Galling (kev qaug dab peg) yog ib qho teeb meem tshwm sim thaum sib dhos lossis disassemblingstainless hlau bolts thiab ceev. Thaum galling tshwm sim, ob lub fasteners ua nyuaj heev rau kev sib cais, feem ntau yuav tsum tau bolt txiav los yog txiv ntoo puas tsuaj rau kev tshem tawm, uas cuam tshuam loj heev disassembly efficiency thiab reusability ntawm fasteners. Yog li ntawd, nws yog ib qho tseem ceeb kom paub meej txog cov hauv paus ntsiab lus thiab ua rau lub plab hauv cov hlau tsis huv, thiab tom qab ntawd tsim cov kev tiv thaiv tsim nyog thiab kev sib cais.
1. Cov laj thawj tseem ceeb thiab kev tiv thaiv kev ntsuas rau Galling ntawmStainless hlau fasteners
| Galling Ua | Kev piav qhia luv luv | Kev Tiv Thaiv Tseem Ceeb |
|---|---|---|
| Khoom Khoom | Stainless hlau muaj qhov hardness tsawg, zoo ductility, thiab tsis zoo thermal conductivity (kwv yees li 1/3 ntawm carbon hlau). Frictional cua sov nyiam mloog zoo, ua rau hlau adhesion ntawm xov xov. | Siv cov khoom sib xyaw ua ke (xws li, 304 bolts nrog 316 txiv ntseej) lossis tshwj xeeb los tiv thaiv- cov khoom lag luam. |
| Oxide Txheej Kev puas tsuaj | Qhov kub thiab txias uas tsim los ntawm kev sib txhuam ua kom cov corrosion- tiv taus chromium oxide txheej ntawm stainless hlau qhov chaw, ua rau kev sib cuag ncaj qha ntawm cov hlau substrates thiab "txias vuam" (adhesion). | Siv cov roj nplua nyeem (piv txwv li, molybdenum disulfide, Teflon-raws li lubricants) kom txo tau kev sib txhuam thiab kev tsim hluav taws xob. |
| Kev ua haujlwm tsis raug | Misalignment ntawm lub hauv paus axes thaum lub sij hawm installation, ntau zog, los yog ceev ceev ceev generates loj npaum li cas ntawm frictional tshav kub, exacerbating adhesion. | Khaws cov txiv ntoo perpendicular mus rau lub bolts, siv lub torque wrenches, maj mam maj mam thiab sib npaug, thiab tsis txhob cuam tshuam wrenches. |
| Xov xwm xwm txheej | Burrs, kev puas tsuaj, los yog txawv teb chaws xws li hlau shavings ntawm threads khawb qhov chaw thiab hinder smooth kev koom tes. | Xyuas kom cov xov yog huv si; tshuaj xyuas thiab ntxuav cov xov ua ntej sib dhos. |
2. Kev tiv thaiv kev tiv thaiv kom tsis txhob muaj kev kub ntxhov
Txhawm rau tiv thaiv galling zoo, cov kev ntsuas tshwj xeeb hauv qab no tuaj yeem siv tau:
Tswj Perpendicularity thiab Alignment: Thaum lub sij hawm installation, xyuas kom meej lub hauv paus axis ntawm lub ntsia liaj qhov rooj los yog txiv ntseej yog perpendicular mus rau lub mating nto kom txo qis qaij. Txhua qhov deflection yuav txo tau cov xov sib tiv tauj thiab ua rau muaj zog hauv zos, uas yooj yim ua rau cov qhab nia thiab galling.
Tswj torque thiab ceev: Tsis txhob siv cov wrenches cuam tshuam rau ceev ceev. Nws raug nquahu kom siv torque wrenches lossis socket wrenches kom nruj ntawm qhov sib xws, qeeb qeeb (hauv qab 20-30 RPM pom zoo), ua kom lub zog nyob rau hauv qhov chaw nyab xeeb kom tswj tau cov cua sov kom zoo.
