Thaum koj hnov 'cov hlau nplaum hlau', thawj qhov uas tej zaum yuav los rau hauv siab yog cov qauv nodular graphite, cov spheroids uas muab nws yooj yim. Tab sis nyob rau hauv lub foundry, qhov ntawd yog qhov pib taw tes xwb. Qhov kev sib tw tiag tiag tsis ua tiav nodularization - feem ntau cov chaw tsim khoom tsim nyog tuaj yeem tswj tau qhov ntawd nrog kev kho MgFeSi. Nws yog tswj txhua yam uas tshwm sim ua ntej thiab tom qab lub sijhawm ntawd kom tau txais qhov casting uas tsis yog dhau qhov kev kuaj sim xwb, tab sis ua haujlwm hauv thaj teb yam tsis muaj kev tawg los yog ua tsis tiav ntxov ntawm subsurface shrinkage. Kuv tau pom ntau qhov tshwj xeeb uas tsuas yog hu rau cov hlau nplaum thiab xav tias Qib 60-40-18 yog muab. Tsis yog. Qhov sib txawv ntawm lub suab nrov thiab cov khoom seem feem ntau yog nyob rau hauv lub rooj vag system tsim, tus nqi cua txias hauv pwm, thiab txawm tias lub sij hawm inoculant ploj mus - cov ntsiab lus uas tsis ua rau cov ntaub ntawv pov thawj.
Lub luag haujlwm tsis nkag siab ntawm Inoculation thiab Pwm kev sib cuam tshuam
Wb tham inoculation. Nws tsis yog ib qho kev txhaj tshuaj tom qab kho. Lub caij nplooj ntoo hlav lig yog tus qauv, paub meej, tab sis yog tias koj cov pwm yog txias, ntom cov xuab zeb, koj tab tom sib ntaus sib tua sib txawv. Kev ua kom txias sai tuaj yeem txhawb nqa carbide, tshwj xeeb tshaj yog nyob rau hauv cov ntu nyias, txawm tias muaj kev tiv thaiv zoo. Kuv nco qab ib pawg ntawm hydraulic valve lub cev peb tau ua, tej zaum tsib xyoos rov qab. Cov chemistry yog zoo meej, kev kho mob yog phau ntawv. Tab sis peb muaj teeb meem nyuaj nyuaj ntawm lub ntsej muag flange. Tig tawm lub plhaub molding txheej txheem peb tau siv-ib qho tshwj xeeb ntawm cov khw nyiam Qingdao Qiangsenyuan Technology Co., Ltd. (QSY) uas muaj kev paub tob nrog plhaub molding- tau ua kom txias cov hlau sai heev hauv cov chaw tshwj xeeb. Peb yuav tsum tweak lub pwm txheej, hloov mus rau ib tug muaj zog inoculant uas muaj bismuth, thiab kho qhov kub ntawm ib tug mere 15 ° C. Lub qhov rais me me no ua rau qhov sib txawv ntawm kev lees txais thiab kev tsis lees paub. Nws yog hom txheej txheem tshwj xeeb nuance koj tsuas yog kawm los ntawm kev khiav ntau lawm thiab pom cov qauv hauv cov ntawv ceeb toom tsis ua haujlwm.
Qhov no txuas mus rau qhov dav dav txog kev koom tes nrog lub chaw tsim khoom. Koj tsis yog xav tau ib tus neeg uas muaj peev xwm nchuav cov hlau nplaum. Koj xav tau tus khub uas nkag siab txog tag nrho cov saw hlau tsim khoom. Piv txwv li, yog hais tias ib tug casting yuav tsum complex sab hauv raws thiab tom qab CNC machining rau precision sealing nto, lub foundry txoj kev mus rau cov tub ntxhais sib dhos thiab yuav ua li cas lawv tsim rau qhov tsawg kawg nkaus kev ntxhov siab dhau los ua qhov tseem ceeb. Lub khw uas tsuas yog casting yuav tsis cuam tshuam rau hauv machining stresses uas qhia zais porosity. Ib tug vertically integrated kev khiav hauj lwm, zoo li ib tug piav qhia ntawm https://www.tsingtaocnc.com, uas tuav ob qho tib si casting thiab machining, inherently tsim nrog cov kauj ruam tom ntej hauv siab. Lawv paub qhov twg muab feeders tsis yog rau soundness, tab sis kuj yuav tawm zoo, zoo ib yam khoom rau lub tshuab khw, tsis txhob nyuaj me ntsis uas rhuav tshem cov cuab yeej.
