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High-temperature-resistant Cr-containing lead lithium alloy with excellent die casting performance

A high temperature resistant, alloy technology, applied in the field of alloys, can solve the problems of complex smelting and pouring equipment and processes, toxic gas pollution of the environment, damage to alloy properties, etc.

Inactive Publication Date: 2018-06-05
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-temperature-resistant Cr-lead-lithium alloy with excellent die-casting properties smelted at 350 degrees. In terms of weight percentage, the chemical composition of the alloy is: Li: 2.1wt.%, Cr: 0.3wt.%, Nd: 0.2wt.%, Bi: 0.4wt.%, Co: 0.4wt.%, Si: 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 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, and the ingot moves down at a speed of 12m / min. The ingot can be used as a casting raw material for pressure casting in the subsequent process to prepare complex-shaped lead-lithium alloy castings; ...

Embodiment 2

[0020] A high-temperature-resistant Cr-lead-lithium alloy with excellent die-casting properties smelted at 370 degrees. In terms of weight percentage, the chemical composition of the alloy is: Li: 1.8wt.%, Cr: 0.2wt.%, Nd: 0.2wt.%, Bi: 0.4wt.%, Co: 0.4wt.%, Si: 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 10m / min. The ingot can be used as a casting raw material for pressure casting in the subsequent process to prepare complex-shaped lead-lithium alloy castings; the ...

Embodiment 3

[0023] A high temperature resistant Cr-containing lead-lithium alloy with excellent die-casting properties melted at 390 degrees. By weight percentage, the chemical composition of the alloy is: Li: 1.8wt.%, Cr: 0.3wt.%, Nd: 0.3wt.%, Bi: 0.4wt.%, Co: 0.5wt.%, Si: 0.4wt% .%, the balance is lead. The preparation method of the alloy: the above-mentioned raw materials are added to the induction furnace protected by the atmosphere, and a silicon carbide crucible is used; the alloy solution is formed by induction heating to 390 degrees, and the electromagnetic stirring effect is used to fully stir for about 10 minutes; After being kept at 390 degrees for 10 minutes, it was cast into the hot top level equipment for semi-continuous casting into the required square ingots and round ingots, and the ingot moving speed was 12m / 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 fi...

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PUM

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Abstract

The invention discloses a high-temperature-resistant Cr-containing lead lithium alloy with excellent die casting performance and a processing technology thereof. The alloy comprises the following ingredients in percentage by weight: 1.2-2.5wt.% of Li, 0.2-0.4wt.% of Cr, 0.2-0.3wt.% of Nd, 0.3-0.5wt.% of Bi, 0.4-0.5wt.% of Co, 0.2-0.5wt.% of Si and the balance of lead. The lead lithium alloy disclosed by the invention has excellent castability compared with lead alloy used for the traditional shielding material and has strong high temperature resistance. The lead lithium alloy disclosed by theinvention can be widely applied to the military and civilian fields and is great in significance.

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): C22C11/02C22C1/02C22F1/02C22F1/12
CPCC22C11/02C22C1/02C22F1/02C22F1/12
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD
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