ASTM B705 UNS N08825 (Incoloy 825) Welded Nickel Alloy Pipe: Kugona Kugadzira & Magadzirirwo Echigadzirwa

Tsananguro pfupi:

Womic Steel inopa ASTM B705 UNS N08825 (Incoloy 825) welded nickel alloy pombi dzenzvimbo dzinoparadza zvakanyanya dzinosanganisira maacid akasimba (sulfuric, phosphoric, nitric), mvura yegungwa, sour service ine H₂S yakawanda uye chloride, uye mashandisirwo ekupisa kwakanyanya. N08825 inopa simba shoma re240 MPa (35,000 psi) uye simba rekudhonza re550 MPa (80,000 psi) rine ductility yakanaka. Chiumbwa ichi chine nickel (38-46%), chromium (19.5-23.5%), molybdenum (2.5-3.5%), copper (1.5-3.0%), uye titanium stabilization, zvichipa kudzivirira kwakanyanya kugomba, cravice corrosion, uye stress corrosion cracking munzvimbo dzese dziri kuderedza uye dzinopisa. Kugadzira kunosanganisira ERW yemadhayamita madiki uye EFW yemadhayamita makuru, ese ane kupinda kwakazara uye post-weld solution annealing. Dhayamita yekunze kubva pa6.35mm kusvika 610mm (1/4″ – 24″) yeERW; kusvika 1219mm (48″) yeEFW/LSAW, ukobvu hwemadziro 0.5mm – 50mm, kureba kwakajairwa kusvika 12m, custom kusvika 18m. Chitupa chemugayo, hydrotest, 100% UT, solution annealed uye pickled finish, beveled kana plain ends dziripo. Dzakakodzera sulfuric acid plants, phosphoric acid production, nuclear fuel reprocessing, offshore sour service (high H₂S + chlorides), hot water cooling (high tembiricha), chemical tankers, uye flue gas desulfurization (FGD) absorber outlets.

Welded Nickel Alloy Pipe Saizi:Dhayamita yekunze: 6.35mm – 1,219mm (1/4″ – 48″), Ukobvu hwemadziro: 0.5mm – 50mm (Ronga 5S, 10S, 40S, 80S), Kureba: 6m – 12m yakajairika, urefu hwakatarwa hunosvika 18m

Standard & Giredhi reWelded Nickel Alloy Pipe:ASTM B705 (pombi yakasungirirwa) / ASTM B709 (chubhu yakasungirirwa) UNS N08825; zvakare ASME SB-705; Yakaenzana neIncoloy 825; Werkstoff 2.4858; EN 2.4858

Kushandiswa kweWelded Nickel Alloy Pipe:Zvivako zveSulfuric acid (oleum, H₂SO₄ yakakora, basa reasidhi yakasanganiswa), kugadzirwa kwephosphoric acid (kunyorova, ma evaporator), kugadziriswazve kwemafuta enyukireya (nitric acid ine fluorides), basa rekunze kwemvura yakasanganiswa (H₂S yakakwira ine chloride), masisitimu ekutonhodza mvura yegungwa ane tembiricha yakakwira (50-80°C), matangi emakemikari nemapipi ekutakura zvinhu (makemikari akasiyana-siyana akasimba), flue gas desulfurization (FGD) outlet ducts, pickling uye acid regeneration plants, hydrofluoric acid service (dilute), kurapwa kwemvura yakasviba (tsvina yeindasitiri inoparadza zvakanyanya), kugadzirwa kwemafuta negesi neCO₂, H₂S, uye chloride yakakwira (basa rinotapira uye rakapfava)

Simbi yeWomic inopa mitengo yepamusoro uye inokwikwidzana yeASTM B705 UNS N08825 welded nickel alloy pipe, Incoloy 825 welded tube, CRA pipe, acid resistant alloy pipe, sour service nickel alloy pipe. Chitupa chemuchina EN 10204 3.1/3.2, hydro test, UT, solution annealed, beveled/plain ends, pickled finish inowanikwa. Kuwanikwa kwefekitori zvakananga kumapurojekiti emakemikari, enyukireya, egungwa, uye eacid pasi rese.

Tumira email kwatiri Zvimiro zveChigadzirwa

Ruzivo rweChigadzirwa

Matagi eChigadzirwa

1. Simbi yeWomic: Kugona Kugadzira & Simba reKambani

Womic Steel Group ikambani inogadzira zvinhu zvikuru uye inotumira kunze kwenyika pasi rose ine ruzivo rwemakore anopfuura makumi maviri mukugadzira mapaipi anodzivirira ngura (CRA) anosanganisira nickel alloys, duplex stainless steels, uye titanium. Nzvimbo yedu yekugadzira mapaipi e nickel alloy welded inoshandisa matekinoroji akasiyana-siyana epamusoro-soro ekushongedza nekutonga kwakasimba kwekupisa uye kurapwa kwekupisa mushure mekushongedza kuti alloy irambe ichidzivirira ngura uye hunhu hwemakanika:

●Mutsetse weERW (wekushongedza magetsi unodzivirira magetsi):Kune dhayamita kubva pa6.35mm kusvika 610mm (1/4″ – 24″), ukobvu hwemadziro kubva pa0.5mm kusvika 12.7mm. Kushongedza kwemhepo kwakanyanya nekupisa kushoma kudzivirira kupatsanurwa. Yakanakira mapaipi madiki kusvika pakati nepakati eN08825 etambo dzezvishandiso, jekiseni remakemikari, uye mapaipi ekugadzirisa.

