What is the application of Q890D material?

Q890D material is a quenched and tempered steel plate for high-strength structure. In the grade, "Q" means yield, "890" means yield value, and "D" means grade. It is similar to the material S890Q. EN 10025-6 S890Q steel is a high strength, and toughness steel in min yield strength 890Mpa, -20 temperature impact energy 30J in quenched and tempered delivery station.
 
Q890D steel plate executive standard: GB/T 16270-2009
Q890D steel smelting method: smelted by oxygen converter or electric furnace.
Delivery status (heat treatment): quenching and tempering (quenching and tempering)
 
Inspection rules of Q890D steel plate:
The mechanical and technological properties of the steel plates shall be inspected by rolling one by one.
How to detect flaws: ultrasonic flaw detection
 
Q890D steel plate use:
Q890D quenched and tempered high-strength steel is suitable for the manufacture of coal mine hydraulic supports, heavy vehicles, construction machinery and other steel structures that require good welding performance. For example, drilling rigs, electric shovels, electric wheel dump trucks, mining trucks, excavators, loaders, bulldozers, various cranes, coal mine hydraulic supports and other structural parts used in mining and various engineering constructions are used for quenched and tempered high-strength steel Low carbon equivalent composition design, with good welding performance; shot blasting treatment before quenching of steel plate, heating of radiant tube of quenching furnace, non-oxidizing atmoSPHEre control and other measures, so that steel plate has good surface quality; special roller table design for quenching machine, water supply cooling in districts And so on, the mechanical properties of the high-quality steel plate are uniform and have a good plate shape.
 

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