Feem ntau cov ntawv hlau rework tsis pib ntawm lub xovxwm nres lossis lub vuam bay. Nws pib ntawm daim duab.
Thaum koj PO tsaws rau hauv tus neeg tsim khoom lub thawv ntawv, txhua kab ntawm daim duab no dhau los ua cov lus qhia meej - lossis qhov kev xav tias ib tus neeg yuav tsum ua rau koj. Qhov kev xav ntawd yog qhov kev sib tham txog "vim li cas nws raug nqi ntau dua" lossis "vim li cas ho tsis haum rau ntawm qhov chaw" feem ntau pib.
Tom qab 20 xyoo ntawm kev xa tawm cov ntawv hlau thiab cov phaj hnyav rau hauv Australia, ntawm no yog qhov peb tau kawm: cov duab kos uas xa tuaj raws sijhawm, haum rau thawj qhov kev teeb tsa, thiab tsis txhob tshuab cov peev nyiaj yuav luag txhua lub sijhawm.tsib yam tseem ceebtxoj cai pem hauv ntej.
1. Cov khoom qib - Ua ib qho tshwj xeeb, nqes mus rau tus qauv
"Mild steel" tsis yog qhov tshwj xeeb.Nws yog qeb.
Yog tias koj daim duab yooj yim hais tias "cov hlau me me," koj tus neeg tsim khoom yuav tsum xaiv - thiab qhov kev xaiv ntawd tuaj yeem ua viav vias ob qho tib si tus nqi thiab lub sijhawm ua haujlwm los ntawm 20% lossis ntau dua. Feem ntau Australian references yog:
AS/NZS 3678 Qib 250rau cov qauv phaj dav dav
AS/NZS 3678 Qib 350rau siab dua - lub zog phaj (tsim qauv mining, mobile cog, thauj thav duab)
AS/NZS 1599rau cov ntawv txias -rolled
Kev qhia txog tus qauv ntxiv rau qib yuav tshem tawm qhov kev kwv yees thiab ntsuas qhov ntsuas qhov ntsuas tau.
2. Thickness kam rau ua - Commercial vs Precision
Lub phaj 3 hli thiab 3 hli phaj tsis yog tib lub phaj.
Mill kam rau ua ntawm tus qauv phaj feem ntau yog ± 0.3 hli - zoo rau cov qauv thav duab, tab sis muaj teeb meem rau precision brackets, slotted tabs, los yog mating flanges. Feem ntau rework ntawm lub teeb - ntsuas daim ntawv yog los ntawm kev hu tawm lub nominal thickness yam tsis muaj chij seb yuav tsum tau nruj kam rau ua.
Txoj cai ntawm tus ntiv tes xoo:yog hais tias ib feem mates nrog rau lwm qhov, qhia nruj kam rau ua. Yog hais tias nws tsuas yog cov qauv phaj, kev lag luam kam rau ua zoo.
3. Sab hauv Khoov Radius - Qhov twg Feem ntau Cov Cracks pib
Hlau xav khoov, tab sis nws kuj xav tawg yog tias koj thawb nws deb dhau.
Ib txoj cai ib txwm yogsab hauv khoov vojvoog Ntau dua lossis sib npaug ntawm cov khoom tuab(qhov "1T yam tsawg kawg nkaus"). Tighter khoov tuaj yeem dhau QC thawj zaug, tom qab ntawd ua tsis tiav hauv daim teb raws li micro- tawg tawm hauv qab thauj khoom. Rau qhov chaw uas mus rau hauvAS/NZS 4680 kub-dip galvanizing, ntse khoov kuj nyias cov zinc txheej txoj cai ntawm lub vojvoog kab - qhov tseeb qhov chaw corrosion ua ntej.
Yog tias koj tus qauv tsim xav tau kev khoov nruj,hu nws tawm ntawm daim duab: "Inside radius=1.5 mm ± 0.2" - tsis txhob muab faus rau hauv 3D cov ntaub ntawv lossis xav tias tus neeg teb xov tooj yuav khaws nws.
4. Weld Symbols - Tsawg yog Ntau Ntau
Ib qho yooj yim tshaj plaws weld cim rau ntawm daim ntawv hlau kos duab yog qhov yooj yim tshaj plaws: fillet weld nrog ib ceg loj. Tab sis cov ceg loj tsis yog qhov loj me uas koj yuav tsum tau suav nrog.
Lub 6 hli fillet weld tsis muab rau koj 6 hli ntawm lub zog ntawm caj pas - nws lub caj pas tiag tiag yog kwv yees li 4.2 hli. Yog tias koj tus qauv tsim muaj caj pas,qhia lub caj pas ntawm daim duab, tsis yog ceg. Siv AWS A2.4 lossis ISO 2553 weld symbology, thiab txhua lub khw tsim nyog yuav nyeem nws yam tsis muaj kev hu rov qab.
5. Kev tiv thaiv nto - Txheej Txheem Txheej Txheem
Yog hais tias ib feem yog mus rau sab nraud, ze ntawm huab cua ntsev, los yog mus rau hauv lub mine ntxuav -down ncoo,qhov kev tiv thaiv nto specification yog ua haujlwm ntau npaum li cov qauv tsim.
Rau Australian tej yam kev mob, feem ntau siv yogAS/NZS 4680 kub-dip galvanizing- ib txheej txheej txheej txheej ib cheeb tsam, ntxiv rau batch thiab soj ntsuam yuav tsum tau. Yog tias koj daim duab tsuas yog hais tias "galvanize," koj tus neeg muag khoom tuaj yeem siv cov txheej txheem zinc txheej uas ua tsis tau li ntawm 18-24 lub hlis ntawm ntug dej hiav txwv.
Tswv yim:qhia AS/NZS 4680 ntxiv rau cov chav kawm yog tias muaj feem xyuam (A50, B50, thiab lwm yam). Nws xauv hauv txheej hnyav thiab cov ntaub ntawv tshuaj xyuas.
Tsib nqe lus nug tsim nyog nug ua ntej koj tso PO
Yog tias koj xav tau ceev, cov lus hais meej meej - thiab qhov chaw uas haum rau thawj qhov kev teeb tsa - sim nug koj tus kws tsim cov lus nug tsib lo lus nug ua ntej xa daim duab:
Cov ntaub ntawv twg qib thiab tus qauv tau raug hais?
Puas yog thickness kam rau ua lag luam lossis precision?
Yam tsawg kawg nkaus hauv khoov vojvoog uas koj tuaj yeem tuav tsis tau tawg?
Puas yog weld qhov loj me hais tias yog ceg lossis caj pas?
Dab tsi txheej txheem thiab thickness yog suav nrog?
Qhov nrawm dua koj kaw cov no rau ntawm daim duab nws tus kheej, qhov tsawg dua qhov xav tsis thoob ntawm koj lub sijhawm tsim khoom.
Daim duab ntshiab tsis ua rau koj qeeb. Lawv tshem tawm lub voj voog rov ua haujlwm uas raug nqi koj peb lub lis piam thiab kev thauj khoom thauj.
