An insulation test block mold sand system

Abstract

The utility model provides a kind of heat-insulating agent test block test mould sand system, including pouring system and the symmetrical setting of being set to pouring system both sides a pair of injection liquid cavity;The bottom side of pouring system and injection liquid cavity is communicated;The injection liquid cavity is L type, and including at least one part vertical setting's clear riser cavity.The utility model discloses two injection liquid cavities symmetrical setting, and all from pouring system synchronous injection, the utility model provides a type two heat-insulating agent test block formation scheme, under the same sand mould, same pouring temperature, temperature effect comparison is done, the influence of different furnace steel liquid on heat-insulating agent heat-insulating effect is prevented, pouring temperature fluctuation is reduced to the influence on heat-insulating test result, the height H value of two heat-insulating agent test blocks is substantially same, reduce the influence on the safety height (h value) of V type shrinkage hole.

Description

Technical Field

[0001] This utility model belongs to the field of sand casting technology, and specifically relates to a sand mold system for testing thermal insulation agent test blocks. Background Technology

[0002] In the casting process, covering fluids (or insulating compounds) are key auxiliary materials used to cover the molten metal surface to reduce heat loss, prevent oxidation, adsorb impurities, and improve casting quality. Their main functions are as follows:

[0003] 1. Reduce heat loss: Form a heat insulation layer to slow down the cooling rate of molten metal (such as molten iron, molten steel, molten aluminum, etc.) and prevent premature solidification;

[0004] 2. Prevent oxidation: Isolate from air, reduce the contact between molten metal and oxygen, and reduce the formation of oxide slag;

[0005] 3. Adsorbing impurities: It gathers and adsorbs molten slag and non-metallic inclusions, facilitating subsequent slag removal;

[0006] 4. Improve fluidity: Maintain a stable temperature for the molten metal to ensure good fluidity during pouring and avoid defects such as cold shuts or incomplete pouring.

[0007] The traditional method for testing the insulation effect of thermal insulation agents is the T-block test method (also known as the shrinkage cavity method). This method involves using a mold with an inverted T-shaped riser for sand casting. After casting, the thermal insulation agent to be tested is covered on top of the riser. After the casting cools, the riser is cut open to observe the V-shaped shrinkage state of the riser cross-section. The safe height (h value) of the V-shaped shrinkage cavity is measured and the shrinkage cavity morphology is recorded. The larger the h value, the better the insulation effect of the thermal insulation agent (the solidification time of the molten metal is extended, and the feeding ability is enhanced). The shrinkage cavity morphology of a gentle V-shape is better than that of a sharp and deep hole.

[0008] To compare the insulation effects of two different insulating agents, at least two inverted T-shaped casting test blocks must be poured, and the risers of each block must be cut open for comparative evaluation. To avoid fluctuations in the composition / temperature of the molten steel, the same heat of molten steel should be used for pouring. However, the following factors still affect the comparative test evaluation:

[0009] 1. Traditional sand casting of inverted T-shaped castings is 1 casting per mold. Each T-shaped test block casting is independent. The pouring is done in sequence. The temperature of the molten steel in the same heat may drop in the later stage of pouring, resulting in different pouring temperatures for each sand mold test block.

[0010] 2. During pouring, it is impossible to precisely control the rise height of the liquid level in different sand molds, resulting in different riser heights (H) for each T-type test block casting, which affects the h value and ultimately the determination of the insulation effect of the insulating agent.

[0011] 3. The cutting position varies on different T-shaped test block castings, resulting in measurement error of the h value.

[0012] Against this background, the present invention proposes a new technical solution. Utility Model Content

[0013] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a sand mold system for testing thermal insulation agent test blocks, and the technical solution adopted is as follows:

[0014] A sand mold system for testing thermal insulation agent test blocks includes a gating system and a pair of injection cavities symmetrically arranged on both sides of the gating system; the gating system is connected to the bottom side of the injection cavities; the injection cavities are L-shaped and include at least a portion of vertically arranged open cap cavity.

