Precision Cold Drawn Tube
Lisebelisoa tsa mantlha: Likoloi, lithuthuthu, lisebelisoa tsa sehatsetsi, likarolo tsa hydraulic, li-bearings, li-cylinders tsa pneumatic, le bareki ba bang ba nang le litlhoko tse phahameng tsa ho nepahala ha lipeipi tsa tšepe, boreleli, bohloeki le thepa ea mochini.
1, Karolo e ka sehloohong ea phala e tloaelehileng ea tšepe e se nang seamless ke hore ha e na seam e cheselitsoeng mme e khona ho mamella khatello e kholo.Sehlahisoa se ka ba likarolo tse thata haholo tse kang-cast kapa tse batang.
2, Peipi e huloang ka mokhoa o batang haholo ke lesoba le ka hare, 'me boholo ba lebota bo ka ntle bo na le mamello e matla le bokhopo,' me ho nepahala ho phahame haholo.
The batang brittleness (kapa tlaase-thempereichara brittleness tšekamelo) ea batang-rollwa ka nepo e khanyang tšepe phala e bontšoa ke toughness-brittleness phetoho mocheso Tc.Tšepe e phahameng ea bohloeki (0.01% C) e na le Tc ea 100C, 'me e tletse ka ho feletseng ka tlas'a mocheso ona.Bongata ba likarolo tse alloying ka batang-phuthoa ho nepahala e khanyang tšepe phala phahamisa toughness-brittle phetoho mocheso oa batang-rollwa ho nepahala e khanyang tšepe phala le eketsa tšekamelo ea batang brittleness.Ha fracture ea ductile e le ka holim'a mocheso oa kamore, ho robeha ha phala ea tšepe e khanyang e pota-potiloeng ke serame ke ho robeha ha dimple, 'me ha ho robeha ha brittle mocheso o tlaase, ke ho robeha ha cleavage.
Mabaka a ho fokotseha ha mocheso o tlase oa phala ea tšepe e pholileng ka mokhoa o batang ke:
(1) Ha dislocations hlahisoang ke dislocation mohloli nakong deformation e thibetsoe ke litšitiso (tse kang mellwane ea lijo-thollo, ea bobeli e lekanang), khatello ea sebakeng seo e feta matla a khopolo-taba a batang-rollitsoeng ho nepahala phala tšepe e khanyang le baka microcracks.
(2) Lithako tse 'maloa tse hoketsoeng li etsa "microcrack" moeling oa lijo-thollo.
(3) Boitšoaro mateanong a litsela tse peli tsa {110) tse thellang bo baka ho sutha ho sa sisinyeheng %26lt;010%26gt;, e leng microcrack e bōpehileng joaloka chesele, e khonang ho petsoha haufi le {100} sefofane se phunyeletsang (sheba setšoantšo sa 1b).
Lintlha tse eketsang bofokoli bo batang ba lipeipi tsa tšepe tse kolobisitsoeng ka mokhoa o batang ke:
(1) Ntho e matlafatsang tharollo e tiileng.Phosphorus e eketsa mocheso oa toughness-brittle transition ka matla ka ho fetisisa;ho boetse ho na le molybdenum, titanium le vanadium;ha litaba li le tlase, li na le phello e fokolang, empa ha litaba li le holimo, likarolo tse eketsang mocheso oa phetoho ea toughness-brittle ke silicon, chromium le koporo;fokotsa toughness-brittleness Thempereichara ea phetoho ke nickel, 'me mocheso oa toughness-brittle ke manganese.
(2) Lintlha tse bōpang karolo ea bobeli.Ntho ea bohlokoa ka ho fetisisa bakeng sa brittleness e batang ea liphaephe tsa tšepe tse khanyang ka mokhoa o batang ka karolo ea bobeli ke carbon.Ka keketseho ea khabone ka har'a liphaephe tsa tšepe tse pholileng tse pota-potiloeng ka mokhoa o batang, litaba tsa pearlite liphaepheng tse batang tsa tšepe tse khanyang lia eketseha, ka keketseho ea karolelano ea 1% ea molumo oa pearlite.Thempereichara ea toughness-brittle transition e eketsehile ka 2.2°C ka karolelano.Setšoantšo sa 2 se bontša phello ea khabone ka tšepe ea ferrite-pearlite ho brittleness.Keketso ea likaroloana tsa microalloying joalo ka titanium, niobium le vanadium e tla theha nitrides kapa carbonitrides e qhalakaneng, e leng se tla etsa hore mocheso oa phetoho o thata oa lipeipi tsa tšepe tse khanyang o phahame.
(3) Boholo ba lijo-thollo bo ama mocheso oa phetoho ea toughness-brittle.Ha lithollo li ntse li hohola, mocheso oa phetoho ea toughness-brittle oa eketseha.Ho hloekisoa ha lijo-thollo ho fokotsa tšekamelo e batang ea brittleness ea lipeipi tsa tšepe tse khanyang tse batang, e leng mokhoa o sebelisoang haholo.
