scholarly journals Karakterisasi hasil quenching besi cor pada manufaktur roda gigi mesin tenun

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Andika Wisnujati ◽  
Mirza Yusuf ◽  
Dhini Fatimah
Keyword(s):  
Heat Treatment ◽  
Cast Iron ◽  
Vickers Hardness ◽  
Power Transmission ◽  
Technological Development ◽  
Hardness Test ◽  
Original Form ◽  
Gear Manufacturing ◽  
Cooling Media ◽  
Vickers Hardness Test

The development of science and technology today has a significant influence on technological development and advances in the industrial world. Casting is a product manufacturing technique in which the metal is melted in a furnace and then poured into a mold cavity that is similar to the original form of the cast product to be made. One of the results or products produced from the casting method in this study is a weaving gear component. The gear serves as a short distance power transmission based on the rotation ratio from the main shaft to the drive shaft. This study purpose to determine the effect of the quenching process with oil cooling media on cast iron material. The testing results reveal that the composition test results in 3.18% carbon content, such that the components in this gear manufacturing are used in cast iron, which essentially has the characteristics of being heat-resistant and brittle. It is also necessary to use it as a way of producing materials feeling the continuous impact. The brittling effect of quenching oil heat treatment improves the quality of the materials. It is observed from the research findings that use the Vickers hardness test that the quenching heat treatment shows a substantial difference in score. The highest Vickers hardness test score with quenching oil materials achieving a score of 427.84 VHN is seen. The test exhibits the maximum value of 378.18 VHN in raw materials.Keywords: Cast iron, quenching, chemical composition, Vickers hardness.

scholarly journals The effect of various Co contents on the microstructure and properties of Ti(C,N)-TiB2-Co cermets prepared in situ via reactive hot pressing

2020 ◽  
Vol 12 (5) ◽  
pp. 168781402092571
Author(s):  
Xianrui Zhao ◽  
Ze Yu ◽  
Dunwen Zuo ◽  
Qintao Li ◽  
Mengxian Zhang ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Relative Density ◽  
Vickers Hardness ◽  
Hot Pressing ◽  
Hardness Test ◽  
Reactive Hot Pressing ◽  
Compacting Pressure ◽  
Vickers Hardness Test ◽  
Scanning Electron

Ti(C,N)-TiB2-Co cermets were in situ synthesized, via reactive hot pressing from the Co-Ti-C-BN system, with a Co content ranging from 6 to 22 wt%. The microstructure, relative density, hardness, and fracture toughness of the sintered compacts was investigated by light microscopy, scanning electron microscopy, ceramic densitometry, and Vickers hardness test. The investigations indicate that during hot pressing (compacting pressure = 30 MPa), when the Co content is 14–22 wt%, the metal binder is extruded. Co and Ti are included in the extrudate, breaking the original ratio and deteriorating the properties of the sintered products. As the Co content increases from 6 wt% to 12 wt%, the porosity increases, and the relative density increases from 97.2% to 99.5%. The fracture toughness increases from 6.1 to 6.8 MPa m1/2. The Vickers hardness first increases from 1897 HV10 to the maximum 1960 HV10 and then decreases slightly to 1945 HV10.

Effect of Ageing on Microstructures, Electrical Properties and PALS of Aircraft Al Alloy 2024

2011 ◽  
Vol 319-320 ◽  
pp. 51-59 ◽  
Author(s):  
Abdullah A. Refeay ◽  
N.A. Kamel ◽  
M.A. Abdel-Rahman ◽  
Yahia A. Lotfy ◽  
Emad A. Badawi
Keyword(s):  
Heat Treatment ◽  
Aluminum Alloy ◽  
Electrical Properties ◽  
Hardness Test ◽  
Al Alloy ◽  
Property Development ◽  
2024 Aluminum Alloy ◽  
Different Temperatures ◽  
Lcr Meter ◽  
Vickers Hardness Test

A comprehensive and systematic study using PALS technique, Vickers hardness test and electrical LCR meter were undertaken to follow property development during the recently promoted interrupted ageing treatment for 2024 aluminum alloy. In this work, solution heat treatments at different temperatures were performed in aircraft materials 2024 aluminum alloy. This work describes the development of the dependence of mechanical, electrical properties of 2024 Al-alloys on heat treatment to characterize microstructural changes during heat treatment. PALS, mechanical and electrical testing will be used to measure the features of the material as a function of time for each ageing temperatures.

Finite Element Method for Simulating the Vickers Hardness Test

2014 ◽  
Vol 555 ◽  
pp. 419-424 ◽  
Author(s):  
Victor Popovici ◽  
Adrian Catalin Pavalache ◽  
Mihai Vasile ◽  
Ionelia Voiculescu ◽  
Elena Manuela Stanciu ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Finite Element Modeling ◽  
Vickers Hardness ◽  
Young Modulus ◽  
Hardness Test ◽  
The Finite Element Method ◽  
Simulation Based ◽  
Vickers Hardness Test ◽  
Element Method

The purpose of the present paper is to present a different approach to the finite element modeling of the Vickers hardness test measurement, and to establish a numerical correlation between the Young modulus of a material and its hardness. In order to realize this, calculations were based upon the tensions acquired as a result of the hollow caused in the investigated materials by the indenter the maps of stresses. The present work demonstrates that from the results of the simulation based on the finite element method it is possible to compute a material’s hardness.

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