Cov khoom hloov kho thiab Corrosion Resistance Strengthening Technology rau txawv Corrosive ib puag ncig ntawm Spring Clips
Dab tsi yog qhov kev taw qhia ntawm cov hlau alloy zoo -tuning rau cov khoom siv elastic strip 60Si2MnA?
Cov kev taw qhia ntawm cov khoom siv hlau zoo-tuning rau cov khoom siv elastic strip 60Si2MnA yog los txhim kho lub zog, tawv thiab qaug zog. Lub hauv paus tseem ceeb yog kho kom raug cov ntsiab lus ntawm silicon, manganese, chromium, phosphorus, sulfur thiab lwm yam khoom, thiab kev nplua -tuning range yog nruj me ntsis tswj nyob rau hauv lub teb chaws tus qauv. Silicon yog lub hauv paus tseem ceeb los txhim kho elasticity thiab lub zog ntawm lub caij nplooj ntoos hlav steel. Cov ntsiab lus silicon ntawm ib txwm 60Si2MnA yog 1.50%-2.00%. Tom qab zoo-tuning, cov ntsiab lus silicon yog tswj ntawm 1.80%-2.00%, uas ntxiv dag zog rau cov hlau hardenability thaum ua kom elasticity, ua rau tag nrho cov kev ua tau zoo ntawm cov elastic strip zoo sib xws tom qab quenching. Manganese tuaj yeem txhim kho lub zog thiab hnav tsis kam ntawm cov hlau. Cov ntsiab lus ib txwm muaj ntawm 0.60%-0.90% yog qhov zoo-tuned rau 0.70%-0.90%, uas txhim kho lub peev xwm los tiv thaiv deformation ntawm elastic strips thiab yoog mus rau qhov loj load nyhuv ntawm hnyav-haul kab. Ib qho ntxiv ntawm chromium (0.10% -0.20%) yog ntxiv. Chromium tuaj yeem tsim cov carbide nrog cov pa roj carbon hauv cov hlau, ua kom cov nplej zoo dua, txhim kho lub zog thiab qaug zog ntawm cov hlua elastic, thiab tsis txhob microcracks hauv cov hlua elastic hauv qab vibration load. Nyob rau tib lub sijhawm, cov ntsiab lus ntawm cov ntsiab lus tsis zoo xws li phosphorus thiab sulfur yog nruj me ntsis txo, cov ntsiab lus phosphorus raug tswj tsawg dua lossis sib npaug li 0.010%, thiab cov ntsiab lus sulfur tsawg dua lossis sib npaug li 0.008%, qis dua li lub teb chaws tus qauv yuav tsum muaj tsawg dua lossis sib npaug li 0.025%, uas txo qis cov ntsiab lus ntawm brittle boundary. ntawm elastic strip. Qhov zoo-tuning ntawm cov hlau alloy no tsis yog ib qho kev hloov kho, tab sis kev sib koom ua kom zoo ntawm ntau lub ntsiab lus, paub txog kev txhim kho ntawm lub zog, toughness thiab qaug zog tiv thaiv ntawm lub hauv paus ntawm tsis hloov cov kev ua tau zoo ntawm 60Si2MnA.
Cov txheej txheem dab tsi yog siv rau cov qauv metallographic optimization ntawm elastic strip puag khoom?
