Koj paub, thaum tib neeg feem coob hnov 'lub cev lub cev', lawv pom ib qho kev thaiv, hnyav nrog qee qhov drilled hauv nws. Qhov ntawd yog thawj qhov yuam kev loj. Hauv peb txoj haujlwm ua haujlwm ntawm Qingdao Qiangsenyuan Technology Co., Ltd. (QSY), peb tau pom tias lub siab xav ua rau txhua yam ntawm cov teeb meem hauv qab-ua ntej hnav, xau, kev puas tsuaj rau lub cev. Qhov tseeb yog, a cev valve yog lub hauv paus chassis; nws txoj kev ncaj ncees dictates txhua yam. Nws tsis yog hais txog kev muaj siab xwb; Nws yog hais txog cov kev khiav dej num meej, thermal stability nyob rau hauv vwm gradients, thiab tiv thaiv corrosion los ntawm xov xwm koj yuav tsis ntseeg. Kev ua yuam kev yog kim, thiab kuv tau txais cov khoom seem los ua pov thawj nws.
Qhov Kev Txiav Txim Siab: Qhov twg Nws Pib Txhua Yam (lossis Nres)
Txhua leej txhua tus xav dhia ncaj nraim mus rau CNC machining tolerances. Kuv tau txais nws, qhov ntawd yog qhov sexy. Tab sis yog tias koj qhov casting yog khib nyiab, tsis muaj qhov zoo nkauj machining yuav cawm nws. Qhov no yog qhov uas peb lub xyoo caum hauv plhaub pwm thiab peev casting tiag tiag tom. Rau ib cev valve destined rau high-pressure chav los yog corrosive tshuaj, lub internal soundness yog tsis-negotiable. Lub microscopic shrinkage kab noj hniav koj tsis tuaj yeem pom ntawm X-ray? Qhov ntawd yog yav tom ntej qaug zog tawg tos kom tshwm sim. Peb tau kawm qhov no nyuaj heev thaum ntxov nrog ib pawg rau cov neeg siv khoom petrochemical. Cov khoom dhau qhov kev sim siab thawj zaug, tab sis ua tsis tiav hauv qhov chaw tom qab ob peb lub voj voog thermal. Lub hauv paus ua rau? Kev ua kom txias tsis sib haum nyob rau hauv ib ntu tuab ntawm kev nqis peev casting txheej txheem. Nws tsis yog ib qho teeb meem tsim; nws yog tus txheej txheem tswj hiccup.
Tias yog vim li cas xaiv cov khoom siv tsis yog checkbox. Stainless hlau yog qhov pib, tsis yog kev daws teeb meem. Puas yog 304 rau kev xeb dav dav, lossis 316 rau chlorides? Rau huab cua kub thiab sulfidation, koj tab tom saib Inconel 625 lossis Hastelloy C-276-cov nickel-based alloys peb tshwj xeeb hauv. Cov txheej txheem casting hloov tag nrho. Nrog rau cov superalloys no, lub ncuav kub, pwm ua ntej tshav kub, thiab txias npaum li cas yuav tsum nyob rau hauv ib tug zoo meej seev cev. Kev sib txawv me ntsis thiab koj tau txais kev sib cais, ntu ntu. Cov cev valve tej zaum yuav zoo tag nrho, tab sis nws yuav tawg thaum lub sij hawm machining los yog, phem dua, nyob rau hauv kev pab cuam. Peb siv sijhawm ntau tsim nyog rau peb cov txheej txheem tsis ua haujlwm rau txhua qhov tshiab alloy dua li peb ua ntawm cov khoom siv tiag tiag rau thawj kab lus.
Kuv nco txog ib qhov project rau daim ntawv thov geothermal. Cov spec hu ua duplex stainless hlau cev valve. Qhov kev sib tw? Tuav qhov ze ntawm 50/50 austenite-ferrite theem sib npaug los ntawm kev ua haujlwm thiab kev kho cua sov tom qab kom tau txais qhov zoo tshaj plaws ntawm lub zog thiab cov tshuaj chloride kev nyuaj siab corrosion cracking kuj. Ceev ceev heev, thiab koj skew tus piv. Nws coj peb plaub qhov kev tsav tsheb, txiav cov qauv rau kev tshuaj xyuas metallographic txhua lub sijhawm, txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau nws nws nws Cov neeg siv khoom engineers xav tias peb tau ua ntau dhau. Txog rau thaum lawv cov neeg sib tw lub li qub, tau los ntawm cov khoom pheej yig dua, pib ua tsis tiav hauv ib xyoos. Peb tseem nyob hauv av.
