Imaphi amaphuzu okufanele sinake lapho sishisela i-carbon steel high

I-carbon steel ephezulu ibhekisela ku-carbon steel ene-w(C) ephakeme kuno-0.6%. Inomkhuba omkhulu wokuqina kune-medium carbon steel futhi yakha i-carbon martensite ephezulu, ezwela kakhulu ukwakheka kwemifantu ebandayo. Ngesikhathi esifanayo, isakhiwo se-martensite esakhiwe endaweni ye-welding ethintekayo ekushiseni sinzima futhi sihlakazekile, okwenza ukuba i-plasticity nokuqina kokujoyina kuncishiswe kakhulu. Ngakho-ke, ukushisela kwensimbi enekhabhoni ephezulu kumbi impela, futhi izinqubo ezikhethekile zokushisela kufanele zamukelwe ukuze kuqinisekiswe ukusebenza kokuhlangana. . Ngakho-ke, ngokuvamile akuvamile ukusetshenziswa ezakhiweni ezishiselwe. Insimbi enekhabhoni ephezulu isetshenziswa kakhulu ezingxenyeni zomshini ezidinga ubulukhuni obuphezulu nokumelana nokugqokwa, njengama-shaft ajikelezayo, amagiya amakhulu nama-couplings [1]. Ukuze ulondoloze insimbi futhi wenze lula ubuchwepheshe bokucubungula, lezi zingxenye zomshini zivame ukuhlanganiswa nezakhiwo ezishiselwe. Ekwenziweni komshini osindayo, izinkinga zokushisela zezingxenye eziphezulu ze-carbon steel nazo zihlangatshezwana nazo. Lapho wenza inqubo yokushisela ye-carbon steel weldments ephezulu, ukukhubazeka okuhlukahlukene okungenzeka kube khona kufanele kuhlaziywe ngokuphelele futhi kufanele kuthathwe izinyathelo ezihambisanayo zenqubo yokushisela.

Imishini yokushisela i-Xinfa inezici zekhwalithi ephezulu nenani eliphansi. Ukuze uthole imininingwane, sicela uvakashele: Abakhiqizi Be-Welding & Cutting Manufacturers - China Welding & Cutting Factory & Suppliers (xinfatools.com)

1 Ukushisela kwensimbi ephezulu ye-carbon

1.1 Indlela yokushisela

Insimbi enekhabhoni ephezulu isetshenziselwa ikakhulukazi izakhiwo ezinobulukhuni obuphezulu nokumelana nokugqokwa okuphezulu, ngakho-ke izindlela eziyinhloko zokushisela i-electrode arc welding, brazing kanye ne-arc welding engaphansi kwamanzi.

1.2 Izinto zokushisela

I-high carbon steel welding ngokuvamile ayidingi amandla alinganayo phakathi kokuhlangana nesisekelo sensimbi. Lapho kushiselwa i-arc, ama-electrode e-hydrogen aphansi anamandla okususa isibabule, okuqukethwe kwe-hydrogen okungahlukaniseki okuphansi ensimbi ediphozithisiwe, kanye nokuqina okuhle kusetshenziswa ngokuvamile. Lapho amandla ensimbi ye-weld kanye nesisekelo sensimbi kudingeka alingane, induku ye-welding ephansi ye-hydrogen yebanga elihambisanayo kufanele ikhethwe; lapho amandla ensimbi ye-weld kanye nesisekelo sensimbi engadingeki, induku ye-welding ephansi ye-hydrogen enezinga lamandla eliphansi kunelesisekelo sensimbi kufanele kukhethwe. Khumbula izinduku zokushisela ezinezinga eliphezulu lamandla kunesisekelo sensimbi azikwazi ukukhethwa. Uma isisekelo sensimbi singavunyelwe ukuba sishiswe ngaphambili ngesikhathi se-welding, ukuze kuvinjwe ukuqhekeka okubandayo endaweni ethintekile ukushisa, ama-electrode ensimbi engenasici ye-austenitic angasetshenziswa ukuthola isakhiwo se-austenitic nge-plasticity enhle kanye nokumelana nokuqhekeka okuqinile.

1.3 Ukulungiselela i-bevel

Ukuze kuncishiswe ingxenye enkulu yekhabhoni kunsimbi yokushisela, isilinganiso sokuhlanganisa kufanele sincishiswe, ngakho-ke imisele emise okwe-U noma engu-V ivame ukusetshenziswa ngesikhathi sokushisela, futhi kufanele kuqashelwe ukuhlanza inkaba namabala kawoyela, ukugqwala, njll ngaphakathi kwama-20mm ezinhlangothini zombili ze-groove.

1.4 Ukushisa kuqala

Uma kushiswa ngama-electrode ensimbi esakhiwo, kufanele kushiswe ngaphambili ngaphambi kokushisela, futhi izinga lokushisa langaphambi kokushisa lilawulwa phakathi kuka-250 ° C no-350 ° C.

