Cov lus qhia tseem ceeb rau Vuam Cracked Cast Iron Exhaust Manifolds

Vuam cam khwb cia hlau tso manifolds tuaj yeem ua kom yuam kev vim qhovhigh carbon cov ntsiab lus nyob rau hauv cam khwb cia hlau, uas ua rau nws nkig, tshwj xeeb tshaj yog thaum lub sij hawm vuam txheej txheem. Thaum ua hauj lwm nrog kev ua tau zoo harmonic balancers, ntau weld nkag tau tuaj yeem rub cov pa roj carbon rau hauv vuam, tsim cov chaw tsis muaj zog. Txhawm rau tiv thaiv kev tawg ntawm ob qho tib siintake manifold thiab tso pa tawm manifold, welders yuav tsum tswj ductility. Ningbo Werkwell, tus neeg muag khoom ntseeg siab ntawm cov khoom siv tsheb, ua kom zoo hauv txhua yam khoom, suav nrogmarine tso manifolds.

Kev sib tw ntawm Vuam Cast Iron Exhaust Manifolds

Vuam cam khwb cia hlau tso manifolds nthuav tawm cov teeb meem tshwj xeeb uas yuav tsum tau ua tib zoo npaj thiab ua tiav. Kev nkag siab txog cov teeb meem no tuaj yeem pab cov welders ua tiav cov txiaj ntsig zoo dua thiab tsis txhob muaj teeb meem ntau.

Brittleness thiab siab carbon ntsiab lus

Cam khwb cia hlau lub brittleness stems los ntawm nwssiab carbon cov ntsiab lus, uas feem ntau yog nyob nruab nrab ntawm 2% thiab 4%. Qhov kev sib xyaw ua ke no ua rau cov khoom siv tuaj yeem tawg thaum lub sijhawm vuam. Kev kub ceev thiab cua txias tuaj yeem ua rau qhov teeb meem tsis zoo, ua rau cov cua sov tsis sib xws thiab tsim kom muaj cov tawv nqaij tawv, nkig zones hauv cov vuam. Cov cheeb tsam no feem ntau yuav ua tsis tiav hauv kev ntxhov siab. Txhawm rau txo cov kev pheej hmoo no, cov welders yuav tsum siv cov txheej txheem uas tswj cov cua sov thiab txo cov thermal shock.

1. Cov ntsiab lus carbon siab yuav ua rau muaj kev tawg thaum lub sij hawm vuam txheej txheem.
2. Kev hloov kub ceev tuaj yeem ua rau cov welds tsis muaj zog thiab kev puas tsuaj ntxiv.

Tsis tas li ntawd, carbon migration thaum lub sij hawm txias tuaj yeem ua rau cov weld harden, ua kom tsis muaj zog. Qhov no yog vim li cas xaiv cov khoom muab tub lim zoo thiabtxoj kev vuamyog qhov tseem ceeb.

Thermal Sensitivity thiab pheej hmoo ntawm kev tawg ntxiv

Cam khwb cia hlau tsis muaj thermal conductivity ua rau nws rhiab rau qhov kub thiab txias hloov. Cov cua kub tsis sib xws tuaj yeem ua rau muaj kev ntxhov siab thermal, ua rau cov kab nrib pleb tshiab lossis ua rau cov uas twb muaj lawm zuj zus. Welders feem ntau preheat lub manifold kom txo qhov kev pheej hmoo no. Preheating ua kom muaj qhov sib txawv ntawm qhov kub thiab txias, uas pab tiv thaiv kev nthuav dav lossis kev cog lus thaum lub sij hawm vuam. Kev ua kom txias qeeb tom qab cov txheej txheem yog qhov tseem ceeb sib npaug kom tsis txhob qhia cov ntsiab lus kev ntxhov siab tshiab.

Cov kev sib tw uas muaj xws li:

• Tswj thermal stressua tau zoo.
• Ua raws li cov txheej txheem ua kom txias kom tsis txhob tawg.
• Teeb meem nrog kev puas tsuaj uas tsis xav txog thaum kho.

