Production equipment and production method of vent plug

Abstract

The invention discloses production equipment and a production method of a vent plug. The production equipment comprises a hydraulic machine and a special mold, the hydraulic machine comprises a main machine, an upper pressing plate and a base which are sequentially connected from top to bottom. The special die is arranged between the upper pressing plate and the base; the special die comprises a pressing head, a cavity, a lower die, a connecting rod, a supporting column and a bottom plate. The pressing head is connected with the upper pressing plate; the cavity is arranged between the pressure head and the lower die, is respectively connected with the pressure head and the lower die through the connecting rod, and is connected with the bottom plate through the supporting column; the bottom plate is connected with the base. The production method specifically comprises the following steps: (1) putting materials into a cavity; (2) starting a host, and performing compression molding; and (3) ejecting out of the cavity. According to the method, the production efficiency and the quality stability can be effectively improved, the labor cost is reduced, enterprises are in favorable positions in competition, and at present, the method is stably operated in part of stopper manufacturing enterprises.

Description

Technical Field

[0001] The present invention relates to the technical field of refractory products for steelmaking, and more particularly to a production device and a production method for a gas permeable plug. Background Art

[0002] Continuous casting is the abbreviation of continuous steel casting. In the process of producing various steel products in steel mills, there are two methods to solidify molten steel: traditional mold casting and continuous steel casting. The continuous casting technology that appeared in Europe and the United States in the 1950s is an advanced technology that directly casts molten steel into shape.

[0003] Compared with traditional methods, continuous casting technology has significant advantages such as greatly improving metal recovery rate and ingot quality, saving energy, etc. The continuous casting process is to transport the ladle filled with refined molten steel to the turntable. After the turntable rotates to the pouring position, the molten steel is poured into the tundish, and the tundish distributes the molten steel to each crystallizer through the water nozzle. The crystallizer is one of the core equipment of the continuous casting machine, which forms the casting and quickly solidifies and crystallizes. The straightening machine and the crystallization vibration device work together to pull the casting out of the crystallizer, and after cooling and electromagnetic stirring, it is cut into slabs of a certain length. The stopper rod participates in this process and acts as a "valve".

[0004] The plug rod is generally made of a composite of different materials. According to the service environment and function, it can be divided into a rod head and a rod body, and the air plug is inside the rod head. The traditional production method of the air plug is to place the mold cavity on the base, add the material into the cavity, put the pressure head on it, and manually knock the pressure head with a hammer or other tools to form it. However, when using the traditional method to produce air plugs, due to manual knocking and molding, the number of products obtained each time is not large, and the body density and appearance size of the air plugs produced in different batches are different, which may cause quality fluctuations. In addition, the traditional production method requires manual removal of the finished air plug from the cavity for demolding, which is inefficient and has high labor costs.

[0005] Therefore, how to effectively improve the production efficiency and quality stability of the air permeable plug in the head of the integral plug rod for the continuous casting tundish and reduce labor costs is an urgent problem that technical personnel in this field need to solve. Summary of the invention

[0006] In view of this, the object of the present invention is to provide a production device and a production method for a vent plug to solve the deficiencies in the prior art.

[0007] In order to achieve the above object, the present invention adopts the following technical solution:

[0008] A production device for a vent plug, comprising a hydraulic press and a special mold;

[0009] The hydraulic press includes a main machine, an upper pressing plate and a base which are connected in sequence from top to bottom; a special mold is arranged between the upper pressing plate and the base;

[0010] The special mold includes a pressing head, a cavity, a lower mold, a connecting rod, a supporting column and a bottom plate; the pressing head is connected to the upper pressing plate; the cavity is arranged between the pressing head and the lower mold, the pressing head and the lower mold are connected by the connecting rod, and the cavity is connected to the bottom plate by the supporting column; the bottom plate is connected to the base.

