Stainless hlau pob khoomyog nyias, precision- gauged strip los yog daim ntawv khoom siv los sau qhov seem seem, kho misalignment, thiab teem meej clearances ntawm mating tshuab Cheebtsam. Vim tias nws txoj haujlwm tag nrho nyob ntawm kev paub txog nws qhov tuab li ntawm ob peb kaum -txheej ntawm ib nti, chav kawm kam rau ua - tsis yog qib alloy - yog qhov tshwj xeeb uas txiav txim siab seb lub shim puas daws teeb meem kev sib raug zoo lossis qhia txog ib qho tshiab.
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QUICK teb Mill-coil stainless shim Tshuag, ua rau ASTM A480 Table A2.1, tuav thickness kam rau ua nruj li ± 0.0006 in. (± 0.015 mm) ntawm 0.005–0.010 in. nominal gauge ntawm nqaim widths - tab sis lub kam rau ua band widens li thickness.
Precision precut thiab hauv av stainless shims feem ntau tuav tolerances ntawm roughly ± 0.00005-0.004 nyob rau hauv. thoob plaws 0.001-0.125 in. range, ib qho kev txiav txim ntawm magnitude tighter dua standard zeb coil kam rau ua nyob rau hauv lub nyias kawg ntawm ntau yam.
Hom 304 yog qhov kev xaiv ua ntej rau kev sib tw dav dav shimming; Hom 316 yog teev rau cov tshuaj chloride lossis dej hiav txwv; Hom 301/302 tag nrho- nyuaj yog qhov nyiam qhov kev ruaj ntseg nyob rau hauv clamping load tseem ceeb tshaj plaws.
Rau kev sib raug zoo (laser ncej alignment, bearing preload, turbine thiab twj tso kua mis baseplates), qhia cov chav kawm kam rau ua thiab ntsuas txoj kev ntawm kev yuav khoom - ASTM A480 zeb kam rau ua ib leeg feem ntau tsis nruj txaus. |
Dab tsi yog Stainless Hlau Shim Tshuag?
Shim Tshuag yog qhov ntsuas qhov ntev, tsis yog ib daim ntawv khoom nkaus xwb - nws cov thickness kam rau ua yog cov specification, yog li ib tug shim tsim los xoob kam rau ua yuav qhia ntau misalignment tshaj nws kho.
Shim Tshuag yog txias-rolled stainless hlau sawb los yog daim ntawv, feem ntau muab nyob rau hauv lub 0.001 nyob rau hauv. rau 0.125 nyob rau hauv. (0.025 hli mus rau 3.2 hli) ntau yam, siv raws li nyias spacers ntawm ob qhov chaw los kho qhov siab qhov sib txawv, teem qhov sib txawv clearances, los yog compensate rau manufacturing variation. Kev siv ib txwm muaj xws li lub cev muaj zog thiab cov twj tso kua mis, teeb tsa cov kabmob preload, kho ncej- rau -shaft misalignment thaum lub sijhawm sib txuas, thiab kho cov tuag thiab cov cuab yeej tshem tawm hauv kev ua haujlwm stamping.
Ordinary ntawv thiab phaj cov khoom tau teev tseg feem ntau rau lub zog, formability, thiab corrosion kuj, nrog thickness kam rau ua raws li ib tug thib ob seem check. Shim Tshuag inverts qhov tseem ceeb: tag nrho lub hom phiaj ntawm ib feem yog los tuav ib tug paub, repeatable thickness. A 0.010 in. nominal shim uas ua tau ntsuas 0.0115 nyob rau hauv. tsis tsuas yog poob ib tug zoo check - nws hloov cov kev sib raug zoo tshwm sim nws twb ntsia los kho. Qhov no yog vim li cas shim Tshuag kev txiav txim yuav tsum ib txwm hu tawm ib tug kam rau ua, tsis yog ib tug nominal thickness thiab alloy.
