Casting molding process for oil bottle sprue type cover body

Abstract

The invention relates to an oil bottle sprue type cover body casting molding process. The casting molding process is characterized by comprising the following specific casting molding processes: S1, arranging the position of an inverted mold; s2, a casting runner of the mold is designed; s3, smelting of molten aluminum; s4, forming an oil bottle pouring gate type cover body; the pouring gate type cover body of the oil bottle is cast and formed in an inverted low-pressure liquid lifting casting and forming mode; a convex hull type expanding casting cavity structure is arranged, the diameter of the convex hull type expanding casting cavity structure is larger than that of a pouring gate, the top of a convex hull type expanding casting cavity is higher than the horizontal height of a forming runner, molten aluminum can be sprayed on the top wall of the convex hull type expanding casting cavity when entering the forming runner upwards, splashing of the molten aluminum is prevented, and meanwhile feeding can be conducted on a formed cover body; and casting defects are reduced, and a formed product is higher in strength and better in compactness.

Description

Technical Field

[0001] The invention relates to the technical field of oil bottle pouring gate casting, in particular to a casting and molding process of an oil bottle pouring gate type cover body. Background Art

[0002] The oil bottle gate cover is a trumpet-like annular structure. The general casting method is to use the gate to cast it in the upper positive direction. This molding method has the following problems: First, the cover structure is prone to aluminum liquid splashing during forward casting, and the aluminum liquid surface is prone to uneven cooling, resulting in a large number of pores; and the defects at the confluence position of the aluminum liquid surface cannot be compensated for shrinkage. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a casting process for an oil bottle pouring gate type cover, which can solve the problem that a general oil bottle pouring gate type cover adopts forward casting and has many defects.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: a casting molding process of a pouring-gate type cover of an oil bottle, the innovation of which is: the specific casting molding process is as follows: S1: Inverted mold position setting: The molding mold of the oil bottle pouring mouth type cover is set to a liquid-rising low-pressure casting molding mold with the pouring mouth at the bottom, a crucible melting and insulation furnace is set below the liquid-rising low-pressure casting molding mold, and a liquid-rising pipeline is set on the crucible melting and insulation furnace to be connected to the pouring mouth of the liquid-rising low-pressure casting molding mold; S2: Design of the casting flow channel of the mold: The casting flow channel of the oil bottle gate type cover is connected to the top of the gate, and a convex hull type enlarged diameter casting cavity is provided at the top of the gate, and a molding flow channel of the oil bottle gate type cover is formed in the circumferential direction of the convex hull type enlarged diameter casting cavity; the top of the convex hull type enlarged diameter casting cavity is higher than the horizontal height of the molding flow channel; S3: Melting of aluminum liquid: using a crucible melting and holding furnace, adding 0.3% aluminum titanium boron of the total mass before melting; melting the aluminum ingot in the crucible melting and holding furnace: and controlling the final temperature of the aluminum liquid to be between 710℃-730℃; at the same time, heating the model and controlling the temperature of the model to be between 45℃-55℃; S4: Oil bottle gate type cover molding: The molten aluminum liquid in the crucible melting and holding furnace is pressed into the casting molding mold through the riser pipe at 0.11Mpa, and the filling time is 85s-95s; the pressure holding time is 35min-45min; after the pressure holding is completed, the pressure is released and it is ensured that the box is unpacked after 3 hours.

[0005] Furthermore, the top end surface of the convex-type expanded-diameter casting cavity is an arc-shaped curved surface.

[0006] Furthermore, the diameter of the convex-type expanded-diameter casting cavity is greater than the diameter of the gate.

[0007] The advantages of the present invention are: 1) In the present invention, the oil bottle gate type cover body is cast and formed by adopting an inverted low-pressure liquid rising casting molding method; a convex hull type enlarged diameter casting cavity structure is provided, the diameter of which is larger than the gate diameter, and the top of the convex hull type enlarged diameter casting cavity is higher than the horizontal height of the forming flow channel, and the aluminum liquid can be on the top wall of the convex hull type enlarged diameter casting cavity when entering the forming flow channel upward, so as to prevent the splashing and turbulence of the aluminum liquid and at the same time, the shrinkage of the formed cover body can be compensated, thereby reducing casting defects, and the formed product has higher strength and better density. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0009] Figure 1 The present invention is a process flow chart of casting and molding of a pouring-gate type cover for an oil bottle.

[0010] Figure 2 This is a structural diagram of a casting product of an oil bottle pouring-gate cover according to the present invention.

