Preheating cutting: The most effective way to prevent steel plate cutting cracks is to preheat before cutting. Before flame cutting, the steel plate is usually preheated, and the preheating temperature mainly depends on the quality level and thickness of the steel plate. The preheating method can be carried out with flame burner, electronic heating pad, or heating furnace. In order to determine the preheating effect of the steel plate, the required temperature should be tested at the heating point.
BBNsteel A514 Gr E alloy steel plate medium plate product discount: 17.5*2850*8450, 18.5*1940*12100, 18*2770*4000, 19.5*2980*12050, 20*3000*8570, 19.5*1970*4000, 18.5*1640*8450, 19.5*1490*8500, 19*2580*4700, 20*3200*9000, 20*1600*7740, 18.5*1850*14050, 19.5*1910*6300, 21*1630*6000, 22*1300*10000, 19*2640*7810, 21*2650*7500, 21*1920*8220, 22*1380*7650, 21*1920*9270, 20.5*1590*6000, 21*2980*6460.
In 2010, the 87th session of the International Maritime Organization (IMO) Maritime Committee passed the "Performance Standards for Alternative Anticorrosion Measures for Crude Oil Cargo Tanks". It is mandatory that the cargo tanks of large oil tankers above 5,000 dwt need to be protected or used The construction of corrosion-resistant steel promotes the rapid development of the research and application of corrosion-resistant steel for oil tankers in China. At present, the performance of domestic corrosion-resistant steel has reached the world's leading level and can meet the requirements of large-scale applications.
Vanadium element (V element) can refine grains in ordinary low carbon alloy steel, improve the strength and yield ratio and low temperature characteristics after normalizing, and improve the welding performance of steel, A514 Gr E alloy steel plate included. Vanadium element (V element) is often used in combination with manganese, chromium, molybdenum, tungsten and other elements in structural steel because of its low hardenability under general heat treatment conditions. Vanadium in quenched and tempered steel is mainly to improve the strength and yield ratio of steel, refine the grain size, and pick up the overheating sensitivity.
