JIS G 3461 simbi pombiis a seamless (SMLS) kana yemagetsi-resistance-welded (RW) kabhoni simbi pombi, inonyanya kushandiswa mumaboilers uye kupisa kunopisa kune maapplication akadai sekuona kupisa kwekuchinja pakati pemukati nekunze kwechubhu.
STB340iri kabhoni simbi pombi giredhi muJIS G 3461 mwero.Iine simba shoma rekuita 340 MPa uye simba rekushomeka re175 MPa.
Icho chinhu chesarudzo kune akawanda maindasitiri maapplication nekuda kwesimba rayo repamusoro, kugadzikana kwakanaka kwekupisa, kuchinjika, hukama hwekurarisa, kudhura-kushanda, uye kuita zvakanaka.
JIS G 3461ine mamakisi matatu.STB340, STB410, STB510.
STB340: Simba shoma shoma: 340 MPa;Simba shoma regoho: 175 MPa.
STB410: Minimum Tensile Strength: 410 MPa;Yakaderera Goho Simba: 255 MPa.
STB510:Minimum Tensile Strength: 510 MPa;Yakaderera Goho Simba: 295 MPa.
Muchokwadi, hazvina kuoma kuziva kuti iyo JIS G 3461 giredhi inorongedzerwa maererano neiyo shoma tensile simba resimbi pombi.
Sezvo giredhi rezvinhu richiwedzera, simba rayo rekusimba uye goho rinowedzera zvinoenderana, zvichibvumira kuti zvinhu zvimire kuremerwa nepamusoro uye kumanikidzwa kwenzvimbo dzinodiwa dzebasa.
Kunze dhayamita 15.9-139.8mm.
Zvishandiso mumaboilers uye zvinopisa zvinopisa kazhinji hazvidi yakakura kwazvo madhayamita echubhu.Diki madhayamita echubhu anowedzera kupisa kwekupisa nekuti nzvimbo yepasi kusvika kuvhoriyamu reshiyo yekutamisa kupisa yakakwira.Izvi zvinobatsira kuendesa simba rekupisa nekukurumidza uye zvakanyanya.
Machubhu anozogadzirwa kubva kunesimbi yakaurawa.
Kusanganiswa kwenzira dzekugadzira pombi uye nzira dzekupedzisa.
Muchidimbu, vanogona kugoverwa sezvinotevera:
Kupisa-kupedzwa seamless simbi chubhu: SH
Kutonhora-kupedzwa seamless simbi chubhu: SC
Semagetsi kuramba welded simbi chubhu: EG
Kupisa-kupedzwa kwemagetsi kuramba welded simbi chubhu: EH
Kutonhora-kupedzwa kwemagetsi kupikisa welded simbi chubhu: EC
Heino kuyerera kwekugadzirwa kweHot-yakapedza isina musono.
Yekugadzira isina musono nzira, inogona kupatsanurwa kuita seamless simbi pombi ine dhayamita yekunze inodarika 30mm uchishandisa kupisa kunopisa kugadzira, uye 30mm uchishandisa kutonhora kwekupedzisa kugadzira.
Nzira dzekuongorora dzekupisa dzichaenderana nezviyero muJIS G 0320.
Alloying zvinhu zvisiri izvo zvinogona kuwedzerwa kuti uwane chaiwo zvivakwa.
Kana chigadzirwa chikaongororwa, kutsauka kwemaitiro emakemikari epombi kuchasangana nezvinodiwa zveTafura 3 yeJIS G 0321 yemapombi esimbi isina musono uye Tafura 2 yeJIS G 0321 yekupikisa-welded simbi pombi.
| Chiratidzo chegiredhi | C (Carbon) | Si (Silicon) | Mn (Manganese) | P (Phosphorus) | S (Sulfur) |
| max | max | max | max | ||
| STB340 | 0.18 | 0.35 | 0.30-0.60 | 0.35 | 0.35 |
| Mutengi anogona kutsanangura huwandu hweSi kuti huve pakati pe0.10% kusvika 0.35%. | |||||
Iyo kemikari inoumbwa ye STB340 yakagadzirirwa kuve nechokwadi chakakwana chemichini zvivakwa uye machinability uku uchigadzira zvinhu zvakakodzeresa welding uye maapplication munzvimbo dzepamusoro-tembiricha.
