Effect of boron on the sliding wear of directionally solidified high-chromium white irons

Corrêa, R. R.; Bedolla-Jacuinde, A.; Zuno-Silva, Jorge; Cardoso, E.; Mejı́a, I.

doi:10.1016/j.wear.2008.11.009

Cited by 48 publications

(25 citation statements)

References 18 publications

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“…Mn [5] has a strong role in promoting for harden-ability, and can neutralize the harmful effect of S. Increased the content of Mn, can increased hardness obviously. B [6] can increased harden-ability obviously, and increased its content, the hardness improved, and the impact toughness was dropped.…”

Section: Results Of the Experiments And Analysismentioning

confidence: 95%

New Type of Bimetal Composite Casting and Welding Connection Square Hammer

Yang¹,

Rong²,

Zhao³

et al. 2015

Proceedings of the 2015 International Conference on Materials, Environmental and Biological Engineering

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Abstract. The brick crusher hammers were used in factory, which wear-resisting was poorer. According this phenomenon, the single structure was designed in symmetrical fission structure. Firstly, high chromium cast and low alloy steel were casted into half of the bimetal hammer head, then two new type bimetal hammer head were connected into a whole body by the welding technology. The high abrasion resistance and impact toughness of bimetal composite material played an important role in process of use and the service life was improved effectively, which provided a new way of thinking for complex compound casting. The results showed that the new type of bimetal composite casting and welding connection hammer production's cost was 1.5 times of high manganese steel hammer, but the service life was improved 3~5 times. Low alloy steel and high chromium cast iron composite layer was a metallurgical combination, and the whole strength was good and no fault phenomenon in the using process after welding.

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Section: Results Of the Experiments And Analysismentioning

confidence: 95%

New Type of Bimetal Composite Casting and Welding Connection Square Hammer

Yang¹,

Rong²,

Zhao³

et al. 2015

Proceedings of the 2015 International Conference on Materials, Environmental and Biological Engineering

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“…In addition, it is not necessary to use the cutting fluid for alternative metal-cutting methods. 3 Several studies [4][5][6] have been performed to investigate and develop the microstructure and mechanical properties of Ni-Hard 4, so far known as the high-alloyed white-cast iron. Its main alloying elements are 7-11 % Cr, 5-7 % Ni and 2.5-3.2 % C. Researchers have studied the wear resistance, heat treatments and the influence of the alloying elements on cast iron.…”

Section: Introductionmentioning

confidence: 99%

“…Its main alloying elements are 7-11 % Cr, 5-7 % Ni and 2.5-3.2 % C. Researchers have studied the wear resistance, heat treatments and the influence of the alloying elements on cast iron. [4][5][6] The tool wear and the tool life are two important problems encountered in the hard-turning processes. There are many investigations, focused on diminishing these problems.…”

Section: Introductionmentioning

confidence: 99%

Determination of the cutting-tool performance of high-alloyed white cast iron (Ni-Hard 4) using the Taguchi method

Kır¹,

Öktem²,

Çöl³

et al. 2016

Mater. Tehnol.

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High-alloyed white-cast-iron materials are commonly used in the manufacturing industry due to their high wear resistance. The aim of this research is to determine the cutting tool and the optimum cutting conditions required for the metal cutting of these materials. In this study, it is proposed to determine the wear and the tool life utilizing the Taguchi optimization method when hard turning the Ni-Hard 4 material, the alloyed cast iron, with cutting tools produced with powder metallurgy (PM) and to improve the performance of the cutting tools. A series of 18 experiments were conducted on a CNC turning machine, using the cutting process parameters such as the cutting speed, the feed and the depth of cut, based on the Taguchi L9 orthogonal design of experiments. Uncoated cutting tools were utilized to perform these experiments. PM cutting tools with WC grain sizes of 0.8 μm and 1.25 μm were selected for the hard-turning experiments. The flank wear of the cutting tools was examined with SEM. Then, the life of each cutting tool was identified based on the cutting length. The performance of the cutting tools in terms of the wear and the tool life was determined with the Taguchi method based on the obtained data. The results of this study contributed to the hard turning of the Ni-Hard 4 material that is mostly employed in the as-cast condition in the manufacturing industry due to its high hardness. The optimum cutting conditions were determined by means of the Taguchi method. Keywords: hard turning, cutting tools, wear, Taguchi method Mo~no legirano belo lito`elezo se uporablja v predelovalni industriji zaradi velike odpornosti proti obrabi. Namen raziskave je poiskati rezalno orodje in optimalne pogoje rezanja, potrebne za rezanje teh materialov. V {tudiji je predlagano, da se dolo~i obraba in zdr`ljivost orodij, z uporabo Taguchi metode, optimizacija pri stru`enju materiala Ni-Hard 4 legiranega litega`eleza z rezalnimi orodji, izdelanimi po postopku metalurgije prahov (PM), da bi izbolj{ali zmogljivost rezalnega orodja. Serija 18-ih preizkusov, z uporabo procesnih parametrov, kot so: hitrost rezanja, podajanje in globina reza, na podlagi Taguchi L9 ortogonalne postavitve preizkusa, so bile izvr{ene na CNC stru`nici. Za te eksperimente so bila uporabljena rezalna orodja brez prevleke. Za preizkus te`kega stru`enja so bila izbrana PM rezalna orodja, z velikostjo zrn WC med 0.8 μm in 1.25 μm. Obraba boka rezalnega orodja je bila preiskovana s SEM. Zdr`ljivost vsakega orodja je bila dolo~ena na podlagi dol`ine stru`enja. Rezultati {tudije se nagibajo k te`kem stru`enju materiala Ni-Hard 4, ki se ga ve~inoma uporablja v predelovalni industriji v litem stanju, zaradi velike trdote. Optimalni pogoji rezanja so bili dolo~eni s pomo~jo Taguchi metode.

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“…to perform minimum friction and wear to meet increasing demands on reducing pollution and fuel costs [1][2][3][4][5]. Many of investigations were conducted under reciprocating sliding because of their applications.…”

Section: Introductionmentioning

confidence: 99%

Lubricated Friction and Wear Properties of P-B Bearing Flaky Graphite Cast Iron

Itoh

Ōgi

2010

KEM

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Abstract. Lubricated reciprocating tests were conducted on an SRV tester to investigate effects of stroke and frequency on frictional and wear properties of flaky graphite cast iron used for marine cylinder liner by varying frequency and stroke under a given sliding velocity in boundary and mixed lubrication regime. It was clarified that changes in coefficient of friction were significantly dependent on stroke and frequency: in boundary lubrication, coefficient of friction at steady state showed a lower value at a combination of lower frequency and therefore larger stroke. In mixed lubrication, however, a combination of lower frequency and larger stroke produced a higher friction. In boundary lubrication where no run-in process was observed, higher frequency contributed to producing rougher surfaces resulting in higher friction. In mixed lubrication bordering on boundary lubrication higher frequency promoted run-in, enhancing film formation and lowering friction. Effects of frequency and stroke also reflected on wear, changes in separation voltage between a disk and a ball specimen, which were in accordance with changes in friction.

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Effect of boron on the sliding wear of directionally solidified high-chromium white irons

Cited by 48 publications

References 18 publications

New Type of Bimetal Composite Casting and Welding Connection Square Hammer

New Type of Bimetal Composite Casting and Welding Connection Square Hammer

Determination of the cutting-tool performance of high-alloyed white cast iron (Ni-Hard 4) using the Taguchi method

Lubricated Friction and Wear Properties of P-B Bearing Flaky Graphite Cast Iron

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