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Title:Študij razpokljivosti v hladnem v večvarkovnem varu, grajenem s postopkom varjenja pod praškom
Authors:ID Praunseis, Zdravko (Author)
ID Toyoda, Masao (Author)
ID Inštitut za kovinske materiale in tehnologije (Copyright holder)
Files:.pdf Materiali_in_tehnologije_2000_Praunseis,_Toyoda_Studij_razpokljivosti_v_hladnem_v_vecvarkovnem_varu,_grajenem_s_postopkom_varjenja_pod_p.pdf (280,65 KB)
MD5: B853BB7AD1555B647BEA7D7497447F0E
PID: 20.500.12556/dkum/1b07410b-6f3c-460d-8aca-3e61ea98543b
 
URL http://mit.imt.si/Revija/izvodi/mit006/praunseis.pdf
 
Language:Slovenian
Work type:Scientific work
Typology:1.02 - Review Article
Organization:FS - Faculty of Mechanical Engineering
Abstract:Problematika varivosti malolegiranih konstrukcijskih jekel se kaže tudi v fenomenu razpokljivosti v hladnem. V raziskavi je namenjena posebna pozornost nastajanju razpok v hladnem v večvarkovnem strjenem varu. Razpokljivost v hladnem v strjenem varu preprečujemo s predgrevanjem, za zagotovitev ustrezne mikrostrukture, s sušenjem oplaščenih elektrod ali praškov in s pogrevanjem zvrnega spoja za izhajanje raztopljenega vodika. Ker predgrevanje pomeni visok strošek pri gradnji zvarjene konstrukcije, je potrebna natančna določitev ustrezne temperature predgrevanja. V raziskavi je predstavljena eksperimentalna določitev temperature predgrevanja večvarkovnega strjenega vara debeline 50 mm, pri kateri ne bo prišlo do pojava razpok v hladnem. Ugotovljeno je, da nastanejo prečne razpoke v hladnem v večvarkovnem strjenem varu, grajenem s polnjeno žico Filtub 128 po postopku varjenja pod praškom (EPP postopek)pri temperaturi predgrevanja, ki je nižja od 7O °C.
Keywords:varjenje, zvarni spoji, konstrukcijska jekla, razpokljivost v hladnem, večvarkovni var, temperatura predgrevanja
Publication status:Published
Publication version:Version of Record
Year of publishing:2000
Number of pages:str. 409-414
Numbering:Letn. 34, št. 6
PID:20.500.12556/DKUM-28068 New window
ISSN:1580-2949
UDC:621.791.053:699.14.018.298
ISSN on article:1580-2949
COBISS.SI-ID:6026006 New window
NUK URN:URN:SI:UM:DK:1EDRA0D4
Publication date in DKUM:01.06.2012
Views:2440
Downloads:188
Metadata:XML DC-XML DC-RDF
Categories:Misc.
:
PRAUNSEIS, Zdravko and TOYODA, Masao, 2000, Študij razpokljivosti v hladnem v večvarkovnem varu, grajenem s postopkom varjenja pod praškom. Materiali in tehnologije [online]. 2000. Vol. 34, no. 6, p. 409–414. [Accessed 4 April 2025]. Retrieved from: https://dk.um.si/IzpisGradiva.php?lang=eng&id=28068
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Record is a part of a journal

Title:Materiali in tehnologije
Shortened title:Mater. tehnol.
Publisher:Inštitut za kovinske materiale in tehnologije
ISSN:1580-2949
COBISS.SI-ID:106193664 New window

Secondary language

Language:English
Title:A study of the cold cracking in multi-pass weld metal made by a submerged-arc welding process
Abstract:One of the weldability problems with HSLA steels is the cold cracking phenomenon. In this research special attention has been paid to cold cracks appearing in the multi pass weld metal. Cold cracking is prevented by the preheating of steel prior to welding in order to achieve a beneficial microstructure, and by the drying of the welding flux and the post heating of a welded joint for the expulsion of dissolved hydrogen. An accurate determination of the preheating temperature is necessary because of the high cost of the preheating during the build up of a welded structure. This paper deals with the experimental determintion of the preheating temperature for multi-pass weld metal with a thickness of 50 mm at which cold crcking in the welded joint could be eliminated.
Keywords:welding, welded joints, HSLA steels, cold cracking, multi pass weld metal, preheating temperature


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