Mtengo wokwanira wa China Ductile Seamless Cast Iron Steel Boiler Tube Price Black Iron Pipe
Mwachidule
Kudalilika kwapamwamba komanso kuyika bwino pangongole ndi mfundo zathu, zomwe zingatithandize paudindo wapamwamba. Kutsatira mfundo za "ubwino woyamba, wogula wamkulu" wa Boiler Pipe, Tidatsimikizira zamtundu wabwino, ngati ogula sakusangalala ndi zinthu zapamwamba kwambiri, mutha kubwerera mkati mwa 7days ndi mayiko awo oyamba. Tikukhulupirira kuti ubale wabwino wamabizinesi udzabweretsa phindu limodzi ndikusintha kwa onse awiri. Tsopano takhazikitsa maubale ogwirizana anthawi yayitali komanso opambana ndi makasitomala ambiri kudzera mu chidaliro chawo pazantchito zathu zokhazikika komanso kukhulupirika pochita bizinesi. Timakhalanso ndi mbiri yabwino chifukwa cha ntchito zathu zabwino. Kuchita bwino kumayembekezeredwa ngati mfundo yathu yachilungamo. Kudzipereka ndi Kukhazikika zidzakhalabe monga kale.
Chitoliro cha boiler zonse zimafunikira NDT kuwonetsetsa kuti palibe vuto lomwe lingabweretse ngozi. NDT imaphatikizapo njira zambiri zoyesera, momwemo, Ultrosonic, X-Ray, Eddy Current ndi Magnetic Flux Leakage imagwiritsidwa ntchito kwambiri, ngakhale onse amagwiritsidwa ntchito poyang'ana zolakwika monga maenje, pores, inclusions, ming'alu, koma ali ndi mwayi wosiyana. zomwe zimayenera kuyesa zolakwika zosiyanasiyana:
Zotsatira za Ultrasonic
Oyenera zinthu zambiri zosiyanasiyana; kukhala ndi mwayi kuyesa zolakwika zamkati monga kusaphatikizika, ming'alu, delamination, kuchuluka kwa kuzindikira ndikokwera; ali ndi mphamvu yolowera kwambiri, angagwiritsidwe ntchito kuti azindikire zolakwika zamkati za zitsanzo mumtundu wokulirapo; malo achilema ndi olondola; kukhudzika kwakukulu, kumatha kuzindikira zolakwika zazing'ono zazing'ono mkati mwa fanizo; mtengo wotsika, liwiro lachangu, zida zopepuka, zopanda vuto kwa thupi la munthu ndi chilengedwe, zosavuta kugwiritsa ntchito pamalowo
Koma n'kovuta kusanthula molondola Mkhalidwe ndi kachulukidwe za zolakwika mu zitsanzo; zovuta kuzindikira chitsanzocho ndi mawonekedwe ovuta kapena mawonekedwe osakhazikika; malo, malo ndi mawonekedwe a chilema zimakhala ndi mphamvu zina pa zotsatira zodziwika; zinthu ndi kukula kwa tirigu zimakhudza kwambiri kuzindikira; zotsatira zake sizowoneka bwino ndipo palibe umboni wachindunji wa zotsatira za mayeso pamene buku la A-type pulse reflection njira ikugwiritsidwa ntchito
X-ray
Mofanana ndi ultrosonic, onsewa amagwiritsidwa ntchito poyang'ana zolakwika zamkati, X-ray imagwiritsidwa ntchito poyang'ana msoko wowotcherera ndi mankhwala oponyedwa, makamaka weld seam, amatha kuzindikira zolakwika za voliyumu monga porosity, slag inclusion and porosity, koma ndizovuta. kuzindikira zolakwika za m'deralo monga delamination ndi crack. X-ray ikhoza kuyang'ana mwachindunji kukula, malo ndi chikhalidwe cha chilemacho, koma sichikhudzidwa ndi vuto la dera, ndipo kulondola kwa chidziwitso kudzachepetsedwa ngati mawonekedwe a chilema ndi mbali ya ray si yoyenera ngakhale zosatheka kuzizindikira, ndi mtengo wake ndi wokwera, ntchitoyo ndi yovuta
Eddy Current
Eddy Current ndi Magnetic Flux Leakage onse alibe zambiri zokhudzana ndi mtundu wa surfact, ndipo chizindikiro chodziwika ndi chizindikiro chamagetsi, chomwe chimatha kusinthidwa ndi digito kuti chithandizire kusungirako, kubereka ndi kufananitsa ndi kukonza. Ili ndi chidziwitso chapamwamba chodziwikiratu komanso chisonyezero chabwino cha mzere mumtundu wina wa zolakwika kapena pafupi ndi pamwamba pa workpiece, zomwe zingagwiritsidwe ntchito poyang'anira khalidwe ndi kuwongolera; akhoza kuyesedwa pa kutentha kwakukulu, malo opapatiza a workpiece ndi khoma lakuya (kuphatikizapo khoma la chubu); zinthu zopanda zitsulo zomwe zingayambitse mafunde a eddy zimatha kuyesedwa, monga graphite; pa kudziwika, koyilo sayenera kulankhula workpiece kapena lumikiza sing'anga, kotero liwiro kudziwika ndi mofulumira.
