Izinsimbi Eziyindilinga (I-Round Bar Steel)

Ukuhlukaniswa ngenqubo
Insimbi eyisiyingi ihlukaniswa njengegoqiwe eshisayo, ekhandwayo futhi ebandayo.Insimbi eyindilinga eshisiwe ingu-5.5-250 mm ngosayizi.Phakathi kwazo: 5.5-25 mm insimbi encane eyindilinga ikakhulukazi emigqeni eqondile ibe izinyanda zokuhlinzeka, evame ukusetshenziselwa ukuqinisa imigoqo, amabhawodi kanye nezingxenye ezihlukahlukene zemishini;Insimbi eyindilinga enkulu kuno-25 mm, esetshenziswa ikakhulukazi ekwenzeni izingxenye zomshini, i-billet yepayipi lensimbi engenamthungo, njll.
Ihlukaniswa ngokwamakhemikhali
Insimbi yekhabhoni ingahlukaniswa ibe yinsimbi ephansi ye-carbon, insimbi ye-carbon steel kanye ne-carbon steel ephezulu ngokuya ngamakhemikhali ayo (okungukuthi okuqukethwe kwekhabhoni).
(1) Insimbi ethambile
Eyaziwa nangokuthi insimbi emnene, okuqukethwe kwekhabhoni kusuka ku-0.10% kuya ku-0.30% Insimbi ye-carbon ephansi kulula ukwamukela ukucutshungulwa okuhlukahlukene njengokubumba, ukushisela nokusika, okuvame ukusetshenziswa ekwenzeni amaketanga, ama-rivets, amabhawodi, ama-shafts, njll.
(2) Insimbi ye-carbon emaphakathi
Okuqukethwe kwekhabhoni 0.25% ~ 0.60% carbon steel.Kukhona insimbi yokulalisa, i-semi-sedative steel, insimbi ebilayo neminye imikhiqizo.Ngaphandle kwekhabhoni, iqukethe nenani elincane le-manganese (0.70% ~ 1.20%).Ngokwekhwalithi yomkhiqizo ihlukaniswe ngensimbi evamile ye-carbon structural kanye nekhwalithi ephezulu ye-carbon structural steel.Ukusebenza okuhle okushisayo nokusika, ukusebenza kabi kwe-welding.Amandla nobulukhuni kuphakeme kune-low carbon steel, kodwa ipulasitiki nokuqina kuphansi kune-low carbon steel.Izinto ezishisayo ezigoqiwe nezibandayo zingasetshenziswa ngokuqondile ngaphandle kokwelashwa kokushisa noma ngemva kokwelashwa kokushisa.Insimbi yekhabhoni emaphakathi ngemuva kokucisha kanye nokushisa inezakhiwo ezinhle ezibanzi zemishini.Ukuqina okuphezulu okuzuziwe kumayelana ne-HRC55(HB538), σb ngu-600 ~ 1100MPa.Ngakho-ke, ezingeni eliphakathi lamandla okusetshenziswa okuhlukahlukene, insimbi ye-carbon ephakathi iyona esetshenziswa kabanzi, ngaphezu kwalokho njengempahla yokwakha, kodwa futhi nenani elikhulu elisetshenziswa ekwenzeni izingxenye ezihlukahlukene zemishini.
(3) Insimbi enekhabhoni ephezulu
Okuvame ukubizwa nge-tool steel, okuqukethwe kwekhabhoni kusuka ku-0.60% kuya ku-1.70% futhi kungenziwa lukhuni futhi kufutheke.Izando nama-crowbars zenziwe ngensimbi enokuqukethwe kwekhabhoni engu-0.75%.Amathuluzi okusika anjenge-drill, kampompi, i-reamer, njll. akhiqizwa ngensimbi enokuqukethwe kwekhabhoni engu-0.90% kuya ku-1.00%.

Ukuhlukaniswa ngekhwalithi yensimbi
Ngokwekhwalithi yensimbi ingahlukaniswa ibe yi-carbon steel evamile kanye nekhwalithi ephezulu ye-carbon steel.
