Aluminum and aluminum alloys are among the most commonly used metals for investment casting; almost any castable metal may be used such as copper, brass or steel. The main disadvantage is that investment castings tend to be more expensive per unit. However, the equipment cost is generally lower and the parts require little machining or finishing after they are cast. Read More…
Leading Manufacturers
Ferralloy Inc.
Cleveland, OH | 440-250-1900For over 30 years, we have provided metal forged products for a wide variety of industries, including the aerospace, military, food service, medical, and automotive industries. Our customers know they can trust our forgings for quality and affordability. We will never try to make you pay more than you should for our products. Contact us by phone or email to find out more!
Rimer Enterprises, Inc.
Waterville, OH | 419-878-8156Since 1944 we have been driven to remain a cut above the competition in investment castings and everything we do. We have our own tooling shop filled with state-of-the-art testing machines. We ensure perfect results every time. It is our goal to establish lifelong relationships with our customers that benefit us both. Contact us for more info today!
Engineered Precision Casting Company, Inc.
Middletown, NJ | 732-671-2424At Engineered Precision Casting, we are a committed leading manufacturer of investment castings and more. We have been faithfully serving a variety of industries such as aerospace, automotive, and tool and die. We are an AS1900 certified company. For a complete list of our products and service, visit our website.
The Casting Company, Inc.
Indianapolis, IN | 317-721-7303We are one of the leading providers of investment castings in the industry today. We have years of experience manufacturing quality castings including wax casting, centrifugal casting, and precision casting. Our goal is to ensure that your needs are met with our capabilities and services. We believe in giving the customers what they ask for each time. Contact us for details!
Waltek Inc.
Ramsey, MN | 800-937-9496Waltek produces world class investment castings to a diverse global market. We offer design review, prototyping, assembly, testing and innovation combined with prompt customer service and on time delivery in addition to the cost savings afforded by investment casting. A leader in the production of precision products through wax casting, Waltek your source for top quality investment cast products.
Aluminum Investment Castings - Ferralloy Inc.Investment casting is generally used for small precision parts that would be very difficult to produce through any other method. Aluminum castings can have walls as thin as half a millimeter. They range from a fraction of an ounce to over 1,000 pounds though most castings are 15 pounds or less.
Investment castings have been used in jewelry making for centuries but are now finding many more uses including precision instruments, engine parts, and medical equipment. Because of the wide application of manufactured metal parts, aluminum investment castings are found in the aerospace, automotive, military, dental, mining, food processing, sports, and telecommunication industries.
Aluminum Investment Castings - Ferralloy Inc.The process begins by creating a wax pattern called the master die by carving or by injection molding. The wax pattern may be assembled with other wax patterns and is then attached to a wax sprue, or rod, so they can all be cast at once. As many as several hundred patterns may be assembled around the sprue.
Once firmly attached, a ceramic slurry called the investment is applied through two main methods. In the first, the cluster of patterns is dipped into the investment multiple times and removed to achieve a uniform surface and thickness. The other method is to place the cluster in a flask and fill it with the investment, vibrating it to allow pockets of air to escape and to ensure that all the spaces inside are filled with the investment.
Drying is the next step and can be accelerated by placing the assembly in a vacuum or by a fan. Once dry, the assembly is turned upside down and placed in a furnace or oven. The wax melts and drips out or is vaporized. The mold is heated further to remove any moisture or wax residue; this step in the process is called the burnout. Liquid aluminum is poured into the space where the wax used to be, drawn in by gravity, vacuum, positive air pressure, or centrifugal casting methods. Once cooled, the hardened investment shell is hammered, vibrated, dissolved or sand- or water-blasted off, releasing the aluminum part inside.