⿥㜞ᒛജ㍑᧼䈱᷷䊶ᾲ㑆䊒䊧䉴ᚑᒻᴺ䈱㐿⊒⎇ⓥઍ⴫⠪㩷 ⼾ᯅᛛⴚ⑼ቇᄢቇ↢↥䉲䉴䊁䊛Ꮏቇ♽㩷 ᢎ᝼㩷 ᫪⻞৻㇢
1.㩷 ✜㩷 ⸒㩷 ⥄േゞߩΆ⾌ะ਄ࠍ⋡⊛ߣߒߡ⥄േゞߩシ㊂ൻ߇ᦸ߹ࠇߡ߅ࠅ㧘㜞ᒛജ㍑᧼ߩ⥄േゞㇱຠ߳ߩ೑↪߇ᕆჇߒߡ߅ࠅ㧘⿥㜞ᒛജ㍑᧼߽ㆡ↪ߐࠇߟߟ޽ࠆ 1), 2)㧚⿥㜞ᒛജ㍑᧼ߪⴣ⓭቟ోᕈࠍะ਄ߔࠆߚ߼ߦ⥄േゞࡏ࠺ࠖߩ㛽ᩰㇱ᧚ߦ૶↪ߐࠇࠆࠃ߁ߦߥߞߡ߈ߡ޿ࠆ߇㧘಄㑆ࡊ࡟ࠬᚑᒻߢߪടᎿ⩄㊀࡮ࠬࡊ࡝ࡦࠣࡃ࠶ࠢߩჇᄢ㧘ᚑᒻᕈ࡮㊄ဳኼ๮ߩૐਅ㧘ㆃࠇ⎕უߥߤ߇໧㗴ߣߥߞߡ޿ࠆ㧚․ߦ㧘
1.2GPa એ਄ߩ⿥㜞ᒛജ㍑ᚑᒻຠߩടᎿᴺߪ߹ߛ⏕┙ߐࠇߡ޿ߥ޿ߩ߇⃻⁁ߢ޽ࠆ㧚 ᾲ㑆ࡊ࡟ࠬᚑᒻߢߪ㧘㍑᧼ࠍടᾲߔࠆߎߣߦࠃߞߡ㧘ᚑᒻ⩄㊀ࠍᄢ᏷ߦᷫዋߐߖ㧘ࠬࡊ࡝ࡦࠣࡃ
࠶ࠢࠍ߶ߣࠎߤߥߊߒ㧘ᚑᒻᕈࠍะ਄ߐߖࠆߛߌߢߥߊ㧘㊄ဳߢᕆ಄ߒߡ὾౉ࠇࠍⴕ߁࠳ࠗࠢࠛࡦ࠴ലᨐ߽ᓧࠄࠇࠆ 3),4)㧚࠳ࠗࠢࠛࡦ࠴ߢߪ㧘900ºC ⒟ᐲߦടᾲߒߡࠝ࡯ࠬ࠹࠽ࠗ࠻⚵❱ߦߒߚ㍑᧼ࠍ
ࡊ࡟ࠬᚑᒻߒ㧘ਅᱫὐߢ଻ᜬߔࠆߎߣߦࠃߞߡ㊄ဳߢᕆ಄ߒߡ⎬޿ࡑ࡞࠹ࡦࠨࠗ࠻⚵❱ߦߔࠆ߽ߩ
ߢ޽ࠅ㧘1.5GPa ⒟ᐲߩᒁᒛᒝߐࠍ᦭ߔࠆ⿥㜞ᒛജᚑᒻຠ߇ᓧࠄࠇࠆ㧚ᚑᒻਛߪᨵࠄ߆ߊ㧘ᚑᒻᓟߪ㕖Ᏹߦ⎬޿⵾ຠ߇ᓧࠄࠇ㧘ℂᗐ⊛ߥᚑᒻᴺߢ޽ࠅ㧘⥄േゞ↪ㇱ᧚ߦㆡ↪ߐࠇߡ޿ࠆ㧚࠳ࠗࠢࠛࡦ࠴↪㍑᧼ߪ὾౉ࠇᕈࠍะ਄ߐߖࠆߚ߼ߦࡏࡠࡦࠍᓸ㊂ᷝടߒߡ߅ࠅ㧘὇⚛㊂ߪ 0.2%⒟ᐲߢ޽ࠆ㧚᫪ࠄ 5)ߪㅢ㔚ടᾲࠍ↪޿ߚᾲ㑆ࡊ࡟ࠬᚑᒻࠍឭ᩺ߒߡ߅ࠅ㧘ᄢဳߢ޽ࠆടᾲἹ߇ᔅⷐߢߥߊߥࠅ㧘ᕆㅦടᾲߢ߈ࠆߚ߼⴫㕙㉄ൻ߇ዋߥߊ㧘ࡊ࡟ࠬ૞ᬺߣߩหᦼ߽ኈᤃߢ޽ࠆ㧚 ᾲ㑆䊒䊧䉴ᚑᒻ䈪䈲䋬৻⥸䈮㜞᷷Ἱ䈮䉋䈦䈩㍑᧼䉕ടᾲ䈚䈩䈇䉎䈏䋬᧼᧚䉕Ἱ䈎䉌಴䈚䈩䊒䊧䉴ᚑᒻ䈜䉎䉁䈪䈮 5s ⒟ᐲ䈎䈎䉍䋬㜞᷷⁁ᘒ䈪ⓨ᳇䈮⸅䉏䉎䈢䉄䋬᧼᧚⴫㕙䈏㉄ൻ䈜䉎䋮䈚䈢䈏䈦䈩䋬ᾲ㑆䊒䊧䉴ᚑᒻຠ䈱♖ᐲ䈲㜞䈒䈭䈒䋬ᚑᒻᓟ䉴䉬䊷䊦㒰෰䈱䈢䉄䈮䉲䊢䉾䊃䊑䊤䉴䊃ಣℂ䈏ᔅⷐ䈮䈭䈦䈩䈇䉎䋮䉴䉬䊷䊦ಣℂ䉕⋭⇛䈜䉎䈢䉄䈮䋬੝㋦䉁䈢䈲䉝䊦䊚䉄䈦䈐ಣℂ䉕䈚䈢㍑᧼䈏ታ↪ൻ䈘䉏䈩䈇䉎䈏䋬䉄䈦䈐䈏ᱷሽ䈜䉎䈫
ኸᴺ♖ᐲ䋬⠴៺⠻ᕈ䈏ૐਅ䈚䋬㍑᧼䈱ଔᩰ䉅㜞䈇䋮᫪ 6),7)ߪ᷷ᾲ㑆ࡊ࡟ࠬᚑᒻ↪ẢṖ೷ࠍ㍑᧼ߦႣᏓߔ
ࠆߎߣߦࠃߞߡ⴫㕙㉄ൻࠍ㒐ᱛߒߡ޿ࠆ㧚 ࠳ࠗࠢࠛࡦ࠴ߐࠇߚᾲ㑆ࡊ࡟ࠬᚑᒻຠߢߪ㧘ㅢᏱో૕߇㜞ᒝᐲൻߔࠆ߇㧘ዪㇱߛߌࠍ㜞ᒝᐲߦߒߚ޿߽ߩ߽޽ࠆ㧚ߚߣ߃߫㧘᠁േㇱຠߢߪធ⸅ㇱઃㄭߛߌ㜞ᒝᐲ߇ᔅⷐߢ޽ࠆ߇㧘ߘࠇએᄖߩㇱಽߪ㜞ᒝᐲࠍᔅⷐߣߒߥߊߓࠎᕈࠍᜬߚߖࠆߚ߼ߦ෻ኻߦ὾౉ࠇࠍ㒐ᱛߒߚ޿㧚߹ߚ㧘࠳ࠗࠢࠛࡦ࠴
ߐࠇߚᚑᒻຠߪ㜞ᒝᐲߢ޽ࠆߚ߼㧘࠻࡝ࡒࡦࠣ߿ⓣᛮ߈ߥߤߩᓟടᎿࠍߖࠎᢿߢⴕ߁ߩߪ࿎㔍ߢ޽ࠅ㧘ㅢᏱ࡟࡯ࠩಾᢿߐࠇߡ޿ࠆ߇㧘࡟࡯ࠩಾᢿߪ↢↥ᕈ߇ૐ޿㧚࠻࡝ࡒࡦࠣ߿ⓣᛮ߈ടᎿࠍⴕߞߚ
⚛᧼ࠍᾲ㑆ࡊ࡟ࠬᚑᒻߔࠆߣᓟടᎿ߇⋭⇛ߢ߈ࠆߣ⠨߃ࠄࠇࠆ߇㧘⵾ຠ♖ᐲ਄ᾲ㑆ࡊ࡟ࠬᚑᒻຠߦኻߒߡᓟടᎿࠍⴕ߁ߎߣ߇ᔅⷐߦߥߞߡ޿ࠆ㧚᫪ࠄ 8)ߪ⿥㜞ᒛജ㍑᧼ߩㅢ㔚ടᾲࠍ↪޿ߚ᷷࡮ᾲ㑆ߖࠎᢿടᎿᴺࠍឭ᩺ߒߡ߅ࠅ㧘ߖࠎᢿ⩄㊀߇ᄢ᏷ߦૐਅߔࠆߛߌߢߥߊ㧘㜞ຠ૏ߥಾญ㕙߇ᓧࠄ䉏䉎䋮㩷 䊃䊤䊮䉴䊚䉾䉲䊢䊮䈭䈬䈱ᱤᒻㇱຠ䈲಄㑆㎊ㅧ䈪ᚑᒻ䈘䉏䈩䈇䈢䈏䋬᧼㎊ㅧ䉕ㆡ↪䈚䈩᧼᧚䈎䉌ᚑᒻ䈘䉏䉎䉋䈉䈮䈭䈦䈩䈐䈩䈇䉎䋮᧼᧚䉕⛉䈦䈩౞╴ኈེ䈮ᚑᒻ䈚䈢ᓟ䋬䈚䈗䈐ടᎿ䈮䉋䈦䈩஥ო䉕䉴䊒䊤䉟䊮ᚑᒻ䈚䈩ᱤᒻㇱຠ䈏⵾ㅧ䈘䉏䈩䈇䉎 9)䋮᧼㎊ㅧ䈮䉋䈦䈩ᚑᒻ䈘䉏䉎ᱤᒻㇱຠ䉅㜞ᒛജ㍑᧼䉕ㆡ↪䈚䈩シ㊂ൻ䉕࿑䉎䈖䈫䈏ᦸ䉁䉏䈩䈇䉎䈏䋬䉴䊒䊤䉟䊮ᚑᒻ䈪䈲䈐䈶䈚䈇ᄌᒻ䉕ട䈋䉎䈢䉄䋬ᒝᐲ䈏ᄢ䈐䈇㜞ᒛജ㍑᧼䉕ㆡ↪
䈜䉎䈖䈫䈲ኈᤃ䈪䈲䈭䈇䋮ᚑᒻ⩄㊀䉕ᷫዋ䈘䈞䈩ᑧᕈ䉕ะ਄䈜䉎䈢䉄䈮䋬᷷䊶ᾲ㑆䊒䊧䉴ᚑᒻ䈏ᬌ⸛䈘䉏䈩䈇䉎䈏䋬⛉䉌䉏䈢ኈེ䉕㜞᷷Ἱ䈪ടᾲ䈜䉎䈫䋬᷷ᐲૐਅ䈫⴫㕙㉄ൻ䈏໧㗴䈫䈭䉍䋬ടᾲᣇᴺ䉕ᬌ⸛䈜䉎ᔅⷐ䈏䈅䉎䋮
ᧄ⎇ⓥ䈪䈲䋬⿥㜞ᒛജ㍑᧼䈱᷷䊶ᾲ㑆䊒䊧䉴ᚑᒻᴺ䉕㐿⊒䈚䈢䋮䉁䈝䋬㜞᷷Ἱ䉕↪䈇䈢ᾲ㑆䊒䊧䉴ᚑᒻ䈮䈍䈇䈩䋬䉻䉟䉪䉣䊮䉼↪㍑᧼䈮䊒䊧䉮䊷䊃䉴䉬䊷䊦ᛥ೙೷䉕ႣᏓ䈜䉎䈖䈫䈮䉋䈦䈩⴫㕙㉄ൻ䉕ૐᷫ䈚䈢䋮䈧䈑䈮䋬㊄ဳ䈮Ḵ䉕ઃ䈔䈩ᚑᒻຠ䉕㊄ဳ䈫ዪㇱធ⸅䈘䈞䈩ዪㇱ䈣䈔䉕ᕆ಄䈜䉎ᾲ㑆䊒䊧䉴ᚑᒻᴺ䉕㐿⊒䈚䈩䋬ᒝᐲಽᏓ䉕᦭䈜⿥㜞ᒛജ㍑ᚑᒻຠ䉕⵾ㅧ䈚䈢䋮䈘䉌䈮䋬౞╴ኈེ஥ო䉕ㅢ㔚ടᾲ䈜䉎㜞ᒛജ㍑᧼
䈱᷷䊶ᾲ㑆䉴䊒䊤䉟䊮ᚑᒻ䉕㐿⊒䈚䈢䋮㧙㧙

