Nrog 12 xyoo ntawm kev paub hauv cov khoom sib dhos thiab kev saib xyuas, Kuv tau ua haujlwm tsim thiab kho ntau dua 1,300 Steel Shaft Tes Tsho. Ntawm cov no, ntau dua 200 qhov ua tsis tiav-ze li 15%- tshwm sim los ntawm kev xaiv cov khoom siv tsis raug. Kuv tau pom tias muaj ntau tus kws kho mob ntog feem ntau ntawm "kev xaiv cov khoom" theem thaum ua lub tes tsho-xws li xaiv cov hlau zoo tib yam kom txuag tau tus nqi, tsuas yog pom nws hnav thiab deform hauv 3-6 lub hlis; los yog qhov muag tsis pom kev xaiv siab - cov ntaub ntawv muaj zog raws li kev xav tsis zoo tias lub zog siab dua ib txwm zoo dua. Qhov no tsis tsuas yog ua rau machining nyuaj tab sis kuj ua rau nkig tawg, thaum kawg ncua kev tsim khoom thiab nce nqi rov ua haujlwm. Siv lub tshuab ua tshuab me me uas kuv tau sab laj rau xyoo tas los: lawv qhov kev xaiv cov khoom tsis raug ua rau lawv raug nqi ntau dua 8,000 yuan txhua hli hauv kev poob haujlwm dua-ib qho kev kawm nyuaj.
Lub hauv paus ntsiab lus tseem ceeb: Tsis txhob caum "qhov zoo tshaj" - xaiv "qhov haum tshaj"
Xaiv cov ntaub ntawv rauSteel ncej tes tshostsis nyuaj. Lub hauv paus ntsiab lus tseem ceeb yog qhov yooj yim:ua raws li kev khiav hauj lwm tej yam kev mob thiab phim cov kev xav tau ntawm kev ua haujlwm. Tsis tas yuav mus nrhiav "qhov zoo tshaj" - tsuas yog xaiv "qhov haum tshaj plaws." Ntau tus neeg xaiv qhov tsis ncaj ncees lawm vim lawv tsis tau qhia meej tias lawv lub tes tsho yog dab tsi, ib puag ncig lawv yuav ua haujlwm, lossis lub zog uas lawv yuav dhau mus. Niaj hnub no, kos los ntawm ntau xyoo ntawm tes- ntawm kev paub dhau los ntawm cov qauv kev lag luam thiab cov ntaub ntawv xeem - ntiaj teb tiag, Kuv yuav ua txhaum cov ntsiab lus tseem ceeb rau kev xaiv cov khoom siv. Cov no yog cov tswv yim pom zoo los ntawm daim teb -tsis muaj qhov tsis zoo- uas txawm tias cov kws tshaj lij tshiab tuaj yeem nkag siab thiab siv tau.
Yam yuavtsum tau kawm uantej: Kev xaiv cov khoom yuav tsum ua raws li daim ntawv thov tiag tiag
Ua ntej, tsim lub hauv paus ntsiab lus no:xaiv Steel Shaft Sleeve cov ntaub ntawv tsis yog hais txog kev tsom mus rau ib qho khoom ntiag tug. Nws yuav tsum tau txiav txim siab los ntawm lub tes tsho lub hom phiaj tiag tiag. Cia peb tshuaj xyuas cov xwm txheej uas tshwm sim ntau tshaj - thiab qhov teeb meem nquag tshaj plaws. Siv lub tes tsho tsav ntawm lub tshuab cuab yeej spindles hauv kev cob qhia, piv txwv. Cov tes tsho no tiv taus hnyav hnyav txhua hnub thaum xa hluav taws xob. Cov hlau qub yuav tsis txaus ntawm no; koj xav tau siab - zog, siab - cov ntaub ntawv toughness. Txwv tsis pub, deformation, tawg, lossis txawm tias spindle puas yuav tshwm sim ntxov. Raws li cov ntaub ntawv los ntawm Mechanical Design Handbook (6th Edition), kev xaiv cov khoom siv tes tsho tsis zoo tuaj yeem ua rau cov khoom siv tsis ua haujlwm los ntawm 30% -40%. Qhov kev txiav txim siab no tau rov siv tau dua los ntawm kuv lub xyoo ntawm kev ua tau zoo.