Xaiv txoj kev vuam zoo

Xaiv txoj kev vuam zoo yog nyob ntawm hom cam khwb cia hlau thiab cov kev kho tshwj xeeb. Piv txwv li, grey cam khwb cia hlau yuav tsum tau qeeb preheating thiab npib tsib xee electrodes, thaum nodular cam khwb cia hlau tau txais txiaj ntsig los ntawm nruab nrab preheating. Welders kuj tseem yuav tsum xav txog tej yam ib puag ncig, xws li raug rau cov roj kub kub, uas tuaj yeem cuam tshuam rau lub vuam qhov ntev.

Ningbo Werkwell, lub chaw tsim khoom tshwj xeeb hauv kev tsim kho tshuab, hais txog qhov zoo hauv nws cov khoom siv tsheb. Lawv cov kws tshaj lij ua kom ntseeg tau cov khoom lag luam, suav nrog cov khoom siv hluav taws xob, uas tau txais txiaj ntsig los ntawm cov txheej txheem thiab cov khoom siv siab heev. Werkwell txoj kev cog lus rau qhov zoo yog los ntawm lawv pab pawg QC, uas saib xyuas txhua kauj ruam, los ntawm kev tuag casting mus rau chrome plating.

Los ntawm kev nkag siab txog cov kev cov nyom no thiab xaiv txoj hauv kev, cov welders tuaj yeem txhim kho lawv txoj kev vam meej thaum ua haujlwm nrog cam khwb cia hlau tso manifolds.

Npaj cov Exhaust Manifold rau Vuam

Ntxuav qhov Nto thiab tshem tawm cov kab mob

Ua ntej pib ua haujlwm vuam,ntxuav cov pa tawm manifoldyog qhov tseem ceeb. Qhov chaw qias neeg tuaj yeem ua rau lub vuam tsis muaj zog thiab ua rau tsis ua haujlwm. Ua raws li cov kauj ruam no los npaj thaj chaw kom zoo:

1. Bevel lub Crack: Siv lub grinder los tsim V-shaped zawj raws qhov tawg. Qhov zawj no tso cai rau cov khoom muab tub lim kom zoo dua.
2. Ntxuav lub Cast Iron: Tshem tag nrho cov av, roj, thiab cov hlau qub ntawm qhov chaw. Lub cheeb tsam yuav tsum saib ci ntsa iab thiab du ua ntej yuav mus.
3. Preheat lub Manifold: Siv ib lub teeb kom sov lub manifold me ntsis. Cov kauj ruam no pab tiv thaiv thermal shock thaum lub sij hawm vuam txheej txheem.

Qhov chaw huv si ua kom muaj zog thiab ruaj khov weld, uas yog qhov tseem ceeb thaum kho lub vuam cam khwb cia hlau tso manifold.

Drilling qhov los tiv thaiv Crack Propagation

Drilling qhov me me ntawm qhov kawg ntawm qhov tawg yog ib qho yooj yim tab sis muaj txiaj ntsig zoo kom tsis txhob kis tau. Cov qhov no ua raws li "tawg nres," txo kev ntxhov siab ntawm cov lus qhia tawg. Siv lub laum me ntsis loj dua qhov dav ntawm qhov tawg, thiab xyuas kom lub qhov huv si thiab du. Cov kauj ruam no yog qhov tseem ceeb tshwj xeeb tshaj yog rau cov ntaub ntawv nkig xws li cam khwb cia hlau, vim nws txo qis kev pheej hmoo ntawm kev puas tsuaj ntxiv thaum vuam.

Hnav cov Crack kom zoo dua Weld nkag

Kev hnav cov kab nrib pleb suav nrog shaping thiab smoothing nws cov npoo los txhim kho weld nkag mus. Tom qab beveling lub tawg, siv cov ntaub ntawv los yog grinder kom tshem tawm cov npoo ntse los yog irregularities. Cov txheej txheem no tsim ib qho chaw zoo sib xws rau cov khoom muab tub lim kom ua raws li, ua rau muaj kev sib raug zoo. Kev hnav khaub ncaws kom zoo kuj tseem txo tau qhov porosity hauv qhov vuam, uas tuaj yeem ua rau kev kho tsis muaj zog.

