CN213932030U - Liquid copper alloy smelting device for ensuring die-casting effect - Google Patents

Abstract

The utility model discloses a device is smelted to liquid copper alloy for ensureing die-casting effect, including the pot that melts that is used for placing solid-state copper alloy for the solid-state copper alloy in the pot is smelted into the high temperature heating device of liquid copper alloy to the heating, and is used for in-process to the pot that melts the pot heating solid-state copper alloy gas transmission, so that the submerged copper alloy material in its bottom upwards rolls the gas transmission device that realizes different density material intensive mixing and heating. The utility model discloses a reasonable structural design under the prerequisite that does not use special materials preparation stirring instrument, through the mode of ventilating in to the melting pot at the in-process that solid-state copper alloy smelted, fully realized the material in the melting pot and mixed, made solid-state copper alloy by abundant heating melting in the melting pot to improve the effect of follow-up die-casting, ensured the quality of product. The utility model discloses the solid alloy that is particularly useful in the aspect of metal product, especially copper alloy goods die-casting preparation is smelted.

Description

Liquid copper alloy smelting device for ensuring die-casting effect

Technical Field

The utility model relates to a metal product processing technology field, concretely relates to a device is smelted to liquid copper alloy for ensureing die-casting effect.

Background

The copper alloy die-casting product is a metal product which is quickly stamped and cast, and is die-cast by using a pressure casting machine provided with a casting die. In the process steps of die casting the copper alloy, the first step is to smelt the copper alloy into liquid; and secondly, injecting the liquid copper alloy into a feeding port of a die casting machine, and casting a metal casting product with the shape and the size limited by the die by stamping the liquid copper alloy by the die casting machine.

Because the copper alloy material is generally formed by mixing a plurality of materials, the densities of different materials are different, the situations that a high-density material sinks and a low-density material floats at the upper end easily occur in the smelting process, and if the solid copper alloy is not fully melted, the subsequent die-casting effect is influenced, so that the product quality problem is caused.

However, the existing technical means for solving the above-mentioned problem of mixing copper alloy materials are basically stirring, which is used to fully mix the sinking material with the upper material to ensure the full mixing and heating of copper alloy.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a device is smelted to liquid copper alloy for ensureing die-casting effect, it has the stirring tool cost of manufacture higher and is difficult to guarantee the problem of material intensive mixing mainly to solve prior art.

In order to achieve the above object, the utility model adopts the following technical scheme:

a liquid copper alloy smelting device for ensuring a die-casting effect comprises a smelting pot for placing solid copper alloy, a high-temperature heating device for heating the smelting pot to smelt the solid copper alloy into the liquid copper alloy, and a gas transmission device for transmitting gas into the smelting pot in the process of heating the solid copper alloy by the smelting pot so as to enable materials sinking at the bottom of the smelting pot to roll upwards to realize sufficient mixing and heating of the materials with different densities.

Specifically, the gas transmission device comprises a gas transmission pipe communicated with the melting pot, a valve arranged on the gas transmission pipe, and a gas cylinder connected with the gas transmission pipe.

Furthermore, a pipe body is arranged at the bottom of the melting pot, and the melting pot is connected with the gas transmission device through the connection of the pipe body and the gas transmission pipe.

Still further, the utility model discloses still include be connected, be used for supporting the furnace of melting pot with the melting pot.

Preferably, the crucible is made of graphite.

Preferably, the tube body is made of ceramic or graphite.

Furthermore, the gas pipe is composed of a ceramic pipe inner layer, a heat insulation cotton heat insulation layer and a graphite pipe outer layer, wherein the heat insulation cotton heat insulation layer is located between the ceramic pipe inner layer and the graphite pipe outer layer.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the utility model discloses a set up gas transmission device, to letting in gas bottom in the pot when melting pot heating is smelted solid-state copper alloy, utilize gaseous ascending drive pot bottom sunken material in upwards constantly roll to realize different density material intensive mixing and heating. The utility model discloses do not use the stirring tool of special material preparation, but adopt the mode of ventilating in succession to the melting pot to realize the mixture of different density materials, this kind of mode that utilizes the characteristic that gas rises to realize the material and mix has simple structure, low cost's advantage, has effectively solved the problem that prior art exists.

(2) The utility model discloses in the smelting process, because furnace bottom temperature is about 1600 degrees centigrade, and melt the interior solution temperature of pot and control at 1150 degrees centigrade, even high temperature resistant ceramic pipe also is difficult to keep long-time work, consequently, the utility model provides a gas-supply pipe comprises ceramic pipe inlayer, the cotton insulating layer of heat preservation and graphite pipe skin, can effectively reduce heat conduction through the cotton that keeps warm, ensures that the gas-supply pipe normally works.

Drawings

Fig. 1 is a schematic view of the structure of the device of the present invention.

Fig. 2 is a schematic structural view of the middle gas pipe of the present invention.

Wherein, the part names corresponding to the reference numbers are:

1-melting pot, 2-heating device, 3-gas pipe, 31-ceramic pipe inner layer, 32-heat insulation cotton heat insulation layer, 33-graphite pipe outer layer, 4-gas cylinder and 5-hearth.

Detailed Description

The present invention will be further described with reference to the following description and examples, which include but are not limited to the following examples.

Examples

The utility model aims to provide a can make solid-state copper alloy fully melt to ensure the technical scheme of follow-up die-casting effect and product quality. Structurally, realize the utility model discloses technical scheme's device design is shown in fig. 1, and it includes the melting pot 1 (preferably adopt graphite to make) that is used for placing solid-state copper alloy, is used for heating the heating device 2 that the melting pot so that solid-state copper alloy in it smelts into liquid copper alloy to and gas transmission device and furnace 5.

