Self-inoculation paint

A self-inoculation and coating technology, applied in coating, casting molding equipment, casting molds and other directions, can solve the problems of increasing the manufacturing cost of cylinder liner, complicated formula, dangerous operation, etc., and achieves low cost, simple coating formula and simple manufacturing process. Effect

Active Publication Date: 2018-10-16
ZYNP GRP ANHUI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is a burr-like engine cylinder liner on the outer surface, which has greatly improved the thermal stability and firmness of the engine cylinder liner than the smoother surface. The burr-like outer surface is realized by coating molding, but the paint in the prior art has the defects of complex formula and expensive processing, which greatly increases the manufacturing cost of the cylinder liner; when forming burrs, it is necessary to add an inoculant to the high-temperature molten iron for inoculation, and the operation has certain danger

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A self-inoculating paint, the weight of each raw material is: halloysite 50g, egg shell 5g, graphene 1g, talcum powder 2g, silicon barium calcium inoculant 2g, disodium hydrogen phosphate 0.3g, and the balance is water;

[0018] The preparation method of this self-inoculating coating is:

[0019] (1) Activation of mineral clay: join halloysite in ball mill and grind and pulverize, add water and modulate into the halloysite solution that concentration is 30%, add the concentrated sulfuric acid solution of 45% while stirring, until the pH of clay solution is At 2.7, stop the addition of concentrated sulfuric acid, continue to stir for 15 minutes, measure the pH of the halloysite solution again to 2.8, put the acidified clay solution into a water bath ultrasonic instrument, and ultrasonicate for 10 minutes at a water bath temperature of 75 ° C, and cool to room temperature , filter, use purified water to rinse the filter residue, the pH of the filtrate to be rinsed is main...

Embodiment 2

[0024] A self-inoculating coating, the weight percent of each raw material is: halloysite 35g, egg shell 8g, graphene 2.5g, talcum powder 3.5g, silicon barium calcium inoculant 4.5g, disodium hydrogen phosphate 0.2g, water 40g;

[0025] The preparation method of this self-inoculating coating is:

[0026] (1) Activation of mineral clay: join halloysite in the ball mill and grind, add water and modulate into the halloysite solution that concentration is 35%, add the concentrated sulfuric acid solution of 50% while stirring, until the pH of clay solution is At 2.8, stop the addition of concentrated sulfuric acid, continue to stir for 20 minutes, measure the pH of the halloysite solution again to be 2.8, put the acidified clay solution into a water bath ultrasonic instrument, and ultrasonicate for 10 minutes at a water bath temperature of 80°C, then cool to room temperature , filter, rinse the filter residue with purified water, keep the pH of the leaching filtrate at 6.6 within 5...

Embodiment 3

[0029] A self-inoculating coating, the weight percentage of each raw material is: halloysite 60g, egg shell 3g, graphene 2g, talcum powder 2g, silicon barium calcium inoculant 1.5g, disodium hydrogen phosphate 0.2g, water 27.7g;

[0030] The preparation method of this self-inoculating coating is:

[0031] (1) Activation of mineral clay: join halloysite in ball mill and grind, add water and modulate into the halloysite solution that concentration is 32%, add the concentrated sulfuric acid solution of 43% while stirring, until the pH of clay solution is At 2.5, stop the addition of concentrated sulfuric acid, continue to stir for 20 minutes, measure the pH of the halloysite solution again to 2.7, put the acidified clay solution into a water bath ultrasonic instrument, and ultrasonicate for 10 minutes at a water bath temperature of 75-85 ° C, and cool Return to room temperature, filter, rinse the filter residue with purified water, keep the pH of the leaching filtrate at 6.3 with...

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Abstract

The invention discloses self-inoculation paint. The self-inoculation paint is prepared from the following raw materials in percentage by weight: 35-60% of mineral clay, 3-8% of egg shells, 1-2.5% of graphene, 1-3.5% of talcum powder, 1.5-4.5% of an inoculant, 0.2-0.6% of disodium hydrogen phosphate and the balance of water. The paint is simple in formula, is low in cost, and is simple in preparation process; the inoculant does not need to add into high-temperature molten iron in advance; after the inoculant in the paint is dissolved by molten iron, and positions of the original inoculant particles define holes, so that molten iron is quickly filled; and after the molten iron is cooled and crystallized, burrs are formed on blank, so that a cast-in type air cylinder sleeve which meets industrial requirements can be manufactured, and therefore, operations are safe.

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 self-inoculating coating. Background technique [0002] At present, due to the shortage of oil resources and environmental pollution, it is increasingly important to improve the fuel efficiency of automobile engines and reduce exhaust emissions. The two major components of an automobile engine are the piston and the cylinder liner. Among them, the cylinder liner requires its material to have properties such as high temperature resistance, wear resistance, pressure resistance, and light weight. The improvement of engine performance will inevitably put forward higher requirements on the material selection and processing of cylinder liners. At present, there is a burr-like engine cylinder liner on the outer surface, which has greatly improved the thermal stability and firmness of the engine cylinder liner than the smoother sur...

Claims

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Application Information

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IPC IPC(8): B22C3/00B22D13/02B22D27/18
CPCB22C3/00B22D13/02B22D27/18
Inventor 刘艳林张治纲孙光文
Owner ZYNP GRP ANHUI CO LTD
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