Titanium has the characteristics of high specific strength, resistance to seawater and marine atmospheric corrosion, non-magnetic, sound permeability, resistance to shock and vibration and good workability, which is a high-quality ship material. For ship materials, welding is an important processing means for its structure manufacturing. The adaptability of various marine titanium and titanium alloys to welding processing, Fordelene og ulemperne ved svejsningens ydeevne, der er direkte relateret til deres anvendelse i skibsstrukturen .
Titanium varieties, grades, for its application in different fields, the relevant performance requirements are not the same. The main application function of titanium alloy for marine use is corrosion resistance to seawater and marine atmosphere, high specific strength, high toughness and excellent processing performance. Due to the wide range of applications of titanium in the field of ships, such as ship structure, propulsion systems, power systems, Elektroniske informationssystemer, hjælpesystemer til specielle enheder osv. ., og har derfor brug for en række egenskaber, sorter og specifikationer for titanlegeringsmaterialer .
Marine titanium og titanlegeringsvejsning, følger normalt princippet om lige styrke og får styrke og plasticitet, sejhed og koordinering . Derfor i udvælgelsen af svejsematerialer:
① Generelt udvælgelse af homogene svejsematerialer;
② For at forbedre ledets plasticitet kan der anvendes end basismetallegeringsgraden lidt lavere end svejseforbrugsstoffer;
③ For at forbedre svejsemetalens plasticitet skal gapelementindholdet i ledningen være lavere end indholdet af basismetallet .
According to the results of research on marine titanium alloy welding applications over the years and regression analysis of test data shows that: to obtain the weld metal and base metal isotropy, generally require the alloy composition of the wire than the base material is lower than 1 Al equivalent. In order to control the content of impurity elements in the weld metal after welding at a low level, the original content of impurity elements in the wire should be strictly Kontrolleret . pålideligheden af marine titanlegeringsvejsede led er stort set relateret til den strukturelle form af leddet . For marine titaniumlegeringsvejsede strukturstresslettelsesvarmebehandling, bør være baseret på karakteristika for forskellige legeringer, til at bestemme varmebehandlingsprocessystemet, i orden til at opnå varmebehandlingseffekten {.}}}}}}}}}}}}}}
Most marine titanium alloys have excellent welding processing performance. Alloy application process, for the characteristics of various alloys, the structure of the use of working conditions, the correct design of the joint form, a reasonable choice of welding materials, the development of a reasonable welding process, to provide a good welding high temperature zone, reliable gas protection and the correct use of stress relieving measures is to ensure that the key to obtaining a comprehensive performance of the marine Titanium Alloy svejsede led .
