Cov raj xa dej tsis muaj hlau rau lub boiler yog ib hom raj xa dej boiler, uas yog ib feem ntawm cov raj xa dej tsis muaj hlau. Txoj kev tsim khoom zoo ib yam li cov raj xa dej tsis muaj hlau, tab sis muaj cov kev cai nruj rau cov hlau siv hauv kev tsim cov raj xa dej. Lub boiler nrog cov raj xa dej tsis muaj hlau feem ntau siv rau hauv qhov kub thiab txias siab, cov kav dej hauv cov pa roj kub thiab cov pa dej nyob rau hauv qhov kev ua haujlwm, yuav tshwm sim oxidation thiab corrosion. Cov raj xa dej hlau yuav tsum muaj lub zog ruaj khov siab, tiv taus oxidation corrosion siab, thiab cov ntaub so ntswg zoo ruaj khov. Lub boiler nrog cov raj xa dej tsis muaj hlau feem ntau yog siv los tsim cov raj xa dej siab siab thiab siab heev boiler superheater, raj xa dej rov ua kom sov, roj coj boiler nrog cov raj xa dej tsis muaj hlau, cov raj xa dej loj, thiab lwm yam.

Lub raj xa dej boiler qis thiab nruab nrabGB3087-1999, boiler seamless rajGB5310-1999yog siv los tsim ntau yam qauv ntawm cov kav dej kub boiler qis siab, kav dej npau thiab cov kav dej kub boiler locomotive, kav dej haus luam yeeb, kav dej haus luam yeeb me me thiab cov kav dej cib ntsa ntawm cov hlau zoo carbon cov qauv hlau kub dov thiab txias kos (dov) seamless steel yeeb nkab. Seamless steel raj rau cov qauv (GB/T8162-1999) yog ib lub raj hlau tsis muaj seamless rau cov qauv dav dav thiab cov qauv kho tshuab. Cov lus qhia thiab qhov zoo li cas:GB5310-95"Tub hlau tsis muaj qhov sib txuas rau lub boiler siab siab" cov yeeb nkab kub dov txoj kab uas hla 22 ~ 530mm, phab ntsa tuab 20 ~ 70mm. Lub txoj kab uas hla sab nraud ntawm cov yeeb nkab txias rub (kub dov) yog 10 ~ 108mm, thiab phab ntsa tuab yog 2.0 ~ 13.0mm. Cov yeeb nkab hlau tsis muaj qhov sib txuas tshwj xeeb yog lo lus dav dav rau cov yeeb nkab hlau tsis muaj qhov sib txuas ntawm lwm cov duab hla tshwj tsis yog cov yeeb nkab puag ncig. Raws li cov duab sib txawv thiab qhov loj ntawm cov yeeb nkab hlau, nws tuaj yeem muab faib ua cov yeeb nkab hlau tsis muaj qhov sib npaug ntawm phab ntsa tuab (code rau D), cov yeeb nkab hlau tsis muaj qhov sib npaug ntawm phab ntsa tuab (code rau BD), cov yeeb nkab hlau tsis muaj qhov sib txawv ntawm txoj kab uas hla (code rau BJ). Cov yeeb nkab hlau tsis muaj qhov sib txuas tshwj xeeb yog siv dav hauv ntau yam khoom siv, cov cuab yeej thiab cov khoom siv kho tshuab. Piv nrog rau cov yeeb nkab puag ncig, cov yeeb nkab tshwj xeeb feem ntau muaj lub sijhawm loj dua ntawm inertia thiab ntu modulus, thiab muaj peev xwm tiv taus kev khoov thiab torsion ntau dua, uas tuaj yeem txo qhov hnyav ntawm cov qauv thiab txuag hlau. 4. Kev sim tshuaj lom neeg sib xyaw (1)GB3087-82Cov kev cai ntawm "seamless steel tube rau lub boiler siab qis thiab nruab nrab". Txoj kev sim tshuaj lom neeg raws li GB222-84 thiab GB223 "Steel thiab Alloy Chemical Analysis Method" qhov tseem ceeb. (2)GB5310-95Cov kev cai ntawm "Seamless Steel Tube rau High pressure boiler". Txoj kev sim tshuaj lom neeg yog raws li cov khoom tseem ceeb ntawm GB222-84, Txoj Kev Tshawb Fawb Tshuaj Lom Zem ntawm Hlau thiab Alloy, thiab GB223 Txoj Kev Tshawb Fawb Tshuaj Lom Zem ntawm Hlau thiab Alloy. (3) Kev tshuaj xyuas tshuaj lom neeg ntawm cov raj xa dej boiler uas xa tuaj yuav tsum tau ua raws li cov qauv tseem ceeb uas tau teev tseg hauv daim ntawv cog lus. 5 boiler nrog cov raj xa dej seamless (1) cov hlau zoo carbon yog 20G, 20MnG, 25MnG. (2) cov hlau alloy yog 15MoG, 20MoG, 12CrMoG, 15CrMoG, 12Cr2MoG12CrMoVG, 12Cr3MoVSiTiB thiab lwm yam. (3) cov hlau tiv taus kub xeb feem ntau siv 1Cr18Ni9, 1Cr18Ni11Nb boiler raj ntxiv rau kom ntseeg tau tias muaj cov tshuaj lom neeg thiab cov khoom siv kho tshuab, los ua qhov kev sim hydraulic los ntawm cov hauv paus, los ua qhov kev sim flaring, flattening. Cov raj xa dej raug xa mus rau hauv lub xeev kho cua sov. Tsis tas li ntawd xwb, qhov microstructure, qhov loj ntawm cov noob thiab cov txheej decarbonization ntawm cov yeeb nkab hlau tiav lawm kuj tseem xav tau.

