KR20040041813A - Process for preparing a fragnant metal body using a sintered porous metal plate - Google Patents

Process for preparing a fragnant metal body using a sintered porous metal plate Download PDF

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KR20040041813A
KR20040041813A KR1020020069868A KR20020069868A KR20040041813A KR 20040041813 A KR20040041813 A KR 20040041813A KR 1020020069868 A KR1020020069868 A KR 1020020069868A KR 20020069868 A KR20020069868 A KR 20020069868A KR 20040041813 A KR20040041813 A KR 20040041813A
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metal
metal powder
metal fiber
mold
molded
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최성조
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최성조
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F3/11—Making porous workpieces or articles
    • B22F3/1143—Making porous workpieces or articles involving an oxidation, reduction or reaction step
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
    • A61L9/04—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air without heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B22F2003/241—Chemical after-treatment on the surface
    • B22F2003/242—Coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B22F2003/247—Removing material: carving, cleaning, grinding, hobbing, honing, lapping, polishing, milling, shaving, skiving, turning the surface

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)

Abstract

PURPOSE: A method for manufacturing an aromatic metallic product using porous sintered sheet is provided to obtain a more elegant and delicate artifact by improving surface forming characteristics and obtain an aesthetic ornament having superior aromatic property and fine surface by easily controlling inner porosity without dimensional change. CONSTITUTION: The method for manufacturing an aromatic metallic product using porous sintered sheet comprises a step of injecting the slurry into a plate shaped mold after preparing a slurry having fluidity by mixing fine metal powder or metal fiber, or metal powder or metal fiber with an aqueous resin binder solution having thermosetting and water soluble characteristics so that the slurry is molded in the mold, or directly laying up metal powder or metal fiber to a certain thickness into the plate shaped mold so that the metal powder or metal fiber is molded in the mold; a step of manufacturing a porous sintered metal sheet by heating the molded metal powder or metal fiber to a high temperature at a reduction atmosphere or under the vacuum conditions; a step of making a certain green body by forming the porous sintered metal sheet in a press to which certain shaped dies are attached; and a step of giving aromatic property to the green body by injecting incense into the green body after polishing the green body or coating the surface of the green body.

Description

다공질 소결판을 이용한 방향성 금속 제품의 제조방법 {Process for preparing a fragnant metal body using a sintered porous metal plate }Process for preparing a fragrant metal body using a porous sintered plate {process for preparing a fragnant metal body using a sintered porous metal plate}

본 발명은 직경이 1 미크론 보다 크고 200 미크론보다 작은 금속분말이나 금속섬유를 판상으로 성형한후 고온에서 소결하여 기공율 30%-60%의 판상 다공질 소결체를 만든후 이 다공질 소결판을 이용해 프레스 성형 작업으로 원하는 다공질 성형체를 제조하여 표면이 미려하면서도 기공율의 제어가 용이하여 향료의 주입이 자유롭고 형상의 표현이 보다 심미적인 방향성 금속 장식품을 제조하는 방법에 관한 것이다.According to the present invention, a metal powder or metal fiber having a diameter larger than 1 micron and smaller than 200 microns is formed into a plate shape, and then sintered at high temperature to form a plate-shaped porous sintered body having a porosity of 30% to 60%, and then press-molded using the porous sintered plate. The present invention relates to a method for manufacturing a directional metal ornament, which is manufactured by a desired porous molded body, and has a beautiful surface and easy control of porosity, thus allowing the injection of flavors freely and aesthetic expression more aesthetically.

이러한 방향성을 가지는 금속소결체의 제조방법은 특허 100255185, 출원1020010061313에서 보듯이 직경 100 미크론 이상의 금속분말이나 직경 50미크론 이하의 금속섬유상 분말을 사용하여 원하는 형상의 금형에 장입한후 유압 프레스에서 600Mpa 이상으로 성형하여 예비 성형체(green body ) 를 만든다.The method for producing a sintered metal body having such a directionality is, as shown in Patent 100255185, Application No. 1020010061313, using a metal powder of 100 microns or more in diameter or a metal fiber powder of 50 microns or less in diameter, and then charging it into a mold of a desired shape, and then to 600 Mpa or more in a hydraulic press. Molding produces a green body.

