WO2011031021A2 - Heat treatment method for aluminium hot forging - Google Patents

Heat treatment method for aluminium hot forging Download PDF

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Publication number
WO2011031021A2
WO2011031021A2 PCT/KR2010/005689 KR2010005689W WO2011031021A2 WO 2011031021 A2 WO2011031021 A2 WO 2011031021A2 KR 2010005689 W KR2010005689 W KR 2010005689W WO 2011031021 A2 WO2011031021 A2 WO 2011031021A2
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temperature
hot forging
forging
heat treatment
solution
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PCT/KR2010/005689
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French (fr)
Korean (ko)
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WO2011031021A3 (en
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임성곤
강신우
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주식회사 센트랄
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon

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  • the present invention relates to a heat treatment method of aluminum hot forging, and more particularly to a heat treatment method of aluminum hot forging for reducing the energy used in the hot forging process.
  • the technique of heating aluminum to forge a specific product shape by forging includes processes of heating, hot forging, trimming, air cooling, solution treatment, water cooling, and aging treatment, as is known.
  • Precipitation hardening is a method of forming a precipitate inside a crystal to improve the physical properties of the material.
  • the material In order to form a precipitate inside the aluminum alloy, the material is first heated to a uniform solid solution and then quenched so that the second phase cannot be precipitated, resulting in an unstable single phase in which supersaturated solute atoms are dissolved. This treatment is called solution treatment. Heating the unstable supersaturated phase to an appropriate temperature starts precipitation and returns to a stable state.
  • Precipitation is a phenomenon in which the solute atoms infiltrated into the mother phase due to the change of solubility by temperature come out of the crystal of the mother phase and become different from the crystal structure of the mother phase. Since precipitation requires time for atom diffusion, precipitation hardening is also called age hardening, and hardening occurs as precipitation progresses with time.
  • the precipitation hardening-type aluminum alloy requires a solution treatment, which will be described in detail with reference to the accompanying drawings.
  • FIG. 1 is a process flowchart of a conventional heat treatment method of aluminum hot forging
  • Figure 2 is a process graph describing the temperature and time for each process step of FIG.
  • the material is first heated to 500 to 550 ° C. as in step S11, and hot forging is performed as in steps S12 and S13, and then a trimming process is performed. Proceed to manufacture the forging.
  • the total time for performing hot forging and trimming is about 30 seconds, and the hot forging and trimmed material are in a high heated state.
  • step S14 the hot forging and trimmed forgings are subjected to an air cooling and loading process for cooling in air.
  • step S16 the forged product is cooled again to prepare the solution for solution treatment.
  • the final target temperature of the elevated temperature is 530 ° C, which is the solution treatment temperature, and the forged product is heated for 1.5 to 2.5 hours to raise the temperature to reach the final target temperature.
  • the solution is subjected to a solution treatment at 530 ° C., which is the final temperature rise temperature as in step S17.
  • the solution treatment proceeds for about 4 hours and, as described above, creates a uniform solid solution by solution treatment.
  • step S18 to perform a water-cooling process for water-cooled the solution-ized forged product to produce a supersaturated solid solution
  • step S19 it is aged by maintaining the cooled forged product at 170 °C for 4 to 7 hours.
  • the conventional heat treatment method of aluminum hot forging uses a process of heating a hot material for hot forging, cooling the hot forging and trimmed forgings, and then heating the solution for solution treatment.
  • the process of air-cooling and reheating takes a lot of time, and the energy consumption is relatively high because the cooled forging has to be reheated.
  • the problem to be solved by the present invention in consideration of the above problems is to provide a heat treatment method of aluminum hot forging that can shorten the process time, can reduce the amount of energy used.
  • the heat treatment method of the aluminum hot forging according to the present invention for solving the above problems, a) forging and trimming the heated material to produce a forging, and b) solution treatment can be performed in the state that the latent heat of the forging is left Heating to a temperature; c) subjecting the heated forged product to a solution; and d) water-cooling and aging the solution forged product.
  • the temperature of the forged product is raised to the solution treatment temperature without air cooling, thereby shortening the time required for the temperature increase to the solution treatment temperature after air cooling to improve productivity. It is effective to let.