1.5 Ukucutshungulwa kwe-Interlayer

Lapho ushisela izendlalelo eziningi kanye nokudlula okuningi, i-electrode enobubanzi obuncane kanye namanje ephansi isetshenziselwa ukudlula kokuqala. Ngokuvamile, i-workpiece ifakwa ku-welding eqondile eqondile noma induku yokushisela isetshenziselwa ukushwibeka eceleni, ukuze yonke indawo yensimbi ethintekile ethinteke ukushisa ishise ngesikhathi esifushane ukuze kutholwe imiphumela yokushisa nokugcina ukushisa.

1.6 Ukwelashwa kokushisa kwangemva kokushisela

Ngokushesha ngemva kokushisela, i-workpiece ifakwa esithandweni sokushisisa futhi igcinwe ku-650°C ukuze iqede ukucindezeleka [3].

2 Ukulimala kwe-Welding yensimbi ephezulu ye-carbon kanye nezinyathelo zokuvimbela

Ngenxa yokuthi i-carbon steel ephezulu inomkhuba oqinile wokuqina, imifantu eshisayo kanye nemifantu ebandayo ivame ukwenzeka ngesikhathi sokushisela.

2.1 Izinyathelo zokuvimbela imifantu eshisayo

1) Lawula ukwakheka kwamakhemikhali we-weld, lawula ngokuqinile okuqukethwe kwesulfure ne-phosphorus, futhi wandise ngokufanele okuqukethwe kwe-manganese ukuze uthuthukise isakhiwo sokushisela futhi unciphise ukuhlukaniswa.

2) Lawula ukuma kwe-weld ye-cross-sectional futhi wenze isilinganiso sobubanzi-kuya-ekujuleni sibe sikhudlwana ukugwema ukuhlukaniswa phakathi nendawo ye-weld.

3) Ukuze uthole ama-welds aqinile, imingcele ye-welding efanele, ukulandelana kwe-welding efanele kanye nesiqondiso kufanele kukhethwe.

I-4) Uma kunesidingo, thatha izinyathelo zokushisa kuqala kanye nezinyathelo zokupholisa kancane ukuvimbela ukuvela kwemifantu eshisayo.

5) Khulisa i-alkalinity yenduku yokushisela noma i-flux ukuze unciphise okuqukethwe okungcolile ku-weld futhi uthuthukise izinga lokuhlukaniswa.

2.2 Izinyathelo zokuvimbela imifantu ebandayo[4]

I-1) Ukushisa ngaphambi kokushisela nokupholisa kancane ngemva kokushisela akukwazi nje ukunciphisa ubulukhuni nokuqina kwendawo ethinteke ukushisa, kodwa futhi kusheshise ukusakazeka kwangaphandle kwe-hydrogen ku-weld.

2) Khetha izindlela zokushisela ezifanele.

I-3) Yamukela ukulandelana okufanelekile komhlangano kanye nokushisela ukuze unciphise ukucindezelwa kokuvinjelwa kwejoyinti elishiselwe futhi uthuthukise isimo sokucindezeleka sokushisela.

4) Khetha izinto zokushisela ezifanele, sula ama-electrode bese uguquguquka ngaphambi kokushisela, futhi uzigcine zilungele ukusetshenziswa.

5) Ngaphambi kokushisela, amanzi, ukugqwala nokunye ukungcola endaweni eyisisekelo yensimbi ezungeze umsele kufanele kususwe ngokucophelela ukuze kuncishiswe okuqukethwe kwe-hydrogen ehlakazekayo endaweni yokushisela.

6) Ukwelashwa kwe-Dehydrogenation kufanele kwenziwe ngokushesha ngaphambi kokushisela ukuvumela i-hydrogen ukuba iphume ngokugcwele ekuhlanganyeleni okushiselwe.

7) Ukwelashwa kwe-anneal eqeda ukucindezeleka kufanele kwenziwe ngokushesha ngemva kokushisela ukukhuthaza ukusakazeka kwangaphandle kwe-hydrogen ku-weld.

3 Isiphetho

Ngenxa yokuqukethwe kwekhabhoni ephezulu, ukuqina okuphezulu kanye nokushisela okungekuhle kwe-carbon steel ephezulu, kulula ukukhiqiza ukwakheka okuphezulu kwe-carbon martensite kanye nemifantu yokushisela ngesikhathi sokushisela. Ngakho-ke, lapho welding high carbon steel, inqubo Welding kumele kukhethwe ngokunengqondo. Futhi thatha izinyathelo ezihambisanayo ngesikhathi ukuze unciphise ukuvela kwemifantu ye-welding futhi uthuthukise ukusebenza kwamalunga ashiselwe.