●Mutsetse weEFW (Electric Fusion Welding):Kune dhayamita kubva pa219mm kusvika 1219mm (8″ – 48″), ukobvu hwemadziro kubva pa4.0mm kusvika 50mm. TIG (GTAW) root pass ine SAW fill pass, uchishandisa matching filler metal (ERNiCrMo-3 kana ERNiCrMo-10) uye ine gasi shielding.

●Mutsetse weLSAW / SAWL weNickel Alloys:Kune dhayamita kubva pa406mm kusvika 1524mm (16″ – 60″), ukobvu hwemadziro hunosvika 50mm. Kunyudza arc yakanyudzwa mumapuleti enickel alloy akamonerwa nekupisa kunodzorwa.

Mapaipi ese enickel alloy welded anogadziriswa ne solution annealing (kupisa) pa 980-1040°C zvichiteverwa nekudzima mvura kana kutonhora kwemhepo nekukurumidza kuti adzorere kuramba ngura uye kunyungudutsa chero carbide kana intermetallic precipitates, zvichiteverwa nekunyungudika uye kupfava.

Zvitupa zveHunhu & Kutevedzera Mutemo:

● ISO 9001:2015 Yakasimbiswa

● PED 2014/68/EU (CE Marking) yemidziyo yekumanikidza

● EN 10204 3.2 Chitupa chine kusimbiswa kwebato rechitatu (TÜV, BV, SGS, LR)

● Kuongorora Kwechitatu (TPI) kwakatenderwa neSGS, BV, ABS, DNV, TÜV

● NACE MR0175 / ISO 15156 yekushandira sour (H₂S)

● Kodhi yeASME Boiler nePressure Vessel (Chikamu VIII, Chikamu 1) kana zvakumbirwa

Womic Steel inopa mapaipi enickel alloy welded kunyika dzinopfuura makumi matatu muindasitiri dzekugadzira makemikari, kugadzira fetereza, zvenyukireya, uye dzekunze kwenyika.

Kuchinjika Kwekugadzira:

● ERW: 6.35–610mm OD × 0.5–12.7mm Uzito × ≤ 12m

● EFW: 219–1219mm OD × 4.0–50mm WIT × ≤ 12m (yakareba kana yakumbirwa)

● LSAW: 406–1524mm OD × 6.0–50mm WIT × ≤ 18m

● Sarudzo dzekupedzisa: Yakanamirwa uye yakasvinwa, yakanyoroveswa (yemachubhu madiki)

2. ASTM B705 UNS N08825: Kuumbwa kwezvinhu uye Hunhu hwekushanda

UNS N08825 (Incoloy 825) imhando ye nickel-iron-chromium alloy ine molybdenum, copper, uye titanium. Yakagadzirwa kuti ipe simba rakanaka kune ese ari maviri reduction uye oxidizing acids, pamwe ne chloride-induced stress corrosion cracking (SCC) uye pitting. Kuwedzera kwe titanium kunosimbisa alloy kubva pakurwiswa kwe intergranular mushure mekusveta (zvakafanana ne stainless steels stainless). Nickel yakawanda (38-46%) inopa simba rakanaka kune chloride SCC, nepo chromium ne molybdenum zvichipa simba re pitting. Copper inowedzera simba kune sulfuric ne phosphoric acids.

Kuumbwa kweMakemikoro (Kuongororwa kweChirongo, % nehuremu):

Chinhu	UNS N08825 (ASTM B705)
C	≤ 0.050 (kazhinji ≤ 0.025)
Mn	≤ 1.00
P	≤ 0.030
S	≤ 0.030
Si	≤ 0.50
Cr	19.5 – 23.5
Ni	38.0 – 46.0
Mo	2.5 – 3.5
Cu	1.5 - 3.0
Ti	0.6 – 1.2
Al	≤ 0.20
Fe	Kuenzana

Zvimiro zveMichina (Kupisa Kwemukamuri, Mhinduro Yakanyungudutswa):

Pfuma	UNS N08825
Simba reGoho (min, 0.2% offset)	240 MPa (35,000 psi)
Simba reKusimba (miniti)	550 MPa (80,000 psi)
Kureba (min, 50mm geji)	30%
Kuoma (kwakajairika)	75-85 HRB

Zvimiro zvemuviri:

● Kuwanda: 8.14 g/cm³

● Modulus yeElasticity: 195 GPa (28.3 × 10⁶ psi)

