I-Precision Cold Drawn tube
Usetyenziso oluphambili: Iimoto, izithuthuthu, izixhobo zefriji, iinxalenye zehydraulic, iibheringi, iisilinda ze-pneumatic, kunye nabanye abathengi abaneemfuno eziphezulu zokuchaneka kombhobho wentsimbi, ukuguda, ukucoceka, kunye neempawu zoomatshini.
I-1, eyona nto iphambili yombhobho wentsimbi oqhelekileyo ongenamthungo kukuba ayinayo i-welded seam kwaye inokumelana noxinzelelo olukhulu.Imveliso inokuba rhabaxa kakhulu njenge-cast okanye iindawo ezitsaliweyo ezibandayo.
2, Umbhobho otsalwa ngokubanda ochanekileyo ungowomngxuma wangaphakathi, kwaye ubungakanani bodonga lwangaphandle bunonyamezelo olungqongqo kunye noburhabaxa, kwaye ukuchaneka kuphezulu kakhulu.
Ubuqhophololo obubandayo (okanye iqondo lobushushu obuphantsi) lobuqhophololo obuchanekileyo bombhobho wentsimbi obuqengqelekayo bucaciswe bubulukhuni-bubrittleness utshintsho lobushushu Tc.Intsimbi yokucoca okuphezulu (0.01% C) ine-Tc ye-100C, kwaye ifakwe ngokupheleleyo ngaphantsi kweli qondo lokushisa.Uninzi lwezinto ezidityanisiweyo kumbhobho wentsimbi ocwengileyo obandayo-obuqengqelekayo ziphakamisa ukuqina-brittle utshintsho lobushushu lombhobho wentsimbi oqaqambileyo oqengqelekayo kunye nokwandisa ukutyekela kobuqhophololo obubandayo.Xa i-ductile fracture ingaphezulu kobushushu begumbi, ukuphuka kombhobho wentsimbi echanekileyo epholileyo epholileyo kukuqhekeka kwe-dimple, kwaye xa i-brittle fracture kwiqondo lokushisa eliphantsi, kukuqhekeka kwe-cleavage.
Izizathu zobushushu obuphantsi bombhobho wentsimbi oqaqambileyo oqengqelekayo zezi:
(1) Xa i-dislocation eveliswa ngumthombo wokuchithwa ngexesha lokuguqulwa ivalwe yimiqobo (efana nemida yengqolowa, isibini esilinganayo), uxinzelelo lwengingqi ludlula amandla angqiqweni abandayo aqengqelekayo umbhobho wentsimbi eqaqambileyo kwaye ubangela i-microcracks.
(2) Iintlobo ezininzi zokuchithwa kweeplagi zenza i-microcrack kumda weenkozo.
(3) Ukusabela ekudibaneni kweebhanti ezimbini zokutyibilika {110) kubangela ukushenxiswa okungashukumiyo %26lt;010%26gt;, eyi-microcrack emile okwe wedge, enokwahlulwa ecaleni kwe {100} inqwelomoya yokuqhekeka (bona uMfanekiso 1b).
Imiba eyonyusa ubuqhophololo obubandayo bemibhobho yentsimbi eqaqambileyo eqengqelekayo zezi:
(1) Into yokomeleza isisombululo esiqinileyo.I-Phosphorus yongeza ukuqina-brittle transition ubushushu obunamandla;kukho kwakhona i-molybdenum, i-titanium kunye ne-vanadium;xa umxholo uphantsi, unempembelelo encinci, kodwa xa umxholo uphezulu, izinto ezandisa ukushisa kwe-toughness-brittle transition ziyi-silicon, i-chromium kunye nobhedu;nciphisa ukuqina-brittleness Ubushushu boguqulo yi-nickel, kunye ne-toughness-brittle conversion yeqondo lobushushu yimanganese.
(2) Izinto ezenza isigaba sesibini.Eyona nto ibaluleke kakhulu kwi-brittleness ebandayo ye-cold-rolled precision imibhobho yentsimbi eqaqambileyo kunye nesigaba sesibini yikhabhoni.Ngokunyuka komxholo wekhabhoni kwimibhobho yentsimbi ekhanyayo epholileyo, umxholo we-pearlite kwimibhobho yentsimbi epholileyo epholileyo iyanda, ngokunyuka okuphakathi kwe-1% yomthamo we-pearlite.Ubushushu benguqu obuqinileyo bunyuke nge-2.2°C ngokomndilili.Umzobo we-2 ubonisa umphumo womxholo wekhabhoni kwintsimbi ye-ferrite-pearlite kwi-brittleness.Ukongezwa kwezinto ezincinci ezifana ne-titanium, i-niobium kunye ne-vanadium kuya kwenza ii-nitrides ezisasaziweyo okanye i-carbonitrides, ebangela ukuba ubushushu bokutshintsha kobushushu obuchanekileyo obuqengqelekayo obubandayo bunyuke imibhobho yentsimbi eqaqambileyo.
(3) Ubungakanani benkozo buchaphazela iqondo lotshintsho lokuqina-brittle.Njengoko iinkozo zirhabaxa, ubushushu benguquko obuqinileyo buyanda.Ukucokisa iinkozo kunciphisa utyekelo olubandayo lwe-brittleness ye-cold-rolled precision yentsimbi eqaqambileyo, eyindlela esetyenziswa ngokubanzi.
