A kind of separator with excellent pore structure and flame retardancy was prepared by a single-side coating method. synchronous improvement in safety performance high electrochemical realized.

Built-up Layer (BUL)/Built-up Edge (BUE) formed on the tool surface can be treated as a protective, thermal barrier or lubricant films especially in extreme severe conditions when machining metal materials, which sustain effective and wear resistance. In order to have thorough understanding of adhesion effect during machining, experiments been carried out investigate performance formation mechanisms adhering layer carbide aluminium alloys A6063, carbon steel S45C difficult-to-cut hardened...

The main objective of this paper is to clarify the formation mechanism built-up layer (BUL) in cutting hardened steel, as BUL formed on tool surface under certain conditions can act a protective layer, increase wear resistance, extend life and so on. Detailed analyses surface, microstructure feature chip inside after steel S45C (H-S45C) were done by Scanning Electron Microscope (SEM). Experimental evidences show that process nucleus rake face. Furthermore, proposed. model based qualitative...

This paper presents a thermodynamic model for studying the energy dissipation processes such as friction, wear, and adhesion phenomenon in order to predict built-up layer (BUL) edge (BUE) formation conditions dry cutting of SUS304 stainless steel. The is composed three parts: extended representative contact (RCM) at tool chip interface, analysis within RCM, growth model. At typical region, RCM characterized by material elements two boundary elements, which support between elements....

Machining process is a typical example of the non-equilibrium phenomenon. The aim this study to investigate influence built-up layer (BUL) on tool wear mechanisms uncoated and coated carbide tools. To how BUL formation affects mechanisms, dry cuttings Inconel 718 with uncoated, PVD CVD tools were conducted. worn cutting analyzed using laser scanning microscopy, electron microscopy probe micro analyzer. It found that can for m rake face under different conditions. At beginning cutting,...

Built-up edge (BUE) formation in machining maintains a profound effect on the cutting operation, such as forces, temperatures, tool wear, life, vibration, surface roughness and geometric dimensions of machined products so on. Recently, attempts have been made to use BUE edge/wedge optimize machining, extend etc. In order clearly understanding formation, experiments were performed aluminum alloy A6063-T5 low carbon steel STKM11A using cemented carbide over wide range speeds. The speed spans...

Due to its physical and mechanical properties, Inconel 718 remains a difficult-to-cut material there is an urgent need develop more sustainable low-cost way machine it. A novel approach for dry cutting by actively purposely utilizing the built-up layer (BUL), which can be called self-protective tool (SPT) method, proposed investigated in detail this paper. Various experiments were carried out using age-treated uncoated cemented carbide tools. The formation condition of BUL, mechanism,...

The machining of difficult-to-machine materials, such as hardened steel, titanium alloys, inconel, and stainless is usually associated with low productivity, high cost, poor surface quality, short tool life. Therefore, improving the machinability materials essential. In this study, development a built-up layer (BUL) under certain cutting conditions was promoted to protect extend life when steel S45C (H-S45C) an uncoated WC-Co tool. dimensions, microstructure, chemical compositions...

There growing demand for a new FEM cutting simulation method capable of dealing with the peculiar friction phenomena that occur on interface between work and tool materials. In this report, we first seek theoretical formula quasi-dislocation motions as model to explain materials by applying dislocation theory. Next, present our deriving frictional stress face from quantum mechanical calculations based above-mentioned model. It uses molecular orbital method, which can only conduct static...

Recently, in order to make positively use of the effect adhesive layer, which works as Build-up edge or Belag on tool surface during machining operation, there have many investigations technique reduce wear cutting tool. However, mechanism rake face is unknown and reason why layer can resist abrasion also unclear.This study aims propose a new crater high-cycle fatigue model depending adhesion established by cluster interface between Tool-Work Piece. By using this we elucidate layer. When...

Dry cutting experiments were carried out to investigate the BUL formation process and its influence on wear of uncoated cemented carbide tool during Inconel 718. The results show that a thin, stable can form rake face as result accumulation workpiece material 718, which protect tool. Concerning flank nose wear, adhesive is major mechanism, but adhering layer formed worn surface decrease wear. It also confirmed quick fall-off unstable adhesion has strong effect notch In addition, mechanism...

In this study, a novel methodology was proposed to investigate the influence of built-up layer (BUL) formation on stress state distribution in primary shear zone (PSZ) using analytical model and particle image velocimetry (PIV) analysis. Orthogonal cutting tests were performed under range uncut chip thicknesses speeds two uncoated cemented carbide tools with different rake angles. A series strain, strain rate, velocity distributions PSZ obtained by PIV Al7075-T6511 used as workpiece....

Built-up Layer (BUL), produced by accumulating workpiece on the tool rake face, has protective effect and smaller depth of overcutting during cutting metal material. The main objective this paper is to clarify influences coating characteristics BUL formation process titanium alloy. Dry cuttings Ti-6Al-4V with three different tools (uncoated, PVD coated, CVD coated carbide tools) were conducted. After tests, observed through laser confocal microscopes (LCM) scanning electron microscopy (SEM)....

Metal contact area is a severe environment during cutting. Therefore, wear mechanism complex and it difficult to be explained. In the past has been proposed that predict approximately by diffusion. But not able respond range from low high temperature. This study aims propose new crater high-cycle fatigue model depending on tool adhesion established surface cluster interface between Tool-Work Piece. When chip flows rake face, discommensurate phase occurs in interface, slides form of...

Built-up layer (BUL) formed on the tool rake face during cutting has protective effect. As BUL can change shape of resulting in variation angle and edge radius, it may have significant influences phenomena such as wear, forces, surface integrity. SUS304 stainless steel is very difficult to cut, leading rapid wear poor quality. It also a high tendency form due its work hardening rate chemical affinity. To actively purposefully utilize BUL, effects size uncoated cemented carbide tools dry were...

Abstract Built-up layer (BUL) formed on the tool rake face during cutting has protective effect. As BUL can change shape of resulting in variation angle and edge radius cutting, it also significant influences phenomena such as wear, forces surface integrity. SUS304 stainless steel is very difficult to cut, leading rapid wear poor quality. It a high tendency form due its work hardening rate chemical affinity. To actively purposely utilize BUL, effects size uncoated cemented carbide tools dry...

In this study, the “surface tension defined from stress” was used to predict change in cutting edge radius tool’s initial-stage wear regime. An analysis of between solids showed that flow material and adhesion phenomenon must occur simultaneously at interface. From experimental simulation results, it confirmed proposed model can be stress distribution acting on tool evaluate workpiece It also verified cutting-edge under a state equilibrium changes based condition. These results indicate...