Ntsiab Cai
- 5052 (Mg 2.2–2.8%) thiab 5086 (Mg 3.5–4.5%) yog ob qho tib si uas tsis yog- tshav kub- kho tau Al-Mg alloys; qhov sib txawv magnesium tsav ib ncig ntawm 20% qhov sib txawv hauv qhov kawg tensile lub zog.
- Cov tshuaj lom neeg muaj pes tsawg leeg thiab kev txwv kev siv tshuab yog txhais los ntawm ASTM B210 (kos seamless raj) thiab ASTM B241 (extruded seamless raj thiab yeeb nkab); Lub Koom Haum Aluminium Teal Sheets yog cov kev tswj xyuas muaj pes tsawg leeg siv.
- Qhia meej 5052 rau khoov, qis - cov kab kev ntxhov siab thaum cov ductility thiab cov nqi tseem ceeb tshaj plaws; qhia 5086 rau welded, load-cov kabmob, lossis kev faib tawm- pom zoo cov qauv marine.
- Ob lub alloys tiv taus seawater corrosion; 5086 yog qhov kev nyab xeeb tshwj xeeb rau cov pob qij txha welded thiab txuas txuas ntxiv mus.
- Txais cov ntaub ntawv tsuas yog tawm tsam Daim Ntawv Pov Thawj Zeb Xeem (MTC) uas qhia txog cov khoom siv hluav taws xob tiag tiag thiab cov txiaj ntsig tensile - tsis txhob cia siab rau daim ntawv lo ib leeg.
Vim li cas Alloy Selection Matters rau Marine Piping
Roj kab ntawm lub nkoj ua lag luam, hydraulic circuits rau ntawm ntug dej hiav txwv platform, thiab lawj railing cov qauv tsis zoo ib yam vim li cas thaum cov hlau tsis raug: chloride pitting, kev co qaug zog, thiab lub zog poob ntawm cov pob qij txha. Cov dej ntsev raug, lub cav vibration, thiab siab - cov kua dej hloov pauv tsis muaj qhov cuam tshuam rau kev kwv yees. Ob leeg 5086 thiab 5052 yog 5xxx series (Al-Mg) alloys tsim los rau cov dej ntsev, tab sis lawv tsis hloov pauv.
Cov lus qhia no muab piv rau ob lub alloys los ntawm chemistry, mechanical zog, weldability, corrosion cwj pwm, thiab cov ntawv thov raug kom tus neeg yuav khoom lossis tus tsim engineer tuaj yeem sau qhov tseeb specification ua ntej yuav khoom. Tag nrho cov muaj pes tsawg leeg thiab cov cuab yeej cuab tam hauv qab no yog traceable rau cov qauv thiab cov ntaub ntawv teev nyob rau hauv qhov kawg ntawm tsab xov xwm no; ntau ntau lawm tau txheeb xyuas ib pawg los ntawm Mill Test Certificate (MTC) uas xa nrog txhua qhov kev txiav txim GNEE.
Tshuaj muaj pes tsawg leeg ntawm 5086 Thiab 5052 Txhuas: Magnesium sib txawv
Ob lub alloys muaj zog los ntawm magnesium nyob rau hauv cov kua (tsis yog - tshav kub- kho tau), yog li lub zog thiab corrosion kuj los ntawm magnesium cov ntsiab lus es tsis yog kev kho cua sov. Cov kev txwv muaj nyob hauv qab no ua raws li Aluminium Association International Alloy Designations thiab Chemical Composition Limits (Teal Sheets) thiab ASTM B210/B241 Table 1.
| Element (wt%) | 5086 - txwv | 5052 - txwv |
|---|---|---|
| Silicon (Si) | 0.40 max | 0.25 max |
| Hlau (Fe) | 0.50 max | 0.40 max |
| Copper (Cu) | 0.10 max | 0.10 max |
| Manganese (Mn) | 0.20–0.70 | 0.10 max |
| Magnesium (Mg) | 3.5–4.5 | 2.2–2.8 |
| Chromium (Cr) | 0.05–0.25 | 0.15–0.35 |
| Zinc (Zn) | 0.25 max | 0.10 max |
| Titanium (Ti) | 0.15 max | 0.15 max |
| Lwm tus (txhua / tag nrho) | 0.05 / 0.15 | 0.05 / 0.15 |
| Aluminium | Tshuav | Tshuav |
Cov ntaub ntawv qhov chaw: Aluminium Association Teal Sheets; ASTM B210 / B241 Table 1 (saib Cov Lus Qhia). Cov ntaub ntawv tswj kev sib xyaw yog Cov Ntawv Teal; hla-xyuas txhua qhov kev xa khoom tawm tsam MTC ntsuas kub.
