Cast iron evanescent mode paint and preparation method thereof

A technology of lost foam and coating, applied in casting molding equipment, coating, mold and other directions, can solve the problems of low cost performance of coatings, high scrap rate, many defects, etc., and achieve convenient construction, good thixotropy, and excellent performance. Effect

Inactive Publication Date: 2015-04-29
SHILIN LUOHE METALLURGY EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a cast iron lost foam coating and a preparation method thereof, which can solve the problems of many internal defects of castings, severe sticky sand at risers or pla

Method used

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  • Cast iron evanescent mode paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0015] Example 1:

[0016] The cast iron lost foam coating is composed of the following raw materials: activated alumina 2kg, iron oxide 0.5 kg, silica 13 kg, bauxite 12 kg, quartz sand 20 kg, zircon powder 4 kg, silicon carbide 1.5 kg, potassium feldspar 1.5 kg, silica sol 3 kg, bentonite 1.5 kg, attapulgite 1.5 kg, sub-nano lithium magnesium silicate 0.25 kg, sodium pyrophosphate 0.03 kg, talc 1 kg, white latex 4 kg, xanthan gum 0.5 kg, BY Binder 1 kg, CMC 1.5 kg, sodium benzoate 0.02 kg, water 33.46 kg.

[0017] It is prepared according to the following steps: ①Bentonite, attapulgite, xanthan gum and CMC are hydrolyzed separately; ②Mixed xanthan gum and CMC after hydration, and sodium benzoate is added; ③Sub-nano lithium magnesium silicate and sodium pyrophosphate are mixed Then, add water to make a saturated solution; ④Mix the bentonite, attapulgite, the materials in ② and the rest of the water that have been made in the water, add BY binder, white latex and silica sol, and mi...

Example Embodiment

[0018] Example 2:

[0019] Cast iron lost foam coating is composed of the following raw materials: activated alumina 1.5 kg, iron oxide 1 kg, silica 5 kg, bauxite 3 kg, quartz sand 30 kg, zircon powder 5 kg, silicon carbide 1 kg, potassium feldspar 1 kg, Silica sol 2kg, bentonite 1kg, attapulgite 1kg, sub-nanolithium magnesium silicate 0.2kg, sodium pyrophosphate 0.02kg, talc 2kg, white latex 3kg, xanthan gum 0.3kg, BY binder 1.5kg, CMC1kg, Sodium benzoate 0.02kg, water 40.46kg.

[0020] The preparation method is the same as in Example 1.

Example Embodiment

[0021] Example 3:

[0022] Cast iron lost foam coating is composed of the following raw materials: activated alumina 5kg, iron oxide 3kg, silica 15kg, bauxite 2kg, quartz sand 10kg, zircon powder 8kg, silicon carbide 5kg, potassium feldspar 2kg, silica sol 0.1kg , Bentonite 1kg, attapulgite 1kg, sub-nanolithium magnesium silicate 2kg, sodium pyrophosphate 0.4kg, talc 3kg, white latex 1.5kg, xanthan gum 3kg, BY binder 0.1kg, CMC 0.1kg, sodium benzoate 0.06kg, 37.74kg of water.

[0023] The preparation method is the same as in Example 1.

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Abstract

The invention discloses cast iron evanescent mode paint, which is prepared from the following raw materials in parts by weight: 0.1-15 parts of aluminum oxide, 0.1-10 parts of ferric oxide, 5-30 parts of silicon dioxide, 2-20 parts of bauxite, 10-50 parts of silica sand, 2-15 parts of zircon power, 0-10 parts of silicon carbide, 0.5-10 parts of potash feldspar, 0.1-5 parts of silica sol, 1-5 parts of bentonite, 0.1-8 parts of attapulgite, 0.01-5 parts of lithium magnesium silicate, 0.01-1 part of sodium pyrophosphate, 0.1-8 parts of talcum powder, 1-5 parts of a white emulsion, 0.1-8 parts of xanthan gum, 0.1-5 parts of a BY binder, 0.1-5 parts of CMC, 0.01-1 part of sodium benzoate and 30-200 parts of water. The paint has the excellent property; a coating is tightly combined with an evanescent mode model, so that the casting precision and the invariance invariant are ensured; the coating is slightly sintered at a high temperature; and a very small air hole is formed in the surface, so that the timely elimination of gas generated by thermal decomposition of synthetic resin can be effectively ensured; and the internal defects are reduced.

Description

technical field [0001] The invention relates to the technical field of casting coatings, in particular to a cast iron lost foam coating and a preparation method thereof. Background technique [0002] With the rapid development of the foundry industry, large-scale casting and precision casting are increasing day by day, and the size and internal defect control of castings are becoming more and more strict. In addition, the concept of environmental protection is deeply rooted in the hearts of the people, and higher requirements are put forward for the environmental protection of the foundry industry. [0003] Traditional casting is generally sand casting, and the production process requires a large amount of resin sand and water glass sand, and most of the molding sand is resin sand. In the production process, the molding sand is difficult to recycle and reuse, the noise is loud during production, and a large number of core boxes are required when the casting is complex; the f...

Claims

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Application Information

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IPC IPC(8): B22C3/00
CPCB22C3/00
Inventor 刘墨宋君广辛俊杰张进马林
Owner SHILIN LUOHE METALLURGY EQUIP
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