JIS G 3461 pombi yesimbiipombi yesimbi yekabhoni isina musono (SMLS) kana kuti inodzivirirwa nemagetsi (ERW), inonyanya kushandiswa mumaboilers uye muzvishandiso zvekupisa zvinoshandiswa pakuchinjana kupisa pakati pechubhu mukati nekunze.
STB340imhando yepombi yesimbi yekabhoni iri muJIS G 3461 standard. Ine simba rekudhonza risingasviki 340 MPa uye simba rekugovanisa risingasviki 175 MPa.
Ndiyo inonyanya kushandiswa mumaindasitiri nekuda kwesimba rayo guru, kugadzikana kwayo pakupisa, kugona kuchinjika, kuramba ngura, kushanda kwayo zvakanaka, uye kugona kuigadzira zvakanaka.
JIS G 3461ine magiredhi matatu.STB340, STB410, STB510.
STB340Simba rekudhonza diki: 340 MPa; Simba rekugova diki: 175 MPa.
STB410Simba Rishoma Rekudhonza: 410 MPa; Simba Rishoma Rekudhonza: 255 MPa.
STB510:Simba Rishoma Rekusimba: 510 MPa; Simba Rishoma Rekusimba: 295 MPa.
Kutaura zvazviri, hazvina kuoma kuziva kuti JIS G 3461 grade yakarongwa zvichienderana nekusimba kushoma kwekusimba kwepombi yesimbi.
Sezvo giredhi rechinhu ichi richikwira, simba rayo rekukwesha uye goho rinokura zvinoenderana, zvichibvumira chinhu ichi kuti chigone kumira mutoro wakakwira uye kumanikidzwa munzvimbo dzinoda kushanda zvakanyanya.
Dhayamita yekunze ye15.9-139.8mm.
Kushandiswa mumaboilers nema heat exchangers hakudi dhayamita huru dzemachubhu. Dhayamita diki dzemachubhu dzinowedzera kushanda zvakanaka kwekupisa nekuti chiyero chenzvimbo yepamusoro nevhoriyamu yekufambisa kupisa chakakwira. Izvi zvinobatsira kufambisa simba rekupisa nekukurumidza uye zvinobudirira.
Machubhu anofanira kugadzirwa kubva kusimbi yakaurayiwa.
Musanganiswa wenzira dzekugadzira mapaipi nenzira dzekupedzisa.
Muchidimbu, vanogona kupatsanurwa seizvi:
Chubhu yesimbi isina musono yakapedzwa nekupisa: SH
Chubhu yesimbi isina musono yakapedzwa inotonhora: SC
Sekudzivirira kwemagetsi, chubhu yesimbi yakasungirirwa: EG
Chubhu yesimbi yakasungirirwa yesimbi yakasungirirwa nemagetsi inopisa: EH
Chubhu yesimbi yakasungirirwa yesimbi yakanyungudutswa nemagetsi inotonhora: EC
Heino kuyerera kwekugadzirwa kweHot-finished seamless.
Pakugadzira zvinhu zvisina musono, zvinogona kukamurwa kuita mapaipi esimbi asina musono ane dhayamita yekunze inodarika 30mm uchishandisa kugadzirwa kwekupedzisa kunopisa, uye 30mm uchishandisa kugadzirwa kwekupedzisa kutonhora.
Nzira dzekuongorora kupisa dzinofanira kuenderana nezvinodiwa muJIS G 0320.
Zvimwe zvinhu zvinosanganisa alloying kunze kweizvozvo zvinogona kuwedzerwa kuti pave nezvivakwa zvakati.
Kana chigadzirwa chacho chaongororwa, kukosha kwekutsauka kwemakemikari ari mupombi kunofanira kusangana nezvinodiwa neTafura 3 yeJIS G 0321 yemapombi esimbi asina musono uye Tafura 2 yeJIS G 0321 yemapombi esimbi ane resistance-welded.
| Chiratidzo chegiredhi | C (Kabhoni) | Si (Silicone) | Mn (Manganese) | P (Phosphorus) | S (Sarufa) |
| zvakanyanya | zvakanyanya | zvakanyanya | zvakanyanya | ||
| STB340 | 0.18 | 0.35 | 0.30-0.60 | 0.35 | 0.35 |
| Mutengi anogona kutaura kuti huwandu hweSi hunofanira kuva pakati pe0.10% kusvika 0.35%. | |||||
Kuumbwa kwemakemikari eSTB340 kwakagadzirirwa kuve nechokwadi chekuti michina yacho ine hunhu hwakakwana uye kuti michina yacho ishande zvakanaka ukuwo ichiita kuti chinhu chacho chikwanise kusungirirwa uye kushandiswa munzvimbo dzinopisa zvakanyanya.
