Bimetallic Castings in a Chromium–Nickel Stainless Steel Working Surface Layer Configuration with a Grey Cast Iron Base

2014 ◽  
Vol 68 (4) ◽  
pp. 571-580 ◽  
Author(s):  
Tomasz Wróbel ◽  
Jerzy Wiedermann ◽  
Piotr Skupień
Keyword(s):  
Stainless Steel ◽  
Surface Layer ◽  
Cast Iron ◽  
Grey Cast Iron ◽  
Iron Base ◽  
Working Surface ◽  
Grey Cast

scholarly journals Bimetallic Casting: Ferritic Stainless Steel – Grey Cast Iron

2015 ◽  
Vol 60 (3) ◽  
pp. 2361-2365 ◽  
Author(s):  
T. Wróbel ◽  
J. Szajnar
Keyword(s):  
Surface Layer ◽  
Cast Iron ◽  
Base Material ◽  
Grey Cast Iron ◽  
Low Carbon ◽  
High Carbon ◽  
Working Surface ◽  
Mould Cavity ◽  
Grey Cast ◽  
Layer Coating

Abstract The paper presents the problem of obtaining a permanent diffusional joint between the working surface layer and the base part in a bimetallic casting. The studied bimetallic casting was obtained as a result of using the founding method of layer coating directly in the cast process. The casting prepared using this method consists of two fundamental parts, i.e., the grey cast iron base and the working surface layer which constitutes of X6Cr 13 high-chromium stainless steels plate. Based on the obtained results it was confirmed that the decisive phenomena that are needed to create a permanent joint between the two components of the bimetallic casting are carbon and heat transport from the high-carbon and hot base material which was poured into the mould in the form of liquid metal to the low-carbon and cold material of the working layer which was placed in the mould cavity in the form of a monolithic insert.

THE PROPERTIES OF CAST IRON SURFACE LAYERS MODIFIED BY LASER ABLATION MICROMACHINING

Tribologia ◽  
2017 ◽  
Vol 276 (6) ◽  
pp. 59-64
Author(s):  
Wojciech NAPADŁEK ◽  
Adam WOŹNIAK ◽  
Czesław PAKOWSKI
Keyword(s):  
Surface Layer ◽  
Cast Iron ◽  
Laser Micromachining ◽  
Grey Cast Iron ◽  
Linear Wear ◽  
Micro Channels ◽  
Iron Specimen ◽  
Friction Temperature ◽  
Grey Cast ◽  
Ablative Laser

The article presents the results of model laboratory tests, including the measurement of temperature, friction force, and linear wear of the surface layer of samples made of grey cast iron sliding against a steel counterpart. The surface layer of the cast iron specimen was modified using ablative laser micromachining in order to change its macro- and micro-geometry. To produce regular oil micro-reservoirs in a shape of micro-channels, an Nd: YAG laser (λ = 1064 nm, ƒ = 1 – 100 kHz, E = 50 J, P = 50W) with a special focusing system was used. Comparative studies included a grey cast iron specimen subjected to conventional mechanical machining and a specimen modified by ablative laser micromachining. 41Cr4 steel with a hardness of 50 HRC was used as a counterpart. Tribological tests were run in a pin-on-disk (T-11 tribometer) test set-up. The best results in the reduction of friction, temperature, and wear were obtained for samples with oil micro-reservoirs (made of ablative laser texturing) in a shape of micro-channels covering 5% of the entire tribological contact surface.

scholarly journals Design and analysis of disc brake system in high speed vehicles

2021 ◽  
Vol 12 ◽  
pp. 19
Author(s):  
Anil Babu Seelam ◽  
Nabil Ahmed Zakir Hussain ◽  
Sachidananda Hassan Krishanmurthy
Keyword(s):  
Stainless Steel ◽  
Cast Iron ◽  
High Speed ◽  
Heat Dissipation ◽  
Optimal Choice ◽  
Grey Cast Iron ◽  
Brake Disc ◽  
Disc Brake ◽  
Brake Rotor ◽  
Grey Cast

Brakes are the most important component of any automobile. Brakes provide the ability to reduce or bring automobile to a complete stop. The process of braking is usually achieved by applying pressure to the brake discs. The main objective of this research paper is to propose an appropriate design and to perform analysis of a suitable brake rotor to enhance the performance of the high-speed car. The design of the brake disc is modelled using Solid works and the analysis is carried out using Ansys software. The analysis has been conducted by considering stainless steel and grey cast iron using same brake rotor design so that optimal choice of brake disc can be considered. The analysis considered involves static structural analysis and steady state thermal analysis considering specific parameters on brake rotor to increase the life of brake rotor. From the analysis it is found that the performance and life of disc brake depends upon heat dissipation. From the analysis results it can be concluded that grey cast iron has performed better as compared to stainless steel as this material has anti-fade properties which improves the life of the brake rotor.

