KR20230076350A - Cemented carbide composite material and manufacturing method thereof - Google Patents
Cemented carbide composite material and manufacturing method thereof Download PDFInfo
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- KR20230076350A KR20230076350A KR1020210163182A KR20210163182A KR20230076350A KR 20230076350 A KR20230076350 A KR 20230076350A KR 1020210163182 A KR1020210163182 A KR 1020210163182A KR 20210163182 A KR20210163182 A KR 20210163182A KR 20230076350 A KR20230076350 A KR 20230076350A
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- 239000002131 composite material Substances 0.000 title claims abstract description 64
- 238000004519 manufacturing process Methods 0.000 title claims description 29
- 238000000034 method Methods 0.000 claims abstract description 59
- 239000000463 material Substances 0.000 claims abstract description 50
- 239000000843 powder Substances 0.000 claims abstract description 39
- 238000005245 sintering Methods 0.000 claims abstract description 39
- 239000011812 mixed powder Substances 0.000 claims abstract description 31
- 239000010935 stainless steel Substances 0.000 claims abstract description 31
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 31
- 238000000465 moulding Methods 0.000 claims abstract description 29
- 238000005238 degreasing Methods 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 230000006698 induction Effects 0.000 claims abstract description 13
- 238000002360 preparation method Methods 0.000 claims abstract description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 24
- 239000011230 binding agent Substances 0.000 claims description 13
- 239000000654 additive Substances 0.000 claims description 12
- 229910052799 carbon Inorganic materials 0.000 claims description 12
- 239000010941 cobalt Substances 0.000 claims description 12
- 229910017052 cobalt Inorganic materials 0.000 claims description 12
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 12
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 claims description 12
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 11
- 239000011651 chromium Substances 0.000 claims description 11
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 claims description 11
- 229910003470 tongbaite Inorganic materials 0.000 claims description 11
- INZDTEICWPZYJM-UHFFFAOYSA-N 1-(chloromethyl)-4-[4-(chloromethyl)phenyl]benzene Chemical compound C1=CC(CCl)=CC=C1C1=CC=C(CCl)C=C1 INZDTEICWPZYJM-UHFFFAOYSA-N 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- NFFIWVVINABMKP-UHFFFAOYSA-N methylidynetantalum Chemical compound [Ta]#C NFFIWVVINABMKP-UHFFFAOYSA-N 0.000 claims description 10
- 229910003468 tantalcarbide Inorganic materials 0.000 claims description 10
- 230000000996 additive effect Effects 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 6
- 230000002087 whitening effect Effects 0.000 description 6
- 238000007747 plating Methods 0.000 description 5
- 239000002994 raw material Substances 0.000 description 4
- 230000003749 cleanliness Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 2
- 238000000498 ball milling Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- 229910000997 High-speed steel Inorganic materials 0.000 description 1
- 229910001182 Mo alloy Inorganic materials 0.000 description 1
- QRVBPFUUACXMQU-UHFFFAOYSA-N [Mo].[Fe].[Cr] Chemical compound [Mo].[Fe].[Cr] QRVBPFUUACXMQU-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000788 chromium alloy Substances 0.000 description 1
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 description 1
- BIJOYKCOMBZXAE-UHFFFAOYSA-N chromium iron nickel Chemical compound [Cr].[Fe].[Ni] BIJOYKCOMBZXAE-UHFFFAOYSA-N 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- VAWNDNOTGRTLLU-UHFFFAOYSA-N iron molybdenum nickel Chemical compound [Fe].[Ni].[Mo] VAWNDNOTGRTLLU-UHFFFAOYSA-N 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002887 superconductor Substances 0.000 description 1
Classifications
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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
- B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
-
- 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
- B22F3/02—Compacting only
- B22F3/03—Press-moulding apparatus therefor
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
-
- 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
- B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
- B22F2003/1052—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding assisted by energy absorption enhanced by the coating or powder
-
- 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
- B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
- B22F2003/1053—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding by induction
-
- 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
- B22F2202/00—Treatment under specific physical conditions
- B22F2202/07—Treatment under specific physical conditions by induction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
개시되는 초경합금제 복합소재는, 스테인리스로 이루어진 모재층; 및 초경합금을 포함하며 모재층의 표면에 접합되는 초경합금층;을 포함하되, 초경합금층은 고주파 유도가열을 이용하여 소결된다. 그리고 개시된 초경합금제 복합소재는, 모재층을 형성하는 스테인리스 분말 및 초경합금층을 형성하는 혼합분말을 준비하는 준비공정; 스테리인리스 분말과 혼합분말을 가압 성형시켜 복합소재를 가압 성형하는 가압 성형공정; 복합소재에서 도포된 유지성물질을 제거하는 탈지 및 1차 소결공정; 및 탈지 및 1차 소결공정(S30)을 거친 초경합금층을 고주파 유도가열을 이용하여 소결시키는 2차 소결공정;을 포함해 제조된다. The disclosed cemented carbide composite material includes a base material layer made of stainless steel; And a cemented carbide layer including cemented carbide and bonded to the surface of the base material layer; including, but the cemented carbide layer is sintered using high-frequency induction heating. And the disclosed cemented carbide composite material, a preparation step of preparing a mixed powder to form a stainless steel powder and cemented carbide layer forming a base material layer; A pressure molding process of pressure molding a composite material by pressure molding the stainless powder and the mixed powder; Degreasing and primary sintering process to remove the oil-retaining material applied from the composite material; and a secondary sintering step of sintering the cemented carbide layer that has undergone the degreasing and primary sintering step (S30) by using high-frequency induction heating.
Description
본 발명(Disclosure)은, 초경합금제 복합소재 및 이의 제조방법에 관한 것으로, 상세하게는 스테인리스(Stainless)로 이루어진 모재층의 표면에 기계가공을 통해 형성되는 초경합금층을 고주파 유도가열 방식을 이용해 소결시킨 초경합금제 복합소재 및 이의 제조방법에 관한 것이다.The present invention (Disclosure) relates to a cemented carbide composite material and a manufacturing method thereof, and in detail, a cemented carbide layer formed through mechanical processing on the surface of a base material layer made of stainless is sintered using a high frequency induction heating method It relates to a cemented carbide composite material and a manufacturing method thereof.
