KR19990068529A - Metal mold and manufacture method - Google Patents
Metal mold and manufacture method Download PDFInfo
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- KR19990068529A KR19990068529A KR1019990019873A KR19990019873A KR19990068529A KR 19990068529 A KR19990068529 A KR 19990068529A KR 1019990019873 A KR1019990019873 A KR 1019990019873A KR 19990019873 A KR19990019873 A KR 19990019873A KR 19990068529 A KR19990068529 A KR 19990068529A
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- South Korea
- Prior art keywords
- mold
- coating
- tin
- layer
- manufacturing
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title abstract description 14
- 229910052751 metal Inorganic materials 0.000 title abstract description 5
- 239000002184 metal Substances 0.000 title abstract description 5
- 238000000576 coating method Methods 0.000 claims abstract description 50
- 239000011248 coating agent Substances 0.000 claims abstract description 46
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 238000012545 processing Methods 0.000 claims abstract description 14
- 229910052718 tin Inorganic materials 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000003754 machining Methods 0.000 claims abstract description 11
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 10
- 238000005496 tempering Methods 0.000 claims abstract description 8
- 238000002347 injection Methods 0.000 claims abstract description 7
- 239000007924 injection Substances 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims abstract description 7
- 238000005520 cutting process Methods 0.000 claims abstract description 6
- 238000010791 quenching Methods 0.000 claims abstract description 6
- 230000000171 quenching effect Effects 0.000 claims abstract description 6
- 229910001128 Sn alloy Inorganic materials 0.000 claims abstract description 5
- 238000007689 inspection Methods 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 238000005498 polishing Methods 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 239000010410 layer Substances 0.000 abstract description 21
- 239000011247 coating layer Substances 0.000 abstract description 7
- 230000007547 defect Effects 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 8
- 238000000465 moulding Methods 0.000 description 4
- 239000003302 ferromagnetic material Substances 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/40—Coatings including alternating layers following a pattern, a periodic or defined repetition
- C23C28/42—Coatings including alternating layers following a pattern, a periodic or defined repetition characterized by the composition of the alternating layers
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/02—Pretreatment of the material to be coated
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
- C23C14/16—Metallic material, boron or silicon on metallic substrates or on substrates of boron or silicon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/24—Vacuum evaporation
- C23C14/32—Vacuum evaporation by explosion; by evaporation and subsequent ionisation of the vapours, e.g. ion-plating
- C23C14/325—Electric arc evaporation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
- B29C2033/385—Manufacturing moulds, e.g. shaping the mould surface by machining by laminating a plurality of layers
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
본 발명은 다층코팅면을 갖는 금형 및 그 제조방법에 관한 것으로,The present invention relates to a mold having a multi-layer coating surface and a manufacturing method thereof.
본 발명의 목적은 금형의 표면에 다수코팅층을 구성시켜, 금형의 수명을 향상시킴은 물론 불량률을 최소화하여 생산효율 및 제조원가를 절감할 수 있으며, 다수번에 걸친 열처리로 코팅층의 형성시 금형의 상태변형을 방지토록 한 다수코팅면을 갖는 금형 및 그 제조방법을 제공함에 있다.An object of the present invention is to form a plurality of coating layer on the surface of the mold, to improve the life of the mold as well as to minimize the defect rate to reduce the production efficiency and manufacturing cost, the state of the mold during the formation of the coating layer by a plurality of heat treatment It is to provide a mold and a manufacturing method having a plurality of coating surface to prevent deformation.
상기한 목적은 표면에 TiN(경질층)과 TiN 및 AL 합금막(연질층)이 상호 교호되는 형태로서 다수겹으로 적층구성되는 다층코팅면을 갖는 금형을 구비하므로서 달성되며,The above object is achieved by having a mold having a multi-layer coating surface in which a plurality of layers of TiN (hard layer) and a TiN and AL alloy film (soft layer) are alternately formed on a surface thereof.
