ⴞᖅ ✺ᣔ✺ z A-TIG؍ㅜ1ㄐ˖儈᭸䶎⟄ॆᶱ≄փ z ✝эTIG✺ (IILFLHQW7,*ZHOGLQJWHFKQLTXHV z TOPTIG✺ z ৼ䫘ᶱTIG✺ z MIAB✺ z ਈᶱᙗㅹ⿫ᆀᕗ✺ z TIPTIG✺᧕ Dr. Sanbao LIN ----------------------------------- Department of Welding For HarbinHIT students Institute of Technology use only For HIT students use only China ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /1 ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /2 1. Limitation of conventional TIG welding z limited thickness of material which can be welded in a single pass 1.1 A-TIG✺ Weld penetration achievable in single pass TIG welding of stainless steel is limited to 3 mm when using argon as 1.1 Activating Flux Assisted TIG Welding shielding gas. z poor tolerance to some material composition (cast to cast variations) z the low productivity Poor productivity in TIG welding results from a combination of low welding speeds and in thicker material the high number of passes required to fill the joint. For HIT students use only For HIT students use only ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /3 ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /4 2. Advantages of A-TIG welding Penetration increase z The new process enables single pass welding of higher thickness plates with higher welding speed and hence reduced heat input. к˖A-TIG઼TIG✺Ⲵ⭥ᕗ z Enhanced productivity and reduced consumption of filler л˖6mmн䬸䫒ᶯˈᨀ儈⟄␡1.5-2.5ؽ wire z Residual stresses are reduced significantly (more than 70%) in A-TIG weld joints compare to conventional TIG weld joints and the weld joints are distortion free. z Significant improvement in creep-rupture life (more than 75%) z Significant reduction in the cost of fabrication (more than 50%) z Up to 25 mm thick plates can be welded using double side welding procedureFor HIT with students square edge use preparation only For HIT students use only ˄a)A-PAW⟄␡ᛵߥ (b)PAW⟄␡ᛵߥ ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /5 ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /6 Penetration increase Bead profile improvement ᭩ழ✺㕍ᡀᖒ ᑨ㿴TIG✺ A-TIG✺᧕ ᑨ㿴TIG✺ A-TIG✺᧕ 20mm৊㇑䚃ˈṩ䜘 䀂᧕᧕ཤ 