Shandong Weichuan Metal Prodducts Co., Ltd.

I-S355j2h yentsimbi engenamthungo yomenzi wewaranti yokuthengisa

Inkcazelo emfutshane:

I-S355J2 yimveliso yentsimbi yolwakhiwo oluqhelekileyo lwaseYurophu. Ezinye izinto ezikuluhlu olufanayo, njenge-s355jo, njl.


Iinkcukacha zeMveliso

Iithegi zeMveliso

Inkcazo

I-S355J2 iya kuhambelana ne-en10025-2: 2004 (umgangatho omdala (en10025: 1990)

C: ≤0.22; Si: ≤0.55; Mnu: ≤1,60; P: ≤0.025; S: ≤0.025; Cu: ≤0.55;

-20℃: ≥27.

(Mpa): ≤16mm: ≥355: 16—40: ≥345; 40—63: ≥335; 63—80: ≥325;

80—100: ≥315; 100—150: 295; 150—200: ≥285; 200—250: ≥275; 250—400:≥265.

S355j2h seamless steel pipe manufacturer warranty sales

I-Hot rolling, i-controlled rolling, i-normalizing, njl.

I-S355jo yimveliso yentsimbi yolwakhiwo oluqhelekileyo lwaseYurophu.

I-S355jo isebenzisa umgangatho we-en10025-2: 2004 (umgangatho omdala (en10025: 1990)
Ubushushu bokucima umbhobho wentsimbi osezantsi ngu-A3 + (30 ~ 50) ℃. Enyanisweni, umda ophezulu uthathwa ngokubanzi. Ukushisa okuphezulu kokucima kunokunyusa isantya sokufudumeza kombhobho wensimbi ophantsi, ukunciphisa i-oxidation yomhlaba kunye nokuphucula ukusebenza kakuhle. Ukuze i-homogenize i-austenite ye-workpiece, ixesha elaneleyo lokubamba liyafuneka. Ukuba ukulayishwa kwesithando somlilo kukhulu, ixesha lokubamba lifuna ukwandiswa ngokufanelekileyo. Ngaphandle koko, ubunzima obunganelanga bunokwenzeka ngenxa yokufudumeza okungalinganiyo. Nangona kunjalo, ukuba ixesha lokubamba lide kakhulu, ukungonakali kokutya okuziinkozo kunye ne-decarburization enzulu ye-oxidation iya kuvela nayo, eya kuchaphazela umgangatho wokucima. Sikholelwa ukuba isixa-mali sokuhlawula sikhulu kunoko kuchazwe kumaxwebhu enkqubo, ukufudumeza kunye nexesha lokubamba kufuneka kwandiswe nge-1/5.

Ngenxa yokuba ukuqina kombhobho wentsimbi wobushushu obuphantsi kuphantsi, isisombululo sebrine esiyi-10% esinezinga lokupholisa eliphezulu siya kusetyenziswa. Umsebenzi womsebenzi kufuneka ucinywe ngokucokisekileyo emva kokungena emanzini, kodwa ungabandi kakuhle. Ukuba i-45# echanekileyo umbhobho wentsimbi upholiswe ngokucokisekileyo emanzini anetyuwa, i-workpiece inokuqhekeka, okubangelwa ukuguqulwa ngokukhawuleza kwe-austenite ibe yi-martensite xa i-workpiece ipholile ukuya malunga ne-180 ℃, okukhokelela kuxinzelelo olugqithisileyo lwesakhiwo. Ngoko ke, xa umbhobho wensimbi ocinyiweyo ocinyiweyo upholile ngokukhawuleza kule ndawo yokushisa, indlela yokupholisa ngokukhawuleza kufuneka yamkelwe. Ekubeni iqondo lokushisa lamanzi e-outlet kunzima ukuliqonda, kufuneka liqhutywe ngamava. Xa ukugubha kwe-workpiece emanzini kuyeka, amanzi aphumayo angakwazi ukupholisa umoya (ukupholisa ioli kungcono). Ukongezelela, i-workpiece kufuneka ihambe kunokuba i-static xa ingena emanzini, kwaye yenza intshukumo rhoqo ngokwejometri ye-workpiece. Ukupholisa okumileyo okuphakathi kunye nendawo yokusebenza engatshintshiyo ikhokelela kubunzima obungalinganiyo kunye noxinzelelo, okukhokelela kuguquko olukhulu kunye nokuqhekeka kwesixhobo sokusebenza.

Ubunzima obucinyiweyo bombhobho wensimbi ophantsi ocinyiweyo kunye neendawo ezinobushushu kufuneka zifikelele kwi-hrc56 ~ 59, kwaye inokwenzeka yecandelo elikhulu liphantsi, kodwa akufanele libe ngaphantsi kwe-hrc48. Ngaphandle koko, kuthetha ukuba i-workpiece ayicinywanga ngokupheleleyo, kwaye i-sorbite okanye isakhiwo se-ferrite sinokuvela kwisakhiwo. Esi sakhiwo sisagcinwa kwi-matrix ngokufudumala, okungenakukwazi ukufezekisa injongo yokucima kunye nokufudumala.

Kwiqondo lobushushu eliphezulu lombhobho wentsimbi osezantsi emva kokucima, ubushushu bobushushu buhlala bungama-560 ~ 600 ℃, kwaye imfuno yokuqina yi-hrc22 ~ 34. uluhlu lubanzi. Nangona kunjalo, ukuba umzobo uneemfuno zobunzima, ukushisa kweqondo lokushisa kuya kulungelelaniswa ngokweemfuno zomzobo ukuqinisekisa ukuqina. Ngokomzekelo, ezinye iibhobho zentsimbi eziphantsi kwe-shaft zifuna amandla aphezulu kunye nobunzima obuphezulu; Kwezinye iigiya kunye neengxenye ze-shaft ezine-keyway, iimfuno zobunzima ziphantsi ngenxa yokuba kufuneka zigaywe kwaye zifakwe emva kokucima kunye nokufudumala. Ixesha lokubamba ubushushu lixhomekeke kwiimfuno zobunzima kunye nobukhulu bomsebenzi. Sikholelwa ukuba ubunzima emva kobushushu buxhomekeke kwiqondo lobushushu kwaye alinanto yakwenza nexesha lobushushu, kodwa kufuneka liphinde lingene. Ngokuqhelekileyo, ixesha lokubamba i-teering ye-workpiece ingaphezulu kweyure enye.


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