Machining: Qhov twg Geometry ntsib kev muaj tiag
Qhov no yog qhov uas daim phiaj xwm los ciaj sia, thiab qhov twg feem ntau ntawm cov mob taub hau pom. Koj tau txais ib tug casting los ntawm lub hauv pem teb foundry. Nws zoo nkaus li zoo. Tom qab ntawd koj muab tso rau hauv CMM (Kev Sib Koom Tes Ntsuas Lub Tshuab) tom qab thawj zaug ua haujlwm roughing, thiab koj pom qhov hloov pauv tseem ceeb. Tej zaum nws tsuas yog ib nrab millimeter xwb, tab sis thaum koj muaj kev sib txuas ntawm kev sib tshuam bores rau lub valve trim, ib nrab millimeter yog kev puas tsuaj. Tag nrho koj cov ntaub ntawv raug kaw. Koj puas sim khaws nws los ntawm kev kho koj qhov kev pabcuam machining, uas tuaj yeem cuam tshuam cov phab ntsa thickness? Los yog koj puas khawb $5,000 casting? Cov no yog cov hu txhua hnub.
CNC machining ib cev valve Tsis yog hais txog kev ntaus +/- 0.01mm. Nws yog hais txog ib ntus. Koj puas tshuab lub flange lub ntsej muag ua ntej los tsim kom tau ib tug thawj datum, los yog koj puas rough tawm sab hauv kab noj hniav kom txo tau kev ntxhov siab? Rau loj, complex lub cev zoo li cov rau lub ntsiab chav cais li qub, peb feem ntau ua ib qho kev ntxhov siab-relief anneal tom qab machining ntxhib. Koj yuav tsum tau tso cov khoom txaus txaus kom tom qab cov khoom txav me ntsis hauv qhov cub, koj tseem tuaj yeem ntxuav nws hauv qhov ua tiav. Yog tias koj tsis npaj rau qhov kev txav no, koj yuav pom koj lub hnab ntim khoom tiav uas tsis muaj qhov tseem ceeb ntxiv lawm.
Cov cuab yeej cuab tam yog lwm tus neeg tua neeg uas ntsiag to. Drilling sib sib zog nqus, hla qhov rau ntsuas lossis cov chaw nres nkoj hauv cov hlau tsis muaj austenitic? Cov khoom ntawd nyiam ua haujlwm hnyav. Siv cov khoom noj tsis raug / ceev, lossis ib qho kev xyaum uas txawm tias me ntsis npub, thiab koj yuav glaze lub qhov phab ntsa. Cov cuab yeej tom ntej, zoo li ib tug reamer, yuav cia li skate tawm ntawm hardened nto, ruining txoj kab uas hla thiab tiav. Peb tau ua qauv ntawm cov qib carbide tshwj xeeb thiab cov cuab yeej ua kom txias txias rau cov haujlwm no tom qab scrapping ntau qhov yuav luag tiav. Nws yog cov feeb no, cov ntsiab lus tsis txaus ntseeg uas cais ib feem uas ua haujlwm ntawm ib qho uas ua tau zoo. Koj tuaj yeem nrhiav qee qhov ntawm peb txoj hauv kev rau cov kev sib tw machining complex ntawm peb qhov chaw ntawm https://www.tsingtaocnc.com, txawm tias qhov tseeb nuance yeej ib txwm ua haujlwm tshwj xeeb.
Qhov Tshwj Xeeb Alloys Luav Qhov
Cov neeg muas zaub tuaj rau peb ntawm QSY feem ntau vim lawv tau tsoo cov khoom txwv. Standard steels tsis txiav nws. Qhov no yog qhov uas nws tau nthuav, thiab hais ncaj ncees, qhov twg koj khwv tau koj lub koob npe nrov. Cobalt-raws li alloys zoo li Stellite 6, feem ntau siv los ua cov rooj zaum tawv hauv lub cev valve, nthuav qhia paradox. Lawv zoo kawg nkaus hnav thiab corrosion-resistant, tab sis lawv yog npau suav phem rau tshuab. Lawv gummy, lawv abrade tej cuab yeej, thiab lawv ua kom kub siab heev. Koj tsis tuaj yeem pov ib tus qauv ntxig rau nws xwb.
Peb yuav tsum tsim tag nrho cov kev cai raws tu qauv: super-slow speeds, high feeds, tshwj xeeb cov cuab yeej geometries nrog huab zoo rakes, thiab loj heev-siab txias txias kom tawg lub nti thiab nqa tshav kub. Qee zaum, rau qhov sib txawv nyuaj tshaj plaws, peb tso tseg kev ua haujlwm ib txwm ua rau kev sib tsoo lossis txawm tias EDM (Electrical Discharge Machining) ntawm qee yam nta. Lub ntsiab lus yog, cov khoom ntawm lub cev valve nws tus kheej, los yog cov alloys koj nyob nraum machining rau hauv nws, dictates tag nrho cov manufacturing roadmap. Tsis muaj ib qhov loj-haum-tag nrho CNC program. Nws yog ib tug tas mus li txheej txheem ntawm adaptation.
Thiab nws tsis yog machining xwb. Vuam lub nozzle los yog kho thaj ua rau thaj rau ib tug nickel-based alloy cev valve yuav tsum tau phais precision. Pre-heat, interpass kub tswj, tshwj xeeb muab tub lim xov hlau, thiab ib tug nruj PWHT (Post-Weld Thaum tshav kub kub kho) los kho cov microstructure. Tau txais txhua kauj ruam tsis raug, thiab koj tsim ib cheeb tsam ntawm qhov tsis muaj zog muaj kev cuam tshuam rau kev ua tsis tiav tshaj qhov qub qhov tsis zoo. Peb tuav ib tug mob siab rau ntawm no hom precision weld kho vim hais tias nws yog xws li ib tug tseem ceeb, tshwj xeeb kev txawj ntse. Nws tsis yog lub Hoobkas ua haujlwm; nws yog ze rau metallurgy kos duab.
