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

A control method for eliminating hot-rolled high-strength strip steel flat coils

A control method and strip steel technology, applied in hot-rolled strip coiling, eliminating the control field of hot-rolled high-strength strip steel flat coils, can solve problems such as flat coils, achieve increased clamping force, and inhibit bainitic transformation , the effect of reducing the risk of flat roll

Active Publication Date: 2022-05-10
SHANGHAI MEISHAN IRON & STEEL CO LTD
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The object of the present invention is to provide a control method for eliminating flat coils of hot-rolled high-strength strip steel, mainly to solve the problem of flat coils that occur in steel coils that undergo bainite phase transformation during the cooling process of hot-rolled high-strength strip steel after coiling in the hot rolling process. volume problem

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1, the specification of the steel strip is 2.0×1250mm, the grade of the steel strip is HC700 / 980MS, the yield strength of the hot-rolled high-strength steel strip is 550-630MPa, and the tensile strength is 640-730MPa.

[0039] A control method for eliminating hot-rolled high-strength strip steel flat coils. The hot continuous rolling production control system is equipped with electrical devices for information collection and command execution on the rolling line, including the following steps:

[0040] 1) Manipulate the coiling temperature control model to set the coiling target temperature of the strip, and the coiling target temperature of the strip is the temperature of the bainite transformation point + 60°C, that is, 630°C;

[0041] 2) Manipulate the coiling temperature control model to receive parameter instructions with a strip thickness of 2.0mm, a target temperature at the end of finishing rolling of 860°C, a target coiling temperature of 630°C, and a co...

Embodiment 2

[0046] Example 2, the specification of the steel strip is 4.2×1200mm, the grade of the steel strip is HC700 / 980MS, the yield strength of the hot-rolled high-strength steel strip is 550-630MPa, and the tensile strength is 640-730MPa.

[0047] A control method for eliminating hot-rolled high-strength strip steel flat coils. The hot continuous rolling production control system is equipped with electrical devices for information collection and command execution on the rolling line, including the following steps:

[0048] 1) Manipulate the coiling temperature control model to set the coiling target temperature of the strip, and the coiling target temperature of the strip is the temperature of the bainite transformation point + 40°C, that is, 610°C;

[0049] 2) Manipulate the coiling temperature control model to receive parameter instructions with strip thickness of 4.2mm, target temperature at the end of finishing rolling at 860°C, target coiling temperature at 610°C, and front-end ...

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

PropertyMeasurementUnit
yield strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a control method for eliminating flat coils of hot-rolled high-strength strip steel, which mainly solves the problem of flat coils that occur in steel coils that undergo bainitic phase transformation during the cooling process of hot-rolled high-strength strip steel after coiling in the hot rolling process . The invention provides a control method for eliminating flat coils of hot-rolled high-strength strip steel, comprising: controlling the coiling temperature model to set the target coiling temperature of the strip steel; controlling the coiling temperature control model to receive the thickness of the strip steel, the target temperature at the end of finishing rolling, Coiling target temperature and laminar flow front-end cooling mode parameter command; control the coiling temperature control model to adjust the actual coiling temperature of the strip to the coiling target temperature of the strip; control the coiling tension of the strip; control the coiling machine to The tail of the steel coil is fixed; the steel coil is unloaded from the coiler to the coil unloading trolley, and the coil unloading trolley transfers the steel coil to the baler for bundling. The method of the invention improves the quality of the hot-rolled high-strength steel strip and reduces the production cost.

Description

technical field [0001] The invention relates to a hot-rolled steel strip coiling method, in particular to a control method for eliminating hot-rolled high-strength steel strip flat coils, and specifically belongs to the technical field of laminar flow cooling and coiling in iron and steel metallurgy hot rolling process. Background technique [0002] In the hot rolling production process of strip steel, the continuous casting slab is rolled into hot-rolled strip steel after the hot continuous rolling process, and after the strip steel is coiled into steel coils, flat coil defects sometimes occur, which is manifested by the steel coil being rolled by the coil. The circle at the end of the extraction becomes an ellipse, which cannot be uncoiled in the subsequent process. At the same time, due to insufficient roundness, even if the coil is uncoiled, friction damage will occur between layers due to uncoordinated operation of the steel coil, which will affect the surface quality. ...

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 Patents(China)
IPC IPC(8): B21B37/48B21B37/72B21B37/74B21B15/00
CPCB21B37/48B21B37/72B21B37/74B21B15/00B21B2015/0057B21B2201/06
Inventor 孙明军吕程凌爱兵陈维晋彭扬文
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD