API 5Lbututun ƙarfe bututu
Karfe mai daraja: L360 ko X52 (PSL1)
Bukatun sinadaran abun da ke ciki:
C: ≤0.28 (marar sumul) ≤0.26 (an haɗa shi da walda)
Mn: ≤1.40
P: ≤0.030
S: ≤0.030
Cu: 0.50 ko ƙasa da haka
Ni: ≤0.50
Cr: ≤0.50
Wata: ≤0.15
*V+Nb+Ti: ≤0.15
* Ana iya ƙara yawan sinadarin Manganese da kashi 0.05% ga kowace raguwar sinadarin carbon da kashi 0.01%, har zuwa matsakaicin kashi 1.65%.
Bukatun kadarori na inji:
Ƙarfin samarwa: ≥360Mpa
Ƙarfin tensile: ≥460Mpa
Ƙarfin tensile na bututun ƙarfe mai walda: ≥460Mpa
Tsawaita: ≥1940* AXC0.2/4600.9 , inda AXC shine yankin giciye na samfurin tensile
Juriyar bututun ƙarfe ta waje:
| Diamita na waje D mm | Karshen diamita na waje karkacewa mm | |
| bututun ƙarfe mara sumul | Bututun ƙarfe mai walda | |
| < 60.3 | -0.8, +0.4 | |
| 60.3 D ko ƙasa da haka 168.3 ko ƙasa da haka | -0.4, +1.6 | |
| 168.3 < D≤610 | ±0.005D, amma matsakaicin ±1.6 | |
| 610 < D≤1422 | + / - 2.0 | + / - 1.6 |
| > 1422 | Ta hanyar yarjejeniya | |
Bango kauri haƙuri of ƙarfe bututu:
| Kauri na bango t mm | Juriya mm |
| bututun ƙarfe mara sumul | |
| 4.0 ko ƙasa da haka | +0.6, -0.5 |
| 4 < t < 25 | +0.150t, -0.125t |
| 25 ko sama da haka | +3.7 ko +0.1t, duk wanda ya fi girma -3.0 ko -0.1t, ya fi girma |
| Bututun da aka haɗa | |
| 5.0 ko ƙasa da haka | + / - 0.5 | |
| 5.0 | < t < 15 | Ƙari ko ƙasa da 0.1 t |
| 15 | ko fiye | + / - 1.5 |
Karfe maki: L360N or X52N(PSL2)
Sinadaran sinadarai abun da ke ciki buƙatun:
C: ≤0.24
Si: ≤0.45
Mn: ≤1.40
P: ≤0.025
S: ≤0.015
V: ≤0.10
Ga alama:≤0.05
Ti: ≤0.04
Cu: ≤0.50
Ni: ≤0.30
Cr: ≤0.30
Wata: ≤0.15
V+Nb+Ti: ≤0.15
* Ana iya ƙara yawan sinadarin Manganese da kashi 0.05% ga kowace raguwar sinadarin carbon da kashi 0.01%, har zuwa matsakaicin kashi 1.65%.
* Ba a yarda da ƙara boron da gangan ba, ragowar B≤0.001%
Carbon daidai:
CEP cm: ≤0.25
CEIIW : ≤0.43
* Yi amfani da CE idan sinadarin carbon ya fi 0.12%, kuma yi amfani da CE IIW lokacin da sinadarin carbon ya fi P cm ƙasa da ko daidai yake da 0.12%.
CEP cm = C+Si/30+Mn/20+Cu/20+Ni/60+Cr/20+Mo/15+V/10+5B
Idan sakamakon nazarin narkewar B ya ƙasa da 0.0005%, to babu buƙatar haɗa nazarin sinadarin B a cikin nazarin samfurin, kuma za a iya ɗaukar abun cikin B a matsayin sifili a cikin lissafin CEP cm mai daidai da carbon.
CEIIW =C+Mn/6 (C+Mo+V)/5+(Ni+Cu)/ 15
Injiniyanci kadarori buƙatun:
Ƙarfin samarwa: 360-530Mpa
Ƙarfin tensile: 460-760Mpa
Rabon yawan amfanin ƙasa: ≤0.93 (ya shafi bututun ƙarfe na D > 323.9mm kawai)
Ƙarfin tensile na bututun ƙarfe mai walda: ≥460Mpa
Mafi ƙarancin tsawo: = 1940* AXC0.2/4600.9, inda AXC shine yankin giciye na samfurin tensile.
Gwajin tasirin CVN na bututu
Zafin gwaji 0.C
| A saka diamita na waje na D mm | Cikakken CVNMakamashin da ya shaKVJ |
| 508 ko ƙasa da haka | 27 |
| > 508 zuwa 762 | 27 |
| > 762 zuwa 914 | 40 |
| > 914 zuwa 1219 | 40 |
| > 1219 zuwa 1422 | 40 |
| > 1422 zuwa 2134 | 40 |
Waje diamita haƙuri of ƙarfe bututu:
| Diamita na waje D mm | Karshen karkacewar diamita ta waje | |
| bututun ƙarfe mara sumul | Bututun ƙarfe mai walda | |
| < 60.3 | -0.4, +0.8 | |
| 60.3 D ko ƙasa da haka 168.3 ko ƙasa da haka | -0.4, +1.6 | |
| 168.3 < D=610 | ±0.005D, amma matsakaicin ±1.6 | |
| 610 < D=1422 | + / - 2.0 | + / - 1.6 |
| > 1422 | Ta hanyar yarjejeniya | |
Bango kauri haƙuri of ƙarfe bututu:
| Kauri na bango t mm | Juriya |
| bututun ƙarfe mara sumul | |
| 4.0 ko ƙasa da haka | +0.6, -0.5 |
| 4 < t < 25 | +0.150t, -0.125t |
| 25 ko sama da haka | +3.7 ko +0.1t, duk wanda ya fi girma -3.0 ko -0.1t, ɗauki mafi girma |
| Bututun da aka haɗa | |
| 5.0 ko ƙasa da haka | + / - 0.5 |
| 5.0 < t < 15 | Ƙari ko ƙasa da 0.1 t |
| 15 ko fiye | + / - 1.5 |
Lokacin Saƙo: Satumba-26-2023
