Centrifugal ball casting machine

Abstract

The utility model discloses a centrifugal ball casting machine, and belongs to the technical field of centrifugal ball casting machines. When centrifugal machining of the steel ball is needed, the heating pipe is opened, the preheating box is heated, the box door is opened after the preheating box is heated, heat is in contact with the spherical mold at the moment, the spherical mold is preheated, and in order to accelerate the preheating speed of the spherical mold, the spherical mold can be rotated and uniformly preheated; the molten steel is poured into the mold to be subjected to centrifugal machining forming, the temperature difference between the mold and the molten steel can be effectively shortened in the mode that the molten steel is poured into the mold after the spherical mold is preheated, air holes are effectively reduced during centrifugal forming, the using rigidity of the steel ball is improved, and the service life of the steel ball is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of centrifugal ball casting machines, in particular to a centrifugal ball casting machine. Background Art

[0002] The centrifugal ball casting machine is one of the main equipment for forming steel balls. The ball casting machine uses centrifugal rotation to pour the molten steel into the mold, and then obtains the cast ball through high-speed rotation. The cast ball obtained in this way has higher density and is more durable.

[0003] In the use of conventional centrifugal ball casting machines, the molten steel is directly poured into the mold for centrifugal molding. However, due to the temperature difference between the temperature inside the mold and the temperature of the molten steel, many pores will appear on the surface of the produced steel balls, affecting the service life of the steel balls. Utility Model Content

[0004] The purpose of the utility model is to provide a centrifugal ball casting machine to solve the above problems existing in the prior art.

[0005] Technical solution: A centrifugal ball casting machine comprises a fixed frame, a spherical mold is arranged inside the fixed frame, and a preheating box is arranged at the bottom of the spherical mold;

[0006] The preheating box comprises a box body, a heating tube is arranged inside the box body, a heat preservation cotton is fixedly installed on the inner wall of the box body, and a box door is installed on the side of the box body that abuts against the spherical mold, and the box door is slidably matched with the box body.

[0007] In a further embodiment, one side of the heating tube extends to the outside of the box body and is fixedly connected to a fixing seat.

[0008] In a further embodiment, the fixing seat is made of high temperature resistant material.

[0009] In a further embodiment, two heating tubes are provided and the heating tubes are positioned opposite to each other.

[0010] In a further embodiment, partitions are provided between the heating tubes.

[0011] In a further embodiment, a cover plate is provided on a side of the heating tube close to the box body.

[0012] In a further embodiment, fans are installed on both sides of the fixing base.

[0013] Beneficial effects:

[0014] When it is necessary to perform centrifugal processing of the steel ball, first open the heating tube to heat the preheating box. After the preheating box is heated, open the box door. At this time, the heat contacts the spherical mold to preheat the spherical mold. In order to speed up the preheating speed of the spherical mold, the spherical mold can be rotated to preheat the spherical mold evenly. After preheating for a period of time, pour the molten steel into the mold for centrifugal processing and molding. By preheating the spherical mold and then pouring the molten steel, the temperature difference between the mold and the steel liquid can be effectively shortened. During centrifugal molding, the appearance of pores can be effectively reduced, the rigidity of the steel ball can be improved, and the service life can be extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 It is a three-dimensional diagram of the preheating box of the utility model.

[0017] Figure 3 It is a side view of the preheating box of the utility model.

[0018] Figure 4 It is an internal view of the preheating box of the utility model.

[0019] Figure 5 It is an internal view of the preheating box of the utility model.

[0020] The accompanying drawings are marked as follows: 1. spherical mold; 2. feed port; 3. fixed frame; 4. preheating box; 5. box door; 6. box body; 7. heating tube; 8. fan; 9. fixed seat; 10. cover plate; 11. thermal insulation cotton; 12. partition. DETAILED DESCRIPTION

[0021] In the following description, numerous specific details are given in order to provide a more thorough understanding of the present invention.

[0022] It will be apparent, however, to one skilled in the art that the present invention may be practiced without one or more of these details.

[0023] In other examples, in order to avoid confusion with the present invention, some technical features known in the art are not described.

[0024] like Figures 1 to 5 As shown, a centrifugal ball casting machine is composed of a spherical mold 1, a feed port 2, a fixing frame 3, a preheating box 4, a box door 5, a box body 6, a heating tube 7, a fan 8, a fixing seat 9, a cover plate 10, a heat insulation cotton 11, and a partition 12.

[0025] like Figures 1 to 5 As shown, a spherical mold 1 is arranged inside the fixing frame 3, and a preheating box 4 is arranged at the bottom of the spherical mold 1;

[0026] The preheating box 4 includes a box body 6, a heating tube 7 is arranged inside the box body 6, a heat preservation cotton 11 is fixedly installed on the inner wall of the box body 6, and a box door 5 is installed on the side of the box body 6 that abuts against the spherical mold 1, and the box door 5 is slidably matched with the box body 6.

