Coating for centrifugal casting and preparation method

A centrifugal casting and coating technology, which is applied to casting molding equipment, coatings, casting molds, etc., can solve the problems of high price, complex formula, harsh use conditions, etc., and achieve the effect of low cost, simple coating formula and simple manufacturing process

Active Publication Date: 2015-05-06
ZYNP GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When using metal mold centrifugal casting technology to produce the cylinder liner directly formed by the outer wall casting, the coating is the key; the existing coating for the cylinder liner is mainly ordinary thermal insulation coating, and its main function is to reduce the cooling speed of the blank during the casting process and ensure the roughness of the blank. The metallographic structure and internal quality protect the mold, and the outer diameter of the cast blank cannot meet the use requirements of the injection-type cylinder liner; while the existing coatings that can meet the production requirements of the cylinder liner are mostly complicated in formula, expensive, and relatively difficult to use. Harsh, which increases the manufacturing cost of the cylinder liner

Method used

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  • Coating for centrifugal casting and preparation method

Examples

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Comparison scheme
Effect test

Embodiment 1

[0012] A coating for centrifugal casting, made of the following raw materials in parts by weight: 3 parts of rectorite, 0.4 parts of sodium carboxymethylcellulose, 55 parts of quartz powder, 0.3 parts of ammonium lauryl sulfate, and 43 parts of water .

[0013] The preparation method of the coating for centrifugal casting comprises the following steps: taking rectorite, sodium carboxymethyl cellulose, and water according to the parts by weight, mixing, stirring evenly; then adding quartz powder, stirring evenly; finally adding ten Stir the dialkyl ammonium sulfate evenly to get the coating.

[0014] Coating Application

[0015] The coating prepared in this example is used in the preparation process of the cast-in cylinder liner, which includes the following steps: ①Smelting the molten iron to 1500°C and starting to take it out of the furnace, the weight percentage of each component in the molten iron is as follows: C 3.2% , S 0.05%, Si 2.5%, P 0.7%, Mn 0.7%, Cr 0.3%, Cu 0.4%...

Embodiment 2

[0019] A coating for centrifugal casting, made of the following raw materials in parts by weight: 1 part of rectorite, 0.1 part of sodium carboxymethylcellulose, 50 parts of quartz powder, 0.01 part of ammonium lauryl sulfate, and 40 parts of water .

[0020] The preparation method of the coating for centrifugal casting comprises the following steps: taking rectorite, sodium carboxymethyl cellulose, and water according to the parts by weight, mixing, stirring evenly; then adding quartz powder, stirring evenly; finally adding ten Stir the dialkyl ammonium sulfate evenly to get the coating.

Embodiment 3

[0022] A coating for centrifugal casting, made of the following raw materials in parts by weight: 5 parts of rectorite, 0.7 parts of sodium carboxymethylcellulose, 60 parts of quartz powder, 0.5 parts of ammonium lauryl sulfate, and 45 parts of water .

[0023] The preparation method of the coating for centrifugal casting comprises the following steps: taking rectorite, sodium carboxymethyl cellulose, and water according to the parts by weight, mixing, stirring evenly; then adding quartz powder, stirring evenly; finally adding ten Stir the dialkyl ammonium sulfate evenly to get the coating.

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Abstract

A coating for centrifugal casting is prepared by the following raw materials in parts by weight: 1-5 parts of rectorite, 0.1-0.7 part of sodium carboxymethylcellulose, 50-60 parts of quartz powder, 0.01-0.5 part of dodecyl ammonium sulfate and 40-45 parts of water. The coating disclosed by the invention is simple in formula, low in cost and simple in manufacturing process; and a cast-in type cylinder sleeve meeting industry requirements can be prepared together with the centrifugal casting process.

Description

technical field [0001] The invention belongs to the technical field of production of cast-in cylinder liners for engines, and in particular relates to a coating for centrifugal casting and a preparation method thereof. Background technique [0002] When using metal mold centrifugal casting technology to produce the cylinder liner directly formed by the outer wall casting, the coating is the key; the existing coating for the cylinder liner is mainly ordinary thermal insulation coating, and its main function is to reduce the cooling speed of the blank during the casting process and ensure the roughness of the blank. The metallographic structure and internal quality protect the mold, and the outer diameter of the cast blank cannot meet the use requirements of the injection-type cylinder liner; while the existing coatings that can meet the production requirements of the cylinder liner are mostly complicated in formula, expensive, and relatively difficult to use. Harsh, thereby i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00
CPCB22C3/00
Inventor 侯起飞邹悟会高广东刘治军
Owner ZYNP GRP
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