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Heat and vibration composite aging treatment method adopting residual heat of casting billets of cast iron rolls

A cast iron roll and aging treatment technology, which is applied in heat treatment furnaces, heat treatment equipment, furnace types, etc., can solve the problems of small aging treatment effect, stress relief ratio, inappropriate process parameter control, material fatigue damage, etc., and achieve the best treatment effect And economic benefits, high efficiency and energy saving effect, and improve the effect of residual stress reduction

Inactive Publication Date: 2011-04-27
DONGHUA UNIV
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

The problem with this method at present is that if the process parameters are not properly controlled, the stress relief ratio of the aging treatment effect is not large, or fatigue damage to the material occurs
For some large cast iron rolls with high rigidity and high natural frequency, to a certain extent, they cannot be processed due to the limitation of the speed and power of the excitation equipment.

Method used

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  • Heat and vibration composite aging treatment method adopting residual heat of casting billets of cast iron rolls
  • Heat and vibration composite aging treatment method adopting residual heat of casting billets of cast iron rolls

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Embodiment Construction

[0014] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0015] The embodiment of the present invention relates to a method of thermo-vibration composite aging treatment using cast iron roll cast slab waste heat, using the cast iron roll cast slab waste heat and its cooling time to carry out vibration aging treatment, including the following steps: (1) when cast iron When the roll slab is cooling in the mold, place it vertically; (2) fill up the riser, install the vibrator platform o...

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Abstract

The invention relates to a heat and vibration composite aging treatment method adopting residual heat of casting billets of cast iron rolls, which is characterized by adopting the residual heat and cooling time of the casting billets to carry out vibration aging treatment on the cast iron rolls. As adopting the composite aging treatment method combining heat aging treatment and vibration aging treatment, the invention not only gives play to the advantages of high efficiency and energy saving of vibration aging treatment and the advantage of stable effects of heat aging treatment but also avoids the shortcomings of various aging treatment, thereby obtaining optimal treatment effects and economic benefits. Because the residual heat and cooling time of the casting billets in the lifecycle ofthe cast iron rolls are fully utilized consciously, the residual stress reduction effect is improved on the basis of not adding energy and time of aging treatment.

Description

technical field [0001] The invention relates to the aging treatment of cast iron rolls, in particular to a thermal vibration composite aging treatment method utilizing waste heat of cast iron roll casting slabs. Background technique [0002] For large cast iron rolls, there is a large residual stress after casting and after each use. In actual production, in order to prolong the service life of cast iron rolls and reduce abnormal failures such as broken rolls, spalling, and cracks, it is necessary to reduce And homogenize the residual stress of the cast iron roll, this process of adjusting the residual stress is called aging treatment. At present, the methods of aging treatment mainly include natural aging treatment, thermal aging treatment and vibration aging treatment. [0003] Natural aging treatment is simple and low in cost. Practice has proved that natural aging treatment has a positive impact on the service life of cast iron rolls. However, the period of natural agin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D9/38C21D5/00
Inventor 范金辉朱世根顾伟生
Owner DONGHUA UNIV
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