Marián Bujna

Risk Analysis of Production Process for Automotive and Electrical Engineering Industry using FMEA

Abstract A failure mode and effects analysis (FMEA) is the most often used (and required by customers) tool for quality planning. The FMEA examines possible errors with their consequences for customers as well as their possible causes. This analysis can be realized on several levels (structure or process), and thus it may become a subject of various teams, from engineers of whole parts to those dealing with individual units, from workers preparing the manufacturing processes as a whole to those who prepare (or control or even perform) individual operations. The aim of this work is the analysis of risks using the FMEA for a selected production process and proposal of measures to eliminate risks.

Use of 8D Method to Solve Problems

If organizations want to be successful, they must quickly adapt to changing conditions in a competitive environment, must be flexible and must quickly resolve situations and problems occurring in organization. We use different tools and methods to solve these problems. One of these methods is Eight Disciplines Problem Solving (8D). The 8D method is a structured problem solving process. This method helps to correctly and timely solve problems. It is used when the cause of problem is unknown or when the solution to problem is beyond the capabilities of a single worker. This method is also used to improve products and processes

SAFETY AUDIT IN HATCHING COMPANY

A safety audit in a hatching company in order to improve the hatching quality and poultry breeding, poultry products and production by reducing risk factors and improving safety was performed. In the article is discussed the safety audit consisting of several parts such as an audit questionnaire and FMEA methods (analysis of causes and consequences of failures) where there are specified potential risks arising at work. These risks are evaluated, and corrective measures are defined to reduce the formation of potential risks. It examines the process of retraining employees on occupational safety and health, personal protective equipment and fire protection. To optimize the production, a compound feed production programme was designed.

INFLUENCE OF ROUGHNESS ON QUALITY MOLYBDENUM DEPOSIT LAYER BY THERMAL SPRAYING

BUJNA MARIAN, PRISTAVKA MIROSLAV, DOSTAL PETR, KORENKO MAROS, KADNAR MILAN. 2016. Infl uence of Roughness on Quality Molybdenum Deposit Layer by Thermal Spraying. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 64(1): 9–14. In this paper we deal with the impact of roughness on the quality of molybdenum layer. Insuffi cient cleaning may result in a poor quality of the sprayed layer. Our aim is to analyze the infl uence of surface roughness on the quality of molybdenum layer thickness applied by thermal spraying. Thermal spraying infl uence several physical and chemical properties of the coating surface. The most important ones include: hardness, density, porosity, corrosion resistance and adhesion. This

Monitoring the Capability of Production Equipment in Organization

Abstract This work is focused on determining the capability of production equipment in Volkswagen Slovakia, a.s. during the moulding of a car door. There were taken 150 samples from the moulding process that followed each other. Values were recorded on a Wenzel RAplus 1625 measuring machine. Subsequently, process stability was verified. It showed that measured values had a stable average value, and the process did not show irregularities in the diagrams of the X card and s card. After verification of stability, the values of Cm and Cmk were calculated, which exceeded the minimum requirement of 1.66 and 1.67, and the requirements for the capability of production equipment have thereby been met.

Reliability monitoring of grain harvester in operating conditions.

Reliability and quality are strongly linked between each other although people are often confused and consider these to be the same. Quality is defined as the ability to satisfy requirements that customers had determined or expected. If an organization manages to fulfill preconditions and requirements, it has a potential that customers will continue to use its products while buying new ones. Reliability can be named as an indicator expressing the probability that a product will perform the function it was made for and for a period specified in given operating conditions. In this work, we have focused on monitoring the specific parameters in two types of grain harvesters in operating conditions.

Impact of Insufficient Cleaning on the Quality of Molybdenum Layer Applied by Thermal Spraying

Thermal spraying influences several physical and chemical properties of the coating surface. The most important of them are hardness, density, porosity, corrosion resistance and adhesion. This technology of surface treatment of material is often used for its high degree of hardness. Hardness and erosion resistance are the parameters that need to be achieved particularly in working conditions where there is excessive component wear. In this paper, we deal with the impact of purifying on the quality of molybdenum layer. Insufficient cleaning may result in a poor quality of the sprayed layer. Our aim is to measure and analyse the quality of molybdenum layer thickness applied by thermal spraying after insufficient cleaning.

Statistical Process Control in Automotive Industry

Abstract Organisations active in the market, regardless of the sphere of action, must constantly face pressures from an uncompromising competition. Therefore, if organisations wish to be successful in the market and constantly move forward, they must draw attention to the quality of products in the market. Statistical process control is the implementation of such statistical methods through which the production process is regulated and controlled to ensure the production of the highest possible amount of products that comply with requirements imposed on them.

Use of Statistical Methods in Quality Control

Abstract More and more organisations are beginning to realise how important is it to implement a quality management system. Its main task is to rejuvenate the given processes in production. Problem solving is systemic within quality assurance procedures of an organisation. This work describes a quality management system according to ISO 9001 and statistical methods in quality management. The theoretical part contains the characteristics and description of the system listed above. The practical part shows the use of knowledge in the organisation to solve problems.