1. Yuav ua li cas Weld 253ma
TSEEM Pre -} vuam npaj
Khoom ntxuav: Kom huv si tshem tawm cov kev paug (roj, roj, xeb, los ntawm Weld sib koom tes thiab siv tshuaj yeeb (piv txwv li siv cov txheej txheem tshuab) nrog cov hlau stainless txhuam). Cov khoom paug tuaj yeem ua rau porosity, tawg, lossis txo corrosion tsis kam.
Kev sib koom ua: Xaiv rau yooj yim, tag nrho - Cov pob qij txha sib txawv (piv txwv li cov pob qij txha Zam kev sib tw ntawm qhov muag lossis cov fab ntse, uas nce kev pheej hmoo ntawm cov kev tawg kub.
Muab Too Hlau Xaiv Kev Xaiv Hlau: Siv Austenitic stainless hlau fitters tau tshaj 253mA cov muaj pes tsawg leeg. Qhov kev xaiv feem ntau yogER310Moln(rau kev txuam nrog lub zog thiab corrosion tsis kam) lossisEr253ma(tshwj xeeb tsim rau cov alloy). Zam kev ua pa hlau lossis qis {{{- ally fillers, raws li lawv yuav txwv lub weld kev ua tau zoo.
Vuam Cov Lus Taw Qhia
Roj Tungsten Arc Vuam (GTaw / TIG): Nyiam rau cov ntu nyias (<6 mm) or critical applications. Use pure argon (Ar) as shielding gas (flow rate: 10–15 L/min) and a water-cooled torch to control heat. Maintain a short arc length (1–2 mm) and travel speed of 100–150 mm/min.
Roj Hlau Hlau Arc Vuam (Gmaw / Mig): Suitable for thicker sections (>6 hli). Siv kev sib xyaw ntawm argon+ 2}}}}}}}} nitrogen cia (tseem ceeb rau 253ma lub zog). Xaiv cov hlau ruaj khov (piv txwv li, er310moln) nrog lub cheeb ntawm 0.8-1.2 mm thiab khaws cov lus tawm thaum tshav kub hauv qab no 1.5 KJ / hli.
Zam Txim Cov Txheej Txheem: Riure ntshiab ntawm siab - Cov txheej txheem kub xws li tsis muaj kev pheej hmoo ntawm cov kev pheej hmoo ntawm sutter arc.
Post -}} vuam kauj ruam
Cua txias: Tso cai rau Weld kom txias nyob rau hauv huab cua (tsis txhob quench). Ceevfaj txias tuaj yeem ua rau thermal ntxhov siab, thaum qeeb txias (nyob rau hauv lub cub tawg (nyob rau hauv lub cub tawg (nyob rau hauv ib tug cua sov) yuav tsis tsim nyog rau 253ma vim nws cov qauv Austenic (qis kev pheej hmoo ntawm kev sib haum xeeb).
Post -} weld tu: Tshem tawm Weld ci lossis oxidation siv stainless hlau hlau txhuam. Rau cov ntawv qhia tseem ceeb, ua cov kab xev (nrog nitric - hydroflluoric acid kua) kom dhau ntawm weld deg thiab rov kho corrosion tsis kam.
Kev kuaj xyuas: Cail tsis - Kev sim tshuaj (ndt) xws li kuaj pom, porosity, lossis tsis muaj fusion, lossis tsis muaj fusion, lossis tsis muaj kev sib tw.
2. Puas yog 253ma sib nqus?
3. Dab tsi yog qhov nyuaj ntawm 253ma?
Annealed mob: Tus qauv khoom xa rau 253ma yog annealed (rhuab rau 1050-1150 degree, tuav, tom qab ntawd cua {txias). Cov txheej txheem no muag muag cov khoom siv, txo txoj kev ntxhov siab sab hauv, thiab ua kom muaj cov qauv Austenic tag nrho, ua rau muaj qhov qis dua qhov tseem ceeb teev saum toj no.
Txias -} Ua haujlwm: Kev ua haujlwm txias (piv txwv li, dov tuab) nce kev cuam tshuam displation ntom hauv cov qauv Austenic, ua rau ua haujlwm tawv. Qhov no tsa lub hardness ho tab sis kuj yuav txo tau ductility {}}}}}}} ua haujlwm txias}
