A local heat treatment annealing device and method for blast furnace hot blast furnace shell

A local heat treatment and annealing device technology, applied in the field of heat treatment, can solve problems such as welding residual stress of the furnace shell, achieve the effect of preventing frequent cracking, eliminating residual stress, and ensuring safe and stable operation

Active Publication Date: 2019-10-08
SHOUGANG CORPORATION
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a local heat treatment and annealing device and method for blast furnace hot blast stove shell, which solves or partially solves the technical problem of residual stress in the furnace shell welding in the prior art during the hot blast stove shell replacement process

Method used

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  • A local heat treatment annealing device and method for blast furnace hot blast furnace shell
  • A local heat treatment annealing device and method for blast furnace hot blast furnace shell
  • A local heat treatment annealing device and method for blast furnace hot blast furnace shell

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Embodiment Construction

[0021] see Figure 1-2 , a local heat treatment annealing device for a blast furnace hot blast stove shell provided by an embodiment of the present invention, there are welds between the furnace shells 1, and the local heat treatment annealing device for a blast furnace hot blast stove shell includes: a temperature control mechanism, a heating mechanism 2 And temperature detection mechanism 3.

[0022] The heating mechanism 2 is connected with the temperature control mechanism, and the heating mechanism 2 is closely attached to the outer wall of the furnace shell.

[0023] The temperature detection mechanism 3 is connected with the temperature control mechanism, the temperature detection mechanism 3 is arranged between the heating mechanism 2 and the furnace shell 1, and the temperature detection mechanism 3 is arranged at the weld of the weld seam. In the groove opened on the road.

[0024] Wherein, the temperature control mechanism receives the temperature signal sent by t...

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Abstract

The invention discloses a local heat treatment annealing apparatus and method for a blast furnace / hot-blast stove casing, which belongs to the technical field of heat treatment. The local heat treatment annealing apparatus for the blast furnace / hot-blast stove casing comprises a temperature control mechanism, wherein a heating mechanism is connected with the temperature control mechanism, and theheating mechanism is closely fit to an outer wall of the casing; a temperature detection mechanism is connected with the temperature control mechanism, the temperature detection mechanism is arrangedbetween the heating mechanism and the casing, and the temperature detection mechanism is arranged in a groove formed in a weld bead of a weld seam. By adopting the local heat treatment annealing apparatus and method, a replaced casing part of the hot-blast stove can be locally subjected to heat treatment annealing so as to eliminate residual welding stress of the casing, thereby ensuring the safeand stable operation of the hot-blast stove and the long service life of the casing.

Description

technical field [0001] The invention relates to the technical field of heat treatment, in particular to a local heat treatment annealing device and method for a blast furnace hot blast stove shell. Background technique [0002] The hot blast stove shell is an important part of the blast furnace system engineering. The stable and safe operation of the hot blast stove is the foundation for the smooth operation of the blast furnace. However, as the smelting intensity of the blast furnace and the oxygen enrichment level of the blast furnace increase, the shell cracking of the hot blast furnace occurs frequently, which brings hidden dangers to safe production and seriously affects the stability of the blast furnace. The cracking of the hot blast stove shell is mainly caused by stress corrosion, the tension generated by chemical corrosion and air supply pressure (0.4MPa), and the residual stress generated during welding and installation are the main influencing factors. [0003]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D9/50C21D1/26C21D11/00
Inventor 王伟陈辉武建龙熊军赵君岩于鹏宋云山孙健梁海龙马泽军丁旭孙汉伟王建李转运贾国利杨晓婷
Owner SHOUGANG CORPORATION
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