We're flipping through Heat Treat Today's technical articles today to highlight four heat treat-related processes: quenching, sintering, nitriding, parts cleaning. Read our top picks of technical articles from these categories like a case study that pits pressure and velocity against one another and the future of powder metallurgy in heat treat.
QUENCHING: Vacuum Gas Cooling: Pressure vs. Velocity, Part 1 of 2
Is it the size of the furnace that effects the rate of cooling or something else? This case study pits two HPGQ furnaces against one another to determine what matters more in vacuum gas cooling rate: pressure of velocity.
"This is primarily due to the temperature differentials during cooling. Gas quenching cools strictly by convection. However, the three distinct phases of liquid quenching (vapor, vapor transport, and convection) impart undue stress into the part causing more distortion."
SINTERING & POWDER METALLURGY: Heat Treat Radio: A Discussion with Harb Nayar, Sintering Guru
What does a cross between powder metallurgy and heat treating look like? Our friend and sintering expert Harb Nayar shares his knowledge. Read the transcript of this interview or listen to the podcast!
"There is no doubt that PM (powder metallurgy) is a very, very unique manufacturing process to make metallic products. If I have to pick one thing that I would say which is almost becoming a destructive technology in the manufacturing of complex shapes (metallic products), that would be additive manufacturing using metal powders to start with."
NITRIDING: Pulse Plasma Nitriding Improves Surface Treatment, Wear Resistance, Fatigue and Material Performance
Pulse plasma nitriding offers many benefits as an alternative case hardening process that you may not know much about. Explore the advantages the process has to article in this technical article.
"Each process has advantages and disadvantages, but for those seeking more precise control of the diffusion layer formation, depth of case hardening, and preservation of component dimensions, are increasingly turning to plasma nitriding."
PARTS CLEANING: Parts Cleaning: What the Experts Are Saying
It may be easier to skip -- cheaper too! -- but what are you missing out on if you do decide to skip cleaning heat treated parts? When does it matter the most? 7 experts weigh in.
"What role does parts cleaning play in the heat treat process and component quality? What is the cost or consequence for heat treating when cleaning is not done correctly? Any anecdotes you can share with us?"
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