15px; letter-spacing: 0.544px; text-indent: 32px; widows: 1; overflow-wrap: break-word !important;">工业上实际应用的热处理工艺形式非常多，但是它们的基本过程都是热作用过程，都是由加热、保温和冷却三个阶段组成的。整个工艺过程都可以用加热速度、加热温度、保温时间、冷却速度以及热处理周期等几个参数来描述。在热处理工艺中，要用到各种加热炉，金属热处理便在这些加热炉中进行（如基本热处理中的退火、淬火、回火、化学热处理的渗碳、渗氨、渗铝、渗铬或去氢、去氧等等）。因此，加热炉内的温度测量就成为热处理的重要工艺参数测量。每一种热处理工艺规范中，温度是很重要的内容。如果温度测量不准确，热处理工艺规范就得不到正确的执行，以至造成产品质量下降甚至报废。温度的测量与控制是热处理工艺的关键，也是影响变形的关键因素。</span></p><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: justify; box-sizing: border-box !important; overflow-wrap: break-word !important;"><br/></p><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: justify; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="box-sizing: border-box !important; font-family: Arial, 微软雅黑 !important; font-weight: 700; margin: 0px; padding: 0px; max-width: 100%; overflow-wrap: break-word !important;"><span style="box-sizing: border-box !important; font-family: Optima-Regular, PingFangTC-light; margin: 0px; padding: 0px; max-width: 100%; font-size: 15px; letter-spacing: 0.544px; text-indent: 32px; widows: 1; color: rgb(198, 7, 13); overflow-wrap: break-word !important;">二、控温正火或等温退火</span></span></p><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: justify; box-sizing: border-box !important; overflow-wrap: break-word !important;"><br/></p><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: justify; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="box-sizing: border-box !important; font-family: Optima-Regular, PingFangTC-light; margin: 0px; padding: 0px; max-width: 100%; color: rgb(86, 86, 86); font-size: 15px; letter-spacing: 0.544px; text-indent: 32px; widows: 1; overflow-wrap: break-word !important;">正火硬度过高、混晶、大量索氏体或魏氏组织都会使内孔变形增大，所以要用控温正火或等温退火来处理锻件。金属的正火、退火以及在进行淬火之前的调质，都会对金属最终的变形量产生一定的影响，直接影响到的是金属组织结构上的变化。实践证明，在正火时采用等温淬火可有效地使金属组织结构趋于均匀，从而使其变形量减小。</span></p><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: justify; box-sizing: border-box !important; overflow-wrap: break-word !important;"><br/></p><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: justify; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="box-sizing: border-box !important; font-family: Arial, 微软雅黑 !important; font-weight: 700; margin: 0px; padding: 0px; max-width: 100%; overflow-wrap: break-word !important;"><span style="box-sizing: border-box !important; font-family: Optima-Regular, PingFangTC-light; margin: 0px; padding: 0px; max-width: 100%; font-size: 15px; letter-spacing: 0.544px; text-indent: 32px; widows: 1; color: rgb(198, 7, 13); overflow-wrap: break-word !important;">三、合理的冷却方法</span></span></p><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: justify; box-sizing: border-box !important; overflow-wrap: break-word !important;"><br/></p><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: justify; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="box-sizing: border-box !important; font-family: Optima-Regular, PingFangTC-light; margin: 0px; padding: 0px; max-width: 100%; color: rgb(86, 86, 86); font-size: 15px; letter-spacing: 0.544px; text-indent: 32px; widows: 1; overflow-wrap: break-word !important;">金属淬火后冷却过程对变形的影响也是很重要的一个变形原因。热油淬火比冷油淬火变形小，一般控制在100±20℃。油的冷却能力对变形也是至关重要的。淬火的搅拌方式和速度均影响变形。金属热处理冷却速度越快，冷却越不均匀，产生的应力越大，模具的变形也越大。可以在保证模具硬度要求的前提下，尽量采用预冷；采用分级冷却淬火能显著减少金属淬火时产生的热应力和组织应力，是减少一些形状较复杂工件变形的有效方法；对一些特别复杂或精度要求较高的工件，利用等温淬火能显著减少变形。</span></p><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: justify; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="box-sizing: border-box !important; font-family: Optima-Regular, PingFangTC-light; margin: 0px; padding: 0px; max-width: 100%; color: rgb(86, 86, 86); font-size: 15px; letter-spacing: 0.544px; text-indent: 32px; widows: 1; overflow-wrap: break-word !important;"><br/></span></p><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); text-align: center; clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="box-sizing: border-box !important; font-family: Optima-Regular, PingFangTC-light; margin: 0px; padding: 0px; max-width: 100%; color: rgb(86, 86, 86); font-size: 15px; letter-spacing: 0.544px; text-indent: 32px; widows: 1; overflow-wrap: break-word !important;"><img