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class="cdx-message cdx-message--block cdx-message--warning mw-revision"><span class="cdx-message__icon"></span><div class="cdx-message__content"><div id="mw-revision-info-current"><p><b>This is the <a href="/wiki/Help:Page_history" title="Help:Page history">current revision</a> of this page, as edited by <span id="mw-revision-name"><a href="/wiki/User:Andy_Dingley" class="mw-userlink" title="User:Andy Dingley" data-mw-revid="1176535051"><bdi>Andy Dingley</bdi></a> <span class="mw-usertoollinks">(<a href="/wiki/User_talk:Andy_Dingley" class="mw-usertoollinks-talk" title="User talk:Andy Dingley">talk</a> | <a href="/wiki/Special:Contributions/Andy_Dingley" class="mw-usertoollinks-contribs" title="Special:Contributions/Andy Dingley">contribs</a>)</span></span> at <span id="mw-revision-date">10:17, 22 September 2023</span><span id="mw-revision-summary"> <span class="comment">(better shortdesc)</span></span>. The present address (URL) is a <a href="/wiki/Help:Permanent_link" title="Help:Permanent link">permanent link</a> to this version.</b></p><div id="revision-info-current-plain" style="display: none;">Revision as of 10:17, 22 September 2023 by <a href="/wiki/User:Andy_Dingley" class="mw-userlink" title="User:Andy Dingley" data-mw-revid="1176535051"><bdi>Andy Dingley</bdi></a> <span class="mw-usertoollinks">(<a href="/wiki/User_talk:Andy_Dingley" class="mw-usertoollinks-talk" title="User talk:Andy Dingley">talk</a> | <a href="/wiki/Special:Contributions/Andy_Dingley" class="mw-usertoollinks-contribs" title="Special:Contributions/Andy Dingley">contribs</a>)</span> <span class="comment">(better shortdesc)</span></div></div><div id="mw-revision-nav">(<a href="/w/index.php?title=Autogenous_welding&diff=prev&oldid=1176535051" title="Autogenous welding">diff</a>) <a href="/w/index.php?title=Autogenous_welding&direction=prev&oldid=1176535051" title="Autogenous welding">← Previous revision</a> | Latest revision (diff) | Newer revision → (diff)</div></div></div></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Form of welding where no additional filler material is added</div> <p><b>Autogenous welding</b> is a form of <a href="/wiki/Welding" title="Welding">welding</a> in which the filler material is either supplied by melting the base material or is of identical composition.<sup id="cite_ref-Copper,_29_1-0" class="reference"><a href="#cite_note-Copper,_29-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> The weld may be formed entirely by melting parts of the base metal, and no additional <a href="/wiki/Filler_rod" class="mw-redirect" title="Filler rod">filler rod</a> is used. </p><p>There is some variation in the use of this term. Those bodies concerned with teaching the craft skill of welding tend to define it as using no filler rod, i.e. the technique is based purely on the base metal. Those concerned with the welded joint's <a href="/wiki/Metallurgy" title="Metallurgy">metallurgy</a> may make no distinction between a filler rod and the base metal, provided that the final metallurgy is identical.<sup id="cite_ref-Copper,_29_1-1" class="reference"><a href="#cite_note-Copper,_29-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p><p>Most welding processes may be either autogenous or use additional filler. Some are characteristically autogenous and avoid filler. Some <a href="/wiki/Arc_welding" title="Arc welding">arc welding</a> processes, including such major process such as <a href="/wiki/Manual_metal_arc_welding" class="mw-redirect" title="Manual metal arc welding">manual metal arc</a> (stick) welding and <a href="/wiki/Gas_metal_arc_welding" title="Gas metal arc welding">MAGS</a> (wire-feed) welding, cannot be used autogenously, as they rely on the consumption of a filler rod to provide the arc. </p><p>Some processes are typically autogenous. These include some <a href="/wiki/Gas_welding" class="mw-redirect" title="Gas welding">gas welding</a> processes such as <a href="/wiki/Lead_burning" title="Lead burning">lead burning</a> (although fillers may optionally be used) and <a href="/wiki/Oxy-acetylene_welding" class="mw-redirect" title="Oxy-acetylene welding">oxy-acetylene welding</a> in some positions, such as <a href="/wiki/Seam_welding" class="mw-redirect" title="Seam welding">seam welding</a> the edges of two overlapping sheets. <a href="/wiki/Resistance_welding" class="mw-redirect" title="Resistance welding">Resistance welding</a>, both <a href="/wiki/Spot_welding" title="Spot welding">spot welding</a> and <a href="/wiki/Seam_welding" class="mw-redirect" title="Seam welding">seam welding</a>, is inherently autogenous, as there is no convenient way to apply a filler. <a href="/wiki/Friction_welding" title="Friction welding">Friction</a> and <a href="/wiki/Laser_welding" class="mw-redirect" title="Laser welding">laser welding</a> have similar restrictions. </p><p>Some alloys are prone to changing their composition when heated, particularly a loss of <a href="/wiki/Zinc" title="Zinc">zinc</a> from <a href="/wiki/Brass" title="Brass">brass</a> by its evaporation as vapour. In these cases, an excess of 2–3% extra zinc may be provided in the filler rod to compensate.