Dab tsi yog Cov Qauv Hloov hauv Gr4 Titanium Rods Thaum Kub Extrusion Ua?
Apr 13, 2024
Industrially ntshiab titanium muaj ib tug nruab nrab ntawm impurities, muaj siab zog thiab plasticity, thiab yog haum rau ua cov khoom siv. Qhov qis thermal conductivity ntawm titanium thiab titanium alloy billets yuav ua rau muaj qhov sib txawv ntawm qhov kub thiab txias ntawm cov txheej txheej sab hauv thaum kub extrusion, thiab qhov kub sib txawv tuaj yeem ncav cuag 200 ~ 250 degrees thaum qhov kub ntawm lub tog raj kheej extrusion yog 400 degrees.
Nyob rau hauv lub suction reinforcing thiab billet seem muaj ib tug loj kub sib txawv nyob rau hauv lub sib koom ua ke ntawm lub billet nto thiab qhov chaw ntawm cov hlau los tsim ntau yam sib txawv zog zog thiab cov khoom yas, nyob rau hauv cov txheej txheem extrusion yuav ua rau uneven deformation, nyob rau hauv lub nto txheej. ntawm qhov loj ntxiv tensile stresses, los ua nyob rau hauv lub extrusion ntawm qhov chaw ntawm cov khoom los tsim cov kab nrib pleb thiab kab nrib pleb nyob rau hauv lub hauv paus.
Txog tam sim no, cov txheej txheem extrusion ntawm titanium rods yuav tsum tau lubricated. Lub ntsiab yog vim li cas rau qhov no yog tias titanium tsim fusible eutectic crystals nrog hlau los yog npib tsib xee-raws li alloy tuag cov ntaub ntawv ntawm kub ntawm 980 degrees thiab 1030 degrees, ua rau muaj zog tuag hnav. Thaum siv graphite lubricants, sib sib zog nqus kab kos kab tuaj yeem tsim rau ntawm qhov chaw ntawm cov khoom, uas yog qhov tshwm sim ntawm titanium rods thiab titanium alloy rods adhering rau kev ua haujlwm ntawm pwm.
Cov tshuaj muaj pes tsawg leeg ntawm Titanium Gr 4
| Ti | Fe | C | O | H | N |
| % | % | % | % | % | |
| bal | 0.3 | 0.08 | 0.25 | 0.015 | 0.03 |
Cov yam ntxwv ntawm Titanium Gr 4
| annealed | Kev qhia tshwj xeeb (ASTM F67) |
| tensile zog Rm | Ntau dua lossis sib npaug li 550 |
| yield-strength Rp0.2 | Ntau dua lossis sib npaug rau 483 |
| elongation A | Ntau dua lossis sib npaug li 15% |