Roller-bottom type normalizing furnace bottom-roller changing method

A replacement method and furnace bottom roller technology, applied in furnaces, heat treatment furnaces, furnace types, etc., can solve the problems of wasting manpower, material resources and time, unable to keep the temperature in the furnace, reducing production efficiency, etc., to save production costs and shorten production. Replacement time, the effect of improving production efficiency

CN101575665AInactive Publication Date: 2009-11-11CHONGQING IRON & STEEL (GRP) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2009-11-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a roller-bottom type normalizing furnace bottom-roller changing method, which adopts a method of coaxially arranging new and old bottom rollers of a furnace, maintaining balance to hoist and rotating by 180 degrees for transposition; the method is simple and convenient to be operate, directly rotates the new bottom roller of the furnace to the position of the bottom roller of the furnace needed to be changed, and does not need to dismount the body of the furnace; therefore, the roller-bottom type normalizing furnace bottom-roller changing method can implement changing under the situation of maintaining the temperature inside the furnace and does not need to raise the temperature again, thus being capable of saving the product cost and improving the production efficiency. As the complex hoisting out and hoisting in processes are not needed, the changing time for the bottom roller of the furnace can be greatly shortened, which only needs about 6 hours, thereby being capable of ensuring the normal running of production to the largest extent, saving the manpower and material resources for changing the bottom roller of the furnace and improving the working efficiency for changing the roller.
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Description

technical field

[0001] The invention relates to a method for maintaining a roller hearth normalizing furnace, in particular to a method for replacing bottom rollers of a roller hearth normalizing furnace. Background technique

[0002] The normalizing furnace is equipment used for heat treatment of steel plates. It is usually installed at the back of the medium and heavy plate production line to continuously heat treat steel plates. It is an important equipment for medium and heavy plate factories to produce high-quality and thick steel plates. The normalizing furnace is divided into two types according to the transmission mode: roller hearth type and stepping type. The bottom of the roller hearth type normalizing furnace is equipped with hearth rollers, and the assembly line operation of the plate is completed by driving the hearth rollers. Damaged hearth rollers will affect the quality of the plate. Normal transmission will adversely affect the steel plate heat treatment of...

Examples

Embodiment Construction

[0017] figure 1 It is a schematic diagram of the replacement process of the present invention, figure 2 It is a longitudinal section view of the load-bearing sleeve, as shown in the figure: the method for replacing the hearth roller of the roller hearth type normalizing furnace in this embodiment includes the following steps:

[0018] a. Disconnect the hearth roller 2 that needs to be replaced in the roller hearth type normalization furnace from the power input device, and remove the power input end bearing and bearing seat 6 and the passive end bearing and bearing seat 5;

[0019] b. The passive end roll neck of the new hearth roll 1 is opposite to the end face of the passive end roll neck of the hearth roll 2 to be replaced and coaxially arranged so that the passive end roll neck of the new hearth roll 1 and the hearth roll to be replaced 2 The radial fixed fit of the passive end roll neck; in this embodiment, the radial fixed fit between the passive end roll neck of the n...