Dab tsi Thickness Tolerances Ua ASTM A480 Qhia rau Txias -Rolled Narrow Sawb?
ASTM A480 Table A2.1 teeb zeb -coil kam rau ua kom nruj hauv cov ntsiab lus tseeb raws li qhov ntsuas qis qis dua 0.010 in., tab sis nthuav dav nrog sawb dav - yog li nominal thickness thiab dav ob qho tib si nyob rau hauv cov lus qhia.
ASTM A480/A480M yog qhov dav dav - yuav tsum muaj tus qauv tswj qhov ntev ntev rau lub tiaj tus -rolled stainless thiab tshav kub-resisting steel phaj, ntawv, thiab sawb, thiab nws yog lub hauv paus feem ntau mills siv los ua pov thawj txias - dov shim - cov khoom siv nruj me ntsis ua ntej sib tham. Cov lus A2.1 npog txias- dov, nqaim, coil{10}} cov khoom ua tiav - cov qeb uas suav nrog feem ntau shim Tshuag coil - thiab txhais qhov tso cai ntxiv / rho tawm thickness variation raws li kev ua haujlwm ntawm ob qho tib si nominal thickness thiab strip dav.
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Nominal Thickness Range (hauv.) |
Dav Tsawg dua lossis sib npaug li 6 hauv. |
Dav 6-12 nyob rau hauv. |
Dav 12-24 nyob rau hauv. |
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0.002 – 0.005 |
±10% |
±10% |
±10% |
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0.005 – 0.010 |
± 0.0006 hli |
± 0.0008 hli |
± 0.001 hli |
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0.010 – 0.012 |
± 0.001 hli |
± 0.001 hli |
± 0.001 hli |
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0.012 – 0.020 |
± 0.001 hli |
± 0.0015 hli |
± 0.0015 hli |
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0.020 – 0.035 |
± 0.0015 hli |
± 0.0015-0.002 nyob rau hauv. |
± 0.002 hli |
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0.035 – 0.069 |
± 0.0025-0.003 nyob rau hauv. |
± 0.003 hli |
± 0.003 hli |
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0.069 – 0.100 |
± 0.003 hli |
± 0.003 hli |
± 0.004 hli |
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0.100 – 0.125 |
± 0.004 hli |
± 0.004 hli |
± 0.005 hli |
Tau qhov twg los: ASTM A480/A480M, Annex A2, Table A2.1, Tso cai Variations nyob rau hauv Thickness rau txias-Rolled, nqaim, kauj-Processed Product; thickness ntsuas tsawg kawg yog 3/8 nyob rau hauv. (9.5 mm) ntawm lub strip ntug. Cov txiaj ntsig tau pom yog condensed rau ib qho shim - Tshuag ntsuas - sab laj tus qauv tag nrho rau nruab nrab breakpoints thiab dav tshaj 24 in.
Ob tug qauv tsim nyog sau cia rau shim buyers. Ua ntej, qis dua 0.005 in. qhov kam rau ua yog qhia raws li feem pua ntawm nominal thickness es tsis yog tus nqi ruaj khov, yog li ultra-cov ntawv nyias nyias-gauge shim stock nqa qhov sib npaug loj dua qhov sib txawv dua li nruab nrab -ntau gauges. Qhov thib ob, qhov kev tso cai hloov pauv nce ntxiv nrog txoj kab dav dav ntawm qhov muab cov tuab, vim tias cov coil dav dua yog qhov nyuaj dua rau dov sib npaug - qhov nthuav dav uas tseem ceeb thaum lub shim yuav tsum tau hlais los ntawm qhov dav coil piv rau qhov nqaim ntawm qhov pib.
Ntau npaum li cas Tighter Precision Precut Shim Tolerances dua Standard Mill Coil Tolerances?
Precision precut thiab hauv av stainless shims feem ntau tuav kam rau ua ib qho kev txiav txim siab nruj dua li ASTM A480 zeb coil kam rau ntawm nyias gauges, uas yog vim li cas alignment - daim ntawv thov tseem ceeb qhia precut kam rau ua chav kawm es tsis lees txais zeb - khiav coil.
