High-purity Argon
Introduction
High-purity argon is a colorless, odorless, and inert gas with extremely low chemical reactivity. It is not the main product in air separation units, but rather a high-value byproduct extracted from the main distillation column. Obtaining high-purity argon requires the addition of separate crude argon and refined argon columns for deep distillation, which involves a high level of technical expertise.
The primary functions of air separation products revolve around two key characteristics: absolute inertness and high heat capacity.
Ultimate protective atmosphere
In high-temperature or precision machining processes, it provides a pure protective layer that is heavier and more inert than nitrogen, completely isolating it from interference from oxygen and nitrogen.
Key process medium
Used as a stirring and degassing medium in stainless steel refining; as an arc stabilizing and molten pool shielding gas in welding; and as a heat transfer and atmosphere control gas in crystal growth.
Carrier gas and dilution gas
Used as a stable and pure carrier gas or filling gas in analytical instruments and special lighting.
Benefits that can be brought
Production efficiency
Improve the performance of key materials: such as the corrosion resistance of stainless steel, the minority carrier lifetime of silicon wafers, and the strength and aesthetics of welded joints.
Productivity gains
Accelerate key process speeds: For example, in an AOD furnace, argon stirring can accelerate the reaction and shorten the smelting cycle..
Economic benefits
1. High value-added product: Argon is one of the highest-value conventional products in air separation units, and a significant source of profit.
2. Reduced scrap loss: Superior protective effects directly reduce the scrap rate caused by oxidation and nitriding.
Safety and social benefits
1. Empowering Cutting-Edge Manufacturing: It is an essential process gas for the development of strategic industries such as high-end stainless steel, semiconductors, and aerospace manufacturing.
2. Intrinsically Safe: The full distillation process avoids the explosion risks associated with traditional hydrogenation for argon production.
Main application industries
Stainless Steel and Metal Refining
Argon-Oxygen Decarburization (AOD Furnace): Used for decarburization and degassing in stainless steel refining.
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Semiconductors and Photovoltaics
Monocrystalline/ Polycrystalline Silicon Pulling (Czochralski Method): Used as a protective atmosphere for crystal growth.
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High-End Welding
TIG/ MIG Welding: Used for welding protection of aluminum alloys, stainless steel, and special metals.
03
Specialty Lighting and Scientific Research
Filling high-end electric light sources (such as LEDs and special lamps), and serving as a carrier gas for scientific experiments.
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Other Fields
High-temperature protection in 3D printing (metal powder sintering), graphite electrode production, etc.
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