The method of dismantling the base of finishing mill by exchange method
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A technology of finishing mill and roll box, which is applied in the field of removing the base of the finishing mill by the exchange method, can solve the problems of low machining accuracy, large deformation of the base of the finishing mill, and complexity, and achieves the effect of avoiding uneven force.
Active Publication Date: 2016-01-20
CHINA METALLURGICAL CONSTR ENG GRP
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This method of removing the base of the finishing mill is very complicated, and the deformation of the base of the finishing mill is relatively large, and the machining accuracy is not high after reinstallation
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[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0022] The exchange method is a method for dismantling the base of the finishing mill. The method includes the following steps:
[0023] 1) Remove the roll boxes (generally 10 units) above the base of the finishing mill, clean up the oil stains and sundries on the base, remove the pipelines and platforms around the base, and clean up after dismantling, such as figure 1 , 2 As shown, in the figure 1 is the base of the finishing mill, and 2 is the foundation of the finishing mill.
[0024] 2) Divide into eleven equal parts according to the position of the bolt holes in the base, and remove the concrete under the second, fourth, sixth, eighth, and tenth bolts first; in order not to damage the base, use semi-automatic removal, that is, use an air compressor and a pneumatic pick , gradually remove the concrete along the level of the base...
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Abstract
The invention discloses a method for dismantling a finishing mill base through an exchange method. The method comprises the steps that firstly, a roll-box on the finishing mill base is dismantled; secondly, concrete below a second bolt, a fourth bolt, a sixth bolt, an eighth bolt and a tenth bolt is broken and removed, and after the positions of the concrete below the bolts gets through, the positions nearby the bolts are leveled; thirdly, joist steel is installed at five leveled positions, where the concrete is broken and removed, on the two sides of the finishing mill base, and the space between the joist steel and the finishing mill base is firmly filled with oblique base plates; fourthly, concrete on a first bolt, a third bolt, a fifth bolt, a seventh bolt, a ninth bolt and an eleventh bolt is broken and removed; fifthly, all foundation bolts on the finishing mill base are unscrewed, and then the finishing mill base can be hoisted and dismantled. According to the method, an air compressor and an air pick are used for removing the concrete, that is a semi-automatic manual dismantling mode is adopted, and therefore it is well guaranteed that equipment is not damaged; since the exchange method is adopted for dismantling, the overall equipment can keep a balanced stress state all the time, and the situation that the base deforms due to uneven stress is avoided.
Description
technical field [0001] The invention relates to a method for removing the base of a finishing mill, in particular to a method for removing the base of a finishing mill through an exchange method. Background technique [0002] As the core equipment of metallurgical high-quality rolling line, the finishing mill is mostly imported. The equipment has high processing precision, long service life and convenient maintenance, and is widely used in China. Following the national requirements for environmental protection and energy conservation, most metallurgical enterprises need to relocate outside urban areas, and finishing mills are generally dismantled as a whole for recycling. Since the base of the finishing mill is poured in concrete, coupled with the long length of the equipment, the processing precision is high and the requirements for anti-deformation are high. [0003] The traditional method of dismantling the base of the finishing mill is as follows: firstly, a set of stan...
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