真空炉抽真空能力探讨

hackyue

问一下各位，现在我们公司的炉子：程序启动后，抽真空30分钟到达2pa，然后开始加热。

请问，在30分钟抽真空后，真空度一般能够抽到多大？（客户提出来说我们的真空泵组功率太小，抽的不够）

iamspiderman

你的真空度很正常，真空度和炉子的气密性非常关联，正常你要是配两级泵的话，也就这个水平，除非你加扩散泵，但前提也是炉子要足够密封，没有漏气！

aaron01

炉子有没有扩散泵的啊？

Adam

2Pa一般机械泵就能够达到
罗茨泵估计能抽到10负3次方Pa

hongqk

如果设备比较大，30分钟抽到2Pa属正常。

hongqk

如果设备比较大，30分钟抽到2Pa属正常。

hackyue

iamspiderman 发表于 2013-10-23 13:14
你的真空度很正常，真空度和炉子的气密性非常关联，正常你要是配两级泵的话，也就这个水平，除非你加扩散泵 ...

有扩散泵的

hackyue

aaron01 发表于 2013-10-23 13:25
炉子有没有扩散泵的啊？

有扩散泵的

hackyue

Adam 发表于 2013-10-23 14:12
2Pa一般机械泵就能够达到
罗茨泵估计能抽到10负3次方Pa

有扩散泵的。不知道效果怎么样

iamspiderman

有扩散泵，那么这个真空度就有点不好了，而且扩散泵也应该是抽到几pa之后开启才会比较好，不然影响寿命和能力！

喜欢上岸的鱼

你的这台炉子有漏气点和放气点。

zhenlinchuan

不错，赞一个 。



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hongqk

Adam 发表于 2013-10-23 14:12
2Pa一般机械泵就能够达到
罗茨泵估计能抽到10负3次方Pa

要纠正一下，罗茨泵的极限真空度是负二次方帕，达不到负三，还是不带负载，泵口测试。