여기서는, 본 발명에 관한 배경기술이 제공되며, 이들이 반드시 공지기술을 의미하는 것은 아니다(This section provides background information related to the present disclosure which is not necessarily prior art).Here, background art related to the present invention is provided, and they do not necessarily mean prior art (This section provides background information related to the present disclosure which is not necessarily prior art).
일반적으로, 초경합금은 그 특유의 높은 내마모성 때문에 고속도강, 다이아몬드 복합재 등과 함께 대표적인 공구용 소재로서, 주로 절삭, 절단용 공구, 내마모용 부품, 금형소재 등에 다양하게 사용되고 있으며, 초전도체와 광통신 같은 첨단산업에서도 핵심 소재로서 점차적으로 각광받고 있다.In general, cemented carbide is a representative material for tools along with high-speed steel and diamond composites because of its unique high wear resistance, and is mainly used in various ways such as cutting and cutting tools, wear-resistant parts, and mold materials, and is also used in high-tech industries such as superconductors and optical communications. It is gradually gaining popularity as a key material.
전술한 초경합금은 텅스텐카바이드(WC), 티타늄카바이드(TiC) 등의 분말에 5-10 %의 코발트(Co)를 결합재로 하여 가압 성형한 후에, 소결하는 방식으로 제조되는데, 고속도강보다 높은 고속절삭에 견딜 수 있는 것으로 알려져 있으며, 텅스텐카바이드(WC)와 코발트(Co)의 조성에 따라 주요 물성이 좌우되어 현재 다양한 용도의 제품이 생산되고 있다.The above-mentioned cemented carbide is manufactured by pressing and molding powders such as tungsten carbide (WC) and titanium carbide (TiC) with 5-10% cobalt (Co) as a binder and then sintering. It is known to be able to withstand, and the main physical properties depend on the composition of tungsten carbide (WC) and cobalt (Co), so products for various purposes are currently being produced.
한편, 최근 세계적으로 저탄소 녹색성장 및 그린 재활용 공정과 같은 친환경 공정의 기술개발에 대한 필요성이 대두되면서 도금 업체들은 환경 처리시설을 강화하고 있으며, 이에 따라 공정의 단가가 높아지고 결과적으로 제품의 단가가 상승하는 문제점이 있었다.On the other hand, as the need for technology development of eco-friendly processes such as low-carbon green growth and green recycling processes has recently emerged worldwide, plating companies are strengthening their environmental treatment facilities, thereby increasing the unit cost of the process and consequently the unit price of the product. There was a problem with
일례로, 스테인리스강의 경화를 위한 크롬 도금 시 환경 문제가 발생하고 있으며, 이러한 환경 문제를 해결하기 위해 크롬 도금을 대체할 수 있는 새로운 코팅 공정 기술이 요구되고 있는 실정이다. For example, environmental problems occur during chrome plating for hardening of stainless steel, and in order to solve these environmental problems, a new coating process technology that can replace chrome plating is required.
또한, 일반적인 도금제품에서는 도금품질 상의 결함으로 취급할 문제는 아니지만 표면 백화현상이 발생하는 또 다른 문제점이 있었으며, 이러한 백화현상은 폐쇄적인 반도체 라인의 특성상 분말이나 먼지, 특히 부식생성물(예를 들면, 녹, 백화 등)에 의한 오염을 완전 배제해야 하는 조건에서는 반드시 해결해야 할 필요성이 있다.In addition, in general plating products, there is another problem of surface whitening, which is not a problem to be treated as a defect in plating quality, and this whitening phenomenon is caused by powder or dust, especially corrosion products (eg, rust, whitening, etc.), there is a need to solve it under conditions that must be completely excluded.
본 발명(Disclosure)은, 스테인리스로 이루어진 모재층의 표면에 초경합금층을 소결시킨 초경합금제 복합소재의 제공을 일 목적으로 한다.An object of the present invention (Disclosure) is to provide a cemented carbide composite material in which a cemented carbide layer is sintered on the surface of a base material layer made of stainless steel.
본 발명(Disclosure)은, 스테인리스로 이루어진 모재층 표면에 초경합금층 소결 시 모재층의 변형을 최소화할 수 있게 하는 초경합금제 복합소재의 제조방법의 제공을 일 목적으로 한다. An object of the present invention (Disclosure) is to provide a method for manufacturing a cemented carbide composite material that can minimize the deformation of the base material layer when the cemented carbide layer is sintered on the surface of the base material layer made of stainless steel.
또한, 본 발명이 해결하고자 하는 과제는, 이상에서 언급한 기술적 과제로 제한되지 않으며, 언급되지 않은 또 다른 기술적 과제들은 아래의 기재로부터 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자가 명확하게 이해될 수 있을 것이다.In addition, the problem to be solved by the present invention is not limited to the technical problems mentioned above, and other technical problems not mentioned are clearly understood by those of ordinary skill in the art to which the present invention belongs from the description below. It could be.
여기서는, 본 발명의 전체적인 요약(Summary)이 제공되며, 이것이 본 발명의 외연을 제한하는 것으로 이해되어서는 아니 된다(This section provides a general summary of the disclosure and is not a comprehensive disclosure of its full scope or all of its features).This section provides a general summary of the disclosure and is not a comprehensive disclosure of its full scope or all of its features).
상기한 과제의 해결을 위해, 본 발명을 기술하는 여러 관점들 중 어느 일 관점(aspect)에 따른 초경합금제 복합소재는, 스테인리스로 이루어진 모재층; 및 초경합금을 포함하며 모재층의 표면에 접합되는 초경합금층;을 포함하되, 초경합금층은 고주파 유도가열을 이용하여 소결될 수 있다. In order to solve the above problems, a cemented carbide composite material according to any one of the various aspects describing the present invention, a base layer made of stainless steel; And a cemented carbide layer including cemented carbide and bonded to the surface of the base material layer; including, but the cemented carbide layer can be sintered using high-frequency induction heating.