[0027] The spherical mold 1 is preheated by the preheating box 4 to reduce the temperature difference between the spherical mold 1 and the molten steel liquid, reduce the appearance of pores during centrifugation, and improve the service life and strength of the steel ball; generally, the preheating temperature of the spherical mold 1 will reach 110-300°.

[0028] One side of the heating tube 7 extends to the outside of the box body 6 and is fixedly connected to the fixing seat 9 .

[0029] The fixing seat 9 is used to fix the heating tube 7 to ensure that the position of the heating tube 7 remains unchanged and the heating is stable.

[0030] The fixing seat 9 is made of high temperature resistant material.

[0031] Because the temperature of the molten steel is high, the high temperature resistant material is used to ensure the stability of the seat, so there will be no melting or damage problems, ensuring stable use; at the same time, a device for providing power for the heating tube 7 is added outside the fixed seat 9 to ensure that the heating tube 7 works stably.

[0032] The two heating tubes 7 are provided, and the heating tubes 7 are located opposite to each other.

[0033] A partition 12 is provided between the heating tubes 7 .

[0034] The partition 12 is used to isolate the two heating tubes 7 to prevent the temperature from being transferred too quickly between the two tubes, which would cause the temperature of the heating tubes 7 to be too high, and cause problems such as premature aging, damage or overload.

[0035] A cover plate 10 is disposed on one side of the heating tube 7 close to the box body 6 .

[0036] Fans 8 are installed on both sides of the fixing base 9 .

[0037] The fan 8 accelerates the heat conduction in the preheating box 4, and can also cool the preheating box 4 when not in use.

[0038] The heat-insulating cotton 11 is installed on the six inner walls of the preheating box 4. When the heating tube 7 is heated, a certain amount of heat can be preserved. When the ball casting process is not needed for a period of time, the retained heat can be used during the processing to shorten the preheating time of the spherical mold 1 by the preheating box 4 and save processing time. At the same time, the heat-insulating cotton 11 is made of high-temperature resistant and fire-proof materials to ensure the safety of the preheating box 4 and protect the internal equipment from damage.

[0039] Processing through a centrifugal ball casting machine can effectively avoid the gate problem that occurs during ball casting, and the overall cast ball is smoother.

[0040] The working principle of this utility is as follows:

[0041] When the steel ball needs to be centrifugally processed, the heating tube 7 is first opened to heat the preheating box 4. After the preheating box 4 is heated, the box door 5 is opened. At this time, the heat contacts the spherical mold 1 to preheat the spherical mold 1. In order to speed up the preheating speed of the spherical mold 1, the spherical mold 1 can be rotated to uniformly preheat the spherical mold 1. After preheating for a period of time, the molten steel liquid is poured into the mold for centrifugal processing and molding. By preheating the spherical mold 1 and then pouring the molten steel liquid, the temperature difference between the mold and the steel liquid can be effectively shortened. During centrifugal molding, the appearance of pores can be effectively reduced, the rigidity of the steel ball can be improved, and the service life can be extended.

[0042] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings; however, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical scheme of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. A centrifugal ball casting machine, comprising a fixed frame (3), characterized in that: A spherical mold (1) is arranged inside the fixing frame (3), and a preheating box (4) is arranged at the bottom of the spherical mold (1); The preheating box (4) comprises a box body (6), a heating tube (7) is arranged inside the box body (6), a heat-insulating cotton (11) is fixedly installed on the inner wall of the box body (6), and a box door (5) is installed on the side of the box body (6) that abuts against the spherical mold (1), and the box door (5) and the box body (6) are slidably matched.

2. A centrifugal ball casting machine as claimed in claim 1, characterized in that: One side of the heating tube (7) extends to the outside of the box body (6) and is fixedly connected to the fixing seat (9).

3. A centrifugal ball casting machine as claimed in claim 2, characterized in that: The fixing seat (9) is made of high temperature resistant material.

4. A centrifugal ball casting machine as claimed in claim 1, characterized in that: Two heating tubes (7) are provided, and the heating tubes (7) are located opposite to each other.

5. A centrifugal ball casting machine as claimed in claim 1, characterized in that: A partition plate (12) is provided between the heating tubes (7).

6. A centrifugal ball casting machine as claimed in claim 1, characterized in that: A cover plate (10) is provided on one side of the heating tube (7) close to the box body (6).

7. A centrifugal ball casting machine as claimed in claim 2, characterized in that: Fans (8) are installed on both sides of the fixing seat (9).

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