Metal Casting Supplier
Therma Fab Inc. has been making metal parts for decades. They’ve got a team of really great people who know all the tricks to make the best metal castings. Our skilled mechanics diligently are trained and certified to work on the most important projects.
TFI | Top-Notch Quality
Therma Fab Inc. doesn’t mess around when it comes to quality. They do their best to make sure every single cast metal part they make is exactly as designed. They check and double-check everything to make sure it’s just right.
Therma Fab Is Always Here To Help
Whenever you need them, Therma Fab Inc. is there for you. They’re super friendly and always ready to answer any questions you have. It’s like having your own team of metal casting specialists.
Looking for a quote? Call 814-827-9455 or email office@thermafab.com.
Check out our website: https://www.thermafab.com/
Tuyere Investment Casting Specialist
Tuyere Investment Castings
Tuyeres have a variety of uses in the petrochemical and industrial fields. They are used to harness or extract specific particles or gasses from some processes. Thermafab specializes in creating custom tuyeres from initial concepts and engineering, to AutoCAD drawings, to 3D printing. Thermafab is ready to explore your project.
Tuyere Examples | Therma Fab Inc.
Below are some photos of the investment casting process where a 3D printed core is made in accordance with your drawing. Our foundry then builds the investment casting trees prior to the metal pouring. Once the alloy metal is poured, you are left with the cadillac of castings. Intricate shapes, crisp lines, and tight tolerances are some of the main benefits of this elaborate casting process.
Different Metal Tuyeres
Metal alloys can include HP, HN, HK, and other variations of stainless steel that have various chemical compositions that include nickel,chromium, and manganese. Once the Tuyeres are cast, our expert machine shop machines threads and holes to specs. Thermafab has the ability to make very small metal castings as well has large metal castings.
Looking for a quote? Call 814-827-9455 or email office@thermafab.com.
Check out our website: https://www.thermafab.com/
Machined Investment Casting
Precision of Investment Castings
Precision is a hallmark of investment casting, particularly in the realm of precision stainless steel castings, where high tolerance levels are achieved, minimizing the need for additional machining. The method excels in producing near-net shape products, surpassing the capabilities of other casting processes.
Surface Finishing
Surface finish is another area where investment casting shines, providing superior results compared to alternative methods. The precise tolerance levels contribute to a refined surface finish, allowing for the inclusion of logos or text on exteriors, enhancing the overall value of the products.
Quality Control
The quality of products manufactured through investment casting is superior, with minimal casting defects and a low rejection rate. Rigorous inspections are conducted to ensure customer satisfaction and product excellence
Advantages of Investment Casting
One of the key advantages is the cost-effectiveness of manufacturing with investment casting. The near-net shape reduces the need for extensive machining, minimizing material wastage. Additionally, the equipment required is less expensive and poses fewer safety concerns, resulting in a competitive manufacturing price.
Vast Use of Materials
The method supports a wide variety of materials, allowing for the production of alloys such as stainless steel, alloy steel, heat-resistant alloy, copper alloy, carbon steel, titanium alloy, aluminum alloy, ductile iron, bearing alloy, and permanent magnet alloy through precision casting.
Investment casting ensures repeatability, maintaining superior quality from one casting to another. This reliability contributes to a cost-effective and dependable manufacturing technique.
Investment casting, also known as the lost wax casting method, stands out as a primary process for manufacturing metal parts due to its numerous advantages. This technique offers the flexibility of design, making it ideal for complex parts with intricate internal shapes. The freedom to choose from various materials, including cast iron, aluminum alloy, and non-ferrous alloys, further enhances its appeal, with a preference for high-temperature alloys.
Size and Sustainability
From an environmental standpoint, investment casting promotes sustainability. The reclaiming of wax and metal alloy reduces overall waste in production, aligning with responsible environmental practices. The creation of near-net shapes further enhances the cost-effectiveness and appropriateness of this technique.
Lastly, investment casting caters to a broad size range, accommodating small and large casts. Whether dealing with miniature and intricate parts or larger components weighing up to 50 pounds, investment casting proves versatile in meeting diverse manufacturing needs.
Investment Casting Specialist
Investment casting, also known as lost-wax casting, is the cadillac of metal casting. The multi-step process produces cast metal parts with intricate shapes, smooth, non-porous surface finish, and very precise dimensional tolerances. The process Therma Fab uses involves creating a wax pattern or model of the desired part, coating it with a refractory material to form a mold, and then removing the wax to leave a cavity into which molten metal is poured.
Here's a step-by-step overview of the investment casting process Therma Fab can do for you:
Pattern Creation: A pattern or replica of the desired part is created using wax or another material that can be melted away. There is also a gate attachment to the part that is later removed (after its used to let metal flow into the mold).
Assembly: These wax patterns are attached to a central wax sprue to form a tree-like assembly, which will eventually allow the molten metal to flow through the entire mold.
De-waxing: Once the ceramic shell is sufficiently thick and dry, the entire assembly is heated in an autoclave or furnace to melt and remove the wax (hence the term "lost-wax casting"), leaving behind a cavity in the shape of the desired part.
Burnout: After the wax is removed, the ceramic shell mold is fired at a higher temperature to further strengthen it and remove any residual wax or moisture.
