高效过滤器滤器发现漏后，进行修补的方法？

ruanshu1

请教各位，是否有相关资料或经验？谢谢

大呆子

@元芳
你怎么看？

mbl2006

泄露点打胶补漏，修补的总面积不应超过过滤器端面净面积的1%

mosmall

膜面漏的话，新的你当然不要了直接退货。使用了一段时间才漏的话，打胶补上，面积真不能太大，会影响风量的。补完再对高效进行检漏。

打胶是万能的{:soso_e113:}

是是而非

我们也是泄露点打胶

开心陪你

这个找生产厂家啊

ruanshu1

mbl2006 发表于 2012-11-18 13:44
泄露点打胶补漏，修补的总面积不应超过过滤器端面净面积的1%

所用的胶有没有要求，并且修补面积不超过滤器净面积的1%如何比较？应为自己没有实际操作过，所以想请教一下在这方面有过实际操作经验的请教下

石头968

如何对高效过滤器进行补漏？对于这个问题，只有做为高效过滤器的生产厂家才有资格出来说，因为高效过滤器补漏是空气过滤器生产厂家工人的常见作法，现以多年的实践找出了高效空气过滤器最有效的补漏方法，现在跟大家一起分享。以现在制造水平，高效过滤器效率检验的一次合格率达到97%已经是高水平了，那3%的不合格品，经认真修补后多数能成为合格品。所以，在过滤器制造厂，修补高效过滤器是生产工人的一项重要工作。
国家标准GB13554-92《高效空气过滤器》曾规定，每个过滤器修补面积不应超过13cm2，修补的总面积不应超过过滤器端面净面积的1%。现在的生产要求比那个标准严格多了，修补原则是，过滤器上不能有明显的修补痕迹。
高效空气过滤器最有效的补漏方法：首先要挑出有漏点的高效过滤器，还要确定漏点的位置。检漏可以采用激光粒子计数器扫描，或光度计扫描，也可以通过发烟目测。找到了漏点位置，要判断是否可以修补，若修补会造成明显外观缺陷，或修补工作过于费事而不值得修补，那个高效空气过滤器就该报废。
在漏点处补胶。修补用的胶不能与滤纸、密封胶发生化学反应，对外框没有腐蚀性，否则原漏点没补好又添新漏点。胶的颜色要与滤纸接近，否则会很难看。漏点在明处比较好办，用胶将漏点堵住即可。如果漏点在过滤器内部，就需要将过滤器倾斜放置，用流动性好、固化时间短的胶从一面灌入。此时要切记，不要为了节省而少注胶，要多灌，否则，一次没补好，再想补第二次就难了，因为第一次的胶可能堵住通道，第二次的胶很难流进去。
一般情况下，如果使用可靠的原材料，采用成熟的生产工艺，过滤器效率不合格就是有漏点。根据经验，高效空气过滤器最有效的补漏方法多数漏点发生在过滤器边沿滤材与边框的结合处。
由于我们用的材料和工艺并非那么好，根据我们的经验，效率不合格并非全是因为有漏点，下列几种情况就不能算作过滤器漏。纸隔板发尘，这种情况在纸隔板过滤器中很普遍，而纸隔板发尘只有在过滤器受振动时才出现，用普通检测手段不易发现；滤纸发尘，这种毛病很少见，但确实发生过；滤纸本身效率低；测试设备或方法有问题。

ruanshu1

非常感谢！

beiwei5du

What is your recommended factory and field-patching procedure?

Camfil Farr follows the recommended practice of IEST RP-CC001.5 Section 8.3.2 and IEST RP-CC034.4 Section 6.2.2 e) 2) or EN 1822-4 for filters requiring patching at the factory. This is dependent upon customer requirements and Standard practices in effect at the filter manufacturing location.
IEST RP-CC001.5 Section 8.3.2 states:  “Unless otherwise specified, the medium of filter units to be used in cleanroom or clean air device applications may be patched with medium or adhesive, not to exceed an area of 13 cm2 (2 in2) in any one patch, or a total of 1% of the area being patched.”
EN 1822-4, Section 8.5.4 states: “A filter may be repaired if necessary and shall then be retested” and further notes: “All repairs together (including those made by the filter manufacturer) shall not block or restrict more than 0.5% of the filter face area (not including the frame) and the maximum length of each single repair shall not exceed 3.0 cm. Alternative repair criteria may be otherwise agreed between buyer and seller.”
Camfil Farr recommends adherence to IEST RP-CC034.4 for field repairs.
IEST RP-CC034.4 in various sections states: “Field repair should not block or restrict more than an additional 3.0% of the filter face area, and no single repair should have a lesser dimension exceeding 3.8 cm (1.5 in.).
ISO 14644-3, Section B. 6.6 allows for repairs and repair procedures “by agreement between the customer and supplier.”
FDA - Guidance for Industry, Sterile Drug Products Produced by Aseptic Processing – Current Good Manufacturing Practice, Section 4.D.2 allows HEPA filters to be repaired in (undefined) limited areas when appropriate.
For field repairs, Camfil Farr recommends the use of a tool similar to EFD’s DispensGun (Syringe type).
We recommend using a good quality viscous Silicone caulking like RTV 162, RTV 108, Dow 732, Hot-Melt (same as the pleat separator) or other suitable alternative.
Always test the filter after performing repairs both in the factory and in the field.

What is the recommended filter
patching material?  
A mixture of RTV160 and RTV162 cleanroom grade silicone caulk is used at the factory for media repairs. Dow Corning 732 silicone caulk is used for field repairs. Camfil Farr has field repair kits available upon request. Some of our plants will also use the hot-melt separator solution as the repair material. Camfil Farr does not use filter media for patches.

选自：https://www.camfil.com/FileArchive/Industries/Life%20Science/FAQ%20HEPAs%20and%20ULPAs%20Technical%20Bulletin.pdf

WGYYZLB

验证指南中有，有的地方漏可以打胶，有的地方漏只能更换或调整