  • the heat treatment method of the aluminum hot forging of the present invention has the effect of reducing the energy supplied by performing the solution treatment by using the heat of the forged product to reduce the manufacturing cost, and lower the unit cost of the forged product.
  • 1 is a process flowchart of a heat treatment method of a conventional aluminum hot forging.
  • FIG. 2 is a process graph describing temperature and time for each process step of FIG. 1.
  • FIG. 3 is a flowchart of an aluminum forging process according to a preferred embodiment of the present invention.
  • FIG. 4 is a process graph describing temperature and time for each process step of FIG. 1.
  • Figure 3 is a flow chart of the aluminum forging process according to a preferred embodiment of the present invention
  • Figure 4 is a time and temperature graph of the aluminum forging process according to a preferred embodiment of the present invention.
  • the method for heat treatment of aluminum hot forging according to a preferred embodiment of the present invention, the step of heating the material (S31), and the step of hot forging the heated material to produce a forging (S32) ), Trimming the manufactured forged product (S33), heating the trimmed forged product to a solution treatment temperature (S34), and solution treatment for a predetermined time at the solution treatment temperature. It consists of a step (S35), the step of water cooling the solution-ized forged product (S36), and the step of aging the water-cooled forged product (S37).
  • step S31 is heated to 500 ⁇ 550 °C aluminum material for forging.
  • the heating temperature is one embodiment and is heated to a suitable temperature for hot forging the aluminum material.
  • step S32 the forged product is manufactured by hot forging the heated material in a mold, and in step S33, the forged product is trimmed.
  • the time required for hot forging and trimming is about 30 seconds, and as the time passes, the temperature of the forged product is cooled to a predetermined temperature at 500 to 550 ° C., which is a heating temperature of the material.
  • the cooled temperature may be a temperature range that can be solutionized or a temperature slightly lower than the solutionable solution, which may be changed depending on the external temperature or the conditions of the hot forging equipment.
  • step S34 the temperature of the trimmed forged product is raised to 530 ° C., which is the solutionable temperature.
  • the temperature increase process may be performed.
  • the temperature raising process may be omitted.
  • the trimmed forged product is cooled by air to 530 ° C., which is the solutionable temperature at room temperature, and thus, the time required for the elevated temperature is about 1.5 to 2.5 hours, and energy consumption is also relatively high.
  • the present invention improves productivity by shortening the process time, and it is possible to reduce the cost of the forging by reducing the cost.
  • step S35 the forged product, which is the solution temperature at which the temperature is elevated or not, is maintained at the solution temperature for 4 hours to perform solution solution.
  • the forged product trimmed in step S33 is transferred to a heat treatment furnace by a robot, and can simultaneously carry out the temperature increase of step S34 and the solution treatment of step S35 while passing through the conveyor of the heat treatment furnace, as will be described later.
  • the solution-treated forged product is automatically added to the water to be cooled, and the process of being heated to 170 ° C. and aging is carried out in one system while transferring the water-cooled forged product.
  • step S36 is quenched by forging the solution forged for 4 hours by a water cooling method, and the quenched forged product is aged for 7 hours while being heated to 170 °C as in step S37.
  • the forged product obtained through such a treatment has the same physical characteristics as the conventional forged product, and it is possible to manufacture a forged product having the same physical properties in a shorter time.
  • the present invention can improve the productivity of aluminum forgings by simplifying the processing of aluminum forgings, and by using the aluminum forgings in the heat solution to reduce the use of energy for the temperature increase the manufacturing cost to industrial applications There is this.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
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Abstract

The present invention relates to a heat treatment method for aluminium hot forging, comprising the steps of: a) producing a forged article by forging and trimming a heated starting material; b) raising the temperature to a temperature allowing solid solution treatment while residual heat remains in the forged article; c) subjecting the forged article, of which the temperature has been raised, to a solid solution treatment; and d) subjecting the forged article, which has undergone the solid solution treatment, to water cooling and an ageing treatment. The thus-configured present invention is a heat treatment method for aluminium hot forging in which the temperature of the forged article is raised to the solid solution treatment temperature and the forged article is subjected to a solid solution treatment without being air-cooled after hot forging, thereby giving the advantageous effect that the time needed to raise the temperature to the solid solution treatment temperature after air cooling is shortened and productivity is increased.

