阅读说明：本技术 一种熔模铸造半分体式浇口棒 (Investment casting semi-split gate stick ) 是由 李磊 于 2020-06-16 设计创作，主要内容包括：本发明公开了一种熔模铸造半分体式浇口棒,属于熔模铸造技术领域,包括蜡模以及安装在蜡模上方的浇口杯,浇口杯的顶部设有浇口杯下沿,浇口杯下沿底部两端均安装有分体排气筋,分体排气筋的底部设有独立补缩冒口,独立补缩冒口的底部通过内浇口与蜡模连接,独立补缩冒口的一侧设有渐变次流道,渐变次流道的另一端与浇口杯固定连接,浇口杯的底部设有主流道。本发明通过使熔模铸造浇口棒的功能得到拓展,解决低碳钢铸件落件难,效率低的问题,使更多的材质和更多的产品能够实现锤击落件。(The invention discloses an investment casting semi-split gate stick, which belongs to the technical field of investment casting and comprises a wax mould and a gate cup arranged above the wax mould, wherein the top of the gate cup is provided with a lower edge of the gate cup, two ends of the bottom of the lower edge of the gate cup are respectively provided with a split exhaust rib, the bottom of the split exhaust rib is provided with an independent feeding head, the bottom of the independent feeding head is connected with the wax mould through an inner gate, one side of the independent feeding head is provided with a gradient runner, the other end of the gradient runner is fixedly connected with the gate cup, and the bottom of the gate cup is provided with a main runner. According to the invention, the function of the investment casting gate stick is expanded, the problems of difficult dropping and low efficiency of low-carbon steel castings are solved, and more materials and more products can be hammered to drop the castings.)

1. The utility model provides an investment casting half-split type sprue bar, its characterized in that includes wax matrix (8) and installs sprue cup (2) of wax matrix (8) top, the top of sprue cup (2) is equipped with sprue cup down along (1), the sprue cup is down along (1) bottom both ends and all installs components of a whole that can function independently exhaust muscle (3), the bottom of components of a whole that can function independently exhaust muscle (3) is equipped with independent feeding head (6), the bottom of independent feeding head (6) pass through in runner (7) with wax matrix (8) are connected, one side of independent feeding head (6) is equipped with gradual change time runner (5), the other end of gradual change time runner (5) with sprue cup (2) fixed connection, the bottom of sprue cup (2) is equipped with sprue (4).

2. The investment casting semi-split gate stick according to claim 1, wherein the split vent rib (3) and the tapered secondary runner (5) are fixedly connected with the independent feeding head (6), and the split vent rib (3), the tapered secondary runner (5) and the gate cup (2) are communicated with each other.

3. The investment casting semi-split gate stick according to claim 1, wherein the inside of the gate cup lower edge (1), the gate cup (2), the split vent rib (3), the main runner (4), the tapered sub-runner (5), the independent feeding head (6) and the inner gate (7) are all hollow.

4. The investment casting semi-split gate stick according to claim 1, wherein the lower edge (1) of the gate cup extends beyond the edge of the gate cup (2) at both ends, and both split exhaust ribs (3) are curved split exhaust ribs.

5. An investment casting semi-split gate stick according to claim 1, wherein the lower rim (1) of the gate cup is a pouring stop position line.

6. The investment casting mold half-split gate stick according to any one of claims 1 to 5, wherein the casting process of the mold half-split gate stick is: taking a mould, assembling a tree, dewaxing the mould set, roasting, pouring and hammering a falling piece.

7. The investment casting half-split gate stick of claim 6, wherein said pattern extraction is: in the process of manufacturing the wax mould gate stick, the independent feeding head (6) is connected to the cup surface of the sprue cup (2) through the split exhaust rib (3) and the gradual change secondary runner (5), so that the strength and the integrity in the process of manufacturing a mould shell in the process of manufacturing the wax mould gate stick are ensured.

8. The investment casting half-split gate stick of claim 6, wherein the set of trees is: connecting the wax mould (8) to the semi-split gate bar through the inner gate (7) to form a complete mould set, and manufacturing a shell on the mould set to finally form the mould shell with certain strength.

9. The investment casting half-split gate stick of claim 6, wherein the die set dewaxing is: after wax liquid of the wax mould pouring gate rod and the wax mould body flows out, a mould shell with a cavity is formed, the pouring gate cup (2) and the split exhaust rib (3) are disconnected, and the pouring gate cup (2) is communicated with the independent feeding head (6) through the gradual change secondary runner (5).

10. The investment casting half-split gate stick of claim 6, wherein the bake-out casting is: when pouring, the molten metal firstly passes through the pouring cup (2), passes through the main runner (4) and the gradual change secondary runner (5), then flows into the mouth independent feeding head (6), and finally, a casting is poured and molded through the inner pouring gate (7).