Cov qauv metallographic optimization ntawm elastic strip puag cov khoom siv feem ntau siv peb txheej txheem: spheroidizing annealing, isothermal quenching thiab qis -kub tempering. Peb cov txheej txheem sib koom ua ke los ua kom zoo dua cov qauv metallographic ntawm cov khoom siv hauv paus rau hauv cov txheej txheem tempered troostite thiab txhim kho cov khoom siv txhua yam. Spheroidizing annealing yog txheej txheem pretreatment rau metallographic optimization. Lub 60Si2MnA puag ncig steel yog rhuab mus rau 780-800 degree, khaws cia sov li 3-4 xuab moos thiab tom qab ntawd txias maj mam, kom cov pearlite qauv hauv cov hlau yog spheroidized los ua ib tug kheej kheej kheej kheej pearlite, uas txo cov hardness ntawm cov hlau, txhim kho plasticity thiab txias bending kev ua tau zoo, muab cov txheej txheem zoo sib xws, thiab kev ua haujlwm zoo. tsim. Isothermal quenching yog cov txheej txheem tseem ceeb. Tom qab qhov khoob tom qab spheroidizing annealing yog rhuab mus rau 850-880℃rau austenitization, nws yog sai sai muab tso rau hauv ib tug nitrate da dej ntawm 260-280℃rau isothermal txias, thiaj li hais tias austenite hloov mus rau hauv qis bainite. Cov qauv qis bainite muaj ob qho tib si siab zog thiab siab tawv, thiab tuaj yeem ua rau lub elastic strip dais rov qab vibration load yam tsis muaj qaug zog tawg. Tsawg-kub tempering yog txheej txheem stabilization tom ntej. Lub elastic strip tom qab isothermal quenching yog rhuab mus rau 200-220 degree, cia sov rau 2 teev thiab tom qab ntawd cua-txias, hloov lub qis bainite qauv mus rau hauv tempered troostite, tshem tawm quenching nyob rau hauv kev ntxhov siab, stabilizing qhov loj thiab kev ua tau zoo ntawm elastic strip, thiab tsis txhob deformation ntawm elastic kev pab cuam nyob rau hauv lub strips. Qhov kub thiab tuav lub sij hawm ntawm peb txheej txheem yuav tsum raug tswj kom raug. Kev sib txawv ntawm qhov kub thiab txias los yog lub sijhawm tuav tsis txaus yuav ua rau cov qauv hlau tsis sib xws thiab cuam tshuam rau qhov kawg ntawm kev ua haujlwm ntawm elastic strip.
Dab tsi yog cov txheej txheem tseem ceeb ntawm corrosion kuj ntxiv dag zog rau elastic strips nyob rau hauv ntug dej hiav txwv siab - ntsev tsuag ib puag ncig?
Cov txheej txheem tseem ceeb ntawm corrosion kuj ntxiv dag zog rau elastic strips nyob rau hauv cov ntug dej hiav txwv siab - ntsev tsuag ib puag ncig yog txais yuav ib tug ob - txheej txheej txheej txheej txheej txheej ntawm "dacromet txheej + kaw txheej". Cov txheej txheem no tuaj yeem cais cov tshuaj chloride ions hauv cov tshuaj ntsev kom zoo los ntawm kev tiv tauj cov khoom siv elastic thiab txhim kho kev tiv thaiv pitting thiab crevice corrosion. Dacromet txheej yog thawj txheej ntawm kev tiv thaiv. Lub strip elastic yog immersed nyob rau hauv dacromet txheej kua uas muaj zinc hmoov, txhuas hmoov, chromate, thiab lwm yam. Tom qab ci thiab kho, ib tug silver -grey txheej nrog ib tug tuab ntawm 8-10μm yog tsim nyob rau saum npoo ntawm elastic strip. Zinc hmoov nyob rau hauv txheej yog ib tug sacrificial anode, uas corrodes ua ntej los tiv thaiv lub hauv paus khoom. Aluminium hmoov tuaj yeem kho cov txheej txheem txheej txheej thiab txhim kho lub compactness ntawm txheej. Chromate tuaj yeem tsim cov yeeb yaj kiab passivation los txhim kho cov kev tiv thaiv{21}}corrosion ntxiv. Cov txheej txheej kaw yog txheej thib ob ntawm kev tiv thaiv. Ib txheej ntawm cov organic sealant nrog lub thickness ntawm 2-3μm yog sprayed rau saum npoo ntawm dacromet txheej. Lub sealant tuaj yeem sau cov pores me me ntawm dacromet txheej, tsim cov yeeb yaj kiab tiv thaiv seamless, tshem tawm tag nrho cov kev sib cuag ntawm cov tshuaj chloride ions, dej thiab cov khoom siv hauv paus, thiab txhim kho cov ntsev tshuaj tiv thaiv ntawm txheej. Nyob rau tib lub sijhawm, lub elastic strip yog kom huv si degreased, derusted thiab phosphated ua ntej txheej los xyuas kom meej lub nto ntawm lub hauv paus cov ntaub ntawv yog huv si, txhim kho lub sib raug zoo lub zog ntawm lub txheej thiab lub hauv paus cov ntaub ntawv, thiab tsis txhob txheej ntog. Cov kab xev elastic kho los ntawm cov txheej txheem no tuaj yeem dhau qhov nruab nrab ntsev tshuaj tsuag rau ntau tshaj 1000h yam tsis muaj xeb liab, tuaj yeem ua haujlwm ruaj khov rau ntau tshaj 15 xyoo nyob rau hauv cov ntug dej hiav txwv high- ntsev tsuag ib puag ncig, thiab lub neej corrosion kuj nce 2 zaug piv nrog cov tsoos kub-dip galvanized elastic strip.
