PERFORMANCE OF COATED TUNGSTEN CARBIDE IN MILLING COMPOSITE BOARDS

The purpose of this research was to analyze the performance (wear resistance, surface roughness, chip formation, and noise level) of AlCrN, TiN, and TiAlN coated tungsten carbides in cutting composite boards. The composite boards of wood plastic composite, laminated veneer lumber, andorientedstrand board were cut by the coated tungsten carbide tools in a computer numerical control router. The results show that the differences in structure among the composite boards resulted in the difference in clearance wear, chip formation, surface roughness, and noise level phenomenon. The abrasive materials in wood plastic composite generated the highest clearance wear on the coated carbide tools tested. TiAlN coated carbide tool provided better wear resistance, smoother composite boards surfaces, and lower noise levels.

Download Full-text

THE INFLUENCE OF TECHNOLOGICAL PARAMETERS OF LASER SURFACING ON THE PROPERTIES OF NiCrBSiC-WC COMPOSITES

Тонкие химические технологии ◽

10.32362/2410-6593-2018-13-4-58-66 ◽

2018 ◽

Vol 13 (4) ◽

pp. 58-66

Author(s):

A. E. Zatoka ◽

D. V. Drobot ◽

S. P. Merchev ◽

S. V. Nevezhin ◽

A. S. Gerasimov ◽

...

Keyword(s):

Wear Resistance ◽

Service Life ◽

Tungsten Carbide ◽

Laser Cladding ◽

Composite Coatings ◽

Tungsten Carbides ◽

Technological Parameters ◽

Carbide Composite ◽

Measurement While Drilling ◽

Mechanical And Service Properties

It was investigated the influence of technological parameters of laser cladding on the thickness of the carbide composite coatings with similar composition and properties of matrix and different types of reinforcing inclusions (spherical tungsten carbides (WC) and recycled carbides). Special attention is paid to physical-mechanical and service properties of the composites such as hardness and resistance to abrasive wear. It is established that the thickness of the carbide composite coatings increases with increasing laser power and flow rate of the carrier gas, and with decreasing speed of the laser and the step of cladding. The study showed that at the addition of 50 wt.% WC matrix has smaller hardness values 540-560 HV, which allows to obtain the structure of the carbide composite coatings without cracks. At the same time, at addition of 80 wt.% WC matrix has higher hardness 670 HV, which does not provide the structure without cracks. Resistance of composites NiCrBSiC-WC to cracking, as well as their wear resistance, increases with increasing content of tungsten carbide. The wear resistance of the coatings received from powder Technicord 655-SL, with a reinforcement by recycled carbide, comparable to that for coatings from spherical tungsten carbide Tekmat WC-125. Coatings NiCrBSiCWC, obtained by laser cladding, are used to increase the service life of the equipment telemetering systems, in particular, it is possible to prevent of abrasion and provide of increasing the service life of the contact pads of the equipment for measurement while drilling.

Download Full-text

Monitoring of chip breaking and surface roughness in computer numerical control turning by utilizing wavelet transform of dynamic cutting forces

Proceedings of the Institution of Mechanical Engineers Part B Journal of Engineering Manufacture ◽

10.1177/0954405415601804 ◽

2015 ◽

Vol 231 (14) ◽

pp. 2479-2494 ◽

Cited By ~ 6

Author(s):

Somkiat Tangjitsitcharoen ◽

Kanyakarn Samanmit

Keyword(s):