Koma phunziroli liyenera kukhala lochititsa chidwi ndipo ndiloyenera kuzindikira zowonongeka zazitsulo; kuya kwa kuzindikira ndi kuzindikira kukhudzidwa kumatsutsana. Pochita ET pazinthu, ndikofunikira kulingalira mozama molingana ndi zinthu, mawonekedwe apamwamba komanso mulingo wowunikira, kenako ndikuwunika njira yodziwira ndi magawo aukadaulo; pamene kupyola-coil kumagwiritsidwa ntchito kwa ET, malo enieni pa circumference ya chilema sichingadziwike; zovuta kuzindikira zitsanzo zokhala ndi mawonekedwe ovuta
Kutuluka kwa Magnetic Flux
Mofanana ndi Eddy Current, mulibe kubwereza zambiri za khalidwe la surfact, ndipo chizindikiro chodziwika ndi chizindikiro chamagetsi, chomwe chimatha kusinthidwa ndi digito kuti chithandizire kusungirako, kubereka ndi kufananitsa deta ndi kukonza. Koyamba quantification ya zolakwika akhoza achieved.This quantization sangathe kuzindikira chiweruzo cha zolakwika, komanso kupanga kuwunika koyambirira kwa mlingo wa kuipa kwa zolakwika; kwa mapaipi okhala ndi khoma la makulidwe osakwana 30mm, amatha kuzindikira zolakwika mkati ndi kunja kwa khoma; chifukwa ndikosavuta kukhala ndi makina, kuzindikira kwakukulu komanso palibe kuipitsidwa komwe kungapezeke
Koma zimangogwira ntchito kuzinthu za ferromagnetic.Chifukwa chakuti maginito ndi gawo loyamba la kutulukira kwa maginito, kutsekemera kwa zinthu zopanda ferromagnetic kuli pafupi ndi 1, ndipo mphamvu ya maginito yozungulira chilema sichidzasintha chifukwa cha permeability yosiyana, kotero kutayikira kwa maginito. sizidzachitika; kunena mosamalitsa, kuyezetsa kwa maginito kutayikira sikungathe kuzindikira zolakwika mu ferromagnetic materials.Ngati mtunda pakati pa chilema ndi pamwamba ndi waukulu, kupotoza kwa maginito kuzungulira chilema kumawonekera mozungulira chilema, pamene workpiece pamwamba sangakhale ndi maginito kutayikira.; kuyezetsa kutayikira kwa maginito sikoyenera kuyesa zitsanzo zokhala ndi zokutira kapena zokutira; Kuzindikira kwa maginito kutayikira kwa maginito sikoyenera kwa chitsanzo chokhala ndi mawonekedwe ovuta.Kuzindikira kutayikira kwa maginito kumagwiritsa ntchito masensa kuti asonkhanitse maginito olumikizana ndi maginito, ndipo mawonekedwe ovuta pang'ono sangawonekere; kutulukira kwa maginito kutayikira sikoyenera kuzindikira ming'alu yopapatiza, makamaka ming'alu yotsekedwa.
Kugwiritsa ntchito
Amagwiritsidwa ntchito kwambiri popanga zitsulo zapamwamba kwambiri za carbon structural steel, alloy structural chitsulo ndi mapaipi achitsulo osatentha osagwira kutentha osasunthika kuti azitha kuthamanga kwambiri komanso mapaipi otenthetsera pamwamba.
Amagwiritsidwa ntchito kwambiri pakuthamanga kwambiri komanso kutentha kwambiri kwa boiler (chubu chapamwamba chotenthetsera, chubu chotenthetsera, chubu chowongolera mpweya, chubu chachikulu cha nthunzi yama boiler okwera komanso okwera kwambiri). Pansi pa kutentha kwa mpweya wa flue ndi mpweya wa madzi, chubucho chidzasungunuka ndi kuwononga. Ndikofunikira kuti chitoliro chachitsulo chikhale chokhazikika kwambiri, kukana kwambiri makutidwe ndi okosijeni ndi dzimbiri, komanso kukhazikika kwadongosolo.
Main Grade
Kalasi apamwamba mpweya structural zitsulo: 20g, 20mng, 25mng
Kalasi ya aloyi structural zitsulo: 15mog, 20mog, 12crmog, 15crmog, 12cr2mog, 12crmovg, 12cr3movsitib, etc.
Gulu lachitsulo chosagwira kutentha: 1cr18ni9 1cr18ni11nb
Chigawo cha Chemical
Gulu | Ubwino Kalasi | Chemical Property | ||||||||||||||
C | Si | Mn | P | S | Nb | V | Ti | Cr | Ni | Cu | Nd | Mo | B | Als" | ||
不大于 | 不小于 | |||||||||||||||
Q345 | A | 0.20 | 0.50 | 1.70 | 0.035 | 0.035 | 0.30 | 0.50 | 0.20 | 0.012 | 0.10 | - | - | |||
B | 0.035 | 0.035 | ||||||||||||||
C | 0.030 | 0.030 | 0.07 | 0.15 | 0.20 | 0.015 | ||||||||||
D | 0.18 | 0.030 | 0.025 | |||||||||||||
E | 0.025 | 0.020 | ||||||||||||||
Q390 | A | 0.20 | 0.50 | 1.70 | 0.035 | 0.035 | 0.07 | 0.20 | 0.20 | 0.3 ku. | 0.50 | 0.20 | 0.015 | 0.10 | - | - |
B | 0.035 | 0.035 | ||||||||||||||
C | 0.030 | 0.030 | 0,015 | |||||||||||||
D | 0.030 | 0.025 | ||||||||||||||
E | 0.025 | 0.020 | ||||||||||||||
Q42O | A | 0.20 | 0.50 | 1.70 | 0.035 | 0.035 | 0.07 | 0.2 ku. | 0.20 | 0.30 | 0.80 | 0.20 | 0.015 | 0.20 | - | - |
B | 0.035 | 0.035 | ||||||||||||||
C | 0.030 | 0.030 | 0.015 | |||||||||||||
D | 0.030 | 0.025 | ||||||||||||||
E | 0.025 | 0.020 | ||||||||||||||
Q46O | C | 0.20 | 0.60 | 1.80 | 0.030 | 0.030 | 0.11 | 0.20 | 0.20 | 0.30 | 0.80 | 0.20 | 0.015 | 0.20 | 0.005 | 0.015 |
D | 0.030 | 0.025 | ||||||||||||||
E | 0.025 | 0.020 | ||||||||||||||
Q500 | C | 0.18 | 0.60 | 1.80 | 0.025 | 0.020 | 0.11 | 0.20 | 0.20 | 0.60 | 0.80 | 0.20 | 0.015 | 0.20 | 0.005 | 0.015 |
D | 0.025 | 0.015 | ||||||||||||||
E | 0.020 | 0.010 | ||||||||||||||
Q550 | C | 0.18 | 0.60 | 2.00 | 0.025 | 0,020 | 0.11 | 0.20 | 0.20 | 0.80 | 0.80 | 0.20 | 0.015 | 0.30 | 0.005 | 0.015 |
D | 0.025 | 0,015 | ||||||||||||||
E | 0.020 | 0.010 | ||||||||||||||
Q62O | C | 0.18 | 0.60 | 2.00 | 0.025 | 0.020 | 0.11 | 0.20 | 0.20 | 1.00 | 0.80 | 0.20 | 0.015 | 0.30 | 0.005 | 0.015 |
D | 0.025 | 0.015 | ||||||||||||||
E | 0.020 | 0.010 | ||||||||||||||
Kupatula magiredi a Q345A ndi Q345B, chitsulocho chiyenera kukhala ndi chimodzi mwazinthu zoyengedwa bwino za tirigu Al, Nb, V, ndi Ti. Malinga ndi zosowa, wogulitsa akhoza kuwonjezera chinthu chimodzi kapena zingapo zoyengedwa zambewu, mtengo wapamwamba Uyenera kukwaniritsa zofunikira patebulo. Zikaphatikizidwa, Nb + V + Ti <0.22% °Kwa magiredi a Q345, Q390, Q420 ndi Q46O, Mo + Cr <0.30% oPamene giredi iliyonse ya Cr ndi Ni ikugwiritsidwa ntchito ngati chinthu chotsalira, zomwe