src="http://www.taoluliao.com/images/1c/79/40/e206fc9a9d74bcb1d76808d076bf298b1a8c9a35.jpg"/></span></p><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: justify; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="box-sizing: border-box !important; font-family: Optima-Regular, PingFangTC-light; margin: 0px; padding: 0px; max-width: 100%; color: rgb(86, 86, 86); font-size: 15px; letter-spacing: 0.544px; text-indent: 32px; widows: 1; overflow-wrap: break-word !important;"><br/></span></p><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: justify; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="box-sizing: border-box !important; font-family: Arial, 微软雅黑 !important; font-weight: 700; margin: 0px; padding: 0px; max-width: 100%; overflow-wrap: break-word !important;"><span style="box-sizing: border-box !important; font-family: Optima-Regular, PingFangTC-light; margin: 0px; padding: 0px; max-width: 100%; font-size: 15px; letter-spacing: 0.544px; text-indent: 32px; widows: 1; color: rgb(198, 7, 13); overflow-wrap: break-word !important;">四、合理的零件结构</span></span></p><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: justify; box-sizing: border-box !important; overflow-wrap: break-word !important;"><br/></p><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: justify; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="box-sizing: border-box !important; font-family: Optima-Regular, PingFangTC-light; margin: 0px; padding: 0px; max-width: 100%; color: rgb(86, 86, 86); font-size: 15px; letter-spacing: 0.544px; text-indent: 32px; widows: 1; overflow-wrap: break-word !important;">金属热处理后在冷却过程中，总是薄的部分冷得快，厚的部分冷得慢。在满足实际生产需要的情况下，应尽量减少工件厚薄悬殊，零件截面力求均匀，以减少过渡区因应力集中产生畸变和开裂倾向；工件应尽量保持结构与材料成分和组织的对称性，以减少由于冷却不均引起的畸变；工件应尽量避免尖锐棱角、沟槽等，在工件的厚薄交界处、台阶处要有圆角过渡；尽量减少工件上的孔、槽筋结构不对称；厚度不均匀零件采用预留加工量的方法。</span></p><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: justify; box-sizing: border-box !important; overflow-wrap: break-word !important;"><br/></p><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: justify; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="box-sizing: border-box !important; font-family: Arial, 微软雅黑 !important; font-weight: 700; margin: 0px; padding: 0px; max-width: 100%; overflow-wrap: break-word !important;"><span style="box-sizing: border-box !important; font-family: Optima-Regular, PingFangTC-light; margin: 0px; padding: 0px; max-width: 100%; font-size: 15px; letter-spacing: 0.544px; text-indent: 32px; widows: 1; color: rgb(198, 7, 13); overflow-wrap: break-word !important;">五、合理的装夹方式及夹具</span></span></p><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: justify; box-sizing: border-box !important; overflow-wrap: break-word !important;"><br/></p><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: justify; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="box-sizing: border-box !important; font-family: Optima-Regular, PingFangTC-light; margin: 0px; padding: 0px; max-width: 100%; color: rgb(86, 86, 86); font-size: 15px; letter-spacing: 0.544px; text-indent: 32px; widows: 1; overflow-wrap: break-word !important;">目的使工件加热冷却均匀，以减少热应力不均，组织应力不均，来减小变形，可改变装夹方式，盘类零件与油面垂直，轴类零件立装，使用补偿垫圈，支承垫圈，叠加垫圈等，花键孔零件可用渗碳心轴等。</span></p><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: justify; box-sizing: border-box !important; overflow-wrap: break-word !important;"><br/></p><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: justify; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="box-sizing: border-box !important; font-family: Arial, 微软雅黑 !important; font-weight: 700; margin: 0px; padding: 0px; max-width: 100%; overflow-wrap: break-word !important;"><span style="box-sizing: border-box !important; font-family: Optima-Regular, PingFangTC-light; margin: 0px; padding: 0px; max-width: 100%; font-size: 15px; letter-spacing: 0.544px; text-indent: 32px; widows: 1; color: rgb(198, 7, 13); overflow-wrap: break-word !important;">六、机械加工</span></span></p><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: justify; box-sizing: border-box !important; overflow-wrap: break-word !important;"><br/></p><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: justify; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="box-sizing: border-box !important; font-family: Optima-Regular, PingFangTC-light; margin: 0px; padding: 0px; max-width: 100%; color: rgb(86, 86, 86); font-size: 15px; letter-spacing: 0.544px; text-indent: 32px; widows: 1; overflow-wrap: break-word !important;">当热处理是工件加工过程的最后工序时，热处理畸变的允许值应满足图样上规定的工件尺寸，而畸变量要根据上道工序加工尺寸确定。