316L stainless hlau: ib qho ultra-low carbon hlau rau 316 stainless hlau (06Cr17Ni12Mo2). Ultra-low carbon austenitic stainless hlau muaj qhov zoo corrosion kuj rau ntau yam inorganic acids, alkalis thiab ntsev (xws li sulfite, sulfuric acid, phosphoric acid, acetic acid, formic acid, chlorine ntsev, halogen, sulfite, thiab lwm yam). Vim tias cov ntsiab lus tsis tshua muaj cov pa roj carbon monoxide, nws muaj kev ua haujlwm vuam zoo thiab tsim nyog rau ntau txheej vuam, thiab feem ntau tsis tas yuav tsum tau kho cua sov tom qab vuam, thiab tsis muaj kev nyiam ntawm riam ntug corrosion tom qab vuam. Nws tuaj yeem siv rau hauv kev tsim cov hluavtaws fibers, petrochemical, textile, chiv, luam ntawv thiab dyeing thiab atomic zog thiab lwm yam khoom siv, xws li yees, tank, ntim, pipelines, thiab lwm yam.
Yog li ntawm no los lo lus nug: Puas yog txoj kev ua kom txias muaj qhov cuam tshuam rau 316L stainless hlau vuam? Txoj kev ua cua txias twg yog qhov kev lag luam tshaj plaws? Kev kuaj mob: siv electrode arc vuam (SMAW), kev sim siv 316L stainless hlau phaj thickness 40mm, 55 degree X-shaped equilateral bevel, 1mm blunt ntug, vuam siv 1G tiaj vuam txoj hauj lwm. Vuam siv lub vuam pas nrig txoj kab uas hla ntawm 3.2 hli, ziab ua ntej vuam 350 degree × 1h, vuam tam sim no 80 ~ 120A, arc voltage 24 ~ 28V, qhov siab tshaj plaws tshav kub input ntawm 14.4kJ / cm. welding test, siv tib lub vuam tsis, siv cov nram qab no peb txoj kev txias vuam 316L stainless hlau.
(1) cua txias
Tom qab txhua qhov vuam ua tiav, kev siv cov cua compressed mus rau lub vuam channel tshuab cua txias, compressed cua los ntawm cov cua duct nyob rau hauv cov kev taw qhia mus rau tib lub weld kom txias lub weld. Qhov kev ntsuam xyuas pom tias cov vuam siv cov cua tshuab cua txias, cov nyhuv tsis zoo, qhov vuam txias yog qeeb, txhua qhov vuam tom qab ua tiav vuam, nws yuav siv sij hawm ntau tshaj 20min, qhov vuam kub yuav poob mus txog 40 degree (tsis yog. kub rau kov).
(2) weld rov qab immersion txias
Ua ntej, lub welded xeem phaj taub qab bevel sab ntawm lub hauv qab weld, sab nraub qaum ntawm cov hauv paus hniav, sib tsoo thiab ntxuav, PT tshuaj xyuas kom paub meej tias tsis muaj qhov tsis xws luag, qhov ntsuas phaj thickness kev taw qhia ib nrab rau hauv dej (bottoming weld zoo sab rau hauv. dej). Tom qab ntawd weld qhov seem weld, kom lub nraub qaum ntawm weld yog immersed nyob rau hauv dej kom ua tiav lub hom phiaj ntawm txias lub weld. Vim tias qhov tsis zoo thermal conductivity ntawm 316L stainless hlau, txoj kev txias ntawm kev siv sab nraum qab ntawm lub vuam rau hauv dej, qhov vuam cua txias kuj tsis zoo tagnrho, tom qab ua tiav ntawm txhua qhov vuam, nws yuav siv sij hawm ntau tshaj 15min, lub weld. kub kom poob mus txog 40 degree (tsis kub rau qhov kov).
(3) weld dej txias
Nyob rau hauv lub hauv paus ntawm ob txoj kev txias, tsis yog tsuas yog cov welded xeem phaj rau hauv dej, tab sis kuj txhua weld tom qab ua tiav ntawm vuam, ncaj qha mus rau saum npoo ntawm cov dej weld kom txias lub weld. Qhov kev ntsuam xyuas qhia tau hais tias kev siv cov vuam dej txias txoj kev, qhov vuam txias ceev tau nrawm nrawm, txhua qhov vuam tom qab ua tiav ntawm vuam, tsuas yog li 3min dej txias, qhov vuam kub yog txo kom txog 40 degree (tsis kub rau qhov kov). .
Hauv cov ntsiab lus, peb tuaj yeem txiav txim siab tias kev siv vuam dej txias txoj hauv kev rau vuam 316L stainless hlau yog qhov ua tau los coj cov txiaj ntsig rau kev tsim khoom tiag tiag.