Rolling/Sliding Wear Behavior of High Carbon Steel Wire Rod (HSWR) of Traction Machine

2008 ◽  
Author(s):  
Beom-Taek Jang ◽  
Seock-Sam Kim
Keyword(s):  
Wear Behavior ◽  
Steel Wire ◽  
High Carbon Steel ◽  
Wire Rope ◽  
Wear Volume ◽  
Steel Wires ◽  
Volume Curve ◽  
Wide Range ◽  
Lubrication Condition ◽  
Worn Surface

Steel wires are critical load-bearing components in a wide range of applications such as elevator, cranes, mine haulage etc. The traction machine of elevator which transmits power to wire rope causes micro-slip between wire rope and sheave during reciprocating action. The lubrication condition of wire rope is also changed due to the lack of grease. This study focuses on the wear behavior of steel wire and effect of both dry and grease conditions by using the rolling/sliding contact wear tester done under various slip ratios and rolling speeds. The experimental results of the wear volume curve against the number of revolutions under the grease condition are compared with the results under dry condition. The worn surface of steel wire and the size of wear particles were observed by SEM. In order to quantify the wear amount of steel wire we established an equation and finally obtained the wear coefficient.

Development of Steel Wire Rope – Reinforced Aluminium Composite for Armour Material Using the Squeeze Casting Process

2011 ◽  
Vol 277 ◽  
pp. 27-35 ◽  
Author(s):  
Dwi Rahmalina ◽  
Bondan Tiara Sofyan ◽  
Bambang Suharno ◽  
Eddy S. Siradj
Keyword(s):  
Squeeze Casting ◽  
Steel Wire ◽  
High Carbon Steel ◽  
Casting Process ◽  
Optical Microscope ◽  
Wire Rope ◽  
Aluminium Composite ◽  
Ballistic Properties ◽  
Semi Solid ◽  
Squeeze Casting Process

Steel wire rope – reinforced aluminium composite - has been developed to improve the ballistic properties and mobility of armour material. Critical to obtaining ballistic resistance is that the materials must be sufficiently hard and strong, especially at the surface where a projectile will first make impact. To obtain this resistance, aluminium alloys can be strengthened by adding Cu and Mg. This research studied the ballistic properties of aluminium composites with varied Cu and Mg content. The matrix used in this study was an Al-7Si master alloy with 0.08-1.03 wt. % Mg and 0.05-3.75 wt. % Cu, both independently and in combination. A high carbon steel wire rope was used as strengthening material. The samples were produced through the squeeze casting process with a pressure of 1 MPa at semi-solid melting temperatures of 590-610 °C. The slab was then rolled for 10 % reduction to increase the hardness. Ballistic testing was performed in accordance with ASTM F1233 by using a 9 mm calibre projectile and 900 direction. Micro structural observation was conducted in the as-cast and ballistic samples, performed with optical microscope and scanning electron microscope (SEM). The results showed that squeeze casting may improve interfacial wettability and reduce void. The increase in Mg resulted in the decline of interfacial voids, but Cu addition tended to increase them. The aluminium armour was able to withstand a 9 mm calibre projectile, although some cracks were visible. The wire rope was not effective in stopping the penetration of a 7.62 mm calibre projectile.

Broken Steel Wire Rope Inspection Based on RBF Neural Network

2012 ◽  
Vol 614-615 ◽  
pp. 1734-1737 ◽  
Author(s):  
Zhen Chen ◽  
Yan Mei Liu
Keyword(s):  
Neural Network ◽  
Detection System ◽  
Rbf Neural Network ◽  
Steel Wire ◽  
Wire Rope ◽  
Experimental Results ◽  
Quantitative Detection ◽  
Design Scheme ◽  
Steel Rope ◽  
Steel Wires

In view of the problem of low detection precision exists in traditional quantitative detection system of broken wire for steel rope, the paper proposed a design scheme of quantitative detection system of broken wire for steel rope based on RBF neural network. The RBF Neural Network was introduced to establish the model of discerning quantitative broken steel wires. Experimental results showed that the method performed well in the identification of damage.

