KR101090429B1 - Ag alloy continuous casting material manufacturing method - Google Patents
Ag alloy continuous casting material manufacturing method Download PDFInfo
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- KR101090429B1 KR101090429B1 KR1020090025692A KR20090025692A KR101090429B1 KR 101090429 B1 KR101090429 B1 KR 101090429B1 KR 1020090025692 A KR1020090025692 A KR 1020090025692A KR 20090025692 A KR20090025692 A KR 20090025692A KR 101090429 B1 KR101090429 B1 KR 101090429B1
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- 229910001316 Ag alloy Inorganic materials 0.000 title claims abstract description 54
- 238000009749 continuous casting Methods 0.000 title claims abstract description 45
- 239000000463 material Substances 0.000 title claims abstract description 42
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 58
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 57
- 239000000956 alloy Substances 0.000 claims abstract description 13
- 238000000576 coating method Methods 0.000 claims abstract description 9
- 229910052582 BN Inorganic materials 0.000 claims abstract description 8
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000011248 coating agent Substances 0.000 claims abstract description 8
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract 4
- 229910052786 argon Inorganic materials 0.000 claims abstract 2
- 239000002184 metal Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 9
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 238000011109 contamination Methods 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 3
- 229910001339 C alloy Inorganic materials 0.000 abstract 1
- 238000002844 melting Methods 0.000 description 10
- 239000011247 coating layer Substances 0.000 description 9
- 230000008018 melting Effects 0.000 description 7
- 238000005266 casting Methods 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 229910001132 Ar alloy Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/059—Mould materials or platings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/08—Accessories for starting the casting procedure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/113—Treating the molten metal by vacuum treating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C5/00—Alloys based on noble metals
- C22C5/06—Alloys based on silver
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Continuous Casting (AREA)
Abstract
본 발명은, Ag 합금의 연속 주조재 제조 방법에 관한 것으로, 특히 고온에서 카본과 반응하는 Ag 합금 소재에 대해 수직형 고주파 진공 연속 주조 장비를 이용하여 카본의 오염을 방지하며, 카본의 혼입을 최소화하고 수율을 향상시킨 Ag 합금 연속 주조재를 저가의 더미바를 사용하여 제조가 가능한 것을 특징으로 한다. The present invention relates to a method for producing a continuous cast material of Ag alloy, in particular, to prevent the contamination of carbon and minimize the mixing of carbon by using a vertical high frequency vacuum continuous casting equipment for Ag alloy material reacting with carbon at high temperature And it is characterized in that the Ag alloy continuous casting material with improved yield can be manufactured using a low-cost dummy bar.
본 발명은, 카본 도가니와 주형에 이형재를 코팅하여 고온에서 카본과 Ag 합금 소재의 접촉을 방지한 후 주형에 미리 고정해놓은 쐐기를 저가의 더미바를 상승시켜 주형의 쐐기를 분리시킨 후 연속 주조하는 것을 특징으로 한다. The present invention is to coat the release material on the carbon crucible and the mold to prevent contact between the carbon and Ag alloy material at high temperature, and then to continuously cast the wedge fixed in the mold to raise the dummy dummy bar of low cost to separate the wedge of the mold and then continuously cast it. It features.
이를 위해서 카본 도가니와 주형에 보론나이트라이드를 코팅 후, Ag 합금 소재를 투입하여 진공 분위기에서 용해 후 아르곤을 파지하고, 주형에 미리 고정해놓은 카본 쐐기를 스테인리스 더미바를 이용하여 제거한 후 용탕을 주형으로 하강시키면서 연속적으로 Ag 합금 연속 주조재를 제조한다. For this purpose, after coating boron nitride on the carbon crucible and the mold, Ag alloy material is added, dissolved in a vacuum atmosphere, and the argon is grasped. Ag alloy continuous casting material is produced continuously.