Dab tsi yog qhov txawv ntawm cov txheej txheem corrosion ntawm elastic strips ntawm cov av ntub dej thiab mining plua plav ib puag ncig?
Qhov sib txawv ntawm cov txheej txheem corrosion kuj ntawm elastic strips ntawm cov av noo thiab mining plua plav ib puag ncig yog xav txog peb yam: txoj kev kho saum npoo, txheej hardness thiab kev tiv thaiv tsom. Txhua yam yog tsim txawv raws li cov yam ntxwv ntawm corrosion ntawm ib puag ncig thiab precisely hloov mus rau qhov kev xav tau ntawm cov chaw sib txawv. Lub hauv paus ntawm corrosion nyob rau hauv cov av noo ib puag ncig yog electrochemical corrosion tshwm sim los ntawm kev sib cuag ntawm dej thiab huab cua, tsis pom kev puas tsuaj. Cov txheej txheem corrosion kuj tau txais cov txheej txheem "electrogalvanizing + xim passivation". Electrogalvanizing tsim ib txheej zinc nrog lub thickness ntawm 10-12μm ntawm qhov chaw ntawm elastic strip los tiv thaiv cov khoom siv los ntawm kev txi anode. Xim passivation tsim cov xim passivation zaj duab xis rau saum npoo ntawm zinc txheej los kaw qhov pores ntawm zinc txheej thiab txhim kho qhov tsis kam mus rau cov av noo. Cov txheej txheem no muaj tus nqi nruab nrab, kev tiv thaiv{11}} cov nyhuv corrosion tuaj yeem ua tau raws li qhov xav tau ntawm cov av noo ib puag ncig, thiab txheej txheej yog du thiab tsis yooj yim rau nqus dej. Lub corrosion nyob rau hauv mining plua plav ib puag ncig muaj xws li tsis tsuas yog electrochemical corrosion los ntawm cov av noo, tab sis kuj abrasion los ntawm kev sib txhuam ntawm plua plav hais thiab nto ntawm elastic strip. Kev tiv thaiv tsom xam yog "tiv thaiv-corrosion + hnav tsis kam". Cov txheej txheem corrosion kuj tau txais cov txheej txheem "thermal spray zinc + ceramic txheej". Thermal spray zinc tsim ib txheej zinc nrog lub thickness ntawm 15-20μm ntawm qhov chaw ntawm elastic strip kom ua tiav los tiv thaiv- tiv thaiv corrosion. Ceramic txheej tsim cov alumina ceramic txheej nrog lub thickness ntawm 5-8μm ntawm cov zinc txheej. Cov txheej txheej ceramic muaj qhov hardness ntawm ntau tshaj HV800, uas tuaj yeem tiv taus qhov tawg ntawm cov plua plav thiab zam cov zinc txheej poob nws cov nyhuv tiv thaiv corrosion vim hnav thiab poob tawm. Tsis tas li ntawd, cov txheej txheem kev sib txuas lub zog ntawm mining elastic strips yuav tsum siab dua. Qhov saum npoo ntawm elastic strips yuav tsum tau xuab zeb blasted thiab roughened ua ntej txheej los txhim kho lub zog sib txuas ntawm cov txheej thiab cov khoom siv hauv paus, thaum cov khoom siv hauv av elastic tsuas yog xav tau kev kho phosphating. Kev hloov kho ntawm ob txoj kev ua rau cov hlua elastic kom ua tiav qhov sib npaug ntawm kev tiv thaiv corrosion thiab kev ua haujlwm nyob rau hauv ib puag ncig sib txawv, tsis txhob raug nqi pov tseg los ntawm kev tiv thaiv ntau dhau.
