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Casting design method of 38W machine body

A casting design and machine body technology, applied in the direction of casting molding equipment, casting molds, casting mold components, etc., can solve the problems of easy cracks in castings, high quality requirements, complex structures, etc., to reduce sand sticking, ensure casting quality, improve The effect of molding quality

Inactive Publication Date: 2019-05-31
上柴动力海安有限公司
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  • Application Information

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Problems solved by technology

The total length of the fuselage is 2173mm, the width is 980mm, and the height is 830mm. The weight of the fuselage is 2040kg. The required material grade is HT250+Cu+Cr. The structure of the body is complex and the quality requirements are high. During production, castings are prone to defects such as cracks, shrinkage, size deviation, sand sticking, and pores. A new design idea is urgently needed to effectively solve the above problems.

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  • Casting design method of 38W machine body
  • Casting design method of 38W machine body
  • Casting design method of 38W machine body

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Embodiment Construction

[0034] Below in conjunction with specific embodiment, technical content of the present invention is elaborated:

[0035] A casting design method for a 38W body. The main cavity of the 38W body casting is a V-shaped structure, the lower part is an air cavity, and there are multiple shaft stops in the middle. The casting design method is sequentially performed by casting design-pouring design-riser design. Optimization, the design requirements are as follows:

[0036] 1) Casting design:

[0037] a. Pouring process confirmation: choose the vertical pouring method for pouring. The vertical pouring system refers to the pouring method in which the cylinder hole of the machine body faces downward and the foot plate faces upward, and resin sand mold is used for pouring;

[0038] b. Modeling: three out-of-box and eight-model models are adopted, namely the lower box, middle box and upper box. The lower box is made of air cooling, axle box core and side wall core model; the middle box d...

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Abstract

The invention discloses a casting design method of a 38W machine body. A main cavity of a casting of the 38W machine body is of a V-shaped structure, the lower part is an air cavity, a plurality of axial baffles are arranged in the middle, the casting design method is sequentially composed of casting design, pouring design and riser design, and optimization is carried out. According to the castingdesign method of the 38W machine body, cracks are reduced, shrinkage porosity is reduced, the size deviation is reduced, sand adherence is reduced, air holes are reduced, the molding quality of the casting is improved, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the casting field, in particular to a casting design method for a 38W machine body. Background technique [0002] 38W cylinder bore angle 60°, cylinder bore diameter ∮ 204mm, cylinder bore center distance 265mm, row A and row B cylinder bore misalignment spacing 53mm, minimum wall thickness 7mm, crankshaft tile surface thickness at the free end and output end They are 52 and 57mm respectively, the thickness of the crankshaft surface of the middle gear is 52mm, and the main thickness of the foot plate is 28mm. The total length of the fuselage is 2173mm, the width is 980mm, and the height is 830mm. The weight of the fuselage is 2040kg. The required material grade is HT250+Cu+Cr. The body structure is complex, the quality requirements are high, and castings are prone to defects such as cracks, shrinkage, size deviation, sand sticking, and pores during production. A new design idea is urgently needed to effectively solve the above...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/02B22C9/08B22C9/10B22C9/24
Inventor 郭建荣
Owner 上柴动力海安有限公司
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