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Cast-in type burr cylinder sleeve and manufacturing method thereof

A production method and burr technology, applied in the direction of manufacturing tools, casting molding equipment, casting molds, etc., can solve the problems of the yield not exceeding 85%, affecting the combination of cylinder blocks, limiting the yield of burr-type cylinder liners, etc., and achieving thermal conductivity. Improve, combine the effect of improving performance

Active Publication Date: 2018-01-26
ZYNP GRP ANHUI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the existence of burrs, there will be more waste products in the demoulding process, especially the sharp burrs are easy to be oxidized, and the residual refractory coating is embedded and retained, which affects the subsequent combination with the cylinder, which are severely limited The yield rate of the burr-type cylinder liner is lowered, and the yield rate of the burr-type cylinder liner currently does not exceed 85%.

Method used

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  • Cast-in type burr cylinder sleeve and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 1) Heat 26Kg of palm wax, 12Kg of silicone resin, 2.3Kg of zinc stearate, 6.3Kg of sodium borohydride, 5.6Kg of nickel sulfide powder with a particle size of less than 50 microns and 80Kg of methanol at 95°C Stir, nitrogen protective gas is introduced during the stirring process, the temperature is lowered to room temperature after stirring for 10 minutes, and then emulsified with a high-shear homogeneous emulsifier at 1000r / min for 2 hours to obtain a release agent.

[0016] 2) Use a release agent to coat the inner wall of the mold with a protective layer, then melt the cast iron into molten iron, pour the molten iron into the mold, and cast it by centrifugal casting method. After cooling to room temperature, smash the mold to complete the release. die to obtain the cast-in burr cylinder liner. The yield of the cast-in burr cylinder liner is greater than 92.6%.

Embodiment 2

[0018] 1) Heat 28Kg of palm wax, 15Kg of silicone resin, 2.5Kg of zinc stearate, 6.5Kg of sodium borohydride, 5.7Kg of nickel sulfide powder with a particle size of less than 50 microns and 83Kg of methanol at 99°C Stirring, nitrogen protection gas is introduced during the stirring process, the temperature is lowered to room temperature after stirring for 12 minutes, and then emulsified with a high-shear homogeneous emulsifier at 2000r / min for 2.5 hours to obtain a release agent.

[0019] 2) Use a release agent to coat the inner wall of the mold with a protective layer, then melt the cast iron into molten iron, pour the molten iron into the mold, and cast it by centrifugal casting method. After cooling to room temperature, smash the mold to complete the release. die to obtain the cast-in burr cylinder liner. The yield of the cast-in burr cylinder liner is greater than 94.1%.

Embodiment 3

[0021] 1) Heat 30Kg of palm wax, 16Kg of silicone resin, 2.6Kg of zinc stearate, 6.8Kg of sodium borohydride, 5.8Kg of nickel sulfide powder with a particle size of less than 50 microns and 85Kg of methanol at 100°C Stir, nitrogen protective gas is introduced during the stirring process, the temperature is lowered to room temperature after stirring for 15 minutes, and then emulsified with a high-shear homogeneous emulsifier at 3000r / min for 2 hours to obtain a release agent.

[0022] 2) Use a release agent to coat the inner wall of the mold with a protective layer, then melt the cast iron into molten iron, pour the molten iron into the mold, and cast it by centrifugal casting method. After cooling to room temperature, smash the mold to complete the release. die to obtain the cast-in burr cylinder liner. The yield of the cast-in burr cylinder liner is greater than 91.9%.

[0023] In the above-mentioned embodiments, the inner wall of the mold is provided with a cavity suitable ...

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Abstract

The invention relates to a cast-in type burr cylinder sleeve and a manufacturing method of the cast-in type burr cylinder sleeve. Mushroom-shaped burrs are arranged on the outer portion of a cylindersleeve body, after follow-up cylinder block molten aluminum casting, combination performance between the cast-in type burr cylinder sleeve and an engine is significantly improved, the cast-in type burr cylinder sleeve is stripped with strong external force, outer circle protrusions of the cast-in type burr cylinder sleeve still remain in the cylinder block, and the heat conducting performance of the cast-in type burr cylinder sleeve is significantly improved. During casting, a specially-prepared mold release agent is adopted, the burrs are not prone to oxidation, the follow-up combination of the cast-in type burr cylinder sleeve and the engine is not influenced, and the yield of the cast-in type burr cylinder sleeve can reach 94%.

Description

technical field [0001] The invention relates to the technical field of automobile cylinder liners, in particular to a cast-in burr liner and a manufacturing method thereof. Background technique [0002] The cylinder liner is the abbreviation of the cylinder liner. It is inlaid in the cylinder barrel of the cylinder block and forms the combustion chamber together with the piston and the cylinder head. Cylinder liners are divided into two categories: dry cylinder liners and wet cylinder liners. The cylinder liner whose back side does not contact the cooling water is called a dry cylinder liner, and the cylinder liner whose back side is in contact with cooling water is a wet cylinder liner. The dry cylinder liner has a thinner thickness, simple structure and convenient processing. The wet cylinder liner is in direct contact with the cooling water, so it is beneficial to the cooling of the engine, and is conducive to the miniaturization and weight reduction of the engine. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F1/00B22C3/00B22D13/02
Inventor 黄德松
Owner ZYNP GRP ANHUI CO LTD
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