이때 600Mpa이상의 고압으로 성형하는 이유는 예비성형체의 강도를 확보하기 위한 것으로 600Mpa이하의 압력에서 성형할 경우 예비성형체의 강도가 적어서 다음공정의 취급시 성형체가 파손될 우려가 있다. 또한 100 미크론 이하의 급속분말을 사용할 경우, 600Mpa의 고압으로 성형할 경우 기공율이 15%이하가 되어 향료의 주입이 어려워 진다. 따라서 적정한 기공율과 강도를 얻기 위해서 100미크론 이상의 분말과 600Mpa 이상의 고압성형이 필요해진다.(특허100255185)At this time, the reason for molding at a high pressure of 600Mpa or more is to secure the strength of the preform, when molding at a pressure of 600Mpa or less, the strength of the preform is small, there is a fear that the molded body is damaged during the handling of the next process. In addition, when using a rapid powder of less than 100 microns, when molding at a high pressure of 600Mpa porosity is less than 15%, it is difficult to inject perfume. Therefore, in order to obtain proper porosity and strength, powder of 100 micron or more and high pressure molding of 600 Mpa or more are required (Patent 100255185).

출원 1020010061313 에서는 금속소결체의 기공율을 증가시키기 위해 금속섬유상 분말을 사용하거나 구형분말과 혼합하여 사용한다. 그러나 이방법은 금속분말을 사용시 보다 표면의 미려도가 떨어지고 고온에서 소결함으로써 수축율이 높아 정교한 제품을 제조하기 어렵다.In application 1020010061313, in order to increase the porosity of the metal sintered body, a metal fibrous powder is used or mixed with a spherical powder. However, this method is more difficult to manufacture a sophisticated product because the surface is less beautiful than when using a metal powder and sintered at a high temperature, the shrinkage is high.

따라서 본 발명에서는 이러한 문제점을 해결하기 위해서 금속분말을 프레스 성형하여 고온에서 소결하는 대신 금속분말 혹은 금속섬유를 다공성을 가지는 소결 판상으로 제조한후 판상의 소결제를 원료로하여 프레스 성형하므로써 성형 압력을 낯추고 이미 소결된 판재를 성형하는 것이기 때문에 미려한 형상의 제품을 얻을수 있다.Therefore, in order to solve this problem, instead of press molding the metal powder and sintering at high temperature, the metal powder or the metal fiber is made into a sintered plate having a porosity, and then press molding is performed using the plate sintering agent as a raw material. It is possible to obtain a beautifully shaped product because it is molding a sheet that is bare and already sintered.

본 발명에서 이루려는 과제는, 종래의 기술에서 문제점인 고압성형후 고온소결시 생기는 수축에의한 칫수 변화와 표면의 미려도가 감소하는 것을 방지하여 판재를 소결한후에 성형하기 때문에, 금형의 형상 그대로 성형이 되며 다공성 판재의 성형으로, 프레스 압력을 적게하여도 종래의 기술에 비해 고도의 정밀한 표면을 가질수 있다.The problem to be solved in the present invention is that the shape of the mold is maintained after sintering the plate material, preventing the change of the dimension and shrinkage of the surface caused by high temperature sintering after the high pressure molding, which is a problem in the prior art. Forming and forming a porous plate, it is possible to have a highly precise surface compared to the prior art even with a low press pressure.

본 발명이 이루려는 또하나의 과제는, 종래의 기술에서 달성하기 어려운 기공율 제어가 용이한 것이다. 종래의 기술에서는 금속분말을 600Mpa이상의 고압에서 성형하여야만 그 다음 공정에서 취급이 가능한 강도가 얻어지기 때문에 성형체의 기공율이 10% -25% 에 불과하다. 이러한 기공율은 대기압상태에서 향료를 주입하기가 어려워 진공함침 방법을 사용한다.Another object of the present invention is to facilitate porosity control that is difficult to achieve in the prior art. In the prior art, the porosity of the molded body is only 10% -25% because the metal powder must be molded at a high pressure of 600 MPa or more to obtain a strength that can be handled in the next process. This porosity is difficult to inject perfume at atmospheric pressure, so a vacuum impregnation method is used.

