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Wear-resistant sulfuric acid dew-point corrosion-resistant hot continuous rolling steel and manufacturing method thereof

A technology of dew point corrosion and sulfuric acid resistance, which is applied in the field of metal materials and its manufacturing, can solve problems such as poor wear resistance, and achieve the effect of improving corrosion performance and corrosion resistance

Active Publication Date: 2017-01-11
SHANGHAI MEISHAN IRON & STEEL CO LTD
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Problems solved by technology

It mainly solves the technical problem of poor wear resistance of the existing sulfuric acid dew point corrosion resistant steel

Method used

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  • Wear-resistant sulfuric acid dew-point corrosion-resistant hot continuous rolling steel and manufacturing method thereof
  • Wear-resistant sulfuric acid dew-point corrosion-resistant hot continuous rolling steel and manufacturing method thereof
  • Wear-resistant sulfuric acid dew-point corrosion-resistant hot continuous rolling steel and manufacturing method thereof

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Embodiment Construction

[0022] The present invention will be further described below in combination with examples of implementation.

[0023] Adopt the traditional long process of iron and steel production and manufacturing: blast furnace ironmaking → hot metal pre-desulfurization → converter top-bottom compound blowing → Ar station / or LF furnace refining → continuous casting → continuous casting slab without defects → inspection → heating → rough rolling → finishing Rolling → cooling → coiling → finished hot-rolled coils. Production control requirements: Pre-desulfurization of molten iron to control the S element below 0.010%; converter top-bottom composite blowing, Ar station / or LF furnace refining to adjust C, Si, Mn, S, P, Cu, Sb, Nb and other components to Control requirements to ensure the purity of molten steel; full-blown Ar protection casting; after heating the slab to 1200°C in a heating furnace, rolling it on a continuous hot rolling mill; After controlled rolling in the crystallizati...

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Abstract

The invention relates to a wear-resistant sulfuric-acid-dew-point-corrosion-resistant hot continuous rolled steel strip (coil) and a manufacturing method thereof, and mainly solves the technical problem of poor wear resistance in the existing sulfuric-acid-dew-point-corrosion-resistant steel. The technical scheme is as follows: the wear-resistant sulfuric-acid-dew-point-corrosion-resistant hot continuous rolled steel is composed of the following components in percentage by mass: 0.10%-0.20% of C, 0.1%-0.35% of Si, 1.0%-1.8% of Mn, at most 0.02% of P, at most 0.01% of S, 0.2%-0.5% of Cu, 0.04%-0.1% of Sb, 0.01%-0.06% of Ti, 0.01%-0.03% of Nb, and the balance of Fe. The invention aims to produce the hot continuous rolled steel strip (coil) capable of satisfying wear resistance and sulfuric acid dew point corrosion resistance in a hot continuous rolling mill train mode.

Description

technical field [0001] The invention relates to a wear-resistant sulfuric acid dew-point corrosion-resistant hot continuous rolling steel strip (coil) and a manufacturing method thereof, belonging to the technical field of metal materials and manufacturing thereof. Background technique [0002] Sulfuric acid dew point corrosion environment generally occurs in sintering flue gas desulfurization units, CDQ power generation equipment, power plant boiler preheaters / economizers, flues, chimneys and other parts. According to the introduction of literature, the sulfuric acid dew point corrosion-resistant steel currently in use mainly includes 09CrCuSb, S-ten1, ND, JNS and other steel types. The composition and properties of related patents are shown in Table 1 and Table 2. [0003] Table 1 Chemical composition of relevant patented steels for sulfuric acid dew point corrosion resistance [0004] [0005] Table 2 Properties of steels resistant to sulfuric acid dew point corrosion...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/60C21D8/02
Inventor 刘友荣穆海玲裴新华
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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