Ukusetyenziswa kunye noHlalutyo lwe-ASTM A1045 yeStructural Steel Pipe

I-ASTM ye-A1045 yeStructural Steel Pipengokuqhelekileyo isetyenziswa kwizinto eziphathekayo zepayipi yensimbi engenamthungo.Umbhobho wentsimbi ongenamthungo wahlulwe kwi-GB8162 kunye ne-GB8163, eyimigangatho emibini esetyenziswa ngokuqhelekileyo eChina.Nangona kunjalo, i-ASTM A1045Umbhobho weSimbi soLwakhiwoine-GB8162 kuphela, eyona nto isetyenziswa ngokuqhelekileyo kwimachining.

Umbhobho wensimbi we-ASTM A1045 ngumbhobho oqhelekileyo osetyenziswa ngokuqhelekileyo wekhabhoni ocinyiweyo kunye nombhobho wentsimbi opholileyo oneempawu ezilungileyo ezibanzi zoomatshini, ukuqina okuphantsi kunye nokuqhekeka ngokulula ngexesha lokucima kwamanzi.Amalungu amancinci kufuneka acinywe kwaye afudumale, kwaye iindawo ezinkulu kufuneka ziqheleke, ikakhulu zisetyenziselwa ukwenza iindawo ezinamandla ezihambayo, ezifana ne-turbine impeller kunye ne-compressor piston.I-shaft, igiya, i-rack, i-worm, njl.

ASTM1045 carbon steel pipeiqulethe malunga ne-0.45% yekhabhoni, inani elincinci le-manganese, i-silicon, njl., kunye ne-sulfure ephantsi kunye nomxholo we-phosphorus we-high-quality carbon structural steel pipe.

Ubushushu bonyango lobushushu: ukulinganisa i-850, ukucima i-840, ukutshisa i-600. I-ASTM1045 yensimbi yintsimbi ye-carbon structural steel ephezulu kunye nobunzima obuphantsi kwaye kulula ukuyinqumla.Isikhunta sisoloko sisetyenziswa njengeetemplates, izikhonkwane, iintsika zesikhokelo, njl., kodwa kufuneka kuphathwe ubushushu.1. Insimbi ye-ASTM1045 ifanelekile ukuba ubunzima bayo bukhulu kune-HRC55 (ukuya kwi-HRC62) emva kokucima nangaphambi kokuvutha.Obona bunzima buphezulu kwisicelo esisebenzayo yi-HRC55 (i-high-frequency quenching HRC58).2. Inkqubo yokushisa ukushisa kwe-carburizing kunye nokucima ayiyi kusetyenziswa kwi-ASTM1045 steel.Amacandelo acinyiweyo kunye nobushushu aneempawu ezilungileyo ezibanzi zomatshini kwaye zisetyenziswa ngokubanzi kwiindawo ezahlukeneyo ezibalulekileyo zesakhiwo, ngokukodwa ezo zidibeneyo, iibholiti, iigiya kunye neeshafts ezisebenza phantsi kwemithwalo etshintshanayo.Nangona kunjalo, ubunzima bomphezulu buphantsi kwaye abukwazi ukumelana.Ukuqina komphezulu wamalungu kungaphuculwa ngokucima kunye nokuthambisa + ukucima ubuso.Unyango lwe-Carburizing lusetyenziswa ngokubanzi kumthwalo onzima wokuxhathisa umphezulu we-abrasion kunye nokuchasana kwempembelelo engundoqo, kwaye ukuxhathisa kwe-abrasion kuphezulu kunoko kucima kunye nokutshisa + ukucinywa komphezulu.Umxholo wayo wekhabhoni ophezulu ngu-0.8-1.2%, kwaye ingundoqo yayo ngokuqhelekileyo i-0.1-0.25% (0.35% kwiimeko ezikhethekileyo).Emva konyango lobushushu, umphezulu unokufumana ubunzima obuphezulu kakhulu (HRC58-62), kwaye ingundoqo inobunzima obuphantsi kunye nokumelana nempembelelo.Ukuba i-ASTM1045 insimbi isetyenziselwa ukungcwatywa kwe-carburizing, i-martensite enzima kunye ne-brittle iya kubonakala kumbindi emva kokucima, ilahlekelwe yinzuzo yonyango lwe-carburizing.Okwangoku, umxholo wekhabhoni wezinto ezithatha inkqubo ye-carburizing ayiphezulu, kwaye amandla angundoqo anokufikelela phezulu kakhulu nge-0.30%, enqabileyo ekusebenziseni.I-0.35% ayizange ibone nayiphi na imizekelo, kwaye yaziswa kuphela kwiincwadi zezifundo.Inkqubo yokucima kunye nokutshisa + ukucinywa komphezulu we-frequency ephezulu ingasetyenziswa, kwaye ukuxhathisa ukunxitywa kubi kancinci kunoko kungcwatywa.Inkqubo yonyango yokushisa ekhuthazwayo ye-45 yensimbi echazwe kwi-GB / T699-1999 standard yi-850 ℃ normalizing, 840 ℃ quenching kunye ne-600 ℃ tempering.Iipropati eziphunyeziweyo zezokuba amandla esivuno yi ≥ 355MPa.Amandla e-tensile ye-45 yensimbi echazwe kwi-GB / T699-1999 esemgangathweni yi-600MPa, amandla okuvelisa i-355MPa, i-elongation yi-16%, ukunciphisa indawo yi-40%, kunye nempembelelo yamandla yi-39J.