Degradation Mechanism of Electrode Tip during Resistance Spot Welding of Zinc-coated Galvannealed Steel Sheets
This study investigated the electrode life and the electrode degradation characteristics during resistance spot welding of zinc-coated galvannealed steel sheets. As a result, it was found that the electrode life in alternate resistance spot welding of galvannealed steel sheets and bare steel sheets...
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| Veröffentlicht in: | QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 2009, Vol.27(3), pp.230-239 |
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| container_title | QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY |
| container_volume | 27 |
| creator | KONDO, Masatsune KONISHI, Tokujiro NOMURA, Koji KOKAWA, Hiroyuki |
| description | This study investigated the electrode life and the electrode degradation characteristics during resistance spot welding of zinc-coated galvannealed steel sheets. As a result, it was found that the electrode life in alternate resistance spot welding of galvannealed steel sheets and bare steel sheets was extremely short in comparison with welding of only galvannealed steel sheets. During alternate resistance spot welding, the ring-shape nuggets were formed easily. The reasons for this is explained by the sticking of the alloy layers formed on the electrode top during previous welding of the galvannealed steel, to the bare steel sheet surface at the following welding of bare steel, so that notable wear took place and the surface profile of electrode tip became flat. Additionally an accumulation of highly resistant carbonaceous substance layer at the center of the electrode top caused an annular flow of the welding current to hinder the nugget formation. |
| doi_str_mv | 10.2207/qjjws.27.230 |
| format | Article |
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Additionally an accumulation of highly resistant carbonaceous substance layer at the center of the electrode top caused an annular flow of the welding current to hinder the nugget formation.</description><subject>Electrode life</subject><subject>Electrode tip</subject><subject>Resistance spot welding</subject><subject>Ringed nugget</subject><subject>Zinc-coated steel sheet</subject><issn>0288-4771</issn><issn>2434-8252</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><recordid>eNpFkFFLwzAQx4MoOObe_AD5AHamSbq0j2POKUwENxF8KZfkumV06Uyq4re3c2O-3HH_-3FwP0KuUzbknKnbj83mOw65GnLBzkiPSyGTnGf8nPQYz_NEKpVekkGMTjOWFSzNVd4j_g5XASy0rvH0Cc0avItb2lR0WqNpQ2ORLt2O2s_g_Iq-YHSxBW-QLnZNS9-wtvu849-dN4lpoEVLZ1B_gfcIdTcsWsSaLtaIbbwiFxXUEQfH3iev99Pl5CGZP88eJ-N5YrgcsWTElK4QdMVAjjjoDLWRmdISNU-tKnJe5UYozmwBGhFEhtIKw4oKBGO6En1yc7hrQhNjwKrcBbeF8FOmrNzrKv90lVyVna4OHx_wTffcCk8whNaZGv9hcSyCnXadslCiF7-6tHjg</recordid><startdate>2009</startdate><enddate>2009</enddate><creator>KONDO, Masatsune</creator><creator>KONISHI, Tokujiro</creator><creator>NOMURA, Koji</creator><creator>KOKAWA, Hiroyuki</creator><general>JAPAN WELDING SOCIETY</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>2009</creationdate><title>Degradation Mechanism of Electrode Tip during Resistance Spot Welding of Zinc-coated Galvannealed Steel Sheets</title><author>KONDO, Masatsune ; KONISHI, Tokujiro ; NOMURA, Koji ; KOKAWA, Hiroyuki</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2460-607bfeabf0a462ab5ebc457b4eb21d7982f8c3720d9abeea35e4d3c09fa300bf3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>jpn</language><creationdate>2009</creationdate><topic>Electrode life</topic><topic>Electrode tip</topic><topic>Resistance spot welding</topic><topic>Ringed nugget</topic><topic>Zinc-coated steel sheet</topic><toplevel>online_resources</toplevel><creatorcontrib>KONDO, Masatsune</creatorcontrib><creatorcontrib>KONISHI, Tokujiro</creatorcontrib><creatorcontrib>NOMURA, Koji</creatorcontrib><creatorcontrib>KOKAWA, Hiroyuki</creatorcontrib><collection>CrossRef</collection><jtitle>QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>KONDO, Masatsune</au><au>KONISHI, Tokujiro</au><au>NOMURA, Koji</au><au>KOKAWA, Hiroyuki</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Degradation Mechanism of Electrode Tip during Resistance Spot Welding of Zinc-coated Galvannealed Steel Sheets</atitle><jtitle>QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY</jtitle><date>2009</date><risdate>2009</risdate><volume>27</volume><issue>3</issue><spage>230</spage><epage>239</epage><pages>230-239</pages><issn>0288-4771</issn><eissn>2434-8252</eissn><abstract>This study investigated the electrode life and the electrode degradation characteristics during resistance spot welding of zinc-coated galvannealed steel sheets. As a result, it was found that the electrode life in alternate resistance spot welding of galvannealed steel sheets and bare steel sheets was extremely short in comparison with welding of only galvannealed steel sheets. During alternate resistance spot welding, the ring-shape nuggets were formed easily. The reasons for this is explained by the sticking of the alloy layers formed on the electrode top during previous welding of the galvannealed steel, to the bare steel sheet surface at the following welding of bare steel, so that notable wear took place and the surface profile of electrode tip became flat. Additionally an accumulation of highly resistant carbonaceous substance layer at the center of the electrode top caused an annular flow of the welding current to hinder the nugget formation.</abstract><pub>JAPAN WELDING SOCIETY</pub><doi>10.2207/qjjws.27.230</doi><tpages>10</tpages><oa>free_for_read</oa></addata></record> |
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| identifier | ISSN: 0288-4771 |
| ispartof | QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY, 2009, Vol.27(3), pp.230-239 |
| issn | 0288-4771 2434-8252 |
| language | jpn |
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| source | Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; J-STAGE (Japan Science & Technology Information Aggregator, Electronic) Freely Available Titles - Japanese |
| subjects | Electrode life Electrode tip Resistance spot welding Ringed nugget Zinc-coated steel sheet |
| title | Degradation Mechanism of Electrode Tip during Resistance Spot Welding of Zinc-coated Galvannealed Steel Sheets |
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