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

Production technology for strip steel

A production process and strip steel technology, applied in the field of production process that can improve the performance of strip steel, can solve the problems of poor surface quality, surface oxidation, rust, etc., and achieve the effect of high hardness

Inactive Publication Date: 2012-06-13
昆山龙鹰金属制品有限公司
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, most of the current strip steel is produced by hot rolling process. Hot rolled steel plate is easy to process and has good ductility, but its hardness and strength are low, the surface quality is poor, and surface oxidation, rust, pitting and other phenomena will occur. , and the hot-rolled steel plate is generally a medium-thick plate, which cannot meet the customer's requirements for strip dimensional accuracy, plate shape, and surface quality and thinner thickness

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
  • Production technology for strip steel
  • Production technology for strip steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] To produce 1.5mm strip steel, the process steps are as follows:

[0024] (1) Take hot-rolled steel coil as raw material, remove the scale on its surface through pickling;

[0025] (2) Cold rolling: the above-mentioned pickled steel coils are cold-rolled through a rough rolling mill, and the cold-rolling temperature is controlled within 450°C, and the thickness of the strip is cold-rolled from 3.8mm to about 3.0mm, and the thickness tolerance is 0.01 ~0.05mm;

[0026] (3) Medium temperature annealing: the strip steel is annealed at a temperature of 755°C;

[0027] (4) Secondary cold rolling: The above-mentioned strip steel is subjected to secondary cold rolling on a cold rolling mill, and the temperature of the cold rolling is controlled within 450°C. At this time, the thickness of the strip steel is reduced from 3.0mm to 1.5mm, and the thickness tolerance is 0.01~0.05mm;

[0028] (5) Finished product annealing: the steel strip is annealed at a temperature of 785°C; ...

Embodiment 2

[0031] To produce 1.6mm strip steel, the process steps are as follows:

[0032] (1) Take hot-rolled steel coil as raw material, remove the scale on its surface through pickling;

[0033] (2) Cold rolling: the above-mentioned pickled steel coils are cold-rolled through a rough rolling mill, and the cold-rolling temperature is controlled within 450°C, and the thickness of the strip is cold-rolled from 3.8mm to about 3.0mm, and the thickness tolerance is 0.01 ~0.05mm;

[0034] (3) Medium temperature annealing: the strip steel is annealed at a temperature of 750°C;

[0035] (4) Secondary cold rolling: The above-mentioned strip steel is subjected to secondary cold rolling on a cold rolling mill, and the temperature of the cold rolling is controlled within 450°C. At this time, the thickness of the strip steel is reduced from 3.0mm to 1.6mm, and the thickness tolerance is 0.01~0.05mm;

[0036] (5) Finished product annealing: the steel strip is annealed at a temperature of 780°C; ...

Embodiment 3

[0039] To produce 1.7mm strip steel, the process steps are as follows:

[0040] (1) Take hot-rolled steel coil as raw material, remove the scale on its surface through pickling;

[0041] (2) Cold rolling: the above-mentioned pickled steel coils are cold-rolled through a rough rolling mill, and the cold-rolling temperature is controlled within 450°C, and the thickness of the strip is cold-rolled from 3.8mm to about 3.0mm, and the thickness tolerance is 0.01 ~0.05mm;

[0042] (3) Medium temperature annealing: the strip steel is annealed at a temperature of 745°C;

[0043] (4) Secondary cold rolling: The above-mentioned strip steel is subjected to secondary cold rolling on a cold rolling mill, and the temperature of the cold rolling is controlled within 450°C. At this time, the thickness of the strip steel is reduced from 3.0mm to 1.7mm, and the thickness tolerance is 0.01~0.05mm;

[0044] (5) Finished product annealing: the steel strip is annealed at a temperature of 790°C; ...

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 production technology for strip steel, which comprises the steps: (1) taking a hot rolled steel coil as a raw material, and removing oxide skin on the surface of the hot rolled steel coil through acid cleaning; (2) performing cold rolling, namely the steel coil after the acid cleaning passes through a roll type cold rolling mill for cold rolling at a temperature lower than450 DEG C; (3) performing annealing treatment on the strip steel within the temperature range of between 745 and 755 DEG C; (4) performing secondary cold rolling, namely the strip steel is subjected to secondary cold rolling on the roll type cold rolling mill at a temperature lower than 450 DEG C; (5) performing annealing treatment on the strip steel within the temperature range of between 785 and 795 DEG C; and (6) shearing, inspecting, packing, and obtaining finished products. The strip steel produced by the production technology has the advantages of higher precision, thinner size, good surface quality, and high strength and hardness.

Description

technical field [0001] The invention relates to a production process of strip steel, in particular to a production process capable of improving the properties of strip steel. Background technique [0002] As we all know, strip steel is a narrow and long steel plate produced to meet the needs of different industrial sectors. Its width is generally within 300mm, but with economic development, there is no limit to the width. Strip steel is supplied in coils, with the advantages of high dimensional accuracy, good surface quality, easy processing, and material saving. It is widely used in the production of welded steel pipes, as blanks for cold-formed steel, and in the manufacture of bicycle frames, rims, clamps, washers Spring blades, saw blades and blades, soles of safety shoes and steel toe caps, etc. [0003] However, most of the current strip steel is produced by hot rolling process. Hot rolled steel plate is easy to process and has good ductility, but its hardness and str...

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): C21D8/02C21D1/26
Inventor 徐根生
Owner 昆山龙鹰金属制品有限公司