{"id":12266,"date":"2022-01-13T06:56:36","date_gmt":"2022-01-13T06:56:36","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=12266"},"modified":"2022-02-22T09:25:45","modified_gmt":"2022-02-22T09:25:45","slug":"aluminium-casting-degassing","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/ar\/aluminium-casting-degassing\/","title":{"rendered":"Aluminium Casting Degassing"},"content":{"rendered":"

Aluminium Casting Degassing can greatly improve the quality and output of aluminum products, thus improving the profitability of aluminum smelting and casting plants.<\/span><\/p>\n

Hydrogen can be burned in a gas stove, and condensate from tools, refining flux<\/a> \u0648 \u0625\u0636\u0627\u0641\u0627\u062a \u0627\u0644\u0633\u0628\u0627\u0626\u0643<\/a> are introduced into the liquid aluminum.<\/span><\/p>\n

Most commonly, however, hydrogen is introduced into the molten aluminum by atmospheric humidity.<\/span> The solubility of hydrogen increases with the relative humidity of the atmosphere.<\/span><\/p>\n

Given its light weight, aluminum is a metal that is often used because of its relative strength.<\/span><\/p>\n

However, when casting aluminum, impurities called inclusions can create weak links in the product.<\/span><\/p>\n

These inclusions have many causes, but the presence of hydrogen is one of the most common.<\/span><\/p>\n

Hydrogen is soluble in liquid aluminum, which passes through molten aluminum almost as easily as air.<\/span><\/p>\n

As the liquid metal cools and hardens, hydrogen flows from areas of high pressure to areas of low pressure.<\/span><\/p>\n

It coalesces and produces air pockets that become inclusions and weak spots when the metal solidifies.<\/span><\/p>\n

Aluminium Casting Degassing is a process used to remove hydrogen from molten aluminum.<\/span><\/strong><\/p>\n

\"Aluminium<\/p>\n

As the demand for high-quality aluminum products increases, especially in the aerospace industry, so does the need to reduce inclusions in molded products.<\/span><\/p>\n

A popular method of removing hydrogen is to inject nitrogen gas into liquid aluminum.<\/span><\/p>\n

The hydrogen is attracted by the nitrogen bubble, which is then absorbed by the aluminum and released to the surface.<\/span><\/p>\n

Argon is also very effective, but nitrogen is preferred due to the high cost associated with this gas.<\/span><\/p>\n

Degassing device<\/a> is an automatic metal liquid treatment system for environmental protection, degassing and slag removal of aluminum alloy.<\/span><\/p>\n

The degassing device uses an impeller principle with a rotor that generates tiny inert gas bubbles and mixes them with liquid metal.<\/span> These fine bubbles are evenly distributed in the liquid metal without disturbing the surface balance, which maximizes the contact area between the gas and the liquid metal.<\/span> The high efficiency of the degassing unit results in higher levels of degassing and slag removal and shorter treatment times.<\/span><\/p>","protected":false},"excerpt":{"rendered":"

Aluminium Casting Degassing can greatly improve the quality and output of aluminum products, thus improving the profitability of aluminum smelting and casting plants. 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