scholarly journals Effect of Titanium Inoculation on Tribological Properties of High Chromium Cast Iron

2017 ◽  
Vol 17 (4) ◽  
pp. 143-146
Author(s):  
D. Siekaniec ◽  
D. Kopyciński ◽  
A. Szczęsny ◽  
E. Guzik ◽  
E. Tyrała ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Tribological Properties ◽  
Microstructural Analysis ◽  
Reference Sample ◽  
High Wear Resistance ◽  
Wear Loss ◽  
High Chromium ◽  
High Chromium Cast Iron ◽  
Chromium Cast Iron

Abstract The present investigation focuses on the study of the influence of titanium inoculation on tribological properties of High Chromium Cast Iron. Studies of tribological properties of High Chromium Cast Iron, in particularly the wear resistance are important because of the special application of this material. High Chromium Cast Iron is widely used for parts that require high wear resistance for example the slurry pumps, brick dies, several pieces of mine drilling equipment, rock machining equipment, and similar ones. Presented research described the effects of various amounts of Fe-Ti as an inoculant for wear resistance. The results of wear resistance were collated with microstructural analysis. The melts were conducted in industrial conditions. The inoculation was carried out on the stream of liquid metal. The following amount of inoculants have been used; 0.17% Fe-Ti, 0.33% Fe-Ti and 0.66% Fe-Ti. The tests were performed on the machine type MAN. The assessment of wear resistance was made on the basis of the weight loss. The experimental results indicate that inoculation improve the wear resistance. In every sample after inoculation the wear resistance was at least 20% higher than the reference sample. The best result, thus the smallest wear loss was achieved for inoculation by 0.66% Fe-Ti. There is the correlation between the changing in microstructure and wear resistance. With greater amount of titanium the microstructure is finer. More fine carbides do not crumbling so quickly from the matrix, improving the wear resistance.

scholarly journals Improvement of abrasive wear resistance of the high chromium cast iron ASTM A-532 through thermal treatment cycles

2016 ◽  
Vol 25 (41) ◽  
pp. 93 ◽  
Author(s):  
Oscar Fabián Higuera-Cobos ◽  
Florina-Diana Dumitru ◽  
Dairo Hernán Mesa-Grajales
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Abrasion Resistance ◽  
Retained Austenite ◽  
White Cast Iron ◽  
High Wear Resistance ◽  
Air Cooling ◽  
High Chromium ◽  
High Chromium Cast Iron ◽  
Chromium Cast Iron

<p>High-Chromium White Cast Iron is a material highly used in mining and drilling shafts for oil extraction, due to its high wear resistance. However, because of the austenitic matrix found in the as-cast state, an adequate heat treatment cycle is necessary. This paper studies the effects of different cooling media after a destabilization treatment on the microstructure, hardening and abrasion resistance behaviors of a hypoeutectic high chromium white cast iron. The results show that although air cooling followed by immersion in CO2 can effectively reduce the retained austenite, this is not enough to transform completely the retained austenite into martensite. The low retained austenite percentages improve bulk hardness, but they decrease the abrasion resistance of the high chromium cast iron. The best combination of hardness and wear resistance was found in the samples cooled in air, due to the percentage of retained austenite and a moderate precipitation of chromium carbide.</p>

Toughening Study on High Chromium Cast Iron Liner Plates of HZS Series Commercial Concrete Mixing Plant

2011 ◽  
Vol 179-180 ◽  
pp. 1338-1341
Author(s):  
Jiang Liu ◽  
Jun Fu
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Impact Toughness ◽  
Normal Operation ◽  
High Wear Resistance ◽  
Liner Material ◽  
High Chromium ◽  
High Chromium Cast Iron ◽  
The Impact ◽  
Chromium Cast Iron

Because of high wear resistance and low cost, high chromium cast iron liner plate is the most commonly used liner for HZS series concrete mixing station at present. However, in normal operation, the high-chromium cast iron liner produced by conventional casting process is easy to crack at its corners. We found that the cracking reasons of this type of liner plate are mainly the lower cast impact toughness, slightly higher hardness, and there has not gotten a good matching between the hard particles and the matrix organizations. Thus we used the secondary heat treatment to slightly reduce the hardness and increase the impact toughness of cast iron liner plate, which can improve the wear resistance and impact resistance of the liner material to extend the service life of these cast iron liners.

