Kev txhim kho txuas ntxiv ntawm kev tsim kho kev lag luam tau tso cai rau ntau cov khoom siv hauv tsev nkag mus rau hauv kev lag luam. National standard channel steel yog ib tug ntawm lawv, thiab nws yog dav siv. Yog li ntawd, peb yuav tsum kawm kom paub txog qhov zoo ntawm lub teb chaws tus qauv channel steel nyob rau hauv txhua yam thiab cov txheej txheem ntau lawm. Tom qab ntawd cov txheej txheem vuam ntawm lub teb chaws tus qauv channel steel thiab daim ntawv vuam yog dab tsi thiab cov txheej txheem twg muaj? Cia peb kawm ua ke!
Hauv qab no peb yuav qhia peb txoj kev vuam, thawj yog electrode arc vuam; qhov thib ob yog carbon dioxide (COz) gas shielded vuam; Qhov thib peb yog submerged arc vuam.
a. Qws arc vuam
Kev tuav arc vuam, tseem hu ua phau ntawv arc vuam, tes arc vuam lossis coated electrode arc vuam, yog ib txoj kev vuam uas siv tes ua electrode rau hluav taws xob nqaij vuam. Lub hauv paus ntsiab lus ntawm electrode arc vuam yog siv lub arc tshav kub generated los ntawm electrode thiab lub workpiece kom yaj cov hlau. Thaum lub sij hawm vuam txheej txheem, cov electrode flux melts thiab decomposes, tsim roj thiab slag. Raws li kev tiv thaiv kev sib koom ua ke ntawm cov pa roj thiab slag, cov teeb meem ntawm cov huab cua nyob ib puag ncig tau raug tshem tawm zoo. Los ntawm cov tshuaj tiv thaiv metallurgical ntawm cov hlau molten thiab cov slag ntawm qhov kub thiab txias, cov hlau raug txo thiab ua kom huv si kom tau txais qhov zoo tshaj plaws weld.
b. Carbon dioxide (COz) gas shielded vuam
Carbon dioxide (Cq) gas shielded welding yog ib qho kev siv vuam tshuab tsim nyob rau xyoo 1950. Raws li qib ntawm automation, nws tau muab faib ua ob hom: siab tsis siv neeg CO, Eagle shielded vuam thiab semi-automatic CO, roj shielded vuam. Thaum lub sij hawm tsim kho, lub teb chaws tus qauv channel steel feem ntau yog siv Semi-automatic ua.
(1) CO: Cov yam ntxwv thiab cov kev xav tau vuam ntawm cov roj shielded vuam.
(2) Kev sib xyaw ntawm semi-automatic gas shielded vuam tshuab. Semi-automatic CO thiab roj shielded vuam tshuab feem ntau muaj xws li arc vuam fais fab mov, hlau noj mechanism, vuam hlau, roj thiab lwm yam.
C. submerged arc vuam
Submerged arc zuam yog ib txoj kev vuam tsis siv neeg uas hluav taws xob kub hnyiab hauv kab noj hniav hauv granular flux txheej. Lub tshav kub ntawm lub arc melts lub weld seam, tawg hlau thiab flux, evaporates rau cov pa roj, thiab tso tawm lub arc nyob ib ncig ntawm lub pas dej ua ke. Lub kaw kab noj hniav nyob rau hauv uas lub arc hlawv stably. Sab saum toj ntawm lub pwm kab noj hniav yog ib txheej ntawm molten flux, uas yog slag zaj duab xis am. Cov txheej ntawm slag zaj duab xis no tuaj yeem tsis tsuas yog tiv thaiv lub pas dej molten hlau, tab sis kuj tseem tiv thaiv cov hluav taws xob arc los ntawm kev tawm hauv lub sijhawm ua haujlwm. Nyob rau tib lub sij hawm, thaum melting, ib tug loj npaum li cas ntawm flux muaj ib tug muaj zog nyhuv ntawm lub molten pas dej ua ke hlau. Txo, purification thiab alloying.
Lub ntsiab sib txawv ntawm submerged arc vuam thiab phau ntawv vuam yog tias nws yog tsuas yog siv los pib lub arc, tswj kom ruaj khov arc, thauj cov vuam hlau, txav lub arc, thiab sau cov arc crater kawg ntawm vuam thiab lwm yam kev ua. , tag nrho los ntawm kev siv lub submerged arc. pom tau.
