Kunzwisisa Kukosha kwePaipi yeGasi Yemhando Yepamusoro: Pombi yeX42 SSAW, ASTM A139 uye EN10219
X42SSAWpombiimhando yepombi yegesi yechisikigo inowanzoshandiswa muindasitiri yemafuta negesi. Inogadzirwa uchishandisa nzira yekuwedera arc inonyungudutswa inogadzira mapaipi emhando yepamusoro uye anogara kwenguva refu. Pombi yeX42 SSAW ine simba rakawanda uye ine hunhu hwakanaka hwemakemikari, zvichiita kuti ive yakakodzera zvinodiwa zvekutakura gasi rechisikigo. Kudzivirira kwayo ngura nekutsemuka kunoita kuti ive sarudzo yekutanga kumapurojekiti ekuvaka mapaipi.
ASTM A139ndiyo imwe nzira yakakosha yemapombi egasi rechisikigo. Iyi nzira inosanganisira pombi yesimbi yemagetsi yakasungirirwa (arc) yakatwasuka kana yakasungirirwa inoshandiswa kutakura magasi, utsi, mvura nezvimwe zvinwiwa. Pombi yeASTM A139 inozivikanwa nekuvimbika kwayo uye kushanda kwayo kwenguva refu mumamiriro ekushanda akaomarara. Mapombi aya akagadzirwa kuti agone kutsungirira kumanikidzwa kwakanyanya uye kushanduka-shanduka kwekushisa, zvichiita kuti ave akakodzera kutakura nekushandisa gasi rechisikigo.
| Zvakajairika | Giredhi resimbi | Kuumbwa kwemakemikari | Zvivako zvekusunga | Kuedza kweCharpy Impact uye Kuedza kweDrop Weight Tear Test | |||||||||||
| C | Mn | P | S | Ti | Zvimwe | CEV4)（%） | Simba reRt0.5 Mpa | Simba rekusimbisa reRm Mpa | A% L0=5.65 √ Kureba kweS0 | ||||||
| zvakanyanya | zvakanyanya | zvakanyanya | zvakanyanya | zvakanyanya | zvakanyanya | zvakanyanya | miniti | zvakanyanya | miniti | zvakanyanya | |||||
| API Spec 5L (PSL2) | B | 0.22 | 1.20 | 0.025 | 0.015 | 0.04 | Kune ese magiredhi esimbi: Pane sarudzo yekuwedzera Nb kana V kana chero musanganiswa yavo, asi Nb+V+Ti ≤ 0.15%, uye Nb+V ≤ 0.06% yegiredhi B | 0.25 | 0.43 | 241 | 448 | 414 | 758 | Kuverengerwa zvichienderana ne fomura inotevera: e=1944·A0.2/U0.9 A: Kuyambuka-kuparadzanisa nzvimbo yemuenzaniso mu mm2 U: Simba shoma rekudhonza rakatarwa mu Mpa | Kune bvunzo dzinodiwa uye bvunzo dzesarudzo. Kuti uwane rumwe ruzivo, ona chiyero chekutanga. |
| X42 | 0.22 | 1.30 | 0.025 | 0.015 | 0.04 | 0.25 | 0.43 | 290 | 496 | 414 | 758 | ||||
| X46 | 0.22 | 1.40 | 0.025 | 0.015 | 0.04 | 0.25 | 0.43 | 317 | 524 | 434 | 758 | ||||
| X52 | 0.22 | 1.40 | 0.025 | 0.015 | 0.04 | 0.25 | 0.43 | 359 | 531 | 455 | 758 | ||||
| X56 | 0.22 | 1.40 | 0.025 | 0.015 | 0.04 | 0.25 | 0.43 | 386 | 544 | 490 | 758 | ||||
| X60 | 0.22 | 1.40 | 0.025 | 0.015 | 0.04 | 0.25 | 0.43 | 414 | 565 | 517 | 758 | ||||
| X65 | 0.22 | 1.45 | 0.025 | 0.015 | 0.06 | 0.25 | 0.43 | 448 | 600 | 531 | 758 | ||||
| X70 | 0.22 | 1.65 | 0.025 | 0.015 | 0.06 | 0.25 | 0.43 | 483 | 621 | 565 | 758 | ||||
| X80 | 0.22 | 1.65 | 0.025 | 0.015 | 0.06 | 0.25 | 0.43 | 552 | 690 | 621 | 827 | ||||
| Si Mn+Cu+Cr Ndini Aihwa V 1)CE(Pcm)=C+ 30 + 20 + 60 + 15 + 10 +58 | |||||||||||||||
| Mn Cr+Mo+V Ni+Cu 2)CE(LLW)= C + 6 + 5 + 15 | |||||||||||||||
EN10219chiyero cheEurope chinotsanangura mamiriro ehunyanzvi ekutumira zvikamu zvesimbi isina kugadzirwa nesimbi uye simbi yakacheneswa. Kunyangwe EN10219 isina kugadzirirwa mapaipi egasi rechisikigo, zvinodiwa zvayo zvakasimba zvekugara kwenguva refu, kurongeka kwehukuru uye hunhu hwemakanika zvinoita kuti ive sarudzo yakakodzera kune mamwe mapurojekiti emapaipi egasi. Kushandisa mapaipi anotevedzera EN10219 kunogona kuvandudza kusimba kwese uye hupenyu hwebasa resisitimu yako yekugovera gasi rechisikigo.
Kukosha kwekusarudza mapaipi egasi remhando yepamusoro hakufanirwe kutaurwa zvakanyanya. Mapaipi asina kunaka kana asina kunaka anogona kukonzera njodzi huru kunharaunda, kuchengetedzeka kwevanhu uye kuvimbika kwemafuta anowanikwa. Nokudaro, makambani egasi remhando yepamusoro, makambani emapaipi nevatariri vemapurojekiti vanofanira kukoshesa kushandiswa kwezvinhu zvepaipi zvakabvumidzwa uye zvagara zviripo zvakaita sepaipi yeX42 SSAW, ASTM A139 uye EN10219.
Muchidimbu,pombi yegasi rechisikigoKusarudzwa chinhu chakakosha pakugadzira mapaipi nekuvaka. Zvinhu zvakakosha pakufunga nezvemhando yepamusoro, zvakaita sekusimba kwezvinhu, kuramba ngura, uye kutevedzera mitemo yeindasitiri, zvinofanirwa kutungamira pakuita sarudzo. Nekusarudza mapaipi akavimbika uye ane mukurumbira, akadai sepaipi yeX42 SSAW, ASTM A139, uye EN10219, vane chekuita neizvi vanogona kuve nechokwadi chekuti zvivakwa zvekutakura gasi rechisikigo zvinogara kwenguva refu uye zvakachengeteka.
Chekupedzisira, zvakakosha kuti pave nekutanga kushandiswa kwemapaipi egasi rechisikigo emhando yepamusoro anosangana nezvinodiwa neindasitiri uye ane hunhu hwemakanika nemakemikari hunodiwa. Nekusarudza sarudzo dzakavimbika dzakadai sepaipi yeX42 SSAW, ASTM A139 uye EN10219, vashandi vepaipi vanogona kuve nechokwadi chekuti masisitimu avo ekugovera gasi rechisikigo anogara kwenguva refu uye akachengeteka.
