Kev cuam tshuam ntawm cov kua polymer quenching rau kev ua haujlwm ntawm cov saw hlau

Kev cuam tshuam ntawm cov kua polymer quenching rau kev ua haujlwm ntawm cov saw hlau
Hauv kev lag luam kev lag luam,cov saw hlauyog ib qho tseem ceeb ntawm kev sib kis, thiab nws cov kev ua tau zoo muaj feem cuam tshuam ncaj qha rau kev ua haujlwm zoo thiab kev ruaj khov ntawm cov khoom siv kho tshuab. Raws li qhov txuas tseem ceeb los txhim kho kev ua tau zoo ntawm cov saw hlau, kev xaiv thiab kev siv cov kua quenching hauv cov txheej txheem kho cua sov ua lub luag haujlwm tseem ceeb. Raws li cov khoom siv quenching, cov kua polymer quenching maj mam siv dav hauv kev kho cua sov ntawm cov saw hlau. Tsab xov xwm no yuav tshawb nrhiav tob txog li cas cov kua polymer quenching cuam tshuam rau kev ua tau zoo ntawm cov saw hlau.

1. Cov ntaub ntawv thiab cov kev cai ua tau zoo ntawm cov saw hlau
Cov saw hlau feem ntau yog ua los ntawm cov hlau carbon, cov hlau alloy thiab lwm yam khoom siv. Tom qab ua tiav thiab tsim, cov ntaub ntawv no yuav tsum tau kho cua sov kom txhim kho lawv qhov nyuaj, tiv taus kev hnav, tiv taus kev qaug zog thiab lwm yam khoom kom ua tau raws li qhov yuav tsum tau siv hauv ntau yam kev ua haujlwm sib txawv. Piv txwv li, hauv cov kab ke kis ceev ceev thiab hnyav, cov saw hlau yuav tsum muaj qhov nyuaj thiab lub zog siab dua kom tiv taus kev nruj thiab kev cuam tshuam loj; hauv qee cov khoom siv uas pib thiab nres ntau zaus, kev tiv taus kev qaug zog zoo tuaj yeem ua kom cov saw hlau siv tau ntev.

2. Txheej txheem cej luam ntawm cov kua polymer quenching
Cov kua polymer quenching yog ua los ntawm cov polyether non-ionic high molecular polymer (PAG) ntxiv rau cov khoom sib xyaw uas tuaj yeem tau txais lwm yam khoom siv pabcuam thiab dej kom txaus. Piv nrog cov roj quenching thiab dej ib txwm muaj, cov kua polymer quenching muaj ntau yam zoo xws li kev hloov kho qhov ceev txias, kev tiv thaiv ib puag ncig, thiab tus nqi siv qis. Nws cov yam ntxwv txias yog nyob nruab nrab ntawm dej thiab roj, thiab nws tuaj yeem tswj tau qhov ceev txias thaum lub sijhawm quenching ntawm cov khoom ua haujlwm, txo qhov deformation thiab tawg ntawm cov khoom ua haujlwm.

3. Cov nyhuv ntawm cov kua polymer quenching rau kev ua haujlwm ntawm cov saw hlau
(I) Kev tawv thiab lub zog
Thaum cov saw hlau raug quenched hauv cov kua polymer quenching, cov polymer hauv cov kua quenching yuav yaj thaum kub siab thiab tsim cov txheej nplua nuj dej rau ntawm qhov chaw ntawm cov saw hlau. Cov txheej no tuaj yeem kho qhov txias ntawm cov saw hlau kom nws qhov txias hauv qhov ntau ntawm kev hloov pauv martensitic yog qhov nruab nrab, yog li tau txais cov qauv martensitic sib xws thiab zoo tagnrho. Piv nrog rau kev quenching dej, cov kua polymer quenching tuaj yeem txo qhov txias quenching, txo qhov kev ntxhov siab quenching, thiab zam kev tawg quenching los ntawm kev txias ceev ntawm cov saw hlau; piv nrog roj quenching, nws qhov txias ceev yog qhov ceev, thiab nws tuaj yeem tau txais qhov nyuaj thiab lub zog siab dua. Piv txwv li, qhov nyuaj ntawm cov saw hlau quenched nrog cov kua polymer quenching tsim nyog tuaj yeem ncav cuag ntau ntawm HRC30-HRC40. Piv nrog rau cov saw hlau uas tsis tau quenched lossis siv lwm yam quenching media, qhov nyuaj thiab lub zog tau zoo dua, yog li txhim kho lub peev xwm bearing thiab hnav tsis kam ntawm cov saw hlau.
