ASTM A335 P5, wanda kuma aka sani da ASME SA335 P5, bututun ƙarfe ne mara nauyi mara nauyi wanda aka tsara don sabis na zafin jiki.
P5 ya ƙunshi 4.00 ~ 6.00% chromium da 0.45 ~ 0.65% molybdenum, yana ba da kyakkyawan ƙarfi da aiki a ƙarƙashin yanayin zafi da matsa lamba. Ana amfani dashi sosai a cikin kayan aiki kamar tukunyar jirgi, superheaters, da masu musayar zafi.
Matsayinta na UNS shine K41545.
Mai ƙera da Sharadi
ASTM A335 P5 bututun karfe za a yi su ta hanyar tsari mara kyau kuma za su kasance ko dai sun gama zafi ko zana sanyi, kamar yadda aka ayyana.
Bututun da aka gama da zafi su ne bututun ƙarfe maras sumul da ake kera su daga billet ta hanyar dumama da jujjuya su, yayin da bututun sanyin bututun ƙarfe ne maras ɗaci da ake samarwa ta hanyar zana bututun da aka gama da zafi a ɗaki.
Idan kuna son ƙarin koyo game da hanyoyin kera na waɗannan nau'ikan bututun ƙarfe maras sumul, kuna iya danna"Mene ne Seamless Karfe Pipe?”don ƙarin bayani.
Maganin zafi
ASTM A335 P5 bututu za a mai da su don maganin zafi da zafi da aka yi amfani da sucikakken ko isothermal annealing or normalizing da tempering.
Ana nuna takamaiman buƙatun a cikin teburin da ke ƙasa:
| Daraja | Nau'in maganin zafi | Subcritical Annealing ko Zazzabi |
| ASTM A335 P5 | cikakken ko isothermal anneal | - |
| normalize da fushi | 1250 ℉ [675 ℃] min |
Ayyukan da suka haɗa da dumama bututun ƙarfe sama da yanayin zafinsu mai mahimmanci, kamar walda, walƙiya, da lankwasa mai zafi, yakamata a bi su ta hanyar maganin zafi mai dacewa.
Hanyoyin gwaji don abun da ke tattare da sinadarai da kaddarorin injina na bututun ƙarfe na P5 za su bi abubuwan da suka dace na ASTM A999.
| Daraja | Abun ciki, % | ||||||
| C | Mn | P | S | Si | Cr | Mo | |
| P5 | 0.15 max | 0.30 ~ 0.60 | 0.025 max | 0.025 max | 0.50 max | 4.00 ~ 6.00 | 0.45 ~ 0.65 |
Tensile Properties
| Daraja | Ƙarfin Ƙarfi | Ƙarfin Haɓaka | Tsawaitawa a cikin 2 in. ko 50 mm |
| P5 | 60 ksi [415 MPa] min | 30 ksi [205 MPa] min | 30% min |
Abubuwan Hardness
Matsayin ASTM A335 bai ƙayyadad da kowane buƙatun taurin bututun ƙarfe na P5 ba.
Gwajin Lalacewa
Za a gudanar da gwajin ƙwanƙwasa tare da yin samfuri daidai da abubuwan da suka dace na ASTM A999, kuma ana iya amfani da ƙarshen bututun da aka yanke azaman samfuri.
Lanƙwasa Gwajin
Don bututu wanda diamita ya wuce NPS 25 kuma wanda diamita zuwa kaurin bango ya kai 7.0 ko ƙasa da haka za a yi gwajin lanƙwasa a maimakon gwajin lanƙwasa.
Za a lanƙwasa samfuran gwajin lanƙwasa a cikin ɗaki da zafin jiki ta hanyar 180 ° ba tare da fashe a waje na ɓangaren lanƙwasa ba. Diamita na ciki na lanƙwasawa zai zama 1 in. [25 mm].
Bayyanar
Fuskar bututun ƙarfe zai zama santsi kuma ko da, ba tare da scab, dinki, cinya, hawaye, ko slives ba.