Ag 합금, 수직형 고주파 진공 연속 주조, 카본 도가니, 카본 주형, 이형재, 더미바 Ag alloy, vertical high frequency vacuum continuous casting, carbon crucible, carbon mold, release material, dummy bar
Description
본 발명은 Ag 합금 연속 주조재의 제조방법에 관한 것이며, 더욱 상세하게는 고온에서 카본과 반응하는 Ag 합금 소재를 수직형 고주파 연속 주조 장비를 이용하여 연속 주조시 주형에 쐐기를 고정하여 분리하는 방법으로 저융점 더미바를 사용가능하며, 이형재의 사용을 통해 카본의 오염을 최소화 시키며, 수율이 90%이상 확보 가능한 Ag 합금 소재의 주조재를 제조하는 방법에 관한 것이다. The present invention relates to a method for producing an Ag alloy continuous casting material, and more particularly, to a method of separating and fixing a wedge to a mold during continuous casting by using a vertical high frequency continuous casting equipment for Ag alloy material reacting with carbon at a high temperature. It is possible to use a low melting dummy bar, to minimize the contamination of carbon through the use of a release material, and to a method of manufacturing a casting material of Ag alloy material that can secure a yield of 90% or more.
종래부터, Ag 합금 연속 주조재는 동종재료를 더미바로 사용하여 카본 도가니에서 용해 후 카본 주형을 통해 연속적으로 주조하여 제조하고 있었다. 이러한 종래의 제조법은 고온에서 카본과 반응하는 Ag 합금 연속 주조재 제조시 카본의 혼입에 의한 오염 및 수율 저감의 문제점이 있었다. 또한, Ag 합금을 더미바로 사용할 때 고가의 비용이 발생한다는 단점을 가지고 있었다. Conventionally, Ag alloy continuous casting materials have been manufactured by dissolving in a carbon crucible using the same material as dummy bars and continuously casting them through a carbon mold. This conventional manufacturing method has a problem of contamination and yield reduction due to mixing of carbon in the production of Ag alloy continuous cast material reacting with carbon at high temperature. In addition, the use of Ag alloy as a dummy bar has a disadvantage that the expensive cost occurs.
한편, 최근에는 고융점 재료를 이용한 더미바를 사용하여 연속 주조에 이용하고 있으나, 가공성의 난해 및 비용의 제약을 받고 있는 실정이다. On the other hand, recently, a dummy bar using a high melting point material has been used for continuous casting, but the situation is difficult to workability and cost is limited.
본 발명의 목적은, 고온에서 카본과 반응하는 Ag 합금 연속 주조재 제조에 대하여 수직형 고주파 진공 연속 주조기를 이용하여 카본 혼입을 최소화시키고, 수율을 향상시키는 데에 있다. 특히, 연속 주조시 주형에 장입된 저가의 더미바가 장시간 고온에 노출되어 파손되는 것을 방지하기 위해 주형에 쐐기를 고정시킨 후 주조 직전에 더미바를 이용하여 주형에서 쐐기를 분리하여 Ag 합금 연속 주조재를 제조하는 것을 특징으로 한다. An object of the present invention is to minimize the carbon incorporation and improve the yield by using a vertical high frequency vacuum continuous casting machine for the production of Ag alloy continuous casting material that reacts with carbon at high temperature. In particular, in order to prevent the inexpensive dummy bar charged into the mold from being exposed to high temperature for a long time, the wedge is fixed to the mold, and then the wedge is separated from the mold using the dummy bar immediately before casting to form Ag alloy continuous casting material. It is characterized by manufacturing.
