Molumo o Phahameng oa Pipe ea Tšepe Bakeng sa Merero ea Kaho
Standard | Kereiti ea tšepe | Likarolo tsa Lik'hemik'hale (%) | Thepa ea Tensile | Charpy(V notch) Teko ea Tšusumetso | ||||||||||
c | Mn | p | s | Si | Tse ding | Kotulo Matla(Mpa) | Matla a tšepe(Mpa) | (L0=5.65 √ S0 )Metsotso e Lebelo la ho Otlolla (%) | ||||||
max | max | max | max | max | min | max | min | max | D ≤ 168.33mm | D ~ 168.3 limilimithara | ||||
GB/T3091 -2008 | Q215A | ≤ 0.15 | 0.25 < 1.20 | 0.045 | 0.050 | 0.35 | Ho eketsa NbVTi ho latela GB/T1591-94 | 215 | 335 | 15 | > 31 | |||
Q215B | ≤ 0.15 | 0.25-0,55 | 0.045 | 0.045 | 0.035 | 215 | 335 | 15 | > 31 | |||||
Q235A | ≤ 0.22 | 0.30 < 0.65 | 0.045 | 0.050 | 0.035 | 235 | 375 | 15 | >26 | |||||
Q235B | ≤ 0.20 | 0.30 ≤ 1.80 | 0.045 | 0.045 | 0.035 | 235 | 375 | 15 | >26 | |||||
Q295A | 0.16 | 0.80-1,50 | 0.045 | 0.045 | 0.55 | 295 | 390 | 13 | >23 | |||||
Q295B | 0.16 | 0.80-1,50 | 0.045 | 0.040 | 0.55 | 295 | 390 | 13 | >23 | |||||
Q345A | 0.20 | 1.00-1.60 | 0.045 | 0.045 | 0.55 | 345 | 510 | 13 | >21 | |||||
Q345B | 0.20 | 1.00-1.60 | 0.045 | 0.040 | 0.55 | 345 | 510 | 13 | >21 | |||||
GB/ T9711- 2011 (PSL1) | L175 | 0.21 | 0.60 | 0.030 | 0.030 |
Ka boikhethelo ho kenyelletsa e 'ngoe ea likarolo tsa NbVTi kapa motsoako ofe kapa ofe oa tsona | 175 | 310 | 27 | E le 'ngoe kapa tse peli tsa toughness indexof matla a tšusumetso le sebaka sa ho kuta se ka khethoa. Bakeng sa L555, bona maemo. | ||||
L210 | 0.22 | 0.90 | 0.030 | 0.030 | 210 | 335 | 25 | |||||||
L245 | 0.26 | 1.20 | 0.030 | 0.030 | 245 | 415 | 21 | |||||||
L290 | 0.26 | 1.30 | 0.030 | 0.030 | 290 | 415 | 21 | |||||||
L320 | 0.26 | 1.40 | 0.030 | 0.030 | 320 | 435 | 20 | |||||||
L360 | 0.26 | 1.40 | 0.030 | 0.030 | 360 | 460 | 19 | |||||||
L390 | 0.26 | 1.40 | 0.030 | 0.030 | 390 | 390 | 18 | |||||||
L415 | 0.26 | 1.40 | 0.030 | 0.030 | 415 | 520 | 17 | |||||||
L450 | 0.26 | 1.45 | 0.030 | 0.030 | 450 | 535 | 17 | |||||||
L485 | 0.26 | 1.65 | 0.030 | 0.030 | 485 | 570 | 16 | |||||||
API 5L (PSL 1) | A25 | 0.21 | 0.60 | 0.030 | 0.030 | Bakeng sa tšepe ea sehlopha sa B, Nb + V ≤ 0,03%; bakeng sa tšepe ≥ grade B, boikhethelo ho eketsa Nb kapa V kapa bona motsoako, le Nb+V+Ti ≤ 0.15% | 172 | 310 | (L0=50.8mm) ho ba e baloa ho latela foromo e latelang: e=1944·A0 .2/U0 .0 A: Sebaka sa sampole ho mm2 U: Matla a fokolang a boletsoeng ho Mpa | Ha ho letho kapa leha e le efe kapa bobeli ba tšusumetso matla le ho kuta sebaka se hlokoa e le mokhoa oa ho thatafala. | ||||
A | 0.22 | 0.90 | 0.030 | 0.030 | 207 | 331 | ||||||||
B | 0.26 | 1.20 | 0.030 | 0.030 | 241 | 414 | ||||||||
X42 | 0.26 | 1.30 | 0.030 | 0.030 | 290 | 414 | ||||||||
X46 | 0.26 | 1.40 | 0.030 | 0.030 | 317 | 434 | ||||||||
X52 | 0.26 | 1.40 | 0.030 | 0.030 | 359 | 455 | ||||||||
X56 | 0.26 | 1.40 | 0.030 | 0.030 | 386 | 490 | ||||||||
