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A kind of magnesium alloy anode rod processing method

A magnesium alloy anode rod and a processing method technology, applied in the field of material preparation, can solve the problems of long rods, low production efficiency, poor surface finish and the like, and achieve the effects of improved electrochemical performance, high production efficiency, and improved bonding strength

Active Publication Date: 2016-08-03
厦门火炬特种金属材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, AZ63 alloy cannot be produced by extrusion process due to its high aluminum and zinc content and poor shaping.
At present, it is mainly poured manually through molds. Not only is the production efficiency low, the process operation is cumbersome and lengthy, but also human factors are more likely to affect the stability of product quality.
The current AZ63 magnesium anode rod has low production efficiency, poor surface finish, and cannot produce longer rods, which cannot meet the demand for this product in domestic and foreign markets

Method used

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  • A kind of magnesium alloy anode rod processing method

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Effect test

Embodiment 1

[0015] After the magnesium ingot is melted, raise the temperature to 730°C, add 2.5-3.5wt% Zn and 5.5-6.5wt% Al of the total alloy, and stir for 20-25 minutes after they are fully melted, 720-730 ℃ range for 30 minutes, then remove the slag from the bottom of the pot; when the temperature of the alloy melt drops to 670 ℃, keep warm and carry out electromagnetic stirring for 20 minutes; heat the iron wire with a diameter of 3mm at 400 ℃ to melt the above The body is poured into the crystallizer, and the iron wire is pulled at the same time. The melt solidifies around the iron wire at the water-cooled end to form an AZ63 anode rod with an outer diameter of 22mm, such as figure 1 shown.

[0016] For the above AZ63 magnesium alloy anode rods, equipped with two people for drawing casting and two people for mold pouring, working for eight hours, the drawing casting produces about 512m of AZ63 alloy rods, and the product pass rate is over 98%; the mold pouring is about 49m, and the p...

Embodiment 2

[0018] After the magnesium ingot is melted, raise the temperature to 740°C, add 2.5~3.5wt% Zn and 5.5~6.5wt% Al of the total amount of the alloy, and stir for 30~35 minutes after they are fully melted, 720~730 Stand still within the range of ℃ for 35 minutes, and remove the slag; when the temperature of the alloy melt drops to 690 ℃, keep warm and carry out electromagnetic stirring for 25 minutes; heat the iron wire with a diameter of 3 mm at 450 ℃, inject the above alloy melt into the crystallizer, and The iron wire is pulled, and the melt solidifies around the iron wire at the water-cooled end to form an AZ63 anode rod with an outer diameter of 22mm, such as figure 1 shown.

[0019] For the above AZ63 magnesium alloy anode rods, equipped with two people for drawing casting, two people for mold casting, three people for drawing casting, and three people for mold casting, working for eight hours, the drawing casting will produce about 768m of AZ63 alloy rods, and the product q...

Embodiment 3

[0021] After the magnesium ingot is melted, raise the temperature to 735°C, add 2.5~3.5wt% Zn and 5.5~6.5wt% Al of the total amount of the alloy, respectively, and stir for 25 minutes after they are fully melted. Set aside for 30-35 minutes, remove the slag; keep warm at 670-690°C and carry out electromagnetic stirring for 22 minutes; heat the iron wire with a diameter of 3mm at 400°C, pour the above alloy melt into the crystallizer, and pull the iron wire at the same time, and the melt is in the The water-cooled end solidifies around the iron wire to form an AZ63 anode rod with an outer diameter of 22mm, such as figure 1 shown.

[0022] For the above AZ63 magnesium alloy anode rods, equipped with 4 people for drawing casting and 4 people for mold pouring, and working for eight hours, the drawing casting will produce about 1018m of AZ63 alloy rods, and the product pass rate is over 96%; the mold pouring is about 95m, and the product pass rate is about 73% %.

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Abstract

The invention discloses a processing method for a magnesium alloy anode bar, which belongs to the field of material preparation technology. The method comprises the following steps for preparation of the AZ63 magnesium alloy anode bar: alloying and melting of an AZ63 magnesium alloy; standing and isothermal treatment of a melt; strong electromagnetic stirring; continuous casting and coating of an AZ63 anode bar; etc. According to the invention, since the method adopts continuous casting coating forming instead of extrusion forming, so the method has the characteristics of high production efficiency and short flow; the produced AZ63 magnesium alloy anode bar has high smoothness, high quality, greatly improved bonding strength due to metallurgical bonding between an iron core and a magnesium alloy coating and substantially improved structure uniformity and electrochemical performance; in particular, adoption of continuous casting coating enables a great-length AZ63 magnesium alloy anode bar to be produced, which is hard to realize in common die casting.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a processing method for magnesium alloy anode rods. Background technique [0002] Compared with aluminum and zinc anode materials, magnesium anode has the advantages of not easy passivation, large theoretical capacitance, etc., especially has extremely negative open circuit potential and driving voltage, and is very suitable for soil with high environmental resistance, as well as seawater, ocean Mud and industrial water quality environment. The currently developed magnesium alloy sacrificial anode materials mainly include MG (Mg-Mn alloy) high potential anode materials and AZ31, AZ63 common magnesium anode materials. Due to their good shape, MG and AZ31 alloys can be overmolded by extrusion process to produce rods and profile anode products of various specifications. However, AZ63 alloy cannot be produced by extrusion process due to its high aluminum an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F13/08C23F13/14C22C23/02C22C1/02
Inventor 邹宏辉马志新赵月红卢晓军
Owner 厦门火炬特种金属材料有限公司
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