Hot sales ship building carbon steel S690QL brinell hardness

Main properties of 20CrMn steel plate: high strength and toughness, and good hardenability. The performance obtained after heat treatment is better than 20Cr. The quenching deformation is small, the low temperature toughness is good, and the machinability is good; but the welding performance is low. Generally used after carburizing, quenching or quenching and tempering. 20CrMn steel is used for manufacturing and heavy-duty hardened and tempered parts with large cross section and carburized parts with small cross section.

XAR450 steel is a special structural steel material with high wear resistance. The average hardness of this special wear-resistant structural steel is 450HB, which has high hardness and good toughness. The structure built with this steel is stronger, lighter and can withstand impact loads. XAR450 steel is used for wear parts-exposed structures such as protective pads, shell walls, support and reinforcement plates for excavators, mining machines and bulldozers.

As the thickness and hardness of S690QL brinell hardness increase, the tendency to crack at the cutting edge increases. In order to prevent the S690QL brinell hardness from cutting cracks, preheating should be carried out before S690QL brinell hardness cutting. Special attention should be paid to preheating to make the entire S690QL brinell hardness interface evenly heated to avoid local overheating in the area contacting the heat source. If the whole S690QL brinell hardness cannot be preheated, the partial preheating method can be used instead.

It is a modern high-tech professional enterprise integrating scientific research, S690QL brinell hardness production and sales. The company is mainly engaged in the manufacture, installation and commissioning of boiler and pressure vessel, chemical, metallurgical, petroleum and other equipment, as well as S690QL brinell hardness process technology development, technology transfer and related technical consulting and technical services.

We have a professional after-sales department to collect all information related to customers, so as to make relevant treatment in time according to the information, and file it; guide the user's product use methods and precautions; coordinate with the sales department, visit customers regularly, understand the customer's use and new requirements, and make a customer visit record; When communicating with customers, they should be enthusiastic and careful to understand the situation of product problems and put forward solutions