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

Continuous tunnel type annealing furnace structure with heating bottom resistor

A technology of resistance strip and annealing furnace, applied in the direction of heat treatment furnace, furnace, furnace type, etc., can solve the problems of metal strip breaking, maintenance difficulty, metal radiant tube sinking, etc., achieve stable structure and shape, and low maintenance cost , the effect of complete structure

Active Publication Date: 2012-07-04
无锡华精新材股份有限公司
View PDF7 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The method of directly heating the furnace by laying bare resistance strips on the bottom of the furnace has high thermal efficiency, but due to various reasons, the metal strips processed in the furnace are often broken, and the metal strips processed in the furnace are often broken. After being pulled off, its leading edge touches the bare resistance band laid flat on the bottom of the furnace, short-circuiting the resistance band and tripping
In addition, the strip head of the processed metal strip in the furnace will catch the resistance strip laid flat on the bottom of the furnace and pull the resistance strip away.
[0007] Lay the resistance strip bare on the bottom of the furnace, install a protection plate above the resistance strip, heat the protection plate with the resistance strip, and heat the furnace through the heat radiation of the protection plate, which has low thermal efficiency, large investment, and difficult maintenance.
[0008] The method of heating the metal tube by placing a resistance band in the metal tube and heating the furnace through the heat radiation of the metal tube, in addition to low thermal efficiency and large investment, usually has a high temperature in the furnace, and the metal radiant tube will creep under high temperature. Shen, resulting in the blockage of the furnace tunnel and unable to produce, high operating costs
[0009] To sum up the above, the existing furnace bottom structure cannot make the resistance band have a good fixing effect under the condition of the lowest cost, and cannot exert the most suitable thermal efficiency for metal annealing, that is, the suitable annealing temperature for metal
And the improvement of adjusting furnace bottom structure also does not see relevant patent literature to report

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
  • Continuous tunnel type annealing furnace structure with heating bottom resistor
  • Continuous tunnel type annealing furnace structure with heating bottom resistor
  • Continuous tunnel type annealing furnace structure with heating bottom resistor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Specifically, the following process steps are adopted:

[0035] 1. The refractory brick masonry structure at the bottom of the furnace is groove type;

[0036] 2. The depth of the groove is D5=60mm, and the width of the groove is D1=360mm;

[0037] 3. The groove is made of refractory bricks;

[0038] 4. The resistance strip is embedded in the groove;

[0039] 5. The height of the resistance strip is D6=35mm, and the width of the resistance strip after forming is D2=320mm;

[0040] 6. After the resistance strip is embedded in the groove, a longitudinal rib that is consistent with the movement direction of the metal strip being processed in the furnace is built above the resistance strip.

[0041] 7. The longitudinal rib spacing D4 is 200mm.

[0042] 8. The material of the longitudinal ribs is heavy refractory brick, the specific gravity is 1.1, and the section size is 60mm long and 60mm wide.

[0043] 9. The metal strip to be processed in the furnace is a silicon st...

Embodiment 2

[0046] Specifically, the following process steps are adopted:

[0047] 1. The refractory brick masonry structure at the bottom of the furnace is groove type;

[0048] 2. The depth of the groove is D5=60mm, and the width of the groove is D6=360mm;

[0049] 3. The groove is made of refractory bricks;

[0050] 4. The resistance strip is embedded in the groove;

[0051] 5. The height of the resistance strip is D6=35mm, and the width of the resistance strip after forming is D2=320mm;

[0052] 6. After the resistance strip is embedded in the groove, the longitudinal ribs that are consistent with the movement direction of the metal strip being processed in the furnace are built above the resistance strip;

[0053] 7. The longitudinal rib spacing D4 is 250mm;

[0054] 8. The material of the longitudinal ribs is heavy refractory brick, the specific gravity is 1.2, the section size is 60mm long and 70mm wide;

[0055] 9. The metal strip to be processed in the furnace is a silicon s...

Embodiment 3

[0058] Specifically, the following process steps are adopted:

[0059] 1. The refractory brick masonry structure at the bottom of the furnace is groove type;

[0060] 2. The depth of the groove is D5=60mm, and the width of the groove is D6=360mm.

[0061] 3. The groove is made of refractory bricks;

[0062]4. The resistance strip is embedded in the groove;

[0063] 5. The height of the resistance strip is D6=35mm, and the width of the resistance strip after forming is D2=320mm;

[0064] 6. After the resistance strip is embedded in the groove, the longitudinal ribs that are consistent with the movement direction of the metal strip being processed in the furnace are built above the resistance strip;

[0065] 7. The longitudinal rib spacing is 225mm;

[0066] 8. The material of the longitudinal ribs is heavy refractory brick, the specific gravity is 1.0, and the section size is 70mm long and 70mm wide;

[0067] 9. The metal strip to be processed in the furnace is a silicon s...

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
sizeaaaaaaaaaa
widthaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a continuous tunnel type annealing furnace structure with a heating bottom resistor. The furnace bottom of the continuous tunnel type annealing furnace has a refractory brick building structure; the refractory brick building structure consists of a plurality of grooves; resistance bands are embedded into the grooves; and a plurality of longitudinal ribs consistent with the moving direction of metal strips treated in the furnace are arranged above the resistance bands. The structure is paved at the bottom of the continuous tunnel type annealing furnace, a furnace bottom roller is arranged on the structure, and the metal strips treated in the furnace are annealed, so the continuous tunnel type annealing furnace structure has high thermal efficiency and low investment, and is simple and convenient to construct, reliable to operate and convenient to maintain.

Description

technical field [0001] The invention relates to a continuous tunnel annealing furnace structure heated by a bottom resistance band, which is widely used in the furnace internal structure of continuous annealing of metal strips and other heat treatments. Background technique [0002] In order to improve the properties of the metal strip and make the strip reach the required thickness, the metal strip is widely subjected to cold rolling with multiple passes and large reductions. After that, cold work hardening will occur. Therefore, before the metal strip is made into a product, it must be annealed in a furnace to eliminate cold work hardening. Otherwise, the metal strip has high hardness and poor plasticity, making subsequent processing impossible. conduct. [0003] There are many kinds of energy used for heating in continuous tunnel annealing furnace, such as gas, oil, natural gas and electricity. Among them, electric energy is widely used because it is the easiest to obta...

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): C21D9/62C21D1/26
Inventor 龚建达
Owner 无锡华精新材股份有限公司