ASTM A234 jẹ Sipesifikesonu Standard fun awọn ibamu paipu irin pẹlu erogba ati ohun elo irin alloy fun iwọntunwọnsi ati awọn iṣẹ iwọn otutu giga.O ni wiwa awọn ohun elo irin ti laisiyonu ati awọn iru welded.Awọn ohun elo paipu irin ni a lo ni awọn opo gigun ti titẹ ati ni awọn iṣelọpọ ọkọ oju omi titẹ.Awọn ohun elo imudọgba wọnyi ni irin ti a pa, awọn ayederu, awọn ifi, awọn awo, lainidi tabi HFW (asopọ welded) awọn ọja paipu, pẹlu irin kikun ti a fi kun.
Kini WPB?
W = WELDABLE / ṣe
P = JIMỌ SI P NOMBA TI ohun elo alloy
B = Tọkasi si Kekere TI ohun elo
Wọn wa ni atunyẹwo tuntun ti ASME B16.9, B16.11, MSS-SP-79, MSS-SP-83, MSS-SP-95, ati MSS-SP-97.Paapaa lilo pupọ ni fifin titẹ ati ni iṣelọpọ ọkọ oju-omi titẹ fun iṣẹ ni iwọntunwọnsi ati awọn iwọn otutu ti o ga.Awọn onipò naa jẹ ASTM A234 WPB, WPC, WP5, WP9, WP91, WP11, WP12 ati WP22.
Awọn pato:
Awọn ajohunše: ANSI / ASME B16.9, B16.28, MSS-SP-43.
Ibi Iwọn Iwọn Ita: 1/2" si 48"
Ibiti Sisanra: SCH 10, sch 20, SCH 40, SCH STD, SCH 80, SCH XS, SCH 160, SCH XXS ati be be lo.
Awọn iru ẹrọ paipu irin ni ayederu, asapo, apọju weld, ati laisiyonu.
Iṣọkan Kemikali (%) ti ASTM A234
| Ipele | C | Mn | P | S | Si | Cr | Mo | Ni | Cu | V | Nb |
| WPB | 0.3 | 0.29-1.06 | 0.05 | 0.058 | 0.1 iṣẹju | 0.4 | 0.15 | 0.4 | 0.4 | 0.08 | 0.02 |
| WPC | 0.35 | 0.29-1.06 | 0.05 | 0.058 | 0.1 iṣẹju | 0.4 | 0.15 | 0.4 | 0.4 | 0.08 | 0.02 |
| WP11 CL1 | 0.05-0.15 | 0.30-0.60 | 0.03 | 0.03 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 | - | - | - | - |
| WP11 CL2/3 | 0.05-0.20 | 0.30-0.80 | 0.04 | 0.04 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 | - | - | - | - |
Awọn ohun-ini ẹrọ ti ASTM A234
| Awọn ibeere fifẹ | WPB | WPC, WP11CL2 | WP11CL1 | WP11CL3 |
| Agbara Fifẹ, min, ksi[MPa] | 60-85 | 70-95 | 60-85 | 75-100 |
| (0.2% aiṣedeede tabi 0.5% itẹsiwaju-labẹ fifuye) | [415-585] | [485-655] | [415-585] | [520-690] |
| Agbara ikore, min, ksi[MPa] | 32 | 40 | 30 | 45 |
| [240] | [275] | [205] | [310] |
A234 WPB deede
| Paipu | Awọn ohun elo | Flanges | Awọn falifu | Boluti & Eso |
| ASTM A106 Gr A | ASTM A234 Gr WPA | ASTM A105 | ASTM A216 Gr WCB | A193 Gr B7 A194 Gr 2H |
| ASTM A106 Gr B | A234 Gr WPB | ASTM A105 | ASTM A216 Gr WCB | |
| ASTM A106 Gr C | ASTM A234 Gr WPC | ASTM A105 | ASTM A216 Gr WCB |
(1) Apapọ Cu, Ni, Cr, ati Mo ko gbọdọ kọja 1.00%.
(2) Apapọ Cr ati Mo ko gbọdọ kọja 0.32%.
(3) Fun idinku kọọkan ti 0.01% ni isalẹ C max., Ilọsiwaju ti 0.06% Mn (4) loke iwọn ti a ti sọ.yoo gba laaye, to kan max.ti 1.35%.
(5) Iwọn ti o pọju.erogba deede (CE) yoo jẹ 0.50, ti o da lori itupalẹ ooru ati (6) agbekalẹ CE=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15.
Iyatọ Laarin A105 Ati A234
ASTM A234 WPB Pipe Fittings jẹ ti irin erogba ti a ṣe ti wọn lagbara pupọ ati pe o le lo ni awọn ibeere agbara giga.ASTM A234 WPB jẹ itọju ooru ati lẹhinna gba ọ laaye lati tutu ni iyara.
Erogba Irin Awọn ohun elo ti a dapọ jẹ awọn ohun elo paipu ti a ṣe lati inu Ohun elo A105.Awọn wọnyi ni a ṣe ni annealed, deede, deede ati iwọn otutu tabi parun ati awọn ipo iwọn otutu.
Akoko ifiweranṣẹ: Oṣu Kẹwa 08-2021