Description

알루미늄 열간단조의 열처리 방법Heat treatment method of aluminum hot forging
본 발명은 알루미늄 열간단조의 열처리 방법에 관한 것으로, 보다 상세하게는 열간단조 공정에서 사용되는 에너지를 절감하기 위한 알루미늄 열간단조의 열처리 방법에 관한 것이다.The present invention relates to a heat treatment method of aluminum hot forging, and more particularly to a heat treatment method of aluminum hot forging for reducing the energy used in the hot forging process.
일반적으로 알루미늄을 가열하여 단조로 특정한 제품의 형상을 가공하는 기술은 알려진 바와 같이 소재의 가열, 열간 단조, 트리밍, 공냉, 용체화처리, 수냉, 시효처리 과정들을 포함하고 있다.In general, the technique of heating aluminum to forge a specific product shape by forging includes processes of heating, hot forging, trimming, air cooling, solution treatment, water cooling, and aging treatment, as is known.
특히 알루미늄 합금의 용체화처리는 석출경화형 합금에서 반드시 필요한 공정이다. 석출경화란 결정 내부에 석출물을 형성시켜 재료의 물성을 향상시키는 방법이다.  In particular, the solution treatment of aluminum alloy is a necessary step in the precipitation hardening alloy. Precipitation hardening is a method of forming a precipitate inside a crystal to improve the physical properties of the material.
알루미늄 합금 내부에 석출물을 형성시키기 위해 먼저 재료를 가열하여 균일한 고용체로 만든 후 급랭하면 제2상을 석출할 수가 없어서 과포화 용질원자가 고용된 불안정한 상태의 단일상으로 된다. 이 처리를 용체화처리(Solution treatment)라고 한다. 불안정한 과포화된 상을 적당한 온도로 가열하면 석출이 시작되고 안정한 상태로 돌아간다. In order to form a precipitate inside the aluminum alloy, the material is first heated to a uniform solid solution and then quenched so that the second phase cannot be precipitated, resulting in an unstable single phase in which supersaturated solute atoms are dissolved. This treatment is called solution treatment. Heating the unstable supersaturated phase to an appropriate temperature starts precipitation and returns to a stable state.
　 이와 같이 온도에 의한 용해도의 변화로 모상 중에 용입된 용질원자가 모상의 결정에서 나와서 모상의 결정구조와 다른 구조로 되는 현상이 석출(precipitation)이다. 이 석출에는 원자의 확산을 위한 시간이 필요하므로 석출경화를 시효경화(Age hardening)라고도 하며, 시간경과와 더불어 석출이 진행되면서 경화현상이 일어난다. Precipitation is a phenomenon in which the solute atoms infiltrated into the mother phase due to the change of solubility by temperature come out of the crystal of the mother phase and become different from the crystal structure of the mother phase. Since precipitation requires time for atom diffusion, precipitation hardening is also called age hardening, and hardening occurs as precipitation progresses with time.
이와 같이 석출경화형 알루미늄 합금에는 용체화 처리가 필요하며, 이와 같은 종래 알루미늄 열간단조의 열처리 방법을 첨부한 도면을 참조하여 상세히 설명한다.  As such, the precipitation hardening-type aluminum alloy requires a solution treatment, which will be described in detail with reference to the accompanying drawings.
도 1은 종래 알루미늄 열간단조의 열처리 방법의 공정순서도이고, 도 2는 도 1의 공정단계별 온도와 시간을 기재한 공정 그래프이다.1 is a process flowchart of a conventional heat treatment method of aluminum hot forging, Figure 2 is a process graph describing the temperature and time for each process step of FIG.
도 1과 도 2를 각각 참조하면 종래 알루미늄 열간단조의 열처리 방법은, S11단계와 같이 먼저 소재를 500~550℃로 가열하고, S12 및 S13단계에서와 같이 열간단조를 수행한 후, 트리밍 과정을 진행하여 단조품을 제조한다.1 and 2, respectively, in the conventional heat treatment method of aluminum hot forging, the material is first heated to 500 to 550 ° C. as in step S11, and hot forging is performed as in steps S12 and S13, and then a trimming process is performed. Proceed to manufacture the forging.