Surface Roughness ◽

Wavelet Transform ◽

Chip Formation ◽

Cutting Forces ◽

Computer Numerical Control ◽

Numerical Control ◽

Cutting Conditions ◽

Chip Breaking ◽

Frequency Domains ◽

Meyer Wavelet

The aim of this research is to monitor and classify the broken chip signals from the dynamic cutting forces, in order to predict the surface roughness during the computer numerical control turning process utilizing the Meyer wavelet transform to decompose the dynamic cutting forces. The dynamic cutting forces of the broken chips and the surface roughness can be decomposed into the different levels. The levels of decomposed cutting forces can aid to explain the broken chip formation and the surface roughness profile in both time and frequency domains. The experimentally obtained results showed that the surface roughness frequency occurs at the higher level of decomposed cutting forces, especially at the fifth level, although the cutting conditions are changed. However, the chip breaking frequency appears at the lower level, which depends on the cutting conditions and the chip length. The ratio of the fifth level of decomposed feed forces to that of main forces is proposed to predict the surface roughness during the in-process cutting. It is understood that the broken chip formation can be separated clearly and the surface roughness can be predicted well during the cutting, regardless of the cutting conditions.

Download Full-text

Tungsten Carbide-Cobalt Coatings for Industrial Applications

Thermal Spray 2000: Proceedings from the International Thermal Spray Conference ◽

10.31399/asm.cp.itsc2000p0471 ◽

2000 ◽

Author(s):

M. Dorfman ◽

J. DeFalco ◽

J. Karthikeyan

Keyword(s):

Surface Roughness ◽

Wear Resistance ◽

Tungsten Carbide ◽

Gas Flow ◽

Deposition Efficiency ◽

Industrial Applications ◽

Spray Parameters ◽

Coating Characteristics ◽

Steel Substrates

Abstract This paper compares the coating characteristics of two HVOF processes: air-cooled converging-nozzle Diamond Jet (DJ) spraying and Hybrid 2600 air/water-cooled converging/diverging technology. WC-Co coatings were deposited on steel substrates using different combinations of spray parameters, gas flow ratios, and cooling gas types. The coatings were then examined and tested to determine the extent to which microstructure, hardness, surface roughness, wear resistance, and deposition efficiency can be controlled. In addition to investigating process relationships, the paper also addresses the issues of practicality and cost.

Download Full-text

Measurement of roughness on hardened D-3 steel and wear of coated tool inserts

Transactions of the Institute of Measurement and Control ◽

10.1177/0142331220938554 ◽

2020 ◽

pp. 014233122093855

Author(s):

A Bovas Herbert Bejaxhin ◽

G Paulraj ◽

G Jayaprakash ◽

V Vijayan

Keyword(s):

Surface Roughness ◽

Tool Wear ◽

High Speed ◽

High Carbon Steel ◽

Numerical Control ◽

Cutting Conditions ◽

Depth Of Cut ◽

Machining Parameters ◽

Cnc Turning ◽

Coated Carbide

This research investigation has been carried out in Computer Numerical Control (CNC) turning of 40–50 Hardness Rockwell C (HRC) hardened high chromium high carbon steel (HCHCR-D3) specimen for the findings of surface roughness (Ra) and the tool wear. The HCHCR-D3 steel, which has excellent abrasion and wear resistance, is machined with the physical vapor deposition (PVD) coated carbide (CNMG) turning insert nomenclature based on shape, clearance angle, tolerance and type of tool inserts. The coatings preferred are Titanium Nitrate (TiN), Aluminium Chromium Nitrate (AlCrN) and Latuma for the coating thickness of 3–4μm. The varying input parameters of speed and depth of cut under constant feed rate are used as machining parameters for this CNC turning operation. The machined surface characterization and tool wear have been investigated analytically in this manuscript along with the predicted results of effective stresses and temperatures under dynamic cutting conditions in Deform 3D can be related. The outcomes indicate that the depth of cut and the hardening effect (HRC) are the major influencing parameter on surface roughness. Less tool wear and machining time are obtained by the usage of coated CNMG tool insert for high-speed cutting conditions which results in minimization of wear interruption and growth in surface improvements.

