Evaluation of scorpion body formability by plastic lubrication surface treatment
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In cold forging, the lubricant relatively plays a role of reducing the processing load because it reduces the friction between the mold and the processing material. As a result, the lubricant improves the processing limit and uniformly deforms the inside of the material, thereby obtaining good metal flow. This study is about an environmentally friendly method of lubricating by applying a film treatment solution to the surface of the target product instead of the conventional phosphate film treatment. In order to develop a onecomponent lubricant that is performed in one process, a comparative analysis is performed on Single-A (black), Single-B (white), and phosphate film treatment. Single-A and Single-B are single-component lubricants under development, and a friction test was performed using a servo press for comparative analysis with the phosphate film treatment used in the existing field. For the friction test, a double cup friction test, which is a forward and backward extrusion method, was performed and the forward and backward extrusion length ratio was measured. By performing CAE analysis, a graph of the friction factor according to the forward and backward extrusion length ratio could be obtained, and from the result, the friction factor according to each lubrication condition could be obtained. In this study, the friction factor obtained from the test was applied to the scorpion body part, an automobile part, and finally, the formability according to the friction factor was evaluated.
Abstract
In cold forging, the lubricant relatively plays a role of reducing the processing load because it reduces the friction between the mold and the processing material. As a result, the lubricant improves the processing limit and uniformly deforms the inside of the material, thereby obtaining good metal flow. This study is about an environmentally friendly method of lubricating by applying a film treatment solution to the surface of the target product instead of the conventional phosphate film treatment. In order to develop a onecomponent lubricant that is performed in one process, a comparative analysis is performed on Single-A (black), Single-B (white), and phosphate film treatment. Single-A and Single-B are single-component lubricants under development, and a friction test was performed using a servo press for comparative analysis with the phosphate film treatment used in the existing field. For the friction test, a double cup friction test, which is a forward and backward extrusion method, was performed and the forward and backward extrusion length ratio was measured. By performing CAE analysis, a graph of the friction factor according to the forward and backward extrusion length ratio could be obtained, and from the result, the friction factor according to each lubrication condition could be obtained. In this study, the friction factor obtained from the test was applied to the scorpion body part, an automobile part, and finally, the formability according to the friction factor was evaluated.