\u6c17\u306e\u305b\u3044\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u30ed\u30dc\u30c3\u30c8\u306b\u3088\u308b\u30a2\u30eb\u30df\u30cb\u30a6\u30e0\u6eb6\u63a5\u306f\u3001\u624b\u52d5\u6eb6\u63a5\u3088\u308a\u3082\u300c\u9ed2\u3044\u7164\u300d\u304c\u767a\u751f\u3057\u3084\u3059\u3044\u306e\u3067\u3059\u3002.<\/p>\n\n\n\n
\u3057\u304b\u3057\u3001\u306a\u305c\u3067\u3057\u3087\u3046\u304b\uff1f\u30ed\u30dc\u30c3\u30c8\u306b\u300c\u30b9\u30ad\u30eb\u300d\u304c\u6b20\u3051\u3066\u3044\u308b\u306e\u3067\u3057\u3087\u3046\u304b\uff1f\u3044\u3044\u3048\u3002\u7b54\u3048\u306f\u3001\u7269\u7406\u5b66\u3001\u30ac\u30b9\u306e\u5206\u5e03\u3001\u305d\u3057\u3066\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u7fd2\u6163\u306b\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n
In this guide, we will break down exactly why aluminum turns black during TIG aluminum welding and how to fix your robotic cell to get mirror-finish results. <\/p>\n\n\n\n
\u30a2\u30eb\u30df\u30cb\u30a6\u30e0\u6eb6\u63a5\u5de5\u7a0b\u3067\u898b\u3089\u308c\u308b\u3042\u306e\u300c\u9ed2\u3044\u7269\u8cea\u300d\u3063\u3066\u4e00\u4f53\u4f55\u3067\u3059\u304b\uff1f\uff08\u70ad\u7d20\u3067\u306f\u3042\u308a\u307e\u305b\u3093\uff09<\/h2>\n\n\n\n
\u307e\u305a\u3001TIG\u30a2\u30eb\u30df\u30cb\u30a6\u30e0\u6eb6\u63a5\u306b\u95a2\u3059\u308b\u5927\u304d\u306a\u8aa4\u89e3\u3092\u89e3\u3044\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002.<\/p>\n\n\n\n
\u305d\u306e\u9ed2\u3044\u6b8b\u7559\u7269\u306f\u3001\u30a2\u30eb\u30df\u30cb\u30a6\u30e0\u3084\u70ad\u7d20\u304c\u300c\u71c3\u713c\u300d\u3057\u305f\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002.<\/p>\n\n\n\n
\u305d\u308c\u306f\u5b9f\u969b\u306b\u306f\u91d1\u5c5e\u84b8\u6c17\u3067\u3059\u3002.<\/p>\n\n\n\n
- \n
- The science: <\/strong>Aluminum and Magnesium boil at temperatures much lower than the electric arc.<\/li>\n\n\n\n
- The process: <\/strong>The arc vaporizes the metal. This vapor rises up.<\/li>\n\n\n\n
- The failure: <\/strong>If the vapor touches oxygen, it turns into Aluminum Oxide (Al\u00b2O\u00b3) and Magnesium Oxide (MgO) .<\/li>\n\n\n\n
- The color: <\/strong>These microscopic oxides scatter light differently, making them appear gray or black to the human eye.<\/li>\n<\/ul>\n\n\n\n
\u7d50\u8ad6:<\/strong> Black soot = Unprotected metal vapor.<\/p>\n\n\n\n
\u6839\u672c\u7684\u306a\u9055\u3044\uff1a\u624b\u52d5\u64cd\u4f5c vs. \u30ed\u30dc\u30c3\u30c8\u64cd\u4f5c<\/strong><\/strong><\/h2>\n\n\n\n
TIG\u30a2\u30eb\u30df\u30cb\u30a6\u30e0\u6eb6\u63a5\u88fd\u9020\u306b\u304a\u3044\u3066\u3001, \u306a\u305c\u4eba\u9593\u306f\u304d\u308c\u3044\u306b\u6eb6\u63a5\u3067\u304d\u308b\u306e\u306b\u3001\u30ed\u30dc\u30c3\u30c8\u306f\u7164\u3092\u51fa\u3059\u306e\u304b\uff1f\u305d\u308c\u306f\u3001\u30c8\u30fc\u30c1\u306e\u89d2\u5ea6\u3001\u7a81\u304d\u51fa\u3057\u91cf\u3001\u305d\u3057\u3066\u9069\u5fdc\u6027\u3068\u3044\u30463\u3064\u306e\u8981\u7d20\u306b\u8d77\u56e0\u3057\u307e\u3059\u3002.<\/strong><\/p>\n\n\n\n