Kev Kawm Txuj Ci: Kev Xaiv Cov Khoom Siv rau Hnyav -Lub Tes Tsho Tsav Tsheb-40Cr Outperforms Q235
Ntawm qhov nruab nrab -sized machining plant (Shandong XX Machinery Co., Ltd., 2024 case study), Kuv ntsib qhov teeb meem no ua ntej:Txhawm rau txuag kev siv zog, tus kws kho tshuab xaiv Q235 steel rau lub tshuab cuab yeej spindle tsav lub tes tsho, nrog qhov ntev ntawm Φ80 × 10 × 120mm. Tom qab tsuas yog peb lub hlis ntawm kev siv, sab hauv phab ntsa coj mus txog 0.15mm-ntau tshaj qhov tsawg dua lossis sib npaug rau 0.1mm qhov kev lees paub tus qauv tau teev tseg hauv GB/T 29225-2012 "Txoj Kev Tshuaj Xyuas Rau Lub Tes Tsho Siv Hauv Kev Siv Tshuab." Qhov no ua rau ncej jamming, Lub tshuab machining raug deteriorated los ntawm ± 0.02mm mus rau ± 0.08mm, yuav tsum tau rework ntawm 17 cov khoom thiab ua rau kev lag luam ncaj qha poob ntau tshaj 5,200 yuan. Tom qab ntawd, kuv pom zoo kom hloov mus rau 40Cr steel. Raws li cov lus qhia zoo ib yam, cov khoom siv tau ua tiav ntawm 850℃ua raws li cov roj txias thiab tempering ntawm 520℃nrog roj txias, raws li GB / T 3077 tus qauv. Raws li kev ua haujlwm zoo ib yam, lub tes tsho no tau siv sijhawm 12 lub hlis ua ntej yuav tsum tau hloov pauv. Hnav tus nqi poob mus rau 0.03mm, thiab rework tus nqi txo los ntawm 20% mus rau 3%. Cov nqi rov ua haujlwm txhua hli ib leeg tau txo qis dua 4,000 yuan. Nws yuav tsum tau muab sau tseg tias thaum 40Cr ua tau zoo, nws tsis haum rau tag nrho cov bushings-nws machining nyuaj tshaj li ntawm Q235, nrog rau kev ua cov nqi kwv yees li ¥12 siab dua ib 'meter'.
Tsis tas li ntawd, raws li GB / T 3077 tus qauv, nws cov vuam yuav tsum tau preheating rau 150-300℃ua raws li kev tshaj tawm -weld kev kho cua sov, txwv tsis pub nws yuav ua rau tawg. Rau lub tes tsho tiv thaiv ntawm cov khoom siv me me uas tsis nqa cov khoom hnyav, tsis tas yuav muaj cov khoom siv qib siab - qib. 20# steel txaus- nws ua tau raws li qhov yuav tsum tau ua, ua kom yooj yim machining, thiab txo cov nqi.
Cov ntsiab lus tseem ceeb: Kev xaiv cov khoom tseem ceeb sib txawv raws li kev ua haujlwm ib puag ncig
Tshaj li qhov load-cov kabmob, qhov chaw ua haujlwm ncaj qha ncaj qha rau kev xaiv cov khoom. Yog tias lub tes tsho tau nruab rau ntawm cov khoom siv sab nraum zoov lossis hauv kev cob qhia nrog cov av noo thiab corrosion me, xeb kuj thiab corrosion kuj yuav tsum tau ua ntej thaum xaiv cov khoom. Hauv qhov no, tus qauv Q235 steel tsis tsim nyog. Txawm tias muaj kev ua haujlwm zoo dua, raws li ISO 9227 cov tshuaj ntsev tsuag tshuaj ntsuam tus qauv, tus qauv Q235 steel tsuas tuaj yeem tuav cov xeb tiv thaiv rau 15-20 hnub hauv qhov chaw ntub dej. Hauv peb lub hlis, xeb yuav tsim thiab tuav lub tes tsho. Kuv feem ntau pom zoo galvanized lossis chrome-plated Q235 steel nrog txheej tuab ntawm 8-12μm. Thaum kuaj ib qho ISO 9227, qhov no ua tiav ntau dua lossis sib npaug li 48 teev ntawm cov tshuaj ntsev ntsev, ua kom tiav cov qauv kev tiv thaiv xeb. Qhov no ua kom ntseeg tau tsawg kawg ib xyoos ntawm xeb- ua haujlwm dawb hauv cov av ntub. Rau siab-kub daim ntawv thov xws li lub cav peripherals, xaiv cov cua sov{29}}resistant steel zoo li 1Cr18Ni9Ti. Cov ntaub ntawv ntsuam xyuas kev lag luam qhia tau hais tias cov hlau no tiv taus 800℃qhov kub thiab txias nrog thermal stability zoo, tswj cov duab tsis muaj softening lossis deformation hauv qab 600 degree. Nco tseg: Tsis txhob siv qhov kub thiab txias-kub txiav kub ntawm 200-300℃kom khaws cov khoom siv kho tshuab.