● Kufambisa kwekupisa: 11.1 W/m·K pa100°C

● Kuwedzerwa kweThermal Coefficient: 14.0 × 10⁻⁶/°C (20-100°C)

Kuramba Kuora:

● Inodzivirira zvakanyanya sulfuric acid pahuwandu hwakasiyana-siyana (kusvika 96% pakupisa kuri pakati nepakati)

● Kuramba kwakanyanya kusingawirirane ne phosphoric acid (maitiro emvura) ine ma chloride ne fluorides

● Kuramba kwakanaka kune nitric acid uye organic acids

● Kudzivirira corrosion cracking zvakanaka (SCC)

● Kudzivirira ngura kubva pakukora kusvika pakukora uye pakutsemuka munzvimbo dzine chloride (PREN ≈ 30-35)

● Inodzivirira ngura yepakati pegranular mushure mekusveta (titanium yagadzikana)

● Yakakodzera kushandiswa kwesimba (NACE MR0175) kusvika kusimba rakawanda reH₂S

Miganhu Yekuora (Inenge):

● Sulfuric acid (H₂SO₄): inogona kushandiswa kusvika 96% kana tembiricha yemumba; inogumira pakufashaira

● Phosphoric acid (H₃PO₄): yakanaka kwazvo kusvika 80% pa100°C

● Hydrochloric acid (HCl): inongogumira pakunyungudutsa (< 5%) patembiricha yemumba

● Nitric acid (HNO₃): yakanaka kusvika ku40% patembiricha iri pakati nepakati

3. Kutevedzera Dimensional Range & Standards

Chinhu	Tsanangudzo
Zvakajairika	ASTM B705 / ASME SB-705 (pombi); ASTM B709 (pombi)
Maitiro Ekugadzira	ERW, EFW, LSAW
Dhayamita Yekunze	ERW: 6.35 - 610mm; EFW/LSAW: 219 - 1524mm
Ruvara rweMadziro	ERW: 0.5 - 12.7mm; EFW/LSAW: 4.0 – 50mm
Range yeRonga	5S, 10S, 40S, 80S (yeNPS 1/8″ – 48″)
Hurefu hwehurefu	Yakajairwa: 6m; Yakatambanudzwa: 12m, 18m, kusvika 18m (yakareba kana yakumbirwa)
Kupedzisa Kupedzisa	Mugumo Wakajeka (PE), Mugumo Wakatsemurwa (BE)
Kupedzisa Kwepamusoro	Yakanamirwa & Yakabikwa, Yakanamirwa Yakajeka
Kushivirira	OD: ±0.5% kana ±3.2mm; Huremu: ±12.5% (pa ASTM B775); Kureba: +50mm / -0mm

4. Zviyero & Magadzirirwo Anowanikwa - ASTM B705 UNS N08825 Welded Nickel Alloy Pipe (Saizi Dzakajairwa Dzakasarudzwa)

NPS	OD (mm)	Purogiramu	Huremu (mm)	Kurema (kg/m2)	Kureba Kwakajairwa	Kushandiswa Kwakajairika
1/2″	21.3	40S	2.77	1.27	6m	Jekiseni remakemikari
3/4″	26.7	40S	2.87	1.69	6m	Mitsetse yezviridzwa
1″	33.4	40S	3.38	2.50	6m	Mitsetse yekudyara asidhi
1-1/2″	48.3	40S	3.68	4.05	6m	Kugadzira mapaipi
2″	60.3	40S	3.91	5.44	6m / 12m	Asidhi yeSulfuric
3″	88.9	40S	5.49	11.3	6m / 12m	Asidhi yePhosphoric
4″	114.3	40S	6.02	16.1	6m / 12m	Mitsetse yeEvaporator
6″	168.3	40S	7.11	28.3	6m / 12m	Nzira yekubuda nayo muFGD
8″	219.1	40S	8.18	42.6	12m	Mutsetse wekunze kwegungwa
10″	273.0	40S	9.27	60.3	12m	Kugadzurwa kweasidhi
12″	323.9	40S	10.31	79.8	12m	Musoro mukuru weasidhi
16″	406.4	40S	12.70	123.4	12m	Kugadziriswazve kwenyukireya
20″	508.0	40S	15.09	183.5	12m	Dhayamita hombe
24″	609.6	40S	17.48	255.5	12m	Kushandiswa kwehunyanzvi

*Zviyero zvakagadzirwa kunze kwemhando idzi zviripo. Mapaipi eN08825 akasungirirwa anoda nguva yakareba yekupinza (mazuva mashoma makumi matanhatu) nekuda kwekushandiswa kwakakosha kwestrip/plate.*

5. Common Nickel Alloy Standards & Grades Yakagadzirwa neWomic Steel

Zvakajairika	Magiredhi eSimbi / Alloy	Kushandiswa Kwakajairika	Maitiro ekushongedza
ASTM B705	UNS N08825 (Incoloy 825)	Sulfuric, phosphoric acid	EFW/LSAW/ERW
ASTM B709	UNS N08825	Tubhu, chinochinja kupisa	ERW
ASTM B619	UNS N06022 (Hastelloy C-22), N10276 (C-276)	Zvinoparadza zvakanyanya	EFW/LSAW
ASTM B622	UNS N06022, N10276	Kuisa machubhu	ERW
ASTM B464	UNS N08020 (20 Alloy)	Asidhi yeSulfuric	EFW
ASTM B729	UNS N08020	Kuisa machubhu	ERW

Mashandisirwo:Zvivako zveasidhi (H₂SO₄, H₃PO₄, HNO₃), kugadzirazve nyukireya, basa rekunze kwemvura inonaka, FGD, ngarava dzemakemikari.