Preheating lub Manifold kom txo tau cov thermal Stress

Preheating lub tso pa tawm manifoldNws yog ib qho tseem ceeb rau kev txo cov thermal stress thaum lub sij hawm vuam. Cam khwb cia hlau yog rhiab heev rau qhov kub thiab txias hloov, thiab tam sim ntawd cua sov los yog txias yuav ua rau tawg. Qhov kev pom zoo ua ntej kub kub yog nyob nruab nrab ntawm 200 ° C thiab 400 ° C (400 ° F thiab 750 ° F). Siv lub propane teeb los yog lub qhov cub kom sov lub manifold tusyees. Tuav qhov ntsuas kub no thoob plaws hauv cov txheej txheem vuam ua kom cov txiaj ntsig zoo dua thiab txo qhov kev pheej hmoo ntawm cov kab nrib pleb tshiab.

Ningbo Werkwell, lub chaw tsim khoom tshwj xeeb hauv kev tsim kho tshuab, hais txog qhov zoo hauv nws cov khoom siv tsheb. Txij li thaum 2015, lub tuam txhab tau tsim ib tug ua tiav cov khoom kab rau automotive sab hauv trim qhov chaw. Lawv pab pawg QC paub txog kev ua kom zoo tshaj plaws, los ntawm kev tuag casting rau chrome plating. Qhov kev cog lus rau kev ua tau zoo ua rau Werkwell lub npe ntseeg hauv kev lag luam.

Welding Techniques for Cast Iron Exhaust Manifolds

Preheated Vuam txoj kev

Preheating yog ib txoj hauv kev zoo tshaj plaws rau vuam acam khwb cia hlau tso manifold. Los ntawm cua sov lub manifold mus rau qhov kub ntawm 500 ° F thiab 1200 ° F, welders tuaj yeem txo cov thermal stress thiab tiv thaiv cov kab nrib pleb. Cov cua sov yuav tsum tau siv maj mam thiab sib npaug thoob plaws tag nrho cov casting kom tsis txhob nthuav dav. Preheating kujminimizes qhov tsim ntawm nyuaj, brittle lugnyob rau hauv cheeb tsam weld thiab tso cai rau cov pa roj carbon diffuse rov qab rau hauv lub hauv paus hlau. Txoj kev no txo ​​cov kev ntxhov siab sab hauv, ua rau kev kho kom ruaj khov thiab tsis tshua muaj kev cuam tshuam.

Tswv yim: Ib txwm saib xyuas qhov kub thiab txias thaum lub sij hawm preheating kom paub meej cov txiaj ntsig zoo ib yam.

Txoj kev uas tsis yog-Preheated Vuam

Tsis yog-preheated vuam yog lwm txoj hauv kev, tab sis nws los nrog kev pheej hmoo. Tsis muaj preheating, lub manifold tseem txias, feem ntau nyob ib ncig ntawm 100 ° F. Qhov no tuaj yeem ua rau kom txias sai sai tom qab vuam, nce brittleness thiab qhov yuav ua rau tawg. Kev faib hluav taws xob tsis sib xws kuj tseem tuaj yeem ua rau cov txheej txheem nyuaj, nkig rau hauv qhov chaw vuam. Welders siv txoj kev no yuav tsum ua tib zoo ua tib zoo kom txo qis kev ntxhov siab sab hauv thiab tsis txhob muaj cov pa roj carbon tsiv teb tsaws, uas tuaj yeem ua rau kev kho tsis muaj zog.

• Kev pheej hmoo ntawm tsis-preheated welding:
  • Muaj feem ntau ntawm kev tawg vim qhov txias txias.
  • Kev faib hluav taws xob tsis sib xws ua rau muaj kev ua haujlwm tsis zoo.
  • Ua kom muaj kev ntxhov siab thiab distortion.