이를 위해 주형에 쐐기를 고정시킨 후 카본 도가니 및 주형 표면에 이형재를 코팅한 후 Ag 합금 소재를 투입하여 진공 용해 후 주형의 쐐기를 저융점의 더미바를 이용하여 분리시켜 용탕을 주형으로 하강시켜 연속적으로 Ag 합금 주조재 제조가 가능하며, 카본함량이 0.15gr/m2이하이며, 수율이 90%이상 향상된 Ag 합금 연속 주조재 제조방법을 제공하는 것에 본 발명의 목적이 있다.To this end, fix the wedge to the mold, coat the release material on the surface of the carbon crucible and the mold, inject the Ag alloy material, vacuum dissolve, separate the wedge of the mold by using a dummy bar of low melting point, and lower the molten metal into the mold continuously. It is an object of the present invention to provide a method for producing an Ag alloy continuous casting material, a carbon content of 0.15 gr / m 2 or less, and a yield improvement of 90% or more.
본 발명은, 고온에서 카본과 반응하는 Ag 합금 소재의 카본 오염을 방지하고, 수율을 향상시키기 위해 카본 도가니 및 주형 표면에 이형재를 코팅하여 Ag 합금 연속 주조재를 얻으며, 이때 저가의 저융점 소재를 더미바로 사용하는 것을 특징으로 한다. In order to prevent carbon contamination of Ag alloy material reacting with carbon at high temperature and to improve yield, the present invention provides a continuous alloying material of Ag alloy by coating a release material on a carbon crucible and a mold surface, wherein a low-melting low-temperature material is obtained. Characterized in that it is used as a dummy bar.
Ag 합금 연속 주조재를 얻기 위한 제조공정은 다음과 같다. 주형에 쐐기를 고정하고 카본 도가니 및 주형 표면에 이형재를 코팅한 후 수직형 고주파 진공 연속 주조기 챔버에 설치하는 단계, 저가의 저융점 소재를 사용한 더미바를 설치하는 단계, 도가니에 Ag 합금 소재를 투입한 후 진공 용해를 통해 용탕을 형성하는 단계, 주형의 쐐기를 저가의 저융점 더미바로 제거한 후 주형으로 용탕을 하강시켜 연속적으로 Ag 합금 연속 주조재를 제조하는 단계로 구성되는 것을 특징으로 한다. The manufacturing process for obtaining Ag alloy continuous casting material is as follows. Fixing the wedge on the mold and coating the release material on the carbon crucible and the mold surface, and installing it in the vertical high frequency vacuum continuous casting chamber, installing the dummy bar using low-cost low melting material, Ag alloy material in the crucible After forming the molten metal through vacuum dissolution, the wedge of the mold is removed by a low-cost low-melting dummy bar, and then the molten metal is lowered into the mold, characterized in that the step of continuously manufacturing the Ag alloy continuous casting material.
상기에 설명한 바와 같이 본 발명은 Ag 합금 연속 주조재를 제조하는 것을 특징으로 하며, 본 발명에 의해 Ag 합금 연속 주조재를 제조할 경우, Ag 합금 연속 주조재를 90%이상의 수율로 제조가 가능하고, 카본의 혼입을 0.15gr/m2이하로 제어 가능한 효과가 있다. As described above, the present invention is characterized in that the Ag alloy continuous casting material is produced, and when the Ag alloy continuous casting material is manufactured by the present invention, it is possible to manufacture Ag alloy continuous casting material in a yield of 90% or more. , The effect of controlling the mixing of carbon to 0.15 gr / m 2 or less.
또한, 저가의 저융점 더미바의 사용을 통해 비용을 감소시킬 수 있다는 장점이 있다. In addition, there is an advantage that the cost can be reduced through the use of low-cost, low-melting dummy bar.
이하 상기의 공정 단계에 대해 상세하게 설명한다. Hereinafter, the above process steps will be described in detail.
먼저, 카본 주형에 카본 쐐기를 고정시킨다. 다음으로 카본 도가니와 주형의 표면을 코팅하기 전에 에탄올로 세척하고 건조한다. 이러한 과정을 통해 카본 도가니 및 주형의 표면을 깨끗하게 하고 코팅층과의 접착성을 향상시키며, 코팅층이 균일하게 되도록 하여 이후에 형성되는 코팅층이 보다 견고하게 부착될 수 있어서 결과적으로 코팅층의 사용수명이 증대된다. First, the carbon wedge is fixed to the carbon mold. Next, before coating the surface of the carbon crucible and the mold, it is washed with ethanol and dried. Through this process, the surface of the carbon crucible and the mold is cleaned and the adhesion to the coating layer is improved, and the coating layer is made uniform so that the coating layer formed thereafter can be more firmly attached, resulting in an increase in the service life of the coating layer. .