또한, 금형강의 절단하여 내,외경과 외곽면홀을 가공한 후 면을 절삭가공하는 1차 가공공정과,In addition, the primary machining process of cutting the surface after cutting the inner and outer diameter and the outer surface hole of the mold steel,
1차가공된 금형을 1,2차에 걸쳐 예열하고 1025℃의 온도로 2시간에 걸쳐 소입을 행한 후, 뜨임작업(온도530℃,2시간)을 3차례 반복하는 열처리공정과,A preheating process of the first processed mold for 1 and 2 times, followed by quenching at a temperature of 1025 ° C. for 2 hours, followed by three times of tempering operations (temperature 530 ° C., 2 hours);
열처리를 마친 금형의 경도를 검사한 후, 금형의 외둘레면과 외,내경을 성형연마하는 2차 가공공정과,After the hardness of the mold after heat treatment, the secondary processing step of forming and polishing the outer circumferential surface of the mold and the outer and inner diameters,
금형의 이형 형상면 및 외곽면 홀을 가공하고 경면의 래핑작업과 칫수검사작업이 행하여지는 정밀가공공정과,Precision machining process in which mold-shaped and outer surface holes of molds are processed, mirror lapping and dimension inspection work is performed;
금형을 진공조내의 회전설치구에 설치한 후, 복수개의 분사노즐을 통해 코팅원료인 Tin또는 Tin과 AL합금을 아크,스파크에 의해 분산증착시키되, 가열온도를 450℃- 500℃로 설정하여 금형의 표면으로 다층코팅막을 형성하는 코팅공정으로 이루어지는 금형의 제조방법을 구체적인 수단으로 구비하므로서 달성된다.After the mold is installed in the rotary installation hole in the vacuum chamber, tin or Tin and AL alloys, which are coating materials, are dispersed and deposited by arc and spark through a plurality of injection nozzles, and the heating temperature is set at 450 ° C-500 ° C. The manufacturing method of the metal mold | die which consists of a coating process of forming a multilayer coating film by the surface of the said is achieved by providing with a specific means.
Description
본 발명은 다층코팅면을 갖는 금형 및 그 제조방법에 관한 것으로, 더욱 상세하게는 금형의 내부표면에 다층코팅막을 형성시켜 몰딩된 제품의 품질을 향상시킴은 물론 불량률을 최소화하므로서 생산성의 향상을 도모함과 동시에 금형의 사용수명을 연장시키므로서 사용효율또한 중진되도록 한 다층코팅면을 갖는 금형 및 그 제조방법에 관한 것이다.The present invention relates to a mold having a multi-layer coating surface and a method of manufacturing the same, and more particularly, to form a multilayer coating film on the inner surface of the mold to improve the quality of the molded product as well as to improve the productivity by minimizing the defective rate. In addition, the present invention relates to a mold having a multi-layered coating surface and a method of manufacturing the same, which extends the service life of the mold and improves the use efficiency.
일반적으로, 금형이라함은 주물이나 플라스틱 성형에 사용되는 금속제 형틀을 일컫는 것인바,Generally, a mold refers to a metal mold used for casting or plastic molding.
이와같은 금형을 이용하여 제품을 생산하는 금형산업은 경제성장을 주도하는 자동차나 전자제품과 같은 고도의 기술제품은 물론 고무제품, 유리제품 및 생활용품등의 경공업제품에 이르기까지 그 활용범위가 점차적으로 확산되는 추세에 있다.The mold industry, which manufactures products using such molds, has a wide range of applications from high technology products such as automobiles and electronics, which lead economic growth, to light industrial products such as rubber products, glass products and household goods. The trend is to spread.
한편, 이와같은 전반적인 산업분야에서 범용되어지고 있는 금형의 일례로는 각종 TV 또는 모니터브라운관용 편향 요크 및 통신용 전자장비의 트랜스포머 등과 같이 고주파를 발생한는 곳에 적용되는 코어(core)제품을 성형하는 금형을 들 수 있는데,On the other hand, as an example of a mold that is widely used in the general industrial field, such as a mold for forming a core product that is applied to a high frequency generating area such as deflection yokes for various TV or monitor tube and transformer of communication electronic equipment. Can be
근래에 들어, 상기 코어의 재질로 전기적인 비저항이 크고 다른 금속자성체에 비해 파워손실이 적으며, 원료단가가 저렴한 이점을 갖는 강자성체인 페라이트(ferrite)를 그 구성재질로서 적용하게 됨에 따라 이를 성형하는 금형또한 내마모성을 향상시키고자 금형을 가공한 후, 초경소재인 크롬을 도금하게 되었다.(크롬도금시 코팅막의 경도는 1750HV임.)In recent years, the ferrite (ferrite), a ferromagnetic material having a high electrical resistivity and low power loss compared to other metal magnetic materials, and having a low raw material cost, is formed as the material of the core. The mold is also processed to improve wear resistance, and then plated with chromium, which is a cemented carbide material. (The hardness of the coating film is 1750 HV.)
