Comparative analysis of hardness in different zones of weld
Journal Title: Proceedings in Manufacturing Systems - Year 2015, Vol 10, Issue 3
Abstract
This paper studies the HV 10 Vickers hardness values measured on the end zones (beginning and end) of the samples taken for approval of welding technologies to analyze the situation less common welding technology without end plates. These values are then compared with those determined by measurements made in areas of welds means to assess the degree of deviation from the recommended values for steel grade analyzed. It was chosen for homologating of a welding process a steel sheet of thickness 20 mm of P355NL1 quality welded by the processes 141 + 111 + 121. The work presents the macroscopic and microscopic analysis of samples and preheats temperature calculation, calculation and estimation of carbon equivalent maximum hardness in the heat affected zone when welding steel P355NL1. In these areas of the beginning and end of the seam, there is a situation similar to welding the weld below 100 mm in length, where the thermal field propagates in welding non-steady state compared to the middle portion of long welded row, where the heat propagates quasi-stationary regime.
Authors and Affiliations
Nicolae GRIGORE
Keywords
Related Articles
- EP ID EP122820
- DOI -
- Views 114
- Downloads 1
Surface roughness monitoring in cutting force control system
The aim of this contribution is to present a reliable cutting force control system in end milling with the main focus on the integrated surface roughness prediction model. In this control system, cutting force sensor is...
TOWARDS PRODUCTION OF MICROFEATURES ON A CUSTOM-MADE STEREOLITOGRAPHIC DLP PRINTER
Stereolithographic digital light processing (DLP) printing is a liquid-based additive manufacturing process, where 3D parts are made by curing a photosensitive polymer kept in vat. In this paper, the in-house DLP printer...
Design of a car body part using reverse engineering and FEM
Deep drawing, as the main technology for obtaining car body parts, is one of the fields where the virtual design of parts and process is used for product development. The use of FEM in sheet metal forming processes is a...
Review of the present technological advance in the field of water jet cutting
Water jet cutting (WJC) is a relative recent technology that has a high interest due to its results. The main advantage in using this flexible non-conventional technology is that there is no heat-affected zone (HAZ). Ano...
Designing an Internet of Things (IoT) ready device for machine tool monitorizing
Nowadays more and more companies are using active monitoring systems for predictive maintenance of the manufacturing systems. With Industry 4.0 revolution almost all modern production systems are able to monitor the prod...