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Technology for preparing incomplete globe cased grate core of hot air furnace

A technology of hot blast stove and core assembly, which is applied in the field of casting, which can solve the problems of prolonging the molding time, prone to choking, and large amount of gas generation, and achieve the effects of speeding up the production cycle, shortening the core-making time, and improving the yield

Inactive Publication Date: 2002-04-10
河北津西钢铁集团重工科技有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

It is not easy to lay the core. When the box is assembled, it is easy to fall the core and bury the core, which will reduce the yield. In addition, the material used for the conventional core production is resin sand, which has high dry strength, good diffusivity, and low cost, but During casting, the amount of gas generated is large, and it is easy to choke or catch fire, which directly affects the service life of the casting. At the same time, the wet strength of the sand core is very low, and it must be added with an appropriate amount of clay or binder to have a certain strength. , drying after core making prolongs the molding time

Method used

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  • Technology for preparing incomplete globe cased grate core of hot air furnace
  • Technology for preparing incomplete globe cased grate core of hot air furnace
  • Technology for preparing incomplete globe cased grate core of hot air furnace

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Embodiment Construction

[0021] figure 1 , figure 2 Shown is a schematic diagram of the shape and structure of a spherical shell-shaped hot blast stove grate. The upper and lower sides of this kind of grate are arched, and the two ends are arc-shaped side bars 3, and the vertical and horizontal intersecting grate ribs 2, and the two ends are connected to the side bars 3. Integrating into one, the vertically and horizontally intersecting grating plates 2 enclose 162 grating holes 1 with different sizes and shapes. More than 160 chips need to be produced according to the conventional method of mandrel making, which is labor-intensive and time-consuming. The size of the core body is not easy to guarantee, and the phenomenon of core pouring and core embedding is easy to occur during the general assembly, resulting in a low yield.

[0022] image 3 Shown is a schematic diagram of the shape and structure of a core assembly. Nine core plates 5 are arranged horizontally on the base 4. The upper surface is ...

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Abstract

A technology for manufacturing the grouped core of incomplete global grate for hot air furnace includes dividing the grate into bars according to the shape and position of grate plate and grate hole,longitudinal grouping, making grouped cores, numbering them, and casing with novel casting sand. Its advantages are saving labour and time, high percentage of finished products and smooth surface of castings.

Description

technical field [0001] The invention belongs to the category of casting technology, and in particular relates to a method for making spherical shell-shaped hot blast stove grate assembly cores for casting spherical shell-shaped hot-blast stove grates. Background technique [0002] The conventional method of casting furnace grates is to make a wooden mold according to the drawing according to the shape and structure of the casting, and then make a casting sand mold with the wooden mold as the base mold. For general parts, there are fewer problems, but the shape of the grate of the spherical shell hot blast stove is special, so it is not easy to make. The spherical shell-shaped grate should be divided into 6-8 symmetrically. Taking the largest grate as an example, 162 grate holes should be reserved, and the shape and size of each hole are different, and the number is large. It is not easy to lay the core. When the box is assembled, it is easy to fall the core and bury the cor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/00F23H1/00
Inventor 朱军李叔芬王连中蔡百文朱子然李贺军
Owner 河北津西钢铁集团重工科技有限公司
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