A kind of forging process of gcr15 roller sleeve

Abstract

The invention belongs to the technical field of roller sleeve forging, and specifically relates to a forging process of a GCr15 roller sleeve. The pressing ring device used in the process includes a bottom plate, a bracket is fixed at the top of the bottom plate, and a hydraulic cylinder is fixed at the top of the bracket. The output shaft end of the hydraulic cylinder is fixed with a mounting frame, the bottom of the mounting frame is rotatably mounted with a rotating shaft, the surface of the rotating shaft is fixed with a forming roller, the side wall of the mounting frame is fixed with a drive motor, and the output of the drive motor The shaft end is fixedly connected with the rotating shaft, and more than two plate groups are fixed on the top of the bottom plate, and each plate group includes two rectangular plates; the present invention obtains the primary product of the roller sleeve after pressing and shaping the perforated ring, which is The process steps are reduced, the forging time of the roller sleeve is saved, and the dimensional accuracy of the roller sleeve is also ensured. At the same time, the present invention has simple structure, low manufacturing cost, and simplifies the equipment required for the production of the roll sleeve, thus reducing the requirement for the production of the roll sleeve. cost.

Description

technical field [0001] The invention belongs to the technical field of roller sleeve forging, in particular to a forging process of a GCr15 roller sleeve. Background technique [0002] GCr15 is the most commonly used high-carbon chromium bearing steel, which has high hardenability and can obtain high and uniform hardness after heat treatment. Wear resistance is better than GCr9, high contact fatigue strength, good dimensional stability and corrosion resistance, medium cold deformation plasticity, general machinability, poor weldability, sensitive to white spot formation, and has the first type of temper brittleness. [0003] Forging is a processing method that uses forging machinery to apply pressure to metal blanks to cause plastic deformation to obtain forgings with certain mechanical properties, certain shapes and sizes. It is one of the two major components of forging. Forging can eliminate defects such as as-cast porosity produced in the metal smelting process and opti...

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Problems solved by technology

[0004] There are also some technical solutions for forging roller sleeves in the prior art, such as a Chinese patent with application number 2016104546269, which discloses a forging process for GCr15 roller sleeves, which is divided into three steps: heating, forming and heat treatment , by improving the processing technology to extend the length of drawing and punching during forging; this patent improves the straightness of forgings during punching and forging, improves the uniformity of wall thickness, avoids white spots in the sleeve, and improves the performance of forgings , but the patented forming steps require more operations, which makes the forging of the roller sleeve more troublesome, which not only prolongs the forging time, but also increases the cost of forging, thereby increasing the production cost of the roller sleeve

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