Abubuwan da ke tattare da keɓantarwa,%,
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
Nb: ≤0.02
Mo: ≤0.12
* Ana iya ƙara abun ciki na manganese ta 0.05% na kowane 0.01% raguwa a cikin abubuwan carbon har zuwa 1.35%.
** Abun ciki na ciki, dangane da yarjejeniya, zai iya ƙaruwa har zuwa 0.05% don narke na narkewa da 0.06% na bincike na samfuri.
Bukatun lafiya na lafiya:
1. Kirkiro sama da 815 ° C.
2. Kirkiro sama da 815 ° C, to zafin.
3. Haske da aka kirkira tsakanin 845 da 945 ° C, to, sanyaya a cikin wuta sama da 845 ° C (don shambo mara kyau kawai).
4.
5. Hardenened sannan a sama sama 815 ° C.
Abubuwan da ake buƙata na injiniya:
Yawan aiki: ≥240psa
Tenget ƙarfi: ≥415psa
Elongation:
| Samfuri | A333 Gr.6 | |
| Na daga ƙasa zuwa sama | M | |
| Mafi karancin darajar madaidaicin madauwarimisali ko karamin sikelin sikelin tare da nisan alama na 4d | 22 | 12 |
| Samfurori na rectangular tare da kauri na bango na 5/16 a. (7.94 mm) da kuma duk ƙananan samfurori sun gwada a cikicikakken giciye-sashi a 2 in. (50 mm)alama | 30 | 16.5 |
| Misalin mahimman samfuran har zuwa 5/16 a cikin. (7.94 mm) kauri bangon bango a 2 in. (200.7 mm) | A | A |
A ba da izinin rage 1.5% a cikin elongation na tsawon 1.0% a cikin elongation na kowane 1/32 a. (7.79 mm) na bangon bango har zuwa 5/164 mm) daga.
Tasirin sakamako
TATTAUNAWAR gwaji: -45 ° C
Lokacin da ake amfani da karamin tasirin ingancin salula da samfuran samfuri ƙasa ƙasa da 80% na ainihin lokacin da aka lissafta a cikin Table 6 na Astm A333 bayani.
| Samfura, mm | Mafi karancin matsakaici na samfurori uku | M darajare of sune samfurori 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 |
M karfe ya kamata ya zama hydrostatically ko rashin lalacewa (Eddy na yanzu ko Ultrasonic) akan reshen--reshe.
Haƙuri na waje na diamita na bututun karfe:
| A waje na diamita, mm | Amincewa da haƙuri, mm | Haƙiƙa, mm |
| 10.3-48.3 | 0.4 | 0.4 |
| 48.3<DE114.3 | 0.8 | 0.8 |
| 114.3<DE219.10 | 1.6 | 0.8 |
| 219.1<DE457.2 | 2.4 | 0.8 |
| 457.2<DE660 | 3.2 | 0.8 |
| 660<DE864 | 4.0 | 0.8 |
| 864<DE1219 | 4.8 | 0.8 |
Gudanar da kauri na bututun karfe:
Duk wani aya ba zai zama ƙasa da 12.5% na kauri na katako ba. Idan an umurce mafi ƙarancin kauri, babu wani ma'ana zai zama ƙasa da kauri da ake buƙata.
Lokaci: Feb-22-2024