Mill coil kam rau ua raws li ASTM A480 yog kev tsim khoom - txheej txheem tswj kev txwv - nws qhia rau tus neeg yuav khoom seb qhov kev hloov pauv yuav xav tau nyob rau hauv tag nrho cov kauj. Precision shim lwm tus neeg siv cov kev ua haujlwm thib ob (kaw-kev ua siab ntev dov, precision slitting, thiab thickness sorting los yog sib tsoo) kom tuav ntau qhov nqaim bands ntawm tiav, txiav - rau -size shims. Cov lus hauv qab no qhia cov neeg sawv cev precision precut kam rau ua luam tawm los ntawm cov khoom tshwj xeeb shim fabricators rau khoom stainless hlau shims.
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Nominal Thickness (hauv.) |
Precision kam rau ua |
Kwv yees li. ASTM A480 Coil kam rau ua |
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0.001 |
± 0.00005 hli |
± 10% (0.0001 nyob rau hauv.) |
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0.002 |
± 0.0001 hli |
± 10% (0.0002 nti) |
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0.003 |
± 0.00015 hli |
± 10% (0.0003 nti) |
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0.005 |
± 0.00025 hli |
± 0.0006-0.001 nyob rau hauv. |
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0.010 |
± 0.0005 hli |
± 0.001 hli |
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0.020 |
± 0.001 hli |
± 0.0015-0.002 nyob rau hauv. |
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0.050 |
± 0.002 hli |
± 0.0025-0.003 nyob rau hauv. |
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0.100 |
± 0.004 hli |
± 0.003-0.004 hli |
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0.125 |
± 0.004 hli |
± 0.004-0.005 hli |
Tau qhov twg los: Precision precut kam rau ua cov ntaub ntawv muab tso ua ke los ntawm luam tawm stainless hlau precut shim specifications (American Metals Company); ASTM A480 kem muab los ntawm Table A2.1, Annex A2, rau kev sib piv.
Qhov sib txawv yog qhov loj tshaj plaws ntawm qhov kawg ntawm qhov sib txawv, qhov twg zeb coil kam rau ua yog feem pua -raws li thiab precision processing muaj peev xwm tuav tau qhov kam rau ua kiag li. Ntawm qhov ntsuas hnyav dua li ntawm 0.075 hauv., ob txoj kev sib koom ua ke, vim tias dov physics - tsis muaj peev xwm ua tiav - dhau los ua qhov txwv. Rau txhua txoj haujlwm kev sib raug zoo qhov twg lub shim thickness nws tus kheej yog tus tsim kuj sib txawv, qhov no yog qhov sib piv ua ntej xaiv ntawm raw slit coil thiab precision precut shim.
Qib Stainless Hlau Qhov Zoo Tshaj Plaws rau Shim Tshuag - 301, 304, lossis 316?
Hom 304 yog lub neej ntawd raug rau kev dav dav - lub hom phiaj kev sib tw shimming; Hom 301 tag nrho- nyuaj yog qhov nyiam qhov chaw caij nplooj ntoos hlav- rov qab thiab qhov ntev ruaj khov nyob rau hauv rov qab clamping teeb meem feem ntau; Hom 316 yog tshwj tseg rau chloride, marine, lossis tshuaj lom neeg - txheej txheem raug.
Tag nrho peb qib yog austenitic thiab sib koom zoo formability thiab weldability, tab sis lawv diverge nyob rau hauv lub zog, corrosion kuj, thiab nqi - peb variables uas feem ntau txiav txim siab ib tug shim specification.
