ASTM A588 steel tuaj yeem txuas tau yooj yim nrog cov txheej txheem tsim nyog, ua rau nws tsim nyog rau kev tsim khoom hauv cov qauv siv thiab kev lag luam. Ntawm no yog cov ncauj lus kom ntxaws txog nws cov weldability:
Favorable Chemical Composition:
Nws cov ntsiab lus tsis tshua muaj carbon (ntau tshaj 0.16%) txo qhov kev pheej hmoo ntawm qhov nyuaj, nkig zones (martensite) tsim nyob rau hauv tshav kub- cuam tshuam cheeb tsam (HAZ) thaum vuam, uas tuaj yeem ua rau tawg. Tsis tas li ntawd, tswj cov qib ntawm alloying ntsiab (chromium, tooj liab, thiab lwm yam) kom tsis txhob muaj kev sib zog ntau dhau, ua kom muaj kev sib koom tes zoo.
Kev sib raug zoo nrog cov txheej txheem kev sib txuas:
Nws ua haujlwm zoo nrog cov txheej txheem vuam txheej txheem, suav nrog kev tiv thaiv hlau arc vuam (SMAW, lossis "stick welding"), roj hlau arc vuam (GMAW, lossis "MIG vuam"), flux-cored arc vuam (FCAW), thiab submerged arc vuam (SAW). Tsis muaj cov cuab yeej tshwj xeeb feem ntau xav tau.
Yam tsawg kawg nkaus ua ntej- thiab Post- Weld Treatments:
Tsis zoo li qee qhov siab - alloy steels, A588 tsis tshua xav tau ua ntej - vuam cua sov (tshwj tsis yog vuam cov ntu tuab heev) lossis xa tawm -weld nyem nyem kom muaj kev sib koom ua ke. Qhov no simplifies workflow thiab txo cov nqi.
Weld Hlau Matching:
Siv cov hlau muab tub lim tsim rau huab cua steels (piv txwv li, E7018-W lossis E8018-W rau SMAW) ua kom cov hlaws hlaws tsim muaj kev tiv thaiv zoo sib xws rau cov hlau hauv paus, tswj kev ua haujlwm tsis zoo ntawm kev sib koom tes.
Cov ntsiab lus tseem ceeb:
Tsis txhob ua kom txias sai ntawm thaj chaw weld (xws li, hauv huab cua txias) txhawm rau tiv thaiv HAZ brittleness - siv cov cua kub nruab nrab yog tias xav tau.
Ntxuav lub ntsej muag kom huv si ua ntej vuam kom tshem tawm cov roj, av, lossis xeb xoob, uas tuaj yeem ua rau cov vuam thiab tsis muaj zog.
