AZ31B Anti Corrosion Rod Water Heater G97 Hot Water Heater Anode

Water Heater Extruded Magnesium Anode For Cathodic Protection

Introduction:

Sacrificial anodes are the main component of current cathodic protection systems. These blocks, rods, plates or extruded strips are made of metal alloys that have a lower voltage activity than the structural alloys that need to be protected. In other words, the electron supply that facilitates the dissolution of the primary metal will be transferred or consumed by the "sacrificial" metal.

we provide two types of extruded magnesium alloy anode:Mg-Mn alloy with high potential and AZ31 alloy with standard potential.

Features:

• The potential is relatively negative, the polarizability is low, the density is small, the theoretical capacitance is large, the effective potential difference with iron is large, and the protection radius is large.
• Through secondary refining, high purity, less impurities and dense structure
• Small grains, high current efficiency and good electrical properties
• The content of flux slag is low
• The surface is smooth, clean, free of pores, shrinkage cavities and slag inclusions
• Products of different specifications can be designed and produced according to user requirements to meet customer needs
• The potential is greater than 1.48V, the efficiency is greater than 55%, and the bar yield is over 98%.

Chemical composition %:

Extruded rod anodes size specification:

Production Process:

1. Casting equipment

The use of high-power resistance furnace can realize automatic temperature control, and the efficiency of stretching equipment is greatly improved.

2. Melting and pouring process

Ingredients: According to the requirements of alloy composition, the required amount of master alloys, magnesium ingots, zinc ingots, aluminum ingots, bar sawing heads, and other returning materials should not exceed 10% of the total charge.
Feeding and smelting: Check the crucible according to the regulations. After meeting the requirements, power on the resistance furnace, preheat the crucible to 400~500℃, and evenly sprinkle a layer of powder RJ-2 flux on the bottom and inner wall of the crucible. Then the charge preheated to above 150°C is added in sequence. The addition of the charge should be placed as densely as possible to narrow the gap between the charges. Then gradually increase the temperature. When 1% of the total charge is melted, the furnace temperature is adjusted to 730 °C for metamorphism treatment, and samples are taken for fracture inspection.
The key to adopting the low-pressure oxygen-free pouring process is the coordination and synchronization of pouring speed, stretching speed and cooling water volume. Otherwise, there will be undercasting and breakage of the stretch rod.

3. Inspection and sawing

After the drawn bar products pass the sawing gate and the appearance inspection, the necessary heat treatment is carried out in the heat treatment furnace, and then the second sawing is performed according to the length required by the user.

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