[0011] In the present invention, the pressure head is connected to the upper platen of the hydraulic press and is used to press the material in the cavity into shape. The cavity is used to contain the material and determine the diameter size of the air-permeable plug. The lower mold is used to block the lower end of the cavity and play a role in demoulding. The connecting rod is used to connect the pressure head, the cavity and the lower mold. The support column is used to connect the cavity and the bottom plate. The bottom plate is used to connect the base of the hydraulic press.

[0012] Furthermore, the hydraulic press is a small four-column hydraulic press with a hydraulic capacity of more than 20 tons.

[0013] A further beneficial effect of adopting the above is that the small four-column hydraulic press is a mechanical equipment that uses the static pressure of hydraulic oil delivered by the oil pump to process metal, plastic, rubber, wood, powder and other products. The advantages are as follows: 1. Reduce weight and save materials; 2. Reduce the number of parts and molds, and reduce mold costs; 3. Reduce the amount of welding in subsequent mechanical processing and assembly; 4. Improve strength and stiffness, especially fatigue strength; 5. Reduce production costs.

[0014] A method for producing a vent plug, using the above-mentioned vent plug production equipment, specifically comprises the following steps:

[0015] (1) Place the material into the cavity;

[0016] (2) Start the main machine, use the upper pressing plate of the hydraulic press to drive the pressing head downward into the cavity, press the material in the cavity into shape, and complete the mass production of the finished vent plugs;

[0017] (3) When the upper pressing plate of the hydraulic press drives the pressing head to move upward and away from the cavity, the connecting rod on the pressing head drives the lower mold to move upward, pushing the finished vent plug out of the cavity, and completing the automatic demolding of the finished vent plug.

[0018] Furthermore, in the above step (2), during the pressing process, the stability of the body density and external dimensions of each batch of air permeable plugs is ensured by controlling the pressing distance of the hydraulic press.

[0019] It can be seen from the above technical solution that compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] The present invention creatively connects a special mold to a hydraulic press, and through the cooperation of the hydraulic press and the special mold, batches of finished products of air-permeable plugs in the rod heads of integral stopper rods for continuous casting tundishes with stable quality can be produced, which can effectively improve production efficiency and quality stability, reduce labor costs, and put the enterprise in a favorable position in the competition. At present, this method has been stably operated in some stopper rod manufacturing enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the structure of the vent plug production equipment of Example 1;

[0023] Figure 2 This is a schematic diagram of the structure of a special mold for the vent plug production equipment in Example 1;

[0024] Figure 3 This is a schematic diagram of the structure of a conventional production equipment for vent plugs in Comparative Example 1;

[0025] Figure 4 is the height of each batch of vent plugs in Example 2;

[0026] Figure 5 The height of the vent plugs of each batch in Comparative Example 2;

[0027] Figure 6 The body density of each batch of vent plugs in Example 2;

[0028] Figure 7 The body density of each batch of vent plugs in Comparative Example 2.

[0029] Among them, 1-hydraulic press, 2-special mold, 3-main machine, 4-upper pressure plate, 5-base, 6-pressure head, 7-cavity, 8-lower mold, 9-connecting rod, 10-support column, 11-bottom plate. DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] Example 1

[0036] Production equipment for vent plugs, such as Figure 1 As shown, it includes a small four-column hydraulic press 1 with a hydraulic capacity of more than 20 tons and a special mold 2;

[0037] The small four-column hydraulic press 1 includes a main machine 3, an upper pressing plate 4 and a base 5 which are connected in sequence from top to bottom; a special mold 2 is arranged between the upper pressing plate 4 and the base 5;

[0038] like Figure 2As shown, the special mold 2 includes a pressing head 6, a cavity 7, a lower mold 8, a connecting rod 9, a support column 10 and a bottom plate 11; the pressing head 6 is connected to the upper pressing plate 4; the cavity 7 is arranged between the pressing head 6 and the lower mold 8, and is respectively connected to the pressing head 6 and the lower mold 8 through the connecting rod 9, and is connected to the bottom plate 11 through the support column 10; the bottom plate 11 is connected to the base 5.

