Overlay materials used for increasing lifetime of machine parts working under conditions of intensive abrasion

Müller, Miroslav; Hrabě, P.

doi:10.17221/64/2011-rae

Cited by 25 publications

(24 citation statements)

References 13 publications

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“…Ploughshares, like many other parts working in soil, are subjected during operation to intensive abrasion wear [1][2][3] that results in a change in their geometry and a reduction of mass. In consequence, after reaching the so-called ultimate limit state, these components must be replaced with new ones.…”

Section: Introductionmentioning

confidence: 99%

Tribological Properties of Plough Shares Made of Pearlitic and Martensitic Steels

Stawicki

Białobrzeska

Kostencki

2017

Metals

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Tribological properties of ploughshares made of pearlitic and martensitic steels were compared in field tests. Sectional ploughshares consisting of separate share-points and trapezoidal parts were subjected to examinations. Contours of the examined parts were similar, but the thickness of the parts made of pearlitic steel was 1 to 3 mm greater for the share-points and 0.5 to 2 mm greater for the trapezoidal parts. Within the tests, sandy loams, loams, and loamy sands with circa (ca.) 13% humidity were cultivated. A greater intensity of thickness reduction and mass wear of the parts made of pearlitic steel was found, which indicates a lower resistance of this steel to wear in soil. However, contour changes of the share-points and the trapezoidal parts made of pearlitic and martensitic steels were comparable, which was probably influenced by the greater thickness of the parts made of pearlitic steel. The roughness of the rake faces of the parts made of pearlitic steel was greater than that for the parts made of martensitic steel, which can be attributed to lower hardness of the former. The largest differences occurred between maximum peak heights of the roughness profile values (R p ), which indicates stronger ridging in the case of pearlitic steel. Scanning electron microscope (SEM) observations of the rake faces showed that martensitic steel was subjected to wear mostly by microcutting, but pearlitic steel was principally worn by microcutting and microploughing. During tillage, only one share-point made of pearlitic steel was broken. However, the main disadvantage of these parts was that their bending was related to the lower mechanical strength of pearlitic steel.

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Section: Introductionmentioning

confidence: 99%

Tribological Properties of Plough Shares Made of Pearlitic and Martensitic Steels

Stawicki

Białobrzeska

Kostencki

2017

Metals

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“…Partly it has to fulfill relatively high strength requirements (namely the impact strength) and partly high resistance to the soil abrasive wear (Müller, Hrabě 2013).…”

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confidence: 99%

“…So, own part can be produced from cheaper material and the surface properties are reached by overlaying the suitable metal or alloy (Müller, Hrabě 2013).…”

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confidence: 99%

Evaluation of techniques for ploughshare lifetime increase

Hrabě¹,

Müller²,

Hadač³

2015

Res. Agric. Eng.

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Hrabě P., Müller M., Hadač V. (2015): Evaluation of techniques for ploughshare lifetime increase. Res. Agr. Eng., 61: 72-79.Sustainability in a sphere of agricultural commodities production depends on soil processing. The soil is also a considerable abrasive medium which affects in a negative way tools processing the soil. The aim of the research is to increase the lifetime of a mould board by means of a constructional setting of an overlaid material. The lifetime increasing of the ploughshare by means of the overlaying is a much discussed topic. For this reason such strategy for the experiment was chosen which would enable to increase the lifetime at preserving low costs for ploughshare treatment. The research was focused on the ploughshare lifetime increasing by means of overlaying the abrasive wear with resistant material. The ploughshares of one of the leading world producers of the soil processing machines were chosen for the experiment. The aim of the work is to compare two commonly available overlaid materials in the combination with two overlaying techniques.

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“…In the case of the limiting wear it is necessary to renovate or to replace the used materials. The use of deposits is the conventional example of metal materials renovation (Brožek 2007(Brožek , 2009Müller, Hrabě 2013). In this case the renovated machine part has often better properties than from the original material.…”

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confidence: 99%

Microparticle composites on the basis of scrap utilizable in the field of agricultural production

Valášek¹,

Brožek²

2015

Res. Agric. Eng.

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Valášek P., Brožek M. (2015): Microparticle composites on the basis of scrap utilizable in the field of agricultural production. Res. Agr. Eng., 61: 92-97.For renovation of functional surfaces of machines and devices for agricultural production it is possible to use, in addition to conventionally used methods, polymers with fillers -composites. The presence of microparticles in the polymeric matrix improves substantially the abrasive wear resistance and hardness. This contribution describes tribological properties of epoxy resin filled with chips of ferrous metals -the change of volume losses increase in dependence on the pressure increase (load) having effect on the worn surface. From the carried out experiments the considerable decrease of filled resin losses is evident compared with the resin without filler. At the same time the exponential increase of volume losses with the increased load was quantified in the course of tribological tests.

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Overlay materials used for increasing lifetime of machine parts working under conditions of intensive abrasion

Cited by 25 publications

References 13 publications

Tribological Properties of Plough Shares Made of Pearlitic and Martensitic Steels

Tribological Properties of Plough Shares Made of Pearlitic and Martensitic Steels

Evaluation of techniques for ploughshare lifetime increase

Microparticle composites on the basis of scrap utilizable in the field of agricultural production

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