Idan zurfin kowane lahani ya wuce kashi 12.5% na kauri na bango ko kuma idan ragowar kaurin bangon ya kasance ƙasa da ƙaramin ƙayyadadden kauri, za a ɗauki yankin aibi.
Lokacin da ragowar kauri na bango yana cikin ƙayyadaddun iyaka, ana iya cire lahani ta niƙa.
Idan ragowar kaurin bangon ya kasance ƙasa da ƙaramin abin da ake buƙata, za a gyara lahanin ta hanyar walda ko cire ta hanyar yanke.
Haƙuri na Diamita
Don bututun da NPS [DN] ya umarta ko diamita na waje, bambance-bambancen diamita na waje ba zai wuce buƙatun da aka nuna a teburin da ke ƙasa ba:
| NPS [DN] Mai tsarawa | Bambance-bambancen da aka halatta | |
| in. | mm | |
| 1/8 zuwa 1 1/2 [6 zuwa 40], inch. | ± 1/64 [0.015] | ± 0.40 |
| Sama da 1 1/2 zuwa 4 [40 zuwa 100], inch. | ± 1/32 [0.031] | ± 0.79 |
| Sama da 4 zuwa 8 [100 zuwa 200], inci. | -1/32 - +1/16 [-0.031 - +0.062] | -0.79 - +1.59 |
| Sama da 8 zuwa 12 [200 zuwa 300], inci. | -1/32 - +3/32 [-0.031 - 0.093] | -0.79 - +2.38 |
| Fiye da 12 [300] | ± 1% na ƙayyadaddun diamita na waje | |
Don bututun da aka umarce shi zuwa diamita, diamita na ciki ba zai bambanta fiye da 1% daga ƙayyadadden diamita na ciki ba.
Hakuri da Kaurin bango
Baya ga ƙayyadaddun ƙayyadaddun ƙayyadaddun kauri na bango don bututu wanda aka sanya ta iyakance akan nauyi a cikin ASTM A999, kaurin bango don bututu a kowane wuri zai kasance cikin juriyar da aka kayyade a cikin tebur da ke ƙasa:
| NPS [DN] Mai tsarawa | Haƙuri, % ƙayyadaddun tsari |
| 1/8 zuwa 2 1/2 [6 zuwa 65] duk darajar t/D | -12.5 - +20.0 |
| Sama da 2 1/2 [65], t/D ≤ 5% | -12.5 - +22.5 |
| Sama da 2 1/2, t/D ： 5% | -12.5 - +15.0 |
| t = ƙayyadaddun kauri na bango; D = Ƙayyadaddun Diamita na Waje. | |
ASTM A335 P5 bututun ƙarfe ana amfani da su da farko a cikin tsarin bututun da ke aiki a ƙarƙashin yanayin zafi da matsanancin matsin lamba.
Saboda kyakkyawan juriyar yanayin zafi da kaddarorin injina, ana amfani da su sosai a cikin masana'antar petrochemical, samar da wutar lantarki, da masana'antar matatar.
takamaiman aikace-aikace sun haɗa da:
- Bututun tukunyar jirgi
- Masu musayar zafi
- Layukan aiwatar da Petrochemical
- Bututun wutar lantarki
- Tasoshin matsa lamba na tukunyar jirgi
| ASME | ASTM | EN | JIS |
| ASME SA335 P5 | Saukewa: ASTM A213T5 | EN 10216-2 X11CrMo5+I | Saukewa: JIS G3458STPA25 |
Abu:ASTM A335 P5 bututun ƙarfe da kayan aiki mara nauyi;
Girman:1/8 "zuwa 24", ko musamman bisa ga bukatun ku;
Tsawon:Tsawon bazuwar ko yanke don yin oda;
Marufi:Black shafi, beveled iyakar, bututu karshen kare, katako akwakun, da dai sauransu.
Taimako:Takaddun shaida na IBR, TPI dubawa, MTC, yankan, sarrafawa, da gyare-gyare;
MOQ:1 m;
Sharuɗɗan Biyan kuɗi:T / T ko L / C;
Farashin:Tuntube mu don sabon farashin bututun ƙarfe na T11.
