Vavu yamagetsi, masitepe otsuka ma silinda ambiri valve zitsulo zopanga ukadaulo

Vavu yamafuta, masitepe oyeretsera ma silinda ma valve ambiri zitsulo zopangira ukadaulo Kuyeretsa valavu ya gasi ndi valavu yachitsulo ndi chinthu chimodzi chomwe chiyenera kuchitika musanaphatikize zigawo ndi zigawo za valve. Izi zitha kutha kudzera munjira zingapo zokhwima. Ngati pali kunyalanyaza pamasitepe awa, ndizotheka kuyambitsa zoopsa zobisika m'tsogolomu. Kuyeretsa valavu ya gasi ndi valavu yachitsulo ndi chinthu chimodzi chomwe chiyenera kuchitidwa musanayambe kusonkhanitsa zigawo ndi zigawo za valve. Izi zitha kutha kudzera munjira zingapo zokhwima. Ngati pali kunyalanyaza pamasitepe awa, ndizotheka kuyambitsa zoopsa zobisika m'tsogolomu. Njira zoyeretsera ma valve ndi ma silinda a gasi Masitepe enieni: 1. Malingana ndi zofunikira zogwirira ntchito, mbali zina ziyenera kupukutidwa popanda kupukuta ma burrs pamwamba Zigawo zonse zimadetsedwa 3. Pickling passivation ikuchitika pambuyo pa degreasing, ndipo woyeretsa satero. muli phosphorous 4 Pambuyo pickling passivation, nadzatsuka ndi madzi oyera, palibe mankhwala zotsalira, mpweya zitsulo mbali sitepe iyi 5 Yanikani mbali imodzi imodzi ndi sanali nsalu nsalu. Osasiya pamwamba pa zigawozo ndi ubweya wa waya kapena zowuma ndi nayitrogeni waukhondo. Werengani masitepe omwe ali pamwambawa, ndikukhulupirira kuti mwamvetsetsa, khalidwe, chitetezo cha valavu ya botolo, mu chiyanjano chilichonse kuti muchite mosamala, chifukwa ndi njira iyi yokha yomwe chitetezo cha ogwiritsa ntchito ndi makasitomala ali ndi udindo! Makhalidwe aukadaulo a carbon steel forgings of mavavu wamba, ma flanges, zoyikira mapaipi ndi zofunikira zina zomangirira zitsulo za kaboni, njira zoyesera, malamulo oyendera, zofunikira zoyitanitsa, zizindikiro ndi ziphaso zabwino. Ingot iyenera kukhala ndi malekezero okwanira kuti ateteze zolakwika zovulaza (kuphatikiza kuchepa, kupatukana, kupindika, etc.). Forging adzaonetsetsa kuti mapindikidwe athunthu a forgings kuti akwaniritse mapangidwe ndi zofunikira zaukadaulo. Pa forging, ndi forgings ayenera kuonetsetsa kuti kuziziritsa pang'onopang'ono pamene kudutsa gawo kusintha kutentha osiyanasiyana. Pambuyo popanga kupanga, iyenera kukhazikika mpaka pansi pa 500 ℃ isanayambe chithandizo cha kutentha chomwe chinanenedwa. Kukula kwa mulingo uwu kumatanthawuza zofunikira, njira zoyesera, malamulo oyendera, zofunikira pakuyitanitsa, zizindikiritso ndi ziphaso zapaintaneti zamtundu wazitsulo zamtundu wa kaboni monga ma valve, ma flanges ndi zomangira mapaipi. Muyezowu umagwiranso ntchito pazambiri zopangira zitsulo zamtundu wa kaboni monga mavavu, ma flanges ndi zopangira zitoliro (zomwe zimatchedwa kuti forgings). Non - compression forgings akhoza kuchitidwa ndi kufotokoza. Chikalata cholozera cha Normative Zolemba zotsatirazi zikupanga zomwe zili mulingowu potengera Wood Standard. Zosintha zonse zotsatila (kupatulapo zolakwika) kapena zosinthidwa pazolemba zomwe zatchulidwa panthawi yachidziwitso sizikugwira ntchito pamlingo uwu. Komabe, omwe akuchita mgwirizano pansi pa Wood Standard akulimbikitsidwa kuti afufuze kagwiritsidwe ntchito ka zolembazi. Kwa maumboni omwe sanatchulidwe, matembenuzidwe awo amagwira ntchito pamlingo uwu. GB 150 chotengera chachitsulo cha GB/T 228 Chitsulo chachitsulo - Njira yoyesera yolimba kutentha firiji (GB/T 228-2000,eqv ISO 6892:1998) GB/T 229 Metal Charpy notch zotsatira njira yoyesera Metallic Brinell kuuma - Gawo 1: Njira zoyesera (GB/ T231.1-2002,eqv ISO 6506-1,1999) GB/T669 misa ya carbon structural chitsulo Malo ochitira zitsanzo ndi kukonzekera kwachitsanzo kwa mayeso a makina a GB/T2975 Steel and Steel Products (GB/T 2975) -1998,eqv ISO 377:1997) GB/T 13927 General valve pressure test (GB/T 13927-1992.neq ISO 5208:1982) JB 4725 chotengera chopondereza chokhala ndi carbon and low alloy steel forgings JB 4730 pressure chotengera ASTM A105 kafukufuku wothamanga chombo ASTM A105 / A1055:2003 Zipangizo za Carbon Steel for Paping Parts Zofunikira Pazonse Zofunikira Pazonse Zosankha zopangira molingana ndi zomwe zili mu Gulu 1, zida zina zofananira zitha kugwiritsidwa ntchito m'malo mwake. Table 1 Zopangira kalasi yopangira Chitsulo chopangira chizikhala chitsulo. Ingot iyenera kukhala ndi malekezero okwanira kuti ateteze zolakwika zowopsa (kuphatikiza kuchepa, kupatukana, kupindika, etc.). Forging adzaonetsetsa kuti mapindikidwe athunthu a forgings kuti akwaniritse mapangidwe ndi zofunikira zaukadaulo. Pa forging, ndi forgings ayenera kuonetsetsa kuti kuziziritsa pang'onopang'ono pamene kudutsa gawo kusintha kutentha osiyanasiyana. Pambuyo popanga kupanga, iyenera kukhazikika mpaka pansi pa 500 ℃ isanayambe chithandizo cha kutentha chomwe chinanenedwa. Kutentha mankhwala Forgings ndi kuthamanga mwadzina kuposa PN20 ndi flanges popanda kalasi kuthamanga ayenera kutentha mankhwala. Njira zochizira kutentha ndikuchepetsa, normalizing, kapena normalizing ndi kutentha. 25. Kutentha kwa kutentha kwachitsulo cha A105 kungatanthauze zomwe zili mu Table 2. Zida zina zidzatanthawuza miyezo yoyenera. Table 2 Kutentha kwa kutentha kwa kutentha Kutentha kwa mankhwala Kuphatikizika kwa mankhwala kudzakwaniritsa zofunikira za Table 3. Mankhwala opangidwa ndi zinthu zina malinga ndi malamulo a GB/T 699. Table 3 Kapangidwe ka mankhwala Pamene mpweya wotchulidwawo uli pansi pa 0.35%, pa kuchepetsa carbon 0.01I iliyonse, manganese 0.06% amaloledwa kuwonjezeredwa ku 1.05% ya manganese yomwe yatchulidwa mpaka idzakhala yoposa 1.35%. Chiwerengero cha Cu,Ni,Cr ndi Mo.v sichiyenera kupitirira 1.0% Cr ndipo kuchuluka kwa zomwe zili mu Mo zisapitirire 0.32%