X60 | 0.26 | 1.40 | 0.030 | 0.030 | 414 | 517 | ||||||||
X65 | 0.26 | 1.45 | 0.030 | 0.030 | 448 | 531 | ||||||||
X70 | 0.26 | 1.65 | 0.030 | 0.030 | 483 | 565 |
Kenyelletso ea Sehlahisoa
Ho hlahisa liqubu tsa rona tsa boleng bo phahameng ba lipeipi tsa tšepe bakeng sa merero ea kaho, e etselitsoeng ho fihlela litlhoko tse thata tsa meaho ea sejoale-joale. E entsoe fekthering ea rona ea morao-rao Cangzhou, Profinseng ea Hebei, liphaephe tsa rona tsa lipeipi tsa tšepe li entsoe ka thepa e ntle ka ho fetisisa le theknoloji e tsoetseng pele. Ho tloha ha re theoa ka 1993, re ikemiselitse ho sebetsa hantle mme re bile moetapele oa indasteri, e nkang sebaka sa lisekoere-mithara tse 350,000 le thepa eohle ea RMB 680 milione.
Lithako tsa rona tsa lipeipi tsa tšepe li etselitsoe ho tšepahala le ho tšoarella, ho etsa hore e be tse loketseng bakeng sa mefuta e fapaneng ea lisebelisoa tsa kaho tse kang cofferdams. Tholoana e 'ngoe le e 'ngoe e kena ts'ebetsong e matla ea taolo ea boleng ho netefatsa hore e finyella litekanyetso tse phahameng ka ho fetisisa, ho u fa khotso ea kelello bakeng sa morero oa hau oa kaho. Re na le basebetsi ba nang le tsebo ba 680, re khona ho sebetsana le merero ea boholo leha e le bofe, ho fana ka sehlahisoa se sa finyelleng litebello feela, empa se se feta.
Ho sa tsotellehe hore na u sebetsa morerong o moholo oa mehaho kapa morero o monyenyane oa kaho, liqubu tsa rona tsa boleng bo phahameng ba lipeipi tsa tšepe ke tharollo e phethahetseng bakeng sa litlhoko tsa hau. Tšepa lilemo tsa rona tsa boiphihlelo le boitlamo ba boleng ho u fa lisebelisoa tse ntlehali bakeng sa projeke ea hau ea kaho. Khetha ronaqubu ea phala ea tšepebakeng sa matla a bona, ts'epahalo le ts'ebetso ea bona, 'me u bone phapang eo thepa ea boleng bo holimo e ka e etsang morerong oa hau oa kaho.
Molemo oa Sehlahisoa
1. Tse tsebahalang ka ho tšepahala le matla a tsona, liphaephe tsa lipeipi tsa tšepe li loketse mefuta e fapaneng ea likopo tsa kaho, tse kang cofferdams.
2. Moralo oa bona o tiileng oa sebopeho o netefatsa polokeho le botsitso tse hlokahalang bakeng sa metheo le mesebetsi e meng ea meralo.
3. Litšepe tsa boleng bo phahameng tse sebelisoang ha ho etsoa liphaephe tsa lipeipi tsa tšepe li ba nolofalletsa ho mamella meroalo e meholo le ho hanela maemo a tikoloho a kang ho senya le ho sisinyeha ha mobu.
4. Mekhoa ea ho etsa tlhahiso e sebelisoang ke lik'hamphani tse kang tsa rona, tse Cangzhou, Profinseng ea Hebei, li etsa bonnete ba hore qubu e 'ngoe le e' ngoe e finyella litekanyetso tse tiileng tsa boleng, ho fa borakonteraka le baenjiniere khotso ea kelello.
Khaello ea lihlahisoa
1. E 'ngoe ea litaba tse ka sehloohong ke litšenyehelo; tšepe ea boleng bo holimo e theko e boima, e ka etsang hore tekanyetso ea morero e eketsehe.