Kev Xeem & Dab Nyob Hauv Lub Tshuab
Kev tshuaj ntsuam zaum kawg yog qhov uas koj qhov kev ntseeg siab tau txais kev sim, tsis yog ib feem. Hydro-testing rau 1.5x tsim siab yog tus qauv, tau kawg. Tab sis qhov ntawd yog ib qho pass/fail snapshot. Nws tsis qhia koj txog kev nkag mus ntev hauv kev pabcuam kub kub, lossis lub neej qaug zog. Rau cov ntawv thov tseem ceeb, peb thawb ntau ntxiv. Dye penetrant testing (PT) ntawm txhua qhov chaw ua haujlwm kom pom cov kab nrib pleb. Sib nqus particle kuaj (MT) rau cov ntaub ntawv ferritic. Tab sis tus qauv kub, tshwj xeeb tshaj yog rau cov tuab-section peev castings, yog radiographic kuaj (RT).
Koj tab tom nrhiav rau cov teeb meem sab hauv - shrinkage, porosity, inclusions. Cov qauv kev lees paub raws li ASTM E cov qauv yog lim hiam, thiab lawv yuav tsum yog. Kuv tau pom zoo RT cov yeeb yaj kiab qhov twg cov casting muaj me me, cais pawg ntawm porosity kom deb ntawm txhua qhov kev ciam teb siab lossis kev ntxhov siab. Technically, nws yuav dhau qhov xoob spec. Tab sis yog tias nws yog kuv lub npe ntawm daim ntawv pov thawj, thiab kuv xav txog qhov ntawd cev valve ntawm tsob ntoo Christmas subsea lossis kab hluav taws xob nuclear, Kuv yuav tsis lees txais nws. Nws yog kev txiav txim hu. Tus nqi ntawm kev rov ua dua yog tsis muaj dab tsi piv rau tus nqi ntawm qhov ua tsis tiav. Qhov kev coj ncaj ncees no tau muab ci rau hauv peb txoj haujlwm ntawm QSY, yug los ntawm 30+ xyoo pom dab tsi tuaj yeem mus tsis ncaj ncees lawm.
Tom qab ntawd muaj qhov loj me. Daim ntawv qhia CMM tsuas yog tus lej xwb. Koj yuav tsum nyeem nws. Yog hais tias tag nrho cov bore diameters nyob rau hauv spec tab sis qhia me ntsis taper, qhov ntawd txhais li cas? Tej zaum lub cuab yeej deflected. Tej zaum muaj kev ntxhov siab seem. Tej zaum nws yuav ua tau, tab sis nws chij muaj peev xwm txheej txheem tsis ruaj khov rau ntu tom ntej. Kev ua tau zoo tsis yog hais txog kev dhau; nws yog hais txog kev nkag siab cov npoo ntawm qhov hla thiab qhov sib txawv. Peb kho thawj tsab xov xwm tshuaj xyuas zoo li daim ntawv pov thawj.
Rov qab mus rau Daim Duab Loj
Yog li, tom qab tag nrho cov no - cov kev sib cav sib cav, kev sim casting, machining taub hau, kev tshuaj ntsuam angst - koj muaj dab tsi? Koj muaj ib cev valve. Tsuas yog ib feem. Tab sis nws yog ib feem uas embodies ib tug saw ntawm kev txiav txim, kev txawj ntse, thiab, yog, me ntsis ntawm paranoia. Nws tsis yog khoom. Thaum koj tau los ntawm lub khw zoo li peb, koj tsis yog yuav ib lub tshuab ua haujlwm xwb. Koj tab tom yuav lub xyoo dhau los ntawm kev ceev faj uas ua rau peb khiav qhov kev txhaj tshuaj RT ntxiv, qhov txaus siab rau seem thiab rov pib dua, thiab kev paub ntau ntxiv txog yuav ua li cas cobalt-based alloy chips yuav tsum saib thaum lawv tawm ntawm lub cuab yeej kom raug.
Kev lag luam yog tag nrho ntawm cov khw muag khoom uas tuaj yeem ua cov duab zoo li ib cev valve. Qhov ua kom yuam kev yog ua rau ib qho uas ploj mus rau hauv lub cev rau 30 xyoo thiab tsuas yog ua haujlwm, tsis nco qab. Qhov ntawd yog lub hom phiaj. Nws pib nrog kev hwm qhov nyuaj uas muab zais rau hauv lub ntsiab lus yooj yim, lub cev lub cev, thiab xaus nrog ib feem ntawm lub nkoj lossis hauv cov nroj tsuag uas tsis muaj leej twg xav txog ob zaug. Qhov ntawd yog qhov kev ntsuas kev ua tiav tiag tiag, deb dhau ntawm daim ntawv pov thawj tshuaj xyuas.