다음으로, 상기 카본 도가니와 주형의 표면에 스프레이(Spraying), 붓칠(Brushing), 침적(Dipping) 등의 방법 중에서 선택된 방법으로 카본 도가니 및 주형 표면에 균일하게 코팅 할 수 있으며, 상기 코팅 방법들 중에서 붓칠을 사용하는 것이 코팅 효율면에서 바람직하다. Next, the surface of the carbon crucible and the mold may be uniformly coated on the surface of the carbon crucible and the mold by a method selected from spraying, brushing, dipping, and the like, and among the coating methods It is preferable to use a brush painting in terms of coating efficiency.
상기 이형재 코팅층의 두께는 0.05mm 내지 0.25mm 정도가 바람직하다. 두께가 0.25mm 이상일 경우에는 코팅층이 두꺼워져 완전 소결이 어려운 문제가 있고, 0.05mm 이하인 경우에는 균일한 코팅층 형성에 어려운 문제가 있다. The thickness of the release material coating layer is preferably about 0.05mm to 0.25mm. If the thickness is 0.25mm or more, there is a problem that the coating layer is thick and it is difficult to completely sinter.
다음으로, 이형재가 코팅된 상기 카본 도가니 및 주형을 대기 중에서 4시간 건조 후 110℃에서 4시간 건조하여, 코팅된 보론나이트라이드층은 소결되어 실질적으로 기공이 없는 코팅층을 형성시킨다. Next, the carbon crucible and the mold coated with the release material are dried in the air for 4 hours and then dried at 110 ° C. for 4 hours, so that the coated boron nitride layer is sintered to form a coating layer substantially free of pores.
기공이 없는 보론나이트라이드층은 카본 도가니와 주형의 표면에 Ag 합금 소재가 직접적으로 접촉하는 것을 방지하며, 특히 고온에서 카본과 반응하는 Ag 합금 소재의 연속 주조를 가능하게 한다. The pore-free boron nitride layer prevents the Ag alloy material from directly contacting the surface of the carbon crucible and the mold, and enables continuous casting of the Ag alloy material that reacts with carbon, particularly at high temperatures.
상기 코팅층은 이로써 한정되는 것이 아니라, 알루미나, 지르코니아를 포함한다. The coating layer is not limited thereto, and includes alumina and zirconia.
상기 카본 도가니 및 주형을 수직형 고주파 진공 주조기의 챔버에 설치한 후, 더미바를 고정된 카본 쐐기의 하부에 위치시킨다. 더미바의 재질은 스테인리스 스틸을 사용한다. After the carbon crucible and the mold are installed in the chamber of the vertical high frequency vacuum casting machine, the dummy bar is placed under the fixed carbon wedge. The dummy bar is made of stainless steel.
로타리 펌프와 디퓨전 펌프를 이용하여 10-3Torr까지 감압 후 고주파 파워를 인가하여 Ag 합금을 용융시키고 용탕이 형성된 후, Ar투입에 의해 Ar 분위기를 조성한다. 용탕 형성 후 주형이 충분히 가열된 상태에서 주형에 고정되어 있는 카본쐐기를 더미바를 이용하여 주형에서 분리시킨다. After reducing the pressure to 10 -3 Torr using a rotary pump and a diffusion pump, high frequency power is applied to melt the Ag alloy and a molten metal is formed. After forming the melt, the carbon wedge fixed to the mold while the mold is sufficiently heated is separated from the mold using a dummy bar.