2.㩷 ㍑᧼䈱ᾲ㑆䊒䊧䉴ᚑᒻ䈮䈍䈔䉎䊒䊧䉮䊷䊃䉴䉬䊷䊦ᛥ೙೷䈮䉋䉎㉄ൻ㒐ᱛ
2.1㩷 ታ㛎ᣇᴺ
ടᾲ䈚䈢㍑᧼䉕䊒䊧䉴ᚑᒻ䈭䈚䈪⥄ὼ಄ළ䈚䈩䋬䉴䉬䊷䊦䈏䈬䈱⒟ᐲ᧼᧚䈮⊒↢䈜䉎䈎䉕⺞䈼䈢䋮᧼ෘ
1.2mm 䈱䉻䉟䉪䉣䊮䉼↪㍑᧼(૑෹㊄ዻᎿᬺ䊺⵾䉴䊚䉪䉣䊮䉼, C: 0.21%, Si: 0.25%, Mn: 1.2%)䉕ታ㛎䈮↪
䈇䈢䋮㜞᷷ᒁᒛ⹜㛎䈎䉌ᓧ䉌䉏䈢ᒁᒛᒝ䈘䈍䉋䈶ోિ䈶䈫᷷ᐲ䈱㑐ଥ䉕 Fig. 1 䈮␜䈜䋮᷷ᐲ䈫䈫䉅䈮䋬ᒁᒛᒝ䈘䈲ᷫዋ䈚䈩ోિ䈶䈲Ⴧട䈜䉎䈏䋬900ºC એ਄䈪䈲㉄ൻ䈱⒟ᐲ䈏ᄢ䈐䈒䈭䈦䈩ోિ䈶䈲ᷫዋ䈜䉎䋮
800ºC 䈱ᒁᒛᒝ䈘䈲Ᏹ᷷䈱⚂ 1/8 䈪䈅䉍䋬䊒䊧䉴ᚑᒻ䈮䈍䈔䉎⩄㊀䉅䈖䈱ഀว䈪ૐਅ䈜䉎䋮