| Chiratidzo chegiredhi | Kusimba simba a | Goho poindi kana chiratidzo chekusimbisa | Elongation min,% | ||
| Kunze dhayamita | |||||
| ＜10mm | ≥10mm ＜20mm | ≥20mm | |||
| N/mm² (MPA) | N/mm² (MPA) | Test chidimbu | |||
| Nha.11 | Nha.11 | No.11/No.12 | |||
| min | min | Tensile test direction | |||
| Parallel kune chubhu axis | Parallel kune chubhu axis | Parallel kune chubhu axis | |||
| STB340 | 340 | 175 | 27 | 30 | 35 |
Ongorora: chete kune iyo inopisa exchanger machubhu, mutengi anogona, pazvinenge zvichidikanwa, kutsanangura kukosha kwakanyanya kwesimba rekusimba.Muchiitiko ichi, iyo yakanyanya tensile simba kukosha ichave kukosha kunowanikwa nekuwedzera 120 N/mm² kune kukosha kuri mutafura iyi.
Kana bvunzo dzakasimba dzinoitwa paMuedzo chidimbu Nha. 12 yechubhu pasi pe8 mm muukobvu hwemadziro.
| Chiratidzo chegiredhi | Test piece inoshandiswa | Elongation min, % | ||||||
| Kukora kwemadziro | ||||||||
| ＞1 ≤2 mm | ＞2 ≤3 mm | ＞3 ≤4 mm | ＞4 ≤5 mm | ＞5 ≤6 mm | ＞6 ≤7 mm | ＞7 ＜8 mm | ||
| STB340 | Nhamba 12 | 26 | 28 | 29 | 30 | 32 | 34 | 35 |
Hwaro hwekurebesa patafura iyi hunoverengerwa nekubvisa 1.5 % kubva pahukoshi hwekurebesa hwakapihwa muTebhurari 4 yega yega kuderera kwechubhu mudhuri kubva pa8401 mm, uye nekutenderedza mugumisiro kune nhamba yakakwana maererano neMutemo A weJIS Z 8401.
Nzira yekuedza ichave maererano neJIS Z 2245. Kuoma kwechidimbu chekuedza kunofanira kuyerwa pamuchinjiko-chikamu kana mukati memukati panzvimbo nhatu pachidimbu chekuedza.
| Chiratidzo chegiredhi | Rockwell kuoma (kureva kukosha kwezvinzvimbo zvitatu) HRBW |
| STB340 | 77 max. |
| STB410 | 79 max. |
| STB510 | 92 max. |
Muedzo uyu haufanirwe kuitwa pamachubhu emadziro ukobvu 2 mm kana pasi.Nokuda kwemagetsi ekupikisa welded steel tubes, muedzo uchaitwa mune chikamu kunze kweweld kana nzvimbo dzinopisa.
Izvo hazvishande kune seamless simbi machubhu.
Test Method Isa muenzaniso mumuchina uye ugoita kuti ive kureba kusvikira chinhambwe chiri pakati pemapuratifomu maviri chasvika pakukosha kwakatarwa H. Wobva watarisa chienzaniso chekutsemuka.
Paunenge uchiyedza kupikisa kwakakomba welded pombi, mutsara uri pakati peiyo weld nepakati pepombi ndeye perpendicular kune yekumanikidza kutungamira.
H=(1+e)t/(e+t/D)
H: chinhambwe pakati pemapuleti (mm)
t: kukora kwemadziro echubhu (mm)
D: kunze kwedhayamita yechubhu (mm)
е:nguva dzose inotsanangurwa yegiredhi imwe neimwe yechubhu.STB340: 0.09;STB410: 0.08;STB510: 0.07.
Izvo hazvishande kune seamless simbi machubhu.
Imwe magumo emuenzaniso inopfuta pakupisa kwekamuri (5 ° C kusvika 35 ° C) ine conical tool pakona ye 60 ° kusvikira kunze kwedhayamita yawedzerwa nechikamu che 1.2 uye yakaongororwa kuti yakatsemuka.
Ichi chinodiwa chinoshandawo kumachubhu ane dhayamita yekunze inodarika 101.6 mm.
Iyo reverse flattening bvunzo inogona kusiiwa paunenge uchiita bvunzo yekupisa.
Cheka 100 mm kureba kwechidimbu chekuedza kubva kune rumwe rutivi rwepombi uye cheka chidimbu chekuedza muhafu ye90 ° kubva kune weld line kumativi ose maviri edenderedzwa, uchitora hafu ine weld sechidimbu chekuedza.
Patembiricha yemumba (5 °C kusvika 35 °C) isa mufananidzo wacho mundiro ine weld kumusoro uye ongorora mufananidzo wacho kana pakatsemuka.
