42CrMo steel plate is a strength steel with high strength and toughness, good hardenability, no obvious temper brittleness, high fatigue limit and multiple impact resistance after quenching and tempering treatment, and good low temperature impact toughness. The steel RA hull construction steel is suitable for manufacturing large and medium-sized plastic molds that require certain strength and toughness.
The company adheres to the people-oriented concept and takes "learning, sharing, gratitude, integrity, respect and responsibility" as the enterprise values. Advanced equipment, scientific standardized management, strict quality assurance system and high-quality team are the core competitiveness of the company. The company will continue to provide customers with RA hull construction steel high-quality, timely and perfect steel products and services under the guidance of the mission of "striving for perfection to meet customer needs".
Both steelmaking and ironmaking are carried out by oxidation-reduction reaction, but there are great differences between them in reaction objects: ironmaking is to reduce iron, while RA hull construction steel steelmaking is to remove excessive carbon and other impurities in pig iron, so there are relations and differences between them in actual operation. There are three main methods of RA hull construction steel steelmaking: converter, electric furnace and flat furnace. The converter steelmaking process is most widely used.
With the increase of temperature, the yield limit of RA hull construction steel will decrease monotonically, but the tensile strength of RA hull construction steel will rise to a high peak value at a certain temperature, and then decrease. This peak temperature is called the blue brittleness temperature of RA hull construction steel. Near the blue brittleness temperature, the RA hull construction steel strength increases and the plasticity decreases. The elongation and section shrinkage of RA hull construction steel increase with the increase of temperature, but there is a low peak at the blue brittleness temperature. The blue brittleness temperature of low carbon steel ranges from 200 ℃ to 250 ℃. The blue brittleness of low alloy steel is not obvious as that of low carbon steel, and the blue brittleness temperature is higher.
Adhere to the spirit of quality first and user foremost, carry out maintenance and other work according to the requirements of the buyer's contract, and ensure that the engineering project and product after-sales play their application effectiveness. Our company guarantees to carry out self inspection and self supervision according to the quality management policy proposed by our company, and deliver a high-grade, perfect and excellent system engineering to users.
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