GNEE txawv nws tus kheej raws li kev ntseeg siab thoob ntiaj teb cov khoom lag luam, tshwj xeeb hauv cov khoom zoo ASTM A268 TP410 seamless raj rau cov cua kub exchangers. Nrog rau ntau tshaj 18 xyoo ntawm kev paub dhau los thiab cov ntaub ntawv pov thawj hauv kev muab cov khoom tseem ceeb rau kev lag luam xws li kev ua tshuaj lom neeg, lub zog tsim hluav taws xob thiab cov roj thiab roj, peb tau dhau los ua tus neeg nyiam tshaj plaws rau cov neeg siv khoom nrog cov kev xav tau hauv kev siv hluav taws xob. Peb cov khoom raug xa tawm mus rau ntau tshaj 50 lub teb chaws thoob ntiaj teb thiab tau txais ntau daim ntawv pov thawj thoob ntiaj teb, xws li ISO 9001, PED thiab NACE MR0175.
Peb cov ASTM A268 TP410 seamless raj yog tsim tshwj xeeb los tiv thaiv kev ua haujlwm tsis zoo uas tau ntsib thaum lub sijhawm ua haujlwm kub pauv. Txhua batch ntawm TP410 hlab tau txais cov tshuaj annealing ntawm qhov kub siab ntawm 1050-1100 degrees, ua raws li qhov txias txias. Cov txheej txheem no ua kom cov tsim ntawm cov qauv granular tsis sib xws thiab ua tiav cov kev sib cais ntawm carbides, yog li txo qhov kev pheej hmoo ntawm intergranular corrosion.
Los ntawm cov txheej txheem quenching thiab tempering, peb nruj me ntsis tswj qhov hardness kom nws tsawg dua los yog sib npaug rau HB 217; Tus nqi no yog qhov zoo hauv qab qhov txwv siab ntawm HB 241 tau teev tseg hauv ASTM A268, tiv thaiv kev tawg ntawm cov hlab ntsha hauv siab thiab thermal stress.
ASTM A268 TP410 stainless hlau raj rau cov khoom siv hluav taws xob muaj qhov sib txawv ntawm txoj kab uas hla ntawm ± 0.1 hli, phab ntsa thickness kam rau ua ntawm ± 0.08 hli thiab qhov ncaj ntawm Tsawg dua lossis sib npaug li 0.5 hli / m, lav qhov zoo meej haum ntawm cov hlab thiab cov nplooj ntawv tubular. Qhov roughness ntawm lawv sab hauv yog tswj kom tswj tau nws ntawm Ra tsawg dua lossis sib npaug li 0.4 μm, uas txo qhov tsim ntawm cov nplai thiab txhim kho kev ua haujlwm ntawm thermal pauv, ua rau lawv tshwj xeeb rau kev ua haujlwm kub, txog 600 degrees.
Tshuaj muaj pes tsawg leeg ntawm ASTM A268 TP410 Round Pipe
| C% | Mn% | P% | S % | Yog % | Cr% |
|---|---|---|---|---|---|
| Max 0.15 | Max 1.00 Nws | Max 0.040 | Max 0.030 | Max 1.00 Nws | 11.5–13.5 Nws |
Mechanical Properties ntawm ASTM A268 TP410 Stainless Hlau Seamless Yeeb Nkab
| Tempering kub (degree) | Tensile zog (MPa) | Elastic txwv 0.2% (MPa) | Elongation (% hauv 50 mm) | Brinell Hardness (HB) | Charpy V Impact (J) |
|---|---|---|---|---|---|
| Annealed * | Min 480 | Min 275 | Min 16 | - | - |
| 204 | 1310 | 1000 | 16 | 388 | 30 |
| 316 | 1240 | 960 | 14 | 325 | 36 |
| 427 | 1405 | 950 | 16 | 401 | # |
| 538 | 985 | 730 | 16 | 321 | # |
| 593 | 870 | 675 | 20 | 255 | 39 |
| 650 | 755 | 575 | 23 | 225 | 80 |
ASTM A268 Stainless Hlau Yeeb Nkab Dimension Tolerances
| Sab nraud txoj kab uas hla, hauv [mm] | OD kam rau ua, hauv [mm] | Phab ntsa thickness,% | nyias phab ntsa kav |
|---|---|---|---|
