Casting pouring gate of large barrel titanium alloy casting with wall thickness of 1.5 mm

Abstract

The utility model discloses a casting pouring gate of a large barrel titanium alloy casting with the wall thickness of 1.5 mm. The casting pouring gate comprises a transverse pouring gate and a transverse pouring gate, the middle part of the cross gate is connected with a sprue; the gap pouring gate is connected with the circumferential outer side of the transverse pouring gate; the gap pouring gate is connected with a connecting pouring gate for mold filling of the cylinder wall of the side edge of the casting; and the inner side of the circumferential direction of the cross gate is connected with an ingate for realizing bottom pouring type pouring on the bottom of the casting. When the casting is poured and filled, the centrifugal disc rotates clockwise, and molten metal liquid passes through the bottom of the casting filled at the bottom of the inner pouring gate on the circumferential inner side of the spiral transverse pouring gate and passes through the cylinder wall of the casting filled at the bottom of the connecting pouring gate on the gap pouring gate on the circumferential outer side of the spiral transverse pouring gate, so that the poured casting is completely filled without the defect of insufficient casting; and the problem of insufficient casting defect caused by incomplete mold filling of the cast after complete injection type casting is solved.

Description

Technical Field

[0001] The utility model relates to a casting runner for a large cylindrical titanium alloy casting with a wall thickness of 1.5 mm, and belongs to the technical field of casting runners. Background Art

[0002] The production of titanium alloy castings generally adopts investment vacuum centrifugal casting. In order to achieve stable filling of molten metal, a bottom pouring system is generally adopted, and the molten metal fills the mold from the bottom of the casting upward, see Chinese patent announcement No. CN108480565B.

[0003] For large cylindrical castings over 1 meter with a wall thickness of 1.5mm, injection pouring is completely adopted. The cross-sectional area of ​​the casting itself limits the speed at which the molten metal fills the mold upward, resulting in the molten metal cooling before it flows into the mold. After pouring, the casting is not fully filled and has undercasting defects. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a casting runner for a large cylindrical titanium alloy casting with a wall thickness of 1.5 mm.

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

[0006] The utility model provides a casting runner for a large cylindrical titanium alloy casting with a wall thickness of 1.5 mm, comprising:

[0007] Horizontal runner;

[0008] The middle part of the horizontal runner is connected with a sprue;

[0009] It also includes a gap runner connected to the outer side of the horizontal runner;

[0010] The slit runner is connected to a connecting runner for filling the side wall of the casting;

[0011] The inner side of the runner is connected to an inner runner for realizing bottom pouring at the bottom of the casting.

[0012] The slit runners are multiple and spaced apart.

[0013] The top of the sprue is provided with a gate for pouring molten metal.

[0014] The connecting runners are multiple runners that are spaced and connected to the upper side of the casting.

[0015] A plurality of ingates are arranged at intervals on the inner side of the circumferential direction of the cross runner.

[0016] The runner is a spiral structure.

[0017] The beneficial effect of the utility model is that when the casting is poured and filled, the centrifugal disk is installed and rotated clockwise, and the molten metal liquid is poured into the bottom of the casting through the inner pouring channel on the circumferential inner side of the spiral cross runner, and the cylinder wall of the casting is poured into the bottom of the connecting pouring channel on the outer circumferential gap pouring channel of the spiral cross runner, so that the casting after pouring is completely filled without undercasting defects, which solves the problem of incomplete filling of the casting after pouring and the existence of undercasting defects due to completely injection pouring. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a main schematic diagram of the utility model;

[0019] Figure 2 It is a distribution diagram of the horizontal runner and the vertical runner of the utility model;

[0020] In the figure: 1-casting; 2-slit runner; 3-connecting runner; 4-inner runner; 5-cross runner; 7-sprue; 71-gate. DETAILED DESCRIPTION

[0021] The technical solution of the utility model is further described below, but the scope of protection required is not limited to the description.

[0022] like Figure 1 to Figure 2 shown.

[0023] The present invention discloses a casting runner for a large cylindrical titanium alloy casting with a wall thickness of 1.5 mm, comprising:

[0024] The spiral structure of the horizontal runner 5 is connected to a sprue 7 in the middle of the horizontal runner 5 , and a gate 71 is provided at the top of the sprue 7 . The molten metal is poured from the gate 71 into the sprue 7 and dispersedly flows into the spiral horizontal runner 5 .

[0025] It also includes a slot runner 2 connected to the outer side of the cross runner 5 in a circumferential direction, and there are multiple slot runners 2, for example, three slot runners; the slot runner 2 is connected to a connecting runner 3, and the slot runner 2 is connected to the upper side of the casting 1 through multiple spaced connecting runners 3.

[0026] The circumferential inner side of the runner 5 is connected to the ingrate 4 , and the circumferential inner side of the runner 5 is connected to the bottom surface of the casting 1 through a plurality of ingrates 4 distributed at intervals, and the molten metal is poured from the ingrate 4 to fill the casting 1 in a bottom pouring manner.

[0027] Before pouring the molten metal, the casting runner is installed on the centrifugal disk, and the centrifugal disk is started to rotate clockwise. The molten metal pouring cup enters the gate 71 and flows to the straight runner 7. After reaching the root of the straight runner 7, the molten metal is accelerated by the centrifugal force to fill the far end of the spiral cross runner 5 toward the outside. After the far end is full, the molten metal fills the gap runner 2 and the ingrowth 4, and fills the 1.5mm thick cylinder wall of the casting 1 through the connecting runner 3. Multiple connecting runners 3 are filled at multiple points, and the cylinder wall of the casting 1 is quickly filled. At the same time, the ingrowth 4 bottom fills the casting 1, thereby realizing the complete molding of the large cylindrical titanium alloy casting with a wall thickness of 1.5mm. When the casting 1 is poured and filled, the molten metal liquid passes through the spiral cross runner 5 to the inner inner runner 4 to fill the bottom of the casting, and the molten metal liquid passes through the spiral cross runner 5 to the connecting runner 3 on the outer gap runner 2 to fill the wall of the casting 1, so that the casting is completely filled after pouring without under-casting defects, which solves the problem of incomplete filling of the casting after pouring and the existence of under-casting defects when it is completely cast by injection pouring.

Claims

1. A casting runner for a large cylindrical titanium alloy casting with a wall thickness of 1.5 mm, characterized in that: include: Runner (5); The middle part of the horizontal runner (5) is connected with a straight runner (7); It also includes a slot runner (2) connected to the outer side of the runner (5) in the circumferential direction; The slit runner (2) is connected to a connecting runner (3) for filling the side wall of the casting (1); The inner side of the runner (5) is connected to an inner runner (4) for implementing bottom pouring at the bottom of the casting (1).

2. The casting runner of the 1.5 mm thick large cylindrical titanium alloy casting according to claim 1, characterized in that: The slit runners (2) are multiple and spaced apart.

3. The casting runner of the 1.5 mm thick large cylindrical titanium alloy casting according to claim 1, characterized in that: The top of the sprue (7) is provided with a pouring port (71) for pouring molten metal.

4. The casting runner of the 1.5 mm thick large cylindrical titanium alloy casting according to claim 1, characterized in that: The connecting runners (3) are multiple runners that are spaced and connected to the upper side of the casting (1).

5. The casting runner of the 1.5 mm thick large cylindrical titanium alloy casting according to claim 1, characterized in that: The cross runner (5) has a plurality of inner runners (4) distributed at intervals on the inner side in the circumferential direction.

6. The casting runner of the 1.5 mm thick large cylindrical titanium alloy casting according to claim 1, characterized in that: The runner (5) is a spiral structure.

Images