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High thermal conductive Pb-Li-Na alloy with excellent recovery performance

A high thermal conductivity, alloy technology, applied in the field of alloys, can solve the problems of complex smelting and pouring equipment and processes, toxic gases pollute the environment, damage alloy properties, etc. Effect

Inactive Publication Date: 2018-07-06
GUANGZHOU YUZHI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these two methods have their unavoidable defects, such as easy to produce toxic gas to pollute the environment and cause flux inclusions to damage the properties of the alloy
In addition, the smelting and pouring equipment and processes are complicated, which increases the cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A high thermal conductivity Pb-Li-Na lead-lithium alloy with excellent recovery properties when smelted at 350 degrees. In terms of weight percentage, the chemical composition of the alloy is: Li: 1.2wt.%, Na: 0.3wt.%; In: 1.5wt.%, Zr: 0.5wt.%, Pd: 0.7wt.%, W: 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 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 degrees for 10 minutes, it is cast into the same level equipment as the hot top for semi-continuous casting into the required square and round ingots. The ingot moving speed is 14m / min. The ingot can be used as casting raw material for pressure casting in the subsequent process to prepare lead-lithium alloy castings with complex shapes; the f...

Embodiment 2

[0020] A high thermal conductivity Pb-Li-Na lead-lithium alloy with excellent recovery properties when smelted at 370 degrees. In terms of weight percentage, the chemical composition of the alloy is: Li: 0.9wt.%, Na: 0.3wt.%; In: 1.5wt.%, Zr: 0.4wt.%, Pd: 0.6wt.%, W: 0.3wt .%, 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 15m / min. The ingot can be used as casting raw material for pressure casting in the subsequent process to prepare lead-lithium alloy castings with complex sha...

Embodiment 3

[0023] A high thermal conductivity Pb-Li-Na lead-lithium alloy with excellent recovery properties smelted at 390 degrees. In terms of weight percentage, the chemical composition of the alloy is: Li: 1.4wt.%, Na: 0.4wt.%; In: 2.5wt.%, Zr: 0.6wt.%, Pd: 0.7wt.%, W: 0.3wt.% .%, 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 14m / min. The ingot can be used as casting raw material for pressure casting in the subsequent process to prepare lead-lithium alloy castings with complex ...

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PUM

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Abstract

The invention discloses a high thermal conductive Pb-Li-Na alloy with excellent recovery performance and a processing technology thereof. The high thermal conductive Pb-Li-Na alloy comprises, by weight, 0.6-1.5% of Li, 0.2-0.4% of Na, 1.2-2.8% of In, 0.3-0.8% of Zr, 0.5- 0.9% of Pd, 0.1-0.4% of W, and the balance lead. The high thermal conductive Pb-Li-Na alloy has excellent recovery performance which is not possessed by lead alloys for conventional shielding materials, and has high heat transfer performance. The high thermal conductive Pb-Li-Na alloy can be widely used in a variety of shielding conditions and has excellent radiation protection.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a lead-lithium alloy. Background technique [0002] The core part of the nuclear energy system is the reactor. Nuclear fission (or fusion) produces different energy levels of neutrons, gamma rays, secondary gamma rays, and other charged particles and high-energy rays. Reactor shielding is to surround the reactor with a certain thickness of shielding material to block or weaken a large number of neutrons and gamma rays emitted by the reactor. As a result of the interaction between the neutrons and the nuclei of the shielding material, the energy and direction of motion of the neutrons can be changed, and the neutrons may also be absorbed by the nuclei. [0003] There are three main criteria to consider when designing radiation shielding materials. 1:) The shielding material must basically meet the radiation shielding requirements, that is, it has a good moderation or shielding ef...

Claims

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Application Information

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IPC IPC(8): C22C11/00C22C11/02C22C1/02C22F1/12C22F1/02G21F1/08
CPCC22C11/00C22C1/02C22C11/02C22F1/02C22F1/12G21F1/085
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD
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