2. Ts'ebetso ea ho kenya e ka ba e rarahaneng, e hlokang lisebelisoa tse khethehileng le mosebetsi o nang le tsebo, tse ka eketsang nako ea morero.
3. Le hoja liphaephe tsa tšepe li ntse li tšoarella ka nako e telele, li ka hlaseloa habonolo ke mefuta e itseng ea kutu haeba li sa tšoaroe kapa li sa hlokomeloe hantle.
Kopo
Lefatšeng le ntseng le tsoela pele la kaho, khetho ea thepa e na le phello e kholo katlehong le nako e telele ea morero. Ntho e 'ngoe e ipakileng e le ea bohlokoa ke liphaephe tsa tšepe tsa boleng bo holimo. Lithako tsena tsa lipeipi tsa tšepe li entsoe ka hloko 'me li bohlokoa bakeng sa mefuta e sa tšoaneng ea kaho, haholo-holo ho theheng motheo o tiileng le ho netefatsa botšepehi ba sebopeho.
E entsoe ka thepa ea boleng bo holimo le theknoloji e tsoetseng pele,phala ea tšepeliqubu ke khetho e tšepahalang bakeng sa morero ofe kapa ofe oa kaho. Moralo oa bona o matla oa sebopeho o molemo haholo lits'ebetsong tse kang cofferdam, moo botsitso le polokeho li leng bohlokoa. Liqubu tsena li khona ho mamella meroalo e boima le maemo a thata a tikoloho, a li etsa khetho e ratoang ke baenjiniere le borakonteraka.
Qetellong, ho sebelisa liphaephe tsa tšepe tsa boleng bo phahameng ke habohlokoa bakeng sa katleho ea morero oa kaho. Ho tšepahala ha bona, matla le lits'ebetso tse tsoetseng pele tsa tlhahiso li li etsa hore e be tse loketseng merero ea metheo le meaho. Ha re ntse re tsoela pele ho qapa le ho ntlafatsa lihlahisoa tsa rona, re lula re ikemiselitse ho tšehetsa indasteri ea kaho ka thepa e ntle ka ho fetisisa. Khetha liphaephe tsa rona tsa tšepe bakeng sa morero oa hau o latelang 'me u bone phapang ea boleng le ts'ebetso.
LBH
Q1: Lithako tsa lipeipi tsa tšepe ke eng?
Lithako tsa lipeipi tsa tšepe ke mehaho ea cylindrical e entsoeng ka tšepe ea boleng bo phahameng, e etselitsoeng ho khannoa ka botebo fatše ho fana ka tšehetso ea motheo. Li etsoa ka theknoloji e tsoetseng pele ho etsa bonnete ba hore li finyella litlhoko tse thata tsa merero e fapaneng ea kaho.
Q2: Ke hobane'ng ha u khetha liqubu tsa lipeipi tsa tšepe bakeng sa kaho?
Lithako tsa lipeipi tsa tšepe li tsejoa ka matla le ho tšoarella ha tsona. Moralo oa tsona o matla oa sebopeho o li etsa hore li tšoanelehe bakeng sa li-cofferdam moo botsitso bo leng bohlokoa haholo. Liqubu tsena li ka mamella meroalo e boima le maemo a thata a tikoloho, e leng se etsang hore e be khetho e tšepahalang bakeng sa metheo le merero e meng ea meralo.
Q3: Khamphani ea hau e hokae?
Khamphani ea rona e thehiloe ka 1993 mme e fumaneha Cangzhou City, Profinseng ea Hebei. E akaretsa sebaka sa lisekoere-mithara tse 350,000, e na le thepa eohle ea li-yuan tse limilione tse 680, 'me hajoale e na le basebetsi ba 680. Re ikemiselitse ho hlahisa liphaephe tsa tšepe tsa boleng bo holimo tse finyellang litlhoko tsa bareki.
Q4: U nka mehato efe ea netefatso ea boleng?
Re tsepamisa maikutlo ho boleng boemong bo bong le bo bong ba tlhahiso. Lithako tsa rona tsa lipeipi tsa tšepe li etsoa ka thepa ea boleng bo holimo ka ho fetisisa 'me li sebelisa theknoloji e tsoetseng pele ho etsa bonnete ba hore lia tšepahala. Ts'ebetso ea rona e thata ea taolo ea boleng e netefatsa hore lihlahisoa tsa rona li fihlela maemo a indasteri le litlhaloso tsa bareki.