{"id":2785,"date":"2012-10-16T06:42:03","date_gmt":"2012-10-16T14:42:03","guid":{"rendered":"http:\/\/www.arc-zone.com\/blog\/carmenelectrode\/?p=2785"},"modified":"2012-10-19T10:39:35","modified_gmt":"2012-10-19T18:39:35","slug":"what-mms-have-to-do-with-high-purity-welding","status":"publish","type":"post","link":"https:\/\/blog.arc-zone.com\/carmenelectrode\/2012\/10\/16\/what-mms-have-to-do-with-high-purity-welding\/","title":{"rendered":"What M&Ms have to do with high purity welding"},"content":{"rendered":"

\"\"When I first joined the world of welding, I had no idea how many places you find welders.\u00a0 The place that most surprised me, however, was food processing.\u00a0 Of course it seems obvious now, all those stainless steel tanks to mix food, not to mention the metal pipes and tubing or metal chutes that the food passes through have to be welded.\u00a0 And now I know that they have to be welded utilizing a high-purity welding process, one in which the quality of the weld must be superior.\u00a0 The reason is simple: \u00a0the welds can\u2019t have any flaws, small occlusions, or even the tiniest of nooks where bacteria can flourish.<\/p>\n

High Purity Welding in Food Processing<\/h2>\n

Stainless steel is a popular metal in food processing plants because it is easy to clean (as long as the welds are nice and smooth) and is resistant to corrosion. \u00a0 Take notice of all the metal parts, parts that have been welded at one time or another:<\/p>\n

<\/object><\/p>\n

At Arc-Zone we like our M&Ms and if\u00a0you’ve\u00a0shopped with us you know you get a pack with every order (if you want to know why, check out the post over on JoeWelder.com<\/a>), so I\u00a0couldn’t\u00a0resist finding a video about how M&Ms are made.<\/p>\n

I\u00a0didn’t\u00a0notice a lot of stainless steel piping in the manufacture of M&Ms but in other food processing where liquid is transported around the plant (think dairy and brewery) stainless steel piping is integral to the operation.\u00a0 If you watch this video about Arc-Zone\u2019s favorite brewer (it’s long!), and neighbor, you\u2019ll see some amazing double hulled stainless steel fermenting tanks, and tons of shiny stainless steel pipes. (and learn about a great local beer)<\/p>\n

<\/object><\/p>\n

For piping and tubing, you\u2019ll want to use some kind of purge plug, baffle, inflatable bag, water soluble film, or water soluble paper to damn the area that you want to fill with purge gas<\/a>.\u00a0 Note: I\u2019ve heard of folks using crumpled up paper, even bread to create a damn\u2026 and I can\u2019t emphasize this enough:\u00a0 that is NOT the recommended way to a top quality weld.<\/p>\n

You\u2019ll also want to be sure to monitor the oxygen levels using an oxygen sensor so you\u2019ll know the weld zone is completely purged.<\/p>\n

Make sure none of your lines, or valves for delivering your purge gas are leaking\u2014or pulling oxygen IN to your weld zone.<\/p>\n

You must maintain a clean weld zone to avoid contamination from particulates.<\/p>\n

Additional Purge Welding Resources:<\/h2>\n

An overview of High Purity Welding Accessories at JoeWelder.com<\/a><\/p>\n

Purge gas equipment for most every high purity welding application you can imagine at Arc-Zone.com<\/a>\u00a0<\/a><\/p>\n

\u201cDam the purge gas and full speed ahead: a look at water soluble purge dam methods\u201d<\/a><\/p>\n

\u201cA shielding gas primer for GTAW: gas selection and optimization\u201d<\/a><\/p>\n

(includes a sidebar on leak detection methods)<\/p>\n

\u201cPurge welding stainless steel for cleanability and corrosion resistance\u201d<\/a><\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

When I first joined the world of welding, I had no idea how many places […]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[74,47,68],"tags":[],"class_list":["post-2785","post","type-post","status-publish","format-standard","hentry","category-tig-gtaw-welding","category-welding-education","category-welding-tips","entry","fw-tab-6 fw-tabr-4"],"aioseo_notices":[],"yoast_head":"\nWhat M&Ms Have To Do With High Purity Welding<\/title>\n<meta name=\"description\" content=\"Has to be welded utilizing a high purity welding process, one in which the quality of the weld must be superior. 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