(II) Hnav tsis kam
Kev tiv thaiv kev hnav zoo yog qhov tseem ceeb rau kev ua haujlwm ib txwm ntawm cov saw hlau. Cov zaj duab xis polymer uas tsim los ntawm cov kua polymer quenching ntawm qhov chaw ntawm cov saw hlau tsis tsuas yog tuaj yeem kho qhov txias xwb, tab sis kuj txo qhov oxidation thiab decarburization ntawm cov saw hlau thaum lub sijhawm quenching mus rau qee qhov, thiab tswj cov hlau ua haujlwm thiab kev ncaj ncees ntawm cov saw hlau nto. Hauv cov txheej txheem siv tom qab, qhov nyuaj ntawm cov saw hlau quenched nrog cov kua polymer quenching yog siab dua, uas tuaj yeem tiv taus kev sib txhuam thiab hnav ntawm cov saw hlau thiab cov phaj saw hlau, tus pin ncej thiab lwm yam khoom, thiab txuas lub neej ua haujlwm ntawm cov saw hlau. Tib lub sijhawm, qhov sib xws quenching microstructure faib kuj pab txhim kho qhov kev tiv thaiv kev hnav tag nrho ntawm cov saw hlau, yog li nws tseem tuaj yeem tswj tau qhov tseeb kis tau zoo thiab ua haujlwm tau zoo thaum lub sijhawm ua haujlwm ntev.
(III) Kev qaug zog tsis kam
Nyob rau hauv qhov xwm txheej ua haujlwm tiag tiag, cov saw hlau feem ntau raug kev nyuaj siab khoov thiab kev nyuaj siab tensile, uas yuav tsum tau cov saw hlau kom muaj kev tiv thaiv kev qaug zog zoo heev. Cov kua polymer quenching tuaj yeem txo cov kev ntxhov siab seem hauv cov saw hlau los ntawm kev tswj hwm kev faib tawm kev ntxhov siab thaum lub sijhawm txias quenching, yog li txhim kho lub zog qaug zog ntawm cov saw hlau. Qhov muaj kev ntxhov siab seem yuav cuam tshuam rau qhov pib tawg qaug zog thiab tus cwj pwm nthuav dav ntawm cov saw hlau hauv qab lub nra hnyav cyclic, thiab kev siv cov kua polymer quenching tsim nyog tuaj yeem ua kom zoo dua qhov xwm txheej ntxhov siab seem ntawm cov saw hlau, yog li nws tuaj yeem tiv taus ntau lub voj voog yam tsis muaj kev puas tsuaj qaug zog thaum raug kev ntxhov siab hloov pauv. Cov kev tshawb fawb sim tau qhia tias lub neej tawg ntawm cov saw hlau kho nrog cov kua polymer quenching hauv kev sim qaug zog tuaj yeem ntev dua ntau zaus lossis txawm tias ntau dua li piv rau cov saw hlau tsis kho, uas yog qhov tseem ceeb heev rau kev txhim kho kev ntseeg siab ntawm cov khoom siv kho tshuab thiab txo cov nqi txij nkawm.