Lubrication zoo: Siv cov roj nplua nyeem uas tsim nyog (xws li molybdenum disulfide, graphite, Teflon-raws li lossis tshwj xeeb los tiv thaiv-galling compounds) rau cov xov. Qhov no txo qis kev sib txhuam coefficient, txo qis kev tsim hluav taws xob, thiab tiv thaiv kev sib cuag hlau ncaj qha rau lub sijhawm. Tsis txhob siv cov roj zoo tib yam lossis cov roj cav uas dries yooj yim.
Cov khoom sib txuam thiab ntxuav: Yog ua tau, sivbolts thiab txiv ntseejntawm cov khoom sib txawv (xws li, 304 bolts nrog 316 txiv ntseej) los hloov cov khoom sib cuam tshuam cov yam ntxwv. Tsis tas li ntawd, ua tib zoo ntxuav cov xov ua ntej kev teeb tsa kom tshem tawm cov hlau shavings, khib nyiab, lossis burrs.
3. Disassembly Methods rau Galled Stainless Hlau Bolts thiab Ceev
Thaum galling tshwm sim, kev sib cais stainless hlau fasteners yog qhov nyuaj heev, feem ntau yuav tsum tau tshem tawm kev puas tsuaj. Txawm li cas los xij, nyob rau hauv cov xwm txheej uas qhov kev puas tsuaj ntawm lub bolt tsis xav tau, cov hauv qab no tsis yog -kev puas tsuaj lossis kev tswj hwm- txoj kev puas tsuaj tuaj yeem sim:
Xov Loosener Lubrication: Txhuam tshuaj tsuag xov loosener (xws li, kerosene, nkag mus rau cov roj) mus rau cov xov txuas, kom ntseeg tau qhov siab tshaj plaws nkag mus rau hauv xov qhov khoob. Coj mus rhaub ib ncig ntawm lub txiv ntoo nrog lub roj hmab mallet los tsim kev co. Tom qab tso cai rau nws tsau rau kwv yees li 30 feeb, sim tshem cov txiv ntoo. Txoj kev no muaj txiaj ntsig zoo rau cov corroded fasteners tab sis muaj kev txwv tsis pub muaj kev cuam tshuam rau cov kab mob ntshiab.
Thermal Expansion Disassembly: Rau cov txiv ntoo tsis teb rau loosener, hauv zos sov cov txiv ntoo nrog lub teeb kom nthuav nws txoj kab uas hla, ces sim tshem tawm. Txoj kev no tsuas yog txwv los ntawm qhov chaw nyob, xav tau kev pom zoo tias kev ua haujlwm kub tau tso cai thiab cov khoom nyob ib puag ncig thiab cov khoom sib txuas tuaj yeem tiv taus qhov kub thiab txias.
Cov cuab yeej tshwj xeeb Disassembly: Siv cov cuab yeej tshwj xeeb xws litxiv ntseejsplitters cais cov txiv ntoo los ntawm lub bolt los ntawm kev nce qib ntawm kev siv tshuab lossis hydraulic quab yuam. Hydraulic txiv ntseej splitters yooj yim thiab ua haujlwm -txuag. Txhawm rau khaws cov ntsia liaj qhov rooj kom zoo, ua kom zoo rau kev ua haujlwm: tsuas yog siv me ntsis siab kom deform lub txiv ntoo pom, ces nres tam sim ntawd. Qhov no tso cai rau kev tshem tawm cov txiv ntoo nrog kev puas tsuaj tsawg kawg rau cov bolt threads.
4. Cov ntsiab lus
Galling ntawm stainless hlau bolts thiab txiv ntseej yog tsis tsim nyog. Los ntawm kev nkag siab txog cov khoom siv thiab kev sib txhuam mechanisms tom qab nws, thiab nruj me ntsis ua raws li cov hauv paus ntsiab lus ntawmKev huv huv, kev sib dhos, qeeb ceev, thiab lubricationthaum lub sijhawm ua haujlwm, qhov teeb meem no tuaj yeem tiv thaiv tau zoo.
