High thermal conductivity and high electrical conductivity Pb-Li-Rh lead-lithium alloy suitable for pressure casting

A technology with high electrical conductivity and high thermal conductivity, which is applied in the field of alloys, can solve the problems of complex melting and pouring equipment and processes, toxic gas pollutes the environment, and damages alloy properties, etc. poor effect

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, 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 Pb-Li-Rh lead-lithium alloy with high thermal conductivity and electrical conductivity that is melted at 350 degrees and suitable for die casting. In terms of weight percentage, the chemical composition of the alloy is: Li: 1.9wt.%, Rh: 0.6wt.%; Ge: 0.3wt.%, Ti: 0.4wt.%, Ag: 0.6wt.%, Mn: 1.2wt .%, the balance is lead. The preparation method of the alloy: add the above-mentioned raw materials into an induction electric furnace protected by the atmosphere, and use a silicon carbide crucible; induction heating to 350 degrees to form an alloy solution, and use the electromagnetic stirring effect to fully stir for about 10 minutes; After standing at 350°C for 10 minutes, it is cast into the hot top and the same level equipment for semi-continuous casting into the required square ingots and round ingots. The downward moving speed of the ingot is 12m / min. The ingot can be used as a casting material for pressure casting in the subsequent process to prepare complex-shaped lead...

Embodiment 2

[0020] A Pb-Li-Rh lead-lithium alloy with high thermal conductivity and electrical conductivity smelted at 370°C and suitable for die casting. In terms of weight percentage, the chemical composition of the alloy is: Li: 2.1wt.%, Rh: 0.7wt.%; Ge: 0.3wt.%, Ti: 0.4wt.%, Ag: 0.7wt.%, Mn: 1.2wt .%, the balance is lead. The preparation method of the alloy: Put the raw materials in the above proportion into an induction electric furnace protected by the atmosphere, and use a silicon carbide crucible; induction heating to 370 degrees to form an alloy solution, and use the electromagnetic stirring effect to fully stir for about 10 minutes; After standing at 370°C for 10 minutes, it is poured into the hot top and the same level equipment for semi-continuous casting into the required square ingots and round ingots. The downward moving speed of the ingot is 10m / min. The ingot can be used as a casting material for pressure casting in the subsequent process to prepare complex-shaped lead-li...

Embodiment 3

[0023] A Pb-Li-Rh lead-lithium alloy with high thermal conductivity and electrical conductivity that is smelted at 390 degrees and suitable for die casting. In terms of weight percentage, the chemical composition of the alloy is: Li: 2.2wt.%, Rh: 0.7wt.%; Ge: 0.3wt.%, Ti: 0.3wt.%, Ag: 0.6wt.%, Mn: 1.3wt .%, the balance is lead. The preparation method of the alloy: add the above-mentioned raw materials into an induction electric furnace protected by the atmosphere, 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 the alloy for about 10 minutes; After being kept at 390°C and standing for 10 minutes, it is cast into the equipment with the same level of hot top for semi-continuous casting into the required square ingots and round ingots. The downward moving speed of ingot is 12m / min. The ingot can be used as a casting material for pressure casting in the subsequent process to prep...

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Abstract

The invention discloses a high thermal conductivity and high electrical conductivity Pb-Li-Rh lead-lithium alloy suitable for pressure casting and a machining technology. The high thermal conductivityand high electrical conductivity Pb-Li-Rh lead-lithium alloy suitable for the pressure casting comprises, by weight, 1.8-2.4% of Li, 0.6-0.8% of Rh, 0.2-0.4% of Ge, 0.3-0.5% of Ti, 0.6-0.8% of Ag, 1.0-1.5% of Mn, and the balance Pb. Compared with a traditional lead alloy for shielding materials, the lead-lithium alloy has excellent advantages of heat conduction performance and electrical conduction performance, and suitable for being used under the pressure casting production condition. The high thermal conductivity and high electrical conductivity Pb-Li-Rh lead-lithium alloy suitable for thepressure casting is an alloy which can be used and widely applied under the various shielding conditions, and has an excellent anti-radiation property.

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 neutrons and the nuclei of the shielding material, the energy and direction of movement 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 slowing or shielding effect on neut...

Claims

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Application Information

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IPC IPC(8): C22C11/02C22C1/02
CPCC22C11/02C22C1/02
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD
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