Sand lined metal mold casting method for manufacturing sand core for middle and rear axle castings for automobile

A sand-coated metal mold and manufacturing method technology, applied in cores, manufacturing tools, metal processing equipment, etc., can solve problems such as air hole defects, achieve accurate and consistent shape and position, reduce input costs, and smooth exhaust

Active Publication Date: 2012-07-04
浙江省机电设计研究院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide a kind of metal-type sand-coated manufacturing automobile middle bridge, which can solve the traditional chilled resin sand core and oil sand core casting rear axle castings, which are prone to pore defects. A Manufacturing Method of Ning Core for Rear Axle Castings

Method used

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  • Sand lined metal mold casting method for manufacturing sand core for middle and rear axle castings for automobile
  • Sand lined metal mold casting method for manufacturing sand core for middle and rear axle castings for automobile
  • Sand lined metal mold casting method for manufacturing sand core for middle and rear axle castings for automobile

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Embodiment Construction

[0016] See Figure 1~Figure 3 , The middle and rear axle cores in the present invention include the left core 1, the middle core 2, the right core 3, and the steel pipe 4.

[0017] The left ni core 1, the middle ni core 2, and the right ni core 3 are respectively produced on a core shooter with phenolic resin sand, and the production method is a conventional method. The connecting part of each section of the above-mentioned core and the adjacent connecting core is made into a square wedge 5, through the square wedge 5, the left core 1, the middle core 2, and the right core 3 are connected to each other to form an integral core I . The left ni core 1, the middle ni core 2, and the right ni core 3 are hollow inside, the hollow part is circular in cross section, and the three hollow parts together form a through hole 6, in which a steel pipe 4 and a steel pipe 4 are arranged The size of the steel pipe is matched with the through hole 6. The steel pipe 4 is preferably a steel pipe ...

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Abstract

The invention discloses a sand lined metal mold casting method for manufacturing a sand core for middle and rear axle castings for an automobile. The method is characterized by comprising the following steps of: dividing a middle and rear axle sand core into three sections, namely a left sand core, a middle sand core and a right sand core, and manufacturing the sand cores in a hollow mode respectively; and assembling the three sections of sand cores, forming a through hole in the middles of the three sections of sand cores, arranging a steel pipe of which the diameter is matched with that of the through hole in the through hole, forming a plurality of air vents on the steel pipe, and assembling the steel pipe and the three sections of sand cores to form a whole sand core. Therefore, in the process of pouring the castings, gases generated in the sand core can be discharged into the steel pipe through the air vents, are introduced to a sand core head through the steel pipe, pass througha gap between the sand core head and a casting mold and are smoothly discharged out of the casting mold. The method can be used for producing middle and rear axle castings through sand lined metal mold casting and also can be used for common sand casting production and resin sand casting production.

Description

Technical field [0001] The invention relates to a manufacturing method of a core used for manufacturing automobile middle and rear axle castings with metal mold sand coating. Background technique [0002] Automobile middle and rear axle castings are one of the largest castings in automobile axle systems. Automobile middle and rear axle castings are hollow castings, which need to be placed in the mold to form the inner cavity of the casting during casting production. The traditional production process of vehicle middle and rear axle castings mainly uses green sand machine modeling, and now it is also produced by chilled resin sand casting. The latest production method of automobile middle and rear axle castings is to use metal mold sand-coated casting technology. [0003] For the use of metal sand-coated castings for automobile middle and rear axle castings, due to the particularity of the metal sand-coated casting process, the requirements for the production of middle and rear ax...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/10B22C15/24
Inventor 潘东杰黄列群沈永华夏小红应浩薛存球马益诚何芝梅高强朱丹刘同帮洪华泽
Owner 浙江省机电设计研究院有限公司
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