Slag collecting groove mold suitable for annular castings

Abstract

The utility model relates to a slag collecting groove mould suitable for annular castings, which comprises an upper mould and a lower mould, an annular casting cavity is arranged in the lower mould, an annular slag collecting groove is arranged on a butt joint face of the upper mould and the lower mould, and the annular slag collecting groove is communicated with the top of the annular casting cavity. According to the slag collecting groove mold suitable for the annular casting, the slag collecting groove is formed in the upper mold to collect waste slag through the floating characteristic of scum, the structure is simple, and the situation that the quality of the casting is affected due to the fact that the waste slag is left on the top of the annular casting is effectively avoided.

Description

Technical Field

[0001] The utility model relates to a slag collecting trough mould suitable for annular castings. Background Art

[0002] Scum and dross are common non-metallic inclusions in castings. The basic components of scum and dross are oxides and silicates, etc., and they usually appear on the top of the casting.

[0003] The main causes of slag are: melting of low-melting-point materials in the furnace lining during smelting; oxidation of metal charge and separation of impurities therein; fine particles of scattered molding materials in the mold; metal flushing into the runner during pouring; too much low-melting-point materials in the molding material, etc. The resulting slag will float to the top of the casting because its density is lower than that of the main body of the casting, and will eventually be formed at the top of the casting. At this time, it is necessary to grind or cut off the slag part, but cutting will affect the overall shape of the casting. Failure to grind or cut off will affect its quality, which needs to be improved urgently. Utility Model Content

[0004] In view of the deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a slag collecting trough mold suitable for annular castings, which not only has a reasonable structure but also has a good effect in removing waste slag without affecting the castings themselves.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a slag collecting trough mold suitable for annular castings, comprising an upper mold and a lower mold, the lower mold having an annular casting cavity built therein, an annular slag collecting trough is opened at the joint surface between the upper mold and the lower mold, and the annular slag collecting trough is communicated with the top of the annular casting cavity, and a gate is vertically arranged in the upper mold and connected to the annular slag collecting trough.

[0006] Furthermore, the cross-section of the annular slag collecting trough is trapezoidal, the upper bottom of which is connected to the pouring gate, and the lower bottom of which is connected to the annular casting cavity.

[0007] Furthermore, the lower end of the annular slag collecting trough protrudes from the outer end of the top of the annular casting cavity.

[0008] Compared with the prior art, the utility model has the following beneficial effects: since the slag generated during the casting process floats in the slag collecting ring after molding, it is finally necessary to cut and separate along the connection between the slag collecting ring and the casting, and remove the slag collecting ring to retain the complete annular casting, thereby ensuring the quality of the casting.

[0009] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model.

[0011] In the figure: 1-upper mold, 2-lower mold, 3-annular casting cavity, 4-annular slag collecting groove, 5-gate. DETAILED DESCRIPTION

[0012] In order to make the above features and advantages of the present invention more obvious and easy to understand, embodiments are given below with reference to the accompanying drawings for detailed description as follows.

[0013] like Figure 1 As shown, a slag collecting trough mold suitable for annular castings includes an upper mold 1 and a lower mold 2, wherein the lower mold has an annular casting cavity 3 built in it, an annular slag collecting trough 4 is provided at the joint surface between the upper mold and the lower mold, i.e., the parting surface, and the annular slag collecting trough is communicated with the top of the annular casting cavity, and a gate 5 is vertically arranged in the upper mold to communicate with the annular slag collecting trough.

[0014] In the embodiment of the utility model, the cross section of the annular slag collecting trough is trapezoidal, the upper bottom of which is connected to the pouring gate, and the lower bottom of which is connected to the annular casting cavity.

[0015] In an embodiment of the utility model, the lower end of the annular slag collecting trough protrudes from the outer end of the top of the annular casting cavity, so as to facilitate the judgment of the connection surface between the slag collecting ring and the top of the molded casting after the annular slag collecting trough is cast, and is more conducive to the subsequent cutting of the slag collecting ring part from the connection surface.

[0016] The working principle of the embodiment of the utility model is as follows: first, a casting method is selected. If sand mold casting is selected, a sand model cavity and a sand core are first formed in the lower mold, then the upper mold cover is set on the lower mold, and finally the casting is completed from the pouring gate. After forming, the corresponding molding sand is knocked out, and the slag generated during the casting process floats in the slag collecting ring after forming. Finally, it is only necessary to cut and separate along the connection between the slag collecting ring and the casting. The slag collecting ring can be removed to retain the complete annular casting, thereby ensuring the quality of the casting.

[0017] The utility model is not limited to the above-mentioned best implementation mode. Anyone can derive other forms of slag collecting trough molds suitable for annular castings under the inspiration of the utility model. All equivalent changes and modifications made according to the scope of the patent application of the utility model shall fall within the scope of the utility model.

Claims

1. A slag collecting trough mold suitable for annular castings, characterized by: It includes an upper mold and a lower mold, wherein the lower mold has an annular casting cavity built in it, an annular slag collecting groove is opened at the joint surface between the upper mold and the lower mold, and the annular slag collecting groove is communicated with the top of the annular casting cavity, and a gate is vertically arranged in the upper mold to communicate with the annular slag collecting groove.

2. A slag collecting trough mold suitable for annular castings according to claim 1, characterized in that: The cross section of the annular slag collecting trough is trapezoidal, the upper bottom of which is connected with the pouring gate, and the lower bottom of which is connected with the annular casting cavity.

3. A slag collecting trough mold suitable for annular castings according to claim 2, characterized in that: The lower end of the annular slag collecting groove protrudes from the outer end of the top of the annular casting cavity.

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