阅读说明：本技术 便于热挤压铝棒与挤压杆分离的方法及其装置 (Method and device for separating hot-extruded aluminum bar from extrusion rod conveniently ) 是由 李德松 浦俭英 李其荣 于 2019-10-24 设计创作，主要内容包括：本发明涉及一种便于热挤压铝棒与挤压杆分离的方法及其装置,该便于热挤压铝棒与挤压杆分离的方法包括以下步骤：于铝棒的一端面涂覆炭黑；以及将铝棒的一端面与挤压杆接触,热挤压铝棒。该便于热挤压铝棒与挤压杆分离的装置包括：乙炔喷出机构,用于朝铝棒喷射乙炔；以及点火机构,用于点燃乙炔。本发明所采用的原料为乙炔,其不完全燃烧所产生的产物是碳黑和氢气,不会造成棒料表面和现场环境污染,并通过碳黑与挤压杆接触,防止在挤压过程中高温状态的铝棒与挤压杆接触发生粘铝,有利于挤压完成后铝棒与挤压杆的分离,且碳黑较现有技术中所采用的氯化钠溶液具有更好的润滑效果,可以减少铝棒与挤压杆之间的摩擦,有利于挤压过程中金属的流动。(The invention relates to a method and a device for conveniently separating a hot-extruded aluminum bar from an extrusion rod, wherein the method for conveniently separating the hot-extruded aluminum bar from the extrusion rod comprises the following steps: coating carbon black on one end face of the aluminum bar; and contacting one end face of the aluminum bar with the extrusion rod, and carrying out hot extrusion on the aluminum bar. This device convenient to hot extrusion aluminium bar and extrusion stem separation includes: the acetylene spraying mechanism is used for spraying acetylene to the aluminum bar; and an ignition mechanism for igniting the acetylene. The raw material adopted by the invention is acetylene, the products generated by incomplete combustion of the acetylene are carbon black and hydrogen, the surface of the bar and the field environment pollution can not be caused, aluminum sticking caused by the contact of the aluminum bar in a high-temperature state and the extrusion rod in the extrusion process is prevented through the contact of the carbon black and the extrusion rod, the separation of the aluminum bar and the extrusion rod after the extrusion is finished is facilitated, the carbon black has a better lubricating effect compared with a sodium chloride solution adopted in the prior art, the friction between the aluminum bar and the extrusion rod can be reduced, and the metal flowing in the extrusion process is facilitated.)

1. A method for facilitating the separation of a hot-extruded aluminum bar from an extrusion stem, characterized in that the method for facilitating the separation of a hot-extruded aluminum bar from an extrusion stem comprises the steps of:

coating carbon black on one end face of the aluminum bar; and

and contacting the end face of the aluminum bar with an extrusion rod, and carrying out hot extrusion on the aluminum bar.

2. The method of facilitating the separation of a hot-extruded aluminum bar from an extrusion stem of claim 1 wherein said step of applying said carbon black to said one end surface of said aluminum bar further comprises the steps of:

spraying acetylene towards the one end face of the aluminum bar; and

igniting the acetylene to enable the acetylene to be incompletely combusted, generating carbon and hydrogen, and enabling the carbon to be attached to the end face in the form of carbon black.

3. The method of facilitating separation of a hot-extruded aluminum bar from an extrusion stem of claim 2, wherein said injecting said acetylene is performed by injecting said acetylene in a direction toward an axial center of said aluminum bar so as to spread all around along said one end surface of said aluminum bar.

4. The utility model provides a device convenient to hot extrusion aluminium bar separates with the extrusion stem which characterized in that, the device convenient to hot extrusion aluminium bar separates with the extrusion stem includes:

the acetylene spraying mechanism is used for spraying acetylene to the aluminum bar; and

an ignition mechanism for igniting the acetylene;

when the device convenient for hot extrusion aluminium bar and extrusion stem separation is applied to when the extrusion of aluminium bar and extrusion stem, acetylene ejection mechanism court the terminal surface injection acetylene of aluminium bar, ignition mechanism ignites the acetylene makes the acetylene incomplete combustion produces carbon and hydrogen, just carbon with the form of carbon black attached to a terminal surface, the aluminium bar a terminal surface and extrusion stem contact, hot extrusion the aluminium bar.

