Process for rolling thin low-temperature tank box steel plate by using rolling machine with single machine frame furnace

A furnace coil rolling mill and low temperature tank technology, applied in metal rolling, manufacturing tools, metal rolling and other directions, can solve the problems of excessive steel plate rolling force, steel plate rolling waste, uneven temperature distribution, etc., to meet the requirements of refined structure Grain, ensure the effect of plate shape

Active Publication Date: 2013-03-20
NANJING IRON & STEEL CO LTD
View PDF6 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the medium and heavy plate rolling mill produces thin-gauge low-temperature tank steel plates below 11mm, as the thickness of the steel plate rolling becomes thinner, the temperature drop of the steel plate becomes faster and faster. In general, the temperature distribution is extremely uneven, which is a difficult problem in

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

[0020] A process for rolling thin low-temperature tank steel plates with a single-stand furnace coil mill. A slab with a thickness of 150 mm is used to roll a low-temperature tank steel plate with a thickness of 11 mm. The process flow is: cold loading or hot charging in the slab warehouse → heating Furnace heating→coarse descaling→finish descaling→steel rolling mill rolling→flying shear head or section→laminar cooling→hot straightening machine straightening→cooling bed air cooling→steel plate bottom surface inspection→double side shearing→ Cut to length, segment or sample→spraying and stamping→stacking→warehousing of finished products;

[0021] In the heating process of the heating furnace, the tapping temperature of the heating furnace: 1150°C;

[0022] In the rough descaling process, high-pressure water is used to descale, and the oxide scale caused by one heating is removed at the outlet of the heating furnace. The water pressure of the nozzle is 20Mpa, and the descaling n...

Embodiment 2

[0031] A process for rolling thin low-temperature tank steel plates with a single-stand furnace coil mill. A slab with a thickness of 150 mm is used to roll a low-temperature tank steel plate with a thickness of 10 mm. The process flow is: cold loading or hot charging in the slab warehouse→heating Furnace heating→coarse descaling→finish descaling→steel rolling mill rolling→flying shear head or section→laminar cooling→hot straightening machine straightening→cooling bed air cooling→steel plate bottom surface inspection→double side shearing→ Cut to length, segment or sample→spraying and stamping→stacking→warehousing of finished products;

[0032] In the heating process of the heating furnace, the tapping temperature of the heating furnace: 1200°C;

[0033] In the rough descaling process, high-pressure water is used to descale, and the oxide scale caused by one heating is removed at the outlet of the heating furnace. The water pressure of the nozzle is 21Mpa, and the descaling noz...

Embodiment 3

[0042] A process for rolling thin low-temperature tank steel plates with a single-stand furnace coil mill. A slab with a thickness of 150 mm is used to roll a low-temperature tank steel plate with a thickness of 8 mm. The process flow is: cold loading or hot charging in the slab warehouse→heating Furnace heating→coarse descaling→finish descaling→steel rolling mill rolling→flying shear head or section→laminar cooling→hot straightening machine straightening→cooling bed air cooling→steel plate bottom surface inspection→double side shearing→ Cut to length, segment or sample→spraying and stamping→stacking→warehousing of finished products;

[0043] In the heating process of the heating furnace, the tapping temperature of the heating furnace: 1230°C;

[0044] In the rough descaling process, high-pressure water is used to descale, and the oxide scale caused by one heating is removed at the outlet of the heating furnace. The water pressure of the nozzle is 22Mpa, and the descaling nozz...

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
Yield strengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a process for rolling a thin low-temperature tank box steel plate by using a rolling machine with a single machine frame furnace. The low-temperature tank box steel plate of which the thickness is less than or equal to 11mm is formed by rolling a plate blank of which the thickness is 150mm. The process comprises the following steps of coldly or hotly loading the plate blank in a storehouse, heating the plate blank in a heating furnace, crudely removing scales, finely removing the scales, rolling the plate blank by using a furnace rolling machine, cutting the head or sectioning by using a pair of flying shears, cooling with laminar flow, straightening by using a hot straightening machine, performing air cooling by using a cooling bed, checking the lower surface of a steel plate, cutting two sides, sectioning or sampling by cutting to length, spraying steel seal, stacking the products, and storing the finished products in the warehouse, wherein the temperature for delivering the steel plate from the heating furnace is 1,150 to 1,230 DEG C, the temperature of a rolling furnace in front of the machine and the temperature of a rolling furnace behind the machine are set to be 850 to 950 DEG C, the rolling times is 11, two rolling steps are performed, flat rolling is performed in the first step for 7 times, and rolling is performed in the second step for 4 times. The requirement of refining and organizing crystalline grains can be met according to the plate produced by the invention, and meanwhile, the shape and the performance of the plate are ensured.

Description

technical field [0001] The invention belongs to the field of metallurgy and relates to a production process of a steel plate, in particular to a process for rolling a thin specification low-temperature tank steel plate by a single-stand furnace coil rolling mill. Background technique [0002] When the medium and heavy plate rolling mill produces thin-gauge low-temperature tank steel plates below 11mm, as the thickness of the steel plate rolling becomes thinner, the temperature drop of the steel plate becomes faster and faster. In general, the temperature distribution is extremely uneven, which is a difficult problem in the field of metallurgy, causing serious consequences: first, the rolling force of the steel plate exceeds the maximum limit, or the steel plate has a quick stop due to the poor shape of the steel plate, which eventually leads to the scrapping of the steel plate; The overall performance of the rolled piece and the shape of the rolled plate are improved. [00...

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
IPC IPC(8): B21B1/22B21B45/08B21B45/02B21B37/74
Inventor 李志民梁江民王生华
Owner NANJING IRON & STEEL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap