Investment casting uses an expendable pattern
(almost always of wax) to convert molten metal in a single operation to precision engineered components with minimum wastage of material, energy and subsequent machining.
The implant SLA model served as the casting pattern for the construction of a silicon mould and the subsequent casting of an identical wax model, which was finally used as an expendable pattern
for the production of the titanium part by investment casting.
The investment casting process uses an expendable pattern
made of wax, which is an exact copy of the component to be cast.
This is an extensive revision of Expendable Pattern
Casting, with new information on the advancements and discoveries that were made since Raymond Monroe's book was published in 1992.
- 1998 $5.00 $5.00 ITEM # LIST FC7507 $40.00 FC8400 $40.00 FC9500 $40.00 FC9800 $60.00 FC9801 $5.00 General Metalcasting ITEM # ITEM NAME CORP PERS GM7607 Guide to Sand Additives $10.00 $15.00 GM8300 Key Minimum-Maximum Standards Process Control System, The $8.00 $8.00 GM8702 Casting Buyer's Guide $10.00 $15.00 GM8802 Graphite Flotation in Ductile Iron $2.00 $2.00 GM9101 Application of Robotics and Automation to the Foundry Industry: 57th World Conf - 1990 $10.00 $10.00 GM9103 Expendable Pattern
Casting Conf.-1991 $5.00 $5.00 GM9200 Expendable Pattern
Casting $20.00 $30.00 GM9201 Foundry Binders and Environment: 58th World Foundry Conf.
The key element that makes RP and investment casting compatible is that investment casting uses an expendable pattern
(wax or foam), and RP can produce an expendable pattern
directly from a database without the need for tooling [ILLUSTRATION FOR FIGURE 3 OMITTED].
The widespread use of lost foam (LF), also known as expendable pattern
casting, according to Bruce McMellon, Vulcan Engineering Co., has been delayed only by two things: "The stubbornness and ignorance that all new processes face, and lack of information passed back and forth by users."
In the demand for improved quality while casting with an environmental conscience, expendable pattern
casting (EPC) has intrigued progressive foundrymen since its birth 30-some years ago.
With a theme of "Managing the Technology," more than 150 foundrymen conferred in Birmingham, Alabama, on September 21-23 to share technological advances and experiences in improving the expendable pattern
casting (EPC) process.
Several new methods for improving the expendable pattern
casting (EPC) process were presented at the Congress' heavily attended EPC sessions.
The last few years have seen a great deal of commercial and technical activity in the field of expendable pattern
The American Foundrymen's Society research project on expendable pattern
casting (EPC) that began in 1989 is a good example of the benefits of long-term R&D involving: financing, technology development and technology application and transfer.