Kev saib xyuas ntau: Steel machinability ncaj qha cuam tshuam rau kev tsim khoom thiab kev ua haujlwm zoo
Lwm qhov feem ntau tsis saib xyuas yog steel machinability. Thaum tsim lub tes tsho, kev ua haujlwm xws li tig, drilling, thiab sib tsoo yog nquag. Xaiv nyuaj-rau- tshuab steels- xws li siab -lub zog alloy steels- tsis yog tsuas yog siv cov cuab yeej sai tab sis kuj ua rau muaj kev pheej hmoo ntawm cov kab nrib pleb thiab burrs, uas ua rau lub tes tsho tsis siv tau. Kuv ib zaug sim siv 42CrMo alloy hlau rau precision qhia lub tes tsho (kev qhia tshwj xeeb: Φ50 × 8 × 100mm). Cov kev xav tau yog ib sab hauv phab ntsa smoothness ntawm Ra tsawg dua los yog sib npaug rau 0.8μm thiab machining raug tsawg dua los yog sib npaug rau 0.02mm. Txawm li cas los xij, cov cuab yeej tawg tau tshwm sim ntau zaus thaum lub tshuab ua haujlwm, ua rau 3 tawm ntawm txhua 10 ntu tau muab pov tseg. Kev sib tsoo kuj ua tsis tau raws li cov lus qhia tshwj xeeb, xav tau rov ua haujlwm dua. Qhov no nkim ntau tshaj 20 kilograms ntawm hlau thiab peb hnub ntawm kev ua haujlwm, ua rau poob ze li ntawm 2000 yuan. Tom qab ntawd, hloov mus rau 20 # steel yielded 35% kev txhim kho hauv machinability tshaj 42CrMo raws li cov ntaub ntawv sim tiag. Tom qab tig, polishing tag nrho ua tau raws li qhov yuav tsum tau ua rau cov kev taw qhia bushings, txo cov nqi qis dua 1% thiab txhawb kev ua haujlwm ntawm 40%.
Tswv yim siv: DIY Material Selection Guide for Beginners to Avoid Pitfalls (Includes Precautions)
Nov yog lub rooj siv kuv siv rau kev xaiv cov khoom, muab tso ua ke los ntawm -cov xwm txheej hauv ntiaj teb, cov qauv kev lag luam, thiab cov ntaub ntawv xeem tiag tiag. Nws zam tsis yooj yim jargon, tso cai hla ncaj qha - hais txog kev khiav tawm ntawm cov pitfalls. Nco tseg: Parameters nyob rau hauv lub rooj yog siv rau cov txheej txheem txheem. Rau cov xwm txheej huab cua (xws li, ultra- kub kub, hnyav hnyav), kho raws li cov kev xav tau tshwj xeeb lossis sab laj cov kws tshaj lij steel. Kuj tseem xa mus rau cov ntu tseem ceeb hauv Mechanical Design Handbook (6th Edition).
| Lub tes tsho daim ntawv thov thiab kev ua haujlwm | Pom zoo Steel Qib thiab cov ntsiab lus tseem ceeb (nrog rau qhov) | Qhov laj thawj xaiv cov khoom (Cov ntsiab lus zoo + Cov ntaub ntawv) |
Cov ntawv sau / siv (nrog Standard) |
|
Hnyav-duty Transmission of Machine Tools/Automobiles |
40Cr, Tensile Strength Ntau dua lossis sib npaug rau 980MPa, Hardness 28-32HRC (tom qab quenching thiab tempering), Source: GB / T 3077-2015 |
Kev kuaj tus kheej, nws tuaj yeem ua rau hnyav hnyav thiab cuam tshuam lub zog, tsis yooj yim rau deform lossis tawg, thiab nws lub neej kev pabcuam yog 3 zaug ntev dua Q235 |
quenching thiab tempering kev kho mob yog yuav tsum tau (ib GB / T 3077 tus qauv), preheating yuav tsum tau ua ntej vuam, txwv tsis pub nws yog prone rau brittleness thiab cracking. |
|
Kev Taw Qhia Cov Khoom Siv Precision |
20 # Hlau, Tensile Lub Zog Ntau dua lossis sib npaug rau 410MPa, Machining Precision Tsawg dua lossis sib npaug rau 0.02mm, Source: Cov ntaub ntawv ntsuas |