600

60

400

40
Tensile strength

200
0200
400
600
800
Heating temperature T /ºC

Elongation /%Tensile strength /MPa

1001000㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 Table 1㩷 ㉄ൻ㒐ᱛ↪䊒䊧䉮䊷䊃䉴䉬䊷䊦ᛥ
Elongation㩷 㩷 800
㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷80㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 ೙೷

OxidationABpreventiveoil
Element K, B, C, Na K, B, C, Na, P, Ca20
01000

Fig. 1㩷 㜞᷷ᒁᒛ⹜㛎䈎䉌ᓧ䉌䉏䈢䉻䉟䉪䉣䊮䉼↪㍑᧼䈱㩷 㩷 ᒁᒛᒝ䈘䈍䉋䈶ోિ䈶䈫᷷ᐲ䈱㑐ଥ
Table 1 䈮␜䈜 2 ⒳㘃䈱䊒䊧䉮䊷䊃䉴䉬䊷䊦ᛥ೙೷䋨ᣣᧄᎿ૞ᴤ䊺⵾䋩䈮䈧䈇䈩⹜㛎䉕ⴕ䈦䈢䋮䈬䈤䉌䈱䉴䉬䊷䊦ᛥ೙೷䉅㜞᷷䈪ᶧൻ⊹⤑䉕ᒻᚑ䈚䋬ⓨ᳇䈫䈱ធ⸅䉕㒐ᱛ䈚䈩㉄ൻᛥ೙ലᨐ䉕᦭䈚䈩䈇䉎䋮䉴䉬䊷䊦ᛥ೙೷ A 䈲䉴䊁䊮䊧䉴᷷㑆ടᎿẢṖᴤ䈪䈅䉍䋬ᕆㅦㅢ㔚ടᾲ䈮䈍䈇䈩䈲ᦨ䉅㜞䈇ᛥ೙ലᨐ䉕␜䈚䈢䋮੹࿁ᣂ䈢䈮䉼䉺䊮᧚䈱᷷㑆⛉䉍ടᎿ↪ẢṖ೷䈪䈅䉎䉴䉬䊷䊦ᛥ೙೷ B 䉅⹏ଔ䈚䈢䋮䉴䉬䊷䊦ᛥ೙೷䈱ႣᏓᣇᴺ䉕 Fig. 2 䈮␜䈜䋮㐳䈘 130mm䋬᏷ 20mm䋬᧼ෘ 1.2mm 䈱㐳ᣇᒻ⹜㛎 䉕૶↪䈚䈢䋮⹜㛎 䉕⿥㖸ᵄᵞᵺᓟੇ῎䈘䈞䋬䈠䈱ᓟ䉴䊘䊮䉳䉕૶䈦䈩䉴䉬䊷䊦ᛥ೙೷䉕ႣᏓ䈚䈩ౣ䈶ੇ῎䈘䈞䉎䋮䉴䉬䊷䊦ᛥ೙೷䈲᳓ṁᕈ䈪䈅䉍䋬ႣᏓᓟੇ῎䈘䈞䉎䈫⚛᧼⴫㕙䈮⊹⤑䉕ᒻᚑ䈜䉎䋮੍䉄ടᾲ䈚䈢㔚᳇Ἱౝ䈮㍑᧼䉕౉䉏䉎䈖䈫䈮䉋䈦䈩ടᾲ䈚䋬ടᾲቢੌᓟ䈮Ἱ䈎䉌㍑᧼䉕ข䉍಴䈚⥄ὼ಄ළ䈚䈢䋮ᾲ㑆䊊䉾䊃ᦛ䈕ടᎿታ㛎䈮↪䈇䈢ⵝ⟎䉕 Fig. 3 䈮␜䈜䋮㔚᳇Ἱ䈪ടᾲ䈚䈢ᓟ 5s 䈪㊄ဳౝ䈻៝ㅍ䈚䈩䊊䉾䊃ᦛ䈕ടᎿ䉕ⴕ䈇䋬ਅᱫὐ䈮䈍䈇䈩଻ᜬᤨ㑆 t=2䋬3.5䋬5s 䈪ᕆ಄䈚䈢䋮⃻⁁䈱ᾲ㑆䊒䊧䉴ᚑᒻ䈮䈍䈇䈩䉅៝ㅍᤨ㑆䈲 5s ⒟ᐲ䈪䈅䉎䋮ᚑᒻ૕䈱⴫㕙ᕈ⁁䋬ォ౮♖ᐲ䋬⎬䈘䋬☻䈘䉕᷹ቯ䈚䈢䋮

Sheet

Oxidation
preventive oil
Sponge rubber

Ethanol

Punch
37.2

40

Sheet
Guide
208

Sheet
holder03) ApplicationR12) Drying.
R11) Ultrasoniccleaning (3 times)

Die4) Drying6) Natural cooling 5) Heating
Fig. 2㩷 䉴䉬䊷䊦ᛥ೙೷䈱ႣᏓᣇᴺ㩷㩷 㩷 Fig. 3 ᾲ㑆䊊䉾䊃ᦛ䈕ടᎿታ㛎䈮↪䈇䈢ⵝ⟎㧙㧙

