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Light-colored alcohol-base paint

A light-colored alcohol-based, coating technology, used in coatings, casting equipment, molds, etc., can solve problems such as cracks, inability to prevent sticking sand, and the difference in expansion values ​​between coatings and sand molds, and achieves less pollution. , low cost, the effect of preventing the infiltration of molten iron and the formation of sticky sand

Inactive Publication Date: 2009-06-03
沈阳金安铸造材料厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, simply using soil-like graphite powder cannot play the role of anti-sticking sand, because a large amount of burning of soil-like graphite powder at high temperature can produce many voids in the coating layer to absorb expansion, resulting in a gap between the coating and the sand mold. large differences in expansion values ​​between and the appearance of cracks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The light-colored alcohol-based coating is composed of 16% zircon powder, 22% brown corundum powder, 10% mullite powder, 12% flake graphite powder, 6% forsterite powder, 2.68% organic binder, and suspended 15.2% of additives, 0.1% of additives, and 15.8% of solvents. The above-mentioned organic binder is phenolic resin. The above suspending agent is prepared from lithium bentonite and attapulgite at a ratio of 7:3. The additive is PVB. The solvent is 95% ethanol.

Embodiment 2

[0017] Light-colored alcohol-based paint is composed of 17% zircon powder, 21% brown corundum powder, 5% mullite powder, 14% flake graphite powder, 6.5% forsterite powder, 3% phenolic resin, 16% suspending agent, additives PVB 0.15%, the solvent concentration is 95% ethanol 17.1%. The above-mentioned suspending agent is prepared from lithium-based bentonite and attapulgite at a ratio of 7:5.

Embodiment 3

[0019] Light-colored alcohol-based paint is composed of 17.57% zircon powder, 21% brown corundum powder, 7% mullite powder, 11% flake graphite powder, 7% forsterite powder, 2.1% phenolic resin binder, and 16% suspending agent , additive PVB 0.12%, solvent concentration of 99% ethanol 18% formulated. The above suspending agent is prepared from lithium-based bentonite and attapulgite, and the proportioning ratio is 3:7.

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PUM

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Abstract

The light color alcohol-base paint is compounded with zirconite powder 15-25 wt%, brown alumina powder 20-35 wt%, mullite powder 5-15 wt%, flaky graphite powder10-25 wt%, forsterite powder 5-10 wt%, binder 2-4 wt%, suspending agent 15-25 wt%, assistant 0.01- 0.2 wt% and solvent 15-30 wt%. The light color alcohol-base paint has less pollution, low cost, capacity of preventing crack in sand model and capacity of avoiding molten iron permeation and sand fusion to raise casting quality.

Description

(1) Technical field [0001] The invention relates to a paint, in particular to a low-pollution, low-cost, light-colored alcohol-based paint. (2) Background technology [0002] Casting coatings are composed of refractory aggregates, binders, suspending agents, additives and solvents, among which refractory aggregates are the main part of the coating, and its physical and chemical properties determine the anti-sand sticking effect of the coating. Its selection depends on the type of casting metal and molding material. For iron castings, graphite powder was used as aggregate before the 1950s. played an important role. Graphite is a kind of carbon material. Natural graphite has two forms: amorphous earthy graphite powder and crystalline flake graphite. The price of earthy graphite powder is cheap, but its refractoriness is low, and it is easy to burn. It starts to oxidize at 500°C, and has a large amount of gas generation. It is not effective for anti-sticking sand of large iro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C3/00
Inventor 张健蔡永学周静一黄蓄芳张林
Owner 沈阳金安铸造材料厂