이때 열간단조와 트리밍을 수행하는 총시간은 30초 정도이며, 그 열간단조 및 트리밍된 소재는 높은 가열된 상태가 된다.At this time, the total time for performing hot forging and trimming is about 30 seconds, and the hot forging and trimmed material are in a high heated state.
그 다음, S14단계에서는 상기 열간단조 및 트리밍된 단조품을 공기중에서 식히는 공냉 및 적재 과정을 거치게 된다.Next, in step S14, the hot forging and trimmed forgings are subjected to an air cooling and loading process for cooling in air.
그 다음, S16단계에서는 공냉된 상기 단조품을 다시 승온시켜 단조품을 용체화 처리시킬 수 있는 준비를 하게 된다. 이때 승온의 최종 목표온도는 용체화처리 온도인 530℃이며, 1.5 내지 2.5시간동안 단조품을 가열하여 그 최종 목표온도에 도달하도록 승온시킨다.Next, in step S16, the forged product is cooled again to prepare the solution for solution treatment. At this time, the final target temperature of the elevated temperature is 530 ° C, which is the solution treatment temperature, and the forged product is heated for 1.5 to 2.5 hours to raise the temperature to reach the final target temperature.
이때 온도를 더 급하게 상승시키는 경우 단조품이 열화되는 문제점이 발생하기 때문에 상대적으로 긴 시간동안 진행해야 한다.At this time, if the temperature rises more urgently, the forging is deteriorated, so it has to proceed for a relatively long time.
그 다음, S17단계에서와 같이 상기 승온 최종 온도인 530℃에서 하여 용체화 처리한다. 용체화 처리는 약 4시간동안 진행되며, 앞서 설명한 바와 같이 용체처리에 의해 균일한 고용체를 만든다.Then, the solution is subjected to a solution treatment at 530 ° C., which is the final temperature rise temperature as in step S17. The solution treatment proceeds for about 4 hours and, as described above, creates a uniform solid solution by solution treatment.
그 다음, S18단계에서는 상기 용체화 처리된 단조품을 수냉시키는 수냉공정을 수행하여 과포화 고용체를 생성하며, S19단계에서는 냉각된 단조품을 170℃에서 4 내지 7시간 동안 유지하여 시효처리한다.Then, in step S18 to perform a water-cooling process for water-cooled the solution-ized forged product to produce a supersaturated solid solution, and in step S19 it is aged by maintaining the cooled forged product at 170 ℃ for 4 to 7 hours.
상기한 바와 같이 종래 알루미늄 열간단조의 열처리 방법은 가열된 소재를 열간단조하기 위하여 가열하고, 그 열간단조 및 트리밍된 단조품을 공냉시킨 후, 다시 용체화처리를 위하여 가열하는 공정을 사용하기 때문에 그 단조품의 공냉과 재가열을 하는 공정시간이 많이 소요될 뿐만 아니라 냉각된 단조품을 재가열해야 하기 때문에 에너지의 사용량이 상대적으로 많은 문제점이 있었다.As described above, the conventional heat treatment method of aluminum hot forging uses a process of heating a hot material for hot forging, cooling the hot forging and trimmed forgings, and then heating the solution for solution treatment. The process of air-cooling and reheating takes a lot of time, and the energy consumption is relatively high because the cooled forging has to be reheated.
상기와 같은 문제점을 감안한 본 발명이 해결하고자 하는 과제는, 공정시간을 단축할 수 있으며, 에너지의 사용량을 줄일 수 있는 알루미늄 열간단조의 열처리 방법을 제공함에 있다.The problem to be solved by the present invention in consideration of the above problems is to provide a heat treatment method of aluminum hot forging that can shorten the process time, can reduce the amount of energy used.