| Txog 1⁄2 [12.7], excl. | ± 0.005 [0.13] | ± 15 | - |
| 1⁄2 txog 11⁄2 [12.7–38.1], excl. | ± 0.005 [0.13] | ± 10 | Tsawg dua 0.065 nti [1.6mm] nominal |
| 11⁄2 txog 31⁄2 [38.1–88.9], excl. | ± 0.010 [0.25] | ± 10 | Tsawg dua 0.095 in. [2.4mm] nominal |
| 31⁄2 txog 51⁄2 [88.9–139.7], excl. | ± 0.015 [0.38] | ± 10 | Tsawg dua 0.150 nti [3.8mm] nominal |
| 51⁄2 rau 8 [139.7–203.2], incl. | ± 0.030 [0.76] | ± 10 | Tsawg dua 0.150 nti [3.8mm] nominal |
ASME SA 268 Stainless Hlau Seamless Yeeb Nkab Thaum tshav kub kub kho
| Kev kho cua sov | Ntau yam |
|---|---|
| Kev ntxhov siab | 650℃rau 750℃(1200℃F txog 1380℃F) |
| Forging | 1100℃txog 1250℃(2012℃F txog 2282℃F) |
| Kev daws annealing | 1010℃txog 1121℃(1850℃F txog 2050℃F) |
| kev kho mob cryogenic | -70℃rau -196℃(-94℃F txog -320℃F) |
TP410 ua li cas nyob rau hauv cov nqe lus ntawm weldability thaum tshav kub exchanger manufacturing?
TP410 muaj lub siab tawv. Txhawm rau tiv thaiv kev tawg thaum lub sijhawm vuam, nws raug nquahu kom ua preheating ntawm qhov kub ntawm 200 thiab 300 degrees. Tom qab vuam tempering ntawm qhov kub ntawm 650 thiab 750 degrees feem ntau yuav tsum tau los kho cov tawv nqaij hauv qhov chaw welded. Hom 410 muab tub lim hlau (ntawm cov muaj pes tsawg leeg zoo sib xws) lossis hom 309L austenitic muab tub lim hlau (nyob ntawm qhov nruab nrab ua haujlwm) feem ntau siv.
TP410 ua haujlwm li cas hauv qhov chaw corrosive?
TP410 pom zoo corrosion kuj tiv thaiv tsis muaj zog acids, alkalis, dej tshiab thiab atmospheric tej yam kev mob. Nws tsis haum rau ib puag ncig uas muaj cov tshuaj chloride siab. Yog hais tias qhov nruab nrab kev khiav hauj lwm muaj salinity siab los yog muaj zog acids, peb xav kom peb cov neeg muas zaub ntsuam xyuas qhov yuav tsum tau xaiv rau ib tug ntau dua qeb khoom, xws li superferritic stainless hlau los yog duplex stainless hlau.
Kev Tswj Xyuas Zoo thiab Ntawv Pov Thawj
Txhua ASTM A268 TP410 stainless hlau raj ua tiav kev tshuaj xyuas nruj:
Tshuaj ntsuam xyuas: Spectrometry los xyuas qhov muaj pes tsawg leeg.
Mechanical Tests: Tensile, hardness and impact tests (Charpy with V notch at -29 degree).
Kev kuaj tsis yog kev puas tsuaj (NDT): Kev ntsuas tam sim no, ultrasonic thiab hydrostatic xeem.
Cov ntawv pov thawj: ISO 9001, ASME Tshooj VIII, PED 2014/68/EU thiab NACE MR0175 rau kev pabcuam hauv cov kua qaub (kev pabcuam qaub).
Ntim
Hex Bundling: Rau me me mus rau nruab nrab txoj kab uas hla seamless yeeb nkab, hexagonal bundling muaj kev ruaj ntseg siab tshaj plaws thiab tiv thaiv cov pob tawg.
Hlau pluaj reinforcement: Yam tsawg kawg ntawm 3 mus rau 5 steel straps yog thov rau bundling; Cardboard los yog roj hmab pads yuav tsum tau muab tso rau hauv lub pluaj los tiv thaiv lawv los ntawm kev puas tsuaj rau cov yeeb nkab nto.
Woven Sack Wrapping: Tag nrho cov pob yog nruj nreem qhwv nrog cov ntaub tsis muaj dej (feem ntau yog xim dawb lossis ntsuab) los muab kev tiv thaiv los ntawm nag thiab nto khawb.
