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prof. dr hab. inż. Michał Styp-Rekowski, dr inż. Maciej Matuszewski, ph. d. eng. Ivan Oborsky Modular machine-tools - one of the factors determining manufacturing process efficiency

In this paper examples of the possibilities of using modular machinę tools application in manufacturing processes were presentted. Characteristic features of such the machine-tools using in the process were indicated. Factors that make the use of modular machinę tools increases the efficiency and productivity of the manufacturing process were also identified

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prof. nadzw. dr hab. inż. Tadeusz Sałaciński

Machinę parts quality in relation to six sigma methodology

Six Sigma is a elear and flexible system designed for achieving, maintaining and maximizing company success. It is a deep understanding of needs of potential customers, well regulated use of facts and measurement data, as well as statistical analysis to create and improve business processes. Effective implementation of Six Sigma leads to cost reduction, produc-tivity grow, enlargement of market share, binding customers, defect reduction, change in company activity culture and development of product.

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dr inż. Kazimierz Czechowski, dr inż. Jerzy Stós, mgr inż. Iwona Wrońska Some aspects of difficult-to-machine steels and cast irons machining

Difficult-to-machine materials are briefly characterized. They include alloy and hardened tool steels, austenitic stainless steels, white and austempered ductile cast irons. The fundamental principles of machining these materials are discussed. Examples of applied machining parameters and some results of research works carried out in the world are presented.

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dr inż. Paweł Lonkwic

Arch welding of metal studs - practical application

The study below presents the method of blade welding of studs for finishing passenger lift elements. this method is com-monly applied in machinę industry as one of the simplest and fastest ways of joining finishing elements with other materiał, undoubtedly, the advantage of this method is the fact that on the surface of finishing elements bolt heads cannot be seen. Below stud welding methods are described and their short descriptions are given as well.

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dr inż. Kazimierz Bolanowski

Effect of heat treatment on the mechanical properties of 10MnVNb6 Steel

Because of its Chemical composition, 10MnVNb6 microalloyed Steel is dassified as high strength Steel. A Iow carbon content contributes to its good weldability [1, 2], The composition of 10MnVNb6 was developed in the late 1900s [3], As the Steel exhibits high yield strength and ultimate tensile strength, it has been used, for instance, in the form of plates in booms of truck-mounted cranes and STAR truck chassis frames [4], The good strength properties are achieved as a result of grain refinement and precipitation strengthening of the ferrite matrix [5],

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dr inż. Jan Krzos

Indicators of machinability of grinding wheel

The article presents qualitative, quantitative and synthetic indicators of machinability of grinding wheel. Describes how to build indicators and criteria of their selection in dependence of technological requirements.

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dr inż. Edward Wajs

Tribological properties of electroplated nickel coatings containing SiC nano-and microparticles

This paper presents a method of shaping graded multilayer structures electroplated coatings deposited on Steel C45 and

and his influence on the tribological properties of the obtained coatings.