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A casting method based on a new type of oil pump shell mold

An oil pump body and a new type of technology, applied in the field of hydraulic parts, can solve problems such as difficult grinding of parting surface burrs, broken sand cores, insufficient strength, etc., to achieve the effects of reducing processing costs, ensuring casting quality, and reducing shrinkage and shrinkage cavities

Active Publication Date: 2019-04-23
江苏力源金河铸造有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the entire system of the automobile engine, the oil pump body is the main body of the oil pump, but different oil pump bodies need to be cast through the matching oil pump body shell mold during the casting process, which is now used for oil pump body castings with complex appearance Shell type, the parting surface burr of the lower shell is not easy to polish; in addition, in order to cast a thicker oil pump body pipeline, the corresponding sand core in the oil pump body shell type needs to use a thinner sand core, but its strength is not enough. It is easy to cause the fracture of the sand core

Method used

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  • A casting method based on a new type of oil pump shell mold
  • A casting method based on a new type of oil pump shell mold
  • A casting method based on a new type of oil pump shell mold

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Embodiment

[0031] This embodiment is based on a casting method of a new type of oil pump casing, and the casting method includes the following steps:

[0032] (1) First, use metal to make the metal template required for the oil inlet pump body;

[0033] (2) Next, heat the metal template to 180-280°C, and then cover the mold sand hardened by heat on the metal template to solidify the molding sand;

[0034] (3) Then, the molding sand is heated and solidified to form a shell mold, such as figure 1 As can be seen from the schematic diagram shown, the shell type is composed of an upper shell and a lower shell 2, and the upper shell and the lower shell 2 are molded to form an oil pump body cavity. The upper shell includes a shell body 11, and the shell body 11 There is an exhaust port 12 in the center of one side, and the cavity of the oil pump body is symmetrically distributed on both sides of the exhaust port, and a gap 13 is provided on the side of the housing body 11 adjacent to the exhau...

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Abstract

The invention relates to a casting method based on a novel oil pump body shell mould. The casting method comprises the following steps that (1) heating and solidifying are conducted on molding sand to form the shell mould, the shell mould consists of an upper shell body and a lower shell body, and after mould clamping is conducted on the upper shell body and the lower shell body, an oil pump body mould cavity is formed; (2) a set of sand cores of an oil pump body is formed through chromite sand, the sand cores are correspondingly an inner sand core and an outer sand core, the sand cores are combined to form a sand core main body, and the sand core main body is horizontally arranged in the lower shell body; (3) a sand box is manufactured through sand, the upper shell body and the lower shell body are embedded in the sand box, a sand layer covers a cavity between the outer surfaces of the upper shell body and the lower shell body and the inner side of the sand box , and the sand layer is internally provided with a gating and risering system which communicates with the shell mould; and (4) casting is conducted on the interior of the mould cavity through the gating and risering system, and the oil pump body is formed. The casting method has the advantages that through the casting method, burrs of parting mould surfaces of the oil pump body are easy to polish, and sand core fracture in the casting process is not easily caused.

Description

technical field [0001] The invention belongs to the technical field of hydraulic parts, and in particular relates to a casting method based on a new type of shell mold of an oil pump body. Background technique [0002] As the core component of a car, the performance of the car engine is directly related to the safety and performance of the car. The engine module of the automobile engine, the oil pump in the lubrication module is used to increase the oil pressure and maintain a certain amount of oil, and at the same time force oil supply to the friction parts of the engine. The performance of the engine directly affects the performance of the automobile engine. [0003] In the entire system of the automobile engine, the oil pump body is the main body of the oil pump, but different oil pump bodies need to be cast through the matching oil pump body shell mold during the casting process, which is now used for oil pump body castings with complex appearance The shell type, the pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/04B22C9/22B22C9/10B22C9/12
CPCB22C9/04B22C9/10B22C9/12B22C9/22
Inventor 徐红云毛进学沈彬
Owner 江苏力源金河铸造有限公司
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