STPT 370libakala lomgangatho waseJapan iJIS G 3456 kwimibhobho yentsimbi yekhabhoni, esetyenziselwa imibhobho yoxinzelelo kwindawo ezinamaqondo obushushu angaphezu kwama-350°C.Isenokuba yimibhobho engenamthungo okanye edityanisiweyo kusetyenziswa inkqubo yokumelana nombane (ERW).Iimpawu zemishini ye-STPT 370 yempahla yincinci yamandla angaphantsi kwe-370 MPa kunye namandla amancinci angama-215 MPa.
Ukuba ukhangele umenzi kunye nomthengisi wemibhobho yensimbi edibana nomgangatho we-JIS G 3456, ngoko singumlingani owufunayo.Qhagamshelana nathi namhlanje kwaye siya kukuvuyela ukukunceda!
Ifanelekile kwii-diameters zangaphandle 10.5 mm - 660.4 mm (6A - 650A) (1/8B - 26B).
U-A no-B ziindlela ezimbini zokubonisa i-diameter yegama kumgangatho waseJapan.Ngokukodwa, u-A uhambelana ne-DN, ngelixa u-B ehambelana ne-NPS.
I-JIS G 3456 STPT 370 inokuveliswa ngokusebenzisa iengenamthungoinkqubo yokuvelisa okanye iukuwelda ukuxhathisa kombane(ERW) inkqubo.
Inkqubo yokuvelisa iphinda ihambelane neendlela ezahlukeneyo zokugqiba ukujamelana neendawo ezahlukeneyo zokusetyenziswa.
| Uphawu lwebakala | Uphawu lwenkqubo yokuvelisa | |
| Inkqubo yokwenziwa kwemibhobho | Indlela yokugqiba | |
| I-JIS G 3456 STPT370 | Ngaphandle komthungo: S | Igqityiwe ngokushushu: H Kubanda kugqityiwe: C |
| Ukuxhathisa kombane okudityanisiweyo: E Impundu idityanisiwe: B | Igqityiwe ngokushushu: H Kubanda kugqityiwe: C Njengoko ukuxhathisa kombane kufakwe iwelded: G | |
I-STPT 370 kufuneka iphathwe ngobushushu.
1. Umbhobho wensimbi ongenamthungo ogqityiweyo ogqityiweyo: Njengoko wenziwe I-annealing yobushushu obuphantsi okanye i-normalizing ingasetyenziswa njengoko kufuneka;
2. Umbhobho wensimbi ongenamthungo ogqityiweyo obandayo: I-annealing yobushushu obuphantsi okanye i-normalizing;
3. Umbhobho wentsimbi odityanisiweyo ogqityiweyo oshushu ogqityiweyo: Njengoko wenziwe I-annealing yobushushu obuphantsi okanye i-normalizing ingasetyenziswa njengoko kufuneka;
4. Ukuchasana kombane okubandayo okugqityiweyo okudityanisiweyo kunye Njengokumelana nombane welded steel pipe: Ukushisa okuphantsi kwe-annealing okanye ukuqhelekileyo.
| Uphawu lwebakala | C | Si | Mn | P | S |
| I-JIS G 3456 STPT370 | 0.25% ubukhulu | 0.10 - 0.35% | 0.30 - 0.90% | 0.035% ubukhulu | 0.035% ubukhulu |
Ukuba kuyimfuneko, izinto ezongezelelweyo zingongezwa.
Amandla okuqina, iNqaku lokuZivuza okanye uQinisekiso loQinisekiso, kunye nokwandiswa
Ipropati yoKutyabeka
Ifanelekile imibhobho enobubanzi obungaphandle obungaphezulu kwe-60.5 mm.
Lo mzekelo ubekwe phakathi kwamaqonga amabini kwaye ucandwe.Xa umgama phakathi kwamacwecwe amabini ufikelelaH, akukho zintanda kumphezulu we-specimen yombhobho wensimbi.