2.2㩷 䊊䉾䊃ᦛ䈕ടᎿ䈱ታ㛎⚿ᨐਅᱫὐ଻ᜬᤨ㑆 t=3.5s 䈮䈍䈔䉎ᾲ㑆䊊䉾䊃ᦛ䈕ടᎿ䈘䉏䈢ᚑᒻ૕䉕 Fig. 4 䈮␜䈜䋮ႣᏓ࿁ᢙ n1 䈱႐ว䋬T850ºC એ਄䈪䈲㍑᧼⴫㕙ో૕䈪⴫㕙ጀ䈏䈲䈒㔌䈚䈩䈍䉍䋬n2 䈪䈲䈲䈒㔌䈲ዋ䈭䈒䈭䉍䋬T850ºC,n3 䈪䈲䈲䈒㔌䈏ⷰኤ䈘䉏䈭䈇䋮৻ᣇ䋬n3 䈪䈲 T900ºC 䈍䈇䈩䉻䉟䉴ⷺㇱ䈭䈬ᄌᒻ䈏ᄢ䈐䈇ㇱಽ䈮䈍䈇䈩䈣䈔ዋ䈚䈱䈲䈒㔌䈏↢䈛䈩䈇䉎䋮
n=1, t=3.5s 䈮䈍䈔䉎ᾲ㑆䊊䉾䊃ᦛ䈕ᚑᒻ૕䈱஥㕙౮⌀䉕 Fig. 5 䈮␜䈜䋮಄㑆ᦛ䈕ടᎿ䈘䉏䈢ᚑᒻ૕䈪䈲䋬ᄢ䈐䈭䉴䊒䊥䊮䉫䊋䉾䉪䉕↢䈛䈩䈇䉎䈏䋬ടᾲ᷷ᐲ䈱Ⴧട䈫䈫䉅䈮䉴䊒䊥䊮䉫䊋䉾䉪䈲ᷫዋ䈚䋬T=700ºC એ਄䈪䈲䉴䊒䊥䊮䉫䊋䉾䉪䈲ⷰኤ䈘䉏䈭䈇䋮n=1
n=2(a) Room temperature(b) T=600ºC(c) T=700ºC(d) T=800ºC

n=3㩷 㩷 㩷 㩷 (a) T=850ºC㩷(b) T=900ºC㩷 㩷 㩷 Fig. 4㩷 ᾲ㑆䊊䉾䊃ᦛ䈕ടᎿ䈘䉏䈢ᚑᒻ૕㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 Fig. 5 ᾲ㑆䊊䉾䊃ᦛ䈕ᚑᒻ૕䈱஥㕙౮⌀
n=1 䈮䈍䈔䉎䊊䉾䊃ᦛ䈕ᚑᒻ૕䈱ᐩਛᄩㇱ䈫䉻䉟䉴ⷺㇱ䈱䊎䉾䉦䊷䉴⎬䈘䈫ടᾲ᷷ᐲ䈱㑐ଥ䉕 Fig. 6 䈮␜䈜䋮ᐩਛᄩㇱ䋬䉻䉟䉴ⷺㇱ䈫䉅䋬⎬䈘䈲ടᾲ᷷ᐲ䈫䈫䉅䈮਄᣹䈚䋬t=3.5䋬5s 䈱⎬䈘䈮Ꮕ䈲䈭䈎䈦䈢䋮T=850ºCએ਄䈪䈲䋬ᐩਛᄩㇱ䈪⚂ 520HV䋬䉻䉟䉴ⷺㇱ䈪⚂ 480HV 䈱⎬䈘䈏ᓧ䉌䉏䈢䋮T=850ºC䋬t=3.5s એ਄䈪චಽ䈭὾౉䉏䈏ⴕ䉒䉏䈩䈍䉍䋬1.5GPa ⚖䈱ᒁᒛᒝ䈘䈮⋧ᒰ䈜䉎⎬䈘䈏ᓧ䉌䉏䈢䋮
t=5s

Hardness /HV500

600

3.5s

400
300

As-received

200
100
0800

2s

Measuring point

875
850
900
925
Heating temperature T /ºC㩷 㩷 㩷 㩷 㩷 (a) Bottom center

825

t=5s
3.5s
2s

500
Hardness /HV600400300

As-received200

Measuring point

100

950

0800

㩷㩷㩷㩷㩷

825875850
900925
Heating temperature T /ºC

950(b) Die cornerFig. 6㩷 䊊䉾䊃ᦛ䈕ᚑᒻ૕䈱ᐩਛᄩㇱ䈫䉻䉟䉴ⷺㇱ䈱䊎䉾䉦䊷䉴⎬䈘䈫ടᾲ᷷ᐲ䈱㑐ଥ
n=1, t=3.5s 䈮䈍䈔䉎䊊䉾䊃ᦛ䈕ᚑᒻ૕䈱ᐩਛᄩㇱ䈫䉻䉟䉴ⷺㇱ䈱⚵❱౮⌀䉕 Fig. 7 䈮␜䈜䋮ടᾲ᷷ᐲ䈱਄᣹䈫䈫䉅䈮䊙䊦䊁䊮䉰䉟䊃⚵❱䈏Ⴧ䈋䋬T=850ºC એ਄䈪䈲䊙䊦䊁䊮䉰䉟䊃䈱㊂䈲৻ቯ䈮䈭䈦䈩䈍䉍䋬⎬䈘䉅৻ቯ䈮䈭䈦䈢䋮䉻䉟䉴ⷺㇱ䈪䈲䋬ᐩㇱ䈮Ყ䈼䈩ᕆ಄䈱⒟ᐲ䈏ૐ䈒䊔䉟䊅䉟䊃⚵❱䈏ᄙ䈒ᨆ಴䈚䋬Fig. 6 䈮䈍䈇䈩⎬䈘䈏ዋ䈚ૐ䈒䈭䈦䈢䋮㧙㧙

T=800ºC

T=850ºC㩷 㩷 㩷 㩷 㩷 㩷 (a) Bottom center㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷T=900ºC㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 50Pm㩷㩷(b) Die cornerFig. 7㩷 䊊䉾䊃ᦛ䈕ᚑᒻ૕䈱ᐩਛᄩㇱ䈫䉻䉟䉴ⷺㇱ䈱⚵❱౮⌀
2.3㩷 䉴䉬䊷䊦ᛥ೙೷䈱ᵞᵺ㩷 䊊䉾䊃ᦛ䈕ᚑᒻ૕䈮䈲⴫㕙ጀ䈏ᱷሽ䈚䈩䈍䉍䋬䈠䈱ᵞᵺ䉕ⴕ䈦䈢䋮ᾲ㑆䈪ടᎿ䈘䉏䈢ᚑᒻ૕䈪䈲䋬ᱷሽ䈚䈢⴫㕙ጀ䉕᳓䈪䈲ᵞᵺ䈪䈐䈭䈎䈦䈢䈢䉄䋬70㫰C 䈮ടᾲ䈚䈢 10%Ớᐲ䈱䊥䊮㉄䈮䊊䉾䊃ᦛ䈕ᚑᒻ૕䉕 2 ಽ㑆ᶐ䈚䋬⴫㕙☻䈘䉕᷹ቯ䈚䈢䋮⴫㕙㉄ൻ㒐ᱛ↪䉄䈦䈐ಣℂ㍑᧼䈮䈍䈇䈩䉅䋬䈖䈱ṁᶧ䈪䉄䈦䈐ጀ䉕㒰෰䈜䉎䈖䈫䈲น⢻䈪䈅䉎䈏䋬㒰෰䈮䈲㐳ᤨ㑆䉕ᔅⷐ䈫䈚䋬⴫㕙ᕈ⁁䉅ૐਅ䈜䉎䋮㩷 T=900ºC, t=3.5s 䈮䈍䈔䉎ᵞᵺ೨ᓟ䈱䊊䉾䊃ᦛ䈕ᚑᒻ૕ᐩਛᄩㇱ䈫䉻䉟䉴ⷺㇱ䈱⴫㕙౮⌀䉕 Fig. 8 䈮␜䈜䋮T=900ºC 䈪䈲䋬ෘ䈇⴫㕙ጀ䈏ᒻᚑ䈘䉏䉎䈢䉄 n=1 䈮䈍䈇䈩䈲ቢో䈮㒰෰䈜䉎䈖䈫䈏䈪䈐䈭䈒㤥䈇᢬ὐ䈏ᱷ䉍䋬n=2 એ਄䈪䈲⴫㕙ጀ䈲ᱷሽ䈚䈩䈇䈭䈇䋮䈭䈍䋬T=850ºC 䈪䈲⴫㕙ጀ䈏⭯䈇䈢䉄 n=1 䈮䈍䈇䈩䉅⴫㕙ጀ䉕㒰෰䈜䉎䈖䈫䈏䈪䈐䈢䋮


n=1n=1n=2n=2n=310Pm

Before cleaning After cleaning(a) Bottom center㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷n=3