Magnesium yog qhov kev txiav txim siab sib txawv: 5052 zaum ze ntawm 2.5% Mg midpoint, 5086 ze 4.0%. Ntau magnesium txhais tau tias muaj zog dua - daws teeb meem ntxiv zog - thiab ruaj khov dua, tus kheej - kho oxide zaj duab xis hauv dej ntsev. Nws kuj txhais tau tias tsawg formability thiab tus nqi siab dua ib tuj. Qhov kev pauv ntawd- tawm yog raws nraim li qhov seem ntawm tsab xov xwm no suav nrog.
Mechanical Properties los ntawm Temper
Cov cuab yeej nyob ntawm kev kub ntxhov ntau npaum li ntawm cov hlau. "Hom" qhov tseem ceeb hauv qab no yog cov neeg sawv cev zeb cov ntaub ntawv siv rau kev tsim ua ntej; Qhov tsawg kawg nkaus ASTM rau kos seamless raj (ASTM B210) yog cov ntawv cog lus hauv pem teb. MTC qhov tseem ceeb rau koj cov cua sov tshwj xeeb yog cov uas tswj kev lees paub.
| Alloy & Temper | Qhov kawg Tensile (tus qauv) | Yield Strength (zoo) | Elongation (ntev) | ASTM B210 yam tsawg kawg nkaus (kho lub raj) | Lub luag haujlwm ntawm kev pabcuam |
|---|---|---|---|---|---|
| 5052-O(annealed) | 195 MPa (28 ksi) | 90 MPa (13 ksi) | 25% | UTS 172–241 MPa (25–35 ksi); YS Ntau dua lossis sib npaug rau 69 MPa (10 ksi) | Heev khoov radii, sib sau |
| 5052-H32 | 230 MPa (33 ksi) | 195 MPa (28 ksi) | 12% | UTS Ntau dua lossis sib npaug rau 214 MPa (31 ksi); YS Ntau dua lossis sib npaug rau 159 MPa (23 ksi) | Kev hloov pauv dej dav dav |
| 5086-O(annealed) | 260 MPa (38 ksi) | 115 MPa (17 ksi) | 22% | UTS 241–317 MPa (35–46 ksi); YS Ntau dua lossis sib npaug rau 97 MPa (14 ksi) | Tsim cov khoom siv |
| 5086-H32 | 290 MPa (42 ksi) | 205 MPa (30 ksi) | 12% | UTS Ntau dua lossis sib npaug rau 276 MPa (40 ksi); YS Ntau dua lossis sib npaug rau 193 MPa (28 ksi) | Cov qauv marine vuam |
| 5086-H111(extruded) | 275 MPa (40 ksi) | 145 MPa (21 ksi) | 14% | Raws li ASTM B241 (extruded); paub meej nrog MTC | Extruded marine qauv |
Ob lub cev tsis tu ncua yog tsim nyog rau kev tsim cov kav dej: qhov ceev yog 2.68 g / cm³ rau 5052 thiab 2.66 g / cm³ rau 5086; elastic modulus yog kwv yees li 71 GPa (10,000 ksi) rau ob qho tib si; melting ntau yog 607-649℃rau 5052 thiab 585-640℃rau 5086 (Aluminium Association luam tawm cov ntaub ntawv). Qhov hnyav txuag piv rau cov hlau tseem yog lub ntsiab lus tseem ceeb vim li cas shipyards qhia txog txhuas piping txhua.
Txoj cai xaiv Temper:rau kos seamless raj rau ASTM B210, tus qauv tempers yog O thiab H32 / H34 / H36 / H38; rau extruded seamless raj thiab yeeb nkab rau ASTM B241, tempers yog O, H111, H112, thiab F. Qhia lub temper kom meej meej ntawm qhov kev txiav txim yuav khoom - "5086 tube" ib leeg tsis yog tag nrho specification.
