At present, seersucker woven fabrics are increasingly used for the manufacturing of clothing. These fabrics are created in the weaving process as a result of the different tension of two sets of warp threads: basic and puckering. Seersucker woven fabrics applied in properly designed clothing have an ability to massage the body while wearing such clothing. In order to cinduct a detailed analysis of the massaging process during the clothing usage, it is necessary to examine the phenomena occurring during the massaging. Friction is one of the most important phenomena influencing the massaging process. Due to the nature of seersucker woven fabrics, measurement of the friction coefficient is difficult. This paper presents the problems related to measurement of the coefficient of friction for an exemplary seersucker fabric. The work contains a description of the measurement method proposed and the consequences resulting from its application.

Accepted: 17 May 2016 This paper presents an overview of the state of knowledge on temperature measurement in the cutting area during magnesium alloy milling. Additionally, results of own research on chip temperature measurement during dry milling of magnesium alloys are included. Tested magnesium alloys are frequently used for manufacturing elements applied in the aerospace industry. The impact of technological parameters on the maximum chip temperature during milling is also analysed. This study is relevant due to the risk of chip ignition during the machining process.

In this paper, the impact of selected cutting parameters (both cutting and feed speed) on the temperature generated in the workpiece being machined during milling is assessed. The investigations were carried out by milling of 41Cr4 alloy steel using disc cutter mill with F40M sintered carbide inserts with the anti-wear coating. The investigations were conducted with the dry cutting manner. During the investigations three cutting speeds and three feed speeds were applied, with a constant depth of cut. In the course of the investigations, the temperature in the machining, the zone was recorded using the Flir SC6000HS infrared camera. As a result of the measurements, the mean temperature in the defined measurement zone was determined, and, based on that, a procedure for the determination of the t W-max maximum temperature in the workpiece being machined has been proposed. Finally, on the basis of the obtained results, it has been found that the increase in cutting speed leads to the increase in the t W-max maximum temperature, whereas the increase in feed speed leads to the reduction of that temperature in the workpiece being machined. Highlights• Application of thermography measurements for the determination of the temperature produced in the workpiece being machined. • Description of the methodology of the determination of the tW-max maximum temperature in the workpiece being machined. • Determination of the impact of both cutting and feed speeds on the tW-max maximum temperature, in the workpiece being machined.

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The purpose of modern surface hardening technology is obtaining reproducible, precisely planned parameters of the carburized layer, minimizing the negative phenomena that result in dimensional changes after hardening and making it possible to determine the nature and magnitude of these changes. This concerns mainly the concept of singlepiece flow in heat treatment applied for the purposes of mass production, employing a special autonomous 4D Quenching chamber for high pressure gas quenching (HPGQ). The main components of the 4D Quenching chamber include a system of cooling nozzles surrounding the processed item and providing a uniform inflow of cooling gas from all directions (3D) and a table rotating together with the item processed, contributing to uniform cooling (4D). Within the framework of this paper there was studied the impact of gear wheel quenching in a 4D Quenching chamber using nitrogen at pressure of 6 and 10 bar on changes in geometry. Geometric measurements of facewidth of gear, hole diameter and outside diameter were performed before and after carburization and quenching. The results obtained allowed us to determine the impact of quenching pressure inside a 4D Quenching chamber on dimensional changes in gear wheels analyzed. The thermo-chemical treatment resulted in a decrease in outside diameters and hole diameters measured and an increase in facewidth of gears.