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Thin-specification pattern plate and production method thereof

A production method and pattern plate technology, which are applied to workpiece surface treatment equipment, metal rolling, manufacturing tools, etc., can solve the problems of high running speed, small self-weight of strip steel, and folded head, so as to improve production efficiency and reduce coil volume. The effect of taking temperature and ensuring uniformity

Active Publication Date: 2019-02-15
SHAGANG GROUP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the short rolling deformation zone of the thin patterned plate, the friction coefficient between the patterned roller and the corresponding flat roller and the strip steel is inconsistent, and the strip steel has a small self-weight, which may easily cause the problem of groove removal
In addition, the plate shape problem is caused by the large amount of pressing of the final frame, the problem of floating up caused by the fast running speed on the heat output roller table, and the problem of head folding during coiling, etc., making the production of thin pattern plate extremely difficult
There are also certain rolling problems in the production of thin-gauge hot-rolled strip by hot-tandem rolling mills at home and abroad, which makes the output of thin-gauge checker plate extremely low

Method used

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  • Thin-specification pattern plate and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) The molten steel with qualified components smelted by converter or electric furnace is continuously cast by a pair of copper casting rollers rotating in reverse to form a continuous casting strip with a thickness of 1.8mm and a continuous casting speed of 50m / min;

[0038] (2) The cast strip is rolled into a thin-gauge hot-rolled strip through two passes of hot rolling. The thickness of the hot-rolled strip is 0.7mm, the finishing temperature is 1150°C, and the rolling speed is 120m / min;

[0039] (3) A pattern rolling mill is arranged behind the hot rolling mill of the second stand, and the upper surface of the hot-rolled strip is rolled into a lentil pattern shape.

[0040] (4) Cool the checkered plate after rolling, the cooling method is air mist cooling, and coil it into coils, and the coiling temperature is 250°C.

[0041] Check the surface of the checkered plate, the rolled checkered plate has beautiful pattern and good shape.

Embodiment 2

[0043] (1) The molten steel with qualified components smelted by converter or electric furnace is continuously cast by a pair of copper casting rollers rotating in reverse to form a continuous casting strip, the thickness of the casting strip is 2.2mm, and the continuous casting speed is 40m / min;

[0044] (2) The cast strip is rolled into a thin gauge hot-rolled steel strip through one pass of hot rolling. The thickness of the hot-rolled steel strip is 2.0mm, the finish rolling temperature is 1050°C, and the rolling speed is 80m / min;

[0045] (3) A pattern rolling mill is arranged behind the hot rolling mill of the first stand, and the upper surface of the hot-rolled strip is rolled into a rhombus pattern shape.

[0046] (4) Cool the checkered plate after rolling, the cooling method is air jet cooling, and coil it into coils, and the coiling temperature is 300°C.

[0047] Check the surface of the checkered plate, the rolled checkered plate has beautiful pattern and good shape....

Embodiment 3

[0049] (1) Molten steel with qualified components smelted by converter or electric furnace is formed into a continuous casting strip by a pair of counter-rotating copper casting rolls, the thickness of the casting strip is 1.4mm, and the continuous casting speed is 75m / min;

[0050] (2) The cast strip is rolled into a thin gauge hot-rolled steel strip through one pass of hot rolling. The thickness of the hot-rolled steel strip is 1.1mm, the finishing temperature is 1180°C, and the rolling speed is 110m / min;

[0051] (3) A pattern rolling mill is arranged behind the hot rolling mill of the first stand, and the upper surface of the hot-rolled strip is rolled into a pea-shaped pattern shape.

[0052] (4) Cool the checkered plate after rolling, the cooling method is air jet cooling, and coil it into coils, and the coiling temperature is 480°C.

[0053] Check the surface of the checkered plate, the rolled checkered plate has beautiful pattern and good shape.

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Abstract

The invention discloses a thin-specification pattern plate and the production method. The method is that the molten steel subjected to converter or electric furnace smelting is qualified, the molten steel passes through a pair of opposite-rotation casting rolls, casting to form a cast strip with the thickness of 1.4mm to 2.2mm, wherein the continuous casting speed is less than or equal to 80 m / min, the cast strip passes through one time or two-pass hot rolling is carried out to form hot rolled strip steel with the thickness of 0.7mm to 2.0 mm, the finish rolling temperature is 1050 DEG c to 1200 DEG c, the hot rolling speed is less than or equal to 120m / min, the hot rolled strip steel is rolled into a hyacinth-bean-shaped, a rhombic-shaped, a circular-bean-shaped, a flat-circle mixed-shaped pattern plate through a pattern rolling mill, and then is cooled to 250 DEG c to 500 DEG c through air mist or air injection, and is coiled. The pattern plate is low in production cost, short in flow, thin in thickness, high in strength, excellent in plate shape and pattern quality.

Description

technical field [0001] The invention relates to a checkered plate with short flow, low cost, thin specification and high strength and a production method thereof. Background technique [0002] The checkered plate has good anti-slip and wear-resistant functions, and is easy to clean and saves steel. It is widely used in construction, shipbuilding, transportation and machinery manufacturing industries. The shape of checkered plate mainly has lentil shape, rhombus shape and round bean shape. The pattern is open type, beautiful and generous, good anti-skid effect, easy to remove water and oil, and the pattern is wear-resistant, so it is widely used in the market. [0003] At present, the thickness of checkered plates used in the market is generally above 2.5mm. In the construction and machinery manufacturing industry, the 2.5-3.0mm checkered plate can completely replace the 4.0mm flat plate, and 220kg of steel can be saved per ton. In addition, for ships, automobiles, construc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C37/02B21B1/22B21B45/02
CPCB21B1/22B21B1/227B21B45/0209B21B2001/225B21B2045/0212B21C37/02
Inventor 李化龙陈爱华施一新刘俭李霞周东升李婷婷刘新院史华跃刘玉君
Owner SHAGANG GROUP
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