상기와 같은 과제를 해결하기 위한 본 발명 알루미늄 열간단조의 열처리 방법은, a) 가열된 소재를 단조 및 트리밍하여 단조품을 제조하는 단계와, b) 상기 단조품의 잠열이 남아있는 상태에서 용체화 처리 가능온도로 승온시키는 단계와, c) 상기 승온된 단조품을 용체화 처리하는 단계와, d) 상기 용체화 처리된 단조품을 수냉하고, 시효처리하는 단계를 포함한다.The heat treatment method of the aluminum hot forging according to the present invention for solving the above problems, a) forging and trimming the heated material to produce a forging, and b) solution treatment can be performed in the state that the latent heat of the forging is left Heating to a temperature; c) subjecting the heated forged product to a solution; and d) water-cooling and aging the solution forged product.
본 발명 알루미늄 열간단조의 열처리 방법은 열간단조 후 그 단조품을 공냉시키지 않고 용체화 처리 온도로 승온시켜 용체화 처리가 되도록 함으로써, 공냉 후 용체화 처리온도까지의 승온에 필요한 시간을 단축하여 생산성을 향상시키는 효과가 있다.In the heat treatment method of the aluminum hot forging according to the present invention, after the hot forging, the temperature of the forged product is raised to the solution treatment temperature without air cooling, thereby shortening the time required for the temperature increase to the solution treatment temperature after air cooling to improve productivity. It is effective to let.
또한 본 발명 알루미늄 열간단조의 열처리 방법은, 단조품의 열을 이용하여 용체화 처리를 수행함으로써 공급되는 에너지를 줄여 제조비용을 절감하고, 단조품의 단가를 낮출 수 있는 효과가 있다.In addition, the heat treatment method of the aluminum hot forging of the present invention has the effect of reducing the energy supplied by performing the solution treatment by using the heat of the forged product to reduce the manufacturing cost, and lower the unit cost of the forged product.
도 1은 종래 알루미늄 열간단조의 열처리 방법의 공정순서도이다.1 is a process flowchart of a heat treatment method of a conventional aluminum hot forging.
도 2는 도 1의 공정단계별 온도와 시간을 기재한 공정 그래프이다.FIG. 2 is a process graph describing temperature and time for each process step of FIG. 1.
도 3은 본 발명의 바람직한 실시예에 따른 알루미늄 단조 공정 순서도이다.3 is a flowchart of an aluminum forging process according to a preferred embodiment of the present invention.
도 4는 도 1의 공정단계별 온도와 시간을 기재한 공정 그래프이다.4 is a process graph describing temperature and time for each process step of FIG. 1.
이하, 상기와 같은 본 발명 알루미늄 열간단조의 열처리 방법의 바람직한 실시예를 첨부한 도면을 참조하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings a preferred embodiment of the heat treatment method of the present invention hot forging aluminum as described above will be described in detail.
도 3은 본 발명의 바람직한 실시예에 따른 알루미늄 단조 공정 순서도이고, 도 4는 본 발명의 바람직한 실시예에 따른 알루미늄 단조 공정의 시간과 온도 그래프이다.Figure 3 is a flow chart of the aluminum forging process according to a preferred embodiment of the present invention, Figure 4 is a time and temperature graph of the aluminum forging process according to a preferred embodiment of the present invention.
도 3과 도 4를 각각 참조하면 본 발명의 바람직한 실시예에 따른 알루미늄 열간단조의 열처리 방법은, 소재를 가열하는 단계(S31)와, 상기 가열된 소재를 열간단조하여 단조품을 제조하는 단계(S32)와, 상기 제조된 단조품을 트리밍하는 단계(S33)와, 상기 트리밍된 단조품을 용체화 처리온도로 승온시키는 단계(S34)와, 상기 승온된 단조품을 그 용체화 처리온도에서 소정 시간 용체화 처리하는 단계(S35)와, 상기 용체화 처리된 단조품을 수냉하는 단계(S36)와, 상기 수냉된 단조품을 시효처리하는 단계(S37)로 이루어 진다.3 and 4, the method for heat treatment of aluminum hot forging according to a preferred embodiment of the present invention, the step of heating the material (S31), and the step of hot forging the heated material to produce a forging (S32) ), Trimming the manufactured forged product (S33), heating the trimmed forged product to a solution treatment temperature (S34), and solution treatment for a predetermined time at the solution treatment temperature. It consists of a step (S35), the step of water cooling the solution-ized forged product (S36), and the step of aging the water-cooled forged product (S37).