| Chiratidzo chegiredhi | Simba rekusimba a | Kuoma kwemhedzisiro kana kushushikana kweuchapupu | Kureba kweminiti, % | ||
| Dhayamita yekunze | |||||
| 10mm | ≥10mm ＜20mm | ≥20mm | |||
| N/mm² (MPA) | N/mm² (MPA) | Chidimbu chekuyedza | |||
| Nhamba 11 | Nhamba 11 | Nhamba 11/Nhamba 12 | |||
| miniti | miniti | Kutungamirirwa kwekuyedza kwesimba | |||
| Yakafanana nechubhu axis | Yakafanana nechubhu axis | Yakafanana nechubhu axis | |||
| STB340 | 340 | 175 | 27 | 30 | 35 |
Cherechedza: chete kumachubhu ekupisa, mutengi anogona, kana zvichidikanwa, kutsanangura kukosha kwakanyanya kwesimba rekudhonza. Muchiitiko ichi, kukosha kwakanyanya kwesimba rekudhonza kunofanira kuva kukosha kunowanikwa nekuwedzera 120 N/mm² kune kukosha kuri patafura ino.
Kana bvunzo yekudhonza yaitwa paTest piece Nhamba 12 yechubhu iri pasi pe8 mm muukobvu hwemadziro.
| Chiratidzo chegiredhi | Chidimbu chekuyedza chakashandiswa | Kureba miniti, % | ||||||
| Ukobvu hwemadziro | ||||||||
| ＞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 |
Makoshero ekureba ari mutafura iyi anoverengerwa nekubvisa 1.5% kubva pakureba kwakapihwa muTafura 4 pakuderera kwese kwe1 mm muukobvu hwemadziro echubhu kubva pa8 mm, uye nekutenderedza mhedzisiro yacho kuita nhamba yakakwana zvichienderana neMutemo A weJIS Z 8401.
Nzira yekuyedza inofanira kunge inoenderana neJIS Z 2245. Kuoma kwechinhu chekuyedza kunofanira kuyerwa pachikamu chayo kana pamusoro pemukati munzvimbo nhatu pachikamu chimwe nechimwe chekuyedza.
| Chiratidzo chegiredhi | Kuomarara kweRockwell (avhareji kukosha kwenzvimbo nhatu) HRBW |
| STB340 | 77 max. |
| STB410 | 79 yepamusoro. |
| STB510 | 92 max. |
Kuyedza uku hakufanirwe kuitwa pamachubhu ane ukobvu hwemadziro hwe2 mm kana pasi. Kune machubhu esimbi akasungirirwa anodzivirira magetsi, kuyedza uku kunofanirwa kuitwa muchikamu chisiri cheweld kana nzvimbo dzine kupisa.
Hazvishande pamachubhu esimbi asina musono.
Nzira Yekuedza Isa sampuli mumuchina woibata-bata kusvika daro riri pakati pemapuratifomu maviri rasvika pahuwandu hwakatarwa H. Wobva watarisa sampuli yacho kuti haina kutsemuka here.
Pakuyedza pombi yakasungirirwa ine resistance yakakosha, mutsetse uri pakati pe weld nepakati pepombi wakatarisana negwara rekudzvanywa.
H=(1+e)t/(e+t/D)
H: daro pakati pemaplatens (mm)
t: ukobvu hwemadziro echubhu (mm)
D: dhayamita yekunze kwechubhu (mm)
e:chinoramba chichitsanangurwa pamhando yega yega yechubhu. STB340: 0.09; STB410: 0.08; STB510: 0.07.
Hazvishande pamachubhu esimbi asina musono.
Kugumira kumwe kwemuenzaniso kunopfuta patembiricha yemumba (5°C kusvika 35°C) nechishandiso checonical pakona ye60° kusvika dhayamita yekunze yakura ne1.2 uye yoongororwa kuti hapana mitswe here.
Chinodiwa ichi chinoshandawo kumachubhu ane dhayamita yekunze inopfuura 101.6 mm.
Bvunzo rekupeta reverse rinogona kusiiwa pakuita bvunzo rekupeta.
Cheka chidimbu chekuyedza chine hurefu hwemamilimita zana kubva kumucheto wepombi wocheka chidimbu chekuyedza nehafu ye90° kubva pamutsetse wekunamira kumativi ese edenderedzwa, uchitora hafu ine weld sechidimbu chekuyedza.
Patembiricha yemumba (5°C kusvika 35°C) bvisa chifananidzo mundiro ine weld iri pamusoro woongorora kuti chifananidzo chacho hachina kutsemuka here.
Pombi yega yega yesimbi inofanirwa kuongororwa ne hydrostatic kana kuti kwete kuparadzakuona kuti pombi yacho ine mhando uye yakachengeteka uye kuti ienderane nezvinodiwa pakushandisa.