(IV) Kev ruaj khov ntawm qhov ntev
Thaum lub sijhawm quenching, qhov tseeb ntawm cov saw hlau yuav raug cuam tshuam los ntawm ntau yam xws li qhov txias thiab kev ntxhov siab quenching. Vim tias qhov txias ntawm cov kua polymer quenching yog qhov sib xws thiab hloov kho tau, nws tuaj yeem txo qhov kev ntxhov siab thermal thiab kev ntxhov siab ntawm cov qauv ntawm cov saw hlau thaum lub sijhawm quenching, yog li txhim kho qhov ruaj khov ntawm cov saw hlau. Piv nrog rau kev quenching dej, cov kua polymer quenching tuaj yeem txo qhov quenching deformation ntawm cov saw hlau thiab txo cov haujlwm kho tom qab; piv nrog rau kev quenching roj, nws qhov txias sai dua, uas tuaj yeem txhim kho qhov nyuaj thiab lub zog ntawm cov saw hlau raws li lub hauv paus ntawm kev ua kom muaj kev ruaj khov ntawm qhov ntev. Qhov no ua rau cov saw hlau ua tau raws li qhov xav tau ntawm kev tsim qauv loj tom qab quenching nrog cov kua polymer quenching, txhim kho qhov tseeb ntawm kev sib dhos thiab kev sib kis, thiab xyuas kom meej tias cov khoom siv kho tshuab ua haujlwm zoo.

4. Cov yam ntxwv cuam tshuam rau kev ua haujlwm ntawm cov kua polymer quenching ntawm cov saw hlau
(I) Kev ua kom cov kua qaub ntau ntxiv
Qhov concentration ntawm cov kua polymer quenching yog ib qho ntawm cov yam tseem ceeb uas cuam tshuam rau nws qhov kev ua haujlwm txias thiab cov nyhuv quenching ntawm cov saw hlau. Feem ntau, qhov concentration ntawm cov kua quenching siab dua, cov polymer ntau dua, cov txheej tuab dua, thiab qhov qeeb dua qhov txias. Cov saw hlau ntawm cov khoom sib txawv thiab cov lus qhia yuav tsum xaiv qhov concentration ntawm cov kua quenching kom ua tiav qhov kev ua haujlwm quenching zoo tshaj plaws. Piv txwv li, rau qee cov saw hlau me me uas muaj lub teeb, qhov concentration qis dua ntawm cov kua polymer quenching, xws li 3% -8%, tuaj yeem siv tau; thaum rau cov saw hlau loj uas muaj hnyav, qhov concentration ntawm cov kua quenching yuav tsum tau nce ntxiv kom haum rau 10% -20% lossis siab dua kom ua tau raws li nws cov kev xav tau rau qhov nyuaj thiab lub zog. Hauv kev tsim khoom tiag tiag, qhov concentration ntawm cov kua quenching yuav tsum tau tswj hwm nruj me ntsis, thiab yuav tsum tau kuaj xyuas thiab kho tsis tu ncua kom ntseeg tau tias qhov ruaj khov ntawm qhov zoo quenching.
(II) Kub quenching
Qhov kub quenching kuj muaj feem cuam tshuam tseem ceeb rau kev ua haujlwm ntawm cov saw hlau. Qhov kub quenching siab dua tuaj yeem ua rau cov austenite nplej hauv cov saw hlau loj hlob, tab sis nws kuj yooj yim ua rau qhov nyuaj thiab toughness tom qab quenching kom txo qis, ua rau muaj kev pheej hmoo ntawm kev tawg quenching; yog tias qhov kub quenching qis dhau, qhov nyuaj txaus thiab cov qauv martensitic yuav tsis tau txais, cuam tshuam rau kev txhim kho kev ua haujlwm ntawm cov saw hlau. Rau cov hlau thiab cov saw hlau sib txawv, nws yog qhov tsim nyog los txiav txim siab qhov kub quenching ntau yam raws li lawv cov khoom siv thiab cov txheej txheem xav tau. Feem ntau hais lus, qhov kub quenching ntawm cov saw hlau carbon yog nruab nrab ntawm 800 ℃ -900 ℃, thaum qhov kub quenching ntawm cov saw hlau alloy yog me ntsis siab dua, feem ntau ntawm 850 ℃ -950 ℃. Hauv kev ua haujlwm quenching, qhov sib xws thiab qhov tseeb ntawm qhov kub cua sov yuav tsum tau tswj hwm nruj me ntsis kom tsis txhob muaj qhov sib txawv ntawm kev ua haujlwm ntawm cov saw hlau vim qhov kub hloov pauv.