Weldability thiab Corrosion Resistance
Vuam
Ob lub alloys txuas tau yooj yim nrog cov roj tungsten arc (GTAW) thiab cov txheej txheem roj hlau arc (GMAW). Siv ER5356 muab tub lim (AWS A5.10) rau 5086-to-5086, 5086-to-5052, thiab 5052-to-5052 pob qij txha; ER5654 yog ib qho kev siv tau rau 5052-to-5052. ER5356 muab kev sib koom ua ke zoo tshaj plaws, xim match, thiab dej ntsev corrosion kuj rau 5xxx tsev neeg.
Ib qho kev thov yuav tsum tau hais meej meej: ib qho annealed (O- temper) 5086 weld khaws feem ntau ntawm nws lub hauv paus-hlau lub zog, vim tias O- lub zog kub yog los ntawm magnesium nyob rau hauv cov khoom sib tov es tsis ua haujlwm txias. Lim-hloov tempers (5052-H32, 5086-H32, 5086-H111) ua soften nyob rau hauv lub tshav kub- cuam tshuam cheeb tsam (HAZ) - tsim welded pob qij txha ntawm as{{18} welded los yog tsis nyob rau hauv tag nrho cov khoom tus nqi. Qhov no siv tau rau ob qho tib si alloys, thiab nws yog vim li cas kev faib tawm-kev cai hauv zej zog nug cov ntaub ntawv welded-joint kev tsim nyog.
Qhov kev pabcuam thib ob- daim ntawv txwv: 5086 muaj ntau dua 3% magnesium, yog li kev pabcuam txuas ntxiv saum toj li 65-80℃tuaj yeem txhawb kev nkag siab ntawm qhov ntev ntev. Paub meej tias qhov siab tshaj - qhov ntsuas kub rau koj daim ntawv thov tshwj xeeb nrog rau kev faib tawm hauv zej zog lossis txoj cai tsim.
Corrosion kuj
Ob lub alloys muaj kev tiv thaiv zoo rau dej hiav txwv thiab dej hiav txwv; lawv lub ntuj oxide zaj duab xis tus kheej - kho tom qab kev puas tsuaj. Hauv kev xyaum, 5086 cov ntsiab lus magnesium siab dua muab cov yeeb yaj kiab nruj dua, ruaj khov dua, uas yog vim li cas nws yog qhov nyiam cov raj hlau rau cov dej ntws mus tas li lossis tshuaj tsuag - thaj chaw pabcuam.
Rau lub plhaub phaj thiab daim ntawv, ASTM B928 txhais cov marine-qib 5086 (tempers H116/H321) nrog kev ntxhov siab- kev tshuaj ntsuam corrosion; rau cov raj thiab cov yeeb nkab, kev ua raws li tau pom los ntawm MTC thiab, qhov xav tau, kev faib tawm- kev soj ntsuam hauv zej zog (ABS, DNV, LR, BV). Qhov twg aluminium piping contacts stainless hlau los yog tooj liab alloys, siv dielectric cais los tiv thaiv galvanic corrosion.
Daim Ntawv Thov Kev Taw Qhia
Tsis txhob dhau -engineer ib qhov system thiab ua kom cov peev nyiaj nce ntxiv. Shipyards thiab industrial manufacturers feem ntau faib daim ntawv thov raws li hauv qab no.
Qhia 5052 thaum:
- Complex routing thiab nruj- vojvoog dabtsi yog khoov dominate (tswj cua kab, vent tubes, sab hauv conduits).
- Kev pabcuam yog qis- hloov pauv kua dej ntawm qhov kub thiab txias.
- Qhov tsis yog- qauv: sab hauv tes, consoles, trim, tubular thav duab.
- Tus nqi thiab cov khoom muaj ntau dua lub zog margin.
Qhia 5086 thaum:
- Lub raj yog welded rau hauv ib qho load-cov qauv kabmob: masts, booms, lawj railings, davit crane thav duab, saib xyuas-nkoj framing.
- Siab -siab marine hydraulic lossis firewater systems xav kom muaj zog seamless yeeb nkab.
- Cov kab yog txuas ntxiv submerged los yog nyob rau hauv qhov ncaj qha tshuaj tsuag cheeb tsam ntawm ib tug offshore installation.
- Txoj haujlwm yuav tsum dhau qhov kev faib tawm- kev tshuaj xyuas hauv zej zog (ABS, DNV, LR, BV).