Dab tsi yog qhov sib xyaw ua ke ntawm cov khoom hloov kho thiab qhov chaw corrosion kuj ntxiv dag zog rau elastic strips?
Kev hloov kho cov khoom thiab qhov chaw corrosion kuj ntxiv dag zog rau elastic strips tsis muaj nyob ntawm nws tus kheej, thiab ob qho tib si qhia tau hais tias muaj kev sib koom ua haujlwm siab. Cov tub ntxhais yog "kev txhim kho ntawm cov khoom siv hauv paus kev ua tau zoo raws li lub hauv paus thiab kev tiv thaiv saum npoo raws li qhov lav", uas sib koom ua ke txhim kho cov kev pabcuam kev ua haujlwm ntawm elastic strips. Cov khoom hloov kho txhim kho lub zog, toughness thiab qaug zog tsis kam ntawm elastic strip puag cov khoom siv los ntawm cov khoom siv hlau zoo -tuning thiab metallographic qauv optimization, ua rau cov hlua elastic kom dais rov qab vibration load ntawm txoj kab thiab zam kev qaug zog tawg los ntawm cov khoom siv hauv paus tsis txaus, uas muab cov khoom siv ruaj khov rau saum npoo corrosion kuj ntxiv zog. Yog tias cov khoom siv hauv paus nws tus kheej muaj qhov tsis zoo thiab ua rau microcracks nyob rau hauv kev co, nws yuav ua rau cov txheej txheem tawg thiab poob ntawm kev tiv thaiv - cov nyhuv corrosion. Nto corrosion kuj ntxiv zog cais kev sib cuag ntawm corrosive media thiab cov khoom siv los ntawm cov txheej txheem kev kho deg sib txawv, tiv thaiv cov qauv metallographic thiab alloy ntawm cov khoom siv los ntawm corrosion, zam qhov txo qis ntawm lub zog thiab tawv ntawm cov khoom siv vim corrosion, thiab xyuas kom meej tias cov nyhuv ntawm cov khoom hloov kho tuaj yeem tswj tau ntev. Yog tias tsis muaj kev tiv thaiv saum npoo, cov khoom siv hloov pauv yuav xeb sai sai hauv qhov chaw corrosive, thiab nws cov khoom siv zoo heev tsis tuaj yeem ua haujlwm. Nyob rau tib lub sijhawm, qhov tawv tawv ntawm cov hlua elastic yog txhim kho tom qab cov khoom siv hloov kho, uas tuaj yeem txhim kho lub zog sib txuas nrog cov txheej txheem thiab zam lub txheej ntog vim qhov deformation ntawm cov khoom siv hauv qab vibration load. Qhov muaj nyob ntawm txheej txheej tuaj yeem txo qhov kev ntxhov siab ntawm qhov chaw ntawm elastic strip thiab ntxiv dag zog rau kev qaug zog ntawm cov hlua elastic. Tsis tas li ntawd, cov nyhuv synergistic ntawm ob ua rau lub elastic strip kom tau raws li qhov yuav tsum tau ntawm txhua yam khoom thiab corrosion kuj nyob rau tib lub sij hawm nyob rau hauv txawv kev ua hauj lwm tej yam kev mob thiab corrosive ib puag ncig, zoo heev prolongs lub neej kev pab cuam ntawm lub elastic strip, txo qhov zaus ntawm kev tu thiab hloov, thiab txo tus nqi khiav lag luam.