1. \u300c\u62bc\u3057\u51fa\u3057\u300d\u5bfe\u300c\u5f15\u304d\u305a\u308a\u300d\u306e\u60e8\u4e8b\uff08\u30c8\u30fc\u30c1\u30a2\u30f3\u30b0\u30eb\uff09<\/strong><\/strong><\/h3>\n\n\n\n
- \n
- The Manual Welder (Smart): <\/strong>An experienced welder always uses a “Push Angle.” They point the torch forward (10-15 degrees). This creates an aerodynamic cushion that pushes air away from the weld pool.<\/li>\n\n\n\n
- The Robot (Literal): <\/strong>Many robotic programs are taught by engineers who don’t weld. They often use a “Drag Angle” (pulling the torch) or a perpendicular angle. This creates a Venturi effect that sucks surrounding air into the gas shield. Air + Vapor = Black soot.<\/li>\n<\/ul>\n\n\n\n
2. \u300c\u30b3\u30f3\u30bf\u30af\u30c8\u30c1\u30c3\u30d7\u4f5c\u52d5\u8ddd\u96e2\u300d\uff08CTWD\uff09<\/h3>\n\n\n\n
- \n
- The Manual Welder: <\/strong>A human keeps the nozzle incredibly close to the metal\u2014usually about \u00bd inch (12 mm) . If the gap grows, they instinctively push it back in.<\/li>\n\n\n\n
- The Robot: <\/strong>A robot follows a rigid path. If your fixture is slightly warped or the part isn’t clamped perfectly, the torch drifts away. At \u00be inch, the gas shield becomes turbulent. At 1 inch, it is non-existent. The vapor oxidizes instantly.<\/li>\n<\/ul>\n\n\n\n
3. \u71b1\u5165\u529b\u3068\u30de\u30b0\u30cd\u30b7\u30a6\u30e0\u71c3\u713c<\/h3>\n\n\n\n
- \n
- Manual:<\/strong> A human can “haul ass” (move fast) or slow down based on the puddle. They regulate heat dynamically.<\/li>\n\n\n\n
- Robotic: <\/strong>Robots often run at constant travel speeds. If the speed is too slow for the amperage, you overheat the puddle. Overheating burns off Magnesium (especially in ER5356 wire), creating clouds of black Magnesium Oxide powder.<\/li>\n<\/ul>\n\n\n\n
\u30ed\u30dc\u30c3\u30c8\u306b\u3088\u308b\u30a2\u30eb\u30df\u30cb\u30a6\u30e0\u6eb6\u63a5\u306e\u4e0d\u5177\u5408\u3092\u4fee\u6b63\u3059\u308b\u65b9\u6cd5\uff084\u3064\u306e\u5b9f\u8df5\u7684\u306a\u30b9\u30c6\u30c3\u30d7\uff09<\/h2>\n\n\n\n
![\"\"](\"https:\/\/tigweldingaluminum.com\/wp-content\/uploads\/2026\/05\/Aluminum-Welding-Torch-Angle-1024x575.jpg\" "\\"\\"")
\u30ab\u30b9\u30bf\u30e0TIG\u6eb6\u63a5\u306b\u3088\u308b\u30a2\u30eb\u30df\u90e8\u54c1<\/figcaption><\/figure>\n\n\n\n <\/p>\n\n\n\n
\u30ed\u30dc\u30c3\u30c8\u3092\u89e3\u96c7\u3059\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u6eb6\u63a5\u6a5f\u306e\u3088\u3046\u306b\u518d\u30d7\u30ed\u30b0\u30e9\u30e0\u3059\u308b\u3060\u3051\u3067\u3044\u3044\u306e\u3067\u3059\u3002.<\/p>\n\n\n\n
