Manufacturing method of chromium-aluminum ceramic alloy plate for neutron absorption shielding of nuclear power reactor

A ceramic alloy and thermal neutron shielding technology, applied in the field of chrome-aluminum ceramic alloy materials, can solve problems such as difficult compounding

Active Publication Date: 2012-09-05
山西银光华盛镁业股份有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the traditional powder metallurgy method is used to manufacture high-content boron carbide composite materials, it is difficult to compound the initial mixed powder of high-content boron carbide composite materials into plates with high density and good mechanical properties.

Method used

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Embodiment Construction

[0021] The boron carbide powder meshes are 60 mesh, 320 mesh, and 2000 mesh, and the mass ratio is 73:14:10. The total amount of boron carbide accounts for 40% of the composite material; the boron carbide oxidation treatment temperature is 800 ° C for 2 hours. The 1100-mesh chromium powder and the 100-mesh 6061 aluminum alloy powder accounted for 0.35% and 59.65% respectively in the composite material, and were dried in an oven at a temperature of 200° C. for 1 hour. Dry aluminum alloy powder, chromium powder, and oxidized boron carbide powder are put into the drum mixer, and chrome-plated steel balls are added to the drum, and the machine is turned on and mixed for 4 hours. Under the impact of the chrome-plated steel ball mixing, the friction of the aluminum alloy powder on the surface of the boron carbide and the formation of a welding layer occur, that is, the boron carbide is mechanically plated with aluminum. Properly controlled, mechanical aluminum plating of boron carbi...

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Abstract

The invention relates to a chromium-aluminum ceramic alloy material, discloses a manufacturing plate of a shielding plate for a new fuel storage rack, a spent fuel storage rack and a fuel temporary storage rack of an AP1000 nuclear power plant and particularly relates to the manufacturing method of a boron carbide particle-reinforced aluminum-based composite material neutron absorption shielding plate for a nuclear power reactor. The preparation method comprises the following steps of: mixing materials according to the proportion, adopting a two-way extrusion technology and pressing for forming a high-density cylindrical biscuit; placing the biscuit formed by pressing into a heating furnace for preheating, clamping a stock which is uniformly preheated into an extrusion mold which is preheated to the temperature of 400 DEG C, extruding the plate at the pressure of 7000MPa by using a 2000KN press, and finishing the extruded stock to get the neutron absorption shielding plate.

Description

technical field [0001] The invention relates to a chromium-aluminum ceramic alloy material, which is used for the manufacturing method of the shielding plate of the new fuel storage grid, the spent fuel storage grid and the fuel temporary storage rack of AP1000 nuclear power plant, and particularly relates to a boron carbide particle used in nuclear power reactors The invention discloses a manufacturing method of a neutron-absorbing shielding plate of reinforced aluminum matrix composite material. Background technique [0002] Westinghouse AP1000 nuclear power technology has already achieved a dominant position in the plans for new nuclear power plants in the United States. This technology has been identified as the main route of China's third-generation nuclear power technology. my country has introduced, digested, absorbed, and independently innovated to master the five core key technologies of AP1000. China is currently developing the country's first third-generation nuc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/20
Inventor 李华伦许月旺白永俊
Owner 山西银光华盛镁业股份有限公司
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