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Casting technology of engine cylinder cover and core assembling structure

A technology of engine cylinder head and casting process, applied in casting molding equipment, casting molds, cores, etc., can solve the quality problems that are not well solved, the cleanliness and roughness of the inner cavity are poor, the wall thickness cylinder head air holes, etc. problems, to achieve the effect of reducing porosity defects, reducing the influence of human factors, and high core strength and dimensional accuracy

Inactive Publication Date: 2016-04-13
JINAN FOUNDRY PATTERN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its complex cavity, uneven wall thickness and other characteristics have caused defects such as air holes, trachoma, leakage, poor cleanliness and roughness of the inner cavity, and veins in the water jacket.
The traditional casting process does not solve the above quality problems well, and the scrap rate is as high as about 35%.

Method used

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  • Casting technology of engine cylinder cover and core assembling structure
  • Casting technology of engine cylinder cover and core assembling structure
  • Casting technology of engine cylinder cover and core assembling structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0052] Concrete implementation method of the present invention is as follows:

[0053] 1. Mold equipment production, according to the company's equipment conditions, design and manufacture sand molds and sand core molds that meet equipment requirements and casting process requirements;

[0054] 2. Use the molds and equipment to shape and core-making;

[0055] 3. Grinding and repairing the sand core and sand mold, and after the core is hardened, evenly paint the surface;

[0056] 4. Dry the core, and clean the core to ensure that the core sand mold is intact, without flesh and defects;

[0057] 5. Put the sand mold II flat on the level ground, place the sand cores into the sand mold II in sequence, check the relative position of the cores, and clean up the scattered sand in the mold;

[0058] 6. Lift the sand type I to match with the sand type II, and judge whether the sand type is in place by checking the parting surface gap;

[0059] 7. Fasten with bolts at the locking gro...

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Abstract

The invention discloses a casting technology of an engine cylinder cover and a core assembling structure, and relates to a casting technology. A sand mold is manufactured through the cold core box core manufacturing technology, an intra-cavity inner sand core is manufactured through the precoated sand hot core box core manufacturing technology, vertical casting is carried out after the appearance is locked through sand core discharging, and a good solution is provided for cylinder cover air holes, sand holes, leakage, inner cavities and surface smoothness. By means of implementation of the technology, the casting yield is increased to be more than 98%.

Description

technical field [0001] The invention discloses a casting process and core assembly structure of an engine cylinder head. Background technique [0002] The cylinder head is installed on the top of the cylinder block. It integrates the functions of intake and exhaust, cooling, lubrication and so on. Its bottom plane is also a part of the engine combustion chamber, and it is also an important and key part of the engine. The cylinder head is often in contact with high-temperature and high-pressure gas, and bears a large thermal load and mechanical load. Therefore, it is required to have high air tightness, anti-leakage and high overall strength. At the same time, the precision and roughness of the inner surface are required higher. However, its complex cavity, uneven wall thickness and other characteristics have caused defects such as cylinder head pores, sand holes, leakage, poor cleanliness and roughness of the inner cavity, and veins in the water jacket. The traditional cas...

Claims

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Application Information

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IPC IPC(8): B22C9/22B22C9/02B22C9/10
CPCB22C9/22B22C9/02B22C9/108
Inventor 薛祥军赵生彦王崇祯王可云国富忠张承斌郭文海钟章兴
Owner JINAN FOUNDRY PATTERN
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