Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of checkered steel plate

A patterned steel plate and stage control technology, which is applied in metal rolling, manufacturing tools, temperature control, etc., can solve the problems of uncontrollable patterned steel plate damage control, etc., and achieve the effect of effective damage control and integrity assurance

Active Publication Date: 2021-11-23
武汉钢铁有限公司
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present application provides a method for preparing patterned steel plates, which solves the problem of failure control in the production process of patterned steel plates that cannot be controlled in the prior art, realizes damage control of patterned steel plates, and achieves the goal of qualified products that meet actual needs

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of checkered steel plate
  • Preparation method of checkered steel plate
  • Preparation method of checkered steel plate

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0039] See image 3 , is a schematic flowchart of a method for preparing a checkered steel plate provided in an embodiment of the present application. Such as image 3 The shown method includes the following implementation steps:

[0040] S301. The production process of checkered steel plate is as follows: hot metal desulfurization, converter smelting, argon blowing, ladle furnace refining, thin slab continuous casting, soaking furnace, phosphorus removal, finishing rolling, laminar cooling, coiling, finishing, inspection and packaging.

[0041] S302. Control the exit temperature of the slab continuously cast in the thin slab continuous casting stage in the soaking furnace stage.

[0042] In the stage of controlling the temperature of the slab out of the furnace (that is, the regulation of the temperature in the furnace during the soaking furnace stage), the target value (ideal value or maximum value) of the slab out of the furnace temperature is set at 1180°C, and the actu...

Embodiment 1

[0071] Example 1: steel type H-Q235-B, checkered steel plate with a specification of 1.5*1000mm

[0072] 1. The actual temperature of the slab coming out of the furnace is 1175°C.

[0073] 2. The strip threading speed of the F7 finishing stand is limited within 9.3m / s~9.5m / s, preferably the actual strip threading speed is controlled at 9.35m / s~9.4m / s.

[0074] 3. The reduction rate of the finishing stand is set at 14% to 14.5%.

[0075] 4. Anti-stripping water sequence, the spray sequence of F1~F4 are: 13.8m, 19.3m, 24.8m and 30.3m respectively.

[0076] 5. Final rolling temperature, control the actual final rolling temperature at 851℃~857℃.

[0077] 6. The crown of the finished product (the section crown of the finished rolling piece), the actual crown of the rolled piece is controlled between 55um and 60um.

[0078] 7. Rolling pressure control. When the rolling width of the rolled piece is 1000mm, the actual rolling pressure of the F7 finishing stand is controlled at 9800...

Embodiment 2

[0081] Example 2: steel type H-Q235-B, checkered steel plate with a specification of 1.6*1000mm

[0082] 1. The actual temperature of the slab coming out of the furnace is 1172°C.

[0083] 2. The strip threading speed of F7 finishing stand is limited to 9.3m / s~9.35m / s.

[0084] 3. The reduction rate of the finishing stand is set at 14.5% to 15%.

[0085] 4. Anti-stripping water sequence, the spray sequence of F1~F4 are: 13.8m, 19.3m, 24.8m and 30.3m respectively.

[0086] 5. Final rolling temperature, control the actual final rolling temperature at 857℃~865℃.

[0087] 6. The crown of the finished product (the section crown of the finished rolling piece), the actual crown of the rolled piece is controlled between 50um and 55um.

[0088] 7. Rolling pressure control. When the rolling width of the rolled piece is 1000mm, the actual rolling pressure of the F7 finishing stand is controlled at 9800KN~10300KN.

[0089] 8. The rigidity difference between the two sides of the F6 and...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method of a checkered steel plate. The preparation process of the checkered steel plate sequentially comprises the steps of molten iron desulfurization, converter smelting, argon blowing, ladle furnace refining, sheet billet continuous casting, soaking in a soaking furnace, dephosphorization, finish rolling, laminar cooling, coiling, finishing, checking and packaging. The method comprises the following steps of controlling the tapping temperature of a sheet billet formed by continuous casting in the sheet billet continuous casting stage in the soaking furnace stage; and / or, rolling information of a corresponding finish rolling last rack is controlled in the finish rolling stage so as to control rolling process parameters in the finish rolling stage, and therefore damage control over the checkered steel plate is achieved. By adopting the method, the problem that damage control in the checkered steel plate production process cannot be controlled in the prior art is solved.

Description

technical field [0001] The invention relates to the technical field of steel plate preparation, in particular to a method for preparing patterned steel plates. Background technique [0002] my country's pattern (steel) plate was first successfully trial-produced by Anshan Iron and Steel Co., Ltd. in the 1960s. It has developed into a typical hot-rolled product and a high-value-added hot-rolled product. It has the advantages of beautiful appearance, high surface friction, and good anti-skid performance. It is widely used in construction, transportation, shipbuilding, and machinery manufacturing. The shape of the checkered steel plate is mainly in the shape of lentils, rhombuses, round beans, and oblate mixed shapes, etc. Most of the checkered plates in the market are in the shape of lentils. [0003] At present, the finishing rolling in the process flow of the lentil-shaped patterned steel plate is composed of 7 main rolling finishing units (also called the finishing stand g...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/46B21B37/00B21B37/58B21B37/74C21D8/02C21D11/00
CPCB21B1/463B21B37/00B21B37/58B21B37/74C21D8/0226C21D11/00Y02P10/20
Inventor 田军利李彪宋义纯高智
Owner 武汉钢铁有限公司