하지만, 상기와 같이 내부면으로 단수층의 크롬도금을 한 코어제조용 금형은 페라이트재질로 된 코어의 몰딩시 페라이트 분말이 갖는 고마모성으로 인해 그 수명(대략 3만개 정도의 제품생산후 교체 됨)이 단축되는 문제점과 함께, 제품의 몰딩성형 중에도 페라이트의 고마모성으로 인해 부분적으로 코팅층이 부식되거나 훼손됨에 따라 양질의 제품생산률 저하 및 이에 비례하여 제품 불량률을 상승시키는 요인으로 작용하므로 불필요한 재료가 소모되는 경제적인 손실이 생산자에게 상당한 부담으로 남는 것이었다.However, as described above, the core manufacturing mold coated with a single layer of chromium on its inner surface has a long service life (replaced after production of about 30,000 products) due to the high abrasion property of the ferrite powder when molding the core made of ferrite material. Along with the shortening problem, even during molding of the product, due to the high abrasion property of the ferrite, the coating layer is corroded or damaged in part, thereby reducing the quality production rate and increasing the product defect rate in proportion to the unnecessary material. Economic losses left a significant burden on producers.
따라서, 본 발명은 전술한 금형, 특히 강자성체를 구성재질로 하는 제품의 금형이 갖는 제반적인 문제점을 해결하고자 창안된 것으로,Therefore, the present invention was devised to solve the general problems of the above-described mold, in particular, a mold of a product having a ferromagnetic material as a constituent material.
본 발명의 목적은 금형의 표면에 다수코팅층을 구성시켜, 금형의 수명을 향상시킴은 물론 불량률을 최소화하여 생산효율 및 제조원가를 절감할 수 있으며, 다수번에 걸친 열처리로 코팅층의 형성시 금형의 상태변형을 방지토록 한 다수코팅면을 갖는 금형 및 그 제조방법을 제공함에 있다.An object of the present invention is to form a plurality of coating layer on the surface of the mold, to improve the life of the mold as well as to minimize the defect rate to reduce the production efficiency and manufacturing cost, the state of the mold during the formation of the coating layer by a plurality of heat treatment It is to provide a mold and a manufacturing method having a plurality of coating surface to prevent deformation.
상기한 목적은 표면에 TiN(경질층)과 TiN 및 AL 합금막(연질층)이 상호 교호되는 형태로서 다수겹으로 적층구성되는 다층코팅면을 갖는 금형을 구비하므로서 달성되며,The above object is achieved by having a mold having a multi-layer coating surface in which a plurality of layers of TiN (hard layer) and a TiN and AL alloy film (soft layer) are alternately formed on a surface thereof.
또한, 금형강의 절단하여 내,외경과 외곽면홀을 가공한 후 면을 절삭가공하는 1차 가공공정과,In addition, the primary machining process of cutting the surface after cutting the inner and outer diameter and the outer surface hole of the mold steel,
1차가공된 금형을 1,2차에 걸쳐 예열하고 1025℃의 온도로 2시간에 걸쳐 소입을 행한 후, 뜨임작업(온도530℃,2시간)을 3차례 반복하는 열처리공정과,A preheating process of the first processed mold for 1 and 2 times, followed by quenching at a temperature of 1025 ° C. for 2 hours, followed by three times of tempering operations (temperature 530 ° C., 2 hours);
열처리를 마친 금형의 경도를 검사한 후, 금형의 외둘레면과 외,내경을 성형연마하는 2차 가공공정과,After the hardness of the mold after heat treatment, the secondary processing step of forming and polishing the outer circumferential surface of the mold and the outer and inner diameters,
금형의 이형 형상면 및 외곽면 홀을 가공하고 경면의 래핑작업과 칫수검사작업이 행하여지는 정밀가공공정과,Precision machining process in which mold-shaped and outer surface holes of molds are processed, mirror lapping and dimension inspection work is performed;
금형을 진공조내의 회전설치구에 설치한 후, 복수개의 분사노즐을 통해 코팅원료인 Tin또는 Tin과 AL합금을 아크,스파크에 의해 분산증착시키되, 가열온도를 450℃- 500℃로 설정하여 금형의 표면으로 다층코팅막을 형성하는 코팅공정으로 이루어지는 금형의 제조방법을 구체적인 수단으로 구비하므로서 달성된다.After the mold is installed in the rotary installation hole in the vacuum chamber, tin or Tin and AL alloys, which are coating materials, are dispersed and deposited by arc and spark through a plurality of injection nozzles, and the heating temperature is set at 450 ° C-500 ° C. The manufacturing method of the metal mold | die which consists of a coating process of forming a multilayer coating film by the surface of the said is achieved by providing with a specific means.
