Yuav Ua Li Cas Kho Ib Crankshaft Hnav?

Feem ntau hais lus, cov ntawv xov xwm txoj kab uas hla yog tsawg dua 80mm, thiab qhov sib npaug thiab lub tog raj kheej yuam kev tshaj 0.025mm; Los yog cov ntawv xov xwm txoj kab uas hla yog ntau tshaj 80 mm. Crankshafts nrog roundness thiab cylindricity yuam kev ntau tshaj 0.0400 yuav tsum tau muab tso rau hauv lub qhov ntev los yog hauv av mus rau qhov ntev los yog kho tom qab vibration surfacing, chromium plating, thiab hlau plating.

Sib tsoo ntawm crankshaft

Kev sib tsoo ntawm crankshaft phau ntawv journal yog ua los ntawm kev kho crankshaft. Ntxiv rau qhov ua tau raws li qhov yuav tsum tau ua rau qhov raug qhov tseeb thiab qhov roughness ntawm cov ntawv xov xwm, kev sib tsoo ntawm lub crankshaft tseem yuav tsum tau ua raws li cov kev cai rau geometric tolerances. Thaum sib tsoo lub crankshaft, nws yog ib qhov tsim nyog los xyuas kom meej lub coaxiality ntawm lub ntsiab phau ntawv xov xwm thiab txuas qws ntawv xov xwm axes thiab parallelism ntawm ob shafts, thiab txwv tsis pub radial yuam kev ntawm lub crank. Xyuas kom meej qhov tseeb ntawm lub kaum sab xis ntawm txoj hauj lwm ntawm cov ntawv xov xwm txuas txuas. Kev sib tsoo ntawm lub crankshaft feem ntau yog nqa tawm ntawm lub siab crankshaft grinder.

Sib tsoo ntawm kev sib txuas qws phau ntawv journal

Vim qhov tsis sib xws ntawm cov ntawv xov xwm txuas txuas, muaj ob txoj kev sib tsoo: eccentric sib tsoo thiab sib tsoo concentric.

Txoj kev sib tsoo concentric yog ua kom lub axis txoj hauj lwm ntawm cov ntawv xov xwm txuas txuas tsis hloov tom qab sib tsoo, uas yog, lub vojvoog ntawm lub crank thiab lub kaum sab xis tsis hloov pauv. Thaum sib tsoo lub crankshaft ntawm lub cav diesel, cov txheej txheem concentric feem ntau yog siv los ua kom lub vojvoog ntawm lub crankshaft tsis hloov thiab compression piv ntawm lub cav diesel tsis hloov, tab sis tus nqi sib tsoo loj txhua zaus. Tam sim no, txo tus naj npawb ntawm cov kev kho loj thaum lub sijhawm ua haujlwm ntawm lub tsheb tuaj yeem ua kom ntseeg tau tias lub cav ua haujlwm tseem tsis hloov pauv los ntawm kev siv txoj hauv kev concentric.

Txoj kev sib tsoo eccentric ua qhov chaw sib tsoo raws li qhov hnav ntawm cov ntawv xov xwm txuas txuas. Lub sijhawm no, txoj haujlwm hauv nruab nrab ntawm phau ntawv xov xwm thiab lub vojvoog crank tau hloov pauv. Feem ntau, lub vojvoog crank tom qab sib tsoo yog loj dua qhov qub crank vojvoog, ua kom cov compression piv, thiab ua rau tsis sib xws ntawm txhua lub tog raj kheej. Nyob rau tib lub sijhawm, qhov nruab nrab ntawm qhov loj ntawm tag nrho cov crankshaft tsis nyob rau hauv nruab nrab ntawm lub crankshaft phau ntawv journal, ua rau muaj kev tsis txaus thiab ntxiv dynamic load thaum lub sij hawm ua hauj lwm ntawm lub crankshaft. Yog li ntawd, thaum sib tsoo cov ntawv xov xwm sib txuas, qhov nce ntawm lub vojvoog crank yuav tsum raug txo kom tsawg, thiab cov coaxiality yuam kev ntawm tib lub voj voog txuas txuas yuav tsum tsis txhob siab dua 0.10 hli los xyuas kom meej qhov sib npaug ntawm lub crankshaft. thaum ua haujlwm.

Yuav ua li cas kho lub crankshaft hnyav hnyav?

Yog hais tias lub cav crankshaft hnyav hnyav thiab tsis tuaj yeem kho los ntawm kev sib tsoo lossis tsis zoo, cov tshuaj tsuag plasma tuaj yeem siv los kho nws.

(1) Kev kho deg ntawm sprayed pem hauv ntej qag phau ntawv journal

① Raws li kev hnav ntawm phau ntawv xov xwm, nws yog sib npaug ntawm lub crankshaft grinder, thiab txoj kab uas hla feem ntau yog txo los ntawm 0 50-1 00 mm.

② Cov ntaub thaiv npog thiab tiv thaiv cov ntaub ntawv uas nyob ib sab ntawm cov ncej kom coated nrog tooj liab.

③ Siv lub tshuab roughening los roughen saum npoo yuav coated. Siv cov nickel pas nrig ua ib qho electrode, yaj npib tsib xee rau saum npoo ntawm phau ntawv xov xwm nyob rau hauv ib qho kev hloov tam sim no ntawm 6 txog 9 V thiab 200 txog 300 A.

(2) Txau

Clamp lub crankshaft ntawm lub rooj zaum ua haujlwm thiab kho qhov kev ncua deb ntawm rab phom txau thiab cov khoom ua haujlwm (kwv yees li 100mm). Nickel clad aluminium (Ni / Al) raug xaiv los ua cov khoom siv hauv paus, thiab kev sib xyaw ntawm hnav-resistant alloy cam khwb cia hlau (NT) thiab npib tsib xee clad aluminium raug xaiv los ua cov khoom ua haujlwm. Lub thickness ntawm cov txheej hauv qab feem ntau yog nyob ib ncig ntawm 0.20mm, thiab cov thickness ntawm cov txheej txheem ua haujlwm nyob ntawm qhov xav tau.

Thaum lub sij hawm txau, qhov kub ntawm cov ntawv xov xwm txau yuav tsum tau tswj ntawm 150 ~ 170 degree. Cov tshuaj tsuag crankshaft khaws cia rau hauv qhov cub ntawm 150-180 degree rau 2 teev thiab txias nrog lub qhov cub kom txo tau qhov kev ntxhov siab ntawm cov tshuaj tsuag txheej thiab cov ntawv sau.

(3) Kev kho mob tom qab txau

Tom qab tshuaj tsuag, xyuas seb cov tshuaj tsuag puas yog nruj nreem khi rau hauv phau ntawv xov xwm substrate. Yog tias tsis yog, tshem tawm thiab rov ua dua. Yog tias tsim nyog, lub crankshaft tuaj yeem ua hauv av. Vim lub siab hardness ntawm cov plasma sprayed coatings, mos tin carbide sib tsoo lub log feem ntau yog siv rau kev sib tsoo, thiab cov pub ceev thaum sib tsoo yuav tsum me me (0.05-0.10mm) kom tsis txhob txheej tawg. Tsis tas li ntawd, polished roj qhov yuav tsum tau polished nrog ib tug xuab zeb sawb los tiv thaiv burrs los ntawm khawb cov pobzeb ceramic. Tom qab ntxuav, raus lub crankshaft hauv lubricating roj ntawm 80-100 degree thiab boil rau 8-10 teev. Tom qab cov roj lubricating tau nkag mus rau hauv cov txheej txheem, nws tuaj yeem thauj khoom siv.