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Qib |
Ntsiab Alloying |
Tus txheeb ze Corrosion Resistance |
Hom Lub Luag Haujlwm |
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301 |
17% Cr, 7% Ni |
Nruab nrab; ua hauj lwm- hardens sai heev rau siab zog |
Tag nrho - lub caij nplooj ntoos hlav nyuaj shims xav tau qhov kev ruaj ntseg nyob rau hauv load |
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304 |
18% Cr, 8% Ni |
Zoo dav - lub hom phiaj tiv thaiv |
Default xaiv rau feem ntau tshuab alignment thiab leveling shims |
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316 |
16-18% Cr, 10-14% Ni, 2-3% Mo |
Superior; molybdenum resists chloride pitting |
Marine, offshore, tshuaj lom neeg- txheej txheem, thiab kev nyab xeeb ib puag ncig |
Qhov sib ntxiv ntawm molybdenum hauv 316 nce nws qhov sib npaug sib npaug ntawm tus lej (PREN) rau kwv yees li 24-26, piv nrog li 18-19 rau 304, uas yog vim li cas 316 tus nqi ntau dua tab sis muaj sia nyob ntev dua hauv cov tshuaj chloride -cov kabmob cua. Rau cov shims uas yuav zaum hauv lub kaw lus kaw, qhuav gearbox lossis hauv qab lub hauv paus hauv tsev, tus nqi them tsis tshua them rov qab; rau shims raug dej hiav txwv tsuag, deicing ntsev, los yog txheej txheem tshuaj, nws ua.
Puas yog Temper - Full Hard vs. Annealed - cuam tshuam rau Shim Thickness Accuracy?
Tag nrho - nyuaj thiab peb -quarter- tawv tempers yog nyiam rau precision shims vim tias lawv cov yield zog ntau dua resists compression thiab caij nplooj ntoos hlav-rov qab uas cia softer, annealed shims poob thickness raug nyob rau hauv clamping load.
Temper piav qhia txog kev ua haujlwm txias npaum li cas tom qab qhov kawg anneal, thiab nws tau teev tseg nyias los ntawm kev ua siab ntev ntev, txawm tias ob qho kev cuam tshuam hauv kev pabcuam. Ib qho annealed shim yog mos, yooj yim rau txiav thiab deburr, tab sis muaj lub zog tawm los qis dua, txhais tau tias nws tuaj yeem compress los yog deform me ntsis raws li lub clamping quab yuam ntawm ib tug bolted sib koom ua ke - qhia qhov yuam kev uas tsis muaj dab tsi ua li cas nws raug dov. Tag nrho - nyuaj thiab peb -quarter- mob khaub thuas txias- ua haujlwm lub sawb kom muaj zog ntau dua, yog li cov shim ntsia tau tawm tsam tib lub clamping load elastically es tsis yog yas, tuav nws li - tsim cov thickness hauv kev pabcuam.
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Kub |
Kwv yees li. Hardness (Rockwell) |
Kwv tij muaj zog |
Zoo Tshaj Plaws Rau |
|
Annealed (tuag mos) |
B70–B85 |
qis tshaj |
Shims yuav tsum tau txhais tes- ua los yog nruj bending nyob ib ncig ntawm ib tug ncej |
|
1/4 Nyhav - 1/2 Hard |
C25–C35 |
Nruab nrab |
General -lub hom phiaj leveling shims nrog lub teeb tsim kev xav tau |
|
3/4 Hard – Full Hard |
C38–C48 |
Siab tshaj |
Precision alignment shims nyob rau hauv kev ruaj ntseg ntsia liaj qhov rooj -load los yog vibration |
Rau feem ntau precision alignment ua hauj lwm - coupling shims, bearing vaj tse, baseplate leveling nyob rau hauv vibration - puv -nyuaj los yog peb-quarter-mob temper yog qhov kev nyab xeeb default specification, reserving annealed Tshuag rau shims uas yuav tsum tau txhais tes - ua ntej ib ncig ntawm lub installation.
Shim Tolerance txhais li cas rau hauv kev sib tw tiag tiag?