이하, 상기와 같이 구성되는 본 발명의 바람직한 실시예에 따른 알루미늄 열간단조의 열처리 방법과 효과에 대하여 보다 상세히 설명한다.Hereinafter, a heat treatment method and effects of aluminum hot forging according to a preferred embodiment of the present invention configured as described above will be described in more detail.
먼저, S31단계에서는 단조를 위한 알루미늄 소재를 500~550℃로 가열한다. 이때의 가열온도는 하나의 실시예이며 알루미늄 소재를 열간단조하기 위한 적당한 온도로 가열한다.First, in step S31 is heated to 500 ~ 550 ℃ aluminum material for forging. At this time, the heating temperature is one embodiment and is heated to a suitable temperature for hot forging the aluminum material.
그 다음, S32단계에서는 상기 가열된 소재를 금형에서 열간단조 처리하여 단조품을 제조하고, S33단계에서는 상기 단조품을 트리밍한다.Next, in step S32, the forged product is manufactured by hot forging the heated material in a mold, and in step S33, the forged product is trimmed.
상기 열간단조 및 트리밍에 소요되는 시간은 약 30초 이며, 이 시간의 경과에 따라 상기 단조품의 온도는 상기 소재의 가열온도인 500~550℃에서 소정의 온도로 냉각된다.The time required for hot forging and trimming is about 30 seconds, and as the time passes, the temperature of the forged product is cooled to a predetermined temperature at 500 to 550 ° C., which is a heating temperature of the material.
이때 냉각된 온도는 용체화가 가능한 온도범위 이거나 용체화가 가능한 온도보다 약간 낮은 온도가 될 수 있으며, 이는 외부 온도나 열간단조 장비의 조건 등에 따라 변경될 수 있다.At this time, the cooled temperature may be a temperature range that can be solutionized or a temperature slightly lower than the solutionable solution, which may be changed depending on the external temperature or the conditions of the hot forging equipment.
그 다음, S34단계에서는 상기 트리밍된 단조품의 온도를 용체화 처리 가능온도인 530℃까지 승온시킨다. 상기 트리밍된 단조품의 온도가 용체화 처리 가능온도 이하인 경우에 이와 같은 승온처리를 하며, 트리밍된 단조품의 온도가 용체화 처리 가능온도인 경우에는 승온 과정을 생략할 수 있다.Next, in step S34, the temperature of the trimmed forged product is raised to 530 ° C., which is the solutionable temperature. When the temperature of the trimmed forged product is below the solutionable temperature, the temperature increase process may be performed. When the temperature of the trimmed forged product is the solutionable temperature, the temperature raising process may be omitted.
종래에는 트리밍된 단조품을 공냉시켜 상온에서 다시 용체화 가능온도인 530℃까지 가열하기 때문에 그 승온에 필요한 시간이 약 1.5에서 2.5시간이 필요하였고, 에너지의 소비 또한 상대적으로 많았다.Conventionally, the trimmed forged product is cooled by air to 530 ° C., which is the solutionable temperature at room temperature, and thus, the time required for the elevated temperature is about 1.5 to 2.5 hours, and energy consumption is also relatively high.
그러나 본 발명에서는 열간단조 및 트리밍 직후에 단조품의 잠열이 남아있는 상태에서 용체화를 시킴으로써, 용체화 가능 온도까지 승온시키는 시간을 단축함과 아울러 공급되는 에너지를 줄일 수 있게 된다.However, in the present invention, by performing the solution in the state in which the latent heat of the forged product remains immediately after hot forging and trimming, it is possible to shorten the time for raising the temperature to the solutionable temperature and to reduce the energy supplied.
따라서 본 발명은 공정시간의 단축으로 생산성을 향상시키며, 비용을 절감하여 단조품의 가격을 낮출 수 있게 된다.Therefore, the present invention improves productivity by shortening the process time, and it is possible to reduce the cost of the forging by reducing the cost.
그 다음, S35단계에서는 상기 승온 또는 승온되지 않은 상태의 용체화 처리 가능온도인 단조품을 그 용체화 처리 온도에서 4시간 동안 유지하여 용체화 처리를 한다.Next, in step S35, the forged product, which is the solution temperature at which the temperature is elevated or not, is maintained at the solution temperature for 4 hours to perform solution solution.
