MICROSTRUCTURAL EFFECTS IN THE STEEL HWS 1.2379 APPLYING THE PROCESS OF PLASMA TRANSFERRED ARC PTA.

2012 ◽  
Vol 1381 ◽  
Author(s):  
A. Aguirre ◽  
F. García ◽  
J. Acevedo ◽  
J. Andrade
Keyword(s):  
Wear Rate ◽  
Filler Metal ◽  
Industrial Sector ◽  
Great Success ◽  
Plasma Transferred Arc ◽  
Microstructural Effects ◽  
Transferred Arc ◽  
Pin On Disk ◽  
Interface Line ◽  
Wear Tests

ABSTRACTAt present, the industrial sector requires the recovery of tool steel components subjected to severe wear which are built with steel HWS these have the same properties in all tribology directions and have great success in building tooling. In this paper, we recover the previously HWS steel machining with a fillet of 2mm caused by the metallurgical recovery of the component, applying the process of plasma transferred arc PTA which has very good fats dilution properties in comparison to other conventional processes currently applied for the recovery of tooling, such as GTAW, SMAW, SAW. The experiment was conducted with input D2 and M2 with one and two welding seams, making the assessment metallography, hardness and wear tests pin-on-disk. Finding a decrease in the hardness of the interface line, according to the evaluation of wear pin-on-disk, had a higher wear rate of the filler metal in the M2 D2.

Self Lubricating Composite Coatings Containing TiC–MnS or WC-MnS Compounds Prepared by the Plasma Transferred Arc (PTA) Technique

2010 ◽  
Vol 132 (3) ◽  
Author(s):  
P. Skarvelis ◽  
G. D. Papadimitriou ◽  
M. Perraki
Keyword(s):  
Steel Substrate ◽  
Composite Coatings ◽  
Substrate Material ◽  
Hard Coatings ◽  
Tungsten Carbides ◽  
Wear Rates ◽  
Plasma Transferred Arc ◽  
Transferred Arc ◽  
Combined Action ◽  
Pin On Disk

Composite coatings containing manganese sulphide as lubricating addition and enhanced with hard carbide particles (TiC, WC) were synthesized on a plain steel substrate using the plasma transferred arc technique. The coatings are well bonded to the substrate, have a thickness of about 1 mm, and are free of any visual defects. They consist mainly of a martensitic or ferritic matrix enhanced with titanium or tungsten carbides and a dispersion of MnS particles. The tribological properties of the composites are assessed using a pin-on-disk device. Both composites possess self lubricating properties, due to the formation of a thin layer of manganese sulphide on their wear tracks. The corresponding friction coefficients vary between 0.25 and 0.28, compared with 0.50–0.60 obtained from similar hard coatings without MnS addition. The wear rates are of the order of 10−5 mm3/m N and are two orders of magnitude lower than those obtained from the substrate material with MnS addition, but without the presence of hard enhancing particles. The wear regime is mild abrasion due to the combined action of both lubricating (MnS) and hard (TiC or WC) particles.

Influence of Cr and Nb on the Overlay Deposited on D2 Steel by Plasma Transferred Arc Process

2014 ◽  
Vol 793 ◽  
pp. 11-16
Author(s):  
F. García-Vázquez ◽  
H.M. Hernández-García ◽  
B. Vargas-Arista ◽  
A. Aguirre ◽  
E.E. Granda-Gutiérrez
Keyword(s):  
Wear Resistance ◽  
Filler Metal ◽  
Substrate Material ◽  
Attractive Alternative ◽  
Plasma Transferred Arc ◽  
Hardness Tests ◽  
Wide Range ◽  
Transferred Arc ◽  
Metal Microstructure ◽  
D2 Steel

Among the different surface treatments used to improve the wear resistance of metallic materials, plasma transferred arc (PTA) is an attractive alternative to conventional techniques due to the intrinsic properties of its higher deposition rate, lower heat input and especially for the wide applicability of materials. The wide range of materials makes it possible to produce metallurgical bonding between the hardfacing layer and substrate material with very low dilution and distortion. Weld deposits are characterized by less level of inclusions, oxides, discontinuities and wear resistance. Metal-mechanic industry continuously requires recovering tool steel components subjected to severe wear. In this research Fe-based filler metal was deposited on D2 steel by using plasma transferred arc (PTA) process. The influence of Cr and Nb on Fe-based filler metal microstructure was investigated using scanning electron microscopy (SEM). In order to evaluate the mechanical properties were performed wear and hardness tests. The wear resistance and hardness values were compared with the results of a weld bead using nickel-based filler metal.

