A fiber insulation riser material for casting

A technology for thermal insulation risers and fibers, which is applied to casting molding equipment, molds, mold components, etc., can solve the problems of decreased thermal insulation effect, loss of thermal insulation effect, etc. Effect

Active Publication Date: 2021-10-22
浙江佳虹新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, with the continuous increase of the amount of refractory filler added, the thermal insulation effect of the fiber thermal insulation riser material shows a downward trend, or even loses the thermal insulation effect

Method used

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  • A fiber insulation riser material for casting
  • A fiber insulation riser material for casting
  • A fiber insulation riser material for casting

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Embodiment 1

[0024] The fiber insulation riser material for casting of the present embodiment comprises the following components in parts by weight:

[0025] 60 parts of aluminum silicate fiber, 30 parts of magnesium oxychloride cement containing calcium oxide, 10 parts of silicon micropowder, 2 parts of iron oxide, and 4 parts of carbon powder.

[0026] Among them, magnesium oxychloride cement containing calcium oxide, commonly known as Sorel cement, has good fire resistance and low thermal conductivity. The main raw materials are light-burned magnesium and magnesium chloride, which form MgO-MgCl in aqueous solution. 2 -H 2 O ternary reaction system. The main product has four crystal phases: 2MgO MgCl 2 ·8H 2 O, 3MgO MgCl 2 ·8H 2 O, 5MgO MgCl 2 ·8H 2 O and 9MgO·MgCl 2 ·8H 2 O.

[0027] The lightly burned magnesia of the present embodiment adopts magnesite, and the 120-mesh sieve is taken as the material (not limited to 120 mesh, as long as the fineness of magnesite is greater th...

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Abstract

The invention belongs to the technical field of thermal insulation risers, and specifically relates to a fiber thermal insulation riser material for casting, which comprises the following components in parts by weight: 60 to 80 parts of aluminum silicate fiber, 20 to 80 parts of magnesium oxychloride cement containing calcium oxide 35 parts, silicon micropowder 5-10 parts, iron oxide 1-3 parts, carbon powder 2-5 parts. The fiber thermal insulation riser material for casting of the present invention is based on the aluminum silicate fiber thermal insulation riser material with silicon micropowder as refractory filler and magnesium oxychloride cement as binder, and iron oxide and carbon powder are added to construct the riser Covering agent, that is, a riser covering agent composed of microsilica powder, aluminum oxide in aluminum silicate fiber, iron oxide, calcium oxide in magnesium oxychloride cement, magnesium oxide, and carbon powder. It has dual functions of heating and heat preservation. Improve the feeding effect of the riser and increase the density of the riser structure, so that the riser material has high compressive strength and good fire resistance.

Description

technical field [0001] The invention belongs to the technical field of thermal insulation risers, and in particular relates to a fiber thermal insulation riser material for casting. Background technique [0002] In casting production, some castings will produce shrinkage cavity and porosity after solidification. This is because during the casting process, the cooling time of the casting is longer, and the metal parts in the mold shrink, but there is not enough molten metal to feed the shrinkage. . The resulting shrinkage cavity and shrinkage porosity seriously affect the compactness of castings, resulting in low quality castings. [0003] For existing riser materials, during the casting process, the molten metal in the riser and the molten metal in the casting solidify at the same time, and the molten metal used for feeding in the riser only accounts for 10-14% of the total molten metal in the riser, and the utilization efficiency Low, poor feeding effect. In order to imp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/08B22C1/18B22C1/02
CPCB22C1/02B22C1/181B22C9/088
Inventor 徐冠清徐竟航
Owner 浙江佳虹新材料科技有限公司
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