5. The apparatus for facilitating the separation of a hot extruded aluminum bar from an extrusion stem of claim 4 wherein the acetylene blowout mechanism comprises:

the gas cylinder is provided with an acetylene nozzle, the acetylene is stored in the gas cylinder, and the acetylene can be sprayed out through the acetylene nozzle; and

and the anti-blocking unit is arranged on the acetylene nozzle and used for preventing flame from entering the gas cylinder.

6. The apparatus for facilitating the separation of a hot-extruded aluminum bar from an extrusion stem of claim 5, wherein the anti-clogging element is a metal member having a plurality of micro-holes.

Technical Field

The invention belongs to the technical field of aluminum alloy extrusion, and particularly relates to a method and a device for conveniently separating a hot-extruded aluminum bar from an extrusion rod.

Background

Hot extrusion is one of the main forming methods of aluminum alloy, and the aluminum alloy manufactured by using the hot extrusion method is widely applied to the fields of aerospace, automobiles, buildings and the like, and a heated aluminum alloy bar is generally extruded by using an extrusion rod through a die in the hot extrusion aluminum alloy forming process to obtain a required shape.

Because the heated aluminum alloy has better plasticity, in order to prevent the aluminum alloy bar from being stuck on the extrusion rod, the prior art generally adopts the mode that a sodium chloride solution is sprayed or a boron nitride solution is coated on one side of the bar, which is contacted with the extrusion rod, so that the extrusion rod and the bar are smoothly separated after the extrusion is finished.

In the process of implementing the invention, the inventor finds that the prior art has at least the following problems:

when the sodium chloride solution or the boron nitride solution is sprayed on one side of the bar stock, which is in contact with the extrusion rod, the solution is not uniformly coated frequently, and the surface of the bar stock and the field environment are easily polluted by the solution coating.

Disclosure of Invention

In order to solve the technical problems in the prior art, the embodiment of the invention provides a method and a device for separating a hot-extrusion aluminum bar from an extrusion rod conveniently. The specific technical scheme is as follows:

in a first aspect, a method for facilitating the separation of a hot extruded aluminum bar from an extrusion stem is provided, wherein the method for facilitating the separation of a hot extruded aluminum bar from an extrusion stem comprises the steps of:

coating carbon black on one end face of the aluminum bar; and

one end face of the aluminum bar is contacted with the extrusion rod, and the aluminum bar is hot extruded.

In a first possible implementation manner of the first aspect, the method for coating carbon black on one end face of the aluminum bar further includes the following steps:

spraying acetylene to one end face of the aluminum bar; and

the acetylene is ignited and is not completely combusted to produce carbon and hydrogen, and the carbon is attached to one end face in the form of carbon black.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, when the acetylene is sprayed, the acetylene is sprayed in a direction aligned with an axial center of the aluminum bar so as to diffuse around along one end surface of the aluminum bar.

In a second aspect, there is provided a device for facilitating the separation of a hot-extruded aluminum bar from an extrusion stem, wherein the device for facilitating the separation of a hot-extruded aluminum bar from an extrusion stem comprises:

the acetylene spraying mechanism is used for spraying acetylene to the aluminum bar; and

an ignition mechanism for igniting the acetylene;

wherein, when the device of the hot extrusion aluminium bar of being convenient for and the extrusion stem separation is applied to the extrusion of aluminium bar and extrusion stem, acetylene is spouted towards the terminal surface of aluminium bar to acetylene is spun to the acetylene, and ignition mechanism ignites acetylene, makes acetylene incomplete combustion, produces carbon and hydrogen, and carbon is attached to a terminal surface with the form of carbon black, and a terminal surface and the extrusion stem contact of aluminium bar hot extrusion aluminium bar.