Siv Nickel Rods kom tau txais txiaj ntsig zoo dua

Nickel rods yog ib qho kev xaiv nrov rau vuam cam khwb cia hlau tso manifolds. Lawv cov ntsiab lus siab nickel ua rau lawv zam txim ntau dua thaum lub sijhawm vuam. Cov pas nrig no tuaj yeem ncab thaum lub vuam txias, ua kom haum rau qhov sib txawv ntawm qhov sib txawv ntawm cov cam khwb cia hlau thiab hlau. Qhov kev hloov pauv no txo ​​qhov kev pheej hmoo ntawm kev tawg thiab ua kom muaj kev sib raug zoo dua. Nickel rods kuj tswj cov pa roj carbon monoxide zoo dua, ua rau lawv zoo tagnrho rau kev ua tiav kev kho kom ruaj khov.

Nco tseg: Ib txwm xaivzoo nickel rodsrau qhov ua tau zoo tshaj plaws. Lawv tsim nyog rau kev nqis peev rau kev kho tseem ceeb.

Step-by-Step Vuam Cov Lus Qhia

1. Npaj Manifold: Ntxuav qhov chaw puas kom huv si, bevel qhov tawg los tsim V-groove, thiab preheat lub manifold yog siv txoj kev preheated.
2. Siv Cov Khoom Siv Filler: Siv tus pas nrig npib tsib xee los yog cov nyiaj solder muab tub lim. Coated qhov tawg nrog flux, tso lub muab tub lim kom sib npaug, thiab xyuas kom zoo adhesion.
3. Txias lub Manifold maj mam: Cia lub manifold kom txias maj mam los tiv thaiv thermal poob siab thiab tawg.
4. Tshawb xyuas Kev Kho: Tshem tawm cov khoom seem seem thiab xyuas cov vuam kom muaj zog thiab kav ntev.

Ningbo Werkwell, lub chaw tsim khoom tshwj xeeb hauv kev tsim kho tshuab, hais txog qhov zoo hauv nws cov khoom siv tsheb. Txij li thaum xyoo 2015, lub tuam txhab tau muab cov khoom lag luam tiav rau cov khoom siv hauv tsheb sab hauv. Lawv pab pawg QC paub txog kev ua kom zoo tshaj plaws, los ntawm kev tuag casting rau chrome plating. Qhov kev cog lus rau kev ua tau zoo no ua rau Werkwell lub npe ntseeg siab rau cov khoom lag luam txhim khu kev qha xws li tso pa tawm.

Tom qab vuam kev kho thiab tshuaj xyuas

Peening los txo kev ntxhov siab

Peening yog ib kauj ruam tseem ceeb tom qab vuam cam khwb cia hlau tso manifolds. Nws pab txo kev ntxhov siab hauv qhov chaw welded, txo qhov kev pheej hmoo ntawm kev tawg thaum cov khoom txias. Cov txheej txheem no suav nrog kev tawm tsam qhov chaw weld thaum nws tseem sov.Ib lub pob peen rauj feem ntau yog sivrau lub hom phiaj no. Los ntawm maj mam tapping rau saum npoo, welders tuaj yeem compress cov khoom, uas yuav pab faib kev ntxhov siab ntau dua.

Tswv yim: Ua raws li lub zog siv thaum lub sijhawm peening kom tsis txhob tsim cov chaw tsis muaj zog.

Peening tsis tau tsuas yog ntxiv dag zog rau cov weld tab sis kuj ua kom cov kev kho yuav kav ntev dua. Nws yog ib txoj hauv kev yooj yim tab sis siv tau los txhim kho cov kav ntev ntawm cov manifold.

Ua kom txias txias kom tiv thaiv kev tawg

Txias lub manifold maj mam tom qab vuam yog ib qho tseem ceeb raws li qhov vuam nws tus kheej. Kev ua kom txias nrawm tuaj yeem ua rau muaj kev ntxhov siab thermal, ua rau tawg lossis tawg. Txhawm rau tiv thaiv qhov no, welders yuav tsum cia lub manifold kom txias maj mam. Npog qhov chaw ua haujlwm nrog cov ntaub ntawv insulating, zoo li daim pam welding, pab khaws cov cua sov thiab ua kom muaj cua txias. Tiv thaiv lub manifold los ntawm cua los yog cua ntsawj ntshab kuj yog ib qho tseem ceeb, vim hais tias tsis sib xws txias yuav cuam tshuam qhov kho.