zili mu Cr ndi Ni siziyenera kukhala oposa 0.30%; ikafunika kuwonjezeredwa, zomwe zili muzakudya ziyenera kukwaniritsa zofunikira patebulo kapena kutsimikiziridwa ndi wopereka ndi wogula kudzera mu zokambirana.J Ngati woperekayo angatsimikize kuti nayitrogeniyo ikukwaniritsa zofunikira patebulo, kusanthula kwa nayitrojeni kungatheke. osachitidwa. Ngati Al, Nb, V, Ti ndi zinthu zina za alloy zomwe zili ndi nitrogen fixation zimawonjezeredwa kuzitsulo, zomwe zili ndi nayitrogeni sizochepa. Zomwe zili ndi nayitrogeni ziyenera kufotokozedwa mu satifiketi yaubwino. 'Mukagwiritsa ntchito aluminiyumu yonse, zotayidwa zonse za AIt ^ 0.020% B |
Mechanical Property
No | Gulu | Mechanical Property | ||||
|
| Tensile | Zotuluka | Wonjezerani | Mphamvu (J) | Zamanja |
1 | 20G pa | 410- | ≥ | 24/22% | 40/27 | - |
2 | 20MnG | 415- | ≥ | 22/20% | 40/27 | - |
3 | 25MnG | 485- | ≥ | 20/18% | 40/27 | - |
4 | 15Mg | 450- | ≥ | 22/20% | 40/27 | - |
6 | 12CrMoG | 410- | ≥ | 21/19% | 40/27 | - |
7 | 15CrMoG | 440- | ≥ | 21/19% | 40/27 | - |
8 | 12Cr2MoG | 450- | ≥ | 22/20% | 40/27 | - |
9 | 12Cr1MoVG | 470- | ≥ | 21/19% | 40/27 | - |
10 | 12Cr2MoWVTiB | 540- | ≥ | 18/-% | 40/- | - |
11 | Mtengo wa 10Cr9Mo1VNbN | ≥ | ≥ | 20/16% | 40/27 | ≤ |
12 | Mtengo wa 10Cr9MoW2VNbBN | ≥ | ≥ | 20/16% | 40/27 | ≤ |
Kulekerera
Makulidwe a Khoma ndi Diameter Yakunja:
Ngati palibe zofunikira zapadera, chitolirocho chidzaperekedwa ngati m'mimba mwake wakunja ndi makulidwe a khoma. Monga tsamba lotsatira
Kutchulidwa kwamagulu | Njira yopangira | Kukula kwa chitoliro | Kulekerera | |||
Kalasi wamba | Makalasi apamwamba | |||||
WH | Chitoliro Chotentha (extrude) | Norminal kunja Diameter (D) | <57 | Mtengo wa 0.40 | ±0,30 | |
57 ndi 325 | SW35 | ±0.75%D | ±0.5%D | |||
S>35 | ±1%D | ±0.75%D | ||||
> 325 ndi 6. | + 1%D kapena + 5.Tengani yocheperapo一2 | |||||
> 600 | + 1%D kapena + 7,Tengani yocheperapo pa2 | |||||
Norminal Wall Makulidwe (S) | <4.0 | ±|・丨) | ± 0.35 | |||
> 4.0-20 | + 12.5%S | ±10%S | ||||
>20 | Chithunzi cha DV219 | ±10%S | ±7.5%S | |||
心219 | + 12.5%S -10%S | 土10%S |
WH | Chitoliro chowonjezera chamafuta | Norminal kunja Diameter (D) | zonse | ±1%D | ± 0.75%. |
Norminal Wall Makulidwe (S) | zonse | + 20%S -10%S | + 15%S -io%s | ||
WC | Zozizira (zokulungidwa) Ppipe | Norminal kunja Diameter (D) | <25.4 | ±l1j | - |
>25.4 〜4() | ± 0.20 | ||||
> 40 〜50 | |:0.25 | - | |||
> 50 〜60 | ± 0.30 | ||||
> 60 | ±0.5%D | ||||
Norminal Wall Makulidwe (S) | <3.0 | ±0.3 | ±0.2 | ||
>3.0 | S | ±7.5%S |
Utali:
Utali wanthawi zonse wa mipope yachitsulo ndi 4 000 mm ~ 12 000 mm. Pambuyo pokambirana pakati pa wogulitsa ndi wogula, ndikudzaza mgwirizanowu, ukhoza kuperekedwa mapaipi achitsulo ndi kutalika kwa 12 000 mm kapena kufupikitsa kuposa I 000 mm koma osachepera 3 000 mm; kutalika kwapang'onopang'ono Kuchuluka kwa mapaipi achitsulo osakwana 4,000 mm koma osachepera 3,000 mm sikuyenera kupitilira 5% ya kuchuluka kwa mapaipi achitsulo omwe amaperekedwa.