scholarly journals Wear of MgO-CaO-SiO2-P2O5-F-Based Glass Ceramics Compared to Selected Dental Ceramics

2007 ◽  
Vol 2007 ◽  
pp. 1-5 ◽  
Author(s):  
Jongee Park ◽  
Gürel Pekkan ◽  
Abdullah Ozturk
Keyword(s):  
Friction Coefficient ◽  
Wear Rate ◽  
Glass Ceramic ◽  
Glass Ceramics ◽  
Wear Testing ◽  
Dental Ceramics ◽  
Controlled Crystallization ◽  
Pin On Disk ◽  
Dental Applications ◽  
Wear Tests

Wear of a glass-ceramic produced through controlled crystallization of a glass in the MgO-CaO-SiO2-P2O5-F system has been evaluated and compared to various commercial dental ceramics including IPS Empress 2, Cergo Pressable Ceramic, Cerco Ceram, and Super porcelain EX-3. Wear tests were performed in accord with the ASTM G99 for wear testing with a pin-on-disk apparatus. The friction coefficient and specific wear rate of the materials investigated were determined at a load of 10 N and at ambient laboratory conditions. Microhardness of the materials was also measured to elucidate the appropriateness of these materials for dental applications.

Effect of TiC Content on Friction and Wear Behavior of Al-TiC Composites

2005 ◽  
Author(s):  
Rajnesh Tyagi
Keyword(s):  
Wear Rate ◽  
Volume Fraction ◽  
Wear Behavior ◽  
Normal Load ◽  
Base Material ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Average Coefficient ◽  
Pin On Disk ◽  
Wear Tests

The Al-TiC composites containing three different volume fractions 0.07, 0.12 and 0.18 of TiC have been fabricated and wear characteristics of Al-TiC composites have been investigated under dry sliding. Dry sliding wear tests have been carried out using a pin-on-disk wear tester at normal loads of 9.8, 14.7, 19.6 and 24.5 N and at a constant sliding velocity of 1.0 m/s. The wear rate has been found to vary linearly following Archard’s law. The wear rate is significantly lower in composites as compared to that in base material. The wear mechanism appears to be primarily oxidative under the test conditions taken in the present investigation. Average coefficient of friction also decreases linearly with increasing normal load and volume fraction of TiC.

The mechanism of spraying of paraffin-based fuel by using of plasma transferred arc

2017 ◽  
Vol 23 (1) ◽  
pp. 30-35
Author(s):  
L.A. Bulavin ◽  
◽  
V.Ya. Chernyak ◽  
L.Yu. Vergun ◽  
Yu.F. Zabashta ◽  
...  
Keyword(s):  
Plasma Transferred Arc ◽  
Transferred Arc

Microstructure and Microhardness Characterization of Cr3C2-SiC Coatings Produced by the Plasma Transferred Arc Method

2012 ◽  
Vol 54 (11-12) ◽  
pp. 793-799 ◽  
Author(s):  
Serkan Islak ◽  
Özkan Eski ◽  
Soner Buytoz ◽  
Muzaffer Karagöz ◽  
Joseph Stokes
Keyword(s):  
Plasma Transferred Arc ◽  
Transferred Arc ◽  
Sic Coatings

COLMONOY No. 83 PTA

Alloy Digest ◽  
1995 ◽  
Vol 44 (12) ◽  
Keyword(s):  
Wear Resistance ◽  
Compressive Strength ◽  
Physical Properties ◽  
Tungsten Carbide ◽  
Tensile Properties ◽  
Powder Metal ◽  
Application Method ◽  
Plasma Transferred Arc ◽  
Transferred Arc ◽  
Nickel Base

Abstract COLMONOY No. 83 PTA is a nickel-base hard surfacing alloy containing tungsten carbide. The application method is plasma transferred arc and the application is designed to protect extrusion screws. This datasheet provides information on composition, physical properties, microstructure, hardness, tensile properties, and compressive strength. It also includes information on wear resistance as well as machining and powder metal forms. Filing Code: Ni-493. Producer or source: Wall Colmonoy Corporation.

On data dispersion in pin-on-disk wear tests

Wear ◽  
2002 ◽  
Vol 252 (11-12) ◽  
pp. 1001-1006 ◽  
Author(s):  
S Guicciardi ◽  
C Melandri ◽  
F Lucchini ◽  
G de Portu
Keyword(s):  
Pin On Disk ◽  
Wear Tests
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