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Home > welding consumables > Domestic 2Cr1MoV steel process welding
Domestic 2Cr1MoV steel process welding
2013-01-11 by xiugai
High-temperature, high-pressure hydrogenation reactor is the core of the hydrocracking and hydrodesulfurization unit equipment, today most of the Cr-Mo steel, the most commonly used 2
Cr-1Mo steel. Especially the hot-wall hydrogenation reactor shell almost most of the steel manufacturing. But with the hydrogenation process technology, in particular the development of residue hydrotreating modified coal hydrogenation liquefaction process, the size of the hydrogenation reactor increasingly more demanding design conditions, general 2Cr-1Mo steel have been difficult to meet requirements. 2Cr-1Mo-V steel, has a higher strength level; and having a higher resistance to high temperature creep properties; has a higher resistance to temper embrittlement capacity, better resistance against hydrogen erosion, hydrogen embrittlement and hydrogen-induced the ability of the crack, a very high resistance to stainless steel Welding Consumables layer stripping performance and therefore be more widely used.
A hydrogenation device using domestic steel production 2Cr-1Mo-V steel plate. The steel plant I first adopted are imported sheet. Because of the differences in metallurgy and heat treatment technology, previous experience data is not fully applicable. Product before application to do a series of tests for welding process, and part of the data with the imported sheet to compare test data to develop a more rational process parameters to provide the basis for the actual production.
2Cr-1Mo-V steel, air quenching due to the high content of alloying elements tend to be larger, easy to produce cold cracking in the heat affected zone and weld Welding Alloys, at the same time due to the steel Cr, Mo, V and other strong carbide forming elements reheat The formation of cracks has a great influence. To do this, seeking welding cold cracking and reheat cracking process conditions, the main purpose of to do craft weldability test.
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