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Design method for grate core of grid hole hot blast stove

A design method and furnace grate technology, applied in the field of casting, can solve problems such as difficulty in meeting production requirements and difficulty in casting production, and achieve the effects of low production cost, reduced number of sand cores, and reduced accumulation of errors

Inactive Publication Date: 2011-05-11
ANSTEEL HEAVY MACHINERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To meet this precision requirement, casting production is difficult, and the commonly used casting process tooling design is difficult to meet the production requirements

Method used

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  • Design method for grate core of grid hole hot blast stove
  • Design method for grate core of grid hole hot blast stove
  • Design method for grate core of grid hole hot blast stove

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0023] Below take the hexagonal mesh hole hot blast furnace grate sand core as an example to describe the embodiment of the present invention in conjunction with accompanying drawing.

[0024] See figure 1 , Hexagonal grid hole hot blast furnace grate casting diagram. See Figure 3-1 , Figure 3-2 , Figure 3-3 , the grate sand core of the hot blast furnace with hexagonal grid holes is composed of multiple sand core units, each sand core unit includes a lower core head 1, an upper core head 3, and a sand core body 2, and the lower core head is a frustum-shaped core head, whose size and shape match the size and shape of the ventilation holes of the corresponding regenerator lattice brick; the sand core body 2 is composed of two regular triangle ventilation hole cores 4 and a regular hexagonal ventilation hole core 5, The upper core head 3 connects two regular triangular ventilating hole cores 4 and a regular hexagonal ventilating vent core 5 to form a whole rhombus conjoine...

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PUM

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Abstract

The invention relates to the technical field of casting, in particular to a design method for a grate core of a grid hole hot blast stove. The grate core consists of a plurality of core units, wherein each core unit comprises a lower core head, an upper core head and a core body; the size and shape of the lower core head are matched with those of ventilated grid holes of a heat storage body checker brick corresponding to the lower core head; the core body consists of two regular triangular ventilated grid hole cores and a regular hexagonal ventilated grid hole core which are connected into an integrated diamond core through the upper core head; and the lower core head is arranged at the central position of the two regular triangular ventilated grid hole cores and the regular hexagonal ventilated grid hole core respectively. The design method has the advantages of meeting the requirement of casting accuracy and improving production efficiency.

Description

technical field [0001] The invention relates to the technical field of casting, and relates to a design method for a grate core of a hot blast stove with grid holes. Background technique [0002] The hot blast stove grate is the main casting of the hot blast stove grate support system of the ironmaking blast furnace, which is used to carry the checker brick regenerator on the upper part. The checker brick regenerator mostly adopts seven-hole checker brick with dense round holes, and its circular ventilation holes are arranged in an equilateral triangle. corresponding to the hole. For example, the hexagonal mesh furnace grate used in a domestic blast furnace is composed of numerous regular triangle, rectangle, and regular hexagonal ventilation holes. Each regular triangle ventilation hole in the furnace grate corresponds to one of the checker bricks. Circular ventilation holes, each rectangular ventilation hole corresponds to the six circular ventilation holes of the checke...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/10C21B9/10
Inventor 谢长发
Owner ANSTEEL HEAVY MACHINERY CO LTD