The gas transmission device is used for transmitting gas into the melting pot in the process of heating the solid copper alloy in the melting pot so as to enable the copper alloy material with the sunken bottom to roll upwards to realize the sufficient mixing and heating of different density materials, and specifically, the gas transmission device comprises a gas transmission pipe 3 communicated with the melting pot 1 through a pipe body (the pipe body is preferably made of ceramic or graphite), a valve arranged on the gas transmission pipe, and a gas cylinder 4 connected with the gas transmission pipe.

And the hearth 5 is connected with the melting pot 1 and is used for supporting the melting pot.

Introduce below the utility model discloses complete die-casting flow, it includes following step:

in the first step, the first step is that,

the solid copper alloy is put into a melting pot, and after the copper alloy reaches the melting point, liquid copper can generate oxidation reaction with oxygen in the air to cause oxidation and volatilization of the copper alloy, so that after the solid copper alloy is put into the melting pot, a layer of charcoal needs to be covered on the surface of the copper alloy to avoid the oxidation and volatilization of the copper alloy in the smelting process.

In the second step, the first step is that,

and starting the heating device to heat the melting pot so as to heat and melt the solid copper alloy in the melting pot to form liquid copper alloy. Because the copper alloy material is formed by mixing a plurality of materials, part of solid materials are not completely melted, and the materials sink to the bottom of the melting pot due to different densities, at the moment, the gas transmission device is started, gas (inert gases such as nitrogen, carbon dioxide and the like) is introduced into the melting pot, and the rising of the gas drives the materials sinking at the bottom of the melting pot to roll upwards continuously, so that the materials with different densities in the melting pot are fully mixed and heated. This operation is continued to be cycled until the solid copper alloy is finally completely converted into the liquid copper alloy.

In the third step, the first step is,

and (3) putting the smelted liquid copper alloy into an injection pipeline of a die casting machine, and pushing the liquid copper alloy into a die by using a push rod of the die casting machine, so that the die casting of the copper alloy product can be completed as the conventional die casting operation. In the process of pushing and pressing the liquid copper alloy, the melting point of the copper alloy is 1083 degrees, and compared with other metals, the copper alloy has the characteristics of high melting point and easiness in oxidation, and the temperature difference change after smelting is large, so that the die-cast copper alloy product has defects, such as sand holes on the surface and the like, and therefore a constant temperature device can be arranged in an injection pipeline of a die-casting machine, the temperature reduction of the copper alloy caused by the overlarge temperature difference change is prevented, and the quality of the product is further ensured.

In addition, in the smelting process, because furnace bottom temperature is about 1600 degrees centigrade, and the interior solution temperature of melting pot is about 1150 degrees centigrade, even the ceramic pipe of high temperature resistance also is difficult to keep long-time work, consequently, the utility model discloses in, gas-supply pipe 3 comprises ceramic pipe inlayer 31, heat preservation cotton insulating layer 32 and graphite pipe skin 33, as shown in fig. 2. By the design, heat conduction can be effectively reduced through the heat insulation cotton, so that normal work of the gas pipe is guaranteed.

The utility model discloses a reasonable structural design under the prerequisite that does not use special materials preparation stirring instrument, through the mode of ventilating in to the melting pot at the in-process that solid-state copper alloy smelted, fully realized the material in the melting pot and mixed, made solid-state copper alloy by abundant heating melting in the melting pot to improve the effect of follow-up die-casting, ensured the quality of product. The utility model discloses the solid alloy that is particularly useful in the aspect of metal product, especially copper alloy goods die-casting preparation is smelted.

The above embodiment is only one of the preferred embodiments of the present invention, and should not be used to limit the protection scope of the present invention, but all the insubstantial changes or modifications made in the spirit and the idea of the main design of the present invention, the technical problems solved by the embodiment are still consistent with the present invention, and all should be included in the protection scope of the present invention.

Claims (7)

1. The liquid copper alloy smelting device for ensuring the die-casting effect comprises a smelting pot (1) for placing solid copper alloy, and a high-temperature heating device (2) for heating the smelting pot to smelt the solid copper alloy into the liquid copper alloy, and is characterized by further comprising a gas transmission device for transmitting gas into the smelting pot in the process of heating the solid copper alloy by the smelting pot so as to enable materials sinking at the bottom of the smelting pot to roll upwards to realize the sufficient mixing and heating of the materials with different densities.

2. The liquid copper alloy smelting device for ensuring the die-casting effect according to claim 1, wherein the gas transmission device comprises a gas transmission pipe (3) communicated with the melting pot (1), a valve arranged on the gas transmission pipe, and a gas cylinder (4) connected with the gas transmission pipe.

3. The liquid copper alloy smelting device for ensuring the die-casting effect according to claim 2, wherein a pipe body is arranged at the bottom of the smelting pot (1), and the smelting pot is connected with the gas conveying device through the connection of the pipe body and the gas conveying pipe.

4. A liquid copper alloy smelting unit for ensuring die casting effect according to any one of claims 1 to 3, further comprising a hearth (5) connected to the crucible (1) for supporting the crucible.

5. A liquid copper alloy smelting apparatus for ensuring die casting effect according to claim 1, characterized in that the crucible (1) is made of graphite.

6. A liquid copper alloy smelting apparatus for ensuring die casting effectiveness according to claim 3, wherein said pipe body is made of ceramic or graphite.

7. The liquid copper alloy smelting device for ensuring the die-casting effect according to claim 2, wherein the gas pipe (3) is composed of a ceramic pipe inner layer (31), a thermal insulation cotton layer (32) and a graphite pipe outer layer (33), and the thermal insulation cotton layer is located between the ceramic pipe inner layer and the graphite pipe outer layer.

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