본 발명의 일 관점(aspect)에 따른 초경합금제 복합소재에서, 초경합금은 텅스텐카바이드(WC), 티타늄카바이드(TiC), 바나듐카바이드(VC) 및 탄탈륨카바이드(TaC) 중에서 선택된 적어도 하나를 포함할 수 있다. In the cemented carbide composite material according to one aspect of the present invention, the cemented carbide may include at least one selected from tungsten carbide (WC), titanium carbide (TiC), vanadium carbide (VC), and tantalum carbide (TaC). .
본 발명의 일 관점(aspect)에 따른 초경합금제 복합소재에서, 상기 초경합금은, 바인더로서 코발트(Co), 니켈(Ni) 및 철(Fe)로 이루어진 군에서 선택된 적어도 어느 하나와, 첨가제로서 크롬카바이드(Cr2C3) 또는 탄소(C) 중 어느 하나를 더 포함할 수 있다. In the cemented carbide composite material according to one aspect of the present invention, the cemented carbide includes at least one selected from the group consisting of cobalt (Co), nickel (Ni), and iron (Fe) as a binder, and chromium carbide as an additive. (Cr 2 C 3 ) or carbon (C) may further include any one.
본 발명을 기술하는 여러 관점들 중 다른 일 관점(aspect)에 따른 초경합금제 복합소재의 제조방법은, 모재층을 형성하는 스테인리스 분말 및 초경합금층을 형성하는 혼합분말을 준비하는 준비공정(S10); 스테리인리스 분말과 혼합분말을 가압 성형시켜 복합소재를 가압 성형하는 가압 성형공정(S20); 복합소재에서 도포된 유지성물질을 제거하는 탈지 및 1차 소결공정(S30); 및 탈지 및 1차 소결공정(S30)을 거친 초경합금층을 고주파 유도가열을 이용하여 소결시키는 2차 소결공정(S40);을 포함할 수 있다. Method for manufacturing a cemented carbide composite material according to another aspect (aspect) of the various aspects describing the present invention, a preparation step of preparing a mixed powder to form a stainless steel powder and cemented carbide layer forming a base material layer (S10); A pressure molding step (S20) of pressure molding a composite material by pressure molding the stainless powder and the mixed powder; Degreasing and primary sintering process (S30) to remove the oil-retaining material applied from the composite material; and a secondary sintering step (S40) of sintering the cemented carbide layer that has undergone the degreasing and primary sintering step (S30) by using high frequency induction heating.
본 발명의 다른 일 관점(aspect)에 따른 초경합금제 복합소재의 제조방법에서, 준비공정(S10)의 혼합분말은, 초경분말, 바인더 분말 및 첨가제가 혼합되어 제공되되, 초경분말은,텅스텐카바이드(WC), 티타늄카바이드(TiC), 바나듐카바이드(VC) 및 탄탈륨카바이드(TaC) 중에서 선택된 적어도 하나를 포함하고, 바인더 분말은, 코발트(Co), 니켈(Ni) 및 철(Fe)로 이루어진 군에서 선택된 적어도 어느 하나를 포함하며, 첨가제는 분말화된 크롬카바이드(Cr2C3) 또는 탄소(C) 중 어느 하나를 포함할 수 있다. In the method for manufacturing a cemented carbide composite material according to another aspect of the present invention, the mixed powder of the preparation step (S10) is provided by mixing cemented carbide powder, binder powder, and additives, the cemented carbide powder, tungsten carbide ( WC), titanium carbide (TiC), vanadium carbide (VC), and tantalum carbide (TaC), and the binder powder is from the group consisting of cobalt (Co), nickel (Ni), and iron (Fe). It includes at least one selected, and the additive may include any one of powdered chromium carbide (Cr 2 C 3 ) or carbon (C).
본 발명의 다른 일 관점(aspect)에 따른 초경합금제 복합소재의 제조방법에서, 코발트(Co) 또는 니켈(Ni)인 혼합분말 전체 중량에 대해 1~20 중량부로 혼합될 수 있다. In the method for manufacturing a cemented carbide composite material according to another aspect of the present invention, cobalt (Co) or nickel (Ni) may be mixed in an amount of 1 to 20 parts by weight based on the total weight of the mixed powder.
본 발명의 다른 일 관점(aspect)에 따른 초경합금제 복합소재의 제조방법에서, 철(Fe)은 혼합분말 전체 중량에 대해 1~30 중량부로 혼합될 수 있다. In the method for manufacturing a cemented carbide composite material according to another aspect of the present invention, iron (Fe) may be mixed in an amount of 1 to 30 parts by weight based on the total weight of the mixed powder.
본 발명의 다른 일 관점(aspect)에 따른 초경합금제 복합소재의 제조방법에서, 크롬카바이드(Cr2C3)는 혼합분말 전체 중량에 대해 0.1~1 중량부로 혼합될 수 있다. In the method for manufacturing a cemented carbide composite material according to another aspect of the present invention, chromium carbide (Cr 2 C 3 ) may be mixed in an amount of 0.1 to 1 part by weight based on the total weight of the mixed powder.
본 발명의 다른 일 관점(aspect)에 따른 초경합금제 복합소재의 제조방법에서, 탄소(C)는 혼합분말 전체 중량에 대해 0.1~5 중량부로 혼합될 수 있다. In the method for manufacturing a cemented carbide composite material according to another aspect of the present invention, carbon (C) may be mixed in an amount of 0.1 to 5 parts by weight based on the total weight of the mixed powder.
본 발명의 다른 일 관점(aspect)에 따른 초경합금제 복합소재의 제조방법에서, 가압 성형공정(S20)은, 성형용 금형에 스테인리스 강 분말을 충진시키고, 충진된 스테인리스 강 분말의 상부 측으로 혼합분말을 충진시킨 상태 하에서 10~100㎫의 압력으로 펀치를 성형용 금형 측으로 하강시켜 스테인리스로 이루어진 모재층 및 모재층의 표면에 접합된 초경합금층을 가지는 복합소재가 제조되게 할 수 있다. In the manufacturing method of the cemented carbide composite material according to another aspect of the present invention, the pressure forming step (S20) is filled with stainless steel powder in a molding mold, and the mixed powder toward the upper side of the filled stainless steel powder. Under the filled state, the punch is lowered toward the mold for forming at a pressure of 10 to 100 MPa to produce a composite material having a base material layer made of stainless steel and a cemented carbide layer bonded to the surface of the base material layer.
