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Manufacturing process for centrifugal casting of multi-element eutectic high-alloy rolls

A centrifugal casting and manufacturing process technology, applied in the field of metallurgical rolls, can solve the problems of incompatibility between wear resistance and heat resistance, troublesome production, transportation and storage, and difficult use by users, so as to improve casting performance, small solidification temperature range, The effect of compact crystal structure

Active Publication Date: 2015-06-17
朝阳联强轧辊有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing problems of the background technology are: the strength of the roll is poor, the life is low, the wear resistance and heat resistance cannot be balanced, the production, transportation and storage are quite troublesome, and it is also very difficult for users to use

Method used

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  • Manufacturing process for centrifugal casting of multi-element eutectic high-alloy rolls

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Embodiment Construction

[0017] The present invention will be further described through the embodiments below in conjunction with the accompanying drawings.

[0018] In the embodiment, refer to the accompanying drawings for the specific process steps. The product of the embodiment has the effect of significantly improving the life of the roll after being used in a bar factory of a company: the sixteenth rolling mill for three-wire splitting (the splitting stage, called K3 on site On the rolling mill), the steel passing through a single groove reaches 1366 tons. However, in this bar production line, the steel passing capacity of ordinary rolls in the same position in a single groove is only 300-400 tons (average 370 tons), which improves the life of the rolls by more than 3 times.

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Abstract

The invention relates to a manufacturing process for centrifugal casting of multi-element eutectic high-alloy rolls, and belongs to the technical field of metallurgical rolls. The technical scheme includes that eutectic compositions are selected as materials of a roll working layer, and besides five elements of C, Mn, Si, P and S commonly existing in steel, not less then five alloying elements of Cr, W, Mo, V, Nb, Ti, Al, Cu, B and Mg need to be added into the roll materials to form a multi-element alloying state; carbon content of the roll materials is controlled to be 1.3%-2.8% in mass percent. The manufacturing process is small in solidification temperature range of the eutectic compositions, and particularly suitable for obtaining high-quality castings under the circumstance that feeding conditions are insufficient; the castings are crystallized simultaneously, and optimal in composition uniformity, concentrated cavity shrinkage is formed, metallic yield by casting moulding is high; the metal is solidified at the same time, and casting stress in the process of solidification is minimum; the eutectic compositions in alloy are lowest in melting point, and smelting cost is also low; liquid of the eutectic compositions is best in fluidity; castability is improved, and abrasion resistance and heat resistance are taken into consideration.

Description

technical field [0001] The invention relates to a manufacturing process of a multi-component eutectic high-alloy roll for centrifugal casting, and belongs to the technical field of metallurgical rolls. Background technique [0002] Rolls are important consumption tools in the steel rolling process of the metallurgical industry. The working conditions of the rolls are harsh, they bear heavy loads, and the company takes up a lot of funds. The quality of the rolls significantly affects the performance and indicators of the rolled products, and the consumption of the rolls occupies a large proportion in the production of strip products. Now the domestic production capacity of rolls has exceeded 1 million tons. The quality of the rolls is uneven, the consumption index is different, and the competition in the roll industry is fierce. Roll manufacturing methods in my country currently mainly include the following types: forging rolls, ordinary casting rolls, centrifugal casting r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D13/00B22D19/16C22C38/56C22C38/54C22C38/48
Inventor 那顺桑孙宝平汪允春王素平孙春生张自立
Owner 朝阳联强轧辊有限公司
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