[0015] According to an embodiment of the present invention, a test mold sand casting system for a thermal insulation agent test block is provided, wherein the injection cavity includes a horizontally arranged casting cavity and a vertically arranged open vent cavity.

[0016] According to an embodiment of the present invention, a sand mold system for testing thermal insulation agent test blocks is provided. The casting system includes a pouring cup and a sprue. Horizontal runners are symmetrically connected to both sides of the sprue, and the horizontal runners are connected to the side of the casting cavity.

[0017] According to an embodiment of the present invention, a sand mold system for testing thermal insulation agent test blocks is provided, wherein a pair of horizontal runners are respectively connected to the casting cavity through an inner runner.

[0018] According to an embodiment of the present invention, a test mold sand system for a thermal insulation agent test block is provided with a ceramic ring on the top outer ring of the open mouth cavity.

[0019] According to an embodiment of the present invention, a test mold sand mold system for thermal insulation agent test blocks is provided, wherein the injection chamber and the pouring system are constructed by upper and lower sand molds.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] In this invention, two injection chambers are symmetrically arranged and both are injected synchronously from the casting system. This invention provides a method for forming two thermal insulation agent test blocks of one type. Temperature effects are compared under the same sand mold and the same casting temperature. This eliminates the influence of molten steel from different furnaces on the thermal insulation effect of the thermal insulation agent and reduces the impact of casting temperature fluctuations on the thermal insulation test results. The riser height H value of the two thermal insulation agent test blocks is basically the same, reducing the impact on the safety height (h value) of the V-shaped shrinkage cavity. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic diagram of the structure of some embodiments of the present utility model. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the structure of some embodiments of the present utility model. Figure 2 .

[0025] Explanation of key component symbols:

[0026] 10. Casting cavity; 20. Exposed riser; 30. Pour cup; 40. Sprue; 50. Runner; 60. Ingate; 70. Ceramic ring; 80. Upper sand mold; 90. Lower sand mold. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0028] The orientation shown in the accompanying drawings should not be construed as limiting the specific protection scope of this utility model, but is only for reference and understanding of preferred embodiments. The product components shown in the drawings can be changed in position, increased in number, or simplified in structure.

[0029] The “connection” described in the specification and the “connection” relationship between the components shown in the accompanying drawings can be understood as a fixed connection, a detachable connection, or a connection that forms an integral unit; it can be a direct connection or a connection through an intermediate medium. Those skilled in the art can understand the connection relationship according to the specific circumstances and can derive different implementation methods such as screwing, riveting, welding, snap-fitting, or embedding to suitably replace the connection.

[0030] The directional terms such as up, down, left, right, top, and bottom mentioned in the instruction manual and the directions shown in the attached drawings indicate that the components can directly contact each other or contact each other through other features; for example, "up" can mean directly above or diagonally above, or it simply means above other objects; other directions can be understood by analogy.

[0031] The materials used to manufacture solid-shaped parts as shown in the specification and drawings may be metallic, non-metallic, or other synthetic materials. The machining processes used for solid-shaped parts may include stamping, forging, wire cutting, laser cutting, casting, injection molding, CNC milling, 3D printing, machining, etc. Those skilled in the art may adapt or combine the above materials and manufacturing processes according to different processing conditions, costs, and precision requirements.

[0032] This utility model provides a sand mold system for testing thermal insulation agent test blocks, such as... Figure 1 , 2 As shown, it includes a gating system and a pair of injection chambers symmetrically arranged on both sides of the gating system; the gating system is connected to the bottom side of the injection chambers; the injection chamber is L-shaped and includes at least a portion of a vertically arranged open cavity 20.

