Czasopismo
2003
|
R. 45, nr 2-3
|
65-68
Tytuł artykułu
Autorzy
Wybrane pełne teksty z tego czasopisma
Warianty tytułu
Investigations of degradation status in steel load carrying structure of ŁZKS 500 stocker-reclaimer
Języki publikacji
Abstrakty
Przedstawienie wyniki badań stopnia degradacji ustroju nośnego ładowarko-zwałowarki ŁZKS 500, pracującej przez blisko 30 lat na składowisku węgla kamiennego w Elektrowni Kozienice. Badania obejmowały ocenę wizualna ustroju i badania defektoskopowe ultradźwiękowe wybranych węzłów ustroju; w tym również pomiary ubytków korozyjnych w prętach o skomplikowanym kształcie przekroju.
Wheel stacker-reclaimers working on coal stacking yards are long-lived machines. Over the years of operations, machine load carrying structure is gradually degraded. Paper presents results of technical condition examinations of steel load currying structure of ŁZKA 500 stacker-reclaimer, working over 30 years on coal stacking yard in Kozienice Power Plant. The first stage of investigations included visual examinations of carrying structure. In the second phase, flaw tests were performed at selected places of carrying structure having critical meaning for machine safety and those, which condition brought attention during visual inspection. Load carrying structure was showing sings of considerable corrosion damages, especially in bucket wheel jib. The largest corrosive losses occurred in places of coal dirt accumulation. Ultrasonic test showed that steel wall thickness in rods (and closed profiles) of bucket wheel jib had locally over 50% of corrosive losses. However, inspection did not reval any fatigue damages. Only one teat in welded connection was found in a tower of load carrying structure and had character of immediate steel scrap. Ultrasonic flaw test showed that one bolt, in connection of bucket wheel jib to tower, is showing a small internal defect that might occurred during production process. In remaining tested places no defects were found. According to general assessment of stell load carrying structure was due to repair and after its completition machine could be back in operation.
Czasopismo
Rocznik
Tom
Strony
65-68
Opis fizyczny
Bibliogr. 7 poz., rys.
Twórcy
Bibliografia
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.baztech-article-BSL7-0007-0035
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