Nrog rau kev tsim kho lub zog-txuag, tus phooj ywg environmentally, kev sib tw, thiab qhov muag tsheb me, cov twj siv zog ntawm lub tsheb muaj zog tau txais kev mob siab. Automotive fasteners yog lub ntsiab sib txuas ntawm lub tsheb, txhawm rau yuav luag ib nrab ntawm tag nrho cov naj npawb ntawm cov tsheb.
Kev tshawb nrhiav thiab kev loj hlob ntawm cov cuab yeej hluav taws xob fasteners nyob rau hauv Suav teb yog tseem qaum rov qab piv nrog cov teb chaws tsim.
Yog li cas lub ntsiab lus tseem ceeb hauv kev tsim muaj zog-fasteners rau tsheb? Ib qho yog qhov kev xaiv ntawm cov ntaub ntawv fastener, thiab ib qho yog qhov kev kho cua kub txheej txheem ntawm cov fasteners. Tsis muaj teeb meem uas taw tes tsis zoo, kev ua kom muaj zog ntawm lub zog ntawm lub tsheb yuav tsis raug, uas yuav ua rau muaj teeb meem kev nyab xeeb rau kev tsav tsheb.
Cov neeg muaj lub siab khov kho siab yuav tsum tau muab cov qauv ua kom muaj zog thiab muaj lub zog ua kom muaj zog, nrog rau cov quenching los xyuas kom cov martensite qauv ntawm cov tub ntxhais kawm, uas muaj feem xyuam nrog rau qhov nyuaj ntawm cov hlau. Related.
Txawm tias nws yog cov pa hlau lossis hlau hlau, los ntawm kev sib zog ua kom tiav, thaum lub sib tw ceev nrooj los ntawm kev kub siab kom tau cov khoom tiav tib qho kev kho mob, lawv cov khoom siv dag zog xws li lub zog, kev lag luam thiab kev muaj zog.
Txawm li cas los xij, yog tias nws tsis tag zog, txawm tias qhov nyuaj dhau los ntawm qhov kub siab yog tib yam li ntawd tom qab tempering, lub zog tawm los, kev loj hlob tom qab forging, thaj tsam thiab qhov cuam tshuam toughness qis dua, thiab cov kev txo qis yog qhov degree ntawm hardening thiab txo qis.
Lub ntsuas cua kub cua txias heev yog txiav txim siab raws li tshuaj lom neeg muaj pes tsawg leeg ntawm cov hlau ua ke nrog ib qho kev ua.
Lub zog-txuag thiab kev txhim kho ntawm lub tsheb txo nws hwj mus rau kev tsim qauv thiab cov tshuab fais fab. Raws li lub zog nce, cov pob txha los ntawm hydrogen embrittlement yog cov quenched thiab tempered martensitic hlau, uas tshwm sim hauv yielding. Rau cov khoom siv zog ua muaj zog> 620 MPa thiab ib qho nqi zog> 31 HRC, qhov siab dua tensile zog, qhov ntau dua nws yog rau hydrogen embrittlement. Qhov yooj yim dua cov khoom siv los nqus dej hydrogen, qhov nyuaj nyuaj nws yog tsav hydrogen.
Qhov kev txob siab ntawm tus cwj pwm qhuab ntuas, siab bainite, qis dua bainite, sorbite, pearlite thiab austenite rau hydrogen hnyuv siab.
Lub tsheb khawm quenching thiab tempering tshav kub kho yog nqa tawm ntawm kev kub. Yuav kom txo cov txheej txheem ntawm oxidation thaum lub caij ua kom sov, qhov chaw tiv thaiv muaj feem ntau ntxiv rau qhov cua sov cua sov. Yog hais tias qhov chaw tiv thaiv muaj cov sib xyaw nrog hydrogen, nws yog ib qhov ua tau rau nqus dej hydrogen thaum kho cov tshuaj sov thiab ua rau muaj kev pheej hmoo ntawm cov kab mob hydrogen ntawm cov fasteners.
Yuav kom tiv thaiv tsis tau cov tshuaj hydrogen, cov zog txuas zog ntawm 1000 mus rau 1300 MPa yuav tsum tsav tsheb hydrogen tom qab electroplating.
Nyob rau hauv qee qhov kev mob, cov khoom siv raw khoom yuav cuam tshuam txog kev xaiv cov txheej txheem kev sib txuas lus, thiab cuam tshuam ncaj qha rau kev ua tau zoo thiab kev ruaj ntseg ntawm cov kev sib txuas siab rau cov tsheb. Thaum lub sijhawm ua ke ntawm tsheb, txoj kev loj hlob thiab kev siv cov tshuab fais fab loj rau cov tsheb kuj muaj cov teeb meem los ntawm cov khoom siv thiab kev tsim khoom.
Fastener manufacturers yuav tsum tsis tu ncua txhim kho lawv cov txheej txheem thiab yees kom thiaj li ua tau raws li cov kev xav tau ntawm lub tuam txhab puas tau loj hlob. Tshwj xeeb tshaj yog nyob rau hauv hnub no txoj kev txhim kho kom zoo, peb yuav tsum nruj tswj tus txheej txheem tsim thiab txhim kho cov khoom qib zoo kom nruj yav tom ntej. Ciaj sia taus nyob hauv kev sib tw ua lag luam kev lag luam!
Peb yuav tsum ntxiv dag zog rau txoj kev tshawb kawm thiab kev tsim khoom ntawm cov khoom siv lub tshuab ua ke, kawm txog kev siv technology, thiab ua kom peb lub teb chaws muaj kev loj hlob zoo.