(III) Kev ncig thiab kev sib xyaw ntawm cov khoom cua txias
Thaum lub sijhawm ua kom quenching, kev ncig thiab kev sib xyaw ntawm cov khoom cua txias muaj qhov cuam tshuam loj rau kev ua haujlwm ntawm cov kua polymer quenching thiab cov saw hlau. Kev ncig thiab kev sib xyaw zoo tuaj yeem ua rau cov kua quenching kov tag nrho nrog qhov chaw ntawm cov saw hlau, ua kom cov cua sov hloov pauv sai dua, thiab txhim kho qhov sib xws ntawm qhov ceev quenching. Yog tias qhov ntws ntawm cov khoom cua txias tsis du, qhov kub ntawm cov kua quenching hauv thaj chaw nce siab dhau, uas yuav ua rau qhov ceev txias tsis sib xws hauv ntau qhov ntawm cov saw hlau, ua rau muaj kev ntxhov siab ntau dhau thiab kev hloov pauv. Yog li ntawd, thaum tsim thiab siv lub tank quenching, yuav tsum muaj lub kaw lus sib xyaw kom haum kom ntseeg tau tias qhov xwm txheej ntws ntawm cov kua quenching zoo thiab tsim cov xwm txheej zoo rau kev sib xyaw ntawm cov saw hlau.
(IV) Lub xeev nto ntawm cov saw hlau
Qhov xwm txheej ntawm cov saw hlau kuj tseem yuav muaj qee qhov cuam tshuam rau qhov txias thiab kev ua haujlwm kawg ntawm cov kua polymer quenching. Piv txwv li, yog tias muaj cov khoom tsis huv xws li roj, hlau filings, nplai, thiab lwm yam ntawm qhov chaw ntawm cov saw hlau, nws yuav cuam tshuam rau kev tsim thiab kev nplaum ntawm cov zaj duab xis polymer, txo qhov kev ua haujlwm txias ntawm cov kua quenching, thiab ua rau tsis sib npaug quenching hardness lossis quenching tawg. Yog li ntawd, ua ntej quenching, qhov chaw ntawm cov saw hlau yuav tsum tau ntxuav kom huv si kom ntseeg tau tias nws qhov chaw huv thiab tsis muaj qhov tsis zoo xws li roj thiab nplai, kom ntseeg tau tias cov kua polymer quenching tuaj yeem ua tiav nws lub luag haujlwm thiab txhim kho qhov zoo ntawm cov saw hlau.
(V) Kev siv cov khoom ntxiv
Yuav kom txhim kho kev ua haujlwm ntawm cov kua polymer quenching thiab txhim kho qhov cuam tshuam ntawm cov saw hlau, qee zaum ntxiv qee cov khoom ntxiv tshwj xeeb rau hauv cov kua quenching. Piv txwv li, kev ntxiv cov tshuaj tiv thaiv xeb tuaj yeem tiv thaiv cov saw hlau kom tsis txhob xeb tom qab quenching thiab ntev nws lub neej kev pabcuam; kev ntxiv cov neeg sawv cev defoaming tuaj yeem txo cov npuas tsim thaum lub sijhawm quenching thiab txhim kho kev ua haujlwm thiab kev nyab xeeb ntawm cov kua quenching; kev ntxiv surfactant tuaj yeem txhim kho qhov ntub thiab lo ntawm cov kua polymer quenching, txhim kho nws cov nyhuv sib cuag nrog qhov chaw ntawm cov saw hlau, thiab txhim kho kev ua haujlwm txias. Thaum xaiv thiab siv cov khoom ntxiv, lawv yuav tsum tau sib phim raws li cov txheej txheem quenching tshwj xeeb thiab cov kev cai ua haujlwm ntawm cov saw hlau, thiab qhov ntau ntawm cov khoom ntxiv yuav tsum tau tswj hwm nruj me ntsis kom tsis txhob muaj kev cuam tshuam tsis zoo rau kev ua haujlwm ntawm cov kua quenching.

5. Kev saib xyuas thiab kev tswj hwm cov kua polymer quenching
Yuav kom ntseeg tau tias lub sijhawm ntev ntawm cov kua polymer quenching thaum lub sijhawm kho cua sov ntawm cov saw hlau, nws yog qhov tsim nyog los tswj thiab tswj nws kom zoo.
