Analysis on Fiber Laser Welding of MS1470 Steel

2011 ◽  
Vol 328-330 ◽  
pp. 487-491
Author(s):  
Ya Jie Li ◽  
Li Jun Xin ◽  
Zhi Yong Wang
Keyword(s):  
Automotive Industry ◽  
Low Cost ◽  
Welding Process ◽  
High Strength ◽  
Fracture Morphology ◽  
Rolling Process ◽  
Light Weight ◽  
Lower Intensity ◽  
Fiber Laser Welding ◽  
Fracture Failure

MS1470 steel is mainly used in the automotive industry, which has high strength, light weight and low cost. However, there always appear grains coarsening, brittle increasing, lower intensity and other issues. To solve this problem, we have analyzed the welding process, the fracture morphology and microstructure etc. The results shown that the microstructure were mainly ferrites and lath martensites. However, grains coarsening in the HAZ were serious, and fracture failure also occurred in the heat affected zone. Meanwhile, MS1470 steel had formed a small amount of pores during rolling process, which also is an important reason for cracks formation.

Microstructure of an extruded rapidly solidified Al-8Fe-2Mo alloy

1986 ◽  
Vol 44 ◽  
pp. 548-549
Author(s):  
W. T. Donlon ◽  
J. E. Allison ◽  
S. Shinozaki
Keyword(s):  
Electron Microscopy ◽  
Automotive Industry ◽  
Fuel Economy ◽  
High Strength ◽  
Al Alloys ◽  
Light Weight ◽  
Thin Sections ◽  
Strength And Durability ◽  
Rapidly Solidified ◽  
Whitney Aircraft

Light weight materials which possess high strength and durability are being utilized by the automotive industry to increase fuel economy. Rapidly solidified (RS) Al alloys are currently being extensively studied for this purpose. In this investigation the microstructure of an extruded Al-8Fe-2Mo alloy, produced by Pratt & Whitney Aircraft, Goverment Products Div. was examined in a JE0L 2000FX AEM. Both electropolished thin sections, and extraction replicas were examined to characterize this material. The consolidation procedure for producing this material included a 9:1 extrusion at 340°C followed by a 16:1 extrusion at 400°C, utilizing RS powders which have also been characterized utilizing electron microscopy.

Metodología para el desarrollo de trayectorias en la aplicación por el proceso de soldadura GMAW en un robot industrial

2019 ◽  
pp. 1-4
Author(s):  
Josué Rafael Sánchez-Lerma ◽  
Luis Armando Torres-Rico ◽  
Héctor Huerta-Gámez ◽  
Ismael Ruiz-López
Keyword(s):  
Mechanical Properties ◽  
Automotive Industry ◽  
Industrial Robot ◽  
Welding Process ◽  
High Strength ◽  
Test Material ◽  
Advantages And Disadvantages ◽  
Application Characteristics ◽  
Joining Process ◽  
Gmaw Welding

This paper proposes the development of the methodology to be carried out for the metal joining process through the GMAW welding process in the Fanuc LR Mate 200iD industrial robot. The parameters or properties were considered for the application to be as efficient as possible, such parameters as speed of application, characteristics of the filler material, gas to be used as welding protection. The GMAW welding process can be applied semiautomatically using a hand gun, in which the electrode is fed by a coil, or an automatic form that includes automated equipment or robots. The advantages and disadvantages of the GMAW welding process applied in a manual and automated way were commented. The mechanical properties of the materials to which said welding can be applied were investigated; The materials with which this type of welding can be worked are the high strength materials, which are used in the automotive industry, for the forming of sheet metal. To know the properties of the material, destructive tests were carried out on the test material to be used, as well as the mechanical properties of the welding.