Before cleaning After cleaning㩷 㩷 㩷 㩷 㩷 㩷 㩷 (b) Die corner㩷 㩷 㩷 Fig. 8㩷 T=900ºC 䈮䈍䈔䉎ᵞᵺ೨ᓟ䈱䊊䉾䊃ᦛ䈕ᚑᒻ૕ᐩਛᄩㇱ䈫䉻䉟䉴ⷺㇱ䈱⴫㕙౮⌀
3.㩷 ᾲ㑆䊊䉾䊃ᦛ䈕ടᎿ䈮䈍䈔䉎Ḵઃ䈐㊄ဳ䉕↪䈇䈢ዪㇱ䉻䉟䉪䉣䊮䉼
3.1 Ḵઃ䈐㊄ဳ䉕↪䈇䈢ዪㇱ䉻䉟䉪䉣䊮䉼ᴺ ᾲ㑆䊒䊧䉴ᚑᒻ䈮䈍䈇䈩㊄ဳ䈫ធ⸅䈚䈭䈇ㇱಽ䈲὾౉䉏䈘䉏䈭䈇䈖䈫䉕೑↪䈚䈩䋬Fig. 9 䈮␜䈜䉋䈉䈮䊌䊮䉼䈫䉻䉟䉴䈮Ḵ䉕ઃ䈔䉎䈖䈫䈮䉋䈦䈩⚛᧼䉕ዪㇱ⊛䈮ធ⸅䈘䈞䋬ዪㇱ䉻䉟䉪䉣䊮䉼䉕ⴕ䈉䋮ਅᱫὐ䈮䈍䈇䈩㊄ဳ䈫ធ⸅䈚䈩䈇䉎ㇱಽ䈣䈔䈏὾౉䉏䈘䉏䋬ᒝᐲಽᏓ䉕᦭䈜䉎ᚑᒻ૕䈏ᓧ䉌䉏䋬ᧄᣇᴺ䈲㊄ဳ䈮Ḵ䉕ઃ䈔䉎䈣䈔䈱◲ᤃ䈭䉅䈱䈪䈅䉎䋮㧙㧙

PunchSheetQuenchingDie(a) Resistance heating(b) Holding at bottom dead centerFig. 9㩷 Ḵઃ䈐㊄ဳ䉕↪䈇䈢ዪㇱ䉻䉟䉪䉣䊮䉼ᴺ

11142021㩷 ዪㇱ䉻䉟䉪䉣䊮䉼䊊䉾䊃ᦛ䈕ടᎿⵝ⟎䉕 Fig. 10䋬ᷓ䈘 1mm 䈱Ḵ䈏ઃ䈇䈢䊌䊮䉼䈫䉻䉟䉴䉕 Fig. 11 䈮␜䈜䋮䊊䉾䊃ᚑᒻ૕䈮䈍䈇䈩䋬ᐩⷺㇱ䈫䊐䊤䊮䉳ⷺㇱ䈣䈔䈏㜞ᒝᐲ䉕ᔅⷐ䈫䈜䉎䈢䉄䋬䈠䉏䉌䈱ㇱಽ䈏㊄ဳ䈫ធ⸅䈜䉎䉋䈉䈮䈚䈩䋬ᚑᒻ૕ᐩਛᄩㇱ䈫஥ოㇱ䈮Ḵ䉕ઃ䈔䈢䋮4MPa 䈱㔚ᭂ᛼䈋䈱࿶ജ䈮䈍䈇䈩䋬⚛᧼䈲
900ºC 䈮⚂ 2.3 ⑽䈪ㅢ㔚ടᾲ䈘䉏䋬䈠䈱ᓟ 0.2 ⑽䈪䊊䉾䊃ᦛ䈕ടᎿ䈘䉏䋬ਅᱫὐ䈮䈍䈇䈩 0.6MPa 䈱᧼᛼䈋࿶ജ䈪 t=3.5 ⑽଻ᜬ䈘䉏䈢䋮

Punch

35.2
R1Sheet14.8.8Insulator
Electrode

28
18.8

Sheet
holder

0R137.2

404224Die(a) Punch(b) Die㩷 㩷 Fig. 10㩷 ዪㇱ䉻䉟䉪䉣䊮䉼䊊䉾䊃ᦛ䈕ടᎿⵝ⟎㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 Fig. 11㩷 Ḵઃ䈐䊌䊮䉼䈫䉻䉟䉴3.2㩷 䊊䉾䊃ᦛ䈕ടᎿ⚿ᨐዪㇱ䉻䉟䉪䉣䊮䉼䊊䉾䊃ᦛ䈕ᚑᒻ૕䈫䊐䊤䊮䉳ⷺㇱ䉕 Fig. 12 䈫 Fig. 13 䈮䈠䉏䈡䉏␜䈜䋮Ყセ䈫䈚䈩䋬Ḵ
䈭䈚㊄ဳ䉕↪䈇䈢ㅢ㔚ടᾲ䈫㜞᷷Ἱടᾲ 7)䈱⚿ᨐ䉅␜䈜䋮㜞᷷Ἱടᾲ䈪䈲ᄙ䈒䈱㉄ൻ䉴䉬䊷䊦䈏⊒↢䈚䈩䈇䉎䈏䋬ㅢ㔚ടᾲ䈲㕖Ᏹ䈮ᕆㅦ䈪䈅䉍㉄ൻ䉴䉬䊷䊦䈲䈾䈫䉖䈬⊒↢䈚䈩䈇䈭䈒䋬⴫㕙⁁ᘒ䈏⦟ᅢ䈭ᚑᒻຠ䈏ᓧ䉌䉏䉎䋮䉁䈢䋬ᚑᒻ૕䈲䈾䈫䉖䈬䉴䊒䊥䊮䉫䈏↢䈛䈩䈇䈭䈒䋬ᒻ⁁ಓ⚿ᕈ䈲㜞䈇䋮UpperLower(a) Furnace heating(a) Furnace heating(b) Resistance heating, non-grooved tools(b) Resistance heating, non-grooved tools(c) Resistance heating, grooved tools(c) Resistance heating, grooved tools㩷 㩷 㩷 㩷 㩷 UpperLower㩷 㩷 㩷 Fig. 12㩷 ዪㇱ䉻䉟䉪䉣䊮䉼䊊䉾䊃ᦛ䈕ᚑᒻ૕㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 Fig. 13 ᚑᒻ૕䈱䊐䊤䊮䉳ⷺㇱ㧙㧙