도 1은 본 발명에 따른 다층코팅면을 갖는 금형의 제조방법을 나타낸 순서도1 is a flow chart showing a manufacturing method of a mold having a multi-layer coating surface according to the present invention.
도 2는 본 발명에 따른 금형의 표면으로 다층코팅막을 형성방법을 나타낸 개략도Figure 2 is a schematic diagram showing a method of forming a multilayer coating film on the surface of the mold according to the present invention
도 3은 도 2를 통해 금형의 표면으로 형성된 코팅막의 단면도3 is a cross-sectional view of the coating film formed as a surface of the mold through FIG.
<도면주요부위에 대한 부호의 설명><Explanation of symbols for major parts of drawing>
S1 : 1차 가공공정 S2 : 열처리공정 S3 : 2차 가공공정S1: 1st processing process S2: Heat treatment process S3: 2nd processing process
S4 : 정밀가공공정 S5 : 코팅공정 M : 금형S4: Precision Machining Process S5: Coating Process M: Mold
1 : 진공실 11 : 분사노즐 12 : 회전설치구DESCRIPTION OF SYMBOLS 1 Vacuum chamber 11 Injection nozzle 12 Rotary installation port
A : Tin B : Tin + Al 합금 C : 코팅막A: Tin B: Tin + Al Alloy C: Coating Film
A' :Tin막 B': Tin + Al 합금막A ': Tin film B': Tin + Al alloy film
이하, 본 발명의 바람직한 실시예를 첨부도면에 의거하여 상세히 설명하기로 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 1은 본 발명에 따른 다층코팅면을 갖는 금형의 제조방법을 나타낸 순서도이고, 도 2는 본 발명에 따른 금형의 표면으로 다층코팅막을 형성방법을 나타낸 개략도이며 도 3은 도 2를 통해 금형의 표면으로 형성된 코팅막의 단면도로서 그 구성상태를 살펴보면,1 is a flow chart illustrating a method of manufacturing a mold having a multilayer coating surface according to the present invention, Figure 2 is a schematic view showing a method of forming a multilayer coating film on the surface of the mold according to the invention and Figure 3 is a As a cross-sectional view of the coating film formed into the surface,
1차 가공공정(S1)과, 열처리공정(S2)과, 2차 가공공정(S3)과, 정밀가공공정(S4)과, 코팅공정(S5)을 통해 표면으로 다층코팅면이 형성되는 금형(M)이 구성된다.Molds having a multi-layer coating surface formed on the surface through the first machining step (S1), the heat treatment step (S2), the second machining step (S3), the precision machining step (S4), and the coating step (S5) ( M) is configured.
여기서, 상기 1차 가공공정(S1)은 금형의 재료인 금형강을 적당한 크기로 절단하여 선반작업기구에 의해 금형 내부틀의 라운딩되는 부분인 내,외경을 가공하고, 밀링머신을 통해 나사산 등의 외둘레면 홀을 가공하며, 드릴 또는 수작업에 의해 선반 및 밀링작업을 마친 금형을 연마하는 공정이다.Here, the primary processing step (S1) is to cut the mold steel, which is the material of the mold to a suitable size, to process the inner and outer diameters of the rounded portion of the mold inner frame by the lathe working mechanism, and through the milling machine The outer circumferential surface hole is processed, and the lathe and milling work is polished by drilling or manual work.
또한, 상기 열처리공정(S2)은 1차 가공을 마친 금형의 내부적 결정조직을 최적의 상태로 조절하기 위해 열처리를 행하는 공정으로서, 이는 우선 금형을 경화하기 위한 소입((燒入)담금질)을 행하기 위해 금형을 550℃에서 1시간동안 1차 예열하고, 850℃에서 1시간동안 2차 예열한 후, 1025℃에서 2시간동안 가열한 후 급랭하므로서 이루어지며,In addition, the heat treatment step (S2) is a step of performing a heat treatment in order to adjust the internal crystal structure of the mold after the primary processing to the optimum state, which is first hardened to harden the mold (燒 入) The mold is preheated at 550 ° C. for 1 hour, preheated at 850 ° C. for 1 hour, and then heated at 1025 ° C. for 2 hours and then quenched.
