Unlock instant, AI-driven research and patent intelligence for your innovation.

Magnesium alloy composite flux, preparation thereof and use thereof

A composite flux and magnesium alloy technology, which is applied in the field of metal materials and metallurgy, can solve the problems of complex melting process, multiple components, and high melting point of solvents for magnesium and magnesium alloys, and achieve excellent protection and purification effects

Inactive Publication Date: 2012-11-07
NEW MATERIAL INST OF SHANDONG ACADEMY OF SCI +1
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the flux function of magnesium alloy is relatively single at present, and the protection and purification of magnesium alloy are carried out separately, and the melting process of magnesium and magnesium alloy is relatively complicated.
[0005] The existing magnesium alloy covering agent or refining agent often adds ingredients for better purification effect, some contain fluoride, such as patent CN1288967A, which contains calcium fluoride; some add rare earth elements and other ingredients for better purification , such as the patent CN101260482A, not only has more ingredients, but also has a high melting point of the solvent, and its preparation and melting need to be above 750°C, which consumes more energy and heat, and has higher requirements for equipment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The composition and mass percentage of the composite flux used for the magnesium alloy are: 55% magnesium chloride, 15% potassium chloride and 30% sodium chloride.

[0019] The preparation method of the composite flux: respectively add magnesium chloride, potassium chloride, and sodium oxide into the crucible, raise the temperature to 600°C, stir after all flux raw materials are completely melted, and let stand for 10 minutes. After the flux melt is stable, pour the flux melt into the mold, solidify, crush, sieve and seal the package for use.

[0020] How to use the composite flux: first add 20% of the mass of the charge to the crucible, and adjust the temperature to 600°C. After the flux is completely melted, add the first batch of magnesium alloy charge, and then adjust the temperature to 760°C. After a batch of magnesium alloy charge is completely melted, the remaining magnesium alloy charge is added in batches. When adding charge in batches, under the premise of en...

Embodiment 2

[0022] The composition and mass percentage of the composite flux used for the magnesium alloy are: 55% magnesium chloride, 15% potassium chloride and 30% sodium chloride.

[0023] Preparation and use of composite flux: Add magnesium chloride, potassium chloride, and sodium oxide to the crucible respectively, raise the temperature to 500°C, stir after all flux raw materials are completely melted, and let stand for 10 minutes. After the flux melt is stable, the first batch of magnesium alloy charge is added, and after the first batch of magnesium alloy charge is completely melted, the remaining magnesium alloy charge is added in batches. When adding charge in batches, under the premise of ensuring that the added charge is completely submerged below the liquid level of the flux, the amount of each batch of charge should be added as much as possible. After each batch of charge is completely melted, add the next batch of charge. After adding and melting completely, remove excess fl...

Embodiment 3

[0025] The composition and mass percentage of the composite flux used for the magnesium alloy are: 45% magnesium chloride, 15% potassium chloride and 40% sodium chloride.

[0026] The preparation method of the composite flux: add magnesium chloride, potassium chloride, and sodium oxide into the crucible respectively, raise the temperature to 760°C, stir after all the flux raw materials are completely melted, and let it stand for 10 minutes. After the flux melt is stable, pour the flux melt into the mold, solidify, crush, sieve and seal the package for use.

[0027] How to use the composite flux: First, add 20% of the mass of the charge into the crucible, and melt it at 600°C. After the flux is completely melted, add the first batch of magnesium alloy charge, and then adjust the temperature to be below 760°C. In the meantime, after the first batch of magnesium alloy charge is completely melted, the remaining magnesium alloy charge is added in batches. When adding charge in bat...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
melting pointaaaaaaaaaa
Login to View More

Abstract

The invention relates to a magnesium alloy composite flux, preparation thereof and use thereof. The composite flux comprises the following components in percentage by mass: 45 to 55 percent of magnesium chloride, 15 to 25 percent of potassium chloride and 30 to 40 percent of sodium chloride. The preparation of the magnesium alloy composite solvent is implemented by the following steps of: adding the magnesium chloride, the potassium chloride and the sodium chloride into a crucible and heating to 500 to 760 DEG C; and after all raw materials of the flux are completely melted, stirring, standing and pouring to obtain the magnesium alloy composite flux. The using method of the magnesium alloy composite flux comprises the following steps of: adding the 10 to 20 percent of composite flux basedon the mass of furnace burden into the crucible, wherein the flux is melted at the temperature of between 400 and 600 DEG C; and after the flux is completely melted, adding the magnesium alloy furnace burden by batch. The composite flux has a low melting point and can realize double functions of protection and purification by using the three components, prevent the magnesium and magnesium alloy from oxidation and combustion during the melting and remove non-metallic impurities from the magnesium and magnesium alloy melt.

Description

technical field [0001] The invention relates to a magnesium alloy composite flux and its preparation and use, belonging to the field of metal materials and metallurgy. Background technique [0002] Compared with common structural materials such as steel and aluminum, magnesium alloys have lower density, high specific strength and high specific stiffness, excellent antimagnetic and shock absorption properties, good machinability and dimensional stability, and easy recycling. , has broad application prospects in the fields of transportation, communication and aerospace. [0003] The smelting of magnesium alloys is different from common structural materials such as steel and aluminum, because magnesium has high chemical activity, and it is very easy to oxidize with oxygen in the air at high temperatures, and even burn and explode; moreover, in the process of smelting magnesium alloys, it is inevitable Non-metallic inclusions such as oxides will be introduced, and the existence...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/06C22C23/00
Inventor 李卫红杨院生田长文唐守秋周吉学姜利坤
Owner NEW MATERIAL INST OF SHANDONG ACADEMY OF SCI