6. Kev ntsuam xyuas kev ua tau zoo ntawm lub cev (1) GB3087-82 "Seamless steel tube rau boiler siab qis thiab nruab nrab"cov kev cai. Kev sim tensile raws li GB / T228-87, kev sim hydraulic raws li GB / T241-90, kev sim squashing raws li GB / T246-97, kev sim flaring raws li GB / T242-97, kev sim khoov txias raws li GB24497 (2) GB5310-95"Seamless Steel Tube rau High pressure boiler"cov kev cai. Kev xeem tensile, kev xeem hydrostatic thiab kev xeem flattening yog tib yam li GB3087-82; Kev xeem cuam tshuam raws li GB229-94, kev xeem flaring raws li GB/T242-97, kev xeem loj ntawm cov noob raws li YB/T5148-93; Raws li GB13298-91 rau kev kuaj cov ntaub so ntswg microscopic, GB224-87 rau kev kuaj txheej decarbonized, thiab raws li GB224-87 rau kev kuaj ultrasonic GB/T5777-96. (3) Kev tshuaj xyuas kev ua tau zoo ntawm lub cev thiab cov ntsuas ntawm cov raj xa dej boiler uas xa tuaj yuav tsum tau ua raws li cov qauv tsim nyog uas tau teev tseg hauv daim ntawv cog lus.

7. Qhov xwm txheej tseem ceeb ntawm kev xa khoom tuaj thiab xa tawm

(1) Cov yeeb nkab seamless siab boiler uas yog cov teb chaws tseem ceeb uas xa tawm yog Nyiv Pooj, Lub Tebchaws Yelemees. Feem ntau cov lus qhia ntawm 15914.2 hli; 2734.0 hli; 219.110.0 hli; 41975 hli; 406.460 hli, thiab lwm yam. Cov lus qhia tsawg kawg nkaus yog 31.84.5 hli, ntev feem ntau yog 5 ~ 8 m. (2) nyob rau hauv cov ntaub ntawv ntawm kev thov xa tawm, Lub Tebchaws Yelemees mannesmann seamless boiler raj, yeeb nkab zeb xa tawm ST45 los ntawm kev kuaj ultrasonic ntawm kev suav pej xeem, pom tias muaj ob peb qhov tsis zoo sab hauv ntawm cov yeeb nkab hlau ntau dua li cov cai ntawm lub Hoobkas thiab cov qauv ntawm German steel association. (3) los ntawm Lub Tebchaws Yelemees xa tawm cov yeeb nkab hlau alloy, qib hlau yog 34 crmo4 thiab 12 crmov, thiab lwm yam. Hom yeeb nkab hlau no ua haujlwm kub siab zoo, feem ntau siv rau cov yeeb nkab hlau boiler kub siab. (4) Cov yeeb nkab hlau alloy xa tawm los ntawm Nyiv Pooj, cov lus qhia mm5 426.012 ~ 8 m; 152.48.0 mm12m; 89.110.0 mm6m; 101.610.0 mm12m; 114.38.0 mm6m; 127.08.0 mm9m JISG3458 kev siv tus qauv kev lag luam Nyij Pooj, xws li qib hlau rau STPA25, hom yeeb nkab hlau no siv rau kev sib phim nrog cov raj kub siab alloy. Kev xa tawm thiab xa tawm ntawm cov raj kub siab boiler seamless, (1) cov raj kub siab boiler seamless loj yog Nyiv Pooj, Lub Tebchaws Yelemees. Feem ntau cov lus qhia ntawm 15914.2 mm; 2734.0 mm; 219.110.0 mm; 41975mm; 406.460 hli yog qhov tsawg tshaj plaws xws li 31.84.5 hli, ntev feem ntau yog 5 ~ 8 m. (2) nyob rau hauv cov ntaub ntawv ntawm qhov kev thov xa tuaj, Lub Tebchaws Yelemees mannesmann seamless boiler raj, yeeb nkab zeb xa tuaj ST45 los ntawm kev kuaj ultrasonic ntawm kev suav pej xeem, pom tias muaj ob peb qhov tsis zoo sab hauv ntawm cov yeeb nkab hlau ntau dua li cov cai ntawm lub Hoobkas thiab German steel association standards. (3) los ntawm Lub Tebchaws Yelemees xa tawm alloy steel yeeb nkab, steel qib yog 34 crmo4 thiab 12 crmov, thiab lwm yam. Hom yeeb nkab hlau no kub siab ua tau zoo, feem ntau siv rau kub siab boiler steel yeeb nkab. (4) alloy raj xa tuaj ntawm Nyiv Pooj ntau dua, specifications mm5 426.012 ~ 8 m; 152.48.0 mm12m; 89.110.0 mm6m; 101.610.0 mm12m; 114.38.0 mm6m; 127.08.0 mm9m JISG3458 kev siv tus qauv kev lag luam Nyij Pooj, xws li qib hlau rau STPA25. Hom yeeb nkab hlau no siv rau kev sib phim nrog cov yeeb nkab kub siab.