In a first possible implementation manner of the second aspect, the acetylene ejection mechanism includes:

the gas cylinder is provided with an acetylene nozzle, acetylene is stored in the gas cylinder, and the acetylene can be sprayed out through the acetylene nozzle;

and

and the anti-blocking unit is arranged on the acetylene nozzle and is used for preventing flame from flowing into the gas cylinder.

With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the anti-blocking unit is a metal piece with a plurality of micro holes.

Compared with the prior art, the invention has the advantages that:

the raw material adopted by the invention is acetylene, the products generated by incomplete combustion of the acetylene are carbon black and hydrogen, the surface of the bar and the field environment pollution can not be caused, aluminum sticking caused by the contact of the aluminum bar in a high-temperature state and the extrusion rod in the extrusion process is prevented through the contact of the carbon black and the extrusion rod, the separation of the aluminum bar and the extrusion rod after the extrusion is finished is facilitated, the carbon black has a better lubricating effect compared with a sodium chloride solution adopted in the prior art, the friction between the aluminum bar and the extrusion rod can be reduced, and the metal flowing in the extrusion process is facilitated.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a flow chart illustrating the steps of a method for facilitating the separation of a hot extruded aluminum bar from an extrusion rod in accordance with one embodiment of the present invention.

FIG. 2 is a flow chart illustrating the steps of a method for applying carbon black to an end face of an aluminum rod according to an embodiment of the present invention.

FIG. 3 is a schematic structural diagram of an apparatus for facilitating separation of a hot-extruded aluminum bar from an extrusion rod according to one or two embodiments of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In one embodiment of the present invention, please refer to fig. 1, which illustrates a schematic flow chart of steps of a method 1 for facilitating separation of a hot-extruded aluminum bar from an extrusion rod according to one embodiment of the present invention. The method 1 for facilitating the separation of the hot-extruded aluminum bar from the extrusion rod comprises the following steps 101-:

step 101, coating carbon black. One end face 31 of the aluminum bar 3 is coated with carbon black.

In a preferred embodiment, please refer to fig. 2, which shows a flow chart of the steps of a method 4 for coating carbon black on one end surface of an aluminum bar according to an embodiment of the present invention. The method 6 for coating carbon black on one end surface of the aluminum bar further comprises the following steps 401 and 402, wherein:

in step 401, acetylene is injected. Acetylene is sprayed toward one end face 31 of the aluminum bar 3.

Specifically, please refer to fig. 3, which illustrates a schematic structural diagram of an apparatus 2 for separating a hot-extruded aluminum bar from an extrusion rod according to an embodiment of the present invention. Acetylene is jetted toward one end surface 31 of the aluminum bar 3 by the acetylene jetting mechanism 21. Preferably, the acetylene is sprayed in the direction of the axis of the aluminum rod 3 so as to be diffused all around along one end surface 31 of the aluminum rod 3, thereby obtaining a uniform coating, and the acetylene is sprayed at a high speed so that the acetylene is not completely combusted to generate carbon when being ignited subsequently, but the invention is not limited thereto.

At step 402, acetylene is ignited. The acetylene is ignited and is not completely combusted to produce carbon and hydrogen, and the carbon adheres to one end face 31 in the form of carbon black.

Specifically, referring again to fig. 3, the ignition mechanism 22 ignites the acetylene so that the acetylene is not completely combusted to generate carbon and hydrogen, and the carbon is attached to one end surface 31 in the form of carbon black. Preferably, the acetylene is ignited at a position close to the end face 31 of the aluminum bar 3 to facilitate the adhesion of carbon generated by incomplete combustion of acetylene to the end face 31 of the aluminum bar 3, but not limited thereto.

And 102, extruding the aluminum bar 3. One end face 31 of the aluminum bar 3 is brought into contact with the extrusion rod, and the aluminum bar 3 is hot-extruded.

