How does the titanium liquid change during the manufacturing process of titanium rods?

When manufacturing titanium alloys, the operation of adjusting the composition of the titanium alloy is called alloying, which includes alloying of the electric furnace treated titanium solution and fine-tuning of the alloy composition of the titanium solution in the later stage of the refining process. The traditional smelting process for producing titanium rods in electric furnaces usually involves pre alloying in the later stage of oxidation, before recovery, and fine-tuning the alloy composition during the later stage of titanium production. However, the process of producing titanium bars in modern electric furnaces is generally completed during the titanium extraction process, where alloying occurs in the titanium cladding, and precise alloy composition adjustments are ultimately completed in the refining furnace. Alloy operation mainly refers to the time and frequency of alloy participation.

Add alloy time. The overall principle for participating in ferroalloys during the smelting process is that elements with high melting points and low oxidation resistance can be added in advance, such as nickel, which can be added together with the furnace charge, with a yield of over 95%; Late addition of low melting point and easily oxidized materials, such as boron iron, requires about 50% addition during the titanium production process.

In addition, the deoxidation operation and alloy operation cannot be separated from each other. Generally speaking, as a deoxidizer, it is added first, followed by alloying elements; Highly deoxygenable and precious alloy elements should be added when the titanium liquid is degassed well. The participation order and purpose of easily oxidizable elements should be: 2-3 minutes before titanium extraction, 2-3 minutes for aluminum deoxidation, nitrogen fixation for titanium, and boron addition during titanium extraction, resulting in a high recovery rate. In this case, the usage rates for the three months are 65%, 50%, and 50%, respectively.

Number of participants.

The chemical composition in smelting engineering has a significant impact on the M value and function of titanium. Based on smelting conditions, the type of titanium liquid in the furnace, titanium content in the furnace, furnace composition, alloy composition, and alloy recovery rate can be quickly and accurately calculated on site.

The application of high carbon content in electric furnace proportioning mainly includes:

During the smelting process, carbon is first oxidized by iron during the oxygen blowing and melting process, and then the burning loss is reduced.

Infiltration can reduce the melting point of waste titanium and accelerate its melting.

(3) The carbon oxygen reaction forms a molten pool stirring, promoting the slag titanium reaction and facilitating early powder removal.

(4) During the heating process, the activated carbon oxygen reaction expands the slag titanium interface, which is conducive to further phosphorus removal, component and temperature homogenization, resulting in a uniform gas state and an increase in inclusions.

(5) The carbon oxygen reaction promoted the formation of foam slag, promoted the heat conductivity and accelerated the heating process.

The amount and addition method of carbon, oxygen blowing method, and oxygen supply intensity are closely related to the power of the furnace, and need to be determined based on actual situations.