Technical Field

The invention relates to a gate stick, in particular to an investment casting semi-split gate stick, and belongs to the technical field of investment casting.

Background

In investment precision casting, a casting head is required to be separated from a casting system after casting molding, and a casting body can be obtained. The common methods for removing the casting head include an oxygen acetylene gas cutting method, a sawing machine cutting method, a plasma cutting method, a hammering method and the like, wherein the hammering method is low in cost and high in efficiency. However, the hammering falling piece method is only suitable for castings with low material toughness and a small number of inner gates, such as cast iron such as gray iron and ductile iron, and part of cast steel with high carbon content such as ZG 310-570. For low-carbon steel with low carbon content and high toughness or products with a large number of inner gates, the casting head is difficult to remove by hammering. If the mode of hammering the casting body is forcibly adopted, the quality problems of the casting body such as crushing, deformation, cracking and the like are easily caused, and the loss is not paid.

Disclosure of Invention

The invention mainly aims to solve the defects in the prior art and provide an investment casting semi-split gate stick.

The purpose of the invention can be achieved by adopting the following technical scheme:

the utility model provides an investment casting half-split type sprue bar, includes the wax matrix and installs the pouring basin of wax matrix top, the top of pouring basin is equipped with follows under the pouring basin, the branch body exhaust muscle is all installed along bottom both ends under the pouring basin, the bottom of branch body exhaust muscle is equipped with independent feeding head, the bottom of independent feeding head pass through the ingate with the wax matrix is connected, one side of independent feeding head is equipped with the gradual change runner, the other end of gradual change runner with pouring basin fixed connection, the bottom of pouring basin is equipped with the sprue.

Preferably, the split exhaust rib and the gradual change secondary flow passage are fixedly connected with the independent feeding head, and the split exhaust rib, the gradual change secondary flow passage and the pouring cup are communicated with each other.

Preferably, the lower edge of the sprue cup, the split exhaust rib, the main runner, the gradual change secondary runner, the independent feeding head and the inner sprue are all hollow structures.

Preferably, two ends of the lower edge of the sprue cup extend out of the edge of the sprue cup, and the two split exhaust ribs are both bent split exhaust ribs.

Preferably, the lower edge of the pouring cup is a pouring stop position line.

Preferably, the pouring process of the semi-split gate stick is as follows: taking a mould, assembling a tree, dewaxing the mould set, roasting, pouring and hammering a falling piece.

Preferably, the modulus is: in the process of manufacturing the wax mould sprue bar, the independent feeding head is connected to the cup surface of the sprue cup through the split exhaust ribs and the gradual change secondary runner, so that the strength and the integrity of a mould shell manufacturing process in the process of manufacturing the wax mould sprue bar are ensured.

Preferably, the group tree is: and connecting the wax mould to the semi-split gate rod through the inner gate to form a complete mould set, and manufacturing a shell on the mould set to finally form the mould shell with certain strength.

Preferably, the die set dewaxing is: after wax liquid of the wax mould pouring gate rod and the wax mould body flows out, a mould shell with a cavity is formed, the pouring gate cup and the split exhaust rib are disconnected, and the pouring gate cup is communicated with the independent feeding head through the gradual change secondary runner.

Preferably, the baking and pouring: when pouring, the molten metal firstly passes through the pouring cup, passes through the main runner and the gradual change secondary runner, then flows into the independent feeding head of the opening, and finally, the casting is molded by pouring through the inner pouring gate.

The invention has the beneficial technical effects that: according to the investment casting semi-split gate stick disclosed by the invention, the function of the investment casting gate stick is expanded, the problems of difficult dropping and low efficiency of low-carbon steel castings are solved, and more materials and more products can be hammered to drop the castings.

Drawings

Fig. 1 is a schematic view of a wax pattern tree structure.

Fig. 2 is a partial schematic view of the mold block after casting.

In the figure: 1-lower edge of a sprue cup, 2-the sprue cup, 3-a split exhaust rib, 4-a main runner, 5-a gradual change runner, 6-an independent feeding head, 7-an inner sprue and 8-a wax mold.

Detailed Description

In order to make the technical solutions of the present invention more clear and definite for those skilled in the art, the present invention is further described in detail below with reference to the examples and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

As shown in fig. 1-2, the investment casting semi-split gate stick provided in this embodiment includes a wax mold 8 and a gate cup 2 installed above the wax mold 8, a lower edge 1 of the gate cup is disposed at the top of the gate cup 2, split exhaust ribs 3 are installed at two ends of the lower edge 1 of the gate cup, an independent feeding head 6 is disposed at the bottom of the split exhaust ribs 3, the bottom of the independent feeding head 6 is connected to the wax mold 8 through an inner gate 7, a gradual change secondary runner 5 is disposed on one side of the independent feeding head 6, the other end of the gradual change secondary runner 5 is fixedly connected to the gate cup 2, and a main runner 4 is disposed at the bottom of the gate cup 2.