Kev kuaj pom qhov concentration tas li: Siv cov cuab yeej tshaj lij xws li refractometers los kuaj pom qhov concentration ntawm cov kua quenching tas li, thiab kho nws raws sijhawm raws li cov txiaj ntsig ntawm kev xeem. Feem ntau pom zoo kom kuaj qhov concentration ib zaug ib lub lim tiam. Yog tias qhov concentration pom tias ntau tshaj qhov yuav tsum tau ua, nws yuav tsum tau diluted lossis cov tshuaj polymer tshiab yuav tsum tau ntxiv rau lub sijhawm.
Tswj cov khoom tsis huv: Tsis tu ncua ntxuav cov khoom tsis huv thiab cov roj ntab hauv qab ntawm lub tank quenching kom tiv thaiv cov khoom tsis huv ntau dhau los cuam tshuam rau kev ua haujlwm txias thiab lub neej ua haujlwm ntawm cov kua quenching. Lub tshuab lim dej tuaj yeem ntsia tau los ncig thiab lim cov kua quenching kom tshem tawm cov khoom tsis huv xws li cov hlau filings thiab oxide scale.
Tiv thaiv kom tsis txhob muaj kab mob loj hlob: Cov kua polymer quenching yooj yim ua rau cov kab mob loj hlob thaum siv, ua rau nws puas tsuaj thiab ua haujlwm tsis zoo. Yog li ntawd, nws yog ib qho tsim nyog yuav tsum ntxiv cov tshuaj tua kab mob tsis tu ncua thiab khaws cov kua quenching kom huv thiab muaj cua nkag tau zoo kom tsis txhob muaj kab mob loj hlob. Feem ntau, cov tshuaj tua kab mob raug ntxiv txhua ob lub lis piam, thiab kev saib xyuas yog them rau kev tswj qhov kub thiab pH ntawm cov kua quenching kom nws nyob hauv qhov ntau thiab tsawg.
Ua tib zoo saib xyuas lub tshuab cua txias: Tshawb xyuas thiab tswj lub tshuab cua txias ntawm lub tank quenching kom paub tseeb tias qhov kub ntawm cov kua quenching tuaj yeem tswj tau zoo. Kev ua tsis tiav ntawm lub tshuab cua txias yuav ua rau qhov kub ntawm cov kua quenching siab dhau lossis qis dhau, cuam tshuam rau nws qhov kev ua haujlwm txias thiab qhov zoo ntawm cov saw hlau quenching. Tshawb xyuas tsis tu ncua seb cov yeeb nkab txias puas raug thaiv, seb lub twj tso kua dej txias puas ua haujlwm zoo, thiab lwm yam, thiab kho thiab saib xyuas raws sijhawm.

6. Xaus Lus
Cov kua polymer quenching ua lub luag haujlwm tseem ceeb hauv cov txheej txheem kho cua sov ntawm cov saw hlau. Nws txhim kho cov yam ntxwv ntawm cov saw hlau xws li qhov nyuaj, lub zog, kev tiv thaiv kev hnav, kev tiv thaiv kev qaug zog thiab kev ruaj khov ntawm qhov ntev los ntawm kev kho qhov nrawm ntawm kev txias thiab kev ua kom zoo dua ntawm cov qauv sab hauv. Txawm li cas los xij, txhawm rau muab kev ua si tag nrho rau qhov zoo ntawm cov kua polymer quenching thiab tau txais kev ua tau zoo zoo tshaj plaws ntawm cov saw hlau, nws yog qhov tsim nyog los xav txog ntau yam xws li kev sib xyaw ua ke ntawm cov kua quenching, qhov kub ntawm kev quenching, kev ncig thiab kev sib xyaw ntawm cov khoom txias, qhov xwm txheej ntawm cov saw hlau thiab kev siv cov khoom ntxiv, thiab nruj me ntsis tswj thiab tswj cov kua quenching. Tsuas yog ua li no peb thiaj li paub tseeb tias cov saw hlau tuaj yeem ua haujlwm ruaj khov thiab ntseeg tau hauv ntau yam khoom siv kho tshuab thiab ua tau raws li qhov xav tau kev ua tau zoo ntawm kev tsim khoom lag luam niaj hnub rau cov khoom sib kis.