Casting: The ceramic mold is preheated, and molten metal is poured into the cavity created by the wax pattern. The metal fills the cavity and takes the shape of the original wax pattern.
Cooling and Solidification: After the molten metal is poured, it is allowed to cool and solidify within the ceramic mold.
Shell Removal and Finishing: Once the metal has solidified, the ceramic shell is broken away or removed using various methods, revealing the metal casting. The casting may undergo additional processes such as machining, polishing, or heat treatment to achieve the desired final shape, dimensions, and surface finish.
Investment casting is often chosen for parts that require complex geometries, high precision, intricate details, or a superior surface finish. Therma Fab can help you create your investment castings today!
Rabble Teeth
Thermafab specializes in the engineering and production of rabble arms and rabble teeth. These arms and teeth are used in hearth furnaces, roasters, cylindrical grinders and trash incinerators. The arms are between 6-10 feet long and consist of a rabble head and a pipe-like body. The rabble heads are inserted into a center shaft that rotates around a pole to grind, mix, and stir. Rabble teeth are attached to the underside of the arms, creating a comb like structure that can help the mixing process.
Our reactor arms are one single casting, with the head, the arm and the rabble teeth tracks cast as one continuous piece. Our prime rabble arms have a rabble head casting that accepts a long thick pipe that is welded to the head for support. These arms can be made out of iron, stainless steel, and other specialty alloys like HD, HK, HN, HH, etc. We have customers that order hundreds of arms and thousands of rabble teeth.
Looking for a quote? Call 814-827-9455 Email: office@thermafab.com.
Website: https://www.thermafab.com/
What are Observation Peep Doors?
Learn how we produce cast iron observation doors for companies all over the world.
For over 30 years, Therma-Fab has specialized in the production of cast iron observation doors (often called sight doors or peep doors) for uses in the petrochemical industry.
Observation peep doors allow visual inspection of the contents of large, high-temperature, vessels, tanks, incinerators (furnaces), pipelines, and other systems without the need for disassembly, breaking down, or opening the equipment.
These peep doors are typically made of durable materials such as tempered glass or polycarbonate and are designed to withstand the harsh and corrosive environments found in the petrochemical industry.
Sight doors are useful for a variety of purposes, such as checking the level of liquid in a tank, monitoring the flow of fluids through a pipeline, and inspecting the condition of internal equipment components.
In addition to their visual inspection capabilities, Therma-Fab’s observation peep doors can also be equipped with additional features such as lighting, heating, and wipers to improve visibility and facilitate inspections in difficult operating conditions.
Overall, observation peep doors play an important role in the safe and efficient operation of petrochemical facilities by allowing operators to visually monitor equipment and detect potential issues before they become more serious problems. Therma-Fab provides these doors to companies and industries all over the world. Need a quote?
What do Rabble Arms actually do?
It all begins with an idea.
In the context of hearth furnaces, "metal rabble arms" refer to a type of cast metal pole-like propellers attached to a central spine shaft that are used to move and agitate the material being processed inside the furnace. These cylinder funnel-looking hearth furnaces are used for a variety of industrial processes such as refining, smelting, and heat treating of metals.
The metal rabble arms are typically long, sturdy cast metal rods or arms that are inserted into the furnace and used to stir or rake the material being heated. The arms are usually made of heat-resistant materials such as steel, specifically in the harder alloys like HK and HP, which contain alloys like chromium and nickel.
Our rabble arms have a socket end that gets inserted in the furnaces center shaft. These sockets heads are either part of the original pattern or are welded on, as shown below. This socket also is equipped with an air hole venting system where cool air can be forced in the rabble arm to help cool the arm and prevent warping.
Therma-fab welding a socket head to a cast metal hearth furnace rabble arm.
The purpose of the rabble arms is to ensure that the material being heated is evenly mixed and that any impurities or gases are removed from the metal. They also help to prevent the material from sticking to the furnace walls or floor, which could cause blockages and impede the heating process.
Rabble arms also have rabble teeth attached to the underside of the pole-like arm. The square teeth or scrappers have a comb-like pattern that help stirs up the material beneath it. Our rabble teeth often have an angular shape (in or out) that help stir the materials inward and outward as it travels down the furnace, helping to evenly distribute the materials on the hearth and prevent them from sticking together.
Therma-Fab installing a rabble tooth or scraper on the track on a rabble arm
Overall, metal rabble arms are an important component of many hearth furnaces, allowing for efficient and effective processing of various types of metals.
Rabble arms are an important component of rotary hearth systems used in various industries, including the iron and steel industry. These systems are used for heating and processing materials such as iron ore, pellets, coal, and other raw materials, producing products like activated carbon, which has thousand of uses.
The rabble arms in a rotary hearth system are essentially rotating arms revolving around a center spine shaft that are used to move and mix the materials in the hearth. They are typically equipped with paddles, often called teeth or scrapers, that help to evenly distribute the materials on the hearth and prevent them from sticking together.
The rotary hearth system operates by slowly rotating the hearth while the rabble arms move the materials across the surface. This movement helps to ensure that the materials are evenly heated and processed, resulting in a more consistent and high-quality end product.
The design of the rabble arms in a rotary hearth system can vary depending on the specific application and the type of materials being processed. Some systems may use multiple sets of rabble arms, typically 5 arms per layer, to ensure maximum efficiency and uniformity, as shown below.