\u30b9\u30c6\u30c3\u30d71\uff1a\u89d2\u5ea6\u3092\u8abf\u6574\u3059\u308b\uff08\u30d7\u30c3\u30b7\u30e5\u30e2\u30fc\u30c9\u306b\u5207\u308a\u66ff\u3048\u308b\uff09<\/strong><\/strong><\/h3>\n\n\n\n
\u30ed\u30dc\u30c3\u30c8\u306e\u30c6\u30a3\u30fc\u30c1\u30f3\u30b0\u30da\u30f3\u30c0\u30f3\u30c8\u3092\u3059\u3050\u306b\u958b\u3051\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n\n\n
- \n
- Change:<\/strong> Ensure the torch is angled 10-15 degrees “Push” (pointing into the direction of travel).<\/li>\n\n\n\n
- Avoid:<\/strong> 0 degrees (perpendicular) or “Drag” angles.<\/li>\n\n\n\n
- \u7d50\u679c\uff1a<\/strong> The gas blanket stays intact.<\/li>\n<\/ul>\n\n\n\n
\u30b9\u30c6\u30c3\u30d72\uff1a\u7a81\u304d\u51fa\u3057\u90e8\u5206\u3092\u77ed\u304f\u3059\u308b<\/h2>\n\n\n\n
- \n
- Change: <\/strong>Reprogram your paths so the Contact Tip to Work Distance (CTWD) is a maximum of 12 to 15 mm.<\/li>\n\n\n\n
- Pro Tip: <\/strong>If your fixture is warped, invest in through-arc seam tracking or tactile sensors. The robot must adapt to the part, not the other way around.<\/li>\n<\/ul>\n\n\n\n
\u30b9\u30c6\u30c3\u30d73\uff1a\u30ac\u30b9\u8a2d\u5b9a\u3092\u5909\u66f4\u3059\u308b<\/strong><\/strong><\/h2>\n\n\n\n
- \n
- Increase Flow: <\/strong>Bump your Argon flow to 25-35 CFH (cubic feet per hour).<\/li>\n\n\n\n
- Add a Gas Lens: <\/strong>Use a gas lens (sieve) in the torch. It laminates the flow, making it “soft” and resistant to drafts, unlike standard collet bodies which are turbulent.<\/li>\n<\/ul>\n\n\n\n
\u30b9\u30c6\u30c3\u30d74\uff1a\u6eb6\u52a0\u6750\u306e\u5909\u66f4\u3092\u691c\u8a0e\u3059\u308b<\/strong><\/strong><\/h3>\n\n\n\n
\u9ed2\u3044\u7164\u304c\u53d6\u308c\u305a\u3001\u90e8\u54c1\u304c\u6d77\u6c34\u306b\u6d78\u304b\u3063\u3066\u3044\u306a\u3044\u5834\u5408\uff1a<\/p>\n\n\n\n
- \n
- Switch from ER5356 (Mg based) to ER4043 (Si based).<\/li>\n\n\n\n
- Why: 4043 contains almost no Magnesium. It produces virtually no black soot, though it is slightly softer and less ductile than 5356.<\/li>\n<\/ul>\n\n\n\n
\u6eb6\u63a5\u306b\u554f\u984c\u304c\u3042\u308b\u5834\u5408\u306f\u3001\u30ab\u30b9\u30bf\u30e0TIG \u30a2\u30eb\u30df\u30cb\u30a6\u30e0\u90e8\u54c1\u306e\u6eb6\u63a5<\/a> Flow Wing Metal Now!\u3088\u308a<\/strong><\/p>\n\n\n\n
\u30a2\u30eb\u30df\u30cb\u30a6\u30e0\u6eb6\u63a5\u306b\u304a\u3044\u3066\u3001\u624b\u52d5\u6eb6\u63a5\u306f\u30ed\u30dc\u30c3\u30c8\u6eb6\u63a5\u3088\u308a\u3082\u300c\u512a\u308c\u3066\u3044\u308b\u300d\u3068\u8a00\u3048\u308b\u306e\u304b\uff1f<\/strong> \u30ab\u30b9\u30bf\u30e0TIG\u30a2\u30eb\u30df\u30cb\u30a6\u30e0\u6eb6\u63a5\u30b5\u30fc\u30d3\u30b9<\/h2>\n\n\n\n