scholarly journals INCREASED VIBRATION ON REFRIGERATOR SHIPS OF B437/11 PROJECT AND TECHNICAL PROPOSALS ON ITS REDUCTION

2018 ◽  
pp. 58-69
Author(s):  
Minas Armenakovich Minasyan ◽  
Aung Myo Thant ◽  
Armen Minasovich Minasyan
Keyword(s):  
Service Life ◽  
Vibration Isolation ◽  
Steel Wire ◽  
Modern Technology ◽  
Wire Rope ◽  
Diesel Generator ◽  
Vibration Isolators ◽  
Wide Range ◽  
Isolation Systems ◽  
The Impact

The paper considers the causes of increased vibration of four auxiliary diesel-generator sets of "Sulzer" 5АL25 type on board nine refrigerated vessels of B437 / 11 project after 15 years of operation. The proposed wide range of possible applications to address the problem of high vibration of diesel generators and motor vessels there were generally implemented upgraded turbocharger brackets, engine sub-frame and supporting spiral-rope vibration isolators in the shock absorption system of the diesel-generator. Four original patented technical solutions have been presented, among which one solution is implemented in 5AL25 diesel generator and 2H 8.5/11 diesel damping systems. There has been offered wide application both wire rope vibration isolators and combined isolators, in which elastic elements are made of nonflammable materials. Wire rope vibration isolators combine high bearing capacity (static loads within 1 N - 50 kN) with high elasticity under dynamic effects; their natural frequencies can drop to 2.5 Hz. Under the worst conditions 75% of the free moving weakens the impact to values that ensure the necessary safety of the object. Experience in designing vibration isolation systems allows to set the maximum range of loads within 15 - 25 g. The vibration isolators made of steel wire rope are practically not affected by the environment, they are made of stainless steel. They effectively operate at temperatures -200°C - +370°C in the presence of oil, dirt, sand, salt fog, etc. They usually have a service life comparable with the service life of the insulated object. Wire rope vibration isolators and combined vibration isolators can be used in all fields of modern technology: shipbuilding, power engineering, automotive, aviation and space industries, etc.

scholarly journals Study on parameters on cutting AAC by wires

2021 ◽  
Vol 4 (1) ◽  
pp. 730-737
Author(s):  
Lưu Thanh Tùng
Keyword(s):  
Feed Rate ◽  
Steel Wire ◽  
Processing Parameters ◽  
Building Product ◽  
Steel Wires ◽  
Wide Range ◽  
Block Dimension ◽  
Aerated Concrete ◽  
The Common ◽  
The Cost

Autoclaved Aerated Concrete (AAC) is a Lightweight, Load-bearing, High-insulating, Durable building product, which is produced in a wide range of sizes and strengths. AAC Blocks is lightweight and when compared to the red bricks, AAC blocks are three times lighter. AAC block is rapidly developing in Vietnam. The block has more advantages such as precast, and easy installation. AAC is produced from the common materials: lime, sand, cement and water, and a small amount of rising agent. After mixing and molding, it is then autoclaved under heat and pressure to create its unique properties. Then, the AAC block will be cut into block brick by steel wire. When cutting the ACC block, the block brick surface must be smooth so that it is unnecessary to mortar. Furthermore, the roughness of the surface must be smaller than 0.1mm to paint the wall easily. The block dimension also need high precision so that the wall will be straight when blocks are superposed. However, in this paper, the roughness of the block surface will be only researched because the roughness will decide the cost, and the dimension decide the estheticism of wall. The block is made by using steel wires to cut big AAC blocks into small blocks. Effects of processing parameters on the performance of the steel wire sawing processes are wire speed, feed rate and tension. Each parameter will affect surface quality with different effects. In addition, these parameters affect each other, which causes scratches on the AAC surface. Experiments will be made to measure the height of roughness with the change of wire speed, feed rate and tension. The best parameters will be found, which helps the AAC manufacturer to obtain the higher quality.

