热处理原理及工艺-畅读网

　　　　

热处理原理及工艺

作者：张英哲,秦庆东,龙绍檑,龙潇

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科学技术 >> 工业技术

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内容简介:

本书主要介绍了金属材料热处理的基本原理和工艺，内容包括：奥氏体转变、珠光体转变、马氏体转变、贝氏体转变、回火转变、等温转变曲线、连续冷却转变曲线、退火及正火、淬火及回火、表面淬火、化学热处理、形变热处理、真空热处理等，此外还对热处理工艺设计进行了简要介绍。本书可作为金属材料工程专业本科生的教材，也可供从事金属材料热处理相关技术人员参考。

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SELECT `id`,`name` FROM `ls_goods_category` WHERE `id` = 5 LIMIT 1 [ RunTime:0.006879s ]
SELECT `id`,`name` FROM `ls_goods_category` WHERE `id` = 45 LIMIT 1 [ RunTime:0.005088s ]
SELECT `a`.*,`ap`.`width`,`ap`.`height` FROM `ls_ad` `a` INNER JOIN `ls_ad_position` `ap` ON `a`.`pid`=`ap`.`id` WHERE `pid` = 11 AND `ap`.`client` = '2' AND `a`.`status` = '1' AND `a`.`del` = '0' AND `ap`.`status` = '1' AND `ap`.`del` = '0' ORDER BY `sort` DESC,`id` DESC [ RunTime:0.003752s ]
SELECT `a`.*,`ap`.`width`,`ap`.`height` FROM `ls_ad` `a` INNER JOIN `ls_ad_position` `ap` ON `a`.`pid`=`ap`.`id` WHERE `pid` = 14 AND `ap`.`client` = '2' AND `a`.`status` = '1' AND `a`.`del` = '0' AND `ap`.`status` = '1' AND `ap`.`del` = '0' ORDER BY `sort` DESC,`id` DESC [ RunTime:0.005512s ]
SELECT * FROM `ls_goods` WHERE `del` = 0 AND `status` = 1 AND `create_time` <= 1758504305 ORDER BY `create_time` DESC LIMIT 5 [ RunTime:1.260881s ]

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