이후, 소입(담금질)작업에 의해 경화된 금형의 내부로 잔류하는 응력 등을 제거하기위한 뜨임(TEMPERING)작업을 행하게 되는데,After that, tempering (TEMPERING) to remove the residual stress, such as remaining in the hardened mold by the quenching (quenching) operation is performed,
이는 소입을 마친 금형을 530℃로 2시간에 걸쳐 재가열하여 냉각하는 작업을 3회 반복실시하므로서 경도와 점성강도와의 균형을 취하게하고, 잔류응력을 제거함은 물론 530℃의 뜨임온도를 설정함에 따라 표면부식성을 저하시키게 되는 것이며,This is done by reheating the mold after quenching at 530 ℃ for 2 hours and cooling it three times to balance hardness and viscosity, remove residual stress and set tempering temperature of 530 ℃. As a result, surface corrosion will be reduced.
특히, 후술하게 될 코팅공정(S5)에 따른 변형을 방치하게 되는 것이다.In particular, the deformation according to the coating process (S5) to be described later.
이후에 행하여지는 상기 2차 가공공정(S3)은 열처리를 마친 금형의 경도를 검사한 후 외둘레면과 평면을 성형연마하고 또한 원통형을 취하는 부위 및 외,내경을 연마하는 공정이다.After the secondary processing step (S3) to be carried out after the inspection of the hardness of the mold after the heat treatment is a step of polishing the outer peripheral surface and the surface, and taking a cylindrical shape and the outer, inner diameter is polished.
또한, 정밀가공공정(S4)은 이형 형상면, 즉 금형내부틀 소재의 두께가 50mm이하인 부분이나 막힌부분 등을 방전팁에 의한 스파크 발생으로 가공하고, 관통되는 부분인 이형 형상 홀을 와이어커팅한 후,In addition, the precision processing step (S4) is to process the release surface, that is, the portion of the mold inner frame material or the thickness of 50mm or less, the closed portion, etc. by the spark generation by the discharge tip, and wire-cut the release-shaped hole that is a penetrating portion after,
또 다시 각 가공부위의 다듬질(래핑)작업을 행한 후, 각 부위의 형상과 칫수가 올바른 설계치수에 상응하는지를 검사하는 공정이다.In addition, after finishing (lapping) each machining part, it is a process of checking whether the shape and the dimension of each part correspond to the correct design dimension.
한편, 상기 코팅공정(S5)은 전술한 바와같이 1,2차 가공공정과 정밀가공공정 및 열처리공정을 마친 금형의 표면으로 코팅면을 형성하는 공정으로서,On the other hand, the coating step (S5) is a step of forming a coating surface on the surface of the mold after the first and second processing, precision processing and heat treatment process as described above,
이와같은 코팅공정은 그 작업에 앞서 금형에 잔류하는 자력을 제거한 상태에서 알카리수와 순수한 물(온도는 80℃가 바람직함)로서 1,2차에 걸쳐 세정한 후, 세척잔유물(지문 등)을 제거하는 작업을 행함이 바람직하며,In the coating process, the alkaline water and the pure water (temperature is preferably 80 ° C) are washed one or two times after removing the magnetic force remaining in the mold prior to the operation, and then the cleaning residues (fingerprints, etc.) are removed. It is desirable to do the work
후술하게 될 진공실 또한 화성((化成)DEGASSING)온도를 450-500℃로 설정하여 진공실내부의 흡착되어 있는 잔류기체를 배출하는 불순물 제거작업을 선행함이 바람직하다.The vacuum chamber, which will be described later, is also preferably set to a chemical degassing temperature of 450-500 ° C. to precede the removal of impurities to discharge the adsorbed residual gas in the vacuum chamber.
