Mono-block casting mould system for large-scale cast steel supporting roller and casting method thereof

It is a technology of integral casting and backup rolls, which is used in manufacturing tools, casting equipment, cores, etc. It can solve the problem of large axial shrinkage of backup roll blanks, difficult to control chemical element segregation, shrinkage and porosity in the core of backup rolls, etc. problems, to achieve the effect of improving the feeding efficiency of the riser, shortening the pouring time, and avoiding shrinkage cracks.

Active Publication Date: 2014-03-26
TIANJIN HEAVY EQUIP ENG RES +1
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Problems solved by technology

[0004] However, the problems of integrally cast cast steel backup rolls are: 1) Due to the large mass, the weight of the molten steel is heavy, and the casting is difficult; 2) The solidification time of the backup roll is long, and the segregation of chemical elements is difficult to co...

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  • Mono-block casting mould system for large-scale cast steel supporting roller and casting method thereof
  • Mono-block casting mould system for large-scale cast steel supporting roller and casting method thereof
  • Mono-block casting mould system for large-scale cast steel supporting roller and casting method thereof

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Embodiment Construction

[0036] Below in conjunction with specific embodiment, the essence of the present invention is exemplified, but the specific details of the embodiment are only to illustrate the present invention, and do not represent all technical solutions under the conception of the present invention, so it should not be interpreted as limiting the general technical solution of the present invention, with Simple changes or replacements of technical features with the same or similar technical effects fall within the protection scope of the present invention.

[0037] First introduce the mold system provided by the present invention, which includes a set of combined molds and a set of pouring systems. Combined mold structure such as figure 1 As shown, it includes riser sand mold 2, upper roll neck sand mold 3, sliding roll neck iron mold 4, roll body iron mold 5, lower roll neck iron mold 6, first pouring system 7, second pouring system 8, etc. part. The casting 1 is formed in a core cavity ...

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Abstract

The invention relates to a mono-block casting mould system for a large-scale cast steel supporting roller and a casting method thereof. The system and the method are suitable for mono-block casting of cast steel supporting roller with a weight of 200 tons or more. The system and the method are different from the conventional technology, adopt a bottom-pouring and double-pouring system, a simple and practicable heat-insulation riser technology and a long nozzle after-teeming technology on the basis of a slide roller mould so as to produce a roller which has the advantages of no crack, capability of relieving element segregation, strong ultrasonic detection penetration ability, and excellent mechanical property of the work layer in the roller body; and especially adopts the long nozzle after-teeming technology so as to successfully solve the problems of segregation and cracks in the large-scale cast steel supporting roller neck.

Description

technical field [0001] The invention relates to the integral casting technology of cast steel support rolls, in particular to the integral casting mold system design and casting method of large cast steel support rolls exceeding 200 tons. Background technique [0002] In the past ten years, with the development of high-speed and automatic rolling mills, the requirements for flat shape control have become more and more excellent, and the rolling conditions have become more and more stringent, which has made it more and more important to improve rolling efficiency, reduce rolling costs, and ensure product quality. question. Therefore, the requirements for the performance of the back-up rolls on the rolling mill are getting higher and higher, and the selection of the optimal production method and material of the back-up rolls is the key to manufacturing high-quality back-up rolls. The manufacturing method of backup roll is mainly divided into two methods: forging and casting. ...

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Application Information

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IPC IPC(8): B22C9/28B22C9/08B22C9/02B22C9/06B22C3/00B21B29/00
Inventor 白云龙王静华张亚才贺昌惠赵席春赵文辉
Owner TIANJIN HEAVY EQUIP ENG RES
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