Bukatun Sinadaran da ake buƙata，%，
C: ≤0.30
Mn: 0.29-1.06
P: ≤0.025
S: ≤0.025
Si: ≥0.10
Ni: ≤0.40
Cr: ≤0.30
Cu: ≤0.40
V: ≤0.08
Lambar lamba: ≤0.02
Wata: ≤0.12
*Ana iya ƙara yawan sinadarin manganese da kashi 0.05% ga kowace raguwar kashi 0.01% na sinadarin carbon har zuwa kashi 1.35%.
**Ana iya ƙara yawan sinadarin Niobium zuwa 0.05% don nazarin narkewa da kuma 0.06% don nazarin samfurin da aka gama.
Bukatun maganin zafi:
1. Daidaita yanayin zafi sama da 815°C.
2. A daidaita zafin da ke sama da 815°C, sannan a rage zafi.
3. Zafi ya yi tsakanin 845 zuwa 945°C, sannan a sanyaya a cikin tanda sama da 845°C (don bututun da ba su da sumul kawai).
4. An yi masa injina sannan a rage zafi kamar yadda aka bayyana a sama a Mataki na 3.
5. An taurare sannan aka rage zafi sama da 815°C.
Bukatun aikin injiniya:
Ƙarfin samarwa: ≥240Mpa
Ƙarfin tensile: ≥415Mpa
Ƙarawa:
| Samfuri | A333 GR.6 | |
| Tsaye | Mai wucewa | |
| Mafi ƙarancin ƙimar da'ira ta yau da kullunsamfurin ko ƙaramin samfurin sikelin tare da nisan alama na 4D | 22 | 12 |
| Samfuran murabba'i masu kauri na bango na inci 5/16 (7.94 mm) ko fiye, da kuma duk ƙananan samfuran da aka gwada a cikicikakken giciye a inci 2 (mm 50)alamomi | 30 | 16.5 |
| Samfuran murabba'i har zuwa inci 5/16 (7.94 mm) kauri bango a inci 2 (50 mm) nisan alama (faɗin samfurin 1/2 inci, 12.7 mm) | A | A |
A Ba da damar rage tsawon tsayi da kashi 1.5% da kuma rage tsawon tsayi da kashi 1.0% ga kowane kauri na 1/32 inci (0.79 mm) har zuwa inci 5/16 (7.94 mm) daga ƙimar tsawaita da aka lissafa a sama.
Gwajin Tasiri
Zafin Gwaji: -45°C
Lokacin da aka yi amfani da ƙananan samfuran tasirin Charpy kuma faɗin ƙimar samfurin ya ƙasa da kashi 80% na ainihin kauri na kayan, ya kamata a yi amfani da ƙaramin zafin gwajin tasiri kamar yadda aka ƙididdige a cikin Tebur 6 na ƙayyadaddun ASTM A333.
| Samfura, mm | Matsakaicin matsakaicin samfura uku | Mafi ƙarancin ƙimar akane of samfuran uku |
| 10 × 10 | 18 | 14 |
| 10 × 7.5 | 14 | 11 |
| 10 × 6.67 | 12 | 9 |
| 10 × 5 | 9 | 7 |
| 10 × 3.33 | 7 | 4 |
| 10 × 2.5 | 5 | 4 |
Ya kamata a gwada bututun ƙarfe ta hanyar hydrostatic ko kuma ba ta hanyar lalata su ba (eddy current ko ultrasonic) a kan reshe-reshe.
Juriyar diamita na waje na bututun ƙarfe:
| Diamita na waje, mm | haƙuri mai kyau, mm | haƙuri mara kyau, mm |
| 10.3-48.3 | 0.4 | 0.4 |
| 48.3＜D≤114.3 | 0.8 | 0.8 |
| 114.3＜D≤219.10 | 1.6 | 0.8 |
| 219.1＜D≤457.2 | 2.4 | 0.8 |
| 457.2＜D≤660 | 3.2 | 0.8 |
| 660＜D≤864 | 4.0 | 0.8 |
| 864＜D≤1219 | 4.8 | 0.8 |
Juriyar kauri na bututun ƙarfe:
Duk wani maki ba zai zama ƙasa da kashi 12.5% na kauri na bango ba. Idan an tsara mafi ƙarancin kauri na bango, babu wani maki da zai zama ƙasa da kauri na bango da ake buƙata.
Lokacin Saƙo: Fabrairu-22-2024