\u3044\u3044\u3048\u3002\u30ed\u30dc\u30c3\u30c8\u306e\u65b9\u304c\u5b89\u5b9a\u6027\u304c\u9ad8\u304f\u3001\u4f5c\u696d\u3082\u901f\u3044\u3067\u3059\u3002\u554f\u984c\u306f\u3001\u307b\u3068\u3093\u3069\u306e\u30ed\u30dc\u30c3\u30c8\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u6eb6\u63a5\u5de5\u3067\u306f\u306a\u304f\u30d7\u30ed\u30b0\u30e9\u30de\u30fc\u306b\u3088\u3063\u3066\u66f8\u304b\u308c\u3066\u3044\u308b\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002.<\/p>\n\n\n\n
\u9ed2\u3044\u7164\u306f\u3001\u30ac\u30bd\u30ea\u30f3\u304c\u4ed8\u7740\u3057\u3066\u3044\u308b\u554f\u984c\u3067\u3059\u3002.<\/p>\n\n\n\n
- \n
- Manual welders instinctively fix coverage.<\/li>\n\n\n\n
- Robots need to be taught to do the same.<\/li>\n<\/ul>\n\n\n\n
\u5de5\u5834\u306b\u304a\u3051\u308b\u30a2\u30eb\u30df\u30cb\u30a6\u30e0\u6eb6\u63a5\u306e\u305f\u3081\u306e\u30af\u30a4\u30c3\u30af\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8<\/strong><\/h3>\n\n\n\n
- \n
- Is the torch pushing (not dragging)?<\/li>\n\n\n\n
- Is the nozzle within \u00bd inch of the metal?<\/li>\n\n\n\n
- Is the argon flow high enough (25+ CFH)?<\/li>\n\n\n\n
- Do you have a gas lens installed?<\/li>\n\n\n\n
- Have you tried 4043 wire as a test?<\/li>\n<\/ul>\n\n\n\n
![\"\"](\"https:\/\/tigweldingaluminum.com\/wp-content\/uploads\/2026\/05\/ER4043-Weld-1024x575.jpg\" "\\"\\"")
<\/figure>\n\n\n\nFix these four variables, and your robotic aluminum welding will look just as shiny\u2014and far more repeatable\u2014than your best manual welder.<\/p>\n\n\n\n
\u2014<\/p>\n\n\n\n
\u5c02\u9580\u5bb6\u304c\u5fc5\u8981 \u30a2\u30eb\u30df\u30cb\u30a6\u30e0TIG\u6eb6\u63a5\u30b5\u30fc\u30d3\u30b9<\/a>\u5f53\u793e\u306f\u3001\u81ea\u52d5\u5316\u3055\u308c\u305f\u88fd\u9020\u73fe\u5834\u306b\u304a\u3051\u308b\u9178\u5316\u3084\u7164\u7159\u306e\u554f\u984c\u89e3\u6c7a\u3092\u5c02\u9580\u3068\u3057\u3066\u3044\u307e\u3059\u3002. \u304a\u554f\u3044\u5408\u308f\u305b<\/a> \u304a\u898b\u7a4d\u3082\u308a\u306b\u3064\u3044\u3066\u306f\u3001\u304a\u554f\u3044\u5408\u308f\u305b\u304f\u3060\u3055\u3044\u3002. <\/p>\n\n\n\n
![\"\"](\"https:\/\/tigweldingaluminum.com\/wp-content\/uploads\/2026\/05\/Tig-Aluminum-Welding-Flow-Wing-1024x575.jpg\" "\\"\\"")
<\/figure>\n\n\n\n<\/p>","protected":false},"excerpt":{"rendered":"
If you work in a fabrication shop, you\u2019ve likely noticed a frustrating paradox: You are not imagining things. Robotic aluminum […]<\/p>\n","protected":false},"author":1,"featured_media":3983,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[3584,3578,3579,3581,3583,3586,3585,3580,3582],"class_list":["post-3988","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-aluminum-weld","tag-aluminum-weld-porosity","tag-aluminum-welding-defects","tag-aluminum-welding-quality-control","tag-aluminum-welding-turn-black","tag-aluminum-welding-with-tig","tag-aluminum-with-tig","tag-custom-aluminum-parts","tag-weld-inspection"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/tigweldingaluminum.com\/ja\/wp-json\/wp\/v2\/posts\/3988","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tigweldingaluminum.