본 발명의 다른 일 관점(aspect)에 따른 초경합금제 복합소재의 제조방법에서, 탈지 및 1차 소결공정(S30)에서, 탈지는 진공 분위기 하에서 이루어지되, 탈지는 복합소재를 진공로 내부에 장입시킨 후, 진공로 내부의 온도를 650~750℃로 승온시킨 상태 하에서 30~120분 동안 수행될 수 있다. In the manufacturing method of the cemented carbide composite material according to another aspect of the present invention, in the degreasing and primary sintering process (S30), the degreasing is performed under a vacuum atmosphere, and the degreasing composite material is charged into the vacuum furnace After that, it may be performed for 30 to 120 minutes under a condition in which the temperature inside the vacuum furnace is raised to 650 to 750 ° C.
본 발명의 다른 일 관점(aspect)에 따른 초경합금제 복합소재의 제조방법에서, 탈지 및 1차 소결공정(S30)에서, 1차 소결은 진공 분위기 하에서 이루어지되, 1차 소결은 1000~1350℃의 온도에서 30~120분 동안 수행될 수 있다. In the manufacturing method of the cemented carbide composite material according to another aspect of the present invention, in the degreasing and primary sintering process (S30), the primary sintering is performed in a vacuum atmosphere, but the primary sintering is performed at 1000 to 1350 ° C. temperature for 30 to 120 minutes.
본 발명의 다른 일 관점(aspect)에 따른 초경합금제 복합소재의 제조방법에서, 2차 소결공정(S40)에서는, 초경합금층이 유도전류에 의해 1200~1500℃의 온도로 가열되면서 10~600초 동안 수행될 수 있다. In the method for manufacturing a cemented carbide composite material according to another aspect of the present invention, in the secondary sintering step (S40), the cemented carbide layer is heated to a temperature of 1200 to 1500 ° C. by an induced current for 10 to 600 seconds can be performed
본 발명에 의하면, 스테인리스로 이루어진 모재층의 표면에 초경합금층이 소결 코팅되기 때문에 종래와 같은 환경문제를 해결할 수 있을 뿐만 아니라 백화현상을 방지할 수 있게 하는 효과를 제공할 수 있게 된다.According to the present invention, since the cemented carbide layer is sintered and coated on the surface of the base material layer made of stainless steel, it is possible to provide an effect of preventing whitening as well as solving conventional environmental problems.
본 발명에 의하면, 고주파 유도가열 방식을 이용해 초경합금층을 스테인리스로 이루어진 모재층에 소결시키기 때문에 소결 온도가 상대적으로 낮은 모재층의 변형을 방지할 수 있으며, 이로 인해 내마모성이 우수한 복합소재를 제공할 수 있게 하는 효과를 제공할 수 있게 된다.According to the present invention, since the cemented carbide layer is sintered to the base material layer made of stainless steel using a high-frequency induction heating method, deformation of the base material layer having a relatively low sintering temperature can be prevented, thereby providing a composite material with excellent wear resistance. be able to provide the desired effect.
따라서, 본 발명에 의해 제조된 복합소재는 청정도, 정밀도 및 내마모성을 요구하는 디스플레이, 반도체 및 자동차 부품 제조에 효율적으로 적용할 수 있는 또 다른 효과를 제공할 수 있게 된다.Therefore, the composite material manufactured according to the present invention can provide another effect that can be efficiently applied to manufacturing displays, semiconductors, and automobile parts requiring cleanliness, precision, and wear resistance.
이하, 본 발명에 따른 초경합금제 복합소재 및 이의 제조방법을 구현한 실시형태를 도면을 참조하여 자세히 설명한다.Hereinafter, an embodiment embodying a cemented carbide composite material and a manufacturing method thereof according to the present invention will be described in detail with reference to the drawings.
다만, 본 발명의 본질적인(intrinsic) 기술적 사상은 이하에서 설명되는 실시형태에 의해 그 실시 가능 형태가 제한된다고 할 수는 없고, 본 발명의 본질적인(intrinsic) 기술적 사상에 기초하여 통상의 기술자에 의해 이하에서 설명되는 실시형태를 치환 또는 변경의 방법으로 용이하게 제안될 수 있는 범위를 포섭함을 밝힌다. However, the essential (intrinsic) technical idea of the present invention cannot be said to be limited by the embodiments described below, and based on the essential (intrinsic) technical idea of the present invention, a person skilled in the art below It is revealed that the embodiments described in include the range that can be easily proposed as a method of substitution or change.
또한, 이하에서 사용되는 용어는 설명의 편의를 위하여 선택한 것이므로, 본 발명의 본질적인(intrinsic) 기술적 사상을 파악하는 데 있어서, 사전적 의미에 제한되지 않고 본 발명의 기술적 사상에 부합되는 의미로 적절히 해석되어야 할 것이다. In addition, since the terms used below are selected for convenience of description, in grasping the essential (intrinsic) technical idea of the present invention, they are not limited to the dictionary meaning and are appropriately interpreted in a meaning consistent with the technical idea of the present invention. It should be.
초경합금제 복합소재Cemented carbide composite material
본 발명에 따른 초경합금제 복합소재는, 스테인리스로 이루어진 모재층과, 초경합금을 포함하며 모재층의 표면에 접합되는 초경합금층을 포함한다.The cemented carbide composite material according to the present invention includes a base material layer made of stainless steel, and a cemented carbide layer including cemented carbide and bonded to the surface of the base material layer.
여기서, 초경합금은 기계가공을 통해 모재층의 표면에 초경합금층을 형성하게 되며, 초경합금층은 모재층의 변형을 최소화할 수 있도록 모재층에 비가압 소결된다.Here, the cemented carbide layer is formed on the surface of the base material layer through machining, and the cemented carbide layer is non-pressure sintered to the base material layer to minimize deformation of the base material layer.
바람직하게는, 초경합금은 고주파 유도가열을 통하여 모재층에 소결되어 초경합금층을 형성한다. Preferably, the cemented carbide layer is sintered to the base material layer through high-frequency induction heating to form a cemented carbide layer.