6. Maitiro Ekugadzira - Welded Nickel Alloy Pipe (ERW, EFW, LSAW)

Kubatanidza nickel alloy kunoda kungwarira kudzora kupisa uye kurapwa kwekupisa mushure mekusanganisa kuti ngura isarambe iripo. Alloy 825 yakagadzikana netitanium, asi kupisa kwakanyanya kunogona kukonzera kunzwa kana kupatsanurwa.

Maitiro eERW (Electric Resistance Welding) - Diki kusvika Pakati nepakati pedhayamita (6.35–610mm OD):

●Kuongorora Zvinhu Zvisina Kugadzirwa (Strip/Coil):Mutsetse weNickel alloy wakasimbiswa kuti une N08825 (Ni 38-46%, Cr 19.5-23.5%, Mo 2.5-3.5%, Cu 1.5-3.0%, Ti 0.6-1.2%). Coil yega yega ine nhamba yekupisa yakasiyana ine kurongeka kwakazara.

●Kusunungura & Kuenzanisa

●Kucheka Mipendero Yezvidimbu

●Kugadzira:Kuumbwa kwemupumburu nguva dzose.

●Kukwesha Kwemagetsi Kwakawanda:Kupisa kushoma (≤ 1.2 kJ/mm) kudzivirira kupatsanurwa. Kusundira mumhepo isina simba (argon shielding) kudzivirira oxidation.

●Kubatanidza Musono:Kupinza kwemhepo kunoteverwa nekutonhodza nekukurumidza.

●Kukura & Kururamisa

●Kucheka kusvika pakureba

●NDT:Kuongororwa kweEddy current (100%) + UT yekusarudza.

●Kunyungudutsa kwemhinduro (Paipi Yakazara):980-1040°C, kudzima mvura (kana kutonhora nekukurumidza kwemhepo). Zvinodiwa pakudzoreredza kuramba ngura.

●Kuedzwa kweHydrostatic

●Kusvina & Kunzwa Kunyara(uchishandisa musanganiswa weasidhi wakasarudzika we nickel alloys)

●Kutarisa kwePMI (XRF) neFerrite (hapana ferrite mu nickel alloy)

●Kuongorora Kwekupedzisira & Kumaka

Maitiro eEFW (Electric Fusion Welding) - Dhayamita Yakakura (219–1219mm OD, 4.0–50mm WT):

●Kugadzirira Ndiro:Ndiro yesimbi yenickel, mipendero yakatambanudzwa (X bevel).

●Kugadzira Roll

●Kukwevera Tack

●TIG (GTAW) Root Pass:Simbi yekuzadza inoenderana (ERNiCrMo-3 kana ERNiCrMo-10), gasi rinotsigira argon rine oxygen getter.

●Mapasi eSAW Fill & Cap:Kupisa kushoma (≤ 1.5 kJ/mm), tembiricha yepakati pemvura ≤ 150°C. Kuyerera kwakakosha kwe nickel alloys (sarufa yakaderera).

●Weld yemukati (yemadhayamita makuru)

●100% RT + UT(pamwe chete neASTM B775)

●Kugadziriswa kweMhinduro:Kurapa kupisa kwepombi zvizere (980-1040°C), chidzimiso chemvura.

●Kusvina & Kunzwa Kunyara

●Kuedzwa kweHydrostatic

●Kuongorora kwePMI & Dimensional

●Kumaka

Maitiro eLSAW eNickel Alloys – Dhayamita Yakakura Zvikuru (406–1524mm OD, 6.0–50mm WIT):

● UOE kana JCOE inoumbwa kubva mundiro ye nickel alloy

● Kushongedza kweSAW kwemativi maviri nekupisa kushoma

● Kugadzirisa zvizere mushure mekunamira

Zvinhu Zvakakosha Zvekudzora Kukwesha N08825:

● Kupinza kupisa: ≤ 1.5 kJ/mm (chinangwa ≤ 1.2 kJ/mm)

● Tembiricha yepakati pemapasi: ≤ 150°C

● Gasi rekudzivirira: Argon (100%) yeTIG; argon + helium yeSAW

● Kuchenesa: Kubvisa mafuta zvakanyanya usati wabatanidza (nickel alloys inonzwa sarufa nelead)

● Kunyungudutsa kwemvura: 980-1040°C, mvura inodzima – zvinosungirwa.

