Abstract
The fine piercing process under the nearly zero-clearance die-punch set-up was proposed as a non-traditional process with use of the plasma-nitrided SKD11 punch - die pair. With use of the high density plasma nitriding system, the SKD11 punch was nitrided to have the surface hardness up to 1600 HV. The annealed SKD11 die-substrate was shaved into a core die by accurately piercing the diamond-coated and the nitrided punches, respectively. After shaping and plasma-nitriding the shaved core die, both the punch and core-die was placed into the cassette die set for piercing experiments under the nearly-zero clearance. The electromagnetic steel sheets with the thickness of 0.5 mm were prepared to describe the shearing behavior in piercing. The piercing load and stroke histories were traced with increasing the number of shots. The engineering durability was also discussed with comments on the wear of punch and die. The brittle electromagnetic sheets were accurately blanked with the burr height ratio by 10% and the burnished surface area ratio by 70% when using the diamond-coated punch. Fine piercing process with less heights and fractured surface area ratio in dry was put into practice by using the plasma nitrided punch and die-core set with rational compliance under nearly zero clearance.
| Original language | English |
|---|---|
| Pages (from-to) | 1459-1466 |
| Number of pages | 8 |
| Journal | Procedia Manufacturing |
| Volume | 15 |
| DOIs | |
| Publication status | Published - 2018 Jan 1 |
| Event | 17th International Conference on Metal Forming, METAL FORMING 2018 - Toyohashi, Japan Duration: 2018 Sep 16 → 2018 Sep 19 |
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Keywords
- Diamond tools
- Electromagnetic steel sheet
- Fine piercing
- Nearly zero clearance
- Plasma nitrided tools
ASJC Scopus subject areas
- Industrial and Manufacturing Engineering
- Artificial Intelligence
Cite this
Fine piercing of electromagnetic steel sheets by micro-punches under nearly zero clearance. / Katsuta, Etsuro; Aizawa, Tatsuhiko; Morita, Hiroshi; Dohda, Kuniaki; Anzai, Masahiro.
In: Procedia Manufacturing, Vol. 15, 01.01.2018, p. 1459-1466.Research output: Contribution to journal › Conference article
}
TY - JOUR
T1 - Fine piercing of electromagnetic steel sheets by micro-punches under nearly zero clearance
AU - Katsuta, Etsuro
AU - Aizawa, Tatsuhiko
AU - Morita, Hiroshi
AU - Dohda, Kuniaki
AU - Anzai, Masahiro
PY - 2018/1/1
Y1 - 2018/1/1
N2 - The fine piercing process under the nearly zero-clearance die-punch set-up was proposed as a non-traditional process with use of the plasma-nitrided SKD11 punch - die pair. With use of the high density plasma nitriding system, the SKD11 punch was nitrided to have the surface hardness up to 1600 HV. The annealed SKD11 die-substrate was shaved into a core die by accurately piercing the diamond-coated and the nitrided punches, respectively. After shaping and plasma-nitriding the shaved core die, both the punch and core-die was placed into the cassette die set for piercing experiments under the nearly-zero clearance. The electromagnetic steel sheets with the thickness of 0.5 mm were prepared to describe the shearing behavior in piercing. The piercing load and stroke histories were traced with increasing the number of shots. The engineering durability was also discussed with comments on the wear of punch and die. The brittle electromagnetic sheets were accurately blanked with the burr height ratio by 10% and the burnished surface area ratio by 70% when using the diamond-coated punch. Fine piercing process with less heights and fractured surface area ratio in dry was put into practice by using the plasma nitrided punch and die-core set with rational compliance under nearly zero clearance.
AB - The fine piercing process under the nearly zero-clearance die-punch set-up was proposed as a non-traditional process with use of the plasma-nitrided SKD11 punch - die pair. With use of the high density plasma nitriding system, the SKD11 punch was nitrided to have the surface hardness up to 1600 HV. The annealed SKD11 die-substrate was shaved into a core die by accurately piercing the diamond-coated and the nitrided punches, respectively. After shaping and plasma-nitriding the shaved core die, both the punch and core-die was placed into the cassette die set for piercing experiments under the nearly-zero clearance. The electromagnetic steel sheets with the thickness of 0.5 mm were prepared to describe the shearing behavior in piercing. The piercing load and stroke histories were traced with increasing the number of shots. The engineering durability was also discussed with comments on the wear of punch and die. The brittle electromagnetic sheets were accurately blanked with the burr height ratio by 10% and the burnished surface area ratio by 70% when using the diamond-coated punch. Fine piercing process with less heights and fractured surface area ratio in dry was put into practice by using the plasma nitrided punch and die-core set with rational compliance under nearly zero clearance.
KW - Diamond tools
KW - Electromagnetic steel sheet
KW - Fine piercing
KW - Nearly zero clearance
KW - Plasma nitrided tools
UR - http://www.scopus.com/inward/record.url?scp=85063783410&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85063783410&partnerID=8YFLogxK
U2 - 10.1016/j.promfg.2018.07.334
DO - 10.1016/j.promfg.2018.07.334
M3 - Conference article
AN - SCOPUS:85063783410
VL - 15
SP - 1459
EP - 1466
JO - Procedia Manufacturing
JF - Procedia Manufacturing
SN - 2351-9789
ER -