[0033] During use, the molten steel is poured to the upper edge of the pouring cup of the casting system and then stops. The molten steel enters the two injection chambers on both sides simultaneously from the bottom of the casting system. After filling the bottom of the injection chambers, it enters the vertically set open riser 20. Since the two injection chambers are symmetrically set and are injected synchronously from the casting system, the molten steel entering the two injection chambers belongs to the same furnace and has the same pouring temperature. The height in the open riser is the same. After pouring, two different heat-insulating agents are quantitatively sprinkled into the two open risers. After cooling and cutting the heat-insulating agent test block, the heat-insulating effect of the heat-insulating agent can be judged by observing the V-shaped shrinkage state of the riser cross-section. The heat-insulating effect of the new heat-insulating agent can also be tested by sprinkling a reference heat-insulating agent on one side and a new heat-insulating agent on the other side.

[0034] This utility model provides a method for forming two thermal insulation agent test blocks of one type. The temperature effect is compared under the same sand mold and the same pouring temperature. This eliminates the influence of molten steel from different furnaces on the thermal insulation effect of the thermal insulation agent, reduces the influence of pouring temperature fluctuations on the thermal insulation test results, and the riser height H value of the two thermal insulation agent test blocks is basically the same, reducing the influence on the safety height (h value) of the V-shaped shrinkage cavity.

[0035] In some embodiments of this utility model, such as Figure 1 As shown, the L-shaped injection cavity includes a horizontally arranged casting cavity 10 and a vertically arranged exposed riser cavity 20. Using an "L-shaped" insulation agent test block can avoid interference from pouring temperature fluctuations, stabilize the riser height H value, and thus improve the reliability and scientific rigor of the insulation agent insulation effect test.

[0036] In some embodiments of this utility model, such as Figure 1 , 2 As shown, the gating system includes a pouring cup 30 and a sprue 40. Horizontal runners 50 are symmetrically connected to both sides of the sprue 40, and the horizontal runners 50 are connected to the sides of the casting cavity 10. The pair of horizontal runners 50 are respectively connected to the casting cavity 10 via ingates 60.

[0037] In some embodiments of this utility model, such as Figure 1As shown, a ceramic ring 70 is provided on the top outer ring of the open cavity 20. The height of the ceramic ring 70 at the open cavity 20 of the symmetrical injection chambers on both sides is set to be the same. The height of the ceramic ring 70 is limited and consistent, which limits the amount of heat preservation agent to be dispersed and avoids the influence of different amounts on the test results.

[0038] In some embodiments of this utility model, such as Figure 1 As shown, the injection chamber and the casting system are constructed by upper sand mold 80 and lower sand mold 90.

[0039] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that various changes or modifications can be made to the present invention without departing from the principles and spirit of the present invention as defined by the claims. Therefore, the detailed description of the embodiments in this disclosure is for explanation only and not for limiting the present invention, but rather the scope of protection is defined by the content of the claims.

Claims

1. A sand mold system for testing thermal insulation agent test blocks, characterized in that, It includes a gating system and a pair of injection chambers symmetrically arranged on both sides of the gating system; the gating system is connected to the bottom side of the injection chambers; the injection chambers are L-shaped and include at least a portion of vertically arranged open vents (20).

2. The sand mold system for testing thermal insulation agent test blocks according to claim 1, characterized in that, The injection cavity includes a horizontally arranged casting cavity (10) and a vertically arranged open cap cavity (20).

3. The sand mold system for testing thermal insulation agent test blocks according to claim 2, characterized in that, The gating system includes a pouring cup (30) and a sprue (40). A gating system (50) is symmetrically connected to both sides of the sprue (40). The gating system (50) is connected to the side of the casting cavity (10).

4. The sand mold system for testing thermal insulation agent test blocks according to claim 3, characterized in that, The pair of horizontal runners (50) are connected to the casting cavity (10) through the ingate (60).

5. The sand mold system for testing thermal insulation agent test blocks according to claim 2, characterized in that, A ceramic ring (70) is provided on the top outer ring of the oral cavity (20).

6. The sand mold system for testing thermal insulation agent test blocks according to claim 1, characterized in that, The injection chamber and the pouring system are constructed by an upper sand mold (80) and a lower sand mold (90) on top of each other.

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