Njira yochizira kutentha kwa induction welding seam

Chitsulo chachitsulo ndi mtundu waukulu wazitsulo zomwe ma welds amafunikira chithandizo cha kutentha kuti apititse patsogolo makina. Zitsulo zomwe zimagwiritsidwa ntchito mumagulu osiyanasiyana azitsulo zamphamvu ndi zofunikira zawo kuti zikhale zolimba kutentha kwa chipinda zili mu Table 6-2. Kutengera mitundu yachitsulo ndi zida zamakina zomwe zalembedwa mu Table 6-2, njira zazikulu zochizira kutentha kuti ziwongolere magwiridwe antchito onse a welds zimaphatikizapo chithandizo chamankhwala, normalizing + tempering treatment, quenching + tempering treatment ndi njira zina. Pakali pano, chithandizo cha weld normalizing chimagwiritsidwa ntchito kwambiri popanga mapaipi otsekemera, ndipo njira zina zochizira kutentha sizinayambe kukhazikitsidwa. Chithandizo chapamwamba kwambiri cha weld kutentha ndikuzimitsa ndi kutenthetsa mzere wopanga. Chithandizo chokhazikika chimagwiritsidwa ntchito kwambiri m’mizere yayikulu yowotcherera yopangira zitoliro kunja, ndipo chithandizo chozimitsa ndi kutentha chimagwiritsidwa ntchito ndi makampani aku Japan ndi European Union okha. Kuzimitsa Kutentha kwa induction ndi kutentha kwa ma welds ndiye njira yachitukuko chamtsogolo.

Table 6-2 Standard chitsulo kalasi ndi chipinda kutentha mphamvu payipi zitsulo

(1) Weld induction heating normalizing chithandizo chimaphatikizapo kuchiza annealing, nthawi zina amatchedwa stress relief annealing. The induction Kutentha normalizing ndondomeko ya weld ndi kutentha weld kutentha pamwamba Ae, ndiyeno mpweya utakhazikika pansi 400 °C ndi madzi utakhazikika kutentha kutentha pambuyo 900 ~ 950 ° C. Mwanjira iyi, kupsinjika kwamkati kwa kuwotcherera kumathetsedwa, njere ya weld imayengedwa, mawonekedwe a microstructure amawongoleredwa, ndipo pulasitiki ndi mphamvu yakuwotcherera imapangidwa bwino. Kuwotchera kutenthetsera kutenthetsera mankhwala ndikoyenera chitsulo chochepa cha aloyi ndi zitsulo zotsika kwambiri zamphamvu, zofanana ndi mapaipi otsekedwa pansi pa kalasi yachitsulo ya X60. The kuwotcherera msoko induction Kutentha annealing chithandizo ndi kutentha msoko wowotcherera 700 ~ 750 ° C wapawiri gawo zone, ndiyeno mpweya utakhazikika kutentha firiji, cholinga ndi kuthetsa kupsyinjika kwa mkati kuwotcherera ndi kukonza pulasitiki. Annealing mankhwala zimagwiritsa ntchito mpweya zitsulo ndi ena wamba otsika aloyi zitsulo welded mapaipi. Izi kawirikawiri ntchito m’nyumba welded mizere kupanga chitoliro.

(2) Weld induction Kuwotcha normalizing + kutentha mankhwala Pambuyo mankhwala normalizing, pamene kuuma weld akadali mkulu ndipo pulasitiki akadali otsika, mkulu kutentha kutentha mankhwala angagwiritsidwe ntchito kuthetsa izo. Kuwotcha ndi kutentha kwa induction ndikuwotcha weld mpaka kutentha pansi pa Ad, nthawi zambiri pafupifupi 650 ℃ ndiyeno kuziziritsidwa ndi mpweya. Pambuyo pa kutentha kwa kutentha kwapamwamba, mawonekedwe a martensite muzitsulo zosaphika amasandulika kukhala sorbite ndi ferrite, pulasitiki ya weld imakhala bwino, kuuma kumachepetsedwa, ndipo mphamvu imasintha pang’ono. teni njira yochizira kutentha iyi, yomwe imadziwikanso kuti kuzimitsa, kuzimitsa ndi kuyika njira yotenthetsera mzere wowotcherera ndiukadaulo wapamwamba kwambiri. Pambuyo quenching ndi kutentha, mabuku mawotchi katundu kuwotcherera msoko kwathunthu kufika mlingo wa chitoliro thupi, kuzindikira kufanana kwa kuwotcherera msoko ndi chitoliro thupi ntchito. Pachimake chaukadaulo wochizira kutentha uku ndikuwongolera ukadaulo wowotchera maginito kuti zitsimikizire kufanana komanso kulondola kwa kutentha kwa kutentha. Kwa otsika aloyi mkulu-mphamvu zitsulo ndi yaying’ono-apanga mkulu-mphamvu zitsulo welds, quenching Kutentha kutentha ndi 900 ~ 950 ℃, kutentha kutentha kutentha ndi 600 ~ 650 ° C, kuzimitsa kutengera kuzirala kutsitsi, ndi kutentha kutengera mpweya. kuziziritsa ndi kuziziritsa madzi. Phatikizani kuziziritsa. Pamene kutentha kozimitsira ndi kutentha kumatenthedwa ndi mphamvu ya maginito yotalika, kulondola kwa kutentha kumatha kufika ± 10 ° C, yomwe ndi yoyenera kulamulira kutentha kwa mapaipi amphamvu kwambiri kuti apitirize kugwira ntchito mokhazikika. Kugwiritsa ntchito yopingasa kumunda Kutentha welds amafunanso mkulu mwatsatanetsatane kutentha kulamulira • panopa • China akadali mu siteji chitukuko, kulondola kwa kusiyana kwakukulu. Komabe, akukhulupirira kuti ukadaulo wotenthetserawu ugonjetsedwe posachedwa, ndipo msoko wa weld udzatenthedwa ndikutenthedwa ndi kutentha kwapaintaneti.