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Article

Dariusz Ozimina, Monika Madej, Joanna Kowalczyk, Ewa Ozimina and Stanislaw Plaza

This study aims to determine the properties of a new non-toxic cutting fluid and compared with cutting fluid based on mineral oil.

Abstract

Purpose

This study aims to determine the properties of a new non-toxic cutting fluid and compared with cutting fluid based on mineral oil.

Design/methodology/approach

The tool wear was measured under dry and wet cutting conditions. The non-toxic cutting fluid was compared with cutting fluid based on mineral oil. The experiments were carried out using CTX 310 ECO numerical control lathe. The wear of the cutting tools was measured by means of stereo zoom microscopy (SX80), while the elements were identified through scanning electron microscopy (JSM 7100F). The workpiece surface texture was studied using a Talysurf CCI Lite non-contact 3D profiler. The contact wetting angle was established with a KSV CAM 100 tester.

Findings

The non-toxic cutting fluid has reached comparable coefficient of friction with a coolant containing mineral oil. The use of the non-toxic cutting fluid with low foaming tendency resulted in lower wear.

Practical implications

Machining processes require that cutting fluids be applied to reduce the tool wear and improve the quality of the workpiece surface. Cutting fluids serve numerous purposes such as they act as coolants and lubricants, remove chips and temporarily prevent corrosion of the product.

Originality/value

The investigations discussed in this paper have contributed to the development of non-toxic and environmentally friendly manufacturing because of the use of cutting fluid containing zinc aspartate and its comparison with commonly used cutting fluid.

Details

Industrial Lubrication and Tribology, vol. 70 no. 9
Type: Research Article
ISSN: 0036-8792

Keywords

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Article

Dariusz Ozimina, Monika Madej and Michał Styp‐Rekowski

The purpose of this paper is to determine the appropriate conditions for the chemical deposition of Ni‐P‐Al2O3 composite coatings, deposited on metalic matrix.

Abstract

Purpose

The purpose of this paper is to determine the appropriate conditions for the chemical deposition of Ni‐P‐Al2O3 composite coatings, deposited on metalic matrix.

Design/methodology/approach

Auto catalytic reduction of Ni in nickel sulfate and sodium hypophosphate bath, including 10 percent volume fractions of nanodispersive Al2O3 particles is treated in the alloy steel 100Cr6. The wear resistance and friction coefficient of the coatings are determined using tester T‐01M, a ball‐disc tester for mitigated solid friction conditions, in model lubricants: oil bases, oil bases with antiwear additives AW.

Findings

The analysis of the properties of the Ni‐P‐Al2O3 deposits confirms that the presence of the dispersion phase of aluminium oxide determines the coating wearability.

Practical implications

The paper presents some indications of proper selection of antiwear coating generation methods (their parameters and conditions).

Originality/value

Investigations show that tribocatalytic effect of nickel coatings influence the intensity of antiwear layers generation in zinc dialkyldithiophosphates (ZDDP) tribochemical interaction in model lubricants and that tribochemical, adsorption, and reaction‐diffusion effect of ZDDP, decided on great effectiveness of generated antiwear surface layers, which was confirmed by the results of tribological investigation.

Details

Industrial Lubrication and Tribology, vol. 62 no. 5
Type: Research Article
ISSN: 0036-8792

Keywords

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Article

Michal Styp-Rekowski, Eugeniusz Manka, Maciej Matuszewski, Monika Madej and Dariusz Ozimina

The purpose of this paper was to create conditions for the correct decision concerning an exchange of the used rope for a new one. A cognitive goal was to indicate the…

Abstract

Purpose

The purpose of this paper was to create conditions for the correct decision concerning an exchange of the used rope for a new one. A cognitive goal was to indicate the causes of its wear and determining its mechanism reliability and durability.

Design/methodology/approach

The magnetic, organoleptic and strength standard tests of lifting triangle-strand ropes of a mining hoist were carried out. This way the current state of the tested rope was defined.

Findings

On the basis of an analysis of the results of the performed tests: magnetic, organoleptic and fatigue tests, it can be said that the magnetic one is accurate enough only to indicate the place of the rope’s biggest weakening, though the degree of weakening is not defined precisely – with significant excess. The accurate rope’s destruction degree is indicated by the strength tests.

Practical implications

The results of described investigations can improve safety of the mining rope mechanisms operation, even for an increased resource.

Originality/value

The elementary wear processes, which are the basic reason for the destruction of the rope, are indicated. Rope destruction is caused mainly by tribological factors: abrasion, corrosion and fatigue wear. Magnetic tests are accurate enough only to indicate the place of the rope’s biggest weakening (qualitative index). Most precisely, the rope’s destruction degree (quantitative index) can be found by the strength tests.

Details

Industrial Lubrication and Tribology, vol. 67 no. 1
Type: Research Article
ISSN: 0036-8792

Keywords

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