scholarly journals Advanced High Strength Steel in Auto Industry: an Overview

2014 ◽  
Vol 4 (4) ◽  
pp. 686-689 ◽  
Author(s):  
N. Baluch ◽  
Z. M. Udin ◽  
C. S. Abdullah
Keyword(s):  
Automotive Industry ◽  
High Strength Steel ◽  
Low Cost ◽  
High Strength ◽  
Direct Result ◽  
Advanced High Strength Steel ◽  
Geometrical Form ◽  
Cost Efficient ◽  
Safety Attributes ◽  
Selection Of

The world’s most common alloy, steel, is the material of choice when it comes to making products as diverse as oil rigs to cars and planes to skyscrapers, simply because of its functionality, adaptability, machine-ability and strength. Newly developed grades of Advanced High Strength Steel (AHSS) significantly outperform competing materials for current and future automotive applications. This is a direct result of steel’s performance flexibility, as well as of its many benefits including low cost, weight reduction capability, safety attributes, reduced greenhouse gas emissions and superior recyclability. To improve crash worthiness and fuel economy, the automotive industry is, increasingly, using AHSS. Today, and in the future, automotive manufacturers must reduce the overall weight of their cars. The most cost-efficient way to do this is with AHSS. However, there are several parameters that decide which of the AHSS types to be used; the most important parameters are derived from the geometrical form of the component and the selection of forming and blanking methods. This paper describes the different types of AHSS, highlights their advantages for use in auto metal stampings, and discusses about the new challenges faced by stampers, particularly those serving the automotive industry.

scholarly journals Assessment of Mechanical Properties of Biocomposite Material by using Sawdust and Rice Husk

2019 ◽  
Vol 11 (3) ◽  
pp. 147-156
Author(s):  
Prabhat SINGH ◽  
Bhagel SINGH
Keyword(s):  
Rice Husk ◽  
Low Cost ◽  
Glass Fibers ◽  
Testing Machine ◽  
Weight Ratio ◽  
High Strength ◽  
Light Weight ◽  
Universal Testing ◽  
Biocomposite Material ◽  
Main Factor

This paper presents an experimental study on the development of biocomposite material by using sawdust (SD) and rice husk (RH). The use of composite in the present production has increased dramatically since the 1970’s. Traditional material like aluminum, steel, iron and copper etc. may be easily replaced by using this classical biocomposites. The tensile test, hardness and tear resistance test were conducted in a Universal testing machine as per ASTM D638, ASTM D2240 and ASTM D1004 standard, respectively. Although commercial industries have increasingly been concerned with the low cost, light weight and eco-friendly material, the biocomposite material has also a great potential for reduced production cost and low maintenance which have proven to be a main factor in a push towards recycled biocomposites. In this paper we have fabricated a biocomposite model from materials like sawdust, rice husk. The main reason to use biocomposites is that they are more economical and have high strength to weight ratio compared to glass fibers. Hence fabricated material can be used for various applications.

Features of Application of Modern Wooden Structure into Reconstruction in Wenchuan-Earthquake Region

2011 ◽  
Vol 368-373 ◽  
pp. 3769-3772
Author(s):  
Yong Cao
Keyword(s):  
Low Cost ◽  
High Strength ◽  
Light Weight ◽  
Wood Industry ◽  
Urban Architecture ◽  
Wooden Structure ◽  
Rapid Construction ◽  
Rural Buildings ◽  
Post Disaster ◽  
Important Milestone

The 8-magnitude earthquake stuck the Wenchuan region of Sichuan Province on May 12, 2008. It resulted in heavy collapses and damage of buildings, then caused a great deal of injuries and loses in life and wealth. In the post-disaster reconstruction, several new structure systems with good seismic-resistant performance, especially modern timber structure, were adopted and promoted by local government. Its features of light weight, rapid construction, high strength and energy saving, can be shown in a serial of experiment reconstruction such as school building, nursing home for elderly, rural housing and so on. The application of modern timber architecture in Wenchuan region shows some new trends in China: Sharp increase in amount and scale, complete variety of modern wooden structure in use, covering urban architecture and rural buildings, cost control in construction and low-cost wooden housing, training in local builders and improvement of local wood industry, lastly, and flourishing subsequent study on wooden architecture and structure. It can be taken as the important milestone in development of modern timber architecture in China.

