A kind of special quenching oil capable of making large modulus gears self-blackening after quenching and its preparation method

Abstract

The invention discloses dedicated quenching oil capable of enabling large module gears to automatically blacken after quenching and a preparation method of quenching oil, and belongs to the technical field of heat treatment. The quenching oil comprises the following components in parts by mass: 35 to 40 parts of refined base oil, 5 to 8 parts of a cooling compound agent, 0.4 to 0.6 part of a blackening compound agent, 0.3 to 0.7 part of a brightening agent, 0.5 to 0.7 part of a surfactant and 0.03 to 0.05 part of an antioxidant. The quenching oil provided by the invention particularly has a good quenching effect on the large module gears (gears of which the module is 10 mm or above), the deformation can be effectively controlled, ideal hardening layer depth, center hardness and metallographic structures are obtained, the mechanical strength and toughness required by the gears are achieved, the automatic blackening effect of the surfaces can be achieved, the two procedures of heat treatment and surface treatment of metals are perfectly combined, the resources are saved, and the timeliness is improved.

Description

technical field [0001] The invention belongs to the technical field of heat treatment, and more specifically relates to a special quenching oil capable of making large modulus gears blacken after quenching and a preparation method thereof. Background technique [0002] A gear is a mechanical element with teeth on the rim that can continuously mesh to transmit motion and power. The application of gears in transmission has appeared very early. At the end of the 19th century, the principle of generative gear cutting method and special machine tools and cutting tools using this principle appeared one after another. With the development of production, the stability of gear operation was paid more attention. Gears and their gear products are important basic parts of mechanical equipment, and the main transmission parts of most complete sets of mechanical equipment are gear transmissions. China's gear industry is developing rapidly, and the scale of the industry is constantly expa...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of the existing large modulus gear quenching process such as large amount of deformation, inability to complete self-blackening in the quenching process, and uneven film formation on the alveolar surface, the present invention provides a method that can make the large modulus gear spontaneously blacken after quenching. Hei special quenching oil and its preparation method. The quenching oil of the present invention is specially developed for large modulus gears with a modulus greater than 10 mm. It can effectively control deformation and obtain ideal hardened layer depth, core hardness and Metallographic structure, to achieve the mechanical strength and toughness required by the workpiece, and to achieve the effect of automatic blackening of the surface, saving resources, reducing processes, and improving efficiency