Ib pawg ntawm xoob toleranced shims compounds yuam kev additively, yog li ib tug 0.003 in. per -shim kam rau ua tau siv feem ntau ntawm cov nyiaj tso cai misalignment ntawm ib tug precision rotating - khoom siv tsheb ciav hlau ua ntej ib qho kev ntsuas.
Precision tshuab alignment - piv txwv li, laser ncej alignment ntawm lub twj tso kua mis-thiab- lub cev muaj zog tsheb ciav hlau - feem ntau tau teev tseg rau tag nrho cov lus qhia los yog nyiaj txiag offset nyob rau hauv thaj tsam ntawm 0.002–0.005 in., nyob ntawm seb hom coupling thiab kev khiav hauj lwm ceev. Thaum qhov kev kho ntawd yog tsim los ntawm stacked shims es tsis yog ib tug precision - hauv av shim, txhua shim lub thickness kam rau ua ntxiv rau pawg, vim hais tias kam rau ua ntawm cov khoom ywj siab ua ke additively nyob rau hauv ib tug phem tshaj - pawg pawg- nce (los yog kwv yees li lub hauv paus-sum{12}}square nyob rau hauv ib tug statistical.
Xav txog 0.060 in. kho los ntawm peb shims ntawm roughly 0.020 in. txhua, siv tus qauv ASTM A480 coil kam rau ua (≈ ± 0.0015 in. per shim) piv rau precision precut Tshuag (≈ ± 0.001 in. per shim). Qhov phem tshaj - cov ntaub ntawv kab mob siab yog ± 0.0045 nyob rau hauv. nrog coil - qib shims tiv thaiv ± 0.003 nyob rau hauv. nrog precision precut shims - qhov sib txawv uas tuaj yeem yog tag nrho cov npoo ntawm kev dhau thiab ua tsis tiav qhov kev sib tw nruj. Qhov no yog vim li cas vim li cas qhov kev sib tw ua haujlwm tau qhia meej txog cov chav kawm shim kam rau ua kom meej meej tsis yog kev cia siab rau tus qauv zeb coil.
Shim Stock Rolls vs. Precision Precut Shims vs. Laminated Shims - Koj Yuav Tsum Ua Li Cas?
Order shim stock rolls rau siab- ntim hauv-lub tsev txiav, precision precut shims rau repeatable, kam rau ua -tseem ceeb installation, thiab laminated peelable shims tsuas yog rau kev sim teb -fitting qhov kawg thickness yog txiav txim empirically.
Shim Tshuag muab los ua kauj lossis yob Tshuag yog hom kev lag luam tshaj plaws thaum lub chaw yuav tsum tau txiav ntau cov duab thiab qhov ntau thiab tsawg hauv -tsev, tab sis nws hloov lub nra ntawm kev huv, burr - dawb, raug txiav mus rau tus neeg siv kawg. Precision precut shims - stamped los yog laser-txiav rau tus qauv bore thiab sab nraud- txoj kab uas hla kev sib txuas - raug nqi ntau dua ib daim tab sis tuaj txog ntawm cov ntawv pov thawj, cov ntawv pov thawj thickness, uas yog cov qauv feem ntau sib dhos specifications hu rau. Laminated, peelable shim stock, tsim los ntawm nyias txheej sib txuas nrog cov nplaum, yog qhov muaj txiaj ntsig rau kev sim ua haujlwm - thiab - ua haujlwm yuam kev qhov twg qhov kawg xav tau tuab tsis paub thaum pib, vim tias cov txheej tuaj yeem tev tawm ntawm qhov chaw - tab sis cov nplaum nplaum kab ua rau nws tsis tsim nyog rau cov ntawv thov mus tas li, load-bearing
- Rolls/coil stock: zoo tshaj plaws rau siab - ntim hauv - tsev fabrication nrog shearing uas twb muaj lawm los yog laser - txiav muaj peev xwm.
- Precision precut shims: zoo tshaj plaws rau kev rov ua dua, muaj ntawv pov thawj, kev sib tw -kev teeb tsa tseem ceeb.