scholarly journals Role of Automotive Industry in Global Warming

2019 ◽  
Vol 62 (3) ◽  
pp. 197-201
Author(s):  
Shahid Hussain Abro ◽  
Alidad Chandio ◽  
Iftikhar Ahmed Channa ◽  
Abdulaziz S. Alaboodi
Keyword(s):  
Air Pollution ◽  
Grain Size ◽  
Global Warming ◽  
Automotive Industry ◽  
High Strength ◽  
Chemical Compositions ◽  
Light Weight ◽  
Grain Sizes ◽  
Heat Treated

Global warming and air pollution by human made gases such as CO2, is mainly produced by automotive industry that results in great risk for human health. The aim of this study is to reduce the above problem by using the high strength materials with low density in the manufacturing of automotive vehicles. An approach applied here is to enhance the strength by reducing the grain size, lowering the density and increasing elongation. Four steel samples with different chemical compositions were selected. Samples were heat treated from 850 °C to 1250 °C and cooled in water. Grain size distribution was calculated using matrox inspector software and result was plotted using origin. It was found that 850 °C has lowest and 1250 °C has highest grain sizes. Strength of steel can be increased not only by adding the alloying elements but also by controlling grain size. Light weight material consumes lower fuel and emits lower CO2, thus it minimizes the global warming and air pollution.  

scholarly journals The frame optimization and validation of resistance spot welding gun

2020 ◽  
Vol 11 ◽  
pp. 22
Author(s):  
Ji-Su Hong ◽  
Kwang-Hee Lee ◽  
Chul-Hee Lee
Keyword(s):  
Resistance Spot Welding ◽  
Spot Welding ◽  
Welding Process ◽  
High Strength ◽  
Consumer Electronics ◽  
Light Weight ◽  
Resistance Spot ◽  
High Stiffness ◽  
Deformation Amount ◽  
Resistance Spot Weld

Resistance spot welding gun is generally used to bond parts in the automotive and consumer electronics industries. In the automotive industry, chassis assembly operations use resistance spot welding. High production speeds allow for mass production and automation, resulting in diverse uses of resistance spot welding. To automate the welding process, it is mounted on a multi-joint robot and the welding gun is designed considering the specifications of the robot. High-strength structural design is needed to prevent deformation during pressurization, but the weight of the weld gun affects the efficiency of the robot. For this reason, it is necessary to design a welding gun with high stiffness and light weight. In this study, the analysis is carried out to measure the stress and deformation amount of weld gun. Optimization for weight reduction is performed by genetic algorithm method and topology optimization. The optimization of the resistance spot weld gun frame is performed, and the optimized model is verified through experimental verification. The production cost of industry has been reduced through the high stiffness and light weight of welding gun.

scholarly journals Parameter Optimization: Force (F), Time (T) and Current Intensity (I), in the RSW Welding Process of DP-290 Steel Plates Using the Taguchi Method

2018 ◽  
Vol 23 (2) ◽  
pp. 157-167 ◽  
Author(s):  
F. Reyes-Calderón ◽  
R. Vences-Hernández ◽  
J.A. Salazar-Torres ◽  
H.J. Vergara-Hernández ◽  
I. Aguilera-Navarrete ◽  
...  
Keyword(s):  
Taguchi Method ◽  
Automotive Industry ◽  
Spot Welding ◽  
Dual Phase Steel ◽  
Welding Process ◽  
Steel Plates ◽  
Optimal Parameters ◽  
Lower Intensity ◽  
Structural Parts ◽  
Peel Tests

Abstract Automotive industries are trying to use new light materials for structural parts of vehicles. However, the steels are being the best manufacturing material option in the automotive industry. One of the advanced steels commonly used due to the high mechanical properties is the Dual Phase Steel (Ferritic-Martensitic). Therefore, the welding process is still very important and a matter of improvement. The present work shows the design of an experimental matrix using the Taguchi method with the optimal parameters to apply in the spot welding process (RSW) of a DP-290 steel; the metallographic characterization, the microhardness and the Peel tests were also carried out in each specimen. The results determined that the lower intensity of current and a medium pressure for a longer time the better resistance to tearing, due to the microstructural changes in the specimens.