r-r0 /mm

Bending load /kN䊊䉾䊃ᦛ䈕ടᎿ⩄㊀䉕 Fig. 14 䈮␜䈜䋮Ḵઃ䈐䈫Ḵ䈭䈚㊄ဳ䈪䈲䋬ടᎿ⩄㊀䈲䈾䈿ห䈛䈪䈅䉍䋬಄㑆ടᎿ
⩄㊀䈱⚂ 1/3 䈮䈭䈦䈩䈇䉎䋮ᚑᒻ૕䈱䉻䉟䉴ⷺㇱォ౮♖ᐲ䉕 Fig. 15 䈮␜䈜䋮಄㑆ടᎿ䈫Ყ䈼䈩ⷺㇱォ౮♖ᐲ䈲ᄢ᏷䈮ᡷༀ䈘䉏䈩䈇䉎䈏䋬Ḵઃ䈐㊄ဳ䈱ᣇ䈏Ḵㇱ䈱㕖ធ⸅䈮䉋䈦䈩ⷺㇱ䈮૞↪䈜䉎ᒛജ䈏ዊ䈘䈒䈭䉍䋬Ḵ䈭䈚㊄ဳ䉋䉍䉅ォ౮♖ᐲ䈲⧯ᐓૐ䈇䋮40
2
rGrooved
30
r0
1.5

20

0.5

10Die

1
Non-grooved

00200 400 600 800 1000
Cold
Non-grooved Grooved
Heating
temperature T /ºC
bending tools
tools㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 Fig. 14㩷 䊊䉾䊃ᦛ䈕ടᎿ⩄㊀㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 Fig. 15㩷 ᚑᒻ૕䈱䉻䉟䉴ⷺㇱォ౮♖ᐲ

Vickers hardness /HV20㩷 ዪㇱ䉻䉟䉪䉣䊮䉼䊊䉾䊃ᦛ䈕ᚑᒻ૕䈱㐳ᚻᣇะ⎬䈘ಽᏓ䉕 Fig. 16 䈮␜䈜䋮䈢䈣䈚䋬⚛᧼䈱ਔ┵䈲㔚ᭂ䈫ធ⸅䈚䈩᷷ᐲ䈲਄᣹䈚䈩䈇䈭䈒䋬⎬䈘䈲⚛᧼䈫䈾䈿ห䈛䈪䈅䉎䋮Ḵ䈭䈚㊄ဳ䈪䈲᷷ᐲ䈏ૐ䈇ਔ┵䉕㒰䈇䈢㗔ၞ䈪⎬䈘䈏ᄢ䈐䈒䈭䈦䈩䈇䉎䈏䋬Ḵઃ䈐㊄ဳ䉕↪䈇䉎䈖䈫䈮䉋䈦䈩䋬㊄ဳ䈫ធ⸅䈚䈭䈇ᚑᒻ૕ᐩਛᄩㇱ䈫஥ოㇱ䈮䈍䈇䈩⎬䈘䈱਄᣹䉕㒐ᱛ䈪䈐䋬ᐩⷺㇱ䈫䊐䊤䊮䉳ⷺㇱ䈪⎬䈘䈲㜞䈒䈭䈦䈩䈍䉍䋬ᒝᐲಽᏓ䉕᦭䈜䉎ᚑᒻ૕䈏ᓧ䉌䉏䈢䋮T=950ºC 䈪䈲䋬ᾲવዉ䈮䉋䈦䈩ᐩਛᄩㇱ䈮䈍䈇䈩䉅᷷ᐲ䈏਄᣹䈚䈩⎬䈘䈏ᄢ䈐䈒䈭䈦䈩䈍䉍䋬ዪㇱ䉻䉟䉪䉣䊮䉼䈱႐ว䈲ടᾲ᷷ᐲ䈏㜞䈜䈑䉎䈫ዪㇱ䉻䉟䉪䉣䊮䉼䈱ലᨐ䈏ᓧ䉌䉏䈭䈒䈭䉎䋮৻ᣇ䋬᧼᛼䈋࿶ജ䉕૞↪䈘䈞䉎ᔅⷐ䈏䈅䉎䈢䉄䋬ᚑᒻ૕䈱䊐䊤䊮䉳ㇱ䈲㊄ဳ䈫ធ⸅䈜䉎䈖䈫䈮䈭䉍䋬䈖䈱ㇱಽ䉅ᕆ಄䈘䉏䈩⎬䈘䈏਄᣹䈜䉎䋮

600
500

Non-grooved

400 T=950ºC
300 900ºC
200

As-received

850ºC

100
0BottomcornerFlangecornerFlangeportion1020304050
60
Distance from center x /mm
Fig. 16㩷 ዪㇱ䉻䉟䉪䉣䊮䉼䊊䉾䊃ᦛ䈕ᚑᒻ૕䈱㐳ᚻᣇะ⎬䈘ಽᏓ
3.3㩷 䊐䊤䊮䉳ㇱ䈱὾౉䉏䉕㒐ᱛ䈚䈢䊊䉾䊃ᦛ䈕ടᎿ㩷 䊊䉾䊃ᦛ䈕ᚑᒻ૕䈱䊐䊤䊮䉳ㇱ䈱὾౉䉏䉕㒐ᱛ䈘䈞䉎䈢䉄䈮䋬Fig. 17 䈮␜䈜䉋䈉䈮䊐䊤䊮䉳ㇱ䈫ធ⸅䈜䉎䉻䉟䉴䈫᧼᛼䈋䈮ᾲવዉ₸䈏ૐ䈇䉶䊤䊚䉾䉪䉴䈪䈅䉎䉴䊁䉝䉺䉟䊃᧼䉕↪䈇䈢䋮䊐䊤䊮䉳ㇱએᄖ䈱㊄ဳ䈲
SKD61 䈪䈅䉎䋮SKD61 䈱ᾲવዉ₸䈲 25W/m䍃K 䈪䈅䉎䈏䋬䉴䊁䉝䉺䉟䊃䈲 2W/m䍃K 䈪䈅䉎䋮ടᾲ᷷ᐲ
T=900ºC䋬଻ᜬᤨ㑆 t=3.5s 䈪ᦛ䈕ടᎿ䉕ⴕ䈦䈢䋮㩷 䊐䊤䊮䉳ㇱ䈮䉴䊁䉝䉺䉟䊃䉕↪䈇䈢Ḵઃ䈐㊄ဳ䈪ዪㇱ䉻䉟䉪䉣䊮䉼䊊䉾䊃ᦛ䈕ᚑᒻ૕䈱㐳ᚻᣇะ⎬䈘ಽᏓ䉕 Fig. 18 䈮␜䈜䋮䊐䊤䊮䉳ㇱ䈏 SKD61 䈱⚿ᨐ䈫Ყ䈼䈩䋬ធ⸅ㇱ䈮䉴䊁䉝䉺䉟䊃䉕↪䈇䉎䈖䈫䈮䉋䈦䈩䊐䊤䊮䉳ㇱ䈱⎬䈘䈱਄᣹䈏㒐ᱛ䈘䉏䋬ᐩⷺㇱ䈫䊐䊤䊮䉳ⷺㇱ䈲ᒁᒛᒝ䈘 1.5GPa ⒟ᐲ䈮䈭䉍䋬䈠䉏એᄖ䈲ૐᒝᐲ䈪䈅䉎ᚑᒻຠ䈏ᓧ䉌䉏䈢䋮㧙㧙

