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Proceedings of

6th International Conference On Advances in Mechanical, Aeronautical and Production Techniques MAPT 2016

Date
27-Nov-2016
Location
Kuala Lumpur , Malaysia
Authors
6
ISBN
978-1-63248-112-2

2 Articles Published

1. UNCONVENTIONAL HEAT TREATMENT OF SPRING STEEL BY Q&P PROCESS

Authors: BOHUSLAV MASEK , DAGMAR BUBLIKOVA , DAVID AISMAN , HANA JIRKOVA , KAREL CMIEL

Abstract: Newly developed methods for heat treatments and any necessary thermomechanical working have led to the achievement of excellent properties for new types of multiphase structures. One of these new methods is the Q-P (Quenching and Partitioning) process. The result is usually martensitic structure with a defined proportion of retained austenite. This process can be used for different kinds of steels with a tensile strength about 2000 MPa with retention of good ductility of more than 10%. The Q-P process was applied to experimental steel whose main alloying elements were silicon, manganese and chrome. The resulting specimens were evaluated metallographically, the proportion of retained austenite was ascertained by X – ray analysis and mechanical properties were found using tension tests.

Keywords: Q&P process, 42SiCr, hig strengt steel, spring steel

Pages: 6 - 8 | DOI: 10.15224/978-1-63248-112-2-46

2. IDENTIFICATION OF PROBLEM IN LORRY PRODUCTION USING FMEA (FAILURE MODE EFFECT AND ANALYSIS)

Authors: IKHSAN SIREGAR

Abstract: Manufacturing company is producing lorries in large amoung thus the company is demanded to mantain and increase the consistency of the company in quality and quantity of each product unit in production process. This is done to ensure the survivability of the company in competition with the competitors. After a long operational duration, a product defect is detected due to producti on process, the research thus aimed to supervise and identify the source of the defect. Failure Mode and Effect Analysis (FMEA) is a method that can be used to identify the cause of defect in a production process. Thus using this method, an analysis of rel ated factor in production process can be conducted. The result of the research showed that error was mostly happened in iron plate cutting process due to inexperienced operator, where the value of Risk Priority Number (RPN) was 21 and other process was hav ing the value of 245. As a conclusion, the greatest defect in production process was caused by the ope

Keywords: Product defect, Failure Mode and Effect Analysis (FMEA),Operator, Quality, Risk Priority Number (RPN)

Pages: 1 - 5 | DOI: 10.15224/978-1-63248-112-2-34

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