Investigation on Mechanical Properties and Wear Behaviour of Squeeze Cast LM13 Aluminium Alloy Reinforced with Copper Coated Steel Wires

2018 ◽  
Vol 232 (12) ◽  
pp. 1787-1806 ◽  
Author(s):  
Samson Jerold Samuel Chelladurai ◽  
Ramesh Arthanari ◽  
Rohith Selvarajan ◽  
Sujeevan Athanarsamy ◽  
Satheshkumar Arumugam ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Weight Loss ◽  
Aluminium Alloy ◽  
Steel Wire ◽  
Wear Behaviour ◽  
Dry Sliding Wear ◽  
Coated Steel ◽  
Steel Wires ◽  
Worn Surface ◽  
Sliding Distance

Abstract Copper coated steel wires (1–5 numbers) reinforced in LM13 aluminium alloy composites have been prepared using squeeze casting process. Microstructure of composites has been investigated and mechanical properties viz., hardness, tensile strength and ductility have been examined and reported. Dry sliding wear behaviour of composites has been investigated by varying sliding distance and load. Fracture surface of broken tensile specimens and worn surface of wear samples have been investigated using field emission scanning electron microscope (FESEM). The results reveal that copper coated steel wires reinforcement in LM13 aluminium alloy improves the mechanical properties and wear resistance. Average hardness values of 136 BHN and 96 BHN have been observed in steel wire and at the interface of steel wire and aluminium alloy, respectively. Tensile strength of composites increased up to 28% by reinforcing three copper coated steel wires in LM13 aluminium alloy. Dry sliding wear test results reveal that weight loss, wear rate and coefficient of friction decreased with increasing number of copper coated steel wires reinforcement in LM13 matrix. However, weight loss of samples increased with increasing sliding distance and load. LM13 aluminium alloy reinforced with five numbers of copper coated steel wires decreased the weight loss up to 69% as compared to LM13 aluminium alloy tested at 40 N load and a sliding distance of 2500 m. Fracture surface of composites shows broken steel wires and dimples are observed in LM13 matrix. Worn surface of composites shows fine and shallow grooves; whereas delamination is observed in LM13 aluminium alloy. In general, copper coated steel wire reinforcement in LM13 aluminium alloy exhibited better mechanical properties and wear resistance compared to matrix.

scholarly journals PENGARUH CAIRAN ALUMINIZING TERHADAP KEKERASAN KAWAT BAJA

2017 ◽  
Vol 3 (2) ◽  
Author(s):  
Dwi Putranto N ◽  
Dody Prayitno
Keyword(s):  
Room Temperature ◽  
Steel Wire ◽  
Intermetallic Layer ◽  
Hardness Test ◽  
Wire Rope ◽  
Heavy Load ◽  
Steel Wires ◽  
The Wire ◽  
Wire Strand ◽  
The Impact

Wire rope is made from several steel  wires a combined form a strand, a couple of strands twisted around the core to form a steel rope. One example of its usage is on the bridge to provide support for a heavy load. The steel wire is composed of several parts that is, steel wire, core and wire strand. Increasing the hardness of steel wire have the impact, the hardness of the steel wire. In an effort to improve the hardness of steel wire, there are opportunities to increase the hardness of steel wire with aluminizing method. The aim of this research is to find out the hardness of Wire in aluminizing process with alloys Al - Cu - Sn. Moreover to the research also aims to focus on the addition of Sn element in Al - Cu liquid. The methodology research was preceded by spliting wires from the wire rope. After that cut the wire into the sample wire. Then soak the wire into Al - Cu – Sn liquid at a temperature of 700ºC for ± 3 minutes. Elements of Sn which contained in the composition of Al - Cu - Sn vary from 0 % , 10 % and 20 % , while for CU’s component is 10 % and the rest of is Al, and the latter only elements of Al - Sn, without adding Cu element. Wire samples were then take away and cooled at room temperature, then test the wire by using micro hardness test, the test data was analyzed with Anova and finally made a conclusion. The results of this of this research showed that for the violence that occurs in the intermetallic layer shows the increase in value of hardness obtained on steel wire.

Dry sliding wear of a Ni-based superalloy as a function of the aging time.

MRS Advances ◽  
2020 ◽  
Vol 5 (59-60) ◽  
pp. 3091-3102
Author(s):  
Luis E. Gonzalez A. ◽  
Arnoldo Bedolla-Jacuinde ◽  
Eduardo Cortés C ◽  
Francisco V. Guerra ◽  
A Ruiz
Keyword(s):  
Electron Microscopy ◽  
Wear Resistance ◽  
Aging Time ◽  
Wear Behavior ◽  
Dry Sliding Wear ◽  
Vacuum Induction Furnace ◽  
Ceramic Mold ◽  
Wear Volume ◽  
Dry Sliding ◽  
Worn Surface

AbstractFrom the present work, the wear behavior of aged Ni-based superalloy was analyzed under dry sliding conditions. Such alloy was melted in a vacuum induction furnace and cast into a ceramic mold. Then the alloy was solubilized at 1080°C for 4 hours and then aged at 760°C for 4, 8, 16, 24, 48, 72 and 150 hours. The alloy was characterized as-cast and also in the heat-treated conditions by transmission electron microscopy (TEM), scanning electron microscopy (SEM) and X-ray diffraction (XRD). Mechanical characterization included just Vickers hardness and wear resistance under dry sliding conditions by a block on ring configuration according to the ASTM G77 standard. Wear tests were undertaken for 2000 m at a speed of 0.7 ms-1 at two different loads (25 and 78 N). The worn samples were analyzed by an optical profiler to determine the wear volume and by SEM to analyze the worn surface and the microstructure below the worn surface. The main findings indicate the formation of an oxide layer mainly formed by Cr and Ni during sliding. The thickness of such a layer is about 10 μm for short aging times and about 5 μm for longer aging times. For this load, the wear resistance was 50% higher for the shorter aging times than that for the longer aging times. This behavior is described in terms of the thickness of the protecting layer, and on the availability of chromium to form such a layer since it forms Cr23C6 at long aging times. On the other hand, for a load of 78 N the wear behavior is in agreement with hardness. Wear resistance increases with aging time due to the higher precipitation of prime gamma phase.

scholarly journals Impact of Strain Aging Kinetics on the Failure of Thin Steel Wire Ropes

2021 ◽  
Vol 3 (1) ◽  
pp. 12
Author(s):  
Tamás Bálint Mező ◽  
Péter Barkóczy
Keyword(s):  
Carbon Steel ◽  
Strain Aging ◽  
Steel Wire ◽  
High Carbon Steel ◽  
High Strength ◽  
Aging Effect ◽  
Wire Ropes ◽  
Steel Wires ◽  
Thin Carbon ◽  
Kinetics Of

Under quasi-static loading an irregular failure mode of high-strength thin-carbon steel cords were observed after low temperature thermal aging. Character and kinetics of damage in such wire ropes highly depend on the plastic elongation of the steel wires, which is significantly modified by the strain aging effect. In this paper, the static strain aging effect on heavily drawn high-carbon steel wires and their cords is experimentally studied in the 100–200 °C temperature range. Quantitative analysis of the affected strength and strain parameters is given. Kinetics of the aging process is discussed, and based on this, the macroscopic failure mechanism is fundamentally explained.

Friction and Wear Behavior of Pressureless Solid State Sintered SiC

2015 ◽  
Vol 655 ◽  
pp. 27-31
Author(s):  
Han Qin Liang ◽  
Xiu Min Yao ◽  
Hui Zhang ◽  
Xue Jian Liu ◽  
Zheng Ren Huang
Keyword(s):  
Solid State ◽  
Friction Coefficient ◽  
Friction And Wear ◽  
Wear Behavior ◽  
Normal Load ◽  
Great Influence ◽  
Wear Volume ◽  
Friction And Wear Behavior ◽  
Sic Ceramics ◽  
Worn Surface

In the present work, SiC was pressureless solid state sintered with 3 wt% C and 0.6 wt% B4C as sintering additives. The friction and wear behavior of the PSSS SiC ceramics was investigated by using a block-on-ring tribometer. The wear volume and friction coefficient was measured. It is as expected that the friction coefficient increased with the elevation of the normal load and sliding speed. The microstructure of the worn surface was observed, based on which the wear mechanism was analyzed. Different degrees of oxidation during the friction process was found and the degree of oxidation was related to the severity of wear. The normal load was found to exert great influence on the wear of the SSiC ceramics.

On the Measurement of Modulus in Torsion of High Carbon Steel Wire by Torsion Tester

1967 ◽  
Vol 53 (11) ◽  
pp. 1342-1344
Author(s):  
Akira NAKAGAWA ◽  
Akihiro SUZUKI ◽  
Tadatsugu KISHIGAMI ◽  
Norio NAGAI
Keyword(s):  
Carbon Steel ◽  
Steel Wire ◽  
High Carbon Steel ◽  
High Carbon
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