Surfacing-free centrifugal combined ultra-high anti-abrasion roll squeezer roller sleeve and manufacturing method thereof

Abstract

The invention discloses a surfacing-free centrifugal combined ultra-high anti-abrasion roll squeezer roller sleeve and a manufacturing method thereof. The roller sleeve comprises a roller sleeve body, wherein the roller sleeve body has a double-layer structure with an inner high-flexibility layer and an outer high abrasion resistance layer; and cast textures are arranged on the surface of the high abrasion resistance layer of the roller sleeve body. The roller sleeve has the characteristics that under the action of centrifugal force, the compactness of the roller sleeve is high, and metallurgical bonding of the inner layer and the outer layer is fully realized; a transitional region is smooth; by control over a cast organization subjected to 'less oxidization' thermal treatment, when the ultra-high abrasion resistance of the outer layer and the high flexibility of the core part are guaranteed, the impact resistance of the outer layer is improved; the centrifugally cast textures are basically the same as that of the outer layer; under the action of the centrifugal force, heavy points in steel liquid are subjected to offshoring segregation, so that the abrasion resistance of the textures is slightly higher than that of the outer layer; due to full metallurgical bonding under the action of the centrifugal force, casting defects such as cracks, impurities and air holes areavoided; ineffective forms such as falling and stripping which are caused by welding micro cracks are completely eliminated; the roller sleeve is maintenance free all the time; the production period is short; and large-scale production is realized.

Description

technical field [0001] The invention belongs to the field of casting, and in particular relates to a surfacing-free centrifugal composite ultra-high wear-resistant roller press roller sleeve and a manufacturing method thereof. Background technique [0002] The existing rolling roller sleeve has a structure of "forged medium carbon steel sleeve + outer surfacing wear-resistant layer". Its preparation method comprises the following steps: [0003] 1. First use medium carbon steel to forge the blank and process it into a steel sleeve; [0004] 2. Then quench and temper the steel sleeve; [0005] 3. Rough machining of steel sleeves; [0006] 4. A wear-resistant layer with a thickness of about 15mm is evenly surfacing on the outer circle of the steel sleeve, and the pattern is surfacing at the same time. [0007] There are problems in the structure and preparation method of the existing roller sleeve: [0008] 1. The thickness of the surfacing layer is thin and the wear resi...

AI Technical Summary

Problems solved by technology

[0009] 2. There is a phenomenon of peeling off blocks

[0010] 3. High maintenance costs

Restoration costs commensurate with purchase price

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