In the present embodiment, as shown in fig. 1, the split exhaust rib 3 and the gradual change secondary runner 5 are both fixedly connected to the independent feeding head 6, and the split exhaust rib 3, the gradual change secondary runner 5 and the pouring cup 2 are all internally communicated. The lower edge 1 of the sprue cup, the sprue cup 2, the split exhaust rib 3, the main runner 4, the gradual change secondary runner 5, the independent feeding head 6 and the inner sprue 7 are all hollow structures. The two ends of the lower edge 1 of the pouring cup extend out of the edge of the pouring cup 2, and the two split exhaust ribs 3 are both bent split exhaust ribs. The lower edge 1 of the pouring cup is a pouring stop position line.

In this embodiment, as shown in fig. 1 and 2, the casting process of the semi-split gate stick is as follows: taking a mould, assembling a tree, dewaxing the mould set, roasting, pouring and hammering a falling piece. The mold taking is as follows: in the process of manufacturing the wax mould sprue bar, the independent feeding head 6 is connected to the cup surface of the sprue cup 2 through the split exhaust ribs 3 and the gradual change secondary runner 5, so that the strength and the integrity in the process of manufacturing a shell of a module in the process of manufacturing the wax mould sprue bar are ensured. The tree group is as follows: connecting the wax mould 8 to the semi-split gate bar through the inner gate 7 to form a complete mould set, and manufacturing a shell on the mould set to finally form the mould shell with certain strength. The dewaxing of the module is as follows: after wax liquid of the wax mould pouring gate rod and the wax mould body flows out, a mould shell with a cavity is formed, the pouring gate cup 2 and the split exhaust rib 3 are disconnected, and the pouring gate cup 2 is communicated with the independent feeding head 6 through the gradual change secondary runner 5. Roasting and pouring: when pouring, the molten metal firstly passes through the pouring cup 2, passes through the main runner 4 and the gradual change secondary runner 5, then independently feeds a shrink head 6 at the inlet, and finally, a casting is molded by pouring through the inner pouring gate 7. The investment casting shell making process is an investment pattern which is repeatedly coated, sanded and dried.

In this embodiment, as shown in fig. 1-2, the operation of an investment casting semi-split gate stick provided in this embodiment is as follows:

step one, modulus taking: in the process of manufacturing the wax mould sprue bar, the independent feeding head 6 is connected to the cup surface of the sprue cup 2 through the split exhaust ribs 3 and the gradual change secondary runner 5, so that the strength and the integrity in the process of manufacturing the wax mould sprue bar and the process of manufacturing a shell by a module are ensured.

Step two, tree grouping: connecting the wax mould 8 to the semi-split gate bar through the inner gate 7 to form a complete mould set, and manufacturing a shell on the mould set to finally form the mould shell with certain strength. Then, the mould shell adhered to the surface of the pouring cup in the shell manufacturing process is removed through knocking until the lower edge 1 of the pouring cup.

Thirdly, dewaxing the module: after the wax liquid of the wax mould pouring gate rod and the wax mould body flows out, a mould shell with a cavity is formed. At this time, the pouring cup 2 and the split vent rib 3 are disconnected, and the pouring cup 2 is communicated with the independent feeding head 6 through the gradual change secondary runner 5.

Step four, roasting and pouring: during pouring, the molten metal firstly passes through the pouring cup 2, passes through the main runner 4 and the gradual change secondary runner 5, then flows into the independent feeding head 6, and finally is poured and molded through the inner pouring gate 7, at the moment, the molten metal is poured onto the lower edge 1 of the pouring cup, and if the pouring is continued, the molten metal overflows from the periphery.

Fifthly, hammering and dropping the workpiece: the other sides of the independent feeding head 6, the pouring cup 2 and the independent feeding head 6 are respectively hammered for 3 times, so that the separation of the casting and the pouring system, namely the casting falling part, can be skillfully realized under the condition of not directly hammering the casting body.

In conclusion, in this embodiment, according to the investment casting half-split gate stick of this embodiment, the investment casting half-split gate stick that this embodiment provided makes the function of investment casting gate stick expanded, solves the low carbon steel foundry goods and falls a difficult, problem with low efficiency, makes more materials and more products can realize hammering and fall a piece.

The above description is only for the purpose of illustrating the present invention and is not intended to limit the scope of the present invention, and any person skilled in the art can substitute or change the technical solution of the present invention and its conception within the scope of the present invention.