scholarly journals Possibilities of using 3D printing for surface layers

2018 ◽  
Vol 183 ◽  
pp. 02005
Author(s):  
Agnieszka Dulska
Keyword(s):  
Surface Layer ◽  
Cast Iron ◽  
3D Printing ◽  
Abrasive Wear ◽  
Composite Layer ◽  
Casting Process ◽  
Grey Cast Iron ◽  
Titanium Layer ◽  
Mould Cavity ◽  
Grey Cast

This article describes how to improve the tribological properties of cast iron by local strengthening by titanium layer, directly in the casting process. The research comprised test molds with a titanium (composite) layer. The insert with titanium was made basing on proprietary development of geometric assumptions. The innovation relies on application the 3D printing insert obtaining in SLM (selective laser melting) method. The tests included measurement of resistance to abrasive wear and carried out metallographic, microhardness measurements as the presents detailed geometry of the insert as well. On the basis of obtaining results was stated that there is a possibility of reinforcing surface layer of the grey cast iron casting by using 3D printing scaffold insert in the method of mould cavity preparation. Moreover there was a local increase in hardness and abrasive wear resistance in spite of the precipitation of titanium carbides in surface layer of grey cast iron.

THE EFFECT OF NANOCRYSTALLINE LAYERS ON THE WEAR RESISTANCE OF GREY CAST IRON DURING FRICTION IN AN OIL-ABRASIVE MEDIUM

Tribologia ◽  
2018 ◽  
Vol 282 (6) ◽  
pp. 37-42
Author(s):  
Ihor HUREY ◽  
Tetyana HUREY ◽  
Volodyr GUREY
Keyword(s):  
Surface Layer ◽  
Cast Iron ◽  
Sliding Friction ◽  
Friction Pair ◽  
Grey Cast Iron ◽  
High Rate ◽  
Unit Load ◽  
Abrasive Medium ◽  
Friction Hardening ◽  
Grey Cast

Friction hardening is one of the surface hardening methods with the use of highly concentrated energy sources. In the “tool-treated surface” contact area, the surface layer of a metal is heated at a very high rate to phase transition temperatures, and then it is cooled at a high rate, which results in the formation of hardened nanocrystalline layers. The studies carried out have shown that a hardened nanocrystalline layer is formed in the surface layer in the course of friction hardening of cast-iron (EN-GJL-200) components. The layer thickness is 90–120 μm, and the microhardness is 7–8 GPa. Grain size of the hardened surface layer was equal to 20–40 nm near the treated surface. It is shown that the hardened layer significantly increases the serviceability of the pair “grey cast iron-grey cast iron” during sliding friction in the lubricated-abrasive medium. When increasing the unit load from 2 to 6 MPa, the wear rate of the hardened pair decreased by 2.6–4.2 times in comparison with an unhardened pair. Only one component of the friction pair was hardened.

scholarly journals Static Structural Analysis of Different Materials for Connecting Rod

2021 ◽  
Vol 9 (12) ◽  
pp. 1083-1089
Author(s):  
Sumeet Sivadas
Keyword(s):  
Stainless Steel ◽  
Titanium Alloy ◽  
Cast Iron ◽  
Structural Analysis ◽  
Carbon Steel ◽  
Compressive Load ◽  
Tensile Load ◽  
Grey Cast Iron ◽  
Connecting Rod ◽  
Grey Cast

Abstract: Connecting Rods are an important and irreplaceable part of IC Engines. It is responsible for converting the reciprocating motion of the piston into the rotary motion of the crankshaft. During this process, the connecting rod is subjected to various loads. Therefore, the materials used for connecting rod are also very important. In this paper, a static structural analysis of a connecting rod made of 5 different materials: Forged Steel, Carbon Steel, Stainless Steel, Grey Cast Iron and Titanium Alloy are compared. The connecting rod is analyzed only for the axial compressive load and not the axial tensile load because the tensile load is very much lesser than the compressive load. The connecting rod’s model is developed in FUSION 360 software and then imported to and analyzed using Finite Element Method in the ANSYS 2021 WORKBENCH software. The equivalent stress, total deformation along with the factor of safety for all the materials is found and compared in the analysis and all the results are shown with the help of images and graphs. Keywords: Connecting Rod, FEA, ANSYS WORKBENCH, Structural Analysis, Forged Steel, Carbon Steel, Stainless Steel, Grey Cast Iron, Titanium Alloy.

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