Hais txog machining, qhov ntawd yog lwm qhov chaw uas cov hlau nplaum lub koob npe nrov rau kev ua haujlwm zoo tuaj yeem ua yuam kev. Yog, nws zoo dua li grey hlau nyob rau hauv cov nqe lus ntawm cov cuab yeej lub neej, feem ntau. Tab sis lub machinability ntawm qib 65-45-12 tuaj yeem sib txawv raws li pearlite / ferrite piv hauv microstructure. Ib feem uas feem ntau yog ferritic yuav cov pos hniav, thaum ib qho uas muaj pearlite ntau dhau (tshwj xeeb tshaj yog tias nws ntxhib) hnav nrawm nrawm. Lub foundry yuav tsum tau tswj lub voj voog txias thiab ua tau tom qab annealing kom ntaus tus qauv zoo rau machining, tsis yog rau lub zog tensile. Nws yog ib qho kev sib npaug.
Gating and feeding: Where Theory Meets the Floor
Phau ntawv gating ratios yog qhov pib muaj kev nyab xeeb, tab sis lawv feem ntau ua tsis tiav hauv kev xyaum rau cov geometry nyuaj. Lub hom phiaj yog ib qho chaw nyob ntsiag to kom tsis txhob muaj slag thiab dross entrainment, tab sis kuj coj cov hlau kub tshaj plaws rau cov seem uas xav tau kev pub noj ntau tshaj. Rau qhov hnyav-section ductile hlau casting, zoo li lub iav khoob lossis lub twj tso kua mis, koj tab tom cuam tshuam nrog kev poob qis. Nws yog ib qho teeb meem pub mis, tab sis nws kuj yog teeb meem graphite expansion. Kev nthuav dav thaum lub sij hawm solidification tuaj yeem them rau shrinkage, tab sis tsuas yog tias cov pwm nruj txaus kom muaj nws. Yog hais tias lub pwm phab ntsa txav, koj tau txais shrinkage porosity. Tias yog vim li cas kev xaiv ntawm cov xuab zeb ntsuab thiab cov xuab zeb sib xyaw ua ke (xws li furan lossis phenolic urethane) tsis yog qhov tseem ceeb. Rau qhov muaj kev ncaj ncees siab, qhov siab dua ntawm cov tshuaj sib xyaw ua ke feem ntau tsim nyog tus nqi ntxiv.
Peb kawm qhov no txoj kev nyuaj ntawm ib qhov project rau compressor bracket. Nws yog ib qho yooj yim zoo nkauj, tab sis nrog ib tug tuab hub seem. Peb siv cov txheej txheem pressurized gating system nyob rau hauv ntsuab xuab zeb. Cov castings dhau X-ray, tab sis nyob rau hauv cov ntaub ntawv pov thawj, ob peb ua tsis tau tejyam ntawm lub hub. Qhov tsis xws luag tsis yog classic shrinkage; Nws yog ntau ntawm dispersed microporosity. Lub pwm phab ntsa tau tawm los me ntsis, tsuas yog txaus los tiv thaiv ib lub yeeb nkab tab sis tsis txaus los xyuas kom meej tag nrho qhov ntom. Peb hloov mus rau furan xuab zeb pwm rau ntu ntawd nkaus xwb (tus nqi kim tab sis tsim nyog hloov) thiab siv lub tswv yim ua kom txias txias dua nyob ib sab ntawm lub hub hauv pwm. daws qhov teeb meem. Qhov takeaway? Koj tsis tuaj yeem tsim lub rooj vag qhov system hauv kev sib cais. Koj yuav tsum tsim cov pwm nruj thiab txias txias nyob ib puag ncig nws.
Qhov no yog qhov uas xyoo caum ntawm patternmaking thiab pwm engineering kev them nyiaj. Ib lub tuam txhab nrog cov ntaub ntawv ntev ntev, hais ntau dua 30 xyoo raws li tau hais hauv QSY cov keeb kwm kev ua haujlwm, tau tsim lub tsev qiv ntawv hlwb ntawm cov kev sib raug zoo no. Lawv tau pom dab tsi ua haujlwm rau lub manifold piv rau lub log hub. Qhov kev paub tacit no qhia txog lawv cov txheej txheem pib tsim, tiv thaiv ntau qhov kev sim-thiab-kev ua yuam kev seem. Nws tsis yog ib yam uas koj tuaj yeem yooj yim codify rau hauv software simulation, txawm tias simulation pab nqaim cov kev xaiv.
