The winning entries in the Metal Powder Industry Federation's 2004 design competition were a diverse lot that included components used in automobiles and light trucks, industrial pumps, power tools, and biomedical products. Made by conventional press and sinter technology, warm compaction, and metal injection molding, this year's winners replaced parts once made by die casting, investment casting, machining, and forging. Here's a closer look at some of the grand prize winners. For more info on the competition and additional winning parts, visit www.mpif.org.
Ferrous components Innovative tooling helped ASCO Sintering Company and Deltran Inc. produce this four-part gear assembly, which earned the ferrous grand prize. Consisting of an armature, rotor blank, bearing, and pinion gear, the assembly operates in a motor drive for automatic sliding minivan doors and tailgates. Made from phosphorous iron, the parts have a density of 7.0 g/cm³, an ultimate tensile strength of 45,000 psi, and a yield strength of 32,000 psi. The parts are made to a net shape, with the exception of a turning operation on the rotor hub.
Stainless steel Webster-Hoff Corp. took top honors in the stainless steel category for a complex pump latch it makes for Phillips Plastics. This 316-stainless-steel latch is used at the end of a door handle for a medical infusion pump. The part is produced to a density of 6.7 g/cm³ and has an ultimate tensile strength of 65,000 psi, a yield strength of 42,000 psi, and an elongation of 11.5 percent. This powder metal latch replaces a die cast handle that was fitted to a stainless steel latch with dowel pins and screws. Annual cost savings from the switch come to more than $100,000.
Metal injection molding Parmatech Corporation and its customer, SurgRx Inc., won the injection-molding prize for a high compression jaw used in laparoscopic vessel fusion procedures. The jaw design consists of top and bottom jaw halves as well as an anchor component and I-beam-shaped blade. All of these parts feature thin-walls and complex geometries, making them tough to manufacture by any other technology. Made from 17-4PH metal powder, all four parts have as-sintered densities greater than 7.6 g/cm³. And every bit of that density is important given the high compression forces the components have to withstand during use.
Innovative functional assembly Capstan Atlantic and Delphi Automotive won the grand prize in this category for a planetary gear set used in an automatic minivan rear door latch. To make the set's carrier plate, four planetary pinions, ring gear, and sun gear, Capstan employs proprietary tooling methods capable of producing high-precision involute gear teeth. It also sinter-hardens the gears for wear resistance and strength and treats them with a proprietary plating process. This plating requires no resin impregnation for porosity sealing and allows the gears to withstand a salt spray test of more than 200 hours. The planetary and ring gears are made to a density of 6.95 g/cm³ and have a tensile strength of 100,000 psi, and a yield strength of 90,000 psi. The spur sun gear has a tensile strength of 120,000 psi, a yield strength of 105,000 psi, and fatigue limit of 35,000 psi.
Truchard will be presented the award at the 2014 Golden Mousetrap Awards ceremony during the co-located events Pacific Design & Manufacturing, MD&M West, WestPack, PLASTEC West, Electronics West, ATX West, and AeroCon.
In a bid to boost the viability of lithium-based electric car batteries, a team at Lawrence Berkeley National Laboratory has developed a chemistry that could possibly double an EV’s driving range while cutting its battery cost in half.
For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This discussion will examine what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.