API 5Lphaephe ea tšepe ea phaephe
Sehlopha sa tšepe: L360 kapa X52 (PSL1)
Litlhoko tsa ho hlophisoa ha lik'hemik'hale:
C: ≤0.28 (e se nang sekoli) ≤0.26 (e tjheselleditsweng)
Mn: ≤1.40
P: ≤0.030
S: ≤0.030
Cu: 0.50 kapa ka tlase
Na: ≤0.50
Cr: ≤0.50
Khoeli: ≤0.15
*V+Nb+Ti: ≤0.15
* Dikahare tsa Manganese di ka eketsoa ka 0.05% bakeng sa phokotso e 'ngoe le e 'ngoe ea 0.01% ea dikahare tsa khabone, ho fihlela ho 1.65% e phahameng.
Litlhoko tsa thepa ea mechini:
Matla a tlhahiso: ≥360Mpa
Matla a ho thapolla: ≥460Mpa
Matla a ho thaepa a phala ea tšepe e thaepetsoeng: ≥460Mpa
Ho Lelefatsa: ≥1940* AXC0.2/4600.9, moo AXC e leng sebaka se sekametseng sa sampole ya ho thaepa.
Ho mamella phaephe ea tšepe ka bophara ba kantle:
| Bophara ba kantle D mm | Qetello ea bophara ba kantle mm | |
| Phaephe ea tšepe e se nang seamless | Phaephe ea tšepe e qhibilihisitsoeng | |
| < 60.3 | -0.8, +0.4 | |
| 60.3 D kapa ka tlase ho 168.3 kapa ka tlase ho moo | -0.4, +1.6 | |
| 168.3 < D≤610 | ±0.005D, empa boholo ba ±1.6 | |
| 610 < D≤1422 | + / - 2.0 | + / - 1.6 |
| > 1422 | Ka tumellano | |
Lebota botenya mamello of tšepe phaephe:
| Botenya ba lebota t mm | Mamello mm |
| Phaephe ea tšepe e se nang seamless | |
| 4.0 kapa ka tlase ho moo | +0.6, -0.5 |
| 4 < t < 25 | +0.150t, -0.125t |
| 25 kapa ho feta | +3.7 kapa +0.1t, ho sa tsotelehe hore na ke efe e kholoanyane -3.0 kapa -0.1t, nka e kholoanyane |
| Phaephe e tjheseditsweng | |
| 5.0 kapa ka tlase ho moo | + / - 0.5 | |
| 5.0 | Ho phaella kapa ho tlosa 0.1 t | |
| 15 | kapa ho feta | + / - 1.5 |
Tšepe sehlopha: L360N or X52N(PSL2)
Khemikhale sebopeho litlhoko:
C: ≤0.24
Si: ≤0.45
Mn: ≤1.40
P: ≤0.025
S: ≤0.015
V: ≤0.10
Nb:≤0.05
Tekanyo: ≤0.04
Cu: ≤0.50
Ni: ≤0.30
Cr: ≤0.30
Khoeli: ≤0.15
V+Nb+Ti: ≤0.15
* Dikahare tsa Manganese di ka eketsoa ka 0.05% bakeng sa phokotso e 'ngoe le e 'ngoe ea 0.01% ea dikahare tsa khabone, ho fihlela ho 1.65%.
* Ha ho dumellwe ho eketsa boron ka boomo, masalla a B≤0.001%
Khabone e lekanang:
CEP cm: ≤0.25
CEIIW: ≤0.43
* Sebelisa CE ha dikahare tsa khabone di feta 0.12%, mme o sebedise CE IIW ha dikahare tsa khabone di le ka tlase ho kapa di lekana le 0.12%.
CEP cm = C+Si/30+Mn/20+Cu/20+Ni/60+Cr/20+Mo/15+V/10+5B
Haeba sephetho sa tlhahlobo ea ho qhibilihisa ea B se le ka tlase ho 0.0005%, joale ha ho hlokahale hore ho kenyelletsoe tlhahlobo ea karolo ea B tlhahlobong ea sehlahisoa, 'me litaba tsa B li ka nkoa e le lefela palong ea CEP cm e lekanang le khabone.
CEIIW =C+Mn/6 (C+Mo+V)/5+(Ni+Cu)/ 15
Mekaniki thepa litlhoko:
Matla a tlhahiso: 360-530Mpa
Matla a ho thapolla: 460-760Mpa
Karolelano ea chai: ≤0.93 (e sebetsa feela ho phaephe ea tšepe ea D > 323.9mm)
Matla a ho thaepa a phala ea tšepe e thaepetsoeng: ≥460Mpa
Bolelele bo bonyane: = 1940* AXC0.2/4600.9, moo AXC e leng sebaka se tshekaletseng sa sampole ya ho thapolla.
Teko ea tšusumetso ea CVN ea tube
Mocheso oa teko 0 。C
| Hlalosa bophara ba kantle ba D mm | CVN e feletsengMatla a monyehilengKVJ |
| 508 kapa ka tlase ho moo | 27 |
| > 508 ho isa ho 762 | 27 |
| > 762 ho isa ho 914 | 40 |
| > 914 ho isa ho 1219 | 40 |
| > 1219 ho isa ho 1422 | 40 |
| > 1422 ho isa ho 2134 | 40 |
Kantle bophara mamello of tšepe phaephe:
| Bophara ba kantle D mm | Qetella ho kheloha ka ntle ho bophara | |
| Phaephe ea tšepe e se nang seamless | Phaephe ea tšepe e qhibilihisitsoeng | |
| < 60.3 | -0.4, +0.8 | |
| 60.3 D kapa ka tlase ho 168.3 kapa ka tlase ho moo | -0.4, +1.6 | |
| 168.3 < D=610 | ±0.005D, empa boholo ba ±1.6 | |
| 610 < D=1422 | + / - 2.0 | + / - 1.6 |
| > 1422 | Ka tumellano | |
Lebota botenya mamello of tšepe phaephe:
| Botenya ba lebota t mm | Mamello |
| Phaephe ea tšepe e se nang seamless | |
| 4.0 kapa ka tlase ho moo | +0.6, -0.5 |
| 4 < t < 25 | +0.150t, -0.125t |
| 25 kapa ho feta | +3.7 kapa +0.1t, ho sa tsotelehe hore na ke efe e kholoanyane -3.0 kapa -0.1t, nka e kholoanyane |
| Phaephe e tjheseditsweng | |
| 5.0 kapa ka tlase ho moo | + / - 0.5 |
| 5.0 < t < 15 | Ho phaella kapa ho tlosa 0.1 t |
| Lilemo tse 15 kapa ho feta | + / - 1.5 |
Nako ea poso: Loetse-26-2023