● Hapana ferrite musimbi ye weld (nickel alloy welds inongoshanda chete)

7. Maitiro Ekuongorora Hunhu uye Kuedza ASTM B705 UNS N08825 Welded Nickel Alloy Pipe

Danho	Nzira yekuongorora	Chinangwa
Zvinhu Zvisina Kugadzirwa	Kuongorora Makemikari (OES kana ICP)	Simbisa N08825 miganhu (Ni, Cr, Mo, Cu, Ti, Fe)
Zvinhu Zvisina Kugadzirwa	Kuedzwa kweTensile	Goho ≥ 240 MPa, Kusimba ≥ 550 MPa
Zvinhu Zvisina Kugadzirwa	Kuoma	75-85 HRB yakajairika
Zvinhu Zvisina Kugadzirwa	Kuedzwa kweKuora (ASTM G28)	Kudzivirira ngura pakati pegranular (yekubatsira kuchengetedza acid yakakosha)
Zviri Mukati	Kutarisa Kupinda Kwekupisa	≤ 1.5 kJ/mm
Zviri Mukati	Kupisa kwepakati pemapasi	≤ 150°C
Kusundira (ERW)	Eddy Current (100%)	Kuvimbika kweWeld
Weld (EFW/LSAW)	100% UT (kana PAUT)	Tarisa zvikanganiso zve weld
Weld (EFW/LSAW)	RT (10-100% pachiyero chimwe nechimwe)	Hunhu hwekunamira
Welding	Kudhaya Kunopinda Mukati (PT)	Matsemuka epamusoro
Mushure meKugadziriswa kweMhinduro	Kuedza Kuoma	Tarisa mamiriro ekugadzirisa annealed
Pombi Yapera	Kuedzwa kweHydrostatic	Kutendeseka kwekumanikidzwa
Pombi Yapera	PMI (XRF)	Simbisa giredhi (Ni, Cr, Mo)
Pombi Yapera	Kuedzwa kweKuora (ASTM G28 Practice A)	Kuramba kweIGC (kana zvataurwa)
Pombi Yapera	Kuonekwa & Kumaka	Kutevedzana

Miedzo yeSarudzo yeBasa Rakakosha:

● ASTM G28 Practice A (50% H₂SO₄ - ferric sulfate) yekudzivirira ngura pakati pegranular

● Kuedzwa kweASTM G48 pitting test (muFeCl₃, 6% pa40°C) kuti ionekwe kuti chloride pitting resistance iri kupi.

● Kuongororwa kweHIC/SSC kwekushandiswa kwemushonga usina simba (NACE TM0284, TM0177)

● Kuyedzwa kwekumanikidzwa kwekupisa kwakakwira (semuenzaniso, pa300°C)

● Kuyerwa kweFerrite (kunofanira kuva < 1% ye nickel alloys)

8. Mashandisirwo Ekutanga - ASTM B705 UNS N08825 Welded Nickel Alloy Pipe

●Zvirimwa zveSulfuric acid:Kubata oleum (H₂SO₄ + SO₃), acid yakawanda (96-98%), acid yakawanda (5-10%), uye mapombi anotonhorera ane acid. Inotsiva simbi dzisina ngura dzinokurumidza kuora.

●Kugadzirwa kwePhosphoric acid (maitiro ekunyorova):Zvinobvisa mvura, zvinotonhodza, uye zvinobata phosphoric acid nemachloride nefluoride. Alloy 825 inodzivirira mamiriro ekupisa nekuderedza oxidation.

●Kugadziriswazve kwemafuta enyukireya:Kubata mafuta enyukireya anoshandiswa akanyungudutswa mu nitric acid ne fluorides. N08825 inodzivirira ngura munzvimbo iyi ine hukasha hwakanyanya (inoshandiswa muMagnox neTHORP plants).

●Basa rekutengesa zvinhu zvisina kunaka kunze kwenyika:Kugadzirwa kwemafuta negasi zvine kumanikidzwa kwakanyanya kwechikamu cheH₂S (kusvika kumabhawa gumi) pamwe chete nemachloride akakwira uye tembiricha dzinosvika 200°C. NACE MR0175 yakapihwa hunyanzvi.

●Kutonhodza kwemvura yegungwa (tembiricha yakakwira):Masisitimu emvura anotonhorera munzvimbo dzinocheneswa mvura dziri pamhenderekedzo yegungwa uye munzvimbo dzinogadzira magetsi uko tembiricha yemvura yegungwa inodarika 45°C (uko 2205 uye kunyange super duplex inogona kudonha). N08825 inodzivirira kudonha kusvika 80°C.

●Mapaipi ekubuditsa mweya weFlue gas desulfurization (FGD):Pasi pema absorbers pane magasi ane acidic akawanda ane chloride yakawanda. Alloy 825 ndiyo yakajairika pakugadzira ma outlet ducts uye stack liners.