[0011] Figure 3 The present invention is a cross-sectional view of an oil bottle pouring-gate cover casting product. DETAILED DESCRIPTION

[0012] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0013] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0014] like Figure 1 Only Figure 3 The casting process of a pouring-mouth type cover of an oil bottle is shown, and the specific casting process is as follows: S1: Inverted mold position setting: The molding mold of the oil bottle pouring mouth type cover is set to a liquid-rising low-pressure casting molding mold with the pouring mouth at the bottom, a crucible melting and insulation furnace is set below the liquid-rising low-pressure casting molding mold, and a liquid-rising pipeline is set on the crucible melting and insulation furnace to be connected to the pouring mouth of the liquid-rising low-pressure casting molding mold; S2: Design of the casting flow channel of the mold: The casting flow channel of the oil bottle gate type cover is connected to the top of the gate, and a convex hull type enlarged diameter casting cavity is provided at the top of the gate, and a molding flow channel of the oil bottle gate type cover is formed in the circumferential direction of the convex hull type enlarged diameter casting cavity; the top of the convex hull type enlarged diameter casting cavity is higher than the horizontal height of the molding flow channel; S3: Melting of aluminum liquid: using a crucible melting and holding furnace, adding 0.3% aluminum titanium boron of the total mass before melting; melting the aluminum ingot in the crucible melting and holding furnace: and controlling the final temperature of the aluminum liquid to be between 710℃-730℃; at the same time, heating the model and controlling the temperature of the model to be between 45℃-55℃; S4: Oil bottle gate type cover molding: The molten aluminum liquid in the crucible melting and holding furnace is pressed into the casting molding mold through the riser pipe at 0.11Mpa, and the filling time is 85s-95s; the pressure holding time is 35min-45min; after the pressure holding is completed, the pressure is released and it is ensured that the box is unpacked after 3 hours.

[0015] The top end surface of the convex enlarged diameter casting cavity is an arc-shaped curved surface.

[0016] The diameter of the convex enlarged casting cavity is larger than the diameter of the gate.

[0017] The working principle of the present invention is: an oil bottle gate type cover body is cast and formed by adopting an inverted low-pressure liquid rising casting molding method; a convex hull type expanded diameter casting cavity structure is set, and its diameter is larger than the gate diameter, and the top of the convex hull type expanded diameter casting cavity is higher than the horizontal height of the forming flow channel. When the aluminum liquid enters the forming flow channel upward, it can be sprayed on the top wall of the convex hull type expanded diameter casting cavity to prevent the splashing of the aluminum liquid and at the same time, the formed cover body can be compensated for shrinkage, thereby reducing casting defects, and the formed product has higher strength and better density.

[0018] Those skilled in the art should understand that the present invention is not limited to the above-mentioned embodiments. The above-mentioned embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and improvements, and these changes and improvements shall all fall within the scope of the present invention claimed for protection.

Claims

1. A casting process for a pouring-gate type cover of an oil bottle, characterized in that: The specific casting process is as follows: S1: Inverted mold position setting: The molding mold of the oil bottle pouring mouth type cover is set to a liquid-rising low-pressure casting molding mold with the pouring mouth at the bottom, a crucible melting and insulation furnace is set below the liquid-rising low-pressure casting molding mold, and a liquid-rising pipeline is set on the crucible melting and insulation furnace to be connected to the pouring mouth of the liquid-rising low-pressure casting molding mold; S2: Design of the casting flow channel of the mold: The casting flow channel of the oil bottle gate type cover is connected to the top of the gate, and a convex hull type enlarged diameter casting cavity is provided at the top of the gate, and a molding flow channel of the oil bottle gate type cover is formed in the circumferential direction of the convex hull type enlarged diameter casting cavity; the top of the convex hull type enlarged diameter casting cavity is higher than the horizontal height of the molding flow channel; S3: Melting of aluminum liquid: using a crucible melting and holding furnace, adding 0.3% aluminum titanium boron of the total mass before melting; melting the aluminum ingot in the crucible melting and holding furnace, and controlling the final temperature of the aluminum liquid to be between 710℃-730℃; heating the model at the same time and controlling the temperature of the model to be between 45℃-55℃; S4: Oil bottle gate type cover molding: The molten aluminum liquid in the crucible melting and holding furnace is pressed into the casting molding mold through the riser pipe at 0.11Mpa, and the filling time is 85s-95s; the pressure holding time is 35min-45min; after the pressure holding is completed, the pressure is released and it is ensured that the box is unpacked after 3 hours.

2. The process for casting a pouring-gate type cover for an oil bottle according to claim 1, characterized in that: The top end surface of the convex enlarged diameter casting cavity is an arc-shaped curved surface.

3. The process for casting a pouring-gate type cover for an oil bottle according to claim 1, characterized in that: The diameter of the convex enlarged casting cavity is greater than the diameter of the gate.

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