Sheetholder
Steatite
plateElectrode

Sheet
InsulatorDieVickers hardness /HV20Punch

600
SKD61

500
400
300

As-received

200

Bottomcorner100
010FlangecornerSteatite
Flangeportion

20
30
40
50
Distance from center x /mm60

Fig. 17㩷 䉴䊁䉝䉺䉟䊃᧼䉕↪䈇䈢䊊䉾䊃ᦛ䈕ടᎿ㩷 㩷 㩷 㩷 Fig. 18㩷 䉴䊁䉝䉺䉟䊃᧼䉕↪䈇䈢ዪㇱ䉻䉟䉪䉣䊮䉼㩷 㩷 ⵝ⟎㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 䊊䉾䊃ᦛ䈕ᚑᒻ૕䈱㐳ᚻᣇะ⎬䈘ಽᏓ

30
20
10Maximum punching load /kN

Maximum punching load /kN㩷 䊊䉾䊃ᦛ䈕ᚑᒻ૕䈱ᐩㇱ䈫䊐䊤䊮䉳ㇱ䈮⋥ᓘ 10mm 䈱ⓣᛮ䈐ടᎿ䉕ⴕ䈇䋬᷹ቯ䈘䉏䈢ᦨᄢⓣᛮ䈐⩄㊀䉕
Fig. 19 䈮␜䈜䋮䊐䊤䊮䉳ㇱ䈮䉴䊁䉝䉺䉟䊃䉕↪䈇䈢Ḵઃ䈐㊄ဳ䈪䈲䋬ᐩㇱ䈫䊐䊤䊮䉳ㇱ䈱ᦨᄢⓣᛮ䈐⩄㊀䈲ో૕䉕὾౉䉏䈘䉏䈢䉅䈱䈱ඨಽ⒟ᐲ䈪䈅䉍䋬⚛᧼䈫ห⒟ᐲ䈪䈅䉍䋬䊃䊥䊚䊮䉫䉇ⓣᛮ䈐ടᎿ䈭䈬䈱ᓟടᎿ䈏ኈᤃ䈮䈭䈦䈢䋮
㩷
40
40
30
20
100
0
As-received Non-grooved Grooved Steatite
As-received Non-grooved Grooved㩷 㩷 (a) Bottom portion(b) Flange portion
Fig. 19 䊊䉾䊃ᦛ䈕ᚑᒻ૕䈱ᦨᄢⓣᛮ䈐⩄㊀

Steatite㩷
4.㩷 ᷷䊶ᾲ㑆䉴䊒䊤䉟䊮ᚑᒻ䉴䊒䊤䉟䊮ᚑᒻ䈪䈲䋬౞╴ኈེ䈱஥ო䈮ᱤᒻ䉕ઃ䈔䉎䈏䋬ᚑᒻ䈏䈐䈶䈚䈇䈢䉄㜞ᒛജ㍑᧼䉕ㆡ↪䈜䉎䈖䈫䈲࿎㔍䈪䈅䉎䋮㜞ᒛജ㍑᧼䈱ᄌᒻᛶ᛫䉕ᷫዋ䈘䈞䉎䈢䉄䋬౞╴ኈེ䉕ടᾲ䈚䈩᷷䊶ᾲ㑆ᚑᒻ䉕ⴕ䈉䈖䈫䈏⠨䈋䉌䉏䉎䈏䋬㜞᷷Ἱ䈮䉋䈦䈩ኈེో૕䉕ടᾲ䈜䉎䈫䋬૛ಽ䈭ടᾲ䋬⴫㕙㉄ൻ䋬㐳䈇ടᾲᤨ㑆䋬ૐ䈇ടᾲല₸䈭䈬䈏໧㗴䈫䈭䉎䋮ㅢ㔚ടᾲ䈲㊄ዻ⚛᧚䈮ㅢ㔚䈚䈩䉳䊠䊷䊦ᾲ䈮䉋䈦䈩ടᾲ䈜䉎䉅䈱䈪䈅䉍䋬㎊ㅧടᎿ䈮䈍䈇䈩⚛᧚䈱ടᾲ䈮ㆡ↪䈘䉏䈩䈇䉎䋮䈚䈎䈚䈭䈏䉌䋬ෘ䈘䈏ዊ䈘䈇᧼᧚䈪䈲ᕆㅦ䈮᷷ᐲ䈏ૐਅ䈜䉎䈢䉄䋬ታ㓙䈱᧼ᚑᒻ䈮䈲䉁䈣ㆡ↪䈘䉏䈩䈇䈭䈇䋮䉁䈢䋬Fig. 20 䈮␜䈜䉋䈉䈮䋬᧼᧚䉕ో૕⊛䈮ടᾲ䈜䉎䈢䉄䈮䈲ਔ┵䈎䉌ㅢ㔚䈜䉎䈏䋬⍱ᒻએᄖ䈱᧼᧚䈪䈲ᢿ㕙Ⓧ䈏ᄌൻ䈚䈩᷷ᐲಽᏓ䈏ਇဋ৻䈮䈭䉎䋮บᒻ᧼᧚䈪䈲䋬⁜䈇ㇱಽ䈏ᢿ㕙Ⓧ䈲ዊ䈘䈒᷷ᐲ䈏㜞䈒䈭䉎䈏䋬ᐢ䈇ㇱಽ䈪䈲ૐ䈒䈭䉍䋬᧼ᚑᒻ䈪䈲⍱ᒻ᧚䈮ㆡ↪䈏㒢ቯ䈘䉏䉎䋮䈚䈎䈚䈭䈏䉌䋬䉴䊒䊤䉟䊮ᚑᒻ䈪䈲౞╴ኈེ䈱஥ო䈣䈔䈱ടᾲ䈏ᔅⷐ䈪䈅䉍䋬౞╴ኈེ䉕਄ਅ䈱㔚ᭂ䈪䈲䈘䉃䈫஥ო䈏ㅢ㔚䈘䉏䉎䈏䋬஥ო䈱⡺ෘ䈏ဋ৻䈪䈅䉎䈫ᢿ㕙Ⓧ䈏㜞䈘ᣇะ䈮৻ቯ䈮䈭䈦䈩ဋ৻䈭᷷ᐲಽᏓ䈏ᓧ䉌䉏䉎䋮౞╴ኈེ䈲᧼᧚䉕ᷓ⛉䉍ടᎿᓟ䋬䈚䈗䈐ടᎿ䉕ⴕ䈦䈩஥ო䈱⡺ෘ䉕ဋ৻䈮䈜䉎ᔅⷐ䈏䈅䉎䋮ㅢ㔚ടᾲ䈚䈢ኈེ஥ო䈏䉴䊒䊤䉟䊮ᚑᒻ䈪䈐䉎䈎䉕⹜㛎⊛䈮⺞䈼䈢䋮䉴䊒䊤䉟䊮ᚑᒻ䈮↪䈇䈢䊌䊮䉼䋬䉻䉟䉴䉕 Fig. 21 䈮␜䈜䋮䋴ᧄ䈱ᱤᒻᒻ⁁䈱䉴䊒䊤䉟䊮Ḵ䉕౞╴ኈེ䈮ઃ䈔䉎ടᎿ䉕ⴕ䈦䈢䋮䊌䊮䉼䈫䉻䉟䉴䈱᧚⾰䈲 SKD62 䈪䈅䉍䋬䊌䊮䉼䈲ᚑᒻᓟ䈮ᾲ෼❗䈚䈢ኈེ䉕ข䉍಴䈞䉎䉋䈉䈮䈜䉎䈢䉄䋬4 ಽഀ᭴ㅧ䈪䈅䉎䋮㧙㧙