Zoo machinability, yooj yim rau polish, txiav efficiency 35% siab dua 42CrMo, seem seem tsawg dua los yog sib npaug rau 1% |
Polishing yuav tsum tau tom qab tig, sab hauv phab ntsa smoothness Ra tsawg dua los yog sib npaug rau 0.8μm, ua tau raws li qhov yuav tsum tau txais rau precision kev taw qhia |
|
Sab nraum zoov / Humid Ib puag ncig |
Q235 (Galvanized/Chrome-plated), Ntsev Txau Resistance Ntau dua lossis sib npaug rau 48 Teev, Source: ISO 9227 Standard |
Tus nqi qis, zoo xeb kuj, xeb- pov thawj lub neej ntau dua 5 npaug ntev dua li Q235, haum rau cov chaw ua haujlwm ntub dej |
Txheej tuab 8-12μm, yuav tsum tsis sib xws, tsis txhob khawb thaum lub sijhawm teeb tsa, ua raws li ISO 9227 tus qauv xeem |
|
High -kub ib puag ncig Ib puag ncig lub cav |
1Cr18Ni9Ti, Siab -kub Resistance Tsawg dua los yog sib npaug li 800 degree, Zoo Thermal Stability, Source: Steel Industry Measured Data |
Tsis yooj yim rau muag ntawm qhov kub thiab txias, kev ua haujlwm ruaj khov thaum lub sij hawm ntev - ua haujlwm qis dua 600 degree, haum rau kev ua haujlwm nyob ib puag ncig lub cav |
Tsis txhob siab -kub ua haujlwm, tswj qhov kub thiab txias ntawm 200-300℃kom tsis txhob degradation ntawm steel kev ua tau zoo |
Tsis txhob Pitfalls Summary: Ob lub ntsiab lus tseem ceeb rau kev xaiv cov khoom uas tsis muaj qhov yuam kev
Raws li xyoo ntawm kev ua tau zoo thiab cov qauv kev lag luam xws li GB / T 29225-2012 "Test Methods for Sleeves Use in Construction Machinery," Kuv tau txheeb xyuas ob qhov teeb meem tseem ceeb kom tsis txhob muaj. Txawm hais tias koj yog ib tug novice lossis ib tus kws tshaj lij, ua kom ob lub ntsiab lus hauv siab yuav pab koj kom tsis txhob muaj cov khoom xaiv yuam kev:
Pitfall 1:Tsis txhob dig muag nrhiav lub zog siab; Xaiv cov ntaub ntawv raws li Load Requirements (nrog rau cov xwm txheej ciam teb)
Ua ntej, tsis txhob dig muag chasing siab zog. Ntau tus kws tshaj lij xav tias muaj zog steel ntau dua ib txwm zoo dua, tab sis qhov no tsis yog qhov tseeb. Piv txwv li, xaiv high-lub zog steel rau lub tes tsho tiv thaiv tsis yog tsuas yog ua rau kev ua haujlwm nyuaj tab sis kuj ua rau kom brittleness- tsis tas yuav tsum tau ua. Txoj hauv kev kom raug yog: Ua ntej ntsuas lub tes tsho lub nra hnyav. Rau cov khoom hnyav, xaiv siab - steels zoo li 40Cr. Rau lub teeb loads, xaiv qhov nruab nrab - lub zog steels xws li 20# steel lossis Q235, ntsuas kev ua tau zoo thiab tus nqi. Ntawm no, ib qho tseem ceeb ciam teb yuav tsum tau hais txog: Raws li GB / T 3077 tus qauv thiab kev sim ua haujlwm, yog tias lub tes tsho loads tshaj 500 N·m, steel nrog lub zog ntawm 40Cr lossis siab dua yuav tsum tau xaiv thiab tempered kom zoo (quenched ntawm 850℃nrog roj txias, ces tempered ntawm 520℃nrog roj txias). Tsis ua li ntawd ua rau muaj kev phom sij loj heev. Kuv tus kheej tau ntsib cov teeb meem uas tsis yog - lub tes tsho ua raws li tawg, ua rau spindle puas thiab poob ntau tshaj 10,000 yuan.