- Laminated peelable shims: zoo tshaj plaws rau kev sim teb - haum qhov kawg thickness yog txiav txim siab empirically, tsis yog rau cov txheej txheem ruaj khov.
Yuav Ua Li Cas Thickness Tolerance Yuav Qhia rau ntawm Shim Stock Purchase Order?
Daim ntawv ua tiav shim Tshuag xaj qhia txog qib alloy, temper, nominal thickness, dav, thiab cov chav kawm kam rau ua kom pom tseeb - referencing ASTM A480 rau tus qauv zeb kam rau ua los yog hais qhov nruj dua precision kam rau ua, txij li tus qauv zeb kam rau ua tsis yog los ntawm lub neej ntawd.
Vim tias ASTM A480 kam rau ua dav dav nrog ob lub thickness thiab dav, thiab precision fabricators tuaj yeem tuav cov khoom nruj dua ntawm cov khoom txiav, "stainless steel shim stock, 0.010 in. thick" yog qhov tsis tiav specification. Kev tiv thaiv kev yuav khoom rau kev sib tw - qhov tseem ceeb shims yuav tsum hais tias: alloy (xws li, Hom 304 los yog 316), temper (xws li, tag nrho nyuaj), nominal thickness, strip los yog dawb paug dav, thiab yog "ib ASTM A480 Table A2.1 standard zeb tolerance" los yog ib tug nruj nruj kam rau ua tus nqi nrog rau qhov yuav tsum tau muaj, micrometers kev soj ntsuam cov ntsiab lus ntawv pov thawj).
Cov lus nug nquag
Q: Dab tsi yog tus qauv thickness kam rau ua rau 0.010 in. stainless hlau shim Tshuag?
A: Raws li ASTM A480 Table A2.1, tus qauv txias -rolled coil kam rau ua rau 0.010 nyob rau hauv. nominal thickness yog kwv yees li ± 0.001 in., nyob ntawm qhov dav ntawm sawb. Precision precut shims ntawm tib lub nominal thickness feem ntau tuav txog ± 0.0005 nyob rau hauv.
Q: Puas yog 304 lossis 316 stainless hlau zoo dua rau shim Tshuag?
A: Hom 304 yog tus qauv xaiv rau kev sib xyaw ua ke hauv tshuab sab hauv. Hom 316 yog qhov zoo dua thaum lub shim yuav raug chlorides, marine huab cua, los yog cov txheej txheem chemicals, vim hais tias nws cov ntsiab lus molybdenum zoo heev txhim kho pitting kuj.
Q: Vim li cas shim Tshuag tuaj txawv tempers yog tias thickness yog dab tsi?
A: Temper tswj lub zog tawm los, tsis yog tuab xwb. Lub siab tawv tawv tiv thaiv compressing los yog deforming nyob rau hauv bolt -clamping load, yog li cov ntsia shim khaws nws li - tsim thickness hauv kev pab cuam; ib qho mos, annealed shim tuaj yeem poob qhov tseeb ntawm qhov sib npaug.
Q: Yuav ua li cas nyias tuaj yeem ua stainless hlau shim Tshuag?
A: Cov khoom lag luam muaj txias txias- dov stainless shim Tshuag yog ib txwm ua rau kwv yees li 0.001 in. (0.025 mm), txawm hais tias ntawm qhov ntsuas ntawd ASTM A480 mill kam rau ua tau qhia raws li feem pua ntawm cov tuab es tsis yog tus nqi ruaj khov.
Q: Kuv puas yuav tsum tau siv cov laminated peelable shims rau kev sib tw tshuab mus tas li?
A: Laminated peelable shims yog qhov zoo tshaj plaws rau kev sim teb -fitting, qhov tseeb qhov kawg thickness yog txiav txim empirically. Rau mus tas li, load-cov kabmob sib dhos, cov khoom precision- hauv av lossis precision precut stainless shim yog qhov kev xaiv ruaj khov ntau dua.
