Iintsimbi eziRound (Intsimbi yeBha eRound)

Ukuhlelwa ngokwenkqubo
Intsimbi ejikelezayo ihlelwa njengeshushu esongwayo, ikhutshiwe kwaye ibandayo.Intsimbi ejikelezileyo eshushu yi-5.5-250 mm ngobukhulu.Phakathi kwazo: i-5.5-25 mm encinci yentsimbi ejikelezayo ubukhulu becala kwimicu ethe tye kwimiqulu yokubonelela, esetyenziswa ngokuqhelekileyo ukuqinisa imivalo, iibholithi kunye neendawo ezahlukeneyo zoomatshini;Intsimbi ejikelezileyo enkulu kune-25 mm, isetyenziswa ikakhulu ekwenzeni iinxalenye zoomatshini, i-billet yombhobho wensimbi engenamthungo, njl.
Ihlelwa ngokwemichiza
Intsimbi yeCarbon inokohlulwa ibe yintsimbi ephantsi yekhabhoni, intsimbi yekhabhoni ephakathi kunye nentsimbi yekhabhoni ephezulu ngokwemichiza yayo (oko kukuthi umxholo wekhabhoni).
(1) Intsimbi ethambileyo
Eyaziwa nangokuthi insimbi epholileyo, umxholo wekhabhoni ukusuka kwi-0.10% ukuya kwi-0.30% Insimbi ye-carbon ephantsi ilula ukwamkela iintlobo ezahlukeneyo zokucutshungulwa ezifana nokukhwabanisa, i-welding kunye nokusika, edla ngokusetyenziswa ekwenzeni amatyathanga, i-rivets, i-bolts, i-shafts, njl.
(2) Intsimbi yekhabhoni ephakathi
Umxholo weCarbon 0.25% ~ 0.60% carbon steel.Kukho intsimbi yokuthomalalisa, intsimbi ethobayo, intsimbi ebilayo kunye nezinye iimveliso.Ngaphandle kwekhabhoni, ikwaqulethe isixa esincinci semanganese (0.70% ~ 1.20%).Ngokomgangatho wemveliso yahlulwe kwintsimbi eqhelekileyo ye-carbon structural kunye ne-high quality carbon structural steel.Ukusebenza kakuhle kwe-thermal kunye nokusika, ukusebenza kakubi kwe-welding.Amandla kunye nobunzima buphezulu kunentsimbi ephantsi yekhabhoni, kodwa iplastiki kunye nokuqina kuphantsi kunentsimbi ephantsi yekhabhoni.Izinto ezishushu ezigoqiweyo nezibandayo zingasetyenziswa ngokuthe ngqo ngaphandle konyango lobushushu okanye emva konyango lobushushu.Intsimbi yekhabhoni ephakathi emva kokucima kunye nokufudumala ineempawu ezilungileyo ezibanzi zoomatshini.Obona bunzima buphakamileyo bumalunga ne-HRC55(HB538), σb yi-600 ~ 1100MPa.Ke ngoko kwinqanaba eliphakathi lamandla osetyenziso olwahlukeneyo, intsimbi yekhabhoni ephakathi yeyona isetyenziswa kakhulu, ukongeza njengesixhobo sokwakha, kodwa kunye nenani elikhulu elisetyenziselwa ukwenziwa kwamacandelo ahlukeneyo omatshini.
(3) Intsimbi yekhabhoni ephezulu
Ngokuqhelekileyo kuthiwa yintsimbi yensimbi, umxholo wekhabhoni usuka kwi-0.60% ukuya kwi-1.70% kwaye unokuqina kunye nokufudumala.Izando kunye ne-crowbars zenziwe ngetsimbi kunye nomxholo wekhabhoni we-0.75%.Izixhobo zokusika ezifana ne-drill, i-tap, i-reamer, njl njl. zenziwe ngetsimbi kunye nomxholo wekhabhoni we-0.90% ukuya kwi-1.00%.

Ukwahlula ngomgangatho wentsimbi
Ngokomgangatho wentsimbi inokwahlulwa ibe yintsimbi eqhelekileyo yekhabhoni kunye nomgangatho ophezulu wekhabhoni yentsimbi.
