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Heating and thermal insulation riser sleeve

A technology of thermal insulation riser sleeve and thermal insulation layer, which is applied in the field of alloy casting, can solve the problems of feeding resistance, flexibility and adaptability of thermal insulation riser sleeve, etc., and achieves simple shape and structure, convenient standardization and assembly line production. The effect of the riser feeding effect

Active Publication Date: 2015-02-25
GUIZHOU ANJI AVIATION PRECISION CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, most of the heating and heat preservation riser sleeves that appear on the market are developed specifically to meet the needs of large quantities of castings and steel castings on the molding line. When the casting process needs to be improved in order to improve the quality of the castings, especially in many Variety, small batch casting trial production, improvement and production, the flexibility and adaptability of this kind of insulation riser sleeve are limited; in addition, due to the wide crystallization interval of aluminum-magnesium alloy, it will cause shrinkage during the solidification process of the alloy. Therefore, in the actual process design and production, a larger riser size is required, which puts forward higher requirements for the thermal insulation effect of the riser sleeve, while the heating and heat preservation riser sleeves in the prior art are all aimed at ordinary casting The design has a very limited effect on improving the feeding effect of the riser of aluminum-magnesium alloy castings

Method used

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  • Heating and thermal insulation riser sleeve
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  • Heating and thermal insulation riser sleeve

Examples

Experimental program
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Effect test

Embodiment 1

[0024] A heating and heat preservation riser sleeve, comprising a thermal insulation layer 1 and a heating layer 2, the heating layer 2 is composed of several heating packs 3, and the heating packs 3 also include a heating agent layer 302 and a coating layer 301, the heating agent Layer 302 is 9 parts by weight of edible starch or calcium lignosulfonate powder, 11 parts by weight of potassium permanganate, 48 parts by weight of charcoal powder and 32 parts by weight of magnesium powder, fully mixed and pressed into a flat, thick It is a long block-shaped heating pack of 5 mm to 8 mm. According to the type of riser used, the type of insulation layer 1 is also different. The heating agent can be pressed into various specifications and wrapped in kraft paper to make a heating pack 3 for later use; Layer 1 is made of refractory insulation materials such as calcium silicate or aluminum silicate ceramic fiber. Place the thermal insulation base material of the thermal insulation laye...

Embodiment 2

[0027] A heating and heat preservation riser sleeve, comprising a thermal insulation layer 1 and a heating layer 2, the heating layer 2 is composed of several heating packs 3, and the heating packs 3 also include a heating agent layer 302 and a coating layer 301, the heating agent Layer 302 is 11 parts by weight of edible starch or calcium lignosulfonate powder, 9 parts by weight of potassium permanganate, 52 parts by weight of charcoal powder and 28 parts by weight of magnesium powder, which are fully mixed and pressed into a flat, thick It is a long block-shaped heating pack of 5 mm to 8 mm. According to the type of riser used, the type of insulation layer 1 is also different. The heating agent can be pressed into various specifications and wrapped in kraft paper to make a heating pack 3 for later use; Layer 1 is made of refractory insulation materials such as calcium silicate or aluminum silicate ceramic fiber. Place the thermal insulation base material of the thermal insul...

Embodiment 3

[0030] A heating and heat preservation riser sleeve, comprising a thermal insulation layer 1 and a heating layer 2, the heating layer 2 is composed of several heating packs 3, and the heating packs 3 also include a heating agent layer 302 and a coating layer 301, the heating agent Layer 302 is 10 parts by weight of edible starch or calcium lignosulfonate powder, 10 parts by weight of potassium permanganate, 50 parts by weight of charcoal powder and 30 parts by weight of magnesium powder, which are fully mixed and pressed into a flat shape with a thickness of It is a long block-shaped heating pack of 5 mm to 8 mm. According to the type of riser used, the type of insulation layer 1 is also different. The heating agent can be pressed into various specifications and wrapped in kraft paper to make a heating pack 3 for later use; Layer 1 is made of refractory insulation materials such as calcium silicate or aluminum silicate ceramic fiber. Place the thermal insulation base material ...

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Abstract

The invention discloses a heating and thermal insulation riser sleeve, and belongs to the technical field of alloy casting. The heating and thermal insulation riser sleeve comprises a thermal insulation layer and a heating layer, wherein the heating layer is fit with the inner wall of the thermal insulation layer and consists of a plurality of heating bags, and each heating bag comprises a heating agent layer and a coating layer. According to the technical scheme, a heating agent of the heating layer is used for processing, long block-shaped heating bags are manufactured, and heating bags with different models and amount are selected to be adhered to the inner wall of the thermal insulation layer according to requirements so as to form a complete heating layer, and thus riser sleeves with different models can be used and are convenient to use.

Description

technical field [0001] The invention belongs to the technical field of alloy casting, and relates to the sequential solidification technology of castings in light alloy casting, in particular to a heating and heat preservation riser sleeve. Background technique [0002] In casting production, during the solidification and shrinkage stage of castings, risers are often used to feed castings, and the application of heating and heat preservation riser technology is an important process measure to obtain high-quality castings. In order to meet the needs of the development of the foundry industry, various manufacturers of casting auxiliary materials have developed various styles of thermal insulation riser sleeves. For example, the invention patent No. 201220346420.1 discloses a heating and thermal insulation double-layer riser sleeve. The invention patent of 201320390269.6 discloses a heat-insulating riser sleeve, both of which combine the heat-insulating layer and the heat-gener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/08B22D27/04
CPCB22C9/088B22D27/04
Inventor 周从光殷亮红
Owner GUIZHOU ANJI AVIATION PRECISION CASTING
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