Nco tseg: Kev ua kom txias qeeb yog qhov tseem ceeb tshwj xeeb rau cov hlau cam vim nws qhov rhiab heev rau qhov kub thiab txias.

Los ntawm kev ua raws li cov kev ceev faj no, cov welders tuaj yeem zam tsis txhob ua lawv txoj haujlwm nyuaj thiab xyuas kom cov manifold tseem nyob tsis tau.

Tshawb xyuas Weld rau Durability thiab Strength

Thaum lub manifold tau txias, tshuaj xyuas qhov vuam yog cov kauj ruam kawg. Saib xyuas cov kab nrib pleb uas pom, porosity, lossis qhov chaw tsis muaj zog. Lub iav tsom iav tuaj yeem pab txheeb xyuas qhov tsis zoo me me. Yog tias qhov vuam zoo li tsis sib xws lossis nkig, yuav tsum tau kho ntxiv. Kev ntsuas lub manifold nyob rau hauv lub teeb kev nyuaj siab kuj tuaj yeem paub meej tias nws lub zog. Kev tshuaj xyuas kom meej kom ntseeg tau tias kev kho yog txhim khu kev qha thiab npaj rau kev siv.

Ningbo Werkwell yog lub chaw tsim khoom tshwj xeeb thiab xa tawm hauv kev tsim kho tshuab. Lub tuam txhab cov haujlwm tseem ceeb yog muab cov khoom siv tsheb thiab cov fasteners. Txij li xyoo 2015, Werkwell tau muab cov khoom lag luam ua tiav rau cov khoom siv hauv tsheb sab hauv. Lawv pab pawg QC paub txog kev ua kom zoo tshaj plaws, los ntawm kev tuag casting thiab txhaj tshuaj molding rau chrome plating. Qhov kev cog lus rau kev ua tau zoo ua rau Werkwell lub npe ntseeg hauv kev lag luam.

Vuam cam khwb cia hlau tso manifolds xav tau kev npaj, cov txheej txheem tsim nyog, thiab kev saib xyuas tom qab vuam. Cov kauj ruam tseem ceeb suav nrogbeveling tawg, ntxuav qhov chaw, thiab preheating los tiv thaiv thermal shock.Zam kev ua yuam kev zoo li kev tswj tsis zoo thaum tshav kub kubua kom durability. Ua raws li cov kev coj ua zoo tshaj plaws txhim kho kev ua haujlwm thiab kev ua haujlwm ntev. Ningbo Werkwell, tus neeg muag khoom ntseeg siab, lav qhov zoo hauv tsheb los ntawm cov kws tshaj lij QC txheej txheem txij li xyoo 2015.

FAQ

Dab tsi ua rau vuam cam khwb cia hlau tso manifolds nyuaj heev?

Cam khwb cia hlau lub brittleness thiab siab carbon cov ntsiab lus ua rau nws yooj yim rau tawg. Tsis sib xws cua sov lossis cua txias ntxiv kev ntxhov siab, ua rau qhov nyuaj ntawm kev ua tiav kev kho kom ruaj khov.

Kuv puas tuaj yeem welding lub cam khwb cia hlau manifold yam tsis muaj preheating?

Yog, tab sis nws muaj kev pheej hmoo. Tsis yog-preheated welding yuav ua rau kom muaj feem ntawm cov kab nrib pleb vim ceev ceev. Preheating xyuas kom meej txawm tias cua sov faib thiab txo cov thermal stress.

Vim li cas Ningbo Werkwell yog lub npe ntseeg hauv cov khoom siv tsheb?

Ningbo Werkwell specializes nyob rau hauv mechanical engineering thiab automotive qhov chaw. Txij li xyoo 2015, lawv pab pawg QC tau ua kom zoo tshaj plaws, los ntawm kev tuag casting mus rau chrome plating.