Kuedzwa kweHydraulic
Bata mukati mepombi padanho repamusoro kana kuti P (P max 10 MPa) kwemasekonzi mashanu, wobva watarisa kuti pombi inogona kumira kumanikidzwa pasina kubuda mvura.
P=2st/D
P: kumanikidzwa kwekuyedza (MPa)
t: ukobvu hwemadziro echubhu (mm)
D: dhayamita yekunze kwechubhu (mm)
s: 60% yehuwandu hushoma hwakatarwa hwepfungwa yekukohwa kana kusimba kweuchapupu.
Muedzo Usingaparadze
Kuyedzwa kwemachubhu esimbi kusingaparadze kunofanirwa kuitwa nekuyedzwa kwe ultrasound kana eddy current.
Zveultrasonichunhu hwekuongorora, chiratidzo kubva kumuenzaniso wekutarisa une mwero wekutarisa wekirasi yeUD sezvakatsanangurwa muJIS G 0582inofanira kutariswa sedanho realarm uye inofanira kuva nechiratidzo chepakutanga chakaenzana kana kupfuura danho realarm.
Kuzivikanwa kwakajairika kwekuona kweeddy currentbvunzo inofanira kunge iri chikamu cheEU, EV, EW, kana EX chakatsanangurwa muJIS G 0583, uye hapafanire kuva nezviratidzo zvakaenzana kana kupfuura zviratidzo zvinobva mumuenzaniso wekutarisa une chiyero chekutarisa chechikamu chataurwa.
Kuti uwane zvimweMachati eUremu hweMapombi uye Zvirongwa zveMapombimukati memutemo, unogona kudzvanya.
Tora nzira yakakodzera yekunyora mazita emashoko anotevera.
a) Chiratidzo chegiredhi;
b) Chiratidzo chenzira yekugadzira;
c) Zviyero: dhayamita yekunze uye ukobvu hwemadziro;
d) Zita remugadziri kana zita rekambani inomuzivisa.
Kana chiratidzo chiri pachubhu yega yega chakaoma nekuda kwedhayamita diki rekunze kana kana chakumbirwa nemutengi, chiratidzo chacho chinogona kupihwa pachubhu yega yega nenzira yakakodzera.
STB340 inowanzoshandiswa mukugadzira mapaipi emvura nemapombi emvura emabhaira akasiyana-siyana emaindasitiri, kunyanya munzvimbo dzinoda kuramba kupisa kwakanyanya nekumanikidzwa.
Nekuda kwehunhu hwayo hwakanaka hwekufambisa kupisa, yakakodzerawo kugadzirwa kwemapaipi ekuchinjana kupisa, zvichibatsira kufambisa kupisa zvinobudirira pakati penzvimbo dzakasiyana.
Inogona zvakare kushandiswa kutakura mvura dzinopisa zvakanyanya kana dzine simba guru, dzakadai seutsi kana mvura inopisa, uye inoshandiswa zvakanyanya mumaindasitiri ekugadzira makemikari, magetsi, uye michina.
ASTM A106 Giredhi A
DIN 17175 St35.8
DIN 1629 St37.0
BS 3059-1 Giredhi 320
EN 10216-1 P235GH
GB 3087 20#
GB 5310 20G
Kunyangwe zvinhu izvi zvingave zvakafanana maererano nekuumbwa kwemakemikari uye hunhu hwepakutanga, maitiro chaiwo ekurapa kupisa uye machining zvinogona kukanganisa hunhu hwechigadzirwa chekupedzisira.
Saka, kuenzanisa kwakadzama uye bvunzo dzakakodzera zvinofanirwa kuitwa pakusarudza zvinhu zvakaenzana zvekushandisa zvinoshanda.
Kubva payakatangwa muna 2014, Botop Steel yave kambani inotungamira mukutengesa mapaipi esimbi yekabhoni kuChamhembe kweChina, inozivikanwa nebasa rakanaka kwazvo, zvigadzirwa zvemhando yepamusoro, uye mhinduro dzakakwana. Kambani iyi inopa mapaipi akasiyana-siyana esimbi yekabhoni nezvimwe zvigadzirwa zvine chekuita nayo, zvinosanganisira mapaipi esimbi asina musono, ERW, LSAW, uye SSAW, pamwe chete nehurongwa hwakazara hwemapipi nemaflange.
Zvigadzirwa zvayo zvehunyanzvi zvinosanganisirawo alloys dzemhando yepamusoro uye simbi dzisina ngura dzinoshandiswa mukugadzira, dzakagadzirirwa kusangana nezvinodiwa nemapurojekiti akasiyana-siyana emapombi.
