Integral dewaxing port structure for investment precision casting module

Abstract

The utility model discloses an integral dewaxing port structure for a precision investment casting module. The integral dewaxing port structure comprises a dewaxing port front end, a flash end, a blocking face end and a blocking end. And the dewaxing port front end, the flash end, the plugging surface end and the plugging end are circumferential rotary bodies. As the convex flash end on the periphery of the plugging surface end is connected with the plugging end, after dewaxing, the plugging surface end is separated from the plugging end, and then the plugging surface end can be bonded, sealed, tightly attached and covered through refractory mortar to plug the front end of the dewaxing port, and no thread pair exists in plugging. The problem that when a thread pair is screwed, rotary tangential force is generated on the shell, and the shell at a dewaxing opening is prone to cracking is solved.

Description

Technical Field

[0001] The utility model relates to an integral dewaxing port structure for an investment casting die set, belonging to the technical field of investment casting. Background Art

[0002] Investment casting requires the use of wax molds to form a shell after sandblasting. After the shell is formed, the wax mold is heated and melted. In order to achieve smooth discharge of wax liquid from the shell, a dewaxing port is required (see Chinese patent announcement number CN105478672B).

[0003] When a spiral installation form of dewaxing port is adopted, a rotational tangential force will be generated on the mold shell when the thread pair is screwed together, which may easily cause cracks in the mold shell at the dewaxing port. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an integral dewaxing port structure for an investment precision casting die set.

[0005] The utility model is realized through the following technical solutions.

[0006] The utility model provides an integrated dewaxing port structure for an investment casting die set, comprising:

[0007] The front end of the dewaxing port, the flash end, the sealing surface end and the sealing end.

[0008] The front end of the dewaxing port is connected with a casting wax mold.

[0009] The front end of the dewaxing port is tapered.

[0010] The front end of the dewaxing port away from the casting wax mold has a blocking end, which is connected to the blocking surface end. The outer periphery of the blocking surface end has a raised burr end connected to the blocking end; the front end of the dewaxing port, the burr end, the blocking surface end and the blocking end are circular gyroscopes.

[0011] The beneficial effect of the utility model is that since the outer periphery of the sealing surface end is provided with a raised flash end connected to the sealing end, after dewaxing, the sealing surface end can be separated from the sealing end and then be bonded and sealed again with refractory mud to tightly cover the front end of the dewaxing port to seal the sealing surface. The sealing surface has no threaded pair, which solves the problem that when the threaded pair is screwed together, a rotational tangential force is generated on the mold shell, which can easily cause cracks in the mold shell at the dewaxing port. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a main schematic diagram of the utility model;

[0013] In the figure: 1-dewaxing port structure; 11-dewaxing port front end; 12-flash end; 13-sealing surface end; 14-sealing end. DETAILED DESCRIPTION

[0014] The technical solution of the utility model is further described below, but the scope of protection required is not limited to the description.

[0015] like Figure 1 shown.

[0016] The present application discloses an integrated dewaxing port structure 1 for an investment casting die set, comprising:

[0017] The front end 11 of the dewaxing port is connected to the main runner and the thick position of the casting wax mold 2, and the front end 11 of the dewaxing port is conical.

[0018] The plugging end 14 is located at the rear end of the front end 11 of the dewaxing port. After the subsequent flash end 12 is removed, the plugging surface end 13 is fixedly covered by bonding and sealing with refractory mud.

[0019] The sealing surface end 13 is located at the rear end of the sealing end 14, and a raised burr end 12 is provided on the outer periphery of the sealing surface end 13 to connect with the sealing end 14. The front end 11 of the dewaxing port, the sealing end 14, the sealing surface end 13 and the burr end 12 are circular bodies of revolution.

[0020] The front end 11 of the dewaxing port, the sealing end 14, the sealing surface end 13 and the flash end 12 are composed of a wax mold. When the mold shell is formed by sandblasting and solidification, the front end 11 of the dewaxing port and the casting wax mold 2 are continuous. After the flash end 12 is cut to expose the wax, the wax liquid formed by heating and melting the wax mold is discharged from the flash end 12. When the wax liquid flows out, the mold shell formed by the flash end 12 and the sealing surface end 13 loses the connection with the wax as a whole and separates from the sealing end 14. The sealing surface end 13 is tightly attached to the sealing end 14 through refractory mud bonding and sealing to cover the front end 11 of the dewaxing port, and then molten metal is injected into the dewaxed mold shell for solidification to form a casting.

[0021] Since the sealing surface end 13 has a raised flash end 12 connected to the sealing end 14 on the outer periphery, after dewaxing, the sealing surface end 13 can be separated from the sealing end 14 and then be tightly covered with refractory mud to seal the front end 11 of the dewaxing port. The sealing has no thread pair, which solves the problem that the thread pair will generate a rotational tangential force on the mold shell when it is screwed together, which may easily cause cracks in the mold shell at the dewaxing port.

Claims

1. An integrated dewaxing port structure for investment casting mold, characterized in that: include: A dewaxing port front end (11), a flash end (12), a plugging surface end (13) and a plugging end (14); The front end of the dewaxing port (11) is connected to a casting wax mold (2); The front end (11) of the dewaxing port away from the casting wax model (2) has a blocking end (14), the blocking end (14) is connected to the blocking surface end (13), and the outer periphery of the blocking surface end (13) has a protruding burr end (12) connected to the blocking end (14); the front end (11) of the dewaxing port, the burr end (12), the blocking surface end (13) and the blocking end (14) are circular bodies of revolution.

2. The integrated dewaxing port structure for investment casting mold set according to claim 1, characterized in that: The front end (11) of the dewaxing port is conical.

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