Ernest Gondár
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View article: Wear of TiAlCN Coating on HCR Gear
Wear of TiAlCN Coating on HCR Gear Open
Wear of TiAlCN coatings deposited on HCR (High Contact Ratio) gears was studied by the Niemann test during which the tested gears were loaded up to the 12th load stage. The resistance against scuffing was evaluated based on the criteria of…
View article: Wear of AlCrN and CrAlSiN Coatings Applied to Nonstandard Involute Gears
Wear of AlCrN and CrAlSiN Coatings Applied to Nonstandard Involute Gears Open
Wear of nonstandard involute gears with two types of coatings, AlCrN and CrAlSiN, was studied. The coatings were applied by cathodic arc deposition. The gears were tested using a Niemann tester at a graduated load up to the 12th load stage…
View article: A Study of Wear in Thin Coatings Applied to Convex-Concave Gearings
A Study of Wear in Thin Coatings Applied to Convex-Concave Gearings Open
The submitted contribution deals with the wear of thin coatings applied to convex–concave gearings for gear made from C45E steel. The influence of the tribological characteristics (friction coefficient, wear, adhesion and hardness) of the …
View article: The Application of DLC Coating on Convex-concave (C-C) Gearings
The Application of DLC Coating on Convex-concave (C-C) Gearings Open
This paper discusses the possibility of increasing the surface load capacity in C60E steel gearings by applying DLC thin coating. It describes the effect of tribological characteristics, such as friction coefficient, wear, adhesion and har…
View article: CONSTRUCTIONAL MODIFICATION OF AN EXTRUSION DIE
CONSTRUCTIONAL MODIFICATION OF AN EXTRUSION DIE Open
The paper deals with design and optimization of an extrusion die which consists of a die body and a set of replaceable plugs for various extrusion cross-sections.This system is primarily used for producing WPC products on the laboratory ex…
View article: THE CARRYING CAPACITY OF TiCN COATING ON CONVEX-CONCAVE (C-C) GEARINGS
THE CARRYING CAPACITY OF TiCN COATING ON CONVEX-CONCAVE (C-C) GEARINGS Open
The article describes modifications to the effector of a manipulator arm proposed in order to increase the accuracy of jaw force measurements.Gripping force measurement is performed using strain gauges.Their proper positioning and connecti…
View article: THE POSSIBILITY OF USING RECYCLED POLYPROPYLENE SUPOL HT345E
THE POSSIBILITY OF USING RECYCLED POLYPROPYLENE SUPOL HT345E Open
emphasis is given to accurate prediction of their properties, especially strength.There are several options for predicting pin connections, such as analytical calculations, Special-Purpose Programs (SPPs), or Finite Element Analysis (FEA).…
View article: Reduction of Sink Marks in Injection Overmolding Process of Metal-Plastic Parts
Reduction of Sink Marks in Injection Overmolding Process of Metal-Plastic Parts Open
Metal-plastic parts with steel inserts prepared by overmolding technique showed several molding defects including sink marks. The depths of sink marks on overmolding metal-plastic parts prepared at two injection overmolding temperatures of…
View article: Optimization of Overmolding Process of Metal-Plastic Part
Optimization of Overmolding Process of Metal-Plastic Part Open
Metal-plastic parts with steel inserts prepared by overmolding technique showed several cracks. Cracks marked as no 1 and 2 were noticed immediately after overmoulding process. Cracks no 3 and 4 were propagated only several days after over…
View article: The Influence of High Temperature Loading on the Structure of Fine Al Powder Compacts
The Influence of High Temperature Loading on the Structure of Fine Al Powder Compacts Open
Aluminum specimens for pilot resistance testing at higher temperature and mechanical loading were prepared by means of powder metallurgy. The aluminum powders with nanooxide surface layers were prepared. The tests were performed at 300°C a…