The Electrical Contact Resistance in Resistance Welding Evaluated by Gleeble Testing Machine

2008 ◽  
Vol 575-578 ◽  
pp. 753-756 ◽  
Author(s):  
Wei Min Zhou
Keyword(s):  
Carbon Steel ◽  
Contact Resistance ◽  
Electrical Contact ◽  
Testing Machine ◽  
Low Carbon Steel ◽  
Resistance Welding ◽  
Measuring System ◽  
Low Carbon ◽  
Electrical Contact Resistance ◽  
Gleeble 3500

Electrical contact resistance is an important parameter in resistance welding. In this article, a Gleeble 3500 thermal-mechanical testing machine was employed to measure the contact resistance. The machine is equipped with a special electrical resistance measuring system. The contact resistance is experimentally investigated for welding low carbon steel to themselves. A detailed work was carried out to investigate the influence of pressure, temperature on the contact resistance of low carbon steel. The experimental results show that the contact resistance decreases when pressure or temperature increases.

Study on Microstructure and Friction of Bimetal 1.5Cr4.8Ni with Cast Iron and Low Carbon Steel

2012 ◽  
Vol 565 ◽  
pp. 650-655
Author(s):  
Qi Zhang ◽  
Zheng Yi Jiang ◽  
Guo Liang Xie ◽  
Dong Bin Wei ◽  
Jing Tao Han
Keyword(s):  
Cast Iron ◽  
Carbon Steel ◽  
Hot Rolling ◽  
Low Carbon Steel ◽  
Interfacial Zone ◽  
Low Carbon ◽  
Significant Difference ◽  
Composite Casting ◽  
The Matrix ◽  
Gleeble 3500

A cast iron/low carbon steel sandwich-structured bimetal fabricated through composite casting, followed by hot rolling and hot compression (40% reduction) in a vacuum, and water quenched using Gleeble 3500 thermomechanical simulator. The microstructure of a predominantly martensitic structure is transferred to a matrix with an amount of austenite. The measured results show that the macro-hardness is significantly lower due to the evolution of matrix. A considerable amount of secondary carbides were precipitated from the matrix. This study also shows that a significant difference in the value of coefficient of friction (COF) at the end when hot rolling (HR) was tested under three sets of sliding wear conditions, while those for hot rolling and heat treatment (HT) tends to be merged. An increased wear resistance of interfacial zone is expectable.

Damage Identification of Low Carbon Steel under Tensile Based on Elastic Modulus

2014 ◽  
Vol 1061-1062 ◽  
pp. 3-6
Author(s):  
Yu Jun Xue ◽  
Shuang Shuang Liu ◽  
Ji Shun Li ◽  
Fang Yang
Keyword(s):  
Elastic Modulus ◽  
Carbon Steel ◽  
Tensile Test ◽  
Damage Identification ◽  
Testing Machine ◽  
Low Carbon Steel ◽  
Tensile Specimen ◽  
Low Carbon ◽  
Machine Loading ◽  
Tensile Process

Tensile test of low carbon steel was carried out on a universal electronic testing machine. Loading and strain test data of low carbon steel was acquired by means of the tensile test. Based on the measured tensile specimen data, elastic modulus of low carbon steel was calculated. It was found that elastic modulus of low carbon steel varied during tensile process. The damage of low carbon steel under tensile was identified by the calculation of elastic modulus.

scholarly journals The Effect of Current Strength Towards ABREX Steel 400 Pulling Strength by Using SMAW Welding with Electrode E7018

Teknomekanik ◽  
2020 ◽  
Vol 3 (2) ◽  
pp. 36-42
Author(s):  
Muhammad Rizki ◽  
Nelvi Erizon ◽  
Budi Syahri ◽  
Rodger Eliab Jr
Keyword(s):  
Tensile Strength ◽  
Carbon Steel ◽  
Testing Machine ◽  
Low Carbon Steel ◽  
Welding Current ◽  
Current Strength ◽  
Low Carbon ◽  
Test Device ◽  
Metal Welding ◽  
A Current

The aim of this study is to determine the effect of variations in welding current strength on the tensile strength of ABREX 400 steel weld joints. The results of this study are expected to give contribution toward the world of metal welding, especially low carbon steel metal welding which will later be beneficial for the development of the metal industry and technology. The method used in this research was the experimental method. In addition, the process of welding the material used SMAW welding and the type of seam V connection and the variations in the current strength used are 90 A, 100 A, and 110 A. The specimen used was a TRS 400 low carbon steel plate with a thickness of 10 mm and the electrode used was the E7018 electrode Ø 3.2 mm. The standard specimen used was ASTM-8 and the test was carried out using the Universal Testing Machine tensile test device. As a result, the research showed that the tensile strength at a current of 90 A was 588.91 N / mm2, a current of 100 A was 570.56 N / mm2, and a current of 100 A was 545.17 N / mm2. Based on the results of the research, it can be concluded that welding using a current strength of 90 A produces the highest tensile strength value, namely 588.91 N / mm2 compared to currents of 100 A and 110 A.

