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Smelting process for K418 mother alloy

A master alloy and process technology, which is applied in the field of master alloy material production and design, can solve the problems such as the inability to fully meet the increasing demand for high temperature resistance, tensile resistance, durability and other properties, and the effect is not ideal, and achieve good resistance. The effect of oxidation and hot corrosion resistance, less impurities and good stability

Inactive Publication Date: 2017-06-20
卞兴来
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  • Application Information

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Problems solved by technology

As a result, it cannot fully meet the increasing demand for high temperature resistance, tensile resistance, and durability of turbocharged diesel engines of ships and ships, and the effect is not ideal.

Method used

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Embodiment Construction

[0024] The present invention will be further explained by specific embodiments below.

[0025] A K418 master alloy smelting process, including the following steps:

[0026] Step 1. Prepare the raw materials and prepare the required amounts of each element of the raw materials according to the requirements. These raw materials include carbon (C) ≤0.14%, chromium (Cr) 13.2%, molybdenum (Mo) 4.2%, and niobium (N b ) 2.1%, aluminum (Al) 6.30%, titanium (Ti) 0.85%, boron (B) 0.01%, zirconium (Zr) 0.11%, the rest is nickel (Ni); chromium (Cr) is bottom silicon (Si) Yes, boron (B) is made of boron-nickel (B-Ni) alloy; zirconium (Zr) is sponge zirconium, which is easy to alloy and dissolves into molten steel; titanium (Ti) is sponge titanium, which is easy to alloy and dissolve into Molten steel; place the raw materials in an electric furnace dryer to remove water;

[0027] Step 2. Put the raw material after removing the moisture into the vacuum medium frequency induction melting furnace; ...

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Abstract

The invention relates to a smelting process for a K418 mother alloy. The smelting process for the K418 mother alloy is characterized by including the following operation steps that firstly, water in raw materials is removed, and the raw materials comprise smaller than or equal to 0.14% of carbon (C), 13.2% of chromium (Cr), 4.2% of molybdenum (Mo), 2.1% of niobium (Nb), 6.30% of aluminum (Al), 0.85% of titanium (Ti), 0.01% of boron (B), 0.11% of zirconium (Zr) and the balance nickel (Ni); secondly, the raw materials with the water removed is contained into a vacuum intermediate frequency induction smelting furnace; thirdly, the raw materials are smelted in the vacuum intermediate frequency induction smelting furnace; fourthly, molten steel is subjected to refining in the vacuum intermediate frequency induction smelting furnace to achieve alloying; and fifthly, the molten steel after refining alloying of the fourth step is subjected to casting molding, so that the K418 mother alloy can be obtained. By means of the smelting process for the K418 mother alloy, the K418 mother alloy is resistant to high temperature and stretching, high in staying power and excellent in performance.

Description

Technical field [0001] The invention relates to a smelting process of K418 master alloy, and belongs to the technical field of master alloy material production design. Background technique [0002] As a semi-finished product, master alloy is an important raw material in the metal industry. The elements are melted and recombined according to a certain process, the different elements are alloyed and the composition is adjusted, and then poured and solidified to achieve the required alloy properties. These properties include high temperature resistance, tensile resistance, etc. . [0003] In modern society, the master alloy is widely used, and it is an irreplaceable key material for the hot end parts of the diesel engine turbocharger of ships and naval vessels. However, the requirements for the existing master alloys are getting higher and higher, the purity is higher, and the requirements for solid, gas and other magazines are lower. In particular, the level of hydrogen in the use ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/05C22C1/02C22C1/06C22C1/03
Inventor 卞兴来
Owner 卞兴来
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