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Heating process for sulfuric acid leaking point corrosion resisting band steel

A heating process and sulfuric acid-resistant technology, applied in the field of steel rolling, can solve problems such as corrosion of high-alloy steel, and achieve the effects of uniform billet performance, increased uniformity, and improved heating quality

Active Publication Date: 2014-08-27
NANJING IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a heating process for steel strips resistant to sulfuric acid leakage corrosion. The purpose of equipment with stainless steel and high-alloy steel causing severe corrosion problems

Method used

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  • Heating process for sulfuric acid leaking point corrosion resisting band steel

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Embodiment 1

[0025] This embodiment provides a heating process for strip steel resistant to sulfuric acid leakage corrosion. The heating furnace used in the heating process includes a preheating section 1, an upper heating section 2, a soaking section 3, a lower heating end firing section 4 and a lower heating section. Side burning section 5, the structure is as follows figure 1 As shown, there are 6 temperature detection points on the heating furnace, including: temperature control point 6 in the preheating section, temperature detection point 7 in the lower heating side, temperature detection point 8 in the upper heating section, and temperature detection point I9 in the lower heating end , The temperature detection point II10 of the lower heating end and the temperature detection point 11 of the soaking section.

[0026] Preheating section temperature detection point 6 set temperature: 520~800℃; lower heating side burning temperature detection point 7 set temperature: 1000~1180℃; upper ...

Embodiment 2

[0031] This embodiment provides a heating process for strip steel resistant to sulfuric acid leakage corrosion. The heating furnace used in the heating process includes a preheating section 1, an upper heating section 2, a soaking section 3, a lower heating end firing section 4 and a lower heating section. Side burning section 5, the structure is as follows figure 1 As shown, there are 6 temperature detection points on the heating furnace, including: temperature control point 6 in the preheating section, temperature detection point 7 in the lower heating side, temperature detection point 8 in the upper heating section, and temperature detection point I9 in the lower heating end , Temperature detection point II10 at the lower heating end and temperature detection point 11 at the soaking section.

[0032] Preheating section temperature detection point 6 set temperature: 520~800℃; lower heating side burning temperature detection point 7 set temperature: 1000~1180℃; upper heating ...

Embodiment 3

[0037]This embodiment provides a heating process for strip steel resistant to sulfuric acid leakage corrosion. The heating furnace used in the heating process includes a preheating section 1, an upper heating section 2, a soaking section 3, a lower heating end firing section 4 and a lower heating section. Side burning section 5, the structure is as follows figure 1 As shown, there are 6 temperature detection points on the heating furnace, including: temperature control point 6 in the preheating section, temperature detection point 7 in the lower heating side, temperature detection point 8 in the upper heating section, and temperature detection point I9 in the lower heating end , The temperature detection point II10 of the lower heating end and the temperature detection point 11 of the soaking section.

[0038] Preheating section temperature detection point 6 set temperature: 520~800℃; lower heating side burning temperature detection point 7 set temperature: 1000~1180℃; upper h...

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Abstract

The invention discloses a heating process for sulfuric acid leaking point corrosion resisting band steel. A heating furnace used in the heating process comprises a preheating section, an upper heating section, a soaking section, a lowering heating end calcining section and a lower heating side calcining section; the heating furnace is provided with six temperature detection points, including a preheating section temperature control point, a lower heating side calcining temperature detection point, an upper heating section temperature detection point, a lower heating end calcining temperature detection point I, a lower heating end calcining temperature detection point II and a soaking side calcining temperature detection point. By adopting the heating process disclosed by the invention, the rolling requirements can be met, and the problem that stainless steel for a fume extractor and fume waste heat utilization equipment or high alloy steel can be severely corroded is solved.

Description

technical field [0001] The invention relates to a heating process of an industrial furnace, in particular to a heating process of a strip steel resistant to sulfuric acid leakage corrosion, and belongs to the field of steel rolling. Background technique [0002] In recent years, environmental issues have attracted increasing attention from all walks of life. Smoke exhaust devices and smoke The construction quantity of gas waste heat utilization equipment has also increased by leaps and bounds. However, there are low-temperature dew point acid corrosion phenomena in these smoke exhaust devices and flue gas waste heat utilization equipment. This phenomenon can cause serious corrosion to stainless steel and high-alloy steel. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a heating process for steel strips resistant to sulfuric acid leakage corrosion. Stainless steel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/52C21D11/00
Inventor 白龙飞
Owner NANJING IRON & STEEL CO LTD
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