즉, 본 발명에 따른 초경합금제 복합소재의 초경합금층은 주울 열을 발생시키는 유도전류(와전류)의 특징 및 물체의 표면 주위에 강하게 흐르려고 하면서 물체의 내부로는 약하게 흐르려는 유도전류의 특징을 이용해 모재층의 표면 소결된다.That is, the cemented carbide layer of the cemented carbide composite material according to the present invention uses the characteristics of the induced current (eddy current) that generates Joule heat and the characteristic of the induced current that tends to flow strongly around the surface of the object while weakly flowing into the inside of the object. The surface of the base material layer is sintered.
이에 의해, 본 발명에 따른 초경합금제 복합소재는 모재층의 변형을 최소화하면서 모재층의 표면에 초경합금층을 형성하게 된다.Accordingly, the cemented carbide composite material according to the present invention forms a cemented carbide layer on the surface of the base material layer while minimizing deformation of the base material layer.
초경합금제 복합소재의 제조방법Manufacturing method of cemented carbide composite material
본 발명에 따른 초경합금제 복합소재는, 준비공정(S10), 가압 성형공정(S20), 탈지 및 1차 소결공정(S30) 및 2차 소결공정(S40)을 거쳐 제조된다. The cemented carbide composite material according to the present invention is manufactured through a preparation process (S10), a pressure molding process (S20), a degreasing and primary sintering process (S30), and a secondary sintering process (S40).
(S10) 준비공정(S10) Preparation process
준비공정(S10)은 모재층 및 초경합금층을 형성하는 재료를 준비하는 공정이다. The preparation step (S10) is a step of preparing materials for forming the base material layer and the cemented carbide layer.
모재층의 원료로는 내식성 및 강도가 우수한 스테인리스 강(SUS; stainless steel) 분말이 준비된다.As a raw material for the base material layer, stainless steel (SUS) powder having excellent corrosion resistance and strength is prepared.
스테인리스 강 분말로는 철-크롬 합금, 철-크롬-몰리브덴 합금, 철-몰리브데늄-니켈 합금, 철-크롬-니켈 합금 등 다양한 종류의 스테인리스 강 분말이 준비될 수 있다.As the stainless steel powder, various types of stainless steel powder such as an iron-chromium alloy, an iron-chromium-molybdenum alloy, an iron-molybdenum-nickel alloy, and an iron-chromium-nickel alloy may be prepared.
초경합금층의 원료로는 경도, 강도가 높고 내마모성이 우수한 초경분말에 바인더분말 및 첨가제를 혼합된 혼합분말이 준비된다.As a raw material for the cemented carbide layer, a mixed powder obtained by mixing cemented carbide powder having high hardness and strength and excellent wear resistance with binder powder and additives is prepared.
초경분말로는 텅스텐카바이드(WC), 티타늄카바이드(TiC), 바나듐카바이드(VC) 및 탄탈륨카바이드(TaC) 중에서 선택된 적어도 하나를 포함한다.The cemented carbide powder includes at least one selected from tungsten carbide (WC), titanium carbide (TiC), vanadium carbide (VC), and tantalum carbide (TaC).
바인더 분말로는 코발트(Co), 니켈(Ni) 및 철(Fe)로 이루어진 군에서 선택된 적어도 어느 하나 일 수 있으며, 바인더 분말은 혼합분말 전체 중량에 대해 1~30 중량부로 혼합된다.The binder powder may be at least one selected from the group consisting of cobalt (Co), nickel (Ni), and iron (Fe), and the binder powder is mixed in an amount of 1 to 30 parts by weight based on the total weight of the mixed powder.
여기서, 바인더 분말이 코발트(Co) 및 니켈(Ni)인 경우 혼합분말 전체 중량에 대해 1~20 중량부로 혼합되며, 바인더 분말이 철(Fe)인 경우 혼합분말 전체 중량에 대해 1~30 중량부로 혼합된다.Here, when the binder powder is cobalt (Co) and nickel (Ni), it is mixed in 1 to 20 parts by weight based on the total weight of the mixed powder, and when the binder powder is iron (Fe), it is mixed in 1 to 30 parts by weight based on the total weight of the mixed powder. mixed
한편, 첨가제로는 분말화된 크롬카바이드(Cr2C3) 또는 탄소(C) 중 어느 하나 일 수 있으며, 첨가제는 혼합분말 전체 중량에 대해 0.1~5 중량부로 혼합된다.Meanwhile, the additive may be any one of powdered chromium carbide (Cr 2 C 3 ) or carbon (C), and the additive is mixed in an amount of 0.1 to 5 parts by weight based on the total weight of the mixed powder.
이때, 첨가제가 크롬카바이드(Cr2C3)인 경우 혼합분말 전체 중량에 대해 0.1~1 중량부로 혼합되고, 첨가제가 탄소(C)인 경우 혼합분말 전체 중량에 대해 0.1~5 중량부로 혼합된다.At this time, when the additive is chromium carbide (Cr 2 C 3 ), it is mixed in an amount of 0.1 to 1 part by weight based on the total weight of the mixed powder, and when the additive is carbon (C), it is mixed in an amount of 0.1 to 5 parts by weight based on the total weight of the mixed powder.
일례로, 혼합분말은 텅스텐카바이드(WC), 코발트(Co), 크롬카바이드(Cr2C3) 및 탄소(C)의 혼합이거나, 텅스텐카바이드(WC), 철(Fe), 크롬카바이드(Cr2C3) 및 탄소(C)의 혼합일 수 있다. 또한 혼합분말은 텅스텐카바이드(WC), 코발트(Co), 철(Fe), 크롬카바이드(Cr2C3) 및 탄소(C)의 혼합일 수 있다. For example, the mixed powder is a mixture of tungsten carbide (WC), cobalt (Co), chromium carbide (Cr 2 C 3 ) and carbon (C), or tungsten carbide (WC), iron (Fe), chromium carbide (Cr 2 C 3 ) and carbon (C). In addition, the mixed powder may be a mixture of tungsten carbide (WC), cobalt (Co), iron (Fe), chromium carbide (Cr 2 C 3 ) and carbon (C).