Pitfall Avoidance Point 2: Ua Ntej Machinability thiab Surface Treatment, Txhais Kev Txais Txais
Secondly, tsis txhob overlook machinability thiab kev kho deg. Thaum xaiv cov ntaub ntawv, nco ntsoov xav txog koj lub peev xwm machining. Yog tias koj lub rooj cob qhia tsis muaj siab - cov cuab yeej machining precision, zam cov hlau uas nyuaj rau tshuab. Yog tias lub tes tsho yuav siv nyob rau hauv qhov chaw ntub dej los yog corrosive, xyuas kom meej kev kho deg-galvanizing lossis chrome plating tau txais, tab sis qhov zoo yuav tsum tau lav. Txheej thickness thiab ntsev tsuag kuj yuav tsum ua raws li ISO 9227 cov qauv; txwv tsis pub, tsis muaj kev kho mob zoo dua li kev kho mob tsis zoo. Tsis tas li ntawd, tshaj tawm - cov qauv kev lees paub yuav tsum ua raws li GB/T 29225-2012 nruj me ntsis. Piv txwv li, hnav rau ntawm phab ntsa sab hauv ntawm lub tes tsho kis tau tus mob yuav tsum tsis pub tshaj 0.1 hli, thaum lub tes tsho qhia yuav tsum muaj qhov tseeb qhov ntev li ntawm ± 0.02 hli thiab sab hauv phab ntsa roughness Ra tsawg dua lossis sib npaug li 0.8μm. Ua tsis tau raws li cov qauv no yuav cuam tshuam cov cuab yeej kev ua tau zoo thaum kev teeb tsa.
Tag Nrho Cov Ntsiab Lus: Cov Khoom Xaiv Cov Tub Ntxhais yog "Compatibility," Kev Ua Haujlwm Zoo yog Qhov Tseem Ceeb
Hauv cov ntsiab lus, lub hauv paus ntsiab lus tseem ceeb rau kev xaiv cov ntaub ntawv thaum tsim Steel Shaft Sleeves yog "kev sib raug zoo"-kev sib raug zoo nrog cov kev ua haujlwm, kev sib raug zoo nrog cov tub rog siv, thiab kev sib raug zoo nrog kev ua haujlwm. Tsis tas yuav ua raws li cov txheej txheem kev ua haujlwm nyuaj lossis tsis pom kev xaiv cov qib siab - nqi steels. Thaum fabricating lub tes tsho, kuv xub qhia meej txog daim ntawv thov thiab kev ua haujlwm. Tom qab ntawd, kuv xaiv cov ntaub ntawv los ntawm kev hla - xa mus rau Mechanical Design Handbook, kuv tus kheej cov kev paub dhau los, thiab cov lus siv. Kuv siv tau cov kev xaiv ntawm cov qauv kev lag luam xws li GB / T 3077 thiab GB / T 29225. Tau ntau xyoo, txoj hauv kev no tau khaws cov nqi rov ua haujlwm qis dua 3%, nrog lub tes tsho ua tiav lub neej kev pabcuam nruab nrab tshaj li 10 lub hlis-25% siab dua qhov nruab nrab ntawm kev lag luam.
Kev xav zaum kawg: Tsis muaj luv luv hauv kev xaiv cov khoom siv -Kev xyaum thiab kev sib sau yog qhov tseem ceeb
Rau peb cov neeg ua haujlwm craftsmen, tsis muaj shortcuts nyob rau hauv cov khoom xaiv. Los ntawm kev sib sau ua ke ntawm tes- ntawm kev paub dhau los, ua tib zoo mloog rau cov qauv kev lag luam thiab cov ntaub ntawv sim tiag tiag, thiab saib xyuas qhov kev ua tau zoo ntawm cov hlau sib txawv, koj yuav maj mam nrhiav pom lub pob. Tau ntau xyoo, kuv tau sau ib phau ntawv tuab ntawm cov ntawv sau txog kev ua haujlwm thiab cov ntaub ntawv ntawm ntau yam ntaub ntawv raws li kev ua haujlwm sib txawv. Kev tshuaj xyuas nws ua ntej txhua qhov kev xaiv khoom yuav pab kom tsis txhob muaj kev cuam tshuam tsis tsim nyog. Tsuas yog nco ntsoov: zam kev xaiv qhov muag tsis pom, tsis txhob caum cov kev xaiv pheej yig, thiab tsis txhob saib xyuas cov ntsiab lus. Xaiv cov ntaub ntawv raws li qhov xav tau tiag tiag thiab ua raws li cov qauv kev lag luam nruj me ntsis. Txoj kev no ua kom cov khoom tsim nyog, ruaj khovSteel ncej tes tshos, txo qhov ua tsis tiav thiab poob, thiab ua rau txoj haujlwm txhawj xeeb dua -dawb.
Tiv tauj peb
📧 Email:lsjiesheng@gmail.com
🌐 official lub website:https://www.automation-js.com/
