ASTM A192 / ASME SA-192 Boiler Tubes piav qhia
A192 steel yeeb nkab yog seamless carbon steel boiler raj tsim raws li American ASTM A192 tus qauv. Nws yog tsim tshwj xeeb rau boiler Cheebtsam nyob rau hauv siab - siab ib puag ncig, muaj zoo heev high - kub lub zog, uniform microstructure, thiab cov txheej txheem zoo adaptability. Hauv qab no yog cov lus qhia ntxaws:
Khoom siv: Feem ntau yog tsim los ntawm carbon steel, cov yeeb nkab steel tswj kev ua haujlwm ruaj khov ntawm qhov kub thiab txias los ntawm kev tswj cov tshuaj muaj pes tsawg leeg thiab cov txheej txheem kho cua sov. Nws cov ntsiab lus carbon thiab qhov sib piv ntawm lwm cov alloying ntsiab kom ntseeg tau qhov kev ntseeg tau thiab kav ntev ntawm cov yeeb nkab steel nyob rau hauv siab - kub thiab siab - siab.
Kev tsim khoom: Seamless steel kav yog tsim los siv cov txheej txheem xws li kub dov lossis kos duab txias. Kub dov txhim kho kev ua haujlwm ntau lawm thiab tsim nyog rau kev tsim khoom loj; Kev kos duab txias ntxiv txhim kho qhov tseeb qhov tseeb thiab qhov zoo ntawm cov yeeb nkab steel, ua tau raws li qhov xav tau ntawm cov ntawv thov nrog cov kev xav tau siab.
Chemical Composition Requirements
| Element | Cov ntsiab lus,% |
|---|---|
| C | 0.06~0.18 |
| Mn | 0.27~0.63 |
| P | Tsawg dua lossis sib npaug li 0.035 |
| S | Tsawg dua lossis sib npaug li 0.035 |
| Si | Tsawg dua lossis sib npaug li 0.25 |
* Tag nrho cov nqi yuav tsum yog raws li kev ntsuas kub.
Mechanical Properties
| Mechanical Property Requirements | |
|---|---|
| TS min Ksi [MPa] |
47 [325] |
| YS min Ksi [MPa] |
26 [180] |
| El. hauv 2" min,% |
35 |
| Brinell Hardness max. HBW |
137 |
| Rockwell Hardness, max. HRBW |
77 |
* TS: tensile zog; * YS: yield zog; * El.: elongation.
* Tus lej Brinell Hardness siv rau ASTM A192 raj 0.200 ″ [5.1 mm] thiab tshaj hauv phab ntsa tuab.
* Tus nab npawb Rockwell Hardness siv rau ASTM A192 raj tsawg dua 0.200 ″ [5.1 mm] hauv phab ntsa tuab.
* Cov khoom siv tshuab tsis siv rau cov raj me dua 1/8 ″ [3.2 mm] hauv txoj kab uas hla lossis 0.015 ″ [0.4 mm] thickness.
ASTM A192 Seamless raj Phab ntsa Thickness kam rau ua
| Seamless, Txias -Tiav Tubes | ||
| Sab nraud txoj kab uas hla Hauv. (mm) |
Phab ntsa thickness kam rau ua% | |
| Tshaj (+) | Hauv qab (-) | |
| 1 ½ (38.1) thiab qis dua | 20 | 0 |
| Tshaj 1½ (38.1) | 22 | 0 |
ASTM A192 Seamless Tube sab nraud txoj kab uas hla
| Txias -Tiav Seamless Tubes | ||
| Sab nraud txoj kab uas hla Hauv. (mm) |
Permissible Variations In. (mm) | |
| Tshaj (+) | Hauv qab (-) | |
| Hauv qab 1 (25.4) | 0.004 (0.1) | 0.004 (0.1) |
| 1 txog 1 ½ (25.4 txog 38.1), Incl | 0.006 (0.15) | 0.006 (0.15) |
| Tshaj 11⁄2 txog 2 [38.1 txog 50.8], Excl | 0.008 (0.2) | 0.008 (0.2) |
| 2 rau 21⁄2 [50.8 to 63.5], Excl | 0.010 (0.25) | 0.010 (0.25) |
| 21⁄2 rau 3 [63.5–76.2], Excl | 0.012 (0.3) | 0.012 (0.3) |
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