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Formwork metthod for paired drawing walls of furnace in integral cast structural furnace

A technology of integral pouring and form-supporting method, applied in the direction of combustion method, building components, building structure, etc., can solve the problem that all the tie bolts cannot be taken out, and achieve the effect of solving the phenomenon of mold expansion, ensuring the integrity and reducing the loss.

Active Publication Date: 2006-10-04
CHINA MCC20 GRP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention overcomes the defect that the tension bolts cannot be taken out completely in the existing method for tensioning and supporting molds, and provides a method for tensioning and supporting molds for a furnace wall with an integral pouring structure

Method used

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  • Formwork metthod for paired drawing walls of furnace in integral cast structural furnace

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Embodiment 1: The hearth of a walking beam heating furnace is 43200mm long, 14400mm wide and 5000mm high. The thickness of the furnace wall is 100mm insulation board, 116mm lightweight insulation brick and 270mm refractory castable, with a total thickness of 486mm. The method of supporting the formwork with the aid of walking beams is adopted. Implementation situation: Due to the large spacing between the columns of the walking beam and the fact that the upper part of the horizontal beam of the walking beam can only be supported obliquely, the surface of the castable material in the vertical middle part bulges outward, up to 25mm; the surface of the castable material between the columns of the walking beam It bulges outward, up to 10mm, which does not meet the qualification requirements of the national inspection and evaluation standards at all, and the effect is very poor.

Embodiment 2

[0029] Embodiment 2: The hearth of the walking beam heating furnace is 48200mm long, 11400mm wide and 4800mm high. The thickness of the furnace wall is 116mm diatomite insulation brick, 116mm lightweight insulation brick and 270mm refractory castable, with a total thickness of 502mm. The top supporting formwork with the aid of walking beams is adopted, and the casting material is layered and the upper part is pulled against each other. Implementation situation: Since the tie rods must be cut off before the lower formwork is supported, the formwork and the top support will move outward when the tie rods are cut, forming a "Z"-shaped platform at the pouring layer, with a maximum of 12mm. Due to the deflection of the walking beam column itself after being stressed, when the formwork is supported to the height of the horizontal beam, the mold expansion on the surface of the castable still exists. The result is still not up to the qualification requirements of the national inspect...

Embodiment 3

[0030] Embodiment 3: The hearth of the walking beam heating furnace is 46200mm long, 13200mm wide and 4900mm high. The thickness of the furnace wall is 100mm insulation board, 116mm lightweight insulation brick and 250mm refractory castable, with a total thickness of 466mm. The formwork is supported by the walking beam, the double-row beams of the walking beam are connected and fixed, the walking horizontal beam is pulled obliquely to the furnace wall, and the upper part of the pouring material is layered. Implementation situation: Since the tie rods must be cut off before the lower branch film, the formwork and the top support frame will move outward when the tie rods are cut, forming a Z-shaped platform at the pouring layer, with a maximum of 10mm. Since the upper part of the horizontal beam is pulled obliquely to the steel plate of the furnace wall, the expansion of the upper part has been greatly improved. As a result, it barely reached the qualification requirements of t...

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Abstract

This invention is a method to support the model plate on the structural furnace wall by pull oppositely method. This method is: on the base of original method increase following: thicken nut (3), two end screw thread oppositely pull rod (9) and oppositely pull block (2). The productive steps are: 1) To define the position of the pull rod, fixed the thicken nut on the inside of the furnace-cover steel plate (4); 2) To brick the bottom of furnace wall. 3) To pour the heat preservation layer (11) and brick the fixed block (5); 4) To drill the steel model plate, and screwed in the thicken nut on the end of pull rod, the other end of this rod is fixed on the horizontal scaffold (6) by the connected member (8); 5) Pouring cement slurry; 6) To circulate the above steps till whole furnace be poured; 7) Pouring maintain materials to maintain it; 8) Take out model plate and pull rod; 9) to seal holes.

Description

technical field [0001] The invention relates to a method for double-drawing and supporting formwork used in the civil construction industry, in particular to a method for double-drawing and supporting the formwork of a furnace wall with an integral pouring structure. Background technique [0002] With the development, promotion and application of refractory castables, refractory castables are increasingly used as the lining of large industrial furnaces. Correspondingly, the method of supporting the formwork when pouring refractory castables has become a problem that the furnace building industry has been exploring, that is, how to support the formwork to meet the requirements of the current national inspection and evaluation standards for the surface flatness and verticality of the cast body. [0003] At present, the furnace wall of the pouring structure furnace mainly adopts the method of supporting the formwork. The problem of rod support and the generation of large inter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04G11/06E04B1/78F23M5/00
Inventor 刘剑魏宏超祃丽婷谢非姚德明
Owner CHINA MCC20 GRP CORP
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