Fahamka labalaab oo labajibbaaran oo ah tuubbada birta ee salka ku jirta astm a252
Hordhac:
Bulshada casriga ah, gaadiidka wax ku oolka ah ee cabitaannada iyo gaasaska ayaa muhiim u ah warshadaha badan. Mid ka mid ah qodobbada ugu muhiimsan ee lagu hubinayo hawlgalka jilicsan eeadaNidaamka khadka toosanayaa dooranaya tuubooyinka saxda ah. Ikhtiyaariyada kala duwan ee la heli karo, S235 JR ruujinta tuubbada birta lagu kalsoonaan karo awgeed tayada sare. Blog-kani wuxuu ujeedadiisu tahay inuu sahamiyo faa'iidooyinka isticmaalka S235 JR ruushka jr spime ah oo lagu tuuro nidaamyo tuubooyin ah, iyadoo diiradda lagu saarayo qaab dhismeedka is-wareejinta.
Hantida farsamada
| Fasalka birta | xoogga ugu yar | Awooda TSensile | Ugu yaraan dhererka | Tamarta saameynta ugu yar | ||||
| Dhumuc cayiman | Dhumuc cayiman | Dhumuc cayiman | heerkulka tijaabada ee | |||||
| <16 | > 16 boqolkiiba | <3 | ≥30 | ≤40 | -20 ℃ | 0 ℃ | 20 ℃ | |
| S235jrh | 235 | 225 | 360-510 | 360-510 | 24 | - | - | 27 |
| S275j0h | 275 | 265 | 430-580 | 410-560 | 20 | - | 27 | - |
| S275j2h | 27 | - | - | |||||
| S355j0h | 365 | 345 | 510-680 | 470-630 | 20 | - | 27 | - |
| S355j2h | 27 | - | - | |||||
| S355k2h | 40 | - | - | |||||
Ka kooban kiimikada
| Fasalka birta | Nooca de-oc-ka a | % cufnaanta, ugu badnaan | ||||||
| Magaca steel | Lambarka birta | C | C | Si | Mn | P | S | Nb |
| S235jrh | 1.0039 | FF | 0,17 | - | 1,40 | 0,040 | 0,040 | 0.009 |
| S275j0h | 1.0149 | FF | 0,20 | - | 1,50 | 0,035 | 0,035 | 0,009 |
| S275j2h | 1.0138 | FF | 0,20 | - | 1,50 | 0,030 | 0,030 | - |
| S355j0h | 1.0547 | FF | 0,22 | 0,55 | 1,60 | 0,035 | 0,035 | 0,009 |
| S355j2h | 1.0576 | FF | 0,22 | 0,55 | 1,60 | 0,030 | 0,030 | - |
| S355k2h | 1.0512 | FF | 0,22 | 0,55 | 1,60 | 0,030 | 0,030 | - |
| a. Habka daahsoon ee loo yaqaan 'chox' ayaa loo qoondeeyay sida soo socota: FF: Birta si buuxda u dhintey walxaha ku dhaca nitrogen-ka qaddarka ku filan ee lagu xidho nitrogen-ka la heli karo (tusaale ahaan Min. 0,020% wadarta al ama 0,015% isku-darka al). b. Qiimaha ugu badan ee nitrogen ma quseeyo hadii ka kooban kiimikada ay muujiso ugu yaraan maadooyinka ugu yar ee ah 0,020% iyadoo ugu yar ee al / n cabirkiisu yahay 2: 1, ama haddii ay ku filan yihiin waxyaabo kale oo ku filan oo kale. Waxyaabaha n-majaajillada ah waa in lagu diiwaangeliyaa dukumintiga kormeerka. | ||||||||
Imtixaanka Hydrostatic
Dherer kasta oo tuubbada ah waxaa tijaabinaya soo-saaraha si uu u soo saaro cadaadis hawo-mareenka ah oo ku soo saari doona tuubbada gidaarka ee walbahaarka aan ka yarayn 60% xoogga dhalidda ugu yar ee ugu yar ee heerkulka qolka. Cadaadiska waxaa lagu go'aamin doonaa isleegtan soo socda:
P = 2st / d
Kala duwanaanshaha la oggol yahay ee culeyska iyo cabbirrada
Dherer kasta oo tuubbada ah ayaa loo miisaamaa si gooni gooni ah oo miisaankeedana kama duwana in ka badan 10% in ka badan ama 5.5% hoostiisa miisaankiisa, oo lagu xisaabiyo iyadoo la adeegsanayo dhererkeeda iyo miisaankeeda dhererkeeda
Dhexroorkii dibaddu kuma kala duwanaan doono in ka badan ± 1% laga soo bilaabo dhexroorkii dibedda ee dibedda loo cayimay
Dhumucda darbiga dhibic kasta ma aha wax ka badan 12.5% oo ka hooseeya dhumucda darbiga ee la cayimay
1. Fahmitaanka S235 Jr spipe bir ah:
S235 JR ruushka tuubada birtawaa tuubooyin dhuuban oo qunyar ah oo loo isticmaalo nidaamyada dhuumaha. Waxay ka samaysan yihiin bir tayo sare leh oo u hoggaansanaanta heerarka caalamiga ah, hubinta cimri dherer iyo xoog sare. Hawsha waxsoosaarka ayaa ku lug leh sameynta wareega ugu sareeya ee bir bir ah oo joogto ah, kaas oo markaa loo rogo dhererka la doonayo. Farsamadan dhismaha ayaa siiya tuubooyin leh faa iidooyin muhiim ah oo ka badan tuubooyinka isku xidhka tooska ah.