R1

I35.4
I28.5

R2

R1

I33.0

Uniform

HighLow

Electrode
Uniform
Electrode(a) Rectangle sheet (b) Trapezoid sheet

Lower

Lower(c) Cup      (a) Punch 㩷80Electrode

100Electrode

UpperUpper(b) DieFig. 20 ㊄ዻ᧼ߩㅢ㔚ടᾲ㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 Fig. 21㩷 䉴䊒䊤䉟䊮ᚑᒻ䈮↪䈇䈢䊌䊮䉼䋬䉻䉟䉴᷷䊶ᾲ㑆䉴䊒䊤䉟䊮ᚑᒻ䈱ᚻ㗅䉕 Fig. 22 䈮␜䈜䋮ㅢ㔚ടᾲቢੌ⋥ᓟ䈮 2 ಽഀ䈚䈢਄㔚ᭂ䈲ᮮ䈮ਅ㔚ᭂ㑆䈲ਅ䈮䈠䉏䈡䉏ᓙㆱ䈚䋬䉰䊷䊗䊒䊧䉴䈏૞േ䈚䉻䉟䉴䈏ਅ㒠䈚䈩䉴䊒䊤䉟䊮ᚑᒻ䉕ⴕ䈉䋮ടᾲᓟኈེ䈱᷷ᐲૐਅ䉕㒐ᱛ䈜䉎䈢䉄䈮䋬䉰䊷䊗䊒䊧䉴䈱ᦨ㜞ㅦᐲ䈪䈅䉎 150mm䍃s-1 䈪ᚑᒻ䉕ⴕ䈇䋬㌃▗䉕 4 ᨎ㊀䈰䈩౞▤┵ㇱ䈫㌃㔚ᭂ䈱㑆䈮䈲䈘䉖䈣䋮䉴䊒䊤䉟䊮ᚑᒻ䈘䉏䈢ኈེ䉕 Fig. 23 䈮␜䈜䋮ᱤᒻᒻ⁁䈏ኈེ஥ო䈮ઃ䈔䉌䉏䈩䈍䉍䋬ㅢ㔚ടᾲ䈎䉌ᚑᒻ䉁䈪䈱ㅪ⛯䈚䈢ടᎿ䉕ⴕ䈉䈖䈫䈏䈪䈐䈢䋮

Slide
Upper electrode
Lower electrodePunch

DieCupAir cylinderBolster(a) Resistance heating(b) Release of electrodes(c) Spline forming(d) End of forming㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 Fig. 22㩷 ᷷䊶ᾲ㑆䉴䊒䊤䉟䊮ᚑᒻ䈱ᚻ㗅㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 Fig. 23 䉴䊒䊤䉟䊮ᚑᒻ䈘䉏䈢ኈེ5.㩷 ⚿㩷 ⸒⿥㜞ᒛജ㍑᧼䈱ᣂ䈚䈇᷷䊶ᾲ㑆䊒䊧䉴ᚑᒻᴺ䉕㐿⊒䈚䈢䋮䉁䈝䋬㜞᷷Ἱ䉕↪䈇䈢ᾲ㑆䊒䊧䉴ᚑᒻ䈮䈍䈇䈩䋬䉻䉟䉪䉣䊮䉼↪㍑᧼䈮䊒䊧䉮䊷䊃䉴䉬䊷䊦ᛥ೙೷䉕ႣᏓ䈜䉎䈖䈫䈮䉋䈦䈩⴫㕙㉄ൻ䉕ૐᷫ䈚䈢䋮䈧䈑䈮䋬㊄ဳ䈮Ḵ䉕ઃ䈔䈩ᚑᒻຠ䉕㊄ဳ䈫ዪㇱធ⸅䈘䈞䈩ዪㇱ䈣䈔䉕ᕆ಄䈜䉎ᾲ㑆䊒䊧䉴ᚑᒻᴺ䉕㐿⊒䈚䈩䋬ᒝᐲಽᏓ䉕᦭䈜⿥㜞ᒛജ㍑ᚑᒻຠ䉕⵾ㅧ䈚䈢䋮䈘䉌䈮䋬౞╴ኈེ஥ო䉕ㅢ㔚ടᾲ䈜䉎㜞ᒛജ㍑᧼䈱᷷䊶ᾲ㑆䉴䊒䊤䉟䊮ᚑᒻ䉕㐿⊒䈚䈢䋮㩷㧙㧙䈭䈍䋬 ᧄ⎇ⓥ䈲 JFE21 ਎♿⽷࿅䈱⎇ⓥഥᚑ䈮䉋䉎䉅䈱䈪䈅䉍䋬ᗵ⻢䈱ᗧ䉕⴫䈜䉎䋮ෳ㩷 ⠨㩷 ᢥ㩷 ₂1) ૒⮮┨ੳ䋺႟ᕈ䈫ടᎿ, 46-534 (2005), 548-551.
2) ᧖ጊ㓉ม䋺႟ᕈ䈫ടᎿ, 46-534 (2005), 552-555.
3) ዊ᎑໪㆐䋺႟ᕈ䈫ടᎿ, 46-534 (2005), 595-599.
4) Neugebauer, R., Altan, T., Geiger, M., Kleiner, M. & Sterzing, A.: CIRP Ann., 55-2 (2006), 793-816.
5) Mori, K., Maki, S. & Tanaka, Y.: CIRP Ann., 54-1 (2005),㩷 209-212
6) ᫪⻞৻㇢䊶’ᷡੑ㇢䊶ᢧ⮮⠍৻䊶ጯᧄା䊶ᨋ㆐ᔒ䊶ᅏ᧛ବᒾ䋺႟ᕈ䈫ടᎿ䋬48-555 (2007), 318-322.
7) ᫪⻞৻㇢䊶દ⮮ᄢ੺䋺႟ᕈ䈫ടᎿ䋬50-577 (2009), 129-133.
8) ᫪⻞৻㇢䊶ᢧ⮮⠍৻䊶’ᷡੑ㇢䊶ጯᧄା䊶ᨋ㆐ᔒ䊶ᅏ᧛ବᒾ䋺႟ᕈ䈫ടᎿ䋬49-564 (2008), 56-60.
9) ਛ㊁㓉ᔒ䊶⧃ේ๺ᄦ䊶⍹᳗ାⴕ䊶੗᧛㓉ᤘ䊶ᄖጊᵏᴦ䋺႟ᕈ䈫ടᎿ, 47-551 (2006), 1146-1150.

㧙㧙