Wear Resistance of Nano TiN Strengthen High Chromium Cast Iron

2012 ◽  
Vol 217-219 ◽  
pp. 2410-2413 ◽  
Author(s):  
Xing Hai Shao ◽  
Jing Pei Xie ◽  
Wen Yan Wang ◽  
Yan Li ◽  
Pin Gan Zhou ◽  
...  
Keyword(s):  
Grain Size ◽  
Wear Resistance ◽  
Cast Iron ◽  
Alloy Layer ◽  
Chromium Alloy ◽  
High Chromium ◽  
High Chromium Cast Iron ◽  
Carbon Ferrochrome ◽  
Micro Analysis ◽  
Chromium Cast Iron

The effects and the mechanisms of namo TiN on the high chromium cast iron are studied, the material has been prepared through infiltration casting and addition of high carbon ferrochrome powder and nano TiN powder. The alloy is formed on the surfaced of guide plate, and the wear resistance of alloy have been studied by means of SEM, XRD micro-analysis and wear-resistant performance. The grain size and the type of carbide in the organization are affected by nano TiN, and the wear resistance of carbon chromium alloy layer is affected by the type of carbide; when the addition of nano TiN is 1% (wt), the grain size is apparently refined, overeutectic primary M7C3 in the hypereutectic is precipitated uniformly in considerable amounts, therefore the wear resistance of alloy can be improved effectively.

Microstructure and Corrosive Wear Property of Super High Chromium Cast Iron (SHCCI)

2011 ◽  
Vol 228-229 ◽  
pp. 905-908
Author(s):  
Liu Jie Xu ◽  
Shi Zhong Wei ◽  
Ji Wen Li ◽  
Guo Shang Zhang ◽  
Xiang Dong Ma
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Carbon Content ◽  
Corrosive Wear ◽  
Wear Property ◽  
High Chromium ◽  
High Chromium Cast Iron ◽  
Relative Wear ◽  
Relative Wear Resistance ◽  
Chromium Cast Iron

To increase the wear resistance of components in slurry pump suffering from serious corrosive abrasion, new super high chromium cast iron (SHCCI) which contains 37wt.% chromium approximately and different carbon content were developed based on the high chromium cast iron with 26wt.% Cr (Cr26). The microstructure of SHCCI was investigated by SEM and XRD. The hardness and impact toughness of SHCCI was tested, and the corrosive wear property of SHCCI was also researched using MCF-30 type erosion abrasion tester under H3PO4 medium condition. The results show that the microstructure of SHCCI is composed of carbide of M7C3+M23C6, martensite and retained austenite. With the increase of carbon content, the hardness of SHCCI first increases and then decreases, the toughness increases, and the corrosive wear property decreases. The relative wear resistance of SHCCI is obviously superior to that of Cr26 cast iron, and the maximal relative wear resistance of SHCCI is three times higher than that of Cr26 cast iron.

Influence of retained austenite on the wear resistance of high chromium cast iron under various impact loads

Wear ◽  
1993 ◽  
Vol 162-164 ◽  
pp. 83-88 ◽  
Author(s):  
Xi Jun-Tong ◽  
Zhou Qing-De ◽  
Liu Shi-Hui ◽  
Song Guang-Shun
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Retained Austenite ◽  
Impact Loads ◽  
High Chromium ◽  
High Chromium Cast Iron ◽  
Chromium Cast Iron

scholarly journals Effect of Si Content on the Microstructure and Wear Resistance of High Chromium Cast Iron

2018 ◽  
Vol 58 (8) ◽  
pp. 1532-1537 ◽  
Author(s):  
Jian-Ping Lai ◽  
Qing-Lin Pan ◽  
Yuan-Wei Sun ◽  
Chang-An Xiao
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
High Chromium ◽  
High Chromium Cast Iron ◽  
Si Content ◽  
Chromium Cast Iron

Wear resistance of Ni-hard 4 and high-chromium cast iron re-evaluated

Wear ◽  
1993 ◽  
Vol 166 (1) ◽  
pp. 37-40 ◽  
Author(s):  
Liu Jinzhu ◽  
Li Shizhuo ◽  
Man Yongfa
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
High Chromium ◽  
High Chromium Cast Iron ◽  
Chromium Cast Iron

scholarly journals Wear Resistance Mechanism of ZTAP/HCCI Composites with a Honeycomb Structure

Metals ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 588 ◽  
Author(s):  
Mojin Zhou ◽  
Yudong Sui ◽  
Xiaoyu Chong ◽  
YeHua Jiang
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Abrasive Wear ◽  
Layer Structure ◽  
Resistance Mechanism ◽  
Honeycomb Structure ◽  
Protection Effect ◽  
High Chromium ◽  
High Chromium Cast Iron ◽  
Chromium Cast Iron

The abrasive wear resistance of zirconia toughened alumina (ZTA) ceramic particle reinforced high chromium cast iron (HCCI) composites has been systematically investigated using a moving wedge type of apparatus. The results of three-body abrasive wear show that the wear resistance of the composites with honeycomb is three times higher than that of the high chromium cast iron. The wear resistance of the composites with a honeycomb structure is close to that of the layer structure and is higher than that of the HCCI because the honeycomb wall in the cell honeycomb structure is prominent and because the honeycomb core is depressed. The wear mechanisms of the composites are mainly microcutting and fatigue fractures. The honeycomb structure forms a “macrocosmic shadow protection effect” and a “microcosmic shadow protection effect” to protect each composite and to improve the wear resistance of the composites.

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