<sup id="cite_ref-FOOTNOTEWelding,_Brazing_and_Soldering_of_Copper_and_its_Alloys195283–84_2-0" class="reference"><a href="#cite_note-FOOTNOTEWelding,_Brazing_and_Soldering_of_Copper_and_its_Alloys195283–84-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> Silicon may also be used as an additive to reduce this loss.<sup id="cite_ref-FOOTNOTEWelding,_Brazing_and_Soldering_of_Copper_and_its_Alloys195283–84_2-1" class="reference"><a href="#cite_note-FOOTNOTEWelding,_Brazing_and_Soldering_of_Copper_and_its_Alloys195283–84-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>A few materials, such as the <a href="/wiki/HY-80#Weldability" title="HY-80">HY-80</a> series of high-strength steels, require a non-autogenous process to control their metallurgy.<sup id="cite_ref-Roepke,_2009_3-0" class="reference"><a href="#cite_note-Roepke,_2009-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> However, advanced processes, such as <a href="/wiki/Laser-hybrid_welding" title="Laser-hybrid welding">hybrid laser arc welding</a>, have been used to achieve the same effect autogenously.<sup id="cite_ref-Roepke,_2009_3-1" class="reference"><a href="#cite_note-Roepke,_2009-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Autogenous_welding&action=edit&section=1" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-Copper,_29-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-Copper,_29_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Copper,_29_1-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFWelding,_Brazing_and_Soldering_of_Copper_and_its_Alloys1952" class="citation book cs1"><i>The Welding, Brazing and Soldering of Copper and its Alloys</i> (4th ed.). England: <a href="/w/index.php?title=Copper_Development_Association&action=edit&redlink=1" class="new" title="Copper Development Association (page does not exist)">Copper Development Association</a>. 1956 [1952]. p. 29. CDA Publication Nº47.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Welding%2C+Brazing+and+Soldering+of+Copper+and+its+Alloys&rft.place=England&rft.pages=29&rft.edition=4th&rft.pub=Copper+Development+Association&rft.date=1956&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAutogenous+welding" class="Z3988"></span></span> </li> <li id="cite_note-FOOTNOTEWelding,_Brazing_and_Soldering_of_Copper_and_its_Alloys195283–84-2"><span class="mw-cite-backlink">^ <a href="#cite_ref-FOOTNOTEWelding,_Brazing_and_Soldering_of_Copper_and_its_Alloys195283–84_2-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-FOOTNOTEWelding,_Brazing_and_Soldering_of_Copper_and_its_Alloys195283–84_2-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><a href="#CITEREFWelding,_Brazing_and_Soldering_of_Copper_and_its_Alloys1952">Welding, Brazing and Soldering of Copper and its Alloys (1952)</a>, pp. 83–84.</span> </li> <li id="cite_note-Roepke,_2009-3"><span class="mw-cite-backlink">^ <a href="#cite_ref-Roepke,_2009_3-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Roepke,_2009_3-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRoepke2009" class="citation journal cs1">Roepke, C (August 2009). <a rel="nofollow" class="external text" href="https://app.aws.org/wj/supplement/wj0809-159.pdf">"Hybrid Laser Arc Welding of HY-80 Steel"</a> <span class="cs1-format">(PDF)</span>. <i>Supplement to Weld. J</i>. <b>88</b>: 159–167.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Supplement+to+Weld.+J.&rft.atitle=Hybrid+Laser+Arc+Welding+of+HY-80+Steel&rft.volume=88&rft.pages=159-167&rft.date=2009-08&rft.aulast=Roepke&rft.aufirst=C&rft_id=https%3A%2F%2Fapp.aws.org%2Fwj%2Fsupplement%2Fwj0809-159.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AAutogenous+welding" class="Z3988"></span></span> </li> </ol></div></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Autogenous_welding&oldid=1176535051">https://en.wikipedia.org/w/index.php?title=Autogenous_welding&oldid=1176535051</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Category</a>: <ul><li><a href="/wiki/Category:Welding" title="Category:Welding">Welding</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden categories: <ul><li><a href="/wiki/Category:Articles_with_short_description" title="Category:Articles with short description">Articles with short description</a></li><li><a href="/wiki/Category:Short_description_matches_Wikidata" title="Category:Short description matches Wikidata">Short description matches Wikidata</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> This page was last edited on 22 September 2023, at 10:17<span class="anonymous-show"> (UTC)</span>.</li> <li id="footer-info-copyright">Text is available under the <a href="/wiki/Wikipedia:Text_of_the_Creative_Commons_Attribution-ShareAlike_4.0_International_License" title="Wikipedia:Text of the Creative Commons Attribution-ShareAlike 4.0 International License">Creative Commons Attribution-ShareAlike 4.0 License</a>; additional terms may apply. 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