Assessing Wear Performance of Two High-carbon Hadfield Steels Through Field Tests in the Mining Industry

Abstract

Hadfield steels are widely used in the production of liners for rock crushing applications due to their good wear resistance and high toughness. Because of the high replacement frequency and cost of these liners, improvements in the properties of Hadfield steels may represent a great economic benefit for mining operators. Therefore, correctly assessing wear performance is a relevant matter in the research and development activities regarding Hadfield steels. However, conventional laboratory tests may not accurately mimic the conditions of impact and gouging abrasion occurring in crushing applications. Field tests may represent a complementary source of information particularly useful in the optimization of Hadfield steels. In this work, the wear performance of two Hadfield steels was investigated through field testing. Their characteristics included high carbon content and two different levels of manganese content. Two sites were chosen for the assessment: a pebble crushing plant and an aggregate plant. The first site presented very hard material and compression crushing conditions, whereas the second site presented impact crushing conditions. The use of field tests allowed comparing wear ratios between both steels and it also permitted to identify critical issues constraining steels performance, such as microstructure embrittlement. Despite some limitations, the results from the field tests demonstrated that better wear performance was associated with higher manganese content.

The Role of Distribution Forms of Fe–Cr–C Cladding Layer in the Impact Abrasive Wear Performance of Hadfield Steel

“…Hadfield steels have been widely used in the field of the impact abrasive wear to produce wear-resistant components such as the jaw crusher plates and cone crusher liners because of their excellent toughness and impact hardening property [1][2][3]. The characteristics of the abrasive [4][5][6][7] such as hardness and compressive strength, have a significant influence on the impact hardening property of the Hadfield steel.…”

The Effect of Precipitation Hardening on the Properties Hadfield Steel

“…Chromium is considered as the most economic alloying element that can be used in alloying of Hadfield steel, owing to its affinity in forming different categories of carbides M3C7, M23C6, MC6 [11,12]. Certainly, each category of these carbide can be precipitated at significant temperature with distinguished size [1,[13][14][15]. Thereby, it is crucial to identify the temperature at which the free energy of each category is much negative, allowing its formation.…”

Structure of High-Carbon Steel After Welding With Rapid Cooling

“…Any machine part that works in moving contact under load with some counter body always suffer from wear, which is gradual loss of material from contact surface. Ultimate wear may vary from several tenths of micrometers, for example in elements of diesel engine fuel pumps [1] or dies for assembling car body parts [2][3][4] to tenth of millimeters for parts of blast furnaces [5] or milling and crushing equipment in mineral processing industries working under abrasive wear [6]. Reducing wear loss may be achieved in several ways.…”