网页At room temperature, the iron is hard and brittle and is called white iron because the sur-face of a fractured piece of iron is white and (somewhat) lustrous. Upon slow cooling of a 3% carbon cast iron, austenite forms from the melt, but eutectic freezing is now slow enough so the products of the eutectic reaction are.
Induction hardening of cast irons - Thermal Processing
网页2018年7月15日 · The graphite particles appear in cast irons in different forms ranging from flakes and clumps to spheroids. Gray, ductile (nodular), and, to a lesser extent, the malleable and compacted graphite irons are four groups of cast irons that more frequently undergo induction hardening.
Heat Treatment of Grey Irons | Cast Irons | Metallurgy
网页Hardening and tempering of grey iron aims to improve the mechanical properties such as hardness, wear-resistance (increases five times of cast-state), and some tensile strength, hi hardening, the castings are heated to a high temperature of about 850°-885°C (around 95°C above the calculated A 1 transformation temperature from equation 15.2 ...
Types of Heat Treatment for Cast Iron - Iron foundry
网页The types of heat treatments for cast irons involve stress relief, annealing, normalizing and hardening (quench and temper). In each of these processes, it is important to understand the materials' response to its heat-treat process …
Chapter 11: Heat Treatment of Cast Irons - ASM Digital Library
网页Like steel, heat treatment of cast iron includes stress relieving, annealing, normalizing, through hardening, and surface hardening. This chapter introduces solid-state heat treatment of iron castings, covering general considerations for heat treatment and discussing the processes, advantages, and disadvantages of heat treatment of cast iron.
Heat Treatment of Ductile Iron | Cast Iron Science and …
网页It presents recommended practices for annealing ductile iron castings for different alloy contents and for castings with and without eutectic carbides. The article discusses the induction surface hardening and remelt hardening of ductile iron. It concludes with information on the effect of heat treatment on fatigue strength of ductile iron.
Introduction to Cast Iron Heat Treatment | Heat Treating of Irons …
网页This article introduces the general principles and applications of heat treatment to iron castings. It provides a detailed discussion on the heat treatment processes, namely, stress relieving, annealing, normalizing, throughhardening, and surface hardening for …
A Review on Heat Treatment of Cast Iron: Phase Evolution and …
网页2022年10月13日 · The isothermal heat treatment process has been identified as a unique process of fabricating exceptional graphite cast iron due to its remarkable mechanical properties, such as excellent machinability, toughness, and …
Cryogen and heat treatments of boron-lacquered high-strength cast iron …
网页2023年8月15日 · Boron-microalloyed high-strength cast iron with less than 0.003 % S are characterized by high crack resistance. • Direct hardening of high-strength cast iron microalloyed with boron is an effective method of hardening the metal matrix • Cryogenic treatment of the cast iron samples secured a complete conversion of …
Induction Hardening Process | AHT - ahtcorp.com
网页UltraGlow® Induction Hardening is a form of heat treatment in which a steel or cast iron part is heated by electromagnetic induction, immediately followed by rapid cooling (quenching). Upon quenching, the metal undergoes martensitic transformation, significantly increasing its …