1. Khoom siv: Ordinary carbon structural steel (Q yield zog), high-quality carbon structural steel (nrog rau qhov nruab nrab carbon loj feem ntawm 20/10000), alloy structural steel (nrog ib tug nruab nrab manganese pawg ntawm kwv yees li 2% nyob rau hauv 20Mn2), cam khwb cia hlau (ZG230-450 tensile zog), tsis muaj tsawg tshaj li 20 yield point. cam khwb cia hlau (HT200 grey cam khwb cia hlau tensile zog).
2. Cov kev kho cua sov feem ntau: annealing (slow txias hauv lub cub tawg), normalizing (txias hauv huab cua), quenching (ces txias hauv dej los yog roj), tempering (reheating quenched ib feem rau ib qho kub hauv qab qhov kub tseem ceeb, tuav rau ib lub sij hawm thiab tom qab ntawd txias hauv huab cua), quenching thiab tempering (cov txheej txheem ntawm quenched, quenched, tempering) nitriding, carbonitriding).
3. Kev ua tsis tiav ntawm cov fasteners: tawg vim lub zog tsis txaus; Ntau dhau elastic lossis yas deformation; Kev hnav ntau dhau, slippage, lossis overheating ntawm kev sib txhuam nto; Kev sib txuas xoob;
4. Fatigue tsis ua hauj lwm tshwm sim: Qhov tsis ua hauj lwm nyob rau hauv qhov kev txiav txim ntawm kev sib txawv ntawm kev ntxhov siab yog hu ua qaug zog tsis ua hauj lwm. Yam ntxwv: Sudden fracture tom qab ntau daim ntawv thov ntawm ib hom kev ntxhov siab; Qhov siab tshaj plaws nyob rau hauv kev ntxhov siab thaum lub sij hawm tawg yog qis dua qhov kev txwv ntawm cov khoom siv; Txawm tias cov ntaub ntawv yas, tsis muaj qhov tseem ceeb ntawm cov yas deformation thaum lawv tawg. Thaum txiav txim siab txog qhov qaug zog, qhov loj ntawm kev ntxhov siab, tus lej ntawm lub voj voog, thiab cov yam ntxwv ntawm lub voj voog yuav tsum raug txiav txim siab.
5. Hom xov: zoo tib yam threads, yeeb nkab threads, rectangular threads, trapezoidal threads, serrated threads.
6. Cov hom kev sib txuas ntawm cov threaded: bolted kev sib txuas (ib txwm bolted kev sib txuas, bolted kev sib txuas nrog hinged qhov), ob lub taub hau bolted kev sib txuas, ntsia hlau sib txuas, thiab kev sib txuas ceev ceev.
7. Anti loosening ntawm threaded kev twb kev txuas: kev sib txhuam los tiv thaiv loosening (caij nplooj ntoos hlav ntxhua khaub ncaws, ob lub txiv ntoo, elliptical tus kheej-locking txiv ntseej, transverse txiav txiv ntseej), mechanical anti loosening (qhib tus pin thiab zawj txiv ntseej, nres tshuab ntxhua khaub ncaws, round txiv ntoo nres washer, serial steel hlau), ruaj khov los tiv thaiv loosening (txhaj hom, kawg vuam txoj kev, kev sib khi txoj kev).
8. Cov txheej txheem los txhim kho lub zog ntawm cov ntsia hlau txuas: zam kom tsis txhob muaj kev ntxhov siab ntxiv; Txo kev ntxhov siab concentration.
9. Kev paub txog kev ua haujlwm tom qab kev kho cua sov: Qhov precision qhov (los ntawm qhov) tom qab quenching yuav tsum tau ua cov hlau txiav; Qhov dig muag qhov yuav tsum tau siv lub tshuab ua ntej quenching thiab precision machining tom qab quenching. Qhov tsis yog qhov tseeb tuaj yeem ua rau hauv qhov chaw ua ntej quenching (tso tawm qhov nyiaj 0.2 hli ntawm ib sab). Qhov nyiaj tsawg kawg nkaus rau kev ua haujlwm tsis zoo ntawm quenched qhov chaw yog 0.4 hli, thiab qhov nyiaj pub dawb rau kev ua haujlwm tsis zoo ntawm cov khoom tsis yog quenched yog 0.2 hli. Lub thickness ntawm cov txheej yog feem ntau 0.005-0.008mm, thiab nws yuav tsum tau ua raws li lub pre-plating qhov ntev.
10. Cov kev xav tau ntawm kev ua haujlwm zoo rau cov bolts zoo tib yam ntawm tib qib yog me ntsis siab dua li cov bolts muaj zog, tab sis cov bolts siab zog muaj qhov kev lees paub ntxiv rau kev cuam tshuam lub zog piv rau cov bolts zoo tib yam. Lub zog ntawm lub zog muaj zog bolts tsis yog nyob rau hauv lawv qhov tsim muaj peev xwm thauj khoom, tab sis nyob rau hauv lub siab nruj, kev nyab xeeb kev ua tau zoo, thiab muaj zog tiv thaiv kev puas tsuaj ntawm lawv cov nodes tsim. Lub ntsiab lus ntawm nws lub zog siab yog tias thaum lub sijhawm ua haujlwm ib txwm muaj, cov node tsis raug tso cai kom dhau los ntawm cov txheeb ze, uas yog, elastic-yas deformation yog me me thiab cov node nruj yog siab. Qhov sib txawv tseem ceeb ntawm lub zog siab bolts thiab cov bolts zoo tib yam tsis yog lub zog ntawm cov khoom siv, tab sis daim ntawv ntawm lub zog siv. Qhov tseem ceeb yog seb puas yuav siv lub zog ua ntej nro thiab siv kev sib txhuam zoo li qub los tiv thaiv shear.
Post lub sij hawm: Jan-06-2025