●Matangi emakemikari:Kuisa mapombi ekutakura zvinhu zvemakemikari anopisa anosanganisira sulfuric acid, phosphoric acid, uye organic acids. N08825 inotenderwa nemakambani makuru ekutakura zvinhu zvemakemikari.

●Miti yekuchera nekudzoreredza acid:Mitsetse yeHydrochloric acid (dilute) uye yakasanganiswa acid pickling yekugadzira simbi isina ngura.

●Kurapa kwemvura yakasviba:Marara emaindasitiri anoparadza zvakanyanya anobva mumiti yemakemikari (maacid akasanganiswa, simbi dzinorema, machloride).

9. Kurongedza & Kutumira - ASTM B705 UNS N08825 Welded Nickel Alloy Pipe

Kurongedza:

●Dziviriro yekudzivirira ngura:Kuputira nepurasitiki kana bepa reVCI. Pakushandisa mishonga, hapana mafuta anosara anotenderwa (kurongedza kwakachena).

●Zvivharo zvekupedzisira:Zvivharo zvepurasitiki zvinorema (zvine mavara - zvinowanzova orenji paN08825).

●Kubatanidza (Madhayamita madiki):Pombi yega yega inoputirwa yoga, yozobatanidzwa netambo dzisiri dzesimbi (dzivisa kubata tambo dzesimbi kudzivirira kusvibiswa).

●Kurongedza kwega kwega (Madhayamita makuru):Chiputiro chepurasitiki chine mhete dzefuro pakati pemapaipi.

●Mabhokisi emapurangapakushandiswa kwakakosha (nyukireya, mishonga).

Kutumira:

● Matangi e ≤ 610mm, akapatsanurwa kuti akwanise kufukidza dhayamita yakakura.

●Magwaro:MTC 3.1/3.2 (EN 10204), mushumo wekuyedza mvura, mishumo yeUT/RT, mushumo wePMI, mushumo wekuyedza ngura (ASTM G28 kana zvataurwa), mushumo wehukuru, runyorwa rwekurongedza, COO. Kutevedza kwakazara kubva panhamba yekupisa kusvika papombi yakapedzwa.

10. Mabhenefiti eSimbi yeWomic & Mibvunzo Inowanzo bvunzwa - ASTM B705 UNS N08825 Welded Nickel Alloy Pipe

Sei Uchifanira Kushanda Nesimbi yeWomic Steel paN08825 Welded Pipe?

● Hukuru Hwakazara: ERW 1/4″ – 24″, EFW/LSAW 8″ – 48″.

● Kunyungudutsa mvura yese mushure mekunamira (980-1040°C, mvura inodzima).

● Kuongororwa kwe corrosion pakati pe granular paASTM G28 kuripo (zvinosungirwa kuti acid ishandiswe).

● Chitupa cheNACE MR0175 chebasa rakasviba.

● Kudzora kwakasimba kwemhando - hapana ferrite musimbi yakasungirirwa.

● Nguva dzemakwikwi ekutungamira mapaipi e nickel alloy: mazuva 60-75 eERW, mazuva 75-90 eEFW.

Mibvunzo Inowanzo bvunzwa (Mibvunzo Inowanzo bvunzwa) - ASTM B705 UNS N08825 Welded Pipe

Mubvunzo: Chii chiri musiyano uripo pakati peIncoloy 825 (N08825) neAlloy 20 (N08020)?
A: Ose anoshandiswa pabasa re sulfuric acid. Alloy 20 (N08020) ine nickel yakaderera (32-38%) uye chromium yakakwira (19-21%) ine mhangura. N08825 ine nickel yakakwira (38-46%) uye molybdenum (2.5-3.5%) pamwe ne titanium stabilization. N08825 ine simba riri nani pa pitting uye chloride SCC uye yakakodzera basa re sour (H₂S). Alloy 20 inodhura zvishoma pa phosphoric acid uye inonyungudutsa sulfuric acid isina chloride. N08825 inowanzo tsanangurwa kuti ishandiswe pabasa re aggressive.

Mubvunzo: Ko N08825 inoramba sulfuric acid pahuwandu hwese here?
A: Kwete. N08825 yakanakira sulfuric acid inosvika 60% patembiricha inosvika 100°C, uye pahuwandu huri pakati pe85-96% patembiricha yemumba. Mukati mepakati (60-85%) uye patembiricha yakakwira, huwandu hwengura hunogona kunge hwakakwira. Kune H₂SO₄ (> 90%, > 150°C) ine tembiricha yakakwira, ma alloys akakosha seHastelloy C-276 anogona kudiwa. Nguva dzose tarisa machati engura kuti uwane mamiriro chaiwo.

Mubvunzo: Ko N08825 inoda kurapwa kwekupisa mushure mekuwelda mushure mekuwelda here?
A: Pamashandisirwo mazhinji, N08825 inogona kushandiswa mumamiriro ezvinhu akasungirirwa nekuti titanium stabilization inodzivirira kunzwa. Zvisinei, ASTM B705 inoda solution annealing (kupisa) ye welded pombi kuti isangane nehunyanzvi hwemakanika uye kuramba ngura. Womic inoita solution annealing pamapombi ese akasungirirwa. Pakusungirirwa mumunda, hapana PWHT inodiwa paN08825.

