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A catenary type furnace

A catenary, furnace body technology, applied in the direction of furnaces, furnace components, furnace types, etc., can solve problems such as different paths of conveying belt steel, changes in heat treatment temperature conditions, etc.

Active Publication Date: 2013-09-11
CHUGAI RO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, if the back-up roll and the auxiliary roll are separated, the path for conveying the steel strip is different between when it is supported by the back-up roll and when it is supported by the auxiliary roll.
There is a corresponding temperature distribution in the furnace according to the arrangement of burners, etc., but the temperature conditions for heat treatment have changed slightly due to changes in the conveyance path of the strip steel

Method used

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  • A catenary type furnace
  • A catenary type furnace
  • A catenary type furnace

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Embodiment Construction

[0055] Hereinafter, embodiments of the present invention will be described with reference to the drawings. figure 1 and figure 2 The catenary furnace 1 according to Embodiment 1 of the present invention is shown. In the catenary furnace 1, the inside of the furnace body 2 made of a heat-resistant material is heated by a burner not shown, and the metal strip 3 conveyed into the furnace body 2 is continuously heat-treated. figure 1 Indicates a section perpendicular to the conveying direction of the steel strip 3, figure 2 A cross section at the center of the steel strip 3 is shown.

[0056] Such as figure 2 As shown, in the catenary furnace 1, the bottom wall of the furnace body 2 is partially elevated, and a support opening 4 crossing the furnace body 2 and facing downward is formed in this part. Such as image 3 As shown, the bearing opening 4 is formed, for example, by casting a castable ceramic into a substantially cylindrical shape and is closed by a drum 5 rotatabl...

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Abstract

A catenary type furnace comprises a revolving drum (5) which is provided with a two or more rotatable support rollers (7) capable of supporting a strip material, on its circumference longitudinally, and a rotatable subsidiary roller (9) which supports the strip material instead of the support roller when the revolving drum revolves, wherein the revolving drum closes a furnace body, and containing grooves (10) are formed on the revolving drum to contain the subsidiary roller.

Description

technical field [0001] The invention relates to a catenary furnace for continuous heat treatment of steel strips. Background technique [0002] In a catenary furnace for continuous heat treatment of steel strips, it is necessary to support the steel strips in the furnace. For this reason, support rolls are generally installed in the furnace. The back-up roll needs to be replaced due to damage, etc. However, if the operation of the furnace is stopped to replace the back-up roll, a very long stop time is required for cooling and reheating of the furnace, which greatly reduces the operating rate. [0003] Here, as described in Patent Document 1, for example, there is known a technique in which two backup rolls are provided in the longitudinal direction on the circumference of the drum, and the backup rolls supporting the steel strip are replaced by rotating the drum. Since the rotary drum is arranged at the opening of the furnace body, and one side of the support roll is expos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D9/56
CPCF27B9/2469F27D3/026F27B9/2407C21D9/563
Inventor 中川博夫
Owner CHUGAI RO CO LTD