분리된 카본쐐기는 비중차이에 의해 용탕의 상부로 이동하고, 다시 더미바를 하강시켜 용탕을 주형으로 이동시키면서 연속적으로 Ag 합금 연속 주조재를 제조한다. The separated carbon wedge is moved to the upper portion of the molten metal by the difference in specific gravity, and the dummy bar is lowered again to continuously manufacture the Ag alloy continuous casting material while moving the molten metal to the mold.
[실시예 1]Example 1
Ag 합금을 구입하여 수직형 고주파 진공 연속 주조기를 이용하여 Ag 합금 연속 주조재를 제조한다. Ag alloys are purchased to manufacture Ag alloy continuous castings using a vertical high frequency vacuum continuous casting machine.
제조공정은, 카본 주형에 카본 쐐기를 고정시킨 후 카본 도가니 및 주형 표면을 토치로 예열한 후 액상의 보론나이트라이드로 균일하게 코팅한 후, 4시간 동안 자연건조 후 110℃ 오븐에서 4시간 동안 건조시킨다. 코팅된 도가니와 주형을 결합한 후 수직형 고주파 진공 연속 주조기 챔버에 설치하고, 주형에 스테인리스 스틸 더미바를 삽입하고, Ag 합금 소재를 도가니에 장입한다. In the manufacturing process, the carbon crucible is fixed to the carbon mold, the carbon crucible and the mold surface are preheated with a torch, uniformly coated with liquid boron nitride, and then dried for 4 hours in an oven at 110 ° C. for 4 hours after natural drying. . The coated crucible and the mold are combined and installed in a vertical high frequency vacuum continuous casting chamber, a stainless steel dummy bar is inserted into the mold, and an Ag alloy material is charged into the crucible.
로타리 펌프와 디퓨전 펌프를 이용하여 10-3Torr까지 감압 후 고주파 파워를 인가하여 Ag 합금을 용융시켰으며 용탕이 형성된 후 Ar투입에 의해 Ar 분위기를 조성한다. 용탕 형성 후 주형이 충분히 가열된 상태에서 주형에 삽입된 스테인리스 스틸 더미바를 상승시켜 주형에 고정시킨 카본 쐐기를 분리시킨다. After reducing the pressure to 10 -3 Torr using a rotary pump and a diffusion pump, Ag alloy was melted by applying high frequency power. After the molten metal was formed, Ar was formed by the Ar injection. After the molten metal is formed, the stainless steel dummy bar inserted into the mold is raised while the mold is sufficiently heated to separate the carbon wedge fixed to the mold.
용탕과 스테인리스 스틸 더미바를 접촉시킨 후 서브모터를 이용하여 120mm/min의 속도로 하강시키면서 Ag 합금 연속 주조재를 제조한다. 이때 주형의 하부에 Ar 가스를 파지시켜 Ag 합금 연속 주조재를 냉각시킨다. After the molten metal is brought into contact with the dummy bars, the Ag alloy continuous casting is manufactured while descending at a speed of 120 mm / min using a submotor. At this time, the Ar alloy is held in the lower part of the mold to cool the Ag alloy continuous casting material.
표 1에 Ag 합금 연속 주조재 제조 공정 조건을 나타내었다. 비교를 위해, 보론나이트라이드로 코팅을 하지 않은 카본 도가니와 주형으로 제조된 Ag 합금 연속 주조재 및 보론나이트라이드 코팅 후 카본 쐐기를 이용하지 않고 고융점 더미바를 사용하여 제조된 Ag 합금 연속 주조재의 수율 및 카본 함량을 표 2에 나타내었다. Table 1 shows the Ag alloy continuous casting manufacturing process conditions. For comparison, the yield of Ag alloy continuous casting made of carbon crucible and mold not coated with boron nitride and Ag alloy continuous casting made of high melting point dummy bar without carbon wedge after boron nitride coating And the carbon content is shown in Table 2.
