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Casting method of cylinder cover

A cylinder head and casting technology, which is applied in casting molding equipment, casting molds, casting mold components, etc., can solve the problems of unfavorable quality control, fast metal liquid flow rate, high product cost, and achieve high production efficiency, improved cylinder head quality, Good surface quality

Inactive Publication Date: 2013-04-24
QINGDAO SANHESHAN CASTING GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the current traditional engine cylinder head casting process, during the casting process, the molten metal flows fast, the turbulence is severe, the gas is brought in, and more oxide slag is generated, resulting in slag inclusions, sand inclusions, pores, shrinkage cavities, and looseness in the castings. , cracks and other defects, the rejection rate is as high as 30-40%, which makes the product cost higher; moreover, the traditional top pouring casting process itself has experience characteristics, resulting in strong randomness in the molding process, which is not conducive to quality control

Method used

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Examples

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Effect test

Embodiment

[0013] For the casting method of the cylinder head in this embodiment, the casting system is designed as two left and right branches, which are respectively arranged on both sides of the intake and exhaust passages. The bottom column casting process is adopted, and the flow sequence of the molten metal is sprue cup, direct pouring Channel, choke section, transition section from choke section to runner, runner, ingate, casting cavity. The molten metal enters the sprue in an inclined manner through the sprue cup, and then transfers to the runner through the choke section, the transition section from the choke section to the runner, and the molten metal enters the casting cavity through the inner runner.

[0014] In the casting method of the cylinder head, after the molten metal enters the sprue cup, it first focuses in the sprue cup, and after rising to a certain height, the molten metal flows into the sprue, and the sprue is in a full state, avoiding the inclusion of inclusions....

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PUM

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Abstract

The invention discloses a casting method of a cylinder cover, comprising the following steps: designing a casting system into a left and a right branches; respectively arranging on both sides of an inlet and exhaust passage; and adopting a foundation type casting technology, wherein the sequence of molten metal flowing is a pouring cup, a downsprue, choked flow section, a choked flow section to a runner transition section, a runner, an ingate and a casting die cavity in sequence. The casting method of the cylinder cover is high in flexibility, high in production efficiency and good in comprehensive economy; produced castings are good in surface quality and few in defects of air vents, slag blowholes and the like, and the quality of the cylinder cover is obviously improved; and the casting is condensed in sequence from bottom to top, so that smooth filling and air exhaust of molten metal are ensured.

Description

[0001] technical field [0002] The invention belongs to the technical field of casting, and in particular relates to a method for casting a cylinder head. [0003] Background technique [0004] In the current traditional engine cylinder head casting process, during the casting process, the molten metal flows fast, the turbulence is severe, the gas is brought in, and more oxide slag is generated, resulting in slag inclusions, sand inclusions, pores, shrinkage cavities, and looseness in the castings. , cracks and other defects, the rejection rate is as high as 30-40%, which makes the product cost higher; moreover, the traditional top pouring casting process has its own experience characteristics, resulting in strong randomness in the molding process, which is not conducive to quality control. [0005] Contents of the invention [0006] In order to overcome the above-mentioned technical problems existing in the field of existing engine cylinder head casting technology, the...

Claims

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Application Information

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IPC IPC(8): B22C9/22B22C9/08
Inventor 李宁波
Owner QINGDAO SANHESHAN CASTING GROUP