为此，应按照工件的畸变规律，热处理前进行尺寸的预修正，使热处理畸变正好处于合格范围内。当热处理是中间工序时，热处理前的加工余量应视为机加工余量和热处理畸变量之和。通常机械加工余量易于确定，而热处理由于影响因素多比较复杂，因此为机械加工留出足够的加工余量，其余均可作为热处理允许畸变量。热处理后再加工，根据工件的变形规律，施用反变形、收缩端预胀孔，提高淬火后变形合格率。</span></p><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: justify; box-sizing: border-box !important; overflow-wrap: break-word !important;"><br/></p><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: justify; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="box-sizing: border-box !important; font-family: Arial, 微软雅黑 !important; font-weight: 700; margin: 0px; padding: 0px; max-width: 100%; overflow-wrap: break-word !important;"><span style="box-sizing: border-box !important; font-family: Optima-Regular, PingFangTC-light; margin: 0px; padding: 0px; max-width: 100%; font-size: 15px; letter-spacing: 0.544px; text-indent: 32px; widows: 1; color: rgb(198, 7, 13); overflow-wrap: break-word !important;">七、采用合适的介质</span></span></p><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: justify; box-sizing: border-box !important; overflow-wrap: break-word !important;"><br/></p><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: justify; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="box-sizing: border-box !important; font-family: Optima-Regular, PingFangTC-light; margin: 0px; padding: 0px; max-width: 100%; color: rgb(86, 86, 86); font-size: 15px; letter-spacing: 0.544px; text-indent: 32px; widows: 1; overflow-wrap: break-word !important;">在保证同样硬度要求的前提下，尽量采用油性介质，实验和实践证明，再其他条件无差异的前提下，油性介质的冷却速度较慢，而水性介质的冷却速度则相对快一些。而且，和油性介质相比，水温变化对水性介质冷却特性的影响较大，在同样的热处理条件下，油性介质相对水性介质淬火后的变形量要相对小。</span></p><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: justify; box-sizing: border-box !important; overflow-wrap: break-word !important;"><br/></p><blockquote style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin: 1em 0px; quotes: none; background-color: rgb(238, 238, 238); padding: 4px 0px 0px 10px; border-left: 3px solid rgb(219, 219, 219); border-radius: 3px; font-size: 15px; white-space: normal; color: rgb(154, 154, 154); line-height: 1.6; max-width: 100%; text-align: justify; letter-spacing: 0.544px; box-sizing: border-box !important; overflow-wrap: break-word !important;"><p style="box-sizing: border-box !important; font-family: Arial, 微软雅黑 !important; margin: 0em 0.5em; padding: 0px; clear: both; max-width: 100%; min-height: 1em; line-height: 1.75em; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; max-width: 100%; color: rgb(136, 136, 136); font-size: 14px; box-sizing: border-box !important; overflow-wrap: break-word !important;">免责声明：此文章仅供读者作为参考，出于传递给读者更多信息之目的， <span style="margin: 0px; padding: 0px; max-width: 100%; letter-spacing: 0.544px; box-sizing: border-box !important; overflow-wrap: break-word !important;">文章角度不代表“淘炉料”平台立场</span>。如转载稿件涉及版权等问题，请在两周内来电或来函与淘炉料联系，经核实后小编会即时做出删除处理，不承担任何法律责任。</span></p></blockquote><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: center; box-sizing: border-box !important; overflow-wrap: break-word !important;"><br/></p><p style="font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; margin-top: 0px; margin-bottom: 0px; padding: 0px; white-space: normal; background-color: rgb(255, 255, 255); clear: both; max-width: 100%; min-height: 1em; color: rgb(51, 51, 51); font-size: 17px; text-align: justify; widows: 1; box-sizing: border-box !important; overflow-wrap: break-word !important;"><span style="box-sizing: border-box !important; font-family: Optima-Regular, PingFangTC-light; margin: 0px; padding: 0px; max-width: 100%; color: rgb(86, 86, 86); font-size: 14px; letter-spacing: 0.544px; overflow-wrap: break-word !important;">主营产品：生铁（球铁、铸铁）、废钢（铸造压块、边角料）、铁合金（硅铁、锰铁、铬铁、硫铁）、增碳剂（石墨化增碳剂、石油焦增碳剂、石墨棒增碳剂、碳化硅）、孕育剂（硅铁粒、硅钡粒）、球化剂（稀土镁硅球化剂）、除渣剂（行通除渣剂、卡卡除渣剂）、钠基膨润土、煤粉、包芯线。</span></p><p><br/></p>
