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A process for hot delivery and hot charging of bloom billets

A technology of blooms and slabs, which is applied in the technical field of hot delivery and hot charging of blooms to achieve the effects of avoiding rapid loss, reducing oxidation speed, and reducing heat loss

Active Publication Date: 2018-02-02
NANJING IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Defects appear in the form of intergranular cracks, and batches of triangular cracks appear on the surface of the rolled material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] This embodiment provides a process for hot delivery and hot charging of a bloom cast slab, which is carried out according to the following steps:

[0019] Step 1: An insulation cover is required on the roller table before the slab enters the drawing and leveling machine, and an insulation cover is required on the roller table between the drawing and leveling machine to the fire cutting machine; before the casting slab is loaded into the car, the ventilation status of the workshop needs to be confirmed , it is necessary to close the doors and windows first, and there must be no convective wind in the hot charging area;

[0020] Step 2: The insulated vehicle for transporting the casting slab must arrive at the loading position in advance, and the insulated vehicle must have fire-resistant and heat-preserving capabilities; after the slab arrives at the cooling bed, then conduct preliminary quality monitoring, first combined with process equipment operation monitoring and on...

Embodiment 2

[0024] This embodiment provides a process for hot delivery and hot charging of a bloom cast slab, which is carried out according to the following steps:

[0025] Step 1: An insulation cover is required on the roller table before the slab enters the drawing and leveling machine, and an insulation cover is required on the roller table between the drawing and leveling machine to the fire cutting machine; before the casting slab is loaded into the car, the ventilation status of the workshop needs to be confirmed , it is necessary to close the doors and windows first, and there must be no convective wind in the hot charging area;

[0026] Step 2: The insulated vehicle for transporting the casting slab must arrive at the loading position in advance, and the insulated vehicle must have fire-resistant and heat-preserving capabilities; after the slab arrives at the cooling bed, then conduct preliminary quality monitoring, first combined with process equipment operation monitoring and on...

Embodiment 3

[0030] This embodiment provides a process for hot delivery and hot charging of a bloom cast slab, which is carried out according to the following steps:

[0031] Step 1: An insulation cover is required on the roller table before the slab enters the drawing and leveling machine, and an insulation cover is required on the roller table between the drawing and leveling machine to the fire cutting machine; before the casting slab is loaded into the car, the ventilation status of the workshop needs to be confirmed , it is necessary to close the doors and windows first, and there must be no convective wind in the hot charging area;

[0032] Step 2: The insulated vehicle for transporting the casting slab must arrive at the loading position in advance, and the insulated vehicle must have fire-resistant and heat-preserving capabilities; after the slab arrives at the cooling bed, then conduct preliminary quality monitoring, first combined with process equipment operation monitoring and on...

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Abstract

The invention discloses a hot delivery and hot charging process for bloom casting blanks, comprising the steps of firstly, additionally providing a heat insulation cover on a roller way where casting blanks do not enter a tension leveler and a heat insulation cover on a roller way located between a position that the casting blanks exit out of the tension leveler and a flame cutting position to perform heat insulation; before loading the casting blanks in a truck, firstly confirming a ventilation condition of a workshop to prevent convective wind from happening in a hot charging region; secondly, carrying out preliminary quality monitoring, firstly picking out abnormally-produced casting blanks in time in combination with operation monitoring of process equipment and online site inspection; thirdly, rapidly collecting the casting blanks, keeping the surface temperatures of the casting blanks at 555-625 DEG C before loading the casting blanks in the truck, and transporting the casting blanks in a way that one boiler steel is provided for one truck; and fourthly, transporting the casting blanks by using a heat insulation truck, delivering the casting blanks to a steel mill and waiting for entering a heating furnace once finishing the operation of loading the casting blanks in the truck, wherein the travel time is shorter than 50min; and when reaching the steel mill, unloading the casting blanks from the truck in time, and charging the casting blanks into the heating furnace, wherein the surface temperatures of the casting blanks need exceed 450 DEG C before the casting blanks are charged into the heating furnace, and meanwhile, the unloading and furnace charging time does not exceed 60min.

Description

technical field [0001] The invention relates to a continuous casting process, in particular to a process for hot delivery and hot charging of a bloom billet. Background technique [0002] Iron and steel enterprises are large energy consumers in my country's industrial enterprises, and steel rolling heating furnace is an important production equipment in iron and steel production, and it is also one of the main energy-consuming equipment. Saving energy and reducing consumption, fundamentally reducing the cost of products and improving the economic performance of products are important means to improve the competitiveness of their products in the market. For the steel rolling heating furnace, in the past few decades, in order to fully explore its energy-saving potential, domestic and foreign scholars have carried out extensive research and exploration, and achieved remarkable application results, which greatly promoted the energy-saving of the heating furnace. work in progres...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/16
CPCB22D11/16
Inventor 宋金平李林杨利委
Owner NANJING IRON & STEEL CO LTD
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