Download Full-text

A study on cutting temperature for wood–plastic composite

Journal of Thermoplastic Composite Materials ◽

10.1177/0892705715570988 ◽

2016 ◽

Vol 29 (12) ◽

pp. 1627-1640

Author(s):

Zhijian Pei ◽

Nanfeng Zhu ◽

Yu Gong

Keyword(s):

Imaging System ◽

Cutting Temperature ◽

Cutting Parameters ◽

Processing Parameters ◽

Numerical Control ◽

Wood Plastic Composite ◽

Control Machine Tool ◽

Infrared Thermal Imaging ◽

Plastic Composite ◽

Thermal Imaging System

Wood–plastic composite (WPC) material has been developed rapidly and used widely to replace wood production in recent years. The cutting process of WPC material is the key to directly affect the efficiency of utilization and processing. The infrared thermal imaging system and numerical control machine tool were used in this article to analyze the cutting temperature under different cutting parameters, which was further compared with massoniana wood cutting procedure to provide theoretical basis for WPC material processing. Under certain conditions, the cutting depth was the most important factor on the cutting temperature, followed by spindle speed, while cutting width was the least affected. In the cases of similar processing parameters, although cutting temperature for massoniana wood is always higher than WPCs, the change trends of their cutting temperature are similar. Besides, shear heat moderately affected the cutting temperature during cutting.

Download Full-text

Breaking Load Analysis of Wood Plastic Composite Materials with Surface Roughness Variation

IOSR Journal of Mechanical and Civil Engineering ◽

10.9790/1684-0562932 ◽

2013 ◽

Vol 5 (6) ◽

pp. 29-32 ◽

Cited By ~ 1

Author(s):

Chandra Prakash Giri Chandra Prakash Giri

Keyword(s):

Surface Roughness ◽

Composite Materials ◽

Breaking Load ◽

Wood Plastic Composite ◽

Plastic Composite ◽

Load Analysis

Download Full-text

Comparative In-Vitro Wear Resistance and Surface Roughness of Chairside CAD/CAM Materials

Journal of Dentistry & Oral Disorders ◽

10.26420/jdentoraldisord.2017.1062 ◽

2017 ◽

Vol 4 (3) ◽

Author(s):

Mohamed Shafter

Keyword(s):

Surface Roughness ◽

Wear Resistance ◽

Cad Cam

Download Full-text

COLMONOY No. 83 PTA

Alloy Digest ◽

10.31399/asm.ad.ni0493 ◽

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.

Download Full-text

Investigation into the Effect of Cutting Conditions in Turning on the Surface Properties of Filament Winding GFRP Pipe Rings

Machines ◽

10.3390/machines9010016 ◽

2021 ◽

Vol 9 (1) ◽

pp. 16

Author(s):

Gabriel Mansour ◽

Panagiotis Kyratsis ◽

Apostolos Korlos ◽

Dimitrios Tzetzis

Keyword(s):

Surface Roughness ◽

Glass Fiber ◽

Process Parameters ◽

Filament Winding ◽

Numerical Control ◽

Fiber Reinforced Polymer ◽

Fiber Reinforced ◽

Glass Fiber Reinforced Polymer ◽

Reinforced Polymer ◽

Glass Fiber Reinforced

There are numerous engineering applications where Glass Fiber Reinforced Polymer (GFRP) composite tubes are utilized, such as desalination plants, power transmission systems, and paper mill, as well as marine, industries. Some type of machining is required for those various applications either for joining or fitting procedures. Machining of GFRP has certain difficulties that may damage the tube itself because of fiber delamination and pull out, as well as matrix deboning. Additionally, short machining tool life may be encountered while the formation of powder like chips maybe relatively hazardous. The present paper investigates the effect of process parameters for surface roughness of glass fiber-reinforced polymer composite pipes manufactured using the filament winding process. Experiments were conducted based on the high-speed turning Computer Numerical Control (CNC) machine using Poly-Crystalline Diamond (PCD) tool. The process parameters considered were cutting speed, feed, and depth of cut. Mathematical models for the surface roughness were developed based on the experimental results, and Analysis of Variance (ANOVA) has been performed with a confidence level of 95% for validation of the models.

Download Full-text