Influence of cork microparticles on the fracture type in single lap joints

2020 ◽  
pp. 095440622093672
Author(s):  
CI da Silva ◽  
AQ Barbosa ◽  
RJC Carbas ◽  
EAS Marques ◽  
A Akhavan-Safar ◽  
...  
Keyword(s):  
Failure Mode ◽  
Automotive Industry ◽  
Adhesive Bonding ◽  
Low Cost ◽  
High Strength ◽  
Industrial Applications ◽  
Epoxy Adhesive ◽  
Lap Joints ◽  
Fracture Type ◽  
Single Lap Joints

Over the years, the use of structural adhesive bonding has significantly grown in numerous technological sectors, including the aeronautical, aerospace, medical and automotive industries. The growing need to design lighter and better performing structures has pushed designers to improve their construction techniques, and consequently adhesive joints have appeared as an optimal joining solution, providing the necessary high strength and stiffness, low cost and excellent capabilities to join multi-material structures. In many of these applications, perhaps most importantly in the automotive industry, it is fundamental to ensure that when the joint is loaded to destruction, such as in a vehicle collision, failure is always cohesive and adhesive failure is avoided. This work proposes a novel technique to ensure that the failure mode is not adhesive, forcing a failure mode that does not propagate through or near the interface. To accomplish that, an epoxy adhesive typically used in the automotive industry was studied and reinforced with microparticles of cork. This study was validated experimentally with joint configurations typical of industrial applications, such as single lap joints, supported by numerical simulations performed to better understand the failure mechanism. The influence of the amount and size of these particles on the fracture type was evaluated. Overall, both the experimental and numerical results showed that by increasing both the size and the amount of the particles in the adhesive, the failure mode tends to be more cohesive (in the middle of the bondline) with a small reduction in joint strength, demonstrating that this can be a viable technique if cohesive failures in the adhesive layers are necessary.

The Possibilities of Evaluating the Yield Strength in the Heat Affected Zones of a Weld through Indentation

2016 ◽  
Vol 368 ◽  
pp. 20-24
Author(s):  
Petr Hanus ◽  
Eva Schmidová
Keyword(s):  
Mechanical Properties ◽  
Yield Strength ◽  
Automotive Industry ◽  
Welded Joints ◽  
Welding Process ◽  
Main Tool ◽  
High Strength ◽  
Basic Material ◽  
Elastic Plastic ◽  
Critical Areas

The research focuses on elastic-plastic behaviour of welded joints of materials which are commonly used in both constructional practice and the automotive industry. The examined welded joints are oriented to a common constructional S355 and a modern high-strength steel DOMEX 700MC.The main tool for the assessment of the elastic-plastic response was the methodology based on the instrumented penetration testing with the use of a cylindrical indenter. The indentation tool was applied into narrow zones of welded boundaries. These zones represent critical areas of welded constructions because of a changing structure and different mechanical properties than the basic material possesses. The indentation data were recalculated to the mechanical properties in shear with the help of Hencky ́s hypotheses about material behaviour. The correctness of the used methodology was verified by a tensile test. The aim of the work is to determine optimal methods for defining a yield strength and to find a hardening trend in the zones. The comparison of these steels revealed different changes due to the welding process. A substantial decrease of the yield strength of Domex700MC was observed, as a contrary to a stable, or partially increased, yield strength of the S355 steel. Structural analyses revealed a different material response of the evaluated steels, according to a different hardness in the heat affected zone.

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