Benefit: Increased Component Complexity
Main Forming Process: Metal Injection Moulding
End Use Sector: Consumer Goods, Domestic Tools
Material: Ferrous
Finishing: MIM-Receptor: 1. case hardening, 2. Laser welding to pusher Tube, 3. Coating MIM-Slide: 1. Case hardening, 2. Coating.
Requirements
The assembly holds a jigsaw blade while the pusher Tube is moved up and down by the jigsaw’s motor. Potential production methods were machining of steel, Al- and Zn-die casting, steel precision casting and MIM.
Benefits
While machined steel gave the required precision and strength but was too costly. With Zn- and Al-die casting cost was favourable but strength and/ or precision was inadequate. Precision casting was able to meet the strength and cost requirements but could not meet the precision requirement. In the end only MIM met all the requirements.
Component Specification
Density of MIM Components:
> 7.8 g/cm3
MIM-Receptor:
HV1 450+/-50, C-content 0.2-0.3%, through hardened
MIM-Slide:
HV1 680 +/-70, case depth 0.5+/-0.1mm
Relative Density:
MIM-Receptor: > 99% MIM-Slide: > 99%