Khoom Nuances: Nws tsis yog Hlau thiab Carbon xwb
Ductile hlau tsis yog ib yam khoom. Tus qauv ASTM qib (60-40-18, 65-45-12, 80-55-06, thiab lwm yam) yog txhais los ntawm qhov tsawg kawg nkaus tensile thiab yield zog thiab elongation. Tab sis cov kev hloov pauv uas tsis tau hais txog - cuam tshuam tsis zoo ntawm qhov kub thiab txias, qaug zog lub zog, thermal conductivity - muaj kev cuam tshuam loj heev los ntawm cov kab mob thiab kev kho cua sov. Piv txwv li, manganese. Nyob rau hauv steel, nws yog ib tug ntxiv dag zog. Nyob rau hauv cov hlau ductile, siab Mn (tshaj li 0.3% los yog li ntawd) cais mus rau cov ciam teb ntawm tes thiab txhawb pearlite, uas yog zoo, tab sis nws kuj muaj peev xwm tsim carbides uas ua mob toughness thiab machinability. Koj yuav tsum ua kom qis qis, uas feem ntau txhais tau hais tias siv cov npua npuag hlau lossis cov seem hlau ntau dua.
Tom qab ntawd muaj tooj liab thiab tin, siv los ua pearlite txhawb rau qib siab zog. Tab sis lawv yuav tsum tau ntxiv nrog precision. Ntau dhau lawm, thiab koj yuav muaj kev pheej hmoo rov qab txias lossis hnyav dhau. Kuv tau pom ib pawg ntawm cov castings txhais tau tias yog 80-55-06 tawm los ze dua vim tias cov tin ntxiv tau suav tsis raug. Lawv muaj zog li ntuj txiag teb tsaus, tab sis nkig. Lawv yuav tsum tau rov ua dua, uas ntxiv cov nqi thiab lub sijhawm mus ncig. Nws yog ib qho tseem ceeb kom nco ntsoov tias qhov cub hluav taws xob tswj hluav taws xob yog kev qhuab qhia txhua hnub, teev teev.
Thiab qhov no yog ua ntej koj txawm xav txog tshwj xeeb alloys. Thaum cov txheej txheem hlau npog npog feem ntau cov kev xav tau ntawm kev lag luam, qee zaum koj xav tau cov hlau nplaum hlau rau hnav lossis kub ua haujlwm - ntxiv npib tsib xee, chromium, lossis molybdenum. Los yog, daim ntawv thov xav tau ib tsev neeg cov khoom sib txawv kiag li, xws li cov cobalt-based alloys los yog Nickel-raws li alloys tias qee qhov kev tsim kho qib siab ua haujlwm. Cov hauv paus ntsiab lus tseem ceeb ntawm kev ua suab nrov tseem siv tau, tab sis kev ua kom yaj, kev kho, thiab kev coj ua kev coj ua tseem ceeb dua. Cov npoo rau qhov yuam kev shrinks. Lub foundry uas ua tiav tswj cov khoom sib txawv no yuav muaj cov txheej txheem nruj uas xav tau los ua cov txheej txheem tshwj xeeb hlau hlau castings.
Qhov Tseeb ntawm Dimensional Tolerances thiab Tiav
Lwm qhov kev mob taub hau yog tuav qhov ntev. Ductile hlau muaj qhov tseem ceeb ntawm tus qauv tsim cov nyiaj shrinkage, feem ntau nyob ib ncig ntawm 0.8-1.0%. Tab sis nws tsis yog uniform. Ib tug ntev, ca casting yuav warp txawv tshaj ib tug compact, cubic ib. Tus qauv nws tus kheej yuav tsum tau kho rau qhov kev xav tsis meej no, uas yog kos duab ntau dua li kev tshawb fawb. Peb siv 3D scanning ntawm thawj-kab lus castings piv rau CAD qauv, ces rov kho cov qauv. Nws yog lub sij hawm siv.