(1) Insimbi evamile ye-carbon structural steel, eyaziwa nangokuthi i-carbon steel evamile, inemikhawulo ebanzi kokuqukethwe kwekhabhoni, ububanzi bokusebenza nokuqukethwe kwe-phosphorus, isulfure nezinye izakhi ezisele.E-China nakwamanye amazwe, ihlukaniswe izigaba ezintathu ngokuya ngemibandela yokulethwa okuqinisekisiwe: Insimbi ye-Class A iyinsimbi enezakhiwo eziqinisekisiwe zemishini.Izinsimbi ze-Class B (izinsimbi ze-Class B) ziyizinsimbi ezinokwakheka kwamakhemikhali okuqinisekisiwe.Izinsimbi ezikhethekile (Izinsimbi Zekilasi C) ziyizinsimbi eziqinisekisa kokubili izakhiwo zemishini nokwakheka kwamakhemikhali, futhi ngokuvamile zisetshenziswa ekwenzeni izingxenye zesakhiwo ezibaluleke kakhulu.I-China ikhiqiza futhi isebenzisa insimbi ye-A3 kakhulu (insimbi ye-Class A No.3) enekhabhoni engaba ngu-0.20%, esetshenziswa kakhulu ezakhiweni zobunjiniyela.
Enye i-carbon structural steel yengeza i-trace aluminium noma i-niobium (noma ezinye izinto zokwakha i-carbide) ukuze yenze izinhlayiya ze-nitride noma ze-carbide, ukuze kukhawulwe ukukhula okusanhlamvu, kuqinise insimbi, konge insimbi.E-China nakwamanye amazwe, ukuze kuhlangatshezwane nezidingo ezikhethekile zensimbi yobungcweti, ukwakheka kwamakhemikhali kanye nezakhiwo zensimbi evamile ye-carbon structural steel kuye kwalungiswa, ngaleyo ndlela kwakhiwe uchungechunge lwensimbi evamile ye-carbon structural ukuze isetshenziswe ngochwepheshe (njengebhuloho, ukwakhiwa, rebar, insimbi yomkhumbi wengcindezi, njll.).
(2) Uma kuqhathaniswa nensimbi evamile ye-carbon structural, okuqukethwe kwesibabule, i-phosphorus nokunye okufakiwe okungeyona insimbi kunsimbi yekhwalithi ephezulu ye-carbon structural kuphansi.Ngokusho kokuqukethwe kwekhabhoni nokusetshenziswa okuhlukile, lolu hlobo lwensimbi lucishe luhlukaniswe izigaba ezintathu:
① Ngaphansi kuka-0.25% C insimbi ye-carbon ephansi, ikakhulukazi enekhabhoni engaphansi kuka-0.10% we-08F,08Al, ngenxa yokudweba kwayo okuhle okujulile nokushisela futhi isetshenziswa kabanzi njengezingxenye zokudweba ezijulile njengezimoto, amathini..... Etc. 20G into esemqoka yamabhayela ajwayelekile.Ngaphezu kwalokho, insimbi emnene nayo isetshenziswa kabanzi njengensimbi ye-carburizing, esetshenziswa ekwenziweni kwemishini.
②0.25 ~ 0.60% C iyinsimbi ye-carbon ephakathi, esetshenziswa kakhulu esimweni sokufudumeza, yenza izingxenye embonini yokukhiqiza imishini.
(3) Ngaphezulu kuka-0.6% C insimbi yensimbi ephezulu, esetshenziswa kakhulu ekwenzeni iziphethu, amagiya, amaroli, njll.
Ngokokuqukethwe okuhlukile kwe-manganese, ingahlukaniswa ngokuqukethwe kwe-manganese evamile (0.25 ~ 0.8%) kanye nokuqukethwe kwe-manganese ephezulu (0.7 ~ 1.0% kanye neqembu lensimbi elingu-0.9 ~ 1.2%).I-Manganese ingathuthukisa ukuqina kwensimbi, iqinise i-ferrite, ithuthukise amandla esivuno, amandla aqinile kanye nokumelana nokugqoka kwensimbi.Ngokuvamile, "u-Mn" wengezwa ngemva kwebanga lensimbi enokuqukethwe okuphezulu kwe-manganese, okufana no-15Mn kanye no-20Mn, ukuze ahlukanise nensimbi ye-carbon enokuqukethwe okujwayelekile kwe-manganese.