위와같은 코팅준비작업을 마친후에는 도 2에 도시된 바와같이 진공펌프에 의해 진공상태가 유지되며 복수개의 분사노즐(11)이 구성되고 아크전원이 구비되는 진공실(1)로 금형(M)을 설치하되, 이러한 금형의 설치작업은 상기 진공실(1)의 중앙부로 구성되는 회전설치구(12)에 금형(M)을 다단으로 설치되는 것이다.After finishing the coating preparation operation as described above, as shown in Figure 2 is maintained in a vacuum state by a vacuum pump, a plurality of injection nozzles 11 are composed of a mold (M) to the vacuum chamber (1) equipped with an arc power source The installation work of the mold is to install the mold (M) in a multi-stage in the rotary mounting hole 12 composed of the central portion of the vacuum chamber (1).
이후, 별도의 가열수단(히터등)에 의해 진공실(1)의 온도를 450℃-500℃ 이하로 변화시킨 후 상기 분사노즐(11)을 통해 Ti와 N2가스를 반응시키므로서 생성되는 100%의 Tin(A)과, 전술한 Tin과 AL(알류미늄)이 50:50의 중량비를 갖는 합금(B)을 도 2에 도시된 바와같이 회전을 행하는 회전설치구(12)로 설치된 금형(M)에 지그재그형태(각각이 분사할 코팅제와 선택된 시간에 동일분사액만이 분사됨.)로서 분사함과 동시에 별도의 제어기에 의해 아크와 스파크를 교대로 발생시키므로서 각 코팅재료들을 금형의 표면으로 분산,증착되는 것으로서, 이와같은 코팅작업의 작업시간은 9시간에 걸쳐 행하여 지게 된다.Thereafter, the temperature of the vacuum chamber 1 is changed to 450 ° C.-500 ° C. or lower by a separate heating means (heater, etc.), and then 100% generated by reacting Ti and N 2 gas through the injection nozzle 11. Mold (M) provided with a rotary installation tool (12) for rotating Tin (A) of the alloy and the alloy (B) having the weight ratio of Tin and AL (aluminum) having a weight ratio of 50:50 as shown in FIG. Each coating material is distributed to the surface of the mold by zigzag type (each sprayed in the same injection liquid at the selected time and the coating agent to be sprayed) and the arc and spark are alternately generated by a separate controller. As a deposition, the working time of such a coating operation is performed over 9 hours.
한편, 상기와 같은 코팅작업에 의해 형성되는 코팅막(C)은 도 3에 도시된 바와같이 TiN((A')경질층)과 Tin + AL합금막((B')연질층)이 교호되는 구조로서 다층(25층)을 형성하게 되는 것이며, 진공실(1)내에서의 코팅작업을 마친 후에는 진공실(1)의 온도를 100℃이하로 하강시킨후 회전설치구(12)에서 금형(M)을 탈착하여 출고검사(코팅상태 피막두께측정 및 접착력측정 등)를 행한 후 모든제작공정을 마친 완제품으로서의 다층코팅면을 갖는 금형(M)이 제작되는 것이다.On the other hand, the coating film (C) formed by the coating operation as described above has a structure in which TiN ((A ') hard layer) and Tin + AL alloy film ((B') soft layer) is alternated as shown in FIG. As a result, a multi-layer (25 layers) is formed. After finishing the coating work in the vacuum chamber 1, the temperature of the vacuum chamber 1 is lowered to 100 ° C. or lower, and then the mold M is formed at the rotary installation tool 12. The mold M having a multi-layer coating surface as a finished product after completion of all the manufacturing processes after performing a factory inspection (coating state film thickness measurement and adhesion force measurement, etc.) by detaching the product was carried out.
따라서, 상기와 같은 공정을 통해 형성되는 다층코팅면은 코팅두께가 4-5㎛이고, 3000 HV의 경도를 갖게 되는데,Therefore, the multilayer coating surface formed through the above process has a coating thickness of 4-5 μm and a hardness of 3000 HV.