(1) Intsimbi yesakhiwo sekhabhoni eqhelekileyo, eyaziwa ngokuba yintsimbi yekhabhoni eqhelekileyo, inemida ebanzi kumxholo wekhabhoni, uluhlu lwentsebenzo kunye nomxholo we-phosphorus, isulfure kunye nezinye izinto ezishiyekileyo.E-China nakwamanye amazwe, ihlulwe ibe ngamacandelo amathathu ngokwemiqathango yokunikezelwa okuqinisekisiweyo: I-Class A yentsimbi yintsimbi eneepropati eziqinisekisiweyo zemishini.Iintsimbi zeKlasi B (Iintsimbi zeKlasi B) ziintsimbi ezinokwakheka kweekhemikhali eziqinisekisiweyo.Iintsimbi ezikhethekileyo (Iintsimbi zeKlasi C) ziziintsimbi eziqinisekisa zombini iipropati zoomatshini kunye nokwakheka kweekhemikhali, kwaye zihlala zisetyenziselwa ukwenziwa kwezinto ezibaluleke kakhulu.I-China ivelisa kwaye isebenzisa i-A3 yensimbi eninzi (i-Class A No.3 yensimbi) enomxholo wekhabhoni malunga ne-0.20%, esetyenziswa kakhulu kwizakhiwo zobunjineli.
Enye i-carbon structural steel nayo yongeza i-aluminium yokulandelela okanye i-niobium (okanye ezinye izinto zokwenza i-carbide) ukwenza i-nitride okanye i-carbide particles, ukwenzela ukunciphisa ukukhula kweenkozo, ukuqinisa isinyithi, ukonga intsimbi.E-China nakwamanye amazwe, ukuze kuhlangatyezwane neemfuno ezikhethekileyo zentsimbi yobungcali, ukwakheka kweekhemikhali kunye neepropati zentsimbi eqhelekileyo ye-carbon structural ziye zahlengahlengiswa, ngaloo ndlela kuphuhliswa uthotho lwentsimbi eqhelekileyo ye-carbon structural ukuze kusetyenziswe ubungcali (ezifana nebhulorho, ulwakhiwo; i-rebar, intsimbi yesitya soxinzelelo, njl.).
(2) Xa kuthelekiswa nentsimbi eqhelekileyo ye-carbon structural, umxholo wesulfure, i-phosphorus kunye nezinye izinto ezingenayo i-metallic inclusions kwi-high quality carbon structural steel iphantsi.Ngokutsho komxholo wekhabhoni kunye nokusetyenziswa kweentlobo ezahlukeneyo, olu hlobo lwentsimbi lwahlulahlulwe ngokweendidi ezintathu:
① Ngaphantsi kwe-0.25% C yintsimbi yekhabhoni ephantsi, ngakumbi enekhabhoni engaphantsi kwe-0.10% ye-08F,08Al, ngenxa yobuhle bayo obunzulu obunzulu kunye nokuwelda kwaye isetyenziswa ngokubanzi njengendawo yokuzoba enzulu njengemoto, iinkonkxa..... Etc. 20G yeyona nto iphambili kwiibhoyila eziqhelekileyo.Ukongeza, intsimbi ethambileyo isetyenziswa ngokubanzi njengentsimbi ye-carburizing, esetyenziswa ekwenzeni oomatshini.
②0.25 ~ 0.60% C yintsimbi yekhabhoni ephakathi, esetyenziswa kakhulu kwimeko yokufudumala, ukwenza iinxalenye kumashishini okuvelisa oomatshini.
(3) Ngaphezulu kwe-0.6% C yintsimbi yekhabhoni ephezulu, esetyenziswa kakhulu ekwenzeni iziphethu, iigiya, imiqulu, njl.
Ngokomxholo ohlukeneyo we-manganese, inokwahlulwa ibe ngumxholo we-manganese oqhelekileyo (0.25 ~ 0.8%) kunye nomxholo ophezulu we-manganese (0.7 ~ 1.0% kunye ne-0.9 ~ 1.2%) iqela lentsimbi.I-Manganese inokuphucula ukuqina kwentsimbi, iqinise i-ferrite, iphucule amandla esivuno, amandla okuqina kunye nokumelana nokunxiba kwentsimbi.Ngokuqhelekileyo, "i-Mn" yongezwa emva kwebakala lentsimbi enomxholo ophezulu we-manganese, njenge-15Mn kunye ne-20Mn, ukuhlula kwi-carbon steel kunye nomxholo oqhelekileyo we-manganese.