Precision Cold Drawn Tube
Main applications: Mota, midhudhudhu, mafiriji emidziyo, hydraulic parts, mabearings, pneumatic cylinders, uye vamwe vatengi vane zvinodikanwa zvakanyanya zvesimbi pombi kurongeka, kutsvedzerera, kuchena, uye michina zvinhu.
1, Chinhu chikuru chepombi yesimbi isina musono ndechekuti haina welded seam uye inokwanisa kumira kumanikidzwa kukuru.Chigadzirwa chacho chinogona kunge chakaomarara se-chakakandwa kana kuti kutonhora kunodhonzwa zvikamu.
2, Iyo chaiyo inotonhora inodhonzwa pombi ndiyo inonyanya buri remukati, uye saizi yemadziro ekunze ine kushivirira kwakasimba uye hutsinye, uye iko kurongeka kwakakwira zvakanyanya.
Iyo inotonhora brittleness (kana kudzika-tembiricha brittleness tendency) yekutonhora-yakakungurutswa chaiyo inopenya simbi pombi inoratidzwa nekuoma-brittleness shanduko tembiricha Tc.High kuchena iron (0.01% C) ine Tc ye100C, uye yakanyura zvachose pasi pekushisa uku.Zvizhinji zvezvinhu zvinosanganiswa mupombi inotonhorera inopenya inopenya inosimudza tembiricha yekuomesa-inotonhora yepombi inopenya yesimbi inopenya uye inowedzera hunhu hwekutonhora.Kana iyo ductile fracture iri pamusoro petembiricha yekamuri, kutsemuka kweinotonhora-yakakungurutswa chaiyo inopenya simbi pombi idimple fracture, uye kana iine brittle kutyoka pakudziya kwakadzika, iko kutsemuka kwakatsemuka.
Zvikonzero zvekudzikira tembiricha embrittlement yekutonhora-yakakungurutswa chaiyo inopenya simbi pombi ndeiyi:
(1) Kana iyo dislocation inogadzirwa neiyo dislocation sosi panguva deformation yakavharwa nezvipingamupinyi (senge zviyo miganhu, yechipiri yakaenzana), kushushikana kwenzvimbo kunodarika simba redzidziso reinotonhora-yakakungurutswa chaiyo inopenya simbi pombi uye inokonzera microcracks.
(2) Mazhinji akavharwa anotsemuka anoumba microcrack pamuganhu wezviyo.
(3) Zvinoitwa pamharadzano twuviri {110) zvinotsvedza zvinokonzeresa kutsemuka %26lt;010%26gt;, inova microcrack yakaita sewedge, inogona kupatsanuka pamwe ne{100} cleavage plane (ona Mufananidzo 1b).
Izvo zvinhu zvinowedzera kutonhora brittleness yekutonhora-yakakungurutswa chaiyo inopenya simbi pombi ndeiyi:
(1) Solid solution inosimbisa chinhu.Phosphorus inowedzera kuoma-brittle shanduko tembiricha yakasimba kwazvo;kunewo molybdenum, titanium uye vanadium;kana zviri mukati zvakaderera, hazvina mhedzisiro, asi kana zvirimo zvakakwirira, zvinhu zvinowedzera kuoma-brittle shanduko yekushisa isilicon, chromium nemhangura;kuderedza kuoma-brittleness Tembiricha yekushandurwa i nickel, uye kuoma-brittle shanduko tembiricha ndeye manganese.
(2) Zvinhu zvinoumba chikamu chechipiri.Chinhu chakanyanya kukosha chekutonhora brittleness yechando-yakakungurutswa chaiyo inopenya simbi pombi ine chikamu chechipiri kabhoni.Nekuwedzera kwekabhoni yemukati muinotonhora-yakakungurutswa chaiyo inopenya simbi mapaipi, zvirimo pearlite mune inotonhora-yakakungurutswa chaiyo inopenya mapombi esimbi inowedzera, neavhareji yekuwedzera ye1% yevhoriyamu yepearlite.The toughness-brittle transition tembiricha yakawedzera ne 2.2°C paavhareji.Mufananidzo 2 unoratidza mhedzisiro yekabhoni yemukati mune ferrite-pearlite simbi pane brittleness.Kuwedzerwa kwezvinhu zve microalloying zvakaita setitanium, niobium uye vanadium zvinogadzira nitrides yakapararira kana carbonitrides, zvichikonzera kuoma-kuoma kwekuchinja kwekushisa kweinotonhora-yakakungurutswa chaiyo inopenya mapombi esimbi kukwira.
(3) Saizi yezviyo inokanganisa kuoma-brittle shanduko yekushisa.Sezvo zviyo zvinokura, kuoma-brittle shanduko yekushisa inowedzera.Kukwenenzvera zviyo kunoderedza kutonhora brittleness maitiro echando-akakungurutswa nemapaipi akajeka esimbi, inova nzira inoshandiswa zvakanyanya.
