The first phase of the project plans to build 3 NPR new material production lines, each of which has an annual production capacity of 25,000 tons and an output value of 500 million yuan. After all of them are put into operation at the end of May, a fully automated unmanned smart factory will be born. Seven production lines are planned for the second phase, with an annual output value of 3.5 billion yuan; after reaching 10 lines as a whole, the annual output value can reach 5 billion yuan.
"The fracture point of ordinary steel is at the" neck ", and the surrounding area is also significantly thinner. This local plastic deformation will cause great harm to the project. After the NPR material is stressed, it will not be thinner in the horizontal direction, but it will be abnormal. It evenly thickens or does not have the "neck" necking phenomenon, and at the same time has a large deformation capacity. "At the scene of the NPR new material intelligent production line of Academician He Manchao's team, the technical person in charge of the project introduced that, in general, strong and tough two characteristics like The two ends of the seesaw are difficult to achieve equilibrium. The new NPR material developed by Academician He Manchao's team overcomes the contradiction between high yield strength and high uniform elongation, and achieves both strength and toughness. At the same time, the material also has the characteristics of no magnetism and resistance to strong magnetic fields It is expected to be applied in the coal mining industry, earthquake-resistant structures, and underground engineering.
At the site of the NPR new material intelligent production line, the technician took two ordinary rebars with a length of one meter and a diameter of 16.5mm and NPR steel to simulate the nature of the disaster in the deep soft rocks and rock slopes—the problem of large deformation. Longitudinal tensile contrast test. With the continuous increase of tensile strength, when the strength reaches 116KN, ordinary steel "snap" and break; while NPR material steel does not break until the strength continues to increase to 230KN. And the monitoring data show that the yield strength point value of ordinary steel is only 1/3 of NPR material, and when it reaches 85KN, the deformation is irreversible.