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搞模具先弄懂材料,41张材料典型缺陷PPT

  • 2026-03-30 16:24:06
搞模具先弄懂材料,41张材料典型缺陷PPT

  点击↑模具达人教你成模具达人

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作者：严超峰

来源：汽车新材料技术与管理的创新

继续咱们的金属材料的金相分析，机械零件之所以有使用寿命，是因为金属也有失效、老化、疲劳的时候，失效了怎么办，也是一堆检查，今天咱们先看典型的材料缺陷。看完这些大家就知道看金相的重要性了。（注：前19张前几天分享过了）

来源：汽车新材料技术与管理的创新，作者：严超峰

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  1. CONNECT:[ UseTime:0.000602s ] mysql:host=127.0.0.1;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000812s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000306s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000293s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000463s ]
  6. SELECT * FROM `set` [ RunTime:0.000208s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000529s ]
  8. SELECT * FROM `article` WHERE `id` = 475215 LIMIT 1 [ RunTime:0.000413s ]
  9. UPDATE `article` SET `lasttime` = 1775885206 WHERE `id` = 475215 [ RunTime:0.001377s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000242s ]
  11. SELECT * FROM `article` WHERE `id` < 475215 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000394s ]
  12. SELECT * FROM `article` WHERE `id` > 475215 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000352s ]
  13. SELECT * FROM `article` WHERE `id` < 475215 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000617s ]
  14. SELECT * FROM `article` WHERE `id` < 475215 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.003488s ]
  15. SELECT * FROM `article` WHERE `id` < 475215 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.003569s ]
0.083264s