또한, 초경분말, 바인더분말 및 첨가제는 볼 밀링 공정을 통해 혼합분말로 제조될 수 있으며, 본 발명에서는 볼 밀링 공정을 특별히 한정하지는 않는다.In addition, the cemented carbide powder, binder powder, and additives may be prepared as a mixed powder through a ball milling process, and the ball milling process is not particularly limited in the present invention.
(S20) 가압 성형공정(S20) Press molding process
가압 성형공정(S20)은 준비공정(S10)에서 준비된 스테리인리스 분말과 혼합분말을 가압 성형시켜 복합소재를 가압 성형하는 공정이다.The pressure molding step (S20) is a step of pressure molding the composite material by pressure molding the stainless powder and the mixed powder prepared in the preparation step (S10).
가압 성형공정(20)은 일례로 통상의 분말 성형 프레스를 이용해 수행될 수 있다. The pressure molding process 20 may be performed using, for example, a conventional powder molding press.
즉, 분말 성형 프레스에 제공되는 성형용 금형에 모재층의 원료인 스테인리스 강 분말을 충진시키고, 충진된 스테인리스 강 분말의 상부 측으로 초경합금층의 원료인 혼합분말을 충진시킨 상태 하에서 펀치를 성형용 금형 측으로 하강시켜 복합소재를 제조한다. That is, in a state in which the stainless steel powder, which is a raw material of the base material layer, is filled in the molding mold provided in the powder molding press, and the mixed powder, which is a raw material of the cemented carbide layer, is filled to the upper side of the filled stainless steel powder, the punch is moved toward the molding mold side. down to produce a composite material.
이때, 하강하는 펀치는 대략 10~100㎫의 압력으로 성형용 금형에 충진된 스테인리스 강 분말 및 혼합분말을 가압 성형시키는데, 이에 의해 스테인리스로 이루어진 모재층 및 모재층의 표면에 접합된 초경합금층을 가지는 복합소재가 제조된다.At this time, the descending punch presses and molds the stainless steel powder and mixed powder filled in the molding mold at a pressure of about 10 to 100 MPa, thereby having a base material layer made of stainless steel and a cemented carbide layer bonded to the surface of the base material layer. Composites are made.
바람직하게는, 스테인리스 강 분말 또는 성형용 금형 상에는 가압 성형 시 스테인리스 강의 성형밀도를 높일 수 있도록 윤활제가 혼합 또는 도포될 수 있다.Preferably, a lubricant may be mixed or applied on the stainless steel powder or the molding mold to increase the molding density of the stainless steel during pressure molding.
(S30) 탈지 및 1차 소결공정(S30) Degreasing and primary sintering process
탈지 및 1차 소결공정(S30)은 가압 성형공정(S20)에서 제조된 복합소재의 표면에 도포된 유지성물질을 제거하는 공정이다.The degreasing and primary sintering process (S30) is a process of removing the oil-retaining material applied to the surface of the composite material manufactured in the pressure molding process (S20).
탈지공정은 진공 분위기 하에서 열분해 방식으로 수행된다. 즉 탈지공정은 가압 성형공정(S20)에서 제조된 복합소재를 진공로 내부에 장입시킨 후, 진공로 내부의 온도를 650~750℃로 승온시킨 상태 하에서 30~120분 동안 수행된다.The degreasing process is performed by pyrolysis in a vacuum atmosphere. That is, the degreasing process is performed for 30 to 120 minutes under a state in which the temperature inside the vacuum furnace is raised to 650 to 750 ° C. after charging the composite material manufactured in the pressure forming step (S20) into the vacuum furnace.
탈지공정에서, 진공로의 내부의 온도는 일정한 속도로 승온시키는 것이 바람직하며, 필요에 따라 중간에 승온을 일시 중지하고 고정 온도를 유지하는 과정을 반복 수행해 진공로의 온도를 전술한 650~750℃까지 승온시키는 것이 바람직하다. In the degreasing process, it is preferable to raise the temperature of the inside of the vacuum furnace at a constant rate, and if necessary, the process of temporarily stopping the temperature increase in the middle and maintaining a fixed temperature is repeated to raise the temperature of the vacuum furnace to the above-mentioned 650 ~ 750 ℃ It is desirable to raise the temperature to
한편, 1차 소결공정은 마찬가지로 진공 분위기 하에서 이루어지되, 별도의 소결로 또는 탈지 공정이 완료된 진공로 내에서 수행될 수 있는데, 1차 소결공정은 1000~1350℃의 온도에서 30~120분 동안 수행된다.On the other hand, the primary sintering process is similarly performed under a vacuum atmosphere, but may be performed in a separate sintering furnace or in a vacuum furnace in which the degreasing process is completed. do.
이렇게 복합소재를 1차 소결함으로써, 탈지공정에서 제거되지 못한 유지성물질을 완전하게 제거될 수 있다.By performing the primary sintering of the composite material in this way, the oleaginous material that could not be removed in the degreasing process can be completely removed.
(S40) 2차 소결공정(S40) 2nd sintering process
2차 소결공정(S40)은 탈지 및 1차 소결공정(S30)을 거친 복합소재의 모재층의 변형을 최소화하면서 초경합금층의 밀착력 및 모재층과의 접착력을 높이는 공정이다. The secondary sintering step (S40) is a process of increasing the adhesion of the cemented carbide layer and the adhesive force with the base material layer while minimizing deformation of the base material layer of the composite material that has undergone the degreasing and primary sintering step (S30).