이러한 진공함침은 진공장치가 필요하며 일반 수요자들이 손쉽게 사용하기 어려운 문제가 있다. 본 발명에 의한 다공성 금속 소결판을 이용하여 성형한 방향성 금속소결체는 원료로 사용하는 금속소결판의 기공율과 소결판의 두께를 조정하여 최종 성형체의 기공율을 20%-50%까지 용이하게 조절할수 있어 대기압에서 향료를 소결체 표면에 접촉하는 것만으로도 쉽게 향료의 주입이 가능하다. 이와같은 용이한 향료 주입은 일반 수요자가 필요에 따라 재사용을 가능하게 하기 때문에 보다 높은 상품성을 부여할수 있다.This vacuum impregnation requires a vacuum device and there is a problem that is difficult to use by ordinary consumers. Directional metal sintered body formed using the porous metal sintered plate according to the present invention can easily adjust the porosity of the final molded body by 20% -50% by adjusting the porosity of the metal sintered plate used as a raw material and the thickness of the sintered plate The fragrance can be easily injected only by contacting the fragrance at the atmospheric pressure with the surface of the sintered body. Such easy fragrance injection can be given a higher marketability because the general consumer can reuse as needed.

본 발명은 금속분말 혹은 금속섬유를 수용성 열경화 특성을 가지는 수지 바인더 수용액과 혼합하여 스러리 상태로 유동성을 부여하여 판상의 주형에 주입하는 습식 성형 방법이거나, 혹은 건식으로 판상의 주형에 금속분말이나 금속섬유를 직접 일정두께로 적층성형하는 단계와, 성형된 금속분말 혹은 금속섬유를 환원분위기나 진공에서 고온가열하여 다공성 금속 소결판을 제조하는 단계, 다공성 금속 소결판을 원료로 하여 일정형상의 금형이 부착된 프레스에서 성형하여 소정의 성형체를 만드는 단계, 성형체를 연마하거나 표면을 코팅한후 향료를 주입하여 방향성을 부여하는 단계로 이루어져 있다.The present invention is a wet molding method in which a metal powder or a metal fiber is mixed with an aqueous resin binder solution having water-soluble thermosetting properties to impart fluidity in a slurry state and injected into a plate-shaped mold, or dryly dry the metal powder in a plate-shaped mold. Laminating the metal fiber directly to a certain thickness, and manufacturing a porous metal sintered plate by heating the formed metal powder or metal fiber at a high temperature in a reducing atmosphere or vacuum, and forming a predetermined mold using the porous metal sintered plate as a raw material. Forming a predetermined molded body by molding in the attached press, and polishing the molded body or coating the surface consists of a step of imparting aroma by injecting fragrance.

본 발명을 좀더 상세히 설명하면 다음과 같다.The present invention will be described in more detail as follows.

금속분말의 크기는 1-200 미크론이 적당하다. 1 미크론 이하는 형성되는 기공의 크기가 너무 작아 향료의 주입이 어려우며 200 미크론 이상은 소결체의 표면이 미려하지 않아 장식품으로는 적당하지가 않다. 판상의 소결체를 제조하기위한 판재의 성형은 열충격에 강하고 고온에서 안정한 그라파이트 주형에 금속분말이나 금속섬유를 일정두께로 적층한 다음 암모니아 가스를 분해한 질소와 수소의 혼합가스 분위기에서 소결처리 하거나 , 1 토르 이하의 진공분위기에서 소결처리 하는 것이 좋다.The size of the metal powder is suitably 1-200 microns. Less than 1 micron, the size of the pores formed is so small that it is difficult to inject fragrance, and the surface of the sintered body is more than 200 microns is not suitable as an ornament. Forming the plate material for manufacturing the plate-shaped sintered body is made by laminating a metal powder or metal fiber to a certain thickness in a graphite mold that is resistant to thermal shock and stable at high temperature, and then sintered in a mixed gas atmosphere of nitrogen and hydrogen decomposed ammonia gas. It is recommended to sinter in a vacuum atmosphere below torr.

그러나 그라파이트 주형은 고가의 재료이기 때문에 대량 생산시 다량의 그라파이트 주형은 생산원가를 높이는 원인이 된다. 이러한 이유로 소결하기 전에 예비 성형체를 만드는 것이 좋다. 금속분말 혹은 금속섬유를 열경화성을 가지며 수용성인 유기바인더와 혼합하여 스러리 상태로 주형에 주입후 섭씨80-140도에서 1시간이상 가열 건조하면 수분은 제거 되고 바인더가 경화되어 주형에서 취출하여도 다음공정에서 취급이 가능한 강도를 가지게 된다. 이때 바인더는 폴리비닐알콜(polyvinylalchol),메틸 셀룰로우스(methylcellulose), 카복시메틸셀룰로우스(carboxy methylcellulose)등을 사용한다.However, since graphite molds are expensive materials, a large amount of graphite molds can increase production costs during mass production. For this reason it is good to make preforms before sintering. After mixing the metal powder or metal fiber with thermosetting and water-soluble organic binder and injecting it into the mold in the state of slurries, if it is heated and dried at 80-140 degrees Celsius for more than 1 hour, the moisture is removed and the binder is cured and then taken out from the mold. It has strength that can be handled in the process. In this case, the binder is polyvinyl alcohol, methyl cellulose, methyl cellulose, or carboxy methyl cellulose.

