Tokyo, February 3, 2009 - Mitsubishi Heavy Industries, Ltd. (MHI) has developed the "PD23", a new cylindrical grinding machine for processing cylindrically shaped workpieces such as shafts. The company will commence marketing on February 5. In response to the current trend toward downsizing of machinery parts, the PD23 is capable of processing small, palm-size workpieces. For easier operation, the machine itself has also been downsized and the height of the workpiece center from the floor has been reduced to one meter. The company anticipates a wide range of applications, including processing of small parts for automobile drive trains, parts for air-conditioner compressors, and hydraulic piston parts.

A Guide to Aluminum Welding:

Follow these rules for selecting welding equipment, preparing base materials, applying proper technique, and visually inspecting weldments to ensure high-quality gas-metal-and gas tungsten-arc welds on aluminum alloys.
Even for those experienced in welding steels, welding aluminum alloys can present quite a challenge. Higher thermal conductivity and low melting point of aluminum alloys can easily lead to burnthrough unless welders follow prescribed procedures.