CN202861331U - Mould core for main shaft casting - Google Patents

Abstract

The utility model relates to a mould core for a main shaft casting. The mould core comprises a cast iron inner core and a sand layer, wherein the sand layer covers the cast iron inner core. The mould core for the main shaft casting provided by the utility model has the advantages that since the cast iron inner core is covered with the sand layer, air holes in the mould core can be effectively avoided and an obtained product has less air holes, which is beneficial for subsequent processing and achieving high percent of pass of products.

Description

A kind of casting main shaft casts core

Technical field

The utility model relates to the technology of die manufacturing field, specifically a kind of casting main shaft casts core.

Background technology

Present mould is manufactured in the enterprise, the core of producing casting main shaft casts is that the precoated sand that adopts is made all over, the cost of precoated sand is very high, and the core pore of making is many, casting product air holes out is many, brought a lot of troubles to following process, the qualification rate of product is often very low.

The utility model content

For the deficiency that above-mentioned similar technical problem exists, the purpose of this utility model provides a kind of casting main shaft casts core.

The technical solution of the utility model is: a kind of casting main shaft casts core, comprise cast iron inner core, layer of sand, and it is characterized in that: the outside of cast iron inner core is coated with one deck layer of sand.

The utility model has the advantages that: whole core adopts the outside structure that covers layer of sand of cast iron inner core, can effectively avoid the pore in the core, and the product air holes of producing is few, is easy to following process, and the qualification rate of product is high.

Description of drawings

Fig. 1 is front view of the present utility model.

Fig. 2 is top view of the present utility model.

The specific embodiment

Now by reference to the accompanying drawings, technology contents of the present utility model is described further.

As shown in Figure 1, 2, the outside of cast iron inner core 1 is coated with one deck layer of sand 2.During production, core is put into die casting, the casting out product air holes seldom, qualification rate is very high.

Claims (1)

1. a casting main shaft casts core comprises cast iron inner core (1), layer of sand (2), and it is characterized in that: the outside of cast iron inner core (1) is coated with one deck layer of sand (2).

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