소결분위기는 건식 방법과 동일하며 바인더는 소결온도로 가열되는 동안 열분해되어 제거된다. 소결시 가압을 하지않는 것이 기공율을 높이는 방법이다. 이렇게 얻어지는 판상 소결체의 기공율은 30%-60%에 달하며 분말크기가 클수록 기공율은 증가한다.The sintering atmosphere is the same as in the dry method, and the binder is pyrolyzed and removed while being heated to the sintering temperature. Not pressing during sintering is a way to increase the porosity. The porosity of the plate-like sintered body thus obtained reaches 30% -60%, and the larger the powder size, the higher the porosity.

이렇게 얻어진 판상 소결체는 소정의 형상을 부여하기위해 금형으로 프레스 성형을 하게된다. 분말을 성형하는 경우와 달리 다공성 판재를 성형하기 때문에 100Mpa의 압력으로 성형이 가능하다. 따라서 고가의 유압프레스 대신 파워프레스로 성형이 가능하다.The plate-like sintered body thus obtained is press molded into a mold in order to give a predetermined shape. Unlike the case of molding the powder, since the porous plate is molded, the molding can be performed at a pressure of 100 Mpa. Therefore, it is possible to mold by power press instead of expensive hydraulic press.

분말을 프레스성형 하는 경우는 성형체의 표면이 미려하기 어렵고 표면 요철이 심한 경우 파손되기 쉬우나 본 발명에서 제안한 판상 소결체를 사용하는 경우는 매우 예리한 표현도 가능해진다.In the case of press molding the powder, the surface of the molded body is difficult to be beautiful, and when the surface irregularities are severe, it is easy to be broken, but when the plate-shaped sintered body proposed in the present invention is used, a very sharp expression is also possible.

제조된 성형체는 기공율이 20%-50%에 달하여 표면을 연마하거나 코팅하여도 기공이 막힐 염려가 없으며 장신구의 목적에 따라 가공한후 향료를 대기압에서 표면에 떨어뜨리면 형성된 기공을 통해 향료가 모세관 현상에의해 내부로 침투되고 방향성을 장시간 유지하는 금속장신구로 이용되는 것이다.The manufactured molded article has a porosity of 20% -50%, so there is no fear of pore clogging even if the surface is polished or coated. It is used as metal jewelry to penetrate inside and maintain directionality for a long time.

< 실시예1 ><Example 1>

평균직경 50 미크론인 Cu 18Ni 18Zn의 조성을 가지는 구리합금 분말 350g과 5%폴리비닐알콜 50cc를 잘 혼합하여 스러리형태를 만들었다. 이 스러리를 10cm * 10cm 그라파이트 주형에 부어넣고 일정두께로 유지 시킨다음 섭씨 100도에서 1시간 건조하여 예비성형체를 만들었다. 이 예비성형체는 수분은 제거되고 바인더가 경화되어 딱딱한 상태로 주형에서 분리하여도 다음공정에서 취급하는데 지장이 없었다.350 g of copper alloy powder having a composition of Cu 18 Ni 18 Zn having an average diameter of 50 microns and 50 cc of 5% polyvinyl alcohol were mixed well to form a slurry. The slurry was poured into a 10 cm * 10 cm graphite mold, kept at a constant thickness, and then dried at 100 degrees Celsius for 1 hour to form a preform. This preform had no problem in handling in the next step even though the water was removed and the binder was cured and separated from the mold in a hard state.

이 성형체를 암모니아를 분해한75%의수소와 25%의 질소 분위기에서 섭씨 900도로 가열하여 소결하였다. 유기바인더는 가열도중 열분해되어 제거 되었고 금속분말은 소결되어 기공율 50%인 판상의 다공성 소결체를 얻었다. 이 다공성 소결체를 원료로 하여 1 톤 파워 프레스에서 직경3 cm , 두께0.5cm 의 장신구를 성형하였다. 표면이 매우 미려하면서 기공율이35%인 다공질 성형체를 얻었다. 이 성형체를 배럴연마를 통해 표면에 광택을 낸후 향료를 표면에 떨어뜨려 주입시켜 방향성을 가지는 장신구를 만들었다.The molded body was heated and sintered at 900 degrees Celsius in an atmosphere of 75% hydrogen decomposed ammonia and 25% nitrogen. The organic binder was thermally decomposed during heating and the metal powder was sintered to obtain a porous porous sintered body having a porosity of 50%. Using this porous sintered body as a raw material, ornaments having a diameter of 3 cm and a thickness of 0.5 cm were molded in a one-ton power press. A porous molded article having a porosity of 35% was obtained with a very beautiful surface. The molded body was polished on the surface through barrel polishing, and then perfume was dropped on the surface to inject directional jewelry.

