Self-lubricating method of textured coating of gear cold extrusion die

Abstract

The invention provides a self-lubricating method of a textured coating of a gear cold extrusion die. The method includes the following steps that the coating is deposited, wherein the hard coating isdeposited on the surface of the inner ring of a female die of the cold extrusion die through a PVD technology; the surface is micro-modeled, wherein a micro-texture is prepared on the surface of the hard coating on the inner ring of the female die of the cold extrusion die; a lubricant is prepared, wherein the composite solid lubricant is prepared; and filling of the lubricant is carried out, wherein the surface micro-texture of the hard coating on the inner ring of the female die is filled with the composite solid lubricant. In combination with a surface coating technology, a surface micro-modeling technology, a solid lubricant technology and a lubricant filling technology, the textured coating is prepared on the surface of the gear cold extrusion die for self-lubricating the surface, theanti-wear and friction-reducing performance of the surface of the cold extrusion die is improved, the lubricating effect of the surface of the die is improved, the forming quality is improved, the service life of the die is prolonged, and the problems that in the forming process of the cold extrusion die, the lubricating effect is poor, the die is seriously abraded, and the environment is polluted in a traditional lubricating manner are solved.

Description

technical field

[0001] The invention belongs to the technical field of die surface treatment, and in particular relates to a self-lubricating method for a textured coating of a gear cold extrusion die, which can improve the lubricating performance of the gear cold extrusion die surface and the service life of the die, improve the forming quality of the gear, and reduce the production cost of the enterprise. cost. Background technique

[0002] Cold extrusion is an important production process for manufacturing gears. It has the unique advantages of high quality, high efficiency and low cost, and is being highly valued by the equipment manufacturing industry. However, during the process of cold extrusion forming gears, the contact pressure between the billet and the mold is as high as 1000MPa-2500MPa, resulting in poor lubrication conditions, resulting in a huge friction force between the billet and the die cavity, which not only increases the metal deformation resistance and ...

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