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Hot-rolled steel strip used for enamel and having ultra-deep-punching performance and preparation method of hot-rolled steel strip

A technology for deep-drawing performance and hot-rolled steel is applied in the field of hot-rolled steel strip for enamel and its preparation, which can solve the problems of inability to meet the needs of ultra-deep-drawing and cannot be replaced, and achieve good deep-drawing performance, low cost, and high technology. Simple and controllable effects

Inactive Publication Date: 2015-07-22
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In short, none of the above-mentioned related patents can meet the forming needs of ultra-deep drawing or ultra-deep drawing, and cannot replace the cold-rolled enameled steel plate on the market

Method used

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  • Hot-rolled steel strip used for enamel and having ultra-deep-punching performance and preparation method of hot-rolled steel strip
  • Hot-rolled steel strip used for enamel and having ultra-deep-punching performance and preparation method of hot-rolled steel strip
  • Hot-rolled steel strip used for enamel and having ultra-deep-punching performance and preparation method of hot-rolled steel strip

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Embodiment 1-6

[0031] Embodiment 1-6: The present invention will be further described below. The invention is a hot-rolled steel strip for enamel with extra-deep drawing performance, and its chemical composition weight percent is: 0.005%≤C≤0.010%, Si≤0.05%, 0.10%≤Mn≤0.30%, 0.040%≤Ti ≤0.080%, P≤0.025%, 0.010%≤S≤0.035%, 0.010%≤Als≤0.060%, N≤0.006%, and the balance is iron and unavoidable impurities. The composition of molten steel for smelting is shown in Table 1.

[0032] The preparation method comprises the following steps: vacuum treatment of molten steel → casting billets → heating → descaling with high-pressure water → rough rolling → hot coil box coiling → finishing rolling → cooling → coiling → levelling.

[0033] Table 1 Chemical composition of enamelled steel of the present invention (% by weight)

[0034]

[0035] After the molten steel with the three components in the above table is vacuum-treated, it is cast into a steel slab by a conventional continuous casting method. Heati...

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Abstract

The invention discloses a hot-rolled steel strip used for enamel and having ultra-deep-punching performance and a preparation method of the hot-rolled steel strip. The hot-rolled steel strip comprises the following chemical components in percentage by weight: not less than 0.005% and not more than 0.010% of C, not more than 0.05% of Si, not less than 0.10% and not more than 0.30% of Mn, not less than 0.040% and not more than 0.080% of Ti, not more than 0.025% of P, not less than 0.010% and not more than 0.035% of S, not less than 0.010% and not more than 0.060% of Als and not more than 0.006% of N. The preparation method comprises the steps of vacuum treatment of molten steel, steel billet casting, heating, high-pressure water descaling, rough rolling, coiling by a hot coil box, precision rolling, cooling, coiling and flattening. Compared with the prior art, the hot-rolled steel strip prepared with the method has good deep-punching performance, fish-scaling resistance and welding performance, meets a pressure-resistant requirement of a water heater container, and can be used for replacing cold-rolled steel for enamel to manufacture the water heater container with an ultra-deep-punching requirement.

Description

technical field [0001] The invention relates to the technical field of manufacturing a hot-rolled enamel steel strip, in particular to a hot-rolled steel strip for enamel with ultra-deep drawing performance and a preparation method thereof. Background technique [0002] The use of enamel steel is mainly divided into three categories: daily use; chemical equipment; environmental protection equipment. Among them, the processing technology of making water heater enamel liner with steel plate mainly includes forming, welding and enamel; The product has the characteristics of pressure resistance, high temperature resistance and good corrosion resistance. [0003] The performance requirements of enamelled steel sheets are closely related to their processing technology, mainly including strength, formability, scale resistance, adhesion and welding performance, etc. Different uses require different comprehensive properties to adapt. Anti-scale explosion performance is the most bas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/14C21D8/02
Inventor 吴菊环肖尧翁建军徐权常军冉梦伦李正荣付开忠李卫平赵国英王羿
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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