< 실시예2 ><Example 2>

평균직경 15 미크론 이고 평균길이 150 미크론인 스테인레스 섬유상 분말 200g과 평균직경 50 미크론인 스테인레스 구형분말 100g을 잘 혼합한 다음 표면이 알루미나로 코팅된 10cm * 10 cm 그라파이트 주형에 넣고 가벼운 진동을 주어 일정두께로 균일하게 분포시켰다. 이때 두께는 1.5cm 이고 겉보기비중은 진비중의 30%인 2.4g/cc였다. 이 섬유상 분말이 충진된 그라파이트 주형을 진공도가 1 토르 이하인 진공로에서 섭씨 1200도에서 1시간 가열하여 소결하여 판상의 소결체를 얻었다. 이때 소결체의 비중은 3.2g/cc로서 기공율은 60%였다. 이 다공성 소결체를 원료로 하여 1 톤 파워 프레스에서 직경3 cm , 두께0.5cm 의 장신구를 성형하였다. 표면이 매우 미려하면서 기공율이40%인 다공질 성형체를 얻었다. 이 성형체를 배럴연마를 통해 표면에 광택을 낸후 0.5 미크론 두께로 진공증착 금도금을 한뒤 향료를 표면에 떨어뜨려 주입시켜 방향성을 가지는 장신구를 만들었다.Mix 200 g of stainless fibrous powder with an average diameter of 15 microns and an average length of 150 microns with 100 g of stainless spherical powders with an average diameter of 50 microns, and then place it in a 10 cm * 10 cm graphite mold coated with alumina to give a light vibration. Evenly distributed. At this time, the thickness was 1.5cm and the apparent specific gravity was 2.4g / cc, which is 30% of the true specific gravity. The graphite mold filled with this fibrous powder was heated and sintered at 1200 degrees Celsius for 1 hour in a vacuum furnace having a vacuum degree of 1 Torr or less to obtain a plate-shaped sintered body. At this time, the specific gravity of the sintered compact was 3.2 g / cc and the porosity was 60%. Using this porous sintered body as a raw material, ornaments having a diameter of 3 cm and a thickness of 0.5 cm were molded in a one-ton power press. A porous molded article having a porosity of 40% was obtained while the surface was very beautiful. The molded product was polished on the surface by barrel polishing, vacuum-coated gold-plated to a thickness of 0.5 microns, and then injected with a drop of fragrance on the surface to make directional jewelry.

본 발명은 금속분말을 직접 고압의 프레스로 성형하여 소결체를 만드는 것과 달리 판상의 소결체를 제조한 다음 프레스 성형을 하여 다공질의 금속성형체를 제조하는 방법에 관한 것이다. 이러한 제조방법은 기존의기술에 비해 다음과 같은 효과가 있다.The present invention relates to a method of manufacturing a porous metal molded body by manufacturing a plate-shaped sintered compact and then press molding the metal powder directly into a high pressure press to form a sintered compact. This manufacturing method has the following effects compared to the existing technology.

첫째, 고가의 유압프레스 대신 파워프레스를 사용할수 있고 분말성형 금형에 비해 금형비용이 1/5에 불과하여 경제적이다.First, power presses can be used instead of expensive hydraulic presses, and the mold cost is only 1/5 of the cost of powder forming molds.

둘째, 직접 분말을 성형하는 것이 아니고 소결된 판재를 성형하기 때문에 성형깊이가 크고 표면형상이 훨씬 미려하고 세밀하게 표현 할수 있다.Second, because the molding of the sintered plate rather than forming the powder directly, the molding depth is large and the surface shape can be expressed more beautifully and finely.

