Master Alloy Binder for Titanium Melt Homogeneity
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Solution Overview
Problem
Conventional methods for adding alloying elements, such as oxygen, to metal melts, particularly titanium alloys, are inefficient and unpredictable, leading to inconsistent elemental chemistry in the final product due to incomplete incorporation and segregation issues.
Innovation Solution
The use of formed articles comprising particles of master alloy bound by a binder material that decomposes at high temperatures, ensuring homogeneous incorporation into the metal melt, such as titanium dioxide particles bound with organic polymers like ethylene vinyl acetate or low-density polyethylene, which release the master alloy particles when heated above 500°F.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If loose powdered titanium dioxide master alloy is mixed with titanium sponge and cobble, then the oxygen content can be increased, but the powder segregates and is carried away by air movement, leading to inconsistent and unpredictable loss
Solution Approach 1:
The patent applies composite materials by combining titanium dioxide master alloy particles with a binder material to form a composite article. This composite structure prevents the titanium dioxide powder from segregating and being carried away by air movement, while still allowing the oxygen to be incorporated into the melt when the binder decomposes at high temperature.
Solution Approach 2:
The patent utilizes parameter changes by selecting a binder material with a decomposition temperature lower than the melting point of titanium but higher than 500°F. This temperature parameter differentiation ensures the binder decomposes and releases the master alloy particles into the melt at the appropriate time, achieving reliable and consistent oxygen addition.
2Quantity of substance
If compacted titanium sponge with powdered titanium dioxide master alloy is used, then higher oxygen levels can be achieved, but the process requires significant preparation time and additional cost
Solution Approach 1:
The patent merges the master alloy particles with the binder material in a single mixing step to create the formed article. This eliminates the need for separate compaction processes, reducing preparation time and simplifying the workflow while maintaining the ability to achieve higher oxygen levels.
Solution Approach 2:
The patent changes the physical form parameter from loose powder to a formed article with controlled decomposition. This allows the material to be added directly to the melt without extensive preparation, significantly reducing the time and cost associated with traditional compaction methods.
3Quantity of substance
If more powdered titanium dioxide is added to coat surfaces, then oxygen addition increases, but the excess powder fails to stick and segregates from the starting materials
Solution Approach 1:
The patent creates a composite material where titanium dioxide master alloy particles are bound within a binder matrix. This composite structure ensures that all titanium dioxide remains attached and distributed uniformly, preventing segregation and maintaining homogeneity even when larger quantities are used for oxygen addition.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach ensures consistent and predictable alloying additions, improving the homogeneity and elemental composition of the final alloy product by ensuring complete incorporation and dissolution of the master alloy particles during the melting process.
Implementation Method 1
The binder material change form and frees the master alloy particles when the formed article is heated to a predetermined temperature
Implementation Method 2
the actual amount of the master alloy addition that melts and becomes homogenously incorporated into the melt
Implementation Method 3
As the titanium dioxide master alloy dissolves and becomes incorporated into the melt
Data Source
AI summary
A formed article for making alloying additions to metal melts includes particles of at least one master alloy and a binder material binding the particles of the master alloy in the formed article. The binder material changes form and frees the master alloy particles when the formed article is heated to a predetermined temperature, preferably a temperature greater than 500° F. A method for making an alloy also is provided. The method includes preparing a melt comprising a predetermined quantity of a master alloy wherein the master alloy is added to the melt or the melt starting materials in the form of particles of the master alloy bound into at least one formed article by a binder material that decomposes at a predetermined temperature, preferably a temperature greater than 500° F., and releases the particles of master alloy.