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High-strength and high-temperature-resistance Pb-Li-Hf lead lithium alloy for shielding material

A shielding material and high-temperature-resistant technology, which is applied in the field of alloys, can solve the problems that the anti-combustion performance cannot meet the requirements, achieve excellent alloy yield, reduce usage, and overcome the effects of poor specific gravity

Inactive Publication Date: 2018-06-15
GUANGZHOU YUZHI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as a structural material, it is far from enough to meet the requirements of only having combustion resistance during smelting. More importantly, the final lead-lithium alloy product must also have satisfactory mechanical strength, at least reaching the level commonly used. Mechanical properties of lead-lithium alloys

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A high-strength and high-temperature-resistant Pb-Li-Hf lead-lithium alloy for melting shielding materials at 350 degrees. In terms of weight percentage, the chemical composition of the alloy is: Li: 1.2wt.%, Hf: 1.5wt.%, Te: 0.6wt.%, Co: 1.3wt.%, Cu: 0.4wt.%, Pr: 0.1wt .%, and the balance is lead. The preparation method of the alloy: add the above-mentioned raw materials into the atmosphere-protected induction furnace, and use a silicon carbide crucible; induction heat to 350 degrees to form an alloy solution, and use the electromagnetic stirring effect to fully stir for about 10 minutes; put the alloy liquid in After standing at 350°C for 10 minutes, it is cast into the equipment at the same level as the hot top for semi-continuous casting into the required square and round ingots. The ingot moves down at a speed of 8m / min. The ingot is deformed at room temperature, and the amount of rolling in each pass is 12%; every 3 passes of rolling need an intermediate heat tre...

Embodiment 2

[0020]A high-strength and high-temperature-resistant Pb-Li-Hf lead-lithium alloy for melting shielding materials at 370 degrees. In terms of weight percentage, the chemical composition of the alloy is: Li: 1.5wt.%, Hf: 1.3wt.%, Te: 0.5wt.%, Co: 1.4wt.%, Cu: 0.3wt.%, Pr: 0.1wt .%, and the balance is lead. The preparation method of the alloy: add the above-mentioned raw materials into the atmosphere-protected induction furnace, and use a silicon carbide crucible; induction heat to 370 degrees to form an alloy solution, and use the electromagnetic stirring effect to fully stir for about 10 minutes; put the alloy liquid in After standing at 370°C for 10 minutes, it is cast into the equipment at the same level as the hot top for semi-continuous casting into the required square and round ingots. The ingot moves down at a speed of 10m / min. The ingot is deformed at room temperature, and the amount of rolling in each pass is 16%; every 3 passes of rolling requires an intermediate heat...

Embodiment 3

[0022] A high-strength and high-temperature-resistant Pb-Li-Hf lead-lithium alloy for melting shielding materials at 390 degrees. In terms of weight percentage, the chemical composition of the alloy is: Li: 1.5wt.%, Hf: 1.4wt.%, Te: 0.5wt.%, Co: 1.3wt.%, Cu: 0.2wt.%, Pr: 0.2wt .%, and the balance is lead. The preparation method of the alloy: add the above-mentioned raw materials into the atmosphere-protected induction furnace, and use a silicon carbide crucible; induction heat to 390 degrees to form an alloy solution, and use the electromagnetic stirring effect to fully stir for about 10 minutes; put the alloy liquid in After standing at 390 degrees for 10 minutes, it is cast into the equipment at the same level as the hot top for semi-continuous casting into the required square and round ingots. The ingot moves down at a speed of 10m / min. The ingot is deformed at room temperature, and the amount of reduction in each pass is 18%; every 3 passes of rolling need to be subjected...

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Abstract

The invention discloses a high-strength and high-temperature-resistance Pb-Li-Hf lead lithium alloy for a shielding material and a machining process thereof. The alloy comprises the following components in percentage by weight: 0.8-2.0 wt.% of Li, 1.2-1.6 wt.% of Hf, 0.4-0.8 wt.% of Te, 1.2-1.6 wt.% of Co, 0.2-0.5 wt.% of Cu, 0.1-0.2 wt.% of Pr, and the balance of lead. The lead lithium alloy achieves high strength and high-temperature resistance, which are not owned to a lead alloy for a traditional shielding material. The lead lithium alloy can be effectively applied to the field of nuclearpiles, medical radioactive source shielding, nuclear waste treatment and the like. The production process is simple, low in equipment requirement and convenient for large-scale industrial application.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a lead-lithium alloy. Background technique [0002] The use of nuclear energy is an important symbol of national defense strength and national economic level, and shows the comprehensive strength of a country. In the 21st century when energy is increasingly scarce, nuclear power will become the most important clean, efficient and reliable energy source. When the reactor is running, the nuclear fission reaction will produce a large number of neutrons and gamma rays, and the decay of fission products will also release alpha, beta particles and gamma rays. Alpha and beta particles have very short range, are easily absorbed by air or other objects, and generally do not pose a threat to operators. Neutrons and gamma rays are extremely penetrating. Blocking them requires protective shielding around the reactor to protect personnel and equipment from radiation. Materials composed of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C11/00C22C11/02C22C1/02C22F1/12C22F1/02
CPCC22C11/00C22C1/02C22C11/02C22F1/02C22F1/12
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD
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