Yese pombi yesimbi inoda kuongororwa hydrostatically kana isiri-destructivelykuve nechokwadi chemhando uye kuchengetedzwa kwepombi uye kusangana nezviyero zvekushandisa.
Hydraulic Test
Bata mukati mepombi zvishoma kana kumanikidza kwepamusoro P (P max 10 MPa) kweanenge masekonzi mashanu, wozotarisa kuti pombi inogona kumirisana nekumanikidza pasina kubuda.
P=2st/D
P: test pressure (MPa)
t: kukora kwemadziro echubhu (mm)
D: kunze kwedhayamita yechubhu (mm)
s: 60 % yehushoma hushoma kukosha hwegoho poindi kana chiratidzo chekusimbisa.
Muedzo usingaparadzi
Kuedza kusingaparadzi kwemachubhu esimbi kunofanirwa kuitwa neultrasonic kana eddy ikozvino kuyedza.
Forultrasonichunhu hwekuongorora, chiratidzo kubva kune referenzi sampuli ine referensi chiyero chekirasi UD sezvakatsanangurwa mukatiJIS G 0582ichaonekwa seyero yearamu uye ichava nechiratidzo chekutanga chakaenzana kana chikuru kupfuura chiyero chearamu.
Iyo yakajairwa yekuona senitivity yeeddy currentbvunzo ichave chikamu EU, EV, EW, kana EX yakatsanangurwa mukatiJIS G 0583, uye hapazove nemasaini akaenzana kana makuru kupfuura masiginecha anobva kumuenzaniso wereferenzi une chiyero chereferenzi chechikamu chakataurwa.
For morePipe Weight Charts uye Pipe Schedulesmukati mechiyero, unogona kudzvanya kuburikidza.
Tora nzira yakakodzera yekuisa mazita anotevera ruzivo.
a) Chiratidzo chegiredhi;
b) Chiratidzo chekugadzira nzira;
c) Dimensions: kunze dhayamita uye rusvingo ukobvu;
d) Zita remugadziri kana zita rekuzivisa.
Kana kumaka pachubhu yega yega kwakaoma nekuda kwediki dhayamita yekunze kana kana zvakumbirwa nemutengi, chiratidzo chinogona kupihwa pachisumbu chimwe nechimwe chechubhu nenzira yakakodzera.
STB340 inowanzoshandiswa mukugadzira pombi dzemvura uye pombi dzeflue kune dzakasiyana siyana boilers dzeindasitiri, kunyanya munzvimbo dzinodiwa kupokana nekupisa kwakanyanya uye kumanikidza.
Nekuda kwehunhu hwayo hwakanaka hwekupisa kupisa, inokodzerawo kugadzirwa kwepombi dzekutsinhanisa kupisa, zvichibatsira kuendesa kupisa zvakanaka pakati pemidhiya yakasiyana.
Inogona zvakare kushandiswa kutakura tembiricha yepamusoro kana yakanyanya-kudzvanywa zvinwiwa, senge chiutsi kana mvura inopisa, uye inoshandiswa zvakanyanya mumakemikari, magetsi emagetsi, uye maindasitiri ekugadzira michina.
ASTM A106 Giredhi A
DIN 17175 St35.8
DIN 1629 St37.0
BS 3059-1 Grade 320
EN 10216-1 P235GH
GB 3087 20#
GB 5310 20G
Kunyangwe zvinhu izvi zvingave zvakafanana maererano nekuumbwa kwemakemikari uye ekutanga zvivakwa, chaiwo ekupisa kupisa maitiro uye machining anogona kukanganisa zvimiro zvechigadzirwa chekupedzisira.
Naizvozvo, kuenzanisa kwakadzama uye kuyedzwa kwakakodzera kunofanirwa kuitwa pakusarudza zvinhu zvakaenzana zvekushandisa zvinoshanda.
Kubva payakavambwa muna 2014, Botop Steel yave mutengesi anotungamira wekabhoni simbi pombi kuChamhembe kweChina, inozivikanwa nebasa repamusoro, zvigadzirwa zvemhando yepamusoro, uye mhinduro dzakakwana.Iyo kambani inopa dzakasiyana siyana dzekabhoni simbi mapaipi uye zvigadzirwa zvine hukama, zvinosanganisira isina musono, ERW, LSAW, uye SSAW simbi pombi, pamwe neyakakwana mutsara wepombi fittings uye flanges.
Zvigadzirwa zvayo zvehunyanzvi zvinosanganisira alloys epamusoro-giredhi uye austenitic simbi isina tsvina, yakagadzirirwa kusangana nezvinodiwa zveakasiyana mapurojekiti epombi.