Specifically, the aluminum bar 3 is placed in the extruder, one end surface 31 of the aluminum bar is in contact with the extrusion rod, the extrusion rod thermally extrudes the aluminum bar 3 by extruding the end surface 31, the aluminum bar 3 in a high-temperature state in the extrusion process can be prevented from being contacted with the extrusion rod to cause aluminum adhesion, and the separation of the aluminum bar 3 and the extrusion rod after the extrusion is completed is facilitated.

The raw materials that method 1 adopted of the hot extrusion aluminium bar of being convenient for of this embodiment and the separation of extrusion stem adopt are acetylene, its produced product of incomplete combustion is carbon black and hydrogen, can not cause bar surface and site environment pollution, and contact through carbon black and extrusion stem, prevent that aluminium bar 3 and the extrusion stem contact of high temperature state take place to glue aluminium in extrusion process, be favorable to the separation of extrusion completion back aluminium bar 3 and extrusion stem, and the sodium chloride solution that adopts among the carbon black than the prior art has better lubricated effect, can reduce the friction between aluminium bar 3 and the extrusion stem, be favorable to the flow of extrusion in-process metal.

Referring to fig. 3, a schematic flow chart of steps of the apparatus 2 for separating a hot-extruded aluminum bar from an extrusion rod according to the second embodiment of the present invention is shown. The device 2 for facilitating the separation of the hot extruded aluminum bar from the extrusion stem comprises an acetylene blowing mechanism 21 and an ignition mechanism 22, wherein:

the acetylene spouting mechanism 21 is for spouting acetylene toward the aluminum rod 3. The acetylene gas spraying mechanism 21 disclosed in this embodiment includes a gas cylinder 211 and a resistance unit 212, the gas cylinder 211 has an acetylene nozzle 213, acetylene is stored in the gas cylinder 211, the acetylene can be sprayed out through the acetylene nozzle 213, the resistance unit 212 is disposed on the acetylene nozzle 213, the resistance unit 212 is preferably a metal member with a plurality of micropores, and the resistance unit 212 is used to prevent flame from entering the gas cylinder 211, but not limited thereto.

The ignition mechanism 22 is used to ignite acetylene to completely combust the acetylene to produce carbon and hydrogen, and there may be no particular requirement for the choice of construction of the ignition mechanism 22 in this embodiment, as is conventional to those skilled in the art.

When the device 2 for facilitating the separation of the hot-extruded aluminum bar from the extrusion stem disclosed in the present embodiment is applied to the extrusion of the aluminum bar 3 from the extrusion stem, the acetylene spraying mechanism 21 sprays acetylene toward one end surface 31 of the aluminum bar 3. Preferably, the acetylene is sprayed in the direction of the axis of the aluminum rod 3 so as to be diffused all around along one end surface 31 of the aluminum rod 3, thereby obtaining a uniform coating, and the acetylene spraying speed is high so that the acetylene can be incompletely combusted to generate carbon when being ignited subsequently, but not limited thereto.

The fire mechanism 4 ignites the acetylene to cause incomplete combustion of the acetylene to generate carbon and hydrogen, and the carbon is attached to one end surface 31 in the form of carbon black, preferably, the position of igniting the acetylene is close to the position of one end surface 31 of the aluminum bar 3 to facilitate the attachment of the carbon generated by incomplete combustion of the acetylene to one end surface 31 of the aluminum bar 3, but not limited thereto. Then place aluminium bar 3 in the extruder, and make its one end face 31 and the contact of stripper bar, the stripper bar is through this end face 31 of extrusion and hot extrusion aluminium bar 3, can prevent that aluminium bar 3 and the stripper bar contact of high temperature state from taking place to glue aluminium in extrusion process, be favorable to the separation of extrusion completion back aluminium bar 3 and stripper bar, and the carbon black has better lubricated effect than the sodium chloride solution that adopts among the prior art, can reduce the friction between aluminium bar 3 and the stripper bar, be favorable to the flow of extrusion in-process metal.

The foregoing description shows and describes several preferred embodiments of the invention, but as aforementioned, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.