The automobile structure NV D40 hull steel material steel coil is one of our featured products. The main standards for automobile structure steel coil are JIS G3113, EN 10149-2, Q-BQB 310-2009, SEW092, DIN 17102, etc. The automobile structure steel coil is always pickled. For the steel coil, our processing center provide slitting, cutting etc. services. Our main automobile structure steel grades are SAPH440, S355MC, S500MC, S700MC, QStE380TM, QStE500TM, NV D40 hull steel material etc.
Our company's NV D40 hull steel material power boilers, heating furnaces of double bars, double high lines and medium and thick plates all adopt heat storage technology, which can fully use blast furnace gas; the ladle baking, Maerz active lime kiln and medium and thick plate heat treatment furnace all burn converter gas, which can improve the NV D40 hull steel material utilization rate of secondary energy and realize negative energy steelmaking in steelmaking process.
In the cutting process of wear-resistant plate, NV D40 hull steel material, the steel plate is processed first, because the steel plate is cut after cutting and marking; the commonly used cutting methods for wear-resistant plate are CNC flame cutting and numerical control water cutting, the cost of numerical control flame cutting is not very high, it belongs to primary processing, and its processing range is from 3 mm to 100 mm steel plate. And numerical control water cutting is mainly used under the condition that cutting is required not to deform.
The microstructure of the quenched and tempered alloy steel, NV D40 hull steel material after conventional heat treatment is tempered sorbite. For parts with wear-resistant surface (such as gears and spindles), induction heating surface quenching and low-temperature tempering are carried out, and the surface structure is tempered martensite. The surface hardness can reach 55HRC-58HRC. After quenching and tempering, the yield strength of quenched and tempered alloy steel is about 800MPa, the impact toughness is 800kJ / m2, and the core hardness is 22HRC - 25HRC. If the cross-section size is large but not quenched, the properties will be significantly reduced.
We have a professional after-sales service team, the company has developed a clear service process and service standards, after-sales service team members strictly perform after-sales procedures, comply with service standards. The most important thing is that we have set up the correct concept of after-sales service, "customer first, sincere service for users".
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