Daim ntawv teev kev txiav txim siab ceev rau kab tshiab lossis qauv:
- Puas yog nws nqa cov khoom thauj khoom? → yog: 5086
- Puas yog nws feem ntau welded? → yog: 5086 (O lossis raws li -welded tsim khoom)
- Nruam dej hiav txwv immersion los yog tshuaj tsuag? → yog: 5086
- Yuav tsum muaj kev pom zoo rau kev faib qeb? → yog: 5086, nrog rau cov ntaub ntawv hauv chav kawm
- Loj dabtsi yog khoov nrog tsawg load? → yog: 5052
- Cov peev nyiaj -limited, tsawg- kev pabcuam pheej hmoo? → yog: 5052
Kev tsim khoom: Seamless vs. Porthole-Extruded
Rau marine- qib tubing, txoj kev tsim khoom tseem ceeb npaum li cov hlau. Ob txoj kev seamless tau teev nyob rau hauv cov qauv:ASTM B210 kos seamless raj- ib qho extruded hollow yog kos hla lub mandrel kom nruj sab nraud - txoj kab uas hla thiab phab ntsa kam rau ua, haum rau cov kua hloov pauv, ntsuas, thiab coiled mov; thiabASTM B241 seamless extruded raj thiab yeeb nkab- ua ncaj qha los ntawm tuag-thiab-mandrel extrusion nyob rau hauv qhov ntau thiab tsawg, nrog O/H111/H112 tempers, haum rau cov qauv kev pab cuam.
Cov txheej txheem (porthole) extrusion ua cov hlab nrog longitudinal weld seam; cov no yog qhov zoo rau cov uas tsis yog - cov tswvcuab hauv cov txheej txheem siab tab sis yuav tsum tsis txhob qhia qhov twg hydraulic siab surges tuaj yeem ua tau. Rau siab - kev pabcuam siab, GNEE pom zoo kom kos lossis mandrel-extruded seamless 5086: tsis muaj seam ntev, tsis muaj kev sib koom ua ke los sib cais hauv kev sib tw siab. Kev xa khoom tiav suav nrog MTC nrog tus lej xov tooj cua sov, chemistry tiag tiag, thiab cov txiaj ntsig tensile, yog li tus neeg yuav khoom tuaj yeem txheeb xyuas kev ua raws li qhov tshwj xeeb yam tsis muaj qhov thib peb - rov kuaj dua.
GNEE Peev Xwm thiab Ntawv Pov Thawj
- Qhov loj me: sab nraud 4-600 mm; phab ntsa thickness 1-25 mm; txheem 6 m ntev los yog precision txiav - mus rau -ntev.
- Cov ntaub ntawv khoom: kos seamless raj (ASTM B210) thiab extruded seamless raj / yeeb nkab (ASTM B241); Kev kub ceev O, H32, H111, H112.
- Kev ruaj ntseg zoo: txhua batch ships nrog cov ncauj lus kom ntxaws Mill Test Certificate (MTC) xyuas cov tshuaj muaj pes tsawg leeg thiab txhua yam muaj zog.
- Kev ua raws li Marine: tubing tuaj yeem muab rau ABS, DNV, LR, thiab BV cov cai rau kev tsim khoom thoob ntiaj teb.
- Kev tswj kev kam rau siab: sab nraud thiab phab ntsa tuab tswj tau rau ASTM B210 thiab ASTM B241 cov rooj kam rau ua kom haum- nrog rau cov qauv fittings.
- Lub tuam txhab keeb kwm yav dhau: HENAN GNEE NEW MATERIAL CO., LTD ua haujlwm ncaj qha nrog tsib lub koom haum koom tes hauv Anyang, Tianjin, Hong Kong, thiab Singapore.
Tau txais cov lus qhia tshwj xeeb-Cov ntawv pov thawj
Xa koj cov alloy, temper, txheej kab, phab ntsa thickness, ntev, thiab ntau - los yog upload ib daim duab CAD - thiab GNEE engineering team yuav teb nrog ib daim ntawv teev cov ntaub ntawv -txoj kev hais, nrog rau MTC cov ntaub ntawv thiab, qhov twg yuav tsum tau, kev faib tawm - cov ntaub ntawv hauv zej zog. Los ntawm ib pob ntawm 5052 yeeb nkab rau kev kho rau 20 metric tons ntawm 5086 seamless raj rau lub nkoj tshiab tsim, tib lub Hoobkas - ncaj qha traceability siv.
Tau txais cov lus hais hauv 24 teev