셋째, 고압으로 성형 할 필요가 없기 때문에 분말크기와 판재의 두께로 기공율 제어가 용이하여 최대 50%까지 기공율을 유지하므로서 향료의 주입시 진공함침이 필요치 않고 대기압에서 향료를 접촉시키는 것으로 충분하다. 이것은 수요자의 필요에 따라 향료 주입이 가능하여 방향성 금속으로서 상품성을 크게 향상 시킨다.Third, because it does not need to be molded at high pressure, porosity can be easily controlled by the powder size and the thickness of the plate, maintaining the porosity up to 50%, it is sufficient to contact the perfume at atmospheric pressure without the need for vacuum impregnation when injecting the perfume. It is possible to inject the perfume according to the needs of the consumer, which greatly improves the marketability as an aromatic metal.

Claims (4)

미세한 금속분말 이나 금속섬유, 금속분말 혹은 금속섬유를 수용성 열경화 특성을 가지는 수지 바인더 수용액과 혼합하여 스러리 상태로 유동성을 부여하고 판상의 주형에 주입하는 습식 성형 방법이거나, 혹은 건식으로 판상의 주형에 금속분말이나 금속섬유를 직접 일정두께로 적층성형하는 단계와, 성형된 금속분말 혹은 금속섬유를 환원분위기나 진공에서 고온가열하여 다공성 금속 소결판을 제조하는 단계, 다공성 금속 소결판을 원료로 하여 일정형상의 금형이 부착된 프레스에서 성형하여 소정의 성형체를 만드는 단계, 성형체를 연마하거나 표면을 코팅한후 향료를 주입하여 방향성을 부여하는 단계로 이루어진 다공질 방향성 금속 소결체의 제조방법.A wet molding method in which a fine metal powder, a metal fiber, a metal powder, or a metal fiber is mixed with an aqueous resin binder solution having water-soluble thermosetting properties to impart fluidity in a slurry state and inject it into a plate-shaped mold, or dry plate-shaped mold. Laminating the metal powder or the metal fiber directly to a certain thickness on the substrate, and manufacturing the porous metal sintered plate by heating the molded metal powder or the metal fiber at a high temperature in a reducing atmosphere or in a vacuum. A method of manufacturing a porous aromatic metal sintered body comprising the steps of forming a predetermined molded body by molding in a press with a predetermined mold, and applying a fragrance after polishing the molded body or coating the surface. 1항에서 금속분말 이나 금속섬유는 직경이 1 미크론이상 200 미크론 이하인 스테인레스, 구리-니켈합금, 구리-니켈-아연합금, 니켈 및 그합금, 티타늄 및 그합금 , 금 및 그합금, 은 및 그 합금 으로 한다.In 1, the metal powder or metal fiber is composed of stainless steel, copper-nickel alloy, copper-nickel-zinc alloy, nickel and its alloys, titanium and its alloys, gold and its alloys, silver and their alloys having a diameter of 1 micron or more and 200 microns or less. It is done. 1항에서 바인더는 폴리비닐알콜(polyvinylalchol),메틸셀룰로우스(methylcellulose),에틸셀룰로우스(ethylcellulose),카복시메틸셀룰로우스(carboxymethylcellulose)로 한다.The binder in paragraph 1 is made of polyvinyl alcohol, methyl cellulose, ethyl cellulose, carboxymethyl cellulose. 1항에서 바인더의 금속에 대한 혼합비는 부피비율로 30% - 60%로 한다.In 1, the mixing ratio of the binder to the metal is 30% to 60% by volume.
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KR100720106B1 (en) * 2005-07-08 2007-05-18 한국기계연구원 Foam of the copper-zinc alloy with excellent corrosion resistance and thereof manufacturing method
KR100778786B1 (en) * 2006-04-28 2007-11-28 윤종호 Manufacturing method of spectacles frame using a titanium powder injection molding
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KR100918593B1 (en) * 2008-08-07 2009-09-24 주학식 Fragrance emitting and method for manufacturing the same
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JPH0987704A (en) * 1995-09-27 1997-03-31 Mitsubishi Materials Corp Production of porous sintered metallic plate
KR19980080137A (en) * 1997-03-11 1998-11-25 가타야마 쓰네코 Manufacturing method of metal porous body, metal porous body and battery electrode manufactured by this method
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Publication number Priority date Publication date Assignee Title
KR100720106B1 (en) * 2005-07-08 2007-05-18 한국기계연구원 Foam of the copper-zinc alloy with excellent corrosion resistance and thereof manufacturing method
KR100803665B1 (en) * 2005-07-20 2008-02-19 한국기계연구원 Cu-Ni porous alloy and method for fabricating the same
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