LR DH42 Steel Phaj

 

 

Pre-welding Kev Npaj

Kev Tu Nto: Ua ntej welding LR DH42 steel daim hlau, nws yog ib qho tseem ceeb uas yuav tau ntxuav qhov chaw yuav tsum tau welded. Tshem tawm cov av, roj, xeb, thiab nplai siv cov txheej txheem xws li kev sib tsoo lossis xaim - txhuam, lossis cov txheej txheem tshuaj. Piv txwv li, siv cov kuab tshuaj-raws li cov tshuaj ntxuav tau zoo tshem tawm cov roj. Qhov no yog vim muaj cov kab mob ntawm qhov chaw tuaj yeem ua rau cov khoom siv tsis zoo, xws li porosity lossis tsis muaj fusion.

 

Phaj Alignment: Ua kom muaj kev sib raug zoo ntawm cov hlau phaj. Siv cov jigs tsim nyog los yog cov khoom siv los tuav cov phaj hauv txoj hauj lwm thaum vuam. Qhov sib txawv ntawm daim hlau yuav tsum tau khaws cia nyob rau hauv qhov kev pom zoo. Piv txwv li, qhov sib txawv hauv paus ntawm ib ncig ntawm 2 - 4 hli feem ntau haum rau feem ntau cov txheej txheem vuam siv nrog LR DH42 steel daim hlau.

 

Ua ntej cua sov: Nyob ntawm cov thickness ntawm cov hlau phaj thiab cov vuam tej yam kev mob, ua ntej cua sov yuav tsum tau. Rau tuab - ntu LR DH42 steel daim hlau (feem ntau saum toj no 20 - 25 hli), ua ntej - cua sov mus rau qhov kub ntawm 100 - 150 degree tuaj yeem txo qhov kev pheej hmoo ntawm qhov txias txias. Cov cua sov ua ntej pab ua kom qis qis ntawm qhov txias ntawm cov vuam thiab cov cua sov - cuam tshuam cheeb tsam (HAZ), tiv thaiv kev tsim ntawm cov tawv nqaij thiab brittle microstructures.

 

 

 

 

 

 

 

Siab zog tshuaj muaj pes tsawg leeg
Qib	C	Si	Mn	P	S
LR DH42	0.18	0.10-0.35	0.9-1.6	0.035	0.035

 

 

 

Vuam txheej txheem xaiv

Shielded Hlau Arc Vuam (SMAW): Qhov no yog ib txoj kev siv vuam ntau rau LR DH42 steel daim hlau. Thaum siv SMAW, xaiv cov electrodes uas haum rau qib steel. Piv txwv li, electrodes nrog qis - hydrogen txheej yog nyiam dua li lawv tuaj yeem txo qhov kev pheej hmoo ntawm hydrogen - induced cracking. Qhov vuam tam sim no thiab qhov hluav taws xob yuav tsum tau hloov kho raws li lub electrode txoj kab uas hla thiab lub thickness ntawm daim hlau. Rau ib tug 3.2 - hli - txoj kab uas hla electrode, ib tug vuam tam sim no ntawm ib ncig ntawm 90 - 130 A thiab ib tug voltage ntawm ib ncig ntawm 20 - 25 V yog ib txwm tej chaw.

 

 

 

Vim li cas thiaj xaiv peb?
Peb txaus siab rau peb lub peev xwm los muab cov kev cai daws teeb meem rau peb cov neeg siv khoom cov kev xav tau tshwj xeeb.
Peb txheeb xyuas thiab sib piv cov khoom dhau los thiab cov xwm txheej tam sim no ntawm peb LR DH42 Steel Phaj, thiab tsim cov kev qhia tshiab thiab cov txheej txheem.
Peb cov neeg siv khoom ntseeg peb kom xa cov khoom zoo Cold-rolled Steel khoom raws sij hawm thiab ntawm pob nyiaj siv.
Peb nruj me ntsis siv cov kev pab cuam sov so thiab kev xav tom qab muag, ua raws li kev txhim kho kev ua haujlwm zoo.
Peb muab ntau hom Cold-rolled Steel khoom kom tau raws li cov neeg siv khoom xav tau.
Peb ua raws li cov neeg siv khoom-centric thiab hom-taw qhia kev lag luam lub tswv yim, thiab txuas ntxiv muab cov neeg siv khoom txhim khu kev qha thiab cov khoom zoo thiab cov kev pabcuam.
Peb lub Hoobkas tau cog lus los txhawb nqa cov qauv siab tshaj plaws ntawm kev nyab xeeb thiab zoo.

 

Cim npe nrov: Lr dh42 steel phaj, Tuam Tshoj lr dh42 steel phaj lwm tus neeg, hoobkas