Grinding roller with internal buffer structure
A technology of buffer structure and grinding roller, which is applied in the direction of grain processing, etc., and can solve the problems of affecting the service life of the grinding roller and the surface layer of the grinding roller falling off.
Inactive Publication Date: 2015-04-01
JILIN UNIV
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Problems solved by technology
The cracks continue to develop under the action of alternating stress, and after they penetrate each other, the surface layer of the grinding roller will fall off, which will affect the service life of the grinding roller
Method used
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Embodiment Construction
[0028] The present invention is described in detail below in conjunction with accompanying drawing:
[0029] When the grinding roller is working, the inside of the grinding roller is subject to periodic high-strength extrusion and friction of the material, so that the material inside the grinding roller is subject to the periodic action of normal stress and shear stress. This force is transmitted from the inside of the grinding roller to the surrounding, and the material Extrusion between each other produces a large amount of deformation energy. The wear-resistant layer on the uppermost layer of the grinding roller is a material with high hardness and poor toughness. This material can resist wear and high-strength extrusion very well, but because of its poor toughness , the ability to absorb energy is weak, it is easy to generate cracks inside and eventually cause the roller surface to fall off, affecting the service life of the grinding roller. Below the wear-resistant layer ...
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The invention belongs to the technical field of high pressure abrasion and relates to a grinding roller with an internal buffer structure. The grinding roller consists of a roller core, an irregular buffer layer and a wearing layer which are outwards arranged peripherally in sequence, wherein a bulged buffer structure is uniformly distributed on the upper surface of the irregular buffer layer, and the irregular buffer layer is embedded into the wearing layer through the bulged buffer structure, so that the irregular buffer layer contacts the wearing layer; the bulged buffer structure on the upper surface of the irregular buffer layer is in the shape of a stripe or a grid, and is uniformly arranged; the bulged buffer structure of the irregular buffer layer is embedded into the wearing layer, so that soft and hard materials are alternatively arranged in the wearing layer; the embedded bulged buffer structure can be used for absorbing strain energy, generated due to external force, of the grinding roller, reducing the acting force among internal substances of the grinding roller, and weakening the damage influences of external impact and extrusion on the wearing layer, so that the damage resistance of the grinding roller is strengthened, and the service life of the grinding roller is prolonged.
Description
technical field [0001] The invention belongs to the technical field of high-pressure wear and relates to a grinding roller with a longer service life used under the condition of fatigue wear, in particular to a grinding roller with an internal buffer structure. Background technique [0002] In order to increase the wear resistance of the grinding roller surface, surface surfacing technology is usually used in the manufacture of grinding rollers. A buffer layer is surfacing on the surface of the roller core, and a transition layer is surfacing on the surface of the buffer layer or a wear-resistant layer is directly surfacing. The base material of the roller body is made of low-carbon steel or low-alloy steel with good toughness, and the alloy material with high hardness and good wear resistance is surfacing on the surface. The toughness and hardness of the buffer layer material are generally between the roll core and the wear-resistant layer material. In order to ensure that ...
Claims
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IPC IPC(8): B02C4/30
CPCB02C4/305
Inventor 齐迎春丛茜金敬福于庆宇贺连彬黄莲
Owner JILIN UNIV