Yog vim li cas Standards Matter rau Thaum tshav kub kub Exchanger Tubes
Thaum tshav kub kub exchanger tubes ua hauj lwm nyob rau hauv siab, kub, thiab corrosive txias dej, yog li ntawd lawv tau muas rau lub teb chaws thiab thoob ntiaj teb cov qauv uas kho cov alloy muaj pes tsawg leeg, qhov ntev tolerances, temper, thiab txais kev kuaj. Kev qhia lub raj los ntawm tus qauv thiab qib ib leeg yog txaus rau lub zeb los tsim thiab sim cov khoom sib haum; ntxiv cov lus piav qhia xoob tsuas yog caw cov khoom tsis sib haum thiab kev tshuaj xyuas ua tsis tiav.
Kev Tswj Xyuas Specifications
| Txuj | Scope |
|---|---|
| ASTM B111 | Tooj thiab tooj liab- alloy seamless condenser raj thiab ferrule Tshuag |
| ASME SB 111 | Boiler thiab siab- nkoj sib npaug ntawm B111 |
| ASTM B 359 Cov Lus Qhia Tshwj Xeeb | Tooj liab thiab tooj liab- alloy seamless condenser thiab kub exchanger raj nrog ib tug fins |
| ASTM B 395 Cov Lus Qhia Tshwj Xeeb | U-khoov seamless condenser thiab tshav kub exchanger raj |
| ASTM B 543 3 | Welded tooj liab thiab tooj liab-alloy heat exchanger tubes |
| GB/T 8890 | Suav seamless tooj liab alloy kub exchanger raj |
| TS EN 12451 | European seamless round tooj liab alloy raj rau cua sov exchangers |
| JIS H3300 | Japanese tooj liab thiab tooj liab- alloy seamless kav thiab raj |
Main Alloy Tsev Neeg
| Tsev neeg | Hom Qib | Cov dej txias kom haum |
|---|---|---|
| Ntshiab tooj liab (DHP / DLP) | C12200, C12000 | Ntxuav cov dej tshiab, kev hloov hluav taws xob dav dav |
| Admiralty tooj dag | C44300 | Cov dej ntshiab thiab muaj kuab heev |
| Aluminium tooj dag | C68700 | Dej hiav txwv, nruab nrab ceev |
| 90/10 tooj liab -nickel | C70600 | Dej hiav txwv, dej qias neeg, txog li 3 m/s |
| 70/30 tooj liab -nickel | C71500 | Siab - nrawm thiab dej hiav txwv muaj kuab paug |
| Chromium khobronickel | C72200 | Cov dej hiav txwv hnyav thiab kev pabcuam tshuaj lom neeg |
Hom Loj thiab Temper Ranges
Sab nraud txoj kab uas hla: feem ntau 9.5 hli mus rau 31.8 hli rau condenser raj; qhov loj me txog li 50 mm rau cov khoom sib txawv tshwj xeeb.
Phab ntsa thickness: 0.7 hli mus rau 2.1 hli raug, mus txog 3.2 hli rau siab - lub luag haujlwm siab.
Ntev: ncaj raj 3 mus rau 15 m; U- khoov hlab nrog ceg ntev ib daim duab.
Tempers: annealed (mos) rau dov rau hauv cov ntawv raj, lub teeb kos qhov xav tau lub zog; finned tubes muab annealed.
Kev xeem yuav tsum tau
Cov khoom siv tau ntawv pov thawj feem ntau suav nrog kev tshuaj xyuas tshuaj, ntsuas tensile, flattening thiab flaring los yog expansion test, thiab 100 feem pua eddy -tam sim no los yog hydrostatic testing. Qhov twg qhov kev pabcuam tseem ceeb, cov kev ntsuas ntxiv tau teev tseg: qhov seem- kev ntsuas kev ntxhov siab (mercurous nitrate lossis ammonia vapor), kev tshawb fawb hardness, thiab ultrasonic lossis eddy- kev tshuaj xyuas tam sim no raws li cov qauv khoom. Txhua lub raj ntim nkoj nrog daim ntawv pov thawj zeb kuaj nqa cov lej ntsuas kub, muaj pes tsawg leeg, thiab cov txiaj ntsig kev xeem.
Yuav ua li cas qhia ib lub raj kom raug
Qhia tus qauv thiab qib, piv txwv li ASTM B111 C70600.
Xeev sab nraud txoj kab uas hla, phab ntsa thickness, ntev, thiab ncaj los yog U- khoov yuav tsum tau.
Qhia qhov kub thiab txias tshwj xeeb los yog qhov yuav tsum tau ua rau saum npoo.
Qhia qhov kev xeem qhov kev xeem: cov qauv xeem, ntxiv rau ib qho ntxiv NDT lossis thib peb- kev tshuaj xyuas tog.
Paub meej txog cov dej txias chemistry thiab tshaj tawm kom cov tsev neeg hlau yog tsim nyog rau lub luag haujlwm.
Cov lus nug nquag
Q: Tus qauv twg yuav tsum tau siv rau seawater condenser raj?
A: ASTM B111 nrog dej hiav txwv- qib alloy xws li C68700, C70600, C71500, lossis C72200; ASME SB111 yog siv rau siab- nkoj tsim.
Q: Dab tsi yog qhov txawv ntawm lub condenser raj thiab lub tshav kub exchanger raj?
A: Functionally tib yam khoom tsev neeg; ASTM B111 npog ob qho tib si seamless condenser thiab tshav kub exchanger raj, nrog U- khoov thiab finned variants nyob rau hauv cov qauv sib txawv.
Q: Puas yog welded tooj liab alloy raj tso cai rau cov cua sov sib hloov?
A: Yog, qhov twg ASTM B543 siv thiab tus qauv tso cai welded tsim; seamless raj tseem yog lub neej ntawd rau lub luag haujlwm tseem ceeb ntawm condenser.
Q: Dab tsi temper yuav tsum condenser raj?
A: Annealed los yog lub teeb - kos. Annealed raj yob rau hauv cov ntawv raj feem ntau ntseeg tau; lub teeb-kos muab lub zog me ntsis dua.
Q: Daim ntawv pov thawj zeb xeem muaj dab tsi?
A: Tus naj npawb cua sov, tshuaj muaj pes tsawg leeg, cov txiaj ntsig kev ntsuas tshuab, ntsuas qhov ntev thiab qhov chaw soj ntsuam, thiab cov kev sim siv, raws li tus qauv siv.
Q: Ib qho hlau puas tuaj yeem ua rau tag nrho cov dej txias zoo?
A: Tsis yog. Copper thiab admiralty brass suits dej huv; aluminium brass thiab tooj liab- nickel qib yuav tsum muaj rau cov dej hiav txwv, thiab muaj kuab paug los yog siab heev - dej nrawm xav tau C71500 lossis C72200.