[0039] Example 2

[0040] The production method of the vent plug adopts the production equipment of the vent plug in Example 1, and specifically comprises the following steps:

[0041] (1) placing the material into the cavity 7;

[0042] (2) starting the main machine 3, using the upper pressing plate 4 of the small four-column hydraulic press 1 to drive the pressing head 6 to press downward into the cavity 7, pressing the material in the cavity 7 into shape, and completing the batch production of the finished vent plugs; during the pressing process, the pressing distance of the small four-column hydraulic press 1 is controlled to ensure the stability of the body density and appearance size of each batch of vent plugs;

[0043] (3) When the upper pressing plate 4 of the small four-column hydraulic press 1 drives the pressing head 6 to move upward and away from the cavity 7, the connecting rod 9 on the pressing head 6 drives the lower mold 8 to move upward, pushing the finished vent plug out of the cavity 7, and completing the automatic demolding of the finished vent plug.

[0044] Comparative Example 1

[0045] Traditional production equipment for vent plugs, such as Figure 3 As shown, from top to bottom it includes a pressing head 6, a cavity 7 and a base 5.

[0046] Comparative Example 2

[0047] The conventional production method of the vent plug adopts the conventional production equipment of the vent plug in Comparative Example 1, and specifically comprises the following steps:

[0048] (1) placing the material into the cavity 7;

[0049] (2) The mold cavity 7 is placed on the base 5, and the pressing head 6 is placed thereon. The pressing head 6 is manually struck with a hammer to press the material in the mold cavity 7 into shape.

[0050] Performance Testing

[0051] Using the same materials and mold cavities, 5 batches of vent plugs were produced according to the methods of Example 2 and Comparative Example 2. The height and body density of each batch of vent plugs were counted, and the results are shown in Tables 1 and Figure 4-7 shown.

[0052] Table 1 Height and body density of each batch of vent plugs in Example 2 and Comparative Example 2

[0053]

[0054] From Table 1 and Figure 4-7 It can be seen that compared with Comparative Example 2, the stability of the height and body density of each batch of air permeable plugs in Example 2 is significantly improved with almost no fluctuation.

[0055] The above experiments show that the present invention can effectively improve production efficiency and quality stability and reduce labor costs.

[0056] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0057] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A production equipment for vent plugs, characterized in that: Includes hydraulic presses and special molds; The hydraulic press comprises a main machine, an upper pressing plate and a base which are connected in sequence from top to bottom; the special mold is arranged between the upper pressing plate and the base; The special mold includes a pressing head, a cavity, a lower mold, a connecting rod, a support column and a bottom plate; the pressing head is connected to the upper pressing plate; the cavity is arranged between the pressing head and the lower mold, and the pressing head and the lower mold are respectively connected through the connecting rod, and are connected to the bottom plate through the support column; the bottom plate is connected to the base.

2. The production equipment of a vent plug according to claim 1, characterized in that: The hydraulic press is a small four-column hydraulic press with a hydraulic capacity of more than 20 tons.

3. A method for producing a vent plug, characterized in that: The production equipment of the vent plug according to claim 1 specifically comprises the following steps: (1) Place the material into the cavity; (2) Start the main machine, use the upper pressing plate of the hydraulic press to drive the pressing head downward into the cavity, press the material in the cavity into shape, and complete the mass production of the finished vent plugs; (3) When the upper pressing plate of the hydraulic press drives the pressing head to move upward and away from the cavity, the connecting rod on the pressing head drives the lower mold to move upward, pushing the finished vent plug out of the cavity, and completing the automatic demolding of the finished vent plug.

4. The method for producing a vent plug according to claim 3, characterized in that: In step (2), during the pressing process, the stability of the body density and external dimensions of each batch of vent plugs is ensured by controlling the pressing distance of the hydraulic press.

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