이는 열처리와 래핑가공을 마친 상태에서 형성됨에 따라 그 밀착성이 우수하고, 특히 금형(M)의 열처리를 행함에 있어 고온으로 뜨임작업을 3회에 걸쳐 되풀이함에 따라 높은 면압하에서의 내박리성이 향상되는 것이며,높은 표면 조도(租度)를 갖게 돠는 것이며,It is excellent in adhesion as it is formed in the state of heat treatment and lapping processing, and in particular, in the heat treatment of the mold (M), the repetition resistance under high surface pressure is improved by repeating three times the tempering operation at high temperature. To have a high surface roughness,
이와같은 다층코팅면을 갖는 금형(M)을 제품성형, 특히 페라이트 코어 생산에 적용할 경우에는 코팅층이 전술한 바와같이 우수한 경도와 밀착성을 갖게 됨에 따라 높은 내마모성을 갖는 페라이트 분말에 적응하여 부식 및 부분훼손을 최소화할 수 있으므로서 양질의 제품생산이 가능하며, 다수겹으로 구성됨에 따라 소수층의 코팅막이 훼손되더라도 폐라이트의 품질에 큰 영향을 주지않게 되는 것이다.When the mold (M) having such a multi-layer coating surface is applied to product molding, especially the production of ferrite cores, the coating layer has excellent hardness and adhesion as described above, so that it is adapted to ferrite powder having high wear resistance and corrosion and part. It is possible to minimize the damage and produce a good quality product, and because it is composed of multiple layers, even if the minor coating layer is damaged, the quality of the waste light will not be significantly affected.
또한, Tin((A')경질층)과 Tin + AL합금막((B')연질층)이 교호되는 구조로서 다층코팅면을 구성함에 따라 외부충격을 연질층(B')이 흡수하여 코팅막(C)의 손상을 최소화하게 되는 것이다.In addition, the structure in which Tin ((A ') hard layer) and Tin + AL alloy film ((B') soft layer) are alternating to form a multilayer coating surface, so that the soft layer (B ') absorbs the external impact and the coating film. Minimize damage to (C).
또한, 본 발명에 따른 금형 및 그 제조방법은 일례로서 서술한 페라이트 코어제품이외에 강자성체를 구성재질로하는 기타제품의 금형에도 적용할 수 있는 것이다.In addition, the mold according to the present invention and the manufacturing method thereof can be applied to molds of other products having ferromagnetic materials as a constituent material in addition to the ferrite core product described as an example.
이상과 같이 본 발명에 따른 다수코팅면을 갖는 금형 및 그 제조방법은 금형을 제작함에 있어, 금형의 표면에 연질막과 경질막이 교호되는 다수코팅면을 구성하여, 코팅면의 내구성을 향상시키므로서 제품몰딩시 양질의 제품을 생산할 수 있음에 따른 제품생산성 향상과 함께 불량률의 최소화에 따른 생산원가의 절감효과를 갖는 것이며,As described above, a mold having a plurality of coating surfaces and a method of manufacturing the same according to the present invention comprise a plurality of coating surfaces in which a soft film and a hard film are alternately formed on the surface of the mold, thereby improving durability of the coating surface. It has the effect of reducing the production cost by minimizing the defective rate as well as improving the product productivity by being able to produce high quality products when molding the product.
특히, 열처리공정에서 3차례에 걸친 고온의 뜨임작업을 행함에 따라 코팅막의 성형시 금형의 변형이 방지되어 정밀도가 우수하며 금형자체의 내구성을 향상시킨 것으로, 생산자 및 사용자에게 괄목힐만한 기대효과를 제공할 수 있는 발명인 것이다.In particular, by performing three times of high temperature tempering in the heat treatment process, the deformation of the mold is prevented when forming the coating film, so the precision is excellent and the durability of the mold itself is improved. It is an invention that can be provided.
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| KR100833332B1 (en) * | 2007-03-06 | 2008-05-28 | 조선대학교산학협력단 | Mold for injection molding and manufacturing method thereof |
| KR101875593B1 (en) * | 2011-04-18 | 2018-07-06 | 니혼 고슈하 고교 가부시끼가이샤 | Press forming die, and method of manufacturing press forming die protection film |
| CN117821730A (en) * | 2024-01-05 | 2024-04-05 | 宁波久生模具科技有限公司 | Die heat treatment method |
-
1999
- 1999-05-31 KR KR1019990019873A patent/KR19990068529A/en not_active Application Discontinuation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100833332B1 (en) * | 2007-03-06 | 2008-05-28 | 조선대학교산학협력단 | Mold for injection molding and manufacturing method thereof |
| KR101875593B1 (en) * | 2011-04-18 | 2018-07-06 | 니혼 고슈하 고교 가부시끼가이샤 | Press forming die, and method of manufacturing press forming die protection film |
| CN117821730A (en) * | 2024-01-05 | 2024-04-05 | 宁波久生模具科技有限公司 | Die heat treatment method |
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