2차 소결공정(S40)은 통상의 고주파 유도가열을 통하여 수행된다. 즉 2차 소결공정(S40)에서는 유도전류를 초경합금층에 인가해 주울 열을 발생시켜 초경합금층을 소결시키는데, 이때, 초경합금층은 유도전류에 의해 1200~1500℃의 온도로 가열되면서 10~600초 동안 소결된다.The secondary sintering process (S40) is performed through conventional high-frequency induction heating. That is, in the secondary sintering process (S40), an induced current is applied to the cemented carbide layer to generate Joule heat to sinter the cemented carbide layer. sintered during
이렇게 2차 소결공정(S40)에서는 고주파 유도가열을 이용하므로, 복합소재의 표면 부근, 즉 초경합금층의 두께에 맞추어 유도 전류의 침투 깊이를 조절할 수 있을 뿐만 아니라 초경합금층에 발생하는 와전류에 의해 초경합금층 만이 직접 가열되기 때문에 모재층의 변형을 최소화하면서 초경합금층을 소결시킬 수 있다.Since high-frequency induction heating is used in the secondary sintering process (S40), the depth of penetration of the induced current can be adjusted according to the thickness of the cemented carbide layer near the surface of the composite material, and the cemented carbide layer by the eddy current generated in the cemented carbide layer Since only the carbide layer is directly heated, the cemented carbide layer can be sintered while minimizing deformation of the base material layer.
본 발명에 의하면, 스테인리스로 이루어진 모재층의 표면에 초경합금층이 소결 코팅되기 때문에 종래와 같은 환경문제를 해결할 수 있을 뿐만 아니라 백화현상을 방지할 수 있게 하는 효과를 제공할 수 있게 된다.According to the present invention, since the cemented carbide layer is sintered and coated on the surface of the base material layer made of stainless steel, it is possible to provide an effect of preventing whitening as well as solving conventional environmental problems.
본 발명에 의하면, 고주파 유도가열 방식을 이용해 초경합금층을 스테인리스로 이루어진 모재층에 소결시키기 때문에 소결 온도가 상대적으로 낮은 모재층의 변형을 방지할 수 있으며, 이로 인해 내마모성이 우수한 복합소재를 제공할 수 있게 하는 효과를 제공할 수 있게 된다.According to the present invention, since the cemented carbide layer is sintered to the base material layer made of stainless steel using a high-frequency induction heating method, deformation of the base material layer having a relatively low sintering temperature can be prevented, thereby providing a composite material with excellent wear resistance. be able to provide the desired effect.
따라서, 본 발명에 의해 제조된 복합소재는 청정도, 정밀도 및 내마모성을 요구하는 디스플레이, 반도체 및 자동차 부품 제조에 효율적으로 적용할 수 있는 또 다른 효과를 제공할 수 있게 된다.Therefore, the composite material manufactured according to the present invention can provide another effect that can be efficiently applied to manufacturing displays, semiconductors, and automobile parts requiring cleanliness, precision, and wear resistance.
이와 같은 본 발명은, 스테인리스로 이루어진 모재층의 표면에 초경합금층이 소결 코팅되기 때문에 종래와 같은 환경문제를 해결할 수 있을 뿐만 아니라 백화현상을 방지할 수 있게 한다. As described above, since the cemented carbide layer is sintered and coated on the surface of the base material layer made of stainless steel, it is possible to solve environmental problems as in the prior art and to prevent whitening.
또한 본 발명은, 고주파 유도가열 방식을 이용해 초경합금층을 스테인리스로 이루어진 모재층에 소결시키기 때문에 소결 온도가 상대적으로 낮은 모재층의 변형을 방지할 수 있으며, 이로 인해 내마모성이 우수한 복합소재를 제공할 수 있게 한다. In addition, since the present invention uses a high-frequency induction heating method to sinter the cemented carbide layer to the base material layer made of stainless steel, it is possible to prevent deformation of the base material layer having a relatively low sintering temperature, thereby providing a composite material with excellent wear resistance. let it be
따라서, 본 발명에 의해 제조된 복합소재는 청정도, 정밀도 및 내마모성을 요구하는 디스플레이, 반도체 및 자동차 부품 제조에 효율적으로 적용할 수 있다. Therefore, the composite material manufactured according to the present invention can be efficiently applied to manufacturing displays, semiconductors, and automobile parts that require cleanliness, precision, and wear resistance.
Claims (13)
초경합금을 포함하며 모재층의 표면에 접합되는 초경합금층;을 포함하되,
상기 초경합금층은 고주파 유도가열을 이용하여 소결되는 초경합금제 복합소재.
Base layer made of stainless steel; and
A cemented carbide layer including cemented carbide and bonded to the surface of the base material layer; including,
The cemented carbide layer is a cemented carbide composite material that is sintered using high-frequency induction heating.
상기 초경합금은 텅스텐카바이드(WC), 티타늄카바이드(TiC), 바나듐카바이드(VC) 및 탄탈륨카바이드(TaC) 중에서 선택된 적어도 하나를 포함하는 초경합금제 복합소재.
The method of claim 1,
The cemented carbide composite material comprising at least one selected from tungsten carbide (WC), titanium carbide (TiC), vanadium carbide (VC) and tantalum carbide (TaC).
상기 초경합금은,
바인더로서 코발트(Co), 니켈(Ni) 및 철(Fe)로 이루어진 군에서 선택된 적어도 어느 하나와, 첨가제로서 크롬카바이드(Cr2C3) 또는 탄소(C) 중 어느 하나를 더 포함하는 초경합금제 복합소재.
The method of claim 2,
The cemented carbide,
A cemented carbide agent further comprising at least one selected from the group consisting of cobalt (Co), nickel (Ni), and iron (Fe) as a binder, and any one of chromium carbide (Cr 2 C 3 ) or carbon (C) as an additive. composite material.
상기 스테리인리스 분말과 상기 혼합분말을 가압 성형시켜 복합소재를 가압 성형하는 가압 성형공정(S20);
상기 복합소재에서 도포된 유지성물질을 제거하는 탈지 및 1차 소결공정(S30); 및
상기 탈지 및 1차 소결공정(S30)을 거친 상기 초경합금층을 고주파 유도가열을 이용하여 소결시키는 2차 소결공정(S40);을 포함하는 초경합금제 복합소재의 제조방법.
A preparation step (S10) of preparing a mixed powder forming a stainless steel powder and a cemented carbide layer forming a base material layer;
A pressure molding step (S20) of pressure molding the composite material by pressure molding the stainless powder and the mixed powder;
A degreasing and primary sintering step (S30) of removing the oil-retaining material applied from the composite material; and
A method for producing a cemented carbide composite material comprising a; secondary sintering step (S40) of sintering the cemented carbide layer after the degreasing and primary sintering step (S30) by using high frequency induction heating.
