Tribological Technology in Sheet Metal Forming

<p>1．Direct Observation of Lubrication Behavior</p>

<p>1.1&nbsp; Direct Observation in Drawing between Flat Dies</p>

<p>1.2&nbsp; Direct Observation in Sheet Drawing</p>

1.3&nbsp; Lubro 3D Measurement of Oil Film Thickness of Interface<p></p>

<p>2．Friction Behavior in Drawing between Flat Dies</p>

<p>2.1&nbsp; New Tribo-Simulator Controlled by Computer</p>

2.2&nbsp; Effect of Lubricant Viscosity and Additive on Coefficient of Friction<p></p>

<p>2.3&nbsp; Effect of Yield Stress on Coefficient of Friction</p>

<p>2.4&nbsp; Effect of Bulk Deformation of Specimen on Coefficient of Friction</p>

<p>2.5&nbsp; Effect of Back Tension on Coefficient of Friction</p>

<p>3.&nbsp; Friction Behavior in Flat Sliding </p>

<p>3.1&nbsp; Apparatus and Characteristic of Flat Sliding</p>

<p>3.2&nbsp; Effect of Surface Topography on Coefficient of Friction of Steel Sheet</p>

<p>3.3&nbsp; Effect of Contact Length on Coefficient of Friction of Steel Sheet</p>

<p>3.4&nbsp; Friction Behavior in Flat Sliding of Plated Steel Sheet</p>

<p>4．Friction Behavior in Repeatedly Flat Sliding</p>

<p>4.1&nbsp; Apparatus and the Characteristic</p>

<p>4.2&nbsp; Effect of Yield Stress on Coefficient of Friction</p>

<p>4.3&nbsp; Friction Behavior of Repeatedly Flat Sliding of Plated Steel Sheet</p>

<p>5．Friction Behavior in Tension-Bending</p>

<p>&nbsp;5.1&nbsp; Surface Behavior of Specimen with Smooth Surface in Sliding under Tension-Bending </p>

<p>&nbsp;5.2&nbsp; Surface Behavior of Specimen with Dull Surface in Sliding under Tension-Bending</p>

<p>5.3&nbsp; Direct Observation of Micro-Contact Behavior at Interface in Sliding under Tension-Bending</p>

<p>6．Friction Behaviors in Ironing</p>

<p>&nbsp;6.1&nbsp; Coefficient of Friction by Fundamental Tribo-Simulator</p>

<p>&nbsp;6.2&nbsp; Coefficient of Friction of Commercial Oil by New Tribo-Simulator</p>

<p>7．FEM Analysis in Friction Behavior in Deep Drawing</p>

<p>7.1&nbsp; Measurement of Punch Load in Deep Drawing</p>

<p>7.2&nbsp; FEM Analysis of Punch Load in Deep Drawing </p>

<p>&nbsp;7.3&nbsp; Effect of Friction Behavior on Formability in Deep Drawing </p>

<p>8.&nbsp; Tribological Numerical Modeling in Sheet Drawing</p>

<p>8.1&nbsp; Coefficient of Friction</p>

<p>8.2&nbsp; New Coefficient of Friction</p>

<p>8.3 Tribological Numerical Modeling for Coefficient of Friction in Sheet Drawing</p>

<p>8.4&nbsp; Tribological Numerical Modeling in Sheet Drawing</p>

<p>8.5&nbsp; Numerical Calculation of Coefficient of Friction</p>

9．Simulation of Seizure in Sheet Metal Forming<p></p>

<p>9.1&nbsp; Simulation of Seizure in Flat Sliding Test</p>

<p>9.2&nbsp; Simulation of Seizure in Repeatedly Flat Sliding Test</p>

&nbsp;9.3&nbsp; Simulation of Seizure in Ironing<p></p>

<p>10.&nbsp; Lubrication in Hot Stamping </p>

<p>10.1&nbsp; Development of Tribo-Simulator for Lubrication in Hot Stamping</p>

<p>10.2&nbsp; Lubrication in Hot Stamping of Aluminum-Coated 22MnB5 Steel</p>

&nbsp;10.3&nbsp; Friction Behavior in Hot Stamping of AA7075 Aluminum Alloy<p></p>

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