Mubvunzo: Ndeipi simbi yekuzadza welding inokurudzirwa paN08825?
A: AWS A5.14 ERNiCrMo-3 (Inconel 625) kana ERNiCrMo-10 (Inconel 622) dzinowanzoshandiswa pakushongedza N08825. Chinozadza chinoenderana nacho iERNiCrMo-3. Womic inoshandisa ERNiCrMo-3 pakuita EFW. Pakushongedza mumunda, chifukidzo chimwe chete chinokurudzirwa.

Mubvunzo: N08825 inogona kushandiswa pabasa remvura yegungwa here?
A: Ehe. N08825 inodzivirira ngura nekuora mumvura yegungwa, kunyangwe pakupisa kwakanyanya (kusvika 80°C). Inowanzo sarudzwa kuti ishandiswe mumidziyo yekutonhodza mvura yegungwa munzvimbo dzinocheneswa mvura nemagetsi egungwa uko super duplex (2205) inogona kukanganiswa nekuoma pakupisa kwakanyanya. Zvisinei, pakushandiswa kwakawanda kwemvura yegungwa, duplex kana super duplex yakakwana uye inodhura zvishoma. N08825 inowanzo chengeterwa masisitimu emvura yegungwa ane mamwe makemikari anoparadza (semuenzaniso, mvura yegungwa ine chlorine, kusvibiswa neasidhi).

Mubvunzo: N08825 yakakodzera kushandiswa sevhisi yesour (H₂S) here?
A: Ehe. N08825 inokodzera zvichienderana neNACE MR0175/ISO 15156 pakushandiswa kwemvura ine H₂S pressures kusvika pabhaa imwe (15 psi) zvichikwira, zvichienderana nekudzora kuomarara. Inowanzo shandiswa pakuisa machubhu emugodhi, nzira dzinoyerera, uye mapaipi ekugadzira muminda yemafuta negesi ine 2205 duplex isina kukwana nekuda kweH₂S yakakwira kana machloride.

Q: Ndeipi nguva yakajairika yekuendesa pombi yeUNS N08825 yakasungirirwa?
A: Mazuva 60-75 eERW (dhayamita diki kusvika pakati), mazuva 75-90 eEFW/LSAW (dhayamita hombe). Nguva dzeLead dzakareba kupfuura dzesimbi dzisina ngura nekuti alloy strip/plate inogadzirwa muhuwandu hudiki nenguva refu dzelead dzemugayo. Kuongorora kwechitatu kunowedzera mazuva 7-14. Maodha ekumhanyisa (mazuva 45-60) anogona kugoneka kune saizi dzakajairwa kana zvinhu zviripo.

Mubvunzo: Ndeipi tembiricha yepamusoro yekushanda yeN08825?
A: N08825 inogona kushandiswa mukushanda nguva dzose kusvika ku550°C (1020°F) munzvimbo dzisina acid. Pabasa rekupisa, tembiricha yepamusoro inoganhurirwa ne corrodent. Mu sulfuric acid, basa rinowanzo ganhurira kusvika ku <100°C; mu phosphoric acid kusvika ku <150°C. Pabasa rekupisa kwakanyanya, alloys dzine chromium yakakwira (seAlloy 600, 601, kana 625) dzinokurudzirwa.

Chirevo chePurojekiti - North American Sulfuric Acid Plant Reboiler uye Kutsiva Mapaipi

Nyika:Nyika dzakabatana (Louisiana, Gulf Coast chemical corridor)
Standard & Giredhi:ASTM B705 UNS N08825 (Incoloy 825)
Zviyero & Huwandu:

● OD 219.1mm (8″) × Purogiramu 40S (8.18mm WIT) – 600 metres (anenge matani makumi maviri) – Maitiro eEFW

● OD 168.3mm (6″) × Purogiramu 40S (7.11mm WIT) – 400 metres (anenge matani gumi) – Maitiro eEFW

● OD 88.9mm (3″) × Purogiramu 40S (5.49mm WT) – 800 metres (anenge matani 8) – Maitiro eERW

● OD 60.3mm (2″) × Purogiramu 80S (5.54mm WT) – mamita 1,000 (anenge matani 6) – Maitiro eERW
Huwandu:Mamita 2,800, anenge matani 44

Magadzirirwo:ASTM B705 UNS N08825 mhinduro yakanyungudutswa uye yakakangwa, yakachekwa. Kuyedzwa kwemvura. 100% UT yemapombi eEFW, eddy current + UT yeERW. PMI papombi yega yega. Kuyedzwa kwekuora kwepakati pegranular zvichienderana neASTM G28 Practice A (nzira yeferric sulfate-sulfuric acid) - mwero wekuora < 10 mpy (mil pagore). Kuyedzwa kwekudzivirira kwehydrofluoric acid (kune mutengi). Kuongororwa kwechitatu neSGS USA.

