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Coating for iron founding and founding method

A pig iron casting and coating technology, applied in coating, casting molding equipment, casting molds, etc., can solve the problems of complex operation in the smelting process, inability to improve work efficiency, and prolong demolding time, so as to save operation time and not be difficult Adhesion, the effect of accelerating the release speed

Inactive Publication Date: 2019-02-22
徐州善势信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the smelting method currently used is complex in operation and takes a long time, and it is not easy to demould after the molten iron is cooled, so the demoulding time has to be extended, and the work efficiency cannot be improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Coating for pig iron casting, comprising the following components: water glass, talcum powder, pottery clay, white clay, microcrystalline paraffin, siloxane compound; parts by weight of each component are: 5 parts of water glass, 35 parts of talc powder, pottery clay 5 parts, white clay 3 parts, microcrystalline paraffin wax 3 parts, silicone compound 5 parts.

[0019] When in use, add iron ore and scrap iron to the open hearth furnace, and pass in argon; heat up to 1100°C until the iron ore and scrap iron are completely melted, add the preheated smelting agent, and stir for 5 minutes after adding until evenly stirred; skim off the surface For scum, lower the furnace temperature to 800°C, add refining agent for refining, and refine for 10 minutes to obtain molten iron; preheat the casting mold to 100°C, and then coat the above-mentioned coating with a thickness of 0.1mm. Dry at high temperature for later use; pour the molten iron into the mold, let it cool down and demo...

Embodiment 2

[0022] Coating for pig iron casting, comprising the following components: water glass, talcum powder, pottery clay, white clay, microcrystalline paraffin, siloxane compound; parts by weight of each component are: 5 parts of water glass, 35 parts of talc powder, pottery clay 5 parts, white clay 3 parts, microcrystalline paraffin wax 3 parts, silicone compound 4 parts.

[0023] When in use, add iron ore and scrap iron to the open hearth furnace, and pass in argon; heat up to 1100°C until the iron ore and scrap iron are completely melted, add the preheated smelting agent, and stir for 8 minutes after adding until evenly stirred; skim off the surface For scum, reduce the furnace temperature to 800°C, add refining agent for refining, and refine for 15 minutes to obtain molten iron; preheat the casting mold to 150°C, and then coat the above coating with a thickness of 0.2mm. Dry at high temperature for later use; pour the molten iron into the mold, let it cool down and demould it. ...

Embodiment 3

[0026] Coating for cast iron, comprising the following components: water glass, talcum powder, pottery clay, white clay, microcrystalline paraffin, siloxane compound; parts by weight of each component are: 10 parts of water glass, 40 parts of talc powder, pottery clay 10 parts, white clay 8 parts, microcrystalline paraffin 5 parts, silicone compound 6 parts.

[0027] When in use, add iron ore and scrap iron to the open hearth furnace, and pass in argon; heat up to 1100°C until the iron ore and scrap iron are completely melted, add the preheated smelting agent, and stir for 5 minutes after adding until evenly stirred; skim off the surface For scum, lower the furnace temperature to 800°C, add refining agent for refining, and refine for 10 minutes to obtain molten iron; preheat the casting mold to 100°C, and then coat the above-mentioned coating with a thickness of 0.1mm. Dry at high temperature for later use; pour the molten iron into the mold, let it cool down and demould it. ...

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Abstract

The invention discloses a coating for iron founding and a founding method. The coating comprises the following components including sodium silicate, talcum powder, argil, white clay, microcrystallinewax and a siloxane compound. Iron ore and waste iron are added into an open-hearth furnace, and argon is introduced; the temperature is increased till the iron ore and the waste iron are all molten, apreheated smelting agent is added; and after the preheated smelting agent is added, stirring is carried out for 5 min to 8 min till uniform stirring is achieved; surface dross is skimmed, the furnacetemperature is reduced to 800 DEG C, a refining agent is added for refining, a casting mold is preheated to range from 100 DEG C to 150 DEG C, a coating is sprayed, and the casting mold is dried at the temperature being 150 DEG C for standby application; and molten iron is poured into the mold, and demolding is carried out after cooling. The coating is simple in ratio and is not prone to adheringto the surface of pig iron; and after the coating is adopted, the surface of the mold is directly coated with the coating, operation is simple, the demolding speed can be increased, and operation time is greatly saved.

Description

technical field [0001] The invention relates to a coating for pig iron casting and a casting method, belonging to the field of alloy manufacturing. Background technique [0002] Cast iron is usually obtained by casting by smelting method. During operation, molten iron is poured into the mold and then removed from the mold to form it. However, the currently adopted smelting method has complex operation and long time in the smelting process, and it is not easy to demould after the molten iron is cooled, so the demoulding time has to be prolonged, and the work efficiency cannot be improved. Contents of the invention [0003] In view of the problems existing in the above-mentioned prior art, the purpose of the present invention is to provide a coating for casting and a casting method. The coating ratio is simple, and it is not easy to adhere to the pig iron surface. After the coating is adopted, the demoulding speed can be accelerated. Save operating time. [0004] In order ...

Claims

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Application Information

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IPC IPC(8): B22C3/00
CPCB22C3/00
Inventor 廖逸
Owner 徐州善势信息科技有限公司
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