Nto tiav yog lwm qhov tshwj xeeb uas tau txais glossed. Ib tug huv, du li-cam khwb cia nto tsis yog hais txog kev zoo nkauj; nws txo lub sij hawm ntxuav, txhim kho txheej adhesion, thiab tuaj yeem ua rau qaug zog lub neej. Qhov zoo ntawm cov xuab zeb molding (AFS tooj) thiab hom pwm txheej yog qhov tseem ceeb. Ib qho ntxhib, kub hnyiab-ntawm cov xuab zeb feem ntau qhia tias qhov kub thiab txias uas siab dhau, lossis cov xuab zeb uas tsis tshua muaj refractoriness. Tab sis qee zaum, me ntsis rougher nto nyob rau hauv qhov chaw tsis tseem ceeb yog kev lag luam tawm uas koj lees txais los ua kom tiav tag nrho cov seem nyias. Nws yog kev txiav txim hu.
Qhov no yog qhov uas tus qauv kev pabcuam tag nrho qhia nws tus nqi. Thaum tib lub koom haum yog lub luag hauj lwm rau cov casting thiab tom qab CNC machining, lawv coj ib tug holistic saib ntawm ib feem. Tej zaum lawv yuav txiav txim siab tawm ib qho ntxiv 2 hli ntawm cov khoom lag luam ntawm lub ntsej muag uas ua rau cov xuab zeb suav nrog, paub txog lawv lub khw muag khoom tuaj yeem ntxuav nws kom ntseeg tau. Lawv tsim cov txheej txheem casting thiab rooj vag kom txo qis kev ua haujlwm huv. Qhov kev sib koom ua ke no tshem tawm cov ntiv tes taw tes uas tuaj yeem tshwm sim ntawm kev sib cais casting thiab machining cov neeg muag khoom thaum muaj teeb meem tshwm sim. Lub hom phiaj tseem nyob ntawm kev xa cov khoom tiav, ua haujlwm tau zoo.
Saib Rov Qab thiab Mus Rau Tom Ntej
Tom qab xyoo nyob rau hauv daim teb no, koj pib pom cov hlau tsis yog cov khoom siv, tab sis raws li ib qho system. Lub kaw lus suav nrog cov khoom siv, cov txheej txheem kev kho mob, kev tsim pwm thiab cov khoom siv, kev coj ua, thiab kev ua haujlwm tom qab casting. Ib qho tsis muaj zog hauv ib qho kev sib txuas qhia hauv qhov kawg, qee zaum tam sim ntawd, qee zaum lub hlis tom qab hauv thaj teb. Qhov zoo tshaj plaws foundries tsis yog ua haujlwm cov kauj ruam no xwb; lawv nkag siab txog kev sib raug zoo ntawm lawv.
Tias yog vim li cas thaum ntsuas tus neeg muag khoom, kuv saib tsawg dua ntawm lawv cov lus thov kev lag luam thiab ntau ntxiv ntawm lawv txoj kev daws teeb meem. Lawv puas muaj cov ntawv qhia ntxaws ntxaws rau txhua txoj haujlwm? Lawv puas tuaj yeem piav qhia tias vim li cas lawv xaiv qhov loj me me lossis qhov ntsuas kub? Lawv puas sau cov kev sib txawv thiab cov txiaj ntsig? Ib tug technically competent khub, zoo li ib tug piav nyob rau hauv kev taw qhia nrog peb lub xyoo caum ntawm kev tsom mus rau plhaub molding, peev casting, thiab machining, feem ntau muaj qhov kev qhuab qhia no. Lawv lub website, tsi.com, qhia txog qhov dav ntawm qhov muaj peev xwm, uas qhia tias lawv yuav tsum tau daws ntau yam kev sib tw ntawm cov txheej txheem sib txawv thiab cov ntaub ntawv, los ntawm nrum hlau thiab hlau rau cov tshwj xeeb alloys.
Thaum kawg, ua tiav hlau casting yog hais txog kev tswj kom sib xws thiab paub hloov kho. Tsis muaj ib txoj hauv kev zoo, tsuas yog txoj hauv kev uas tsim lub suab, ua haujlwm rau tus qauv tsim, nyob rau hauv tus nqi, thiab raws sijhawm. Nws yog ib qho khoom siv txhawb nqa los ntawm kev tshawb fawb, thiab nws yog qhov sib sau ua ke ntawm me me, nyuaj-yeej cov lus qhia-feem ntau los ntawm kev ua tsis tiav-uas cais cov khoom tsim tau zoo los ntawm kev ntseeg siab tiag tiag. Lub hom phiaj yog ib txwm ua kom cov txheej txheem kwv yees tau, yog li qhov kev ua tau zoo ntawm cov casting hauv cov neeg siv khoom txhais tes tsis muaj kev ntseeg siab.