Kulemera kwake:
Pamene chitoliro chachitsulo chimaperekedwa molingana ndi m'mimba mwake mwadzina ndi makulidwe a khoma lodziŵika kapena m'mimba mwake mwadzina ndi makulidwe a khoma, chitoliro chachitsulo chimaperekedwa molingana ndi kulemera kwake. Itha kuperekedwanso molingana ndi kulemera kwamalingaliro.
Pamene chitoliro chachitsulo chimaperekedwa molingana ndi m'mimba mwake mwadzina ndi makulidwe ochepa a khoma, chitoliro chachitsulo chimaperekedwa molingana ndi kulemera kwake; maphwando ogulitsa ndi ofunikira amakambirana. Ndipo zikuwonetsedwa mu mgwirizano. Chitoliro chachitsulo chikhoza kuperekedwanso molingana ndi kulemera kwa chiphunzitso.
Kulekerera kulemera:
Malinga ndi zofunikira za wogula, pambuyo pokambirana pakati pa wogulitsa ndi wogula, ndi mu mgwirizano, kupatuka pakati pa kulemera kwake ndi kulemera kwake kwa chitoliro chachitsulo kudzakwaniritsa zofunikira izi:
a) Chitoliro chachitsulo chimodzi: ± 10%;
b) Gulu lililonse la mapaipi achitsulo okhala ndi kukula kochepa kwa 10 t: ± 7.5%.
Chofunikira Choyesa
Mayeso a Hydraustatic:
Chitoliro chachitsulo chiyenera kuyesedwa hydraulically mmodzimmodzi. Kuthamanga kwakukulu kwa mayeso ndi 20 MPa. Pansi pa kukakamizidwa kwa mayeso, nthawi yokhazikika iyenera kukhala yosachepera 10 s, ndipo chitoliro chachitsulo sichiyenera kutuluka.
Wogwiritsa ntchito akavomera, kuyesa kwa hydraulic kumatha kusinthidwa ndi kuyesa kwa eddy panopa kapena kuyesa kwa maginito kutayikira.
Mayeso Osawononga:
Mipope yomwe imafuna kuyang'anitsitsa kwambiri iyenera kuyang'aniridwa ndi ultrasonically mmodzimmodzi. Pambuyo pa zokambiranazo zimafuna chilolezo cha chipanicho ndipo zafotokozedwa mu mgwirizano, mayesero ena osawononga akhoza kuwonjezeredwa.
Mayeso a Flattening:
Machubu okhala ndi mainchesi akunja opitilira 22 mm adzayesedwa kuphwanyidwa. Palibe delamination yowoneka, mawanga oyera, kapena zonyansa zomwe ziyenera kuchitika panthawi yonse yoyesera.
Kuyesa kwa Flaring:
Malinga ndi zofunika za wogula ndi ananena mu mgwirizano, chitoliro zitsulo ndi awiri akunja ≤76mm ndi khoma makulidwe ≤8mm akhoza kuchita flaring mayeso . Kuyesera kunkachitika kutentha kwa chipinda ndi taper ya 60 °. Pambuyo pakuwotcha, kutentha kwapakati pakunja kuyenera kukwaniritsa zofunikira patebulo lotsatirali, ndipo zoyeserera siziyenera kuwonetsa ming'alu kapena ming'alu.
Mtundu wa Chitsulo
| Kunja m'mimba mwake kuphulika kwa chitoliro chachitsulo /% | ||
Diameter Yamkati / Yakunja Diameter | |||
<0.6 | > 0.6 〜0.8 | > 0.8 | |
Chitsulo chapamwamba cha carbon structural | 10 | 12 | 17 |
Structural alloy steel | 8 | 10 | 15 |
• Kuchuluka kwa mkati kumawerengeredwa kwa chitsanzo. |