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tigweldingaluminum.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tigweldingaluminum.com\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tigweldingaluminum.com\/ja\/wp-json\/wp\/v2\/comments?post=3988"}],"version-history":[{"count":12,"href":"https:\/\/tigweldingaluminum.com\/ja\/wp-json\/wp\/v2\/posts\/3988\/revisions"}],"predecessor-version":[{"id":8772,"href":"https:\/\/tigweldingaluminum.com\/ja\/wp-json\/wp\/v2\/posts\/3988\/revisions\/8772"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tigweldingaluminum.com\/ja\/wp-json\/wp\/v2\/media\/3983"}],"wp:attachment":[{"href":"https:\/\/tigweldingaluminum.com\/ja\/wp-json\/wp\/v2\/media?parent=3988"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tigweldingaluminum.com\/ja\/wp-json\/wp\/v2\/categories?post=3988"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tigweldingaluminum.com\/ja\/wp-json\/wp\/v2\/tags?post=3988"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
- Add a Gas Lens: <\/strong>Use a gas lens (sieve) in the torch. It laminates the flow, making it “soft” and resistant to drafts, unlike standard collet bodies which are turbulent.<\/li>\n<\/ul>\n\n\n\n
- Pro Tip: <\/strong>If your fixture is warped, invest in through-arc seam tracking or tactile sensors. The robot must adapt to the part, not the other way around.<\/li>\n<\/ul>\n\n\n\n
- Avoid:<\/strong> 0 degrees (perpendicular) or “Drag” angles.<\/li>\n\n\n\n
- Robotic: <\/strong>Robots often run at constant travel speeds. If the speed is too slow for the amperage, you overheat the puddle. Overheating burns off Magnesium (especially in ER5356 wire), creating clouds of black Magnesium Oxide powder.<\/li>\n<\/ul>\n\n\n\n
- The Robot: <\/strong>A robot follows a rigid path. If your fixture is slightly warped or the part isn’t clamped perfectly, the torch drifts away. At \u00be inch, the gas shield becomes turbulent. At 1 inch, it is non-existent. The vapor oxidizes instantly.<\/li>\n<\/ul>\n\n\n\n
- The Robot (Literal): <\/strong>Many robotic programs are taught by engineers who don’t weld. They often use a “Drag Angle” (pulling the torch) or a perpendicular angle. This creates a Venturi effect that sucks surrounding air into the gas shield. Air + Vapor = Black soot.<\/li>\n<\/ul>\n\n\n\n
- The process: <\/strong>The arc vaporizes the metal. This vapor rises up.<\/li>\n\n\n\n