상기 준비공정(S10)의 상기 혼합분말은,
초경분말, 바인더 분말 및 첨가제가 혼합되어 제공되되,
상기 초경분말은,텅스텐카바이드(WC), 티타늄카바이드(TiC), 바나듐카바이드(VC) 및 탄탈륨카바이드(TaC) 중에서 선택된 적어도 하나를 포함하고,
상기 바인더 분말은, 코발트(Co), 니켈(Ni) 및 철(Fe)로 이루어진 군에서 선택된 적어도 어느 하나를 포함하며,
상기 첨가제는 분말화된 크롬카바이드(Cr2C3) 또는 탄소(C) 중 어느 하나를 포함하는 초경합금제 복합소재의 제조방법.
The method of claim 4,
The mixed powder of the preparation step (S10),
Carbide powder, binder powder and additives are mixed and provided,
The cemented carbide powder includes at least one selected from tungsten carbide (WC), titanium carbide (TiC), vanadium carbide (VC) and tantalum carbide (TaC),
The binder powder includes at least one selected from the group consisting of cobalt (Co), nickel (Ni), and iron (Fe),
The additive is a method for producing a cemented carbide composite material containing any one of powdered chromium carbide (Cr 2 C 3 ) or carbon (C).
상기 코발트(Co) 또는 상기 니켈(Ni)인 상기 혼합분말 전체 중량에 대해 1~20 중량부로 혼합되는 초경합금제 복합소재의 제조방법.
The method of claim 5,
Method for producing a cemented carbide composite material mixed with 1 to 20 parts by weight based on the total weight of the mixed powder of the cobalt (Co) or the nickel (Ni).
상기 철(Fe)은 상기 혼합분말 전체 중량에 대해 1~30 중량부로 혼합되는 초경합금제 복합소재의 제조방법.
The method of claim 5,
The iron (Fe) is a method for producing a cemented carbide composite material mixed with 1 to 30 parts by weight based on the total weight of the mixed powder.
상기 크롬카바이드(Cr2C3)는 상기 혼합분말 전체 중량에 대해 0.1~1 중량부로 혼합되는 초경합금제 복합소재의 제조방법.
The method of claim 5,
The chromium carbide (Cr 2 C 3 ) is a method for producing a cemented carbide composite material mixed with 0.1 to 1 part by weight based on the total weight of the mixed powder.
상기 탄소(C)는 상기 혼합분말 전체 중량에 대해 0.1~5 중량부로 혼합되는 초경합금제 복합소재의 제조방법.
The method of claim 5,
The carbon (C) is a method for producing a cemented carbide composite material mixed with 0.1 to 5 parts by weight based on the total weight of the mixed powder.
상기 가압 성형공정(S20)은,
성형용 금형에 상기 스테인리스 강 분말을 충진시키고, 충진된 상기 스테인리스 강 분말의 상부 측으로 상기 혼합분말을 충진시킨 상태 하에서 10~100㎫의 압력으로 펀치를 상기 성형용 금형 측으로 하강시켜 스테인리스로 이루어진 상기 모재층 및 상기 모재층의 표면에 접합된 상기 초경합금층을 가지는 상기 복합소재가 제조되게 하는 초경합금제 복합소재의 제조방법.
The method of claim 4,
The pressure molding process (S20),
The stainless steel powder is filled in a mold for molding, and the base material made of stainless steel is lowered to the mold for molding with a pressure of 10 to 100 MPa under a state in which the mixed powder is filled with the upper side of the filled stainless steel powder. A method for manufacturing a cemented carbide composite material having a layer and the cemented carbide layer bonded to the surface of the base material layer.
상기 탈지 및 1차 소결공정(S30)에서,
상기 탈지는 진공 분위기 하에서 이루어지되,
상기 탈지는 상기 복합소재를 진공로 내부에 장입시킨 후, 상기 진공로 내부의 온도를 650~750℃로 승온시킨 상태 하에서 30~120분 동안 수행되는 초경합금제 복합소재의 제조방법.
The method of claim 4,
In the degreasing and primary sintering process (S30),
The degreasing is performed under a vacuum atmosphere,
Method for producing a cemented carbide composite material, which is performed for 30 to 120 minutes under a state in which the temperature inside the vacuum furnace is raised to 650 to 750 ° C. after charging the composite material into the vacuum furnace.
상기 탈지 및 1차 소결공정(S30)에서,
상기 1차 소결은 진공 분위기 하에서 이루어지되,
상기 1차 소결은 1000~1350℃의 온도에서 30~120분 동안 수행되는 초경합금제 복합소재의 제조방법.
The method of claim 4,
In the degreasing and primary sintering process (S30),
The primary sintering is performed under a vacuum atmosphere,
The primary sintering is a method for producing a cemented carbide composite material performed at a temperature of 1000 to 1350 ° C. for 30 to 120 minutes.
상기 2차 소결공정(S40)에서는,
상기 초경합금층이 유도전류에 의해 1200~1500℃의 온도로 가열되면서 10~600초 동안 수행되는 초경합금제 복합소재의 제조방법.
The method of claim 4,
In the secondary sintering step (S40),
Method for producing a cemented carbide composite material performed for 10 to 600 seconds while the cemented carbide layer is heated to a temperature of 1200 to 1500 ° C. by an induced current.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070029456A (en) | 2005-09-09 | 2007-03-14 | 학교법인 포항공과대학교 | Surface composite and fabrication method of the same |
| KR101425952B1 (en) | 2012-04-03 | 2014-08-05 | (주)하이엠시 | Low Binder Sintered Carbides and its Manufacturing Method |
| KR102314870B1 (en) | 2020-09-04 | 2021-10-18 | 충북대학교 산학협력단 | Complex material and preparing methods thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070029456A (en) | 2005-09-09 | 2007-03-14 | 학교법인 포항공과대학교 | Surface composite and fabrication method of the same |
| KR101425952B1 (en) | 2012-04-03 | 2014-08-05 | (주)하이엠시 | Low Binder Sintered Carbides and its Manufacturing Method |
| KR102314870B1 (en) | 2020-09-04 | 2021-10-18 | 충북대학교 산학협력단 | Complex material and preparing methods thereof |
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