H = 1.08t/(0.08+ t/D)
н: umgama phakathi kweeplatens (mm);
t: ubukhulu bodonga lombhobho (mm);
D: ngaphandle kobubanzi bombhobho (mm);
Ukubanda
Ifanelekile kwimibhobho yensimbi kunye nobubanzi obungaphandle be-60.5 mm okanye ngaphantsi.
Xa umboniso ugobile malunga ne-mandrel ukuya kwi-radius yangaphakathi ka-6 ububanzi obungaphandle bombhobho, i-specimen ihlolwe kwaye akukho zintanda zifunyenwe.
| Ubukhulu bodonga lwegama | Inombolo yeShedyuli : Sch | |||||||||
| 10 | 20 | 30 | 40 | 60 | 80 | 100 | 120 | 140 | 160 | |
| Ubuncinci boxinzelelo lovavanyo lwe-hydraulic, iMpa | 2.0 | 3.5 | 5.0 | 6.0 | 9.0 | 12 | 15 | 18 | 20 | 20 |
Xa i-diameter yangaphandle kunye nobukhulu bodonga lombhobho wentsimbi ayibobukhulu obuqhelekileyo, ezi ndlela zilandelayo zingasetyenziselwa ukumisela ibakala elifanelekileyo lokuchazwa:
Okokuqala, khetha ibakala leshedyuli eliqhelekileyo elikufutshane nobungakanani obungalinganiyo;okwesibini, misela ibakala lokubala ngokubala ixabiso le-P.
Kuzo zombini iindlela, ixabiso elincinci kufuneka likhethwe njengebakala lokugqibela lenkcazo.
P = 2st/D
P: uxinzelelo lovavanyo (MPa);
t: ubukhulu bodonga lombhobho (mm);
D: ngaphandle kobubanzi bombhobho (mm);
s: 60% yexabiso eliphantsi elichaziweyo lenqaku lesivuno okanye ubungqina boxinzelelo;
Iindlela eziqhelekileyo zovavanyo ezingonakalisi zibandakanya uvavanyo lwe-ultrasonic (UT) kunye novavanyo lwangoku lwe-eddy (ET).
Xa usenza uhlolo lwe-ultrasonic, ireferensi kufuneka yenziwe kwi-JIS G 0582, kwaye xa umphumo wokuhlola ulingana okanye udlula umgangatho wokubhekisela kwiklasi ye-UD, kuthathwa njengokungaphumeleli.
Xa usenza uhlolo lwangoku lwe-eddy, ireferensi kufuneka yenziwe kwi-JIS G 0583. Xa isiphumo sokuhlolwa silingana okanye sidlula umgangatho wereferensi yeklasi ye-EY, ithathwa njengengafanelekanga.
Imilinganiselo esemgangathweni kunye nobukhulu beendonga kuluhlu lwe-10.5 mm ukuya kwi-660.4 mm zidweliswe kwi-JIS G 3456, eyi-.itafile yentsimbi yombhobho wobunzima kunye neshedyuli ehambelanayo No.
IShedyuli ye-10,IShedyuli 20,IShedyuli 30,Ishedyuli 40,IShedyuli 60,IShedyuli 80,IShedyuli ye-100,IShedyuli ye-120,IShedyuli 140,IShedyuli 160.
Ukususela ekusekweni kwayo ngo-2014,Intsimbi yeBotopuye waba ngumthengisi ohamba phambili we-carbon steel pipe eMntla China, owaziwa ngenkonzo ebalaseleyo, iimveliso ezikumgangatho ophezulu, kunye nezisombululo ezibanzi.
Inkampani inikezela ngeendidi zemibhobho ye-carbon steel kunye nemveliso ehambelana nayo, kubandakanywa i-seamless, i-ERW, i-LSAW, kunye ne-SSAW ipayipi yensimbi, kunye nomgca opheleleyo wokufakelwa kwemibhobho kunye neeflange.Iimveliso zayo ezikhethekileyo zikwabandakanya i-alloys ephezulu kunye ne-austenitic stainless steels, elungiselelwe ukuhlangabezana neemfuno zeeprojekthi ezahlukeneyo zepayipi.
Nceda uzive ukhululekile ukuqhagamshelana nathi kwaye siya kukuvuyela ukuphendula imibuzo yakho.