1m䮯✺㕍਴⿽✺᧕ᯩ⌅ᡰ䴰Ⲵ✺䚃ቲᮠ઼ 䫍䗩7mmˈ䱽վປݵ ✺᧕ᰦ䰤ሩ∄ 䠁኎䟿30% For HIT students use only For HIT students use only ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /7 ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /8 Reduce distortion Reduce the porosities ߿ሿਈᖒ ⍫ᙗॆ✺᧕⎸䲔✺㕍≄ᆄ˄䫋ਸ䠁ሩ㕍✺᧕˅ ᑨ㿴TIG✺ A-TIG✺᧕ For HIT students✺᧕ਈᖒ use only For HIT students use only ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /9 ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /10 History of A-TIG welding Available at market z 1960s : former Soviet Union (EO Paton welding institute) z 1990s 㺘 1- 1 ୶ъॆ⍫ᙗࡲ৺䘲⭘ᶀᯉ UK: TWI PATIG - S-A ⻣䭠䫒ǃվਸ䠁䫒ǃCr-Mo 䫒ǃн䬸䫒 US: EWI PATIG - N-A 䭽สਸ䠁(䭽䬜ਸ䠁ǃഐ䭽ਸ䠁 600ǃ690) Japan FASTIG SS-7 н䬸䫒 India CS-325 ⻣䭠䫒ǃվਸ䠁䫒ǃ䬜䫬䫒 China Fi-600 䭽สਸ䠁 HIT Lanzhou university of technology 625 (aerospace) Space For HIT students use only ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /11 ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /12 4. A-TIGⲴᔰਁ઼ᓄ⭘ 4. A-TIGⲴᔰਁ઼ᓄ⭘ н䬸䫒઼⻣䭠䫒 䭽สਸ䠁 z 䭽สਸ䠁⍫ᙗࡲѫ㾱ᡀ࠶Ѫ≗ॆ⢙ˈᴹⲴ⍫ᙗࡲ䟷⭘ঔॆ⢙ᡀ࠶DŽ z EWI൘2000ᒤᐖਣᔰਁҶ⭘Ҿ䭽สਸ䠁A-TIG✺Ⲵ⍫ᙗࡲˈᒦ൘ ᐕъԱъѝ䘋㹼Ҷ䈅⭘DŽ z ަ⹄ࡦⲴ⍫ᙗࡲѫ㾱䪸ሩ䭽สਸ䠁Alloy600ˈҏ䪸ሩAlloy 718઼ Alloy 625䘋㹼Ҷᇎ傼DŽ z ᇎ傼㔃᷌㺘᰾ˈ൘н਼⭥⍱ᶑԦлˈᓄ⭘⍫ᙗࡲਾ⟄␡൷໎࣐൘ 100%ԕкDŽᐕъԱъ֯⭘㺘᰾ˈᑨ㿴TIG✺䴰㾱4䚃✺ᆼ(⭘ᰦ23 ࠶䫏)ˈ֯⭘A-TIG✺ਚ䴰1䚃(3࠶䫏)ᡆ㘵2䚃(12࠶䫏)ণਟ✺ᆼDŽ 䍩⭘㢲ⴱⲴ਼ᰦˈਈᖒ䟿ҏབྷབྷ߿ሿDŽ ৊䭽สਸ䠁 Ⲵ For HIT students⍫ᙗࡲሩ304н䬸䫒⟄␡Ⲵᖡ૽ use only 7.6mm For600 HITA- students use only ᰐǃSiO2ǃTiO2ǃCr2O3ǃ AlF3ǃCaF2ǃNaFǃNaClǃCaCl2 TIG✺᭸᷌ TIG A-TIG ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /13 ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /14 4. A-TIGⲴᔰਁ઼ᓄ⭘ 4. A-TIGⲴᔰਁ઼ᓄ⭘ 䭽สਸ䠁 䭽สਸ䠁 z ഭ޵૸ᐕབྷ൘2007ᒤҏᔰਁҶ⴨ᓄⲴ⍫ᙗࡲ For HIT students use only 5mm䭽สਸ䠁GH4263⍫ᙗࡲ֌⭘᭸᷌ ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /15 ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /16 4. A-TIGⲴᔰਁ઼ᓄ⭘ 4. A-TIGⲴᔰਁ઼ᓄ⭘ 䫋ਸ䠁 䭱ਸ䠁 z ⭡Ҿ䫋ਸ䠁儈⑙лሩO∄䖳᭿ᝏˈ z 2002ᒤ㖾ഭM. MARYAㅹӪ⦷ݸᔰኅҶ䭱ਸ䠁TIG✺⍫ᙗࡲⲴ⹄ ഐ↔䫋ਸ䠁⍫ᙗࡲѫ㾱ᡀ࠶ ウˈ㘳ሏҶӄ⿽ঔॆ⢙ሩ✺㕍⟄␡ǃ⭥ᕗ⭥঻ǃ⭥ᕗ⑙ᓖⲴᖡ૽DŽ ⭡≏ॆ⢙㓴ᡀDŽ z 2004ᒤ૸ᐕབྷ䘋㹼Ҷ㊫լⲴ⹄ウDŽ z ⭡Ҿঔॆ⢙✺᧕ਾ✺㕍㺘䶒⟄⑓䳮ԕ䲔৫ˈᓄ⭘к䘈ᴹᖵҾ䘋а↕ ⲴᔰਁDŽ D ✺䚃↓䶒 E ✺䚃㛼䶒 䫋ਸ䠁㮴Ԧ7,*For✺о$7,* HIT㛼䶒⟄䘿ᛵߥሩ∄ students use only For HIT students use only ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /17 ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /18 4. A-TIGⲴᔰਁ઼ᓄ⭘ 4. A-TIGⲴᔰਁ઼ᓄ⭘ 䬍ਸ䠁 ަᆳᯩ⌅ z ⌅ഭᆖ㘵SIREㅹᔰਁҶ✺ࡲ䗩⭼TIG(FB-TIG)✺ⲴᯠරA-TIG✺ ˈѝ䰤⮉ࠪаᇊ䰤䳉ˈחᯩ⌅DŽ䈕ᯩ⌅ሶ⍫ᙗࡲ⎲ᮧҾᖵ✺✺䚃є ਾ䘋㹼ᑨ㿴TIG ✺ˈ⭥ᕗ൘䰤䳉ѝ㼨䵢Ⲵ䠁኎к⟳✗ˈ֯ᗇ⭥ᕗ❦ ᕗṩ᭦㕙ˈ⟄␡໎࣐DŽ z ਇ↔੟ਁˈޠᐎ⨶ᐕབྷᆖ›бㅹӪ䪸ሩ䬍ਸ䠁ᶀᯉˈᨀࠪҶ࠶४⍫ ᙗTIG(FZ-TIG)✺DŽ䈕ᯩ⌅✺ࡽ൘ᖵ✺✺䚃㺘䶒ѝᗳ४ฏ⎲ᮧվ⟄ ४ฏ࠶࡛⎲ᮧ儈⟄ǃ⋨⛩઼儈חǃ⋨⛩઼վ⭥䱫⦷Ⲵ⍫ᙗࡲˈ൘є ⭥䱫⦷Ⲵ⍫ᙗࡲDŽ PP䬍ਸ䠁ⲴӔ⍱)=7,* ᭸᷌ For HIT students use only For HIT students use only ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /19 ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /20 4. A-TIGⲴᓄ⭘ 4. A-TIGⲴᓄ⭘ н䬸䫒઼⻣䭠䫒 н䬸䫒઼⻣䭠䫒 z A-TIG✺ᰒਟ⭘Ҿ᡻ᐕ✺ˈӖਟ⭘Ҿ㠚ࣘ✺ˈҏ䘲⭘Ҿ਴⿽✺᧕ս z ሩҾ㇑䚃⧟㕍✺᧕ˈA-TIG✺਼ṧਟ⭘Ҿ᡻ᐕ઼㠚ࣘ✺䗷〻ˈԕ৺ 㖞DŽഐѪ㠚ࣘ✺㜭ཏ᧗ࡦ⭥ᕗⲴ儈ᓖˈྲ㾱а⅑✺䘿ᴤ৊Ⲵᶯᶀˈ ਴⿽✺᧕ս㖞DŽ 俆ݸᓄ㘳㲁㠚ࣘ✺DŽ z ᖃ✺᧕ս㖞Ѫᒣ✺(PA, 1G)ᰦˈ൘অ䶒✺ৼ䶒ᡀᖒᰦˈঅ䚃ᴰབྷ৊ z ൘ᒣ✺(PA)ս㖞A-TIG✺᧕⻣䭠䫒ᶯᶀሩ᧕✺㕍ᰦˈ㠚ࣘ✺ਟԕঅ ᓖᴰྭн䎵䗷6mmDŽ 䚃а⅑✺䘿12mmDŽ䴰㾱⌘᜿ྲ᷌✺᧕ᶯᶀ৊ᓖབྷҾ6mmˈ䴰㾱 ൘✺㕍㛼䶒⭘ෛᶯ᭟᫁ˈ䱢→⟄⊐л๼DŽ z ྲᴹ㛼䶒ෛᶯ᭟᫁ˈঅ䚃ਟ✺৊ᓖ໎࣐ࡠ9mmDŽ z ሩҾ৊ᓖབྷҾ12mmⲴᶯᶀˈ᧘㦀䟷⭘ৼ䶒є䚃✺᧕DŽྲ᷌ᇎ䱵㔃 z ᖃ✺᧕ս㖞ѪPC(5G)ᰦˈਟԕ⭘ᑨ㿴ⲴTIGޘս㖞✺㇑䇮༷䘋㹼 ᶴнݱ䇨ৼ䶒✺ˈਟ⭘A-TIG✺໎࣐ṩ䜘⟄䘿␡ᓖˈ߿ቁਾ㔝Ⲵປ A-TIG✺DŽ ݵ✺䚃ᮠ䟿DŽ z ྲ᷌✺᧕ս㖞Ѫ䶎ᒣ✺ս㖞ˈᡆ֯⭘᡻ᐕ✺ˈ൘অ䶒✺ৼ䶒ᡀᖒⲴ ᛵߥлˈᴰབྷਟ✺৊ᓖሿҾ6mmDŽ For HIT students use only For HIT students use only ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /21 ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /22 4. A-TIGⲴᓄ⭘ 4. A-TIGⲴᔰਁ઼ᓄ⭘ 䫋ਸ䠁 н䬸䫒઼⻣䭠䫒 70mm diameter, 5mm wall ૸ᐕབྷ thickness stainless steel tube, welded using the Paton Welding ഭ޵Ḁ䙐㡩ъⲴᓄ⭘ Institute activating flux in the 5G position. For HIT students use only ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /23 ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /24 4. A-TIGⲴᔰਁ઼ᓄ⭘ 4. A-TIGⲴᔰਁ઼ᓄ⭘ н䬸䫒઼⻣䭠䫒 н䬸䫒઼⻣䭠䫒 TIG ໱৊Ѫ5.7mmн䬸䫒㇑TIG✺ A-TIG 1Gˈ㇑䚃✺᧕ 5G, ޘս㖞✺㇑A-TIG For HIT students use only For HIT students use only ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /25 ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /26 4. A-TIGⲴᔰਁ઼ᓄ⭘ 4. A-TIGⲴᔰਁ઼ᓄ⭘ н䬸䫒઼⻣䭠䫒 н䬸䫒઼⻣䭠䫒 z EWIሩA-TIG✺᧕ৼ⴨н䬸䫒䘋㹼⹄ウˈ䟷⭘⍫ᙗࡲਾˈ䫱㍐փਜ਼ ߿ቁˈਈᖒ䟿ᗇࡠ᧗ࡦDŽޕᤱ൘45%-55%ˈ⭡Ҿ✝䗃؍❦䟿ӽ ഭ޵Ḁ㡚ཙᓄ⭘ TIG 5mm 304н䬸䫒A-TIG✺ A-TIG TIG (,=245A, Y=175mm/min, Yf=530mm/min, /a=2.5mm, ForO=10L/min) HIT students use only For HIT students use only A-TIG ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /27 ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /28 4. A-TIGⲴᔰਁ઼ᓄ⭘ 5. оA-TIG✺ᴹޣⲴᆖᵟ㿲⛩ н䬸䫒઼⻣䭠䫒 ⭥ᕗ᭦㕙ᵪ⨶ z ঠᓖG. SRINIVASANㅹӪ䟷⭘⍫ᙗࡲ✺᧕Ҷ5mm৊304Lн䬸䫒 (ᯉ㓴Ԧ(dummy fuel⟳ٷ For HIT students use only For HIT students use only ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /29 ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /30 5. оA-TIG✺ᴹޣⲴᆖᵟ㿲⛩ 5. оA-TIG✺ᴹޣⲴᆖᵟ㿲⛩ 㺘䶒ᕐ࣋⨶䇪 ᷊ V ᷉ coated with TiO voltage bare plate 2 040 80 120 160 workpiece length (mm) ᷊ V ᷉ voltage bare plate coated with Cr2O3 For0 HIT 40 students 80 use 120 only160 For HIT students use only workpiece length (mm) ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /31 ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /32 Ⲵᆖᵟ㿲⛩ 6. ⍫ᙗࡲⲴ֯⭘ޣоA-TIG✺ᴹ .5 z 䇮༷˖ᑨ㿴TIG✺䇮༷ 䱣ᶱᯁ⛩ z ⎲ᮧᯩᔿ˖ z ൘⟄⊐ѝ␫࣐⺛ॆ⢙ǃ≟ॆ⢙ǃ≗ॆ⢙ਾˈ⟄⊐кⲴ⭥ᕗ䱣ᶱᯁ⛩ࠪ ⧠᰾ᱮⲴ᭦㕙ˈ਼ᰦӗ⭏䖳བྷⲴ⟄␡DŽ ᡻ᐕࡧ⎲⌅ z ሩҾ䘉⿽⧠䊑ˈ᮷⥞䇔Ѫ˖␫࣐⍫ᙗࡲਾˈ⟄⊐ӗ⭏Ⲵ䠁኎㫨⊭ਇࡠ ᵪỠ௧⎲⌅ ᣁࡦˈ⭡Ҿ䠁኎㋂ᆀᴤᇩ᱃㻛⭥⿫ˈ൘䠁኎㫨⊭߿ቁⲴᛵߥлˈਚ㜭 ঻࣋≄䴮㖀௧⎲ ᖒᡀ䖳ሿ㤳തⲴ䱣ᶱᯁ⛩ˈ⭥ᕗሬ⭥䙊䚃㍗㕙ˈ൘◰⍫Ҷ⟄⊐޵䜘⭥ ⍫ᙗࡲ㦟㣟✺эᡆ㦟Ⳟ✺ᶑ ⻱ሩ⍱Ⲵ਼ᰦˈ⟄⊐㺘䶒Ⲵㅹ⿫ᆀሩ⍱ਇࡠ߿ᕡˈӾ㘼ᖒᡀ䖳བྷⲴ⟄ ␡DŽ䘉⿽䀓䟺ሩ䶎䠁኎ॆਸ⢙රⲴ⍫ᙗࡲ䖳ᴹ䈤ᴽ࣋ˈնሩ䠁኎ॆਸ z ⌘᜿һ亩˖ ⢙তн䘲⭘DŽ ᕗ䮯ቭਟ㜭⸝ 䙏ᓖធ 㜹ߢ᭸᷌ྭаӋ For HIT students use only For HIT students use only ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /33 ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /34 ⍫ᙗࡲⲴ֯⭘ 6. ⍫ᙗࡲⲴ֯⭘ .6 ࡧᆀ⎲ᮧ For HIT students use only ᵪỠ௧⎲ 㦟㣟✺э ሶ⍫ᙗࡲ✺ࡽ௧ࡠ✺㕍к ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /35 ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /36 Case study 304LN stainless steel weld (10 mm thick) For HIT students use only For HIT students use only 316 LN Stainless steel weld (12 mm thick) ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /37 ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /38 For HIT students use only For HIT students use only ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /39 ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /40 For HIT students use only For HIT students use only ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /41 ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /42 For HIT students use only For HIT students use only ¤Dr. Lin Sanbao, http://weld.hit.edu.cn/~arc , /43 ¤Dr.