상기 S33단계에서 트리밍된 단조품은 로봇에 의해 열처리로로 이송되며, 그 열처리로의 컨베이어를 지나면서 S34단계의 승온 및 S35단계의 용체화처리를 동시에 수행할 수 있으며, 이후에 설명하는 바와 같이 그 용체화처리된 단조품이 자동으로 물에 투입되어 수냉되도록 함과 아울러 그 수냉된 단조품을 이송하면서 다시 170℃까지 가열되어 시효처리되는 과정을 하나의 시스템에서 처리할 수도 있다.The forged product trimmed in step S33 is transferred to a heat treatment furnace by a robot, and can simultaneously carry out the temperature increase of step S34 and the solution treatment of step S35 while passing through the conveyor of the heat treatment furnace, as will be described later. The solution-treated forged product is automatically added to the water to be cooled, and the process of being heated to 170 ° C. and aging is carried out in one system while transferring the water-cooled forged product.
그 다음, S36단계에서는 상기 4시간동안 용체화된 단조품을 수냉의 방법으로 급냉시키며, 그 급냉된 단조품을 S37단계와 같이 170℃로 가열한 상태로 7시간 유지하여 시효처리 한다.Then, in step S36 is quenched by forging the solution forged for 4 hours by a water cooling method, and the quenched forged product is aged for 7 hours while being heated to 170 ℃ as in step S37.
이와 같은 처리를 통해 얻어지는 단조품은 그 물리적인 특성이 종래의 단조품과 동등한 수준이며, 이처럼 동등한 물성을 가지는 단조품을 보다 빠른 시간 내에 제조함이 가능하게 된다.The forged product obtained through such a treatment has the same physical characteristics as the conventional forged product, and it is possible to manufacture a forged product having the same physical properties in a shorter time.
본 발명은 알루미늄 단조품의 처리과정을 단순화하여 알루미늄 단조품의 생산성을 향상시킬 수 있으며, 알루미늄 단조품을 열을 용체화에 이용하여 승온을 위한 에너지의 사용량을 줄여 제조비용을 줄일 수 있는 것으로 산업상 이용 가능성이 있다.The present invention can improve the productivity of aluminum forgings by simplifying the processing of aluminum forgings, and by using the aluminum forgings in the heat solution to reduce the use of energy for the temperature increase the manufacturing cost to industrial applications There is this.

Claims (3)

  1. a) 가열된 소재를 단조 및 트리밍하여 단조품을 제조하는 단계;a) forging and trimming the heated material to produce a forging;
    b) 상기 단조품의 잠열이 남아있는 상태에서 용체화 처리 가능온도로 승온시키는 단계;b) heating the solution to a solutionable temperature in a state in which latent heat of the forged product remains;
    c) 상기 승온된 단조품을 용체화 처리하는 단계; 및c) solution treatment of the heated forging; And
    d) 상기 용체화 처리된 단조품을 수냉하고, 시효처리하는 단계를 포함하는 알루미늄 열간단조의 열처리 방법.d) a method of heat treatment of aluminum hot forging comprising the step of water-cooling and aging the solution-treated forging.
  2. 제1항에 있어서,The method of claim 1,
    상기 b) 단계는,B),
    상기 잠열이 남아있는 단조품을 용체화 처리 가능온도인 530℃로 승온시키는 것을 특징으로 하는 알루미늄 열간단조의 열처리 방법.The heat treatment method of aluminum hot forging, characterized in that for raising the forged product remaining the latent heat to 530 ℃ which is the solutionable temperature.
  3. 제1항 또는 제2항에 있어서,The method according to claim 1 or 2,
    상기 c) 단계는 상기 용체화 처리 가능온도로 승온된 단조품을 그 용체화 처리 가능온도에서 4시간 처리하는 것을 특징으로 하는 알루미늄 열간단조의 열처리 방법.The c) step is the heat treatment method of aluminum hot forging, characterized in that forging for 4 hours at the solutionable temperature of the forged product heated to the solutionable temperature.
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