[표 1][Table 1]
[표 2]TABLE 2
(카본 도가니 및 주형)Comparative Example 1
(Carbon crucible and mold)
(고융점 더미바 사용)Comparative Example 2
(Use high melting point dummy bar)
(1000gr 기준)yield
(1000gr standard)
본 발명에 의해 제조된 Ag 합금 연속 주조재의 수율은 90%이상이며, 코팅을 하지 않고 제조된 Ag 합금 연속 주조재의 카본 함량을 절반 수준으로 유지하였다. The yield of the Ag alloy continuous casting manufactured by the present invention is 90% or more, and the carbon content of the Ag alloy continuous casting manufactured without coating was maintained at half level.
표 2의 결과로부터, 카본 도가니 및 주형에 코팅된 보론나이트라이드 코팅층이 고온에서 Ag 합금과 카본의 반응을 억제시킴을 알 수 있다. From the results of Table 2, it can be seen that the boron nitride coating layer coated on the carbon crucible and the mold inhibits the Ag alloy and the carbon reaction at high temperature.
또한, 주형에 카본 쐐기를 고정하여 저가의 더미바를 사용하여 제조된 Ag 합금 연속 주조재와 카본 쐐기를 사용하지 않고 고융점 더미바를 사용하여 제조된 Ag 합금 연속 주조재는 수율과 카본 함량에서 유사한 값을 나타내었다. 따라서, 카본 쐐기를 이용하여 저가의 더미바 사용이 가능함을 확인하였다. In addition, Ag alloy continuous castings prepared using low-cost dummy bars by fixing carbon wedges to molds and Ag alloy continuous castings manufactured using high melting point dummy bars without using carbon wedges have similar values in yield and carbon content. Indicated. Therefore, it was confirmed that inexpensive dummy bars can be used using carbon wedges.
도 1은 본 발명의 Ag 합금 연속 주조재를 제조하는 작업순서도이다, 1 is a work flow chart for producing Ag alloy continuous casting material of the present invention,
도 2는 주형에 쐐기를 고정시키고, 카본 도가니 및 주형에 이형재를 코팅한 모습을 나타내는 도면이다. 2 is a view showing a state in which a wedge is fixed to a mold and a release material is coated on a carbon crucible and the mold.
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| US20020036074A1 (en) * | 1999-05-27 | 2002-03-28 | Shay James Donald | Process for starting a continuous casting mold |
| KR100825296B1 (en) | 2006-09-25 | 2008-04-28 | 재단법인 포항산업과학연구원 | Manufacturing method and apparatus for joining Ag-Cu eutectic alloy strip |
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| US20020036074A1 (en) * | 1999-05-27 | 2002-03-28 | Shay James Donald | Process for starting a continuous casting mold |
| KR100825296B1 (en) | 2006-09-25 | 2008-04-28 | 재단법인 포항산업과학연구원 | Manufacturing method and apparatus for joining Ag-Cu eutectic alloy strip |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022029302A1 (en) | 2020-08-06 | 2022-02-10 | Sms Group Gmbh | Method for regulating a stopper casting device in a vacuum induction casting device, device for automatically controlling a stopper casting device, and system for charging, melting, and casting metal and metal alloys under a vacuum and/or a protective gas atmosphere |
| WO2022029298A1 (en) | 2020-08-06 | 2022-02-10 | Sms Group Gmbh | Casting nozzle or casting distributor, assembly and method for heating and/or preheating a casting nozzle |
| WO2022029300A1 (en) | 2020-08-06 | 2022-02-10 | Sms Group Gmbh | Vacuum induction casting device for casting metal and metal alloys under a vacuum and/or a protective gas atmosphere, and method for changing a stopper rod and/or a closure body of a stopper casting device on a vacuum induction casting device |
| WO2022029301A1 (en) | 2020-08-06 | 2022-02-10 | Sms Group Gmbh | System for charging, melting and casting metal and metal alloys in a vacuum and/or shielding gas atmosphere, device for sealing a vacuum induction casting apparatus and method for quasi-continuous melting and casting of metal in a vacuum and/or shielding gas atmosphere |
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