A new process called RP Tempering speeds up processing time, reduces costs, and produces a stronger RP part.
RP Tempering was presented by PAR3 Technologies Inc. engineer Earl Dunlap. "The process, he says, spans three technologies to include Proto-Plasma-Rx™ and Hybrid-Temp-Rx™, depending on the mechanical property results you want to achieve". RP Tempering enhances impact strength, controls flexural modulus, improves torque and adds shelf life. Proto-Plasma-Rx will enhance temperature resistance, chemical resistance, and flexural modulus and produce minor improvements in impact, torque and other mechanical properties. Hybrid-Temp-Rx is a combination of both RP Tempering and Proto-Plasma-Rx."
The technique creates internal plumbing in the shape of a sphere, which is engineered into the part design 3D files. Directions of the internal plumbing tubes are dictated by the parts design and required specifications. Stresses within the walls of the RP part can be redirected or even controlled to achieve the desired results.
"The secondary process, Dunlap says, is to fill the internal plumbing tubes with RP Tempering compound. When the compound fills the plumbing tubes, a chemical reaction on a nanofusion level results. Nano-sized strands create branches extending from the internal plumbing spheres, increasing impact strength by 13 times while controlling the flex modulus."
"RP Tempering adds only about eight percent to the cost of producing a rapid prototype, and is completed quickly, increasing the strength of an RP part while controlling its flex modulus. This means the strength of the RP part is increased while keeping other mechanical properties the same. It can also give your part increased flex. When RP Tempering is used, the thermo-mechanical properties can be enhanced to include heat resistance of over 300° F (148° C)", according to Dunlap.
Cured resins may weaken with age but parts that have undergone RP tempering can withstand drops without damage. This technology will work on most composites and with any RP resins and/or systems offered on the market today. To summarize, parts that have undergone RP Tempering can achieve enhanced physical, mechanical and thermo characteristics.
Figure 1: Applying Proto-
Figure 2: Nano-carbon
Figure 3: Improved flexural
Figure 4: Enhanced stresses
Figure 5: Improvement in
Figure 6: Add extra strength
General Guide to RP Tempering Technologies
You have many options at your disposal when you use all the RP Tempering Technologies. You need to determine what are the critical functions of the part which will lead you to what RP Tempering Technologies you need to use. Here are some examples:
Questions and Answers for RP Tempering Applications:
RP Tempering Process
Before the part build apply the patented 3D CAD engineering technique. Mapping of the location of the required tunneling or other geometries may be required if the CAD person is not trained. After build apply the appropriate compounds suggested. Detailed information about other options is available but will be supplied only to RP Tempering licensees.