Device for obtaining nitrogen-containing alloy by blowing nitrogen into molten metal

Abstract

The invention relates to a device for obtaining nitrogen-containing alloy by blowing nitrogen into molten metal. The device comprises a smelting furnace, wherein a supporting base is arranged on the outer side of the smelting furnace, and a stand column is arranged on the supporting base; a supporting arm is arranged on the stand column; an air cylinder is arranged at the front end of the supporting arm; a blowing rod is arranged at the front end of an air cylinder rod; an air inlet is formed in the blowing rod in the horizontal direction; a laser assembly is arranged on a transmitting rod; alight reflecting plate corresponding to the laser assembly is arranged on a measuring rod; a left laser assembly and a right laser assembly are arranged on the supporting base; and a light reflectingplate is arranged on the supporting arm. According to the device for obtaining the nitrogen-containing alloy by blowing nitrogen into the molten metal, the cost is low, the increment of nitrogen elements is linear and stable, the operation is simple and safe, and splashing is not prone to occur; and when chromium nitride is commonly used for increasing nitrogen, due to the burning loss, the amountof the added chromium nitride is not easy to control, and the melting time is prolonged due to multiple times of addition, so that other elements are burnt, and damage or accidents are caused due tothe fact that splashing is prone to occur.

Description

technical field [0001] The invention relates to a metal smelting method, in particular to a device for obtaining nitrogen-containing alloys by blowing nitrogen into molten metal. Background technique [0002] With the deepening of people's research on nitrogen-containing stainless steel, people have a clearer understanding of the positive impact of nitrogen on stainless steel. High-nitrogen steel is far superior to nitrogen-free steel in terms of mechanical and corrosion properties. At present, the research on high-nitrogen steel mainly focuses on austenitic steel or ferritic and martensitic steel; in addition, nitrogen is beneficial to steel types such as pearlitic steel and dual-phase steel. Nitrogen, as an important alloying element in steel, has broad development prospects, and the research and application of high-nitrogen steel has been paid more and more attention. [0003] Facing the implementation of global carbon dioxide emission reduction environmental regulations...

AI Technical Summary

Problems solved by technology

There are three problems in the process of increasing nitrogen in this alloy. One is that the nitrogen grade of the aforementioned alloy is low, and the recovery rate is unstable, resulting in a large amount of addition, which affects the drop of steel temperature and requires secondary heating. , which directly affects the production cost. Second, the addition will cause large fluctuations in other elements, requiring secondary or multiple adjustments to other elements, which will affect production efficiency and cost. Third, the nitrided alloy itself will bring in a lot of gold inclusions. Affect the purity of molten steel

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