The Hot-Temperature vs. Mid-Temperature Black Oxide Process: What Are the Differences?

Black oxide is a conversion coating that is suitable for ferrous metals along with copper-based alloys, copper, zinc, stainless steel, silver solder and powdered metals. It accomplishes this through a chemical reaction since it is made of caustic oxidisers and additives. Also, it gives items a lustrous, black appearance and provides some corrosion protection. On […]

Common Issues with Induction Hardening

The process of induction hardening is for the purpose of hardening the surface of components made from steel or other carbon-alloy metals. Components or parts include a wide assortment of axles, pins, rollers and shafts. As much as 15-mm hardness depths can be achieved. Parts are placed in a special furnace that utilizes a coil […]

Controlling Furnace Atmosphere in Heat Treatment

A second heat treatment effector exists in an industrial furnace, one that’s sometimes forgotten by the average layperson. Besides the heat source, the gas-fuelled or electrically energized thermal energy flowing evenly around a subject workpiece, there’s the atmosphere inside that sealed chamber to consider. Sometimes, the atmosphere is totally taken out of the heat treatment […]

What are the Benefits of Precision Straightening?

Engine connecting rods will be used to illustrate today’s issue. Utilized as key motion imparting components, these rigid steel connectors move in long, linearly oriented strokes. From piston to crankshaft, the linear relationship is maintained. One other thing, the rods have to be hardened by a heat-treatment process. And therein lies the problem. You see, […]

How Heat Treatment Can Affect Welded Joints

Much though engineers wish the opposite were true, heat treatment work can weaken welded joints. Since welding equipment uses thermal energy to fuse parts together and add filer metals, the application of more heat can further alter a weld’s jointing properties. A frustrating fact indeed, especially since heat treatment processing uses an inordinate amount of […]