Cov txheej txheem tsim cov raj xa dej tsis muaj qhov txuas Lub boiler muaj ib hom raj xa dej tsis muaj qhov txuas. Cov txheej txheem tsim khoom thiab cov raj xa dej tsis muaj qhov txuas zoo ib yam, tab sis muaj kev thov nruj rau kev tsim cov hlau siv rau hauv cov yeeb nkab hlau. Raws li kev siv qhov kub thiab txias tuaj yeem muab faib ua ob lub raj xa dej dav dav thiab lub raj xa dej siab siab.1, kev piav qhia txog (1) txoj kev tsim khoom: (1) cov raj xa dej tsis muaj qhov txuas dav dav kub hauv qab 450 ℃, cov yeeb nkab hauv tsev feem ntau siv 10, 20 carbon hlau kub dov lossis txias kos raj tsim. (2) cov raj xa dej siab siab boiler feem ntau nyob rau hauv qhov kub thiab txias siab, thaum siv cov yeeb nkab nyob rau hauv qhov kev ua ntawm cov pa roj flue kub thiab cov pa dej, oxidation thiab corrosion yuav tshwm sim. Cov kev xav tau ntawm cov yeeb nkab hlau uas muaj lub zog tawg siab, tiv taus kev xeb oxidation siab, thiab muaj kev ruaj khov zoo. (2) siv: (1) cov raj boiler seamless feem ntau yog siv los ua cov kav dej phab ntsa, cov yeeb nkab dej, cov raj superheated steam, cov yeeb nkab locomotive boiler superheated steam, cov yeeb nkab loj thiab me thiab cov yeeb nkab arch cib, thiab lwm yam. (2) cov raj siab boiler seamless feem ntau yog siv los tsim cov raj siab thiab siab ultrahigh-pressure boiler superheater, cov raj rov ua kom sov, cov yeeb nkab pa loj, thiab lwm yam.

Kev siv cov raj xa dej boiler seamless

(1) cov raj xa dej boiler dav dav feem ntau yog siv los ua cov raj xa dej phab ntsa, cov yeeb nkab dej, cov raj xa dej kub heev, cov yeeb nkab kub heev, cov yeeb nkab loj thiab me thiab cov raj arch cib, thiab lwm yam. (2) cov raj xa dej siab siab boiler seamless feem ntau yog siv los tsim cov raj xa dej kub siab thiab ultrahigh-pressure boiler superheater, cov raj xa dej rov ua kom sov, cov yeeb nkab pa dej loj, thiab lwm yam. (3) GB3087-82 cov raj xa dej kub nruab nrab qis thiab GB5310-95 "cov raj xa dej kub siab boiler seamless steel". Qhov zoo ntawm cov yeeb nkab: cov raj xa dej sab hauv thiab sab nraud tsis pub muaj qhov tawg, folding, folding, scarring, delamination thiab hairline. Cov qhov tsis zoo no yuav tsum raug tshem tawm tag nrho. Tshem tawm qhov tsis zoo, qhov tob yuav tsum tsis pub tshaj qhov tuab ntawm phab ntsa nominal qhov kev ntxuav hauv qhov tuab ntawm phab ntsa tiag tiag yuav tsum tsis pub tsawg dua qhov tsawg kawg nkaus ntawm qhov tuab ntawm phab ntsa. Txoj kev xam qhov hnyav ntawm cov raj xa dej kub seamless txoj kev xav: - phab ntsa tuab (txoj kab uas hla) * 0.02466 * phab ntsa tuab.