Effect of Heat Treatment on Microstructure and Hardness of Internal Crack Healing in a Low Carbon Steel

2017 ◽  
Vol 730 ◽  
pp. 3-7 ◽  
Author(s):  
Rui Shan Xin ◽  
Qing Xian Ma ◽  
Wei Qi Li
Keyword(s):  
Heat Treatment ◽  
Carbon Steel ◽  
Testing Machine ◽  
Low Carbon Steel ◽  
Internal Crack ◽  
Low Carbon ◽  
Crack Healing ◽  
Material Source ◽  
The Matrix ◽  
Healing Temperature

The effect of heat treatment on microstructure and hardness of internal crack healing in a low carbon steel was studied. The internal cracks were produced into the samples by a drilling and compression method. The microstructure of crack healing zone was examined using optical microscopy (OM) and scanning electron microscopy (SEM). The hardness of crack healing zone was measured using a Vickers micro-hardness testing machine (FM-800). The results show that healing temperature plays a more significant role in internal crack healing than holding time. Compared as-quenched samples with as-normalized samples under the same healing parameters, it is found that cooling speed is also an important factor for internal crack healing. The migration and enrichment of iron atoms provide material source for recrystallization and grain growth of crack healing zone. The existence of micro-voids leads to the hardness of the ferrite in the crack healing zone lower than that in the matrix.

scholarly journals Kinetic Study of Oxide Growth at High Temperature in Low Carbon Steel

Metals ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 147
Author(s):  
Sixtos Antonio Arreola-Villa ◽  
Héctor Javier Vergara-Hernández ◽  
Gildardo Solorio-Diáz ◽  
Alejandro Pérez-Alvarado ◽  
Octavio Vázquez-Gómez ◽  
...  
Keyword(s):  
High Temperature ◽  
Carbon Steel ◽  
Kinetic Parameters ◽  
Oxide Layer ◽  
Oxidation Kinetic ◽  
Low Carbon Steel ◽  
Surface Oxidation ◽  
Parabolic Type ◽  
Measuring System ◽  
Low Carbon

High-temperature surface oxidation kinetics were determined for low-carbon steel using a Joule heating device on hollow cylindrical specimens. The growth of the oxide layer was measured in situ between 800 and 1050 ∘C under isothermal oxidation conditions and in an air laboratory atmosphere (O2 = 20.3% and humidity = 42%). Through a laser and infrared measuring system, the expansion and temperature were measured continuously. From the data acquired, the oxidation kinetic parameters were obtained at different temperatures with a parabolic-type growth model to estimate the rate of oxide layer generation. The convergence degree of the data fitted with the oxidation model was acceptable and appropriately correlated with the experimental data. Finally, comparisons were made between the estimated kinetic parameters and those reported in the literature, observing that the activation energy values obtained are in the range of the reported values.

scholarly journals On a Creep Testing Machine and Creep Test Results on Low-Carbon Steel

1953 ◽  
Vol 2 (3) ◽  
pp. 47-51 ◽  
Author(s):  
Toshio NISHIHARA ◽  
Shuji TAIRA ◽  
Kichinosuke TANAKA ◽  
Kazuo HIRONAKA
Keyword(s):  
Carbon Steel ◽  
Creep Test ◽  
Testing Machine ◽  
Low Carbon Steel ◽  
Creep Testing ◽  
Test Results ◽  
Low Carbon

scholarly journals Analisis Sifat Fisik dan Mekanik Sambungan Las Oxy-Acetylene pada Pelat Baja Karbon Rendah dengan Variabel Nyala Torch Karburasi

2017 ◽  
Vol 1 (2) ◽  
pp. 1
Author(s):  
Andika Wisnujati ◽  
Ahmad Nurhuda
Keyword(s):  
Carbon Steel ◽  
Steel Plate ◽  
Testing Machine ◽  
Low Carbon Steel ◽  
Maximum Temperature ◽  
Low Carbon ◽  
Butt Weld ◽  
Universal Testing ◽  
Different Dimensions ◽  
Welding Joints

<p>Oxy-acetylene welding is widely used in small workshops for car body repair, automobile and motorcycle exhaust, and other improvements using a maximum temperature of 3000oC that can not be done through another process. The purpose of this study was to analyze the effect of torque oxyacetylene flame carburizing on the physical-mechanical properties of low carbon steel plate welding joints. The method employed by using a low carbon steel plate 2 (two) pairs in a butt weld immension of 300 mm x 75 mm x 1 mm. After welding with oxy-acetylene in torch carburizing flame, the specimens were examined through physical observation including microstructure and echanical properties. Micro hardness vickers (VHN) was used to evaluate the harness and tensile properties was determine using the universal testing machine. In the microstructure testing, there is a pearlite and ferrite whose become different dimensions as it is affected by the heat and air pressure of the weld. The result of tensile strength specimen A 174,6 N/mm2 and specimen B 157,65 N/mm2. While the vickers test obtained the highest hardness that is 152.5 VHN in the welding area<em>.</em></p>

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