ASTM A335 P5, wanda kuma aka sani da ASME SA335 P5, bututu ne mai ƙarancin ƙarfe mara tsari wanda aka ƙera don hidimar zafi mai yawa.
P5 ya ƙunshi chromium 4.00 ~ 6.00% da molybdenum 0.45 ~ 0.65%, wanda ke ba da ƙarfi da aiki mai kyau a ƙarƙashin yanayin zafi da matsin lamba mai yawa. Ana amfani da shi sosai a cikin kayan aiki kamar su boilers, superheaters, da masu musayar zafi.
Lambar UNS ɗinta ita ce K41545.
Mai ƙera da Yanayi
Za a yi bututun ƙarfe na ASTM A335 P5 ta hanyar tsari mara matsala kuma za a yi su da zafi ko kuma a yi musu fenti mai sanyi, kamar yadda aka ƙayyade.
Bututun da aka gama da zafi bututun ƙarfe ne marasa tsari waɗanda aka ƙera daga billets ta hanyar dumama da birgima, yayin da bututun da aka ja da sanyi bututun ƙarfe ne marasa tsari waɗanda aka samar ta hanyar zana bututun da aka gama da zafi a zafin ɗaki.
Idan kuna son ƙarin koyo game da hanyoyin ƙera waɗannan nau'ikan bututun ƙarfe guda biyu marasa shinge, kuna iya dannawa"Menene Bututun Karfe Mara Sumul?"don ƙarin bayani.
Maganin Zafi
Za a sake dumama bututun ASTM A335 P5 don maganin zafi da kuma maganin zafi ta hanyarcikakken ko isothermal annealing or normalize da kuma daidaita.
An nuna takamaiman buƙatun a cikin teburin da ke ƙasa:
| Matsayi | Nau'in maganin zafi | Ƙaramin Sauyawa ko Zafin Jiki |
| ASTM A335 P5 | cikakken ko isothermal annea | — |
| normalize da kuma daidaita yanayin | 1250 ℉ [675 ℃] minti |
Ayyukan da suka haɗa da dumama bututun ƙarfe sama da zafin da suke da shi, kamar walda, flanging, da lanƙwasawa mai zafi, ya kamata a bi su da maganin zafi mai dacewa.
Hanyoyin gwaji don haɗakar sinadarai da halayen injiniya na bututun ƙarfe na P5 dole ne su bi ƙa'idodin da suka dace na ASTM A999.
| Matsayi | Abun da aka haɗa, % | ||||||
| C | Mn | P | S | Si | Cr | Mo | |
| P5 | matsakaicin 0.15 | 0.30 ~ 0.60 | matsakaicin 0.025 | matsakaicin 0.025 | matsakaicin 0.50 | 4.00 ~ 6.00 | 0.45 ~ 0.65 |
Halayen Tashin Hankali
| Matsayi | Ƙarfin Taurin Kai | Ƙarfin Ba da Kyauta | Ƙarawa a cikin inci 2 ko 50 mm |
| P5 | 60 ksi [415 MPa] minti | 30 ksi [205 MPa] minti | Minti 30% |
Taurin Halaye
Ma'aunin ASTM A335 bai ƙayyade duk wani buƙatun tauri ga bututun ƙarfe na P5 ba.
Gwajin Faɗin Ƙasa
Za a gudanar da gwajin lanƙwasa kuma a yi samfurinsa bisa ga buƙatun ASTM A999 masu dacewa, kuma ana iya amfani da ƙarshen bututun da aka yanke azaman samfura.
Gwajin Lanƙwasa
Ga bututun da diamitarsa ta wuce NPS 25 kuma rabon kauri tsakanin diamita da bango shine 7.0 ko ƙasa da haka, za a yi masa gwajin lanƙwasa maimakon gwajin lanƙwasa.
Za a lanƙwasa samfuran gwajin lanƙwasa a zafin ɗaki har zuwa digiri 180 ba tare da fashewa a wajen ɓangaren lanƙwasa ba. Diamita na ciki na lanƙwasa zai zama inci 1 [25 mm].