Kushandiswa:Kutsiva mapombi ekugadzirisa acid uye mitsetse yekushanda yakabatana muchirimwa chekugadzirisa sulfuric acid. Chirimwa ichi chinotora sulfuric acid yakapedzwa kubva muzvigadziko zvealkylation (refinery) nekuora kwekupisa uye kugadzirisa patsva. Mapombi aya anobata hot sulfuric acid (85-95% H₂SO₄) pa150-200°C muchikamu chekugadzirisa, uye dilute acid (5-10% H₂SO₄) pa80-100°C muchikamu chekudzima. Mapombi eAlloy 20 (N08020) akakundikana mushure memakore mana nekuda kwekutumbuka uye kutsemuka kwepakati pegranular. N08825 yakasarudzwa nekuda kwekudzivirira kwayo zvakanyanya kune ese ari maviri akaomeswa uye akaomeswa, pamwe nekusimbisa kwayo titanium.

Matambudziko ehunyanzvi nemhinduro:

●Asidhi yesulfuric yakakamurwa zvakanyanya inodziya zvakanyanya (85-95%, 150-200°C)– Alloy 20 inoora pamitengo inopfuura 50 mpy pasi pemamiriro aya. N08825 ine mhinduro yakanyungudutswa uye simbi chaiyo yakapa mwero wekuora < 5 mpy mukuyedzwa kweASTM G28 uye mumhinduro yemutengi yakaedzwa (85% H₂SO₄ pa180°C, maawa 336). Womic yakapa mishumo yekuyedzwa kwemugayo uye makuponi ekuyedzwa kwekuora.

●Njodzi yekuora pakati pegranular mushure mekunamira– Kunyangwe N08825 yakagadzikana netitanium, kupisa kusina kunaka panguva yekugadzira kunogona kukonzera kunaya kwe chromium carbide pamiganhu yezviyo. Kupisa kwakadzorwa neWomic kwakaitwa kusvika ≤ 1.2 kJ/mm uye kwakaitwa full solution annealing mushure mekuwelda. Kuedza kweASTM G28 pasampuli dzeweld kwakaratidza kuti corrosion rate yaive 4-7 mpy (pasi pe10 mpy limit).

●Kufanirwa kwenzira yekushongedza munda– Chikwata chekugadzirisa mafekitori chaifanira kugadzirisa munda. Womic yakapa makuponi makumi maviri eweld e6″ Schedule 40S ane WPS inokurudzirwa: GTAW ine ERNiCrMo-3 filler, 100% argon backing, interpass ≤ 150°C. Makuponi akapa bvunzo dzeX-ray, PT, uye ASTM G28. Chikwata chewelding chemutengi chakasimbisa maitiro acho.

●Kusimbiswa kwePMI - kusiyanisa N08825 kubva ku alloys dzakaderera– Panjodzi yekusanganisa N08825 neAlloy 825 (UNS imwe chete) vs Alloy 625 (zvakasiyana). Womic yakaita XRF papombi yega yega uye yakanyora zita rekuti imwe neimwe ine mavara (orenji ye825). Hapana kusanganiswa kwakaitika.

●Kugadziriswa kwezvinhu panguva yekugadziriswa kwakarongwa (kuvharwa kwemavhiki mana)– Mapaipi akatumirwa kubva kuShanghai kuenda kuNew Orleans, ndokuzoendeswa nemotokari kunzvimbo yeLouisiana. Matani ese makumi mana nemana akaendeswa mazuva gumi vasati vatanga kugadzira. Womic yakapa zvitupa zvechigayo (EN 10204 Type 3.2) uye mishumo yekuyedzwa kwekuora pachine nguva kuti mutengi abvumire QA.

Mhedzisiro:Chigayo chekugadzirisa acid chakatangwazve zvinobudirira mushure mekushanda kwemwedzi gumi nemiviri, kuongororwa kweN08825 piping hakuna kuratidza ngura inoyerwa, kutsemuka, uye kurwiswa pakati pemagranular. Mutengi akafungidzira kuti mapiping matsva aya achagara kwemakore anopfuura gumi nemashanu (zvichienzaniswa nemakore mana eAlloy 20). Womic Steel yakawedzerwa pane runyorwa rwezvinhu zvakatenderwa nefekitari kuti zvitsiviwe mune ramangwana.

Bata nesu:
Webhusaiti: www.womicsteel.com
E-mail: sales@womicsteel.com

Nhare / WhatsApp / WeChat:
Victor: +86 15575100681
Jack: +86 18390957568

Simbi yeWomic – Mubatsiri wako wakavimbika weASTM B705 UNS N08825 welded nickel alloy pombi dze sulfuric ne phosphoric acid, nuclear reprocessing, offshore sour service, uye mashandisirwo emvura yegungwa inopisa zvakanyanya pasi rese.