Surfacing compound furnace roller

A furnace roll and surfacing layer technology, which is applied in the field of equipment in the steel rolling heating furnace, can solve the problems of increasing the production cost of steel mills, not meeting the requirements of reuse, recycling, and remanufacturing, and achieves improved service life, simple temperature, and reduced The effect of production costs

Inactive Publication Date: 2009-11-04
杨祥生
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

At present, the products used in the industry are casting rolls. Since it is difficult to avoid segregation in casting, nodules and cracks are very common in use. The service life of imported rolls is 12 months, and the service life of domestic rolls is 10 months. After that, it can only be returned to the furnace for recasting, which greatly increases the production cost of the steel mill, and does not conform to the development principle of "reduction, reuse, recycling, and remanufacturing" of circular economy

Method used

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  • Surfacing compound furnace roller

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Embodiment Construction

[0014] from figure 1 It can be seen from the figure that a surfacing composite furnace roll includes a roll shaft 1 and a roll body 2, and the roll body is fixed on the roll shaft 1 through shoulders 3 at both ends, and the roll shaft 1 and the roll body A thermal insulation layer 4 is arranged between the body 2, air holes 5 are arranged on the body 2, and a welding layer 6 is arranged on the body 2.

[0015] In the production process, the welding material is selected according to the use requirements of the furnace roll product, and the welding material is surfacing on the roller body 2 according to the process specification. During the surfacing welding process, it is melted with the roller body 2 twice to form a finer crystal structure than the cast body. 1. The surfacing layer 6 with a denser structure, the combination of the surfacing layer 6 and the roll body 2 is a metallurgical bonding structure.

[0016] The weight percent of each component of the surfacing layer is...

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Abstract

The invention discloses a surfacing compound furnace roller transporting billets to a heating furnace. The surfacing compound furnace roller comprises a roller shaft and a roller body, wherein, the roller body is fixed on the roller shaft by roller shoulders at the two ends; the roller body is provided with an air hole; a surfacing layer is arranged on the roller body. The invention changes the originally single casting body into a complex of casting, forging and surfacing. During the process of surfacing and compounding, fusion bonding is carried out on the welding materials and the roller body to form the surfacing layer which has a stable material structure and fine crystal grains. In use, the surfacing compound furnace roller eliminates worldwide problems such as roller surface accretion, dead burning and the like in steel industry; simultaneously, surfacing can be continued after the surfacing layer is worn, thus corresponding with the development requirement of recycling economy and improving the service life of the furnace roller.

Description

technical field [0001] The invention relates to equipment in a steel rolling heating furnace, in particular to a roller table for conveying billets in the heating furnace. Background technique [0002] At present, in the walking heating furnaces at home and abroad, the billets are generally loaded and unloaded by roller tables. The material end is sent to the tapping roller table in the furnace at the discharge end step by step, and the heating process of the billet is completed at the same time, and then it is sent out of the heating furnace by the tapping roller table in the furnace for rolling. After decades of development, my country's roll manufacturing industry has achieved good results, but the adjustment of product structure has not fully kept up with the technological progress of the steel industry, the pace of structural optimization and adjustment, and the production capacity of high-end rolls is obviously insufficient. Large-scale steel enterprises such as Baost...

Claims

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Application Information

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IPC IPC(8): F27D3/12C21D9/70B23K9/04B23K9/18
Inventor 杨祥生
Owner 杨祥生
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