Bayyanar
Saman bututun ƙarfen ya kamata ya zama santsi kuma daidai, ba tare da ɓarkewa, ɗinki, cinyoyi, yagewa, ko zare ba.
Idan zurfin kowace lahani ya wuce kashi 12.5% na kauri na bango ko kuma idan kauri na bango da ya rage ya ƙasa da mafi ƙarancin kauri da aka ƙayyade, za a ɗauki yankin a matsayin mara lahani.
Idan sauran kauri na bango ya kasance cikin iyakokin da aka ƙayyade, ana iya cire lahani ta hanyar niƙa.
Idan kauri na bango da ya rage ya kasa da mafi ƙarancin buƙata, za a gyara lahani ta hanyar walda ko kuma a cire shi ta hanyar yankewa.
Juriyar Diamita
Ga bututun da NPS [DN] ta tsara ko diamita na waje, bambance-bambancen diamita na waje ba zai wuce buƙatun da aka nuna a cikin teburin da ke ƙasa ba:
| Mai Zaɓen NPS [DN] | Bambancin da aka Yarda | |
| a cikin. | mm | |
| 1/8 zuwa 1 1/2 [6 zuwa 40], inci. | ±1/64 [0.015] | ±0.40 |
| Sama da inci 1 1/2 zuwa 4 [40 zuwa 100], inci. | ±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 |
| Sama da 12 [300] | ±1% na diamita na waje da aka ƙayyade | |
Don bututun da aka yi wa oda zuwa diamita na ciki, diamita na ciki bai kamata ya bambanta fiye da 1% daga diamita na ciki da aka ƙayyade ba.
Juriyar Kauri a Bango
Baya ga iyakancewar kauri na bango ga bututu wanda aka sanya ta hanyar iyakance nauyi a cikin ASTM A999, kauri na bango na bututu a kowane lokaci zai kasance cikin jurewar da aka ƙayyade a cikin teburin da ke ƙasa:
| Mai Zaɓen NPS [DN] | An ƙayyade haƙuri, % siffar |
| 1/8 zuwa 2 1/2 [6 zuwa 65] ya haɗa da duk rabon 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 = Kauri a Bango da aka ƙayyade; D = Diamita a Waje da aka ƙayyade. | |
Ana amfani da bututun ƙarfe na ASTM A335 P5 galibi a cikin tsarin bututun da ke aiki a ƙarƙashin yanayin zafi mai yawa da matsin lamba.
Saboda kyawun juriyarsu ga yanayin zafi mai yawa da kuma kayan aikin injiniya, ana amfani da su sosai a masana'antar man fetur, samar da wutar lantarki, da matatun mai.
Takamaiman aikace-aikace sun haɗa da:
- Bututun tukunyar jirgi
- Masu musayar zafi
- Layukan aikin sinadarai na fetur
- bututun injin samar da wutar lantarki
- Tasoshin matsi na tukunyar jirgi
| ASME | ASTM | EN | JIS |
| ASME SA335 P5 | ASTM A213 T5 | EN 10216-2 X11CrMo5+I | JIS G 3458 STPA25 |
Kayan aiki:bututun ƙarfe mara misaltuwa na ASTM A335 P5 da kayan aiki;
Girman:1/8" zuwa 24", ko kuma an keɓance shi bisa ga buƙatunku;
Tsawon:Tsawon bazata ko yankewa bisa ga oda;
Marufi:Baƙin shafi, ƙarshen da aka yanke, kariyar ƙarshen bututu, akwatunan katako, da sauransu.
Tallafi:Takaddun shaida na IBR, duba TPI, MTC, yankewa, sarrafawa, da kuma keɓancewa;
Moq:mita 1;
Sharuɗɗan Biyan Kuɗi:T/T ko L/C;
Farashi:Tuntube mu don samun sabbin farashin bututun ƙarfe na T11.
