2results about How to "Fully refined grains" patented technology

The present application relates to a kind of Q235HR steel plate for nuclear power plant containment and its production method, belong to metallurgical technical field.The chemical composition of steel plate is as follows: C:0.06%~0.16%, Si:0.05%~0.35%, Mn:0.60%~1.20%, P≤0.025%, S≤0.010%, Al:0.020%~0.050%, N≤0.012%, Cr≤0.30%, Cu≤0.30%, Mo≤0.08%, Nb≤0.020%, Ni≤0.30%, Ti≤0.030%, V≤0.020%, Ca:0.0010%~0.0035%, the balance is Fe and inevitable impurities.The production thickness is 6~60mm, and the metallographic structure is ferrite+pearlite.The mechanical properties of delivery state and simulated postweld heat treatment state both satisfy: yield strength≥235MPa, tensile strength: 360MPa~480MPa, elongation≥24%, -20 ℃ low temperature impact energy≥47J, the Z direction section shrinkage rate Z of thickness 15mm~60mm steel plate is≥35%, and 180 ° bending test D=0.5a is qualified.

The application discloses a laser and gas mist synergistic shape control device for robot incremental forming, which comprises a first robot and a second robot arranged on two sides of a plate respectively; the first robot and the second robot are kept relatively static at all times; the first robot is fixedly provided with a first tool head, a first laser and a first gas mist nozzle, and the first tool head, the first laser and the first gas mist nozzle are kept relatively static at all times; the first laser and the first gas mist nozzle are located on two sides of the first tool head respectively; the area of a coverage area of gas mist sprayed by the first gas mist nozzle is 1.5-5 times the area of an irradiation area of laser emitted by the first laser; the second robot is fixedly provided with a second laser and a second gas mist nozzle, and the second laser and the second gas mist nozzle are kept relatively static at all times; the area of a coverage area of gas mist sprayed by the second gas mist nozzle is 1.5-5 times the area of an irradiation area of laser emitted by the second laser. The device can improve forming precision and forming quality.