Hardening and Tempering of Fasteners Today’s tight quality requirements together with economic constraints have led to the advancement of fastener-furnace technology, with belt-type furnaces resulting as the dominant design. This article generally describes the process of hardening and tempering and the plant technology commonly employed in the modern fastener industry. Emphasis is put on precise process monitoring of the bulk flow with regard to the uniform final properties like tensile strength and toughness of each fastener.
Advances in Martensitic Stainless Processing New developments in welding and thermal processing are enabling the cost-effective use of martensitic stainless steels in exciting new applications. These advancements, coupled with an increased demand for high-strength, lightweight structures, are positioning martensitic stainless as an attractive alternative to costly high-alloy materials.
by DanielCodd, P.E.
Controlling Properties of Sintered-Steel P/M Components Using Atmosphere The composition of the sintering atmosphere is often overlooked as a variable that can optimize the sintered-steel properties of iron-carbon P/M components. This article will examine the effects of CO-containing atmospheres versus non-CO atmospheres in terms of hardness, carbon control and dimensional changes.
by John J.Dwyer Jr. ThomasPhillips ZbigniewZurecki
Get Involved and Make a Difference As I write this month’s editorial, snow is gently falling for the first time this season. It is a reminder that the holidays are approaching, and a new year is just around the corner. How was 2008 for you, and what will you do with 2009?
by ReedMiller
Illegal Immigration – A National Challenge During the recent Presidential campaign, a major source of public frustration was avoided as carefully as possible. That was the subject of the illegal-immigrant population that created an outburst of ire directed at Congress early this year for attempts to assure amnesty for illegal aliens, a blatant attempt to curry favor among a growing voter bloc.
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