with alloy steel heat treated in either oil quench harden and temper furnaces or in salt quench austemper furnaces. The same properties can be achieved with 400 series stainless...springs The heat treatment of springs falls into four processes in two categories of material selection. The appropriate spring strength and ductility properties can be achieved... steel bright hardened in hydrogen atmosphere continuous belt furnaces for small parts and in vacuum furnaces for large parts. ...

investment castings Investment castings are heat treated in batch or continuous atmosphere furnaces. Protective atmospheres are beneficial for maintaining the surface quality... of the smaller precision cast parts. Ferrous heat treating applications typically include oil quench hardening, normalizing, annealing, and carbon restoration. Atmosphere heat... are age hardened in atmosphere and non-atmosphere batch furnaces and in vacuum furnaces. Non-atmosphere heat treatments include tempering, stress relief, and sub-critical annealing. Finishing treatments include glass bead and steel shot blast. ...

hardened in batch vacuum furnaces or in continuous hydrogen atmosphere belt furnaces. The advantage of bright hardening is the production of a heat treated part of very high surface quality with minimal additional finishing required. ... made of air hardening alloys are typically bright hardened in batch vacuum furnaces. Small investment castings, stampings, springs, and screw machine parts are typically bright...

requiring special handling in batch furnace fixtures. PMI employs 50 people and utilizes 20 heat treating furnaces in the production of two million pounds per month of heat treated work...Pennsylvania Metallurgical, Inc. Commercial Heat Treaters Pennsylvania Metallurgical Inc (PMI) is a full service metal heat treating company located in Bethlehem, Pennsylvania. We.... as a subsidiary. Vacu-Braze specializes in small lot vacuum heat treating and brazing services, providing a high level of expertise with overnight delivery on dies, tooling...

be performed in special fixtures to straighten parts castings and springs that have been deformed by production or other heat treating processes. ... (Rc 35-55). Tempering temperatures are usually in the range of 350 to 1200 oF and the process is usually performed in air in gas-fired or electric furnaces. Tempering can...