In today’s world, where climate change and environmental issues are at the forefront of global concerns, every effort to protect our planet counts. The Aluminum Diffusion manufacturing method that is used to produce Daiwa Calorized Lance Pipe is among one of those efforts. With this manufacturing method, we can develop energy-efficient products to minimize environmental impacts when we have to use too many quick consumption products. Before digging deeper into the article below, we encourage you to refer to our previous articles about Daiwa CA Lance to get a more comprehensive overview first.
"Structure and Size of Daiwa Calorized Lance Pipe"
"The Importance of The Heat-Resistant Calorized Layer"
"Quick Consumption of Calorized Lance Pipe - How to Solve It?"
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Introduction to Aluminum Diffusion Method in Daiwa CA Lance
Aluminum Diffusion is a method that diffuses aluminum to make it deeply permeated into the inner and outer structure of steel pipes.
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Thanks to Aluminum Diffusion, steel pipes will have a better heat-resistant aluminum-iron alloy layer and a stronger bonding structure between aluminum and iron to protect the base metal against severe oxidation and corrosion caused by the high temperature in the furnace or harsh environment.
The layer with high heat resistance and high hardness formed around the inner and outer surfaces of steel pipes after the Aluminum Diffusion manufacturing process ends is called Calorized Layer.
To understand more deeply about Calorized Layer, we will share more about its characteristics for you in the following part.
Characteristic of Calorized Layer (Created by Aluminum Diffusion)
Calorized Layers are created by diffusing aluminum into mild steel pipes at temperatures exceeding 1000°C. This process forms heat-resistant aluminum-iron alloys on both the inner and outer surfaces, enhancing the pipes' high-temperature resistance.
Calorized Layer created by the Aluminum Diffusion method provides numerous advantages to the material, especially in high-temperature and oxidizing environments. Its characteristics includes:
- Excellent oxidation and corrosion resistance: The aluminum alloy layer forms a very stable aluminum oxide (Al₂O₃) layer when exposed to oxygen. This oxide layer acts as a protective barrier, preventing further oxidation from penetrating into the material.
- High temperature resistance: Thanks to the aluminum-iron alloy structure, Calorized Layer can withstand high temperatures without deformation or loss of stability.
- Good adhesion: The diffusion process of aluminum into the surface creates a strong bond between the coating and steel pipes, ensuring high strength and adhesion.
- Increased hardness: The aluminum-iron alloy layer increases the hardness of the surface, helping the material withstand stresses and abrasion better.
How is Aluminum Diffusion Different from Traditional Aluminum Coating?
At Daiwa Lance, we employ the Aluminum Diffusion method to create a superior aluminum-iron alloy Calorized Layer for all CA Lance products. This process ensures aluminum to be more deeply penetrated into the structure of steel pipes, providing exceptional corrosion resistance and durability.
Nowadays, some oxygen blowing pipes on the market claimed as heat-resistant, while superficially resembling Daiwa CA Lance, but use traditional Aluminum Coating - a different way to produce Daiwa Calorized Lance - instead of Aluminum Diffusion.
Simply put, Aluminum Coating is a manufacturing method that applies a protective aluminum layer onto the surface of steel pipes. This method merely creates an external coating, enveloping the underlying steel base. Although it still enhances heat resistance and corrosion protection in some way, the coating's uneven thickness and the lack of aluminum-iron alloy bonding make it susceptible to peeling, as a result, failing to extend the lance's lifespan as we expected.
Let's we summarize what's the difference between these two methods in the table below.
Conclusion
In this article, we've summarized the main points of Aluminum Diffusion and its significance in improving heat resistance and corrosion protection for Daiwa CA Lance. Additionally, the difference between Aluminum Diffusion and Aluminum Coating, which leads to a difference in the quality of the final product, is also a point worth noting.
To minimize environmental burdens and save money for your business , we encourage you to use lance pipes with the efficient method that provides high durability and longevity, thus simultaneously improving the living environment.
We understand that with the increasing costs of raw materials, price is one of the major concerns you have. Therefore, let us offer further guidance so you can select the most suitable product within your planned budget. Click the link below to reach out to Daiwa Lance.
