Vpliv reparaturnih zvarov na lastnosti zvarnega spoja

Tomaž Vuherer (Author), Danilo Rojko (Author), Vladimir Gliha (Author)

Abstract

V predstavljenem delu smo preučevali vpliv reparaturnega varjenja na mehanske lastnosti in zaostale napetosti. Poseben problem so začetki in konci reparaturnih zvarov. Reparaturni zvari so po večini kratki, varimo pa jih na že obstoječi var. Lokalno se spremenijo lastnosti materiala vara, ki v kombinaciji s škodljivimi nateznimi zaostalimi napetostmi lahko pomenijo nevarnost za pojav kthkega loma. V tej raziskavi so bile zaostale napetosti izmerjene pred reparaturnim varjenjem in po njem ter nato primerjane med seboj. Po reparaturnem varjenju dobimo bolj neugodno porazdelitev zaostalih napetosti, ki jim je treba posvetiti posebno pozornost.

Keywords

varjenje;zvarni spoji;zaostale napetosti;reparaturni zvari;trdota;

Data

Language:	Slovenian
Year of publishing:	2001
Typology:	1.01 - Original Scientific Article
Organization:	UM FS - Faculty of Mechanical Engineering
Publisher:	Inštitut za kovinske materiale in tehnologije Ljubljana
UDC:	621.791.05:620.17:539.53
COBISS:	6213910
ISSN:	1580-2949
Parent publication:	Materiali in tehnologije
Views:	1745
Downloads:	120
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Influence of repair welds on the weld-joint properties
Secondary abstract:	The influence of repair welding on the mechanical properties and residual stresses has been studied. Special problems are associated with the start and end of repair welds. Repair welds are usually short and they are deposited on an existing weld. The mechanical properties can be changed. The interaction between the weak material and the harmful tensile residual stresses increases the risk of brittle fracture. Residual stresses were measured before and after repair welding and compared with each other. The distribution of residual stresses after repair welding is more inconvenient than before the repair welding. This is the reason why special attention has to be paid to this distribution.
Secondary keywords:	welding;welded joints;residual stresses;repair welds;hardness;
URN:	URN:NBN:SI
Type (COBISS):	Scientific work
Pages:	str. 61-64
Volume:	ǂLetn. ǂ35
Issue:	ǂšt. ǂ1/2
Chronology:	2001
ID:	1748224