2. Faa'iidooyinka ku saabsan tuubbada tuubbada welwelka leh:
Dhismaha weldes ee loo yaqaan 'spial' Marka hore, toldhigga joogtada ah ee al-waqooyiga ee joogtada ah ee loo yaqaan 'Ears Weld's Well Weld Seviolce waxay kor u qaadaa daacadnimada qaabdhismeedka ee tuubbada, taasoo ka dhigeysa mid aad u adkaysata cadaadiska gudaha iyo dibedda. Qaab-dhismeedkani wuxuu sidoo kale hubiyaa xitaa xayiraadda xamuulka, yareynta halista tuubbada tuubbada. Intaas waxaa sii dheer, qaabka wareega ee tuubbada ayaa tirtiray baahida loo qabo xoojin gudaha ah, taas oo markaa kahortagaya isku-darka qulqulka iyo yareynta luminta cadaadiska inta lagu jiro wareejinta dareeraha. Dusha sare ee jajaban ee tuubbada wareega ee jahawareerka ayaa yaraanaya halista daadadku waxayna wanaajisaa amniga iyo hufnaanta nidaamka tuubbada.
3. Kordhinta cimri dhererka iyo kartida:
S235 JR ruushka Jr steel bir ah ayaa laga helayaa cimri dherer sare oo tayo sare leh oo tayo sare leh. Waxay u adkaysatayaan hudheelka, kala goynta iyo xaaladaha cimilada ba'an, iyaga oo ka dhigaysa inay ku habboon yihiin codsiyo kala duwan oo ay ka mid yihiin gaadiidka saliida iyo gaaska, nidaamyada biyaha iyo mashaariicda kaabayaasha. Farsamada u ah tuubooyinkan waxay u oggolaaneysaa in si sahlan loogu habeeyo si ay u buuxiyaan shuruudaha mashruuca gaarka ah. Intaa waxaa sii dheer, way fududahay in la rakibo oo la sii wado, oo lagu daro rafcaankooda iyo gacan ka geysashada natiijada ka dhalata nidaam aad u wax ku ool ah oo waqti badan.
4. Faa'iidooyinka deegaanka iyo joogtaynta:
U beddelashada S235 JR copipe bir ee ku jira nidaamyada tuubbada ayaa waliba keeni kara dheefaha deegaanka ee weyn. Noloshooda dheer iyo iska caabbinta xaalufinta ayaa yareynaysa baahida loo qabo beddelaad isdaba joog ah, taasoo dhalisay qiiqa kaarboonka hoose iyo jiilka qashinka yar. Intaa waxaa sii dheer, dib-u-soo-saaridda birta ayaa ka dhigaya tuubooyinkan ikhtiyaar waara oo safka ku jira mabaadi'da dhaqaalaha wareega. Adigoo adeegsanaya tuubooyinka S235 ee S235 JR ee birta, warshadaha ayaa xaqiijin kara hab-wanaagsan oo jawi wanaagsan oo masuuliyad leh oo lagu raro cabitaannada, taasna kor u qaadida mustaqbal cagaaran.
Gunaanad:
Adeegsiga S235 JR ruushka Jr compipe birta ee nidaamyada tuubbooyinka ayaa bixiya faa iidooyin badan oo muhiim ah, oo ay kujirto cimri dherer, nabadgelyo iyo hufnaan iyo hufnaan. Qaab-dhismeedka qunyar socodka ah wuxuu hubiyaa sharafteeda qaabdhismeedka wuxuuna siiyaa biyo dareere ah oo lagu kalsoonaan karo ee warshadaha kala duwan. Adigoo ku daraya teknolojiyada horumarsan sida kuwan oo kale, waxaan wadnaa jidka loogu talagalay nidaamyada tuubooyinka ee waara iyo kuwa la isku halleyn karo.
