KR950014927B1 - Method for making a precision table of a thermal spray coating - Google Patents

Method for making a precision table of a thermal spray coating Download PDF

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Publication number
KR950014927B1
KR950014927B1 KR1019930019765A KR930019765A KR950014927B1 KR 950014927 B1 KR950014927 B1 KR 950014927B1 KR 1019930019765 A KR1019930019765 A KR 1019930019765A KR 930019765 A KR930019765 A KR 930019765A KR 950014927 B1 KR950014927 B1 KR 950014927B1
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South Korea
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cast iron
coating
manufacturing
spray coating
ceramics
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KR1019930019765A
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Korean (ko)
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KR950008712A (en
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오승택
양성철
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만도기계주식회사
정몽원
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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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material
    • C23C4/073—Metallic material containing MCrAl or MCrAlY alloys, where M is nickel, cobalt or iron, with or without non-metal elements
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/131—Wire arc spraying

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating By Spraying Or Casting (AREA)

Abstract

The manufacturing method improves corrosion resistance and wear resistance of the table by coating ceramics on the surface. The manufacturing method comprises: under-cutting the surface of gray cast iron; taper-coating the use surface with ceramics such as abrasion resistant material using high frequency arc of inert gas ions; and grinding and lapping. Pref. the ceramics coating thickness is 0.01-0.8 mm.

Description

데어밀 스프레이 코팅(THERMAL SPRAY COATING) 한 정밀정반 제조방법Manufacturing method of precision surface plate by THERMAL SPRAY COATING

본 발명은 데어밀 스프레이 코팅(Thermal Spray Coating)한 정밀정반 제조방법에 관한 것으로서, 특히 주철재정반의 내식성, 내마모성, 내상성에 대한 취약성을 개선하고 석재정반에서는 마그네트 지그(Magnet Jig)의 흡인고정되지 못하는 불편함을 개선하여 반영구적으로 사용할 수 있도록 한 것이다.The present invention relates to a method of manufacturing a precision surface plate with a thermal spray coating, and in particular, improves the vulnerability to corrosion resistance, abrasion resistance, and scratch resistance of cast iron plate, and does not suck and fix the magnet jig on the stone plate. It can be used semi-permanently by improving the inconvenience.

일반적으로 사용되고 있는 정밀정반은 주철재와 석재의 2종류로 제조되고 있다. 그러나 주철재는 용해한 후 금형에 부어 재질조건을 내마모성 향상을 위해 구상 혹연주철이나 공정혹연주철을 만든 후 열처리하여 열삭가공한 상태로 제조된다.Precision plates generally used are manufactured in two types, cast iron and stone. However, cast iron materials are melted and poured into molds to make material conditions, which are manufactured in the form of spherical cast iron or eutectic cast iron and heat treated by heat treatment.

그리고 석재정반은 자연석인 화강암을 황삭정삭 연마공정을 거쳐 제조한다.And the stone surface plate is manufactured by roughing and polishing natural granite.

상기 제조방법을 구체적으로 설명하면 주철재정반에 있어서, 용해→응고(금형응고)→열처리(Quenching ＆ Tempering)→황삭가공→정삭가공→연마→Finish→완제품 순으로 제조하되, 상기 용해시 내마모성을 향상시키기 위해 구상흑연주철이나, 공정 흑연주철을 제조하기 위해 구상화촉진원소(Mg,Ce)를 첨가하고, 합금원소(Mo,Crv)를 첨가한다. 또한 내마모성 향상을 위해 냉각 속도를 빠르게 하기 위해 시형이 아닌 금형에서 응고시킨다.In detail, the manufacturing method described above is manufactured in the order of melting → solidification (mold solidification) → heat treatment (Quenching & Tempering) → roughing processing → finishing processing → polishing → Finishing → finished product in the cast iron base plate. In order to produce spherical graphite cast iron or process graphite cast iron, spheroidization promoting elements (Mg, Ce) are added and alloy elements (Mo, Cr) are added. It also solidifies in molds rather than prototypes for faster cooling rates for improved wear resistance.

그리고 석재정반에 있어서는 자연석재화강암→황삭→정삭→연마→Finish(happing)→완제품 순으로 제조한다.And in the stone surface plate, natural stone granite → roughing → finishing → polishing → finish (happing) → finished product.

그러나 상기와 같은 제조방법에 있어서, 주철재정반을 가공이 용이하고 가격도 저렴한 편이지만 사용면의 내마모성, 내상성이 좋지 않아 사용면에 부식 또는 흠집이 생겼을 경우 사용불가능한 경우가 많으며 정밀정반의 사용용도에는 부적합하고, 사용시 주철내의 흑연으로 인해 사용측정기구 등의 청결관리가 불가능하다.However, in the manufacturing method as described above, the cast iron base plate is easy to process and low in price, but the wear resistance and scratch resistance of the used surface are not good, so it is often impossible to use it in case of corrosion or scratch on the used surface. It is unsuitable for the use, and it is impossible to manage the cleanliness of the measuring instrument due to the graphite in the cast iron.

그리고 석재정반은 제조가격이 고가이고 정밀측정 보조장치로 사용되고 있는 마그네트 스텐드 지그(Magnet Stand Jig)가 정반에 흡인 고정사용할 수 없는 사용상 불편함이 있고 중량도 무거운 문제점 등이 있다.In addition, the stone surface plate has a problem in that it is inconvenient to use the magnet stand jig, which is expensive to manufacture and that the magnet stand jig, which is used as a precision measurement aid, cannot be fixed to the surface plate, and has a heavy weight.

본 발명은 상기한 종래의 제결점 및 문제점 등을 감안하여서 제조된 것으로서 본 발명의 그 목적으론 철재표면에 일정한 두께로 세라믹을 수회에 걸쳐 경사코팅하여 내마모성이나, 내상성, 내식성 등을 우수하게 하고, 재질자체의 흑연으로 인한 사용측정기구 등을 청결히 관리 못하는 단점 등을 보완할 수 있도록 하는 한편, 저렴한 가격으로 공급하여 반영구적으로 사용토록 하려는 것이 특징이다.The present invention was made in view of the above-mentioned conventional drawbacks and problems, and the object of the present invention is to incline the ceramic surface several times to a certain thickness on the steel surface to improve wear resistance, scratch resistance, corrosion resistance and the like. In addition, it is possible to make up for the disadvantages of not being able to cleanly use the measuring instrument due to the graphite of the material itself, and to supply it at a low price for semi-permanent use.

상기의 목적을 달성할 수 있는 본 말명의 제조방법을 설명하면 다음과 같다.Referring to the manufacturing method of the present name that can achieve the above object is as follows.

일반회주철 모제구조품→코팅(Coating) 피막층의 박리방지를 위한 각부에 언더커팅(Under Cutting)→사용면에 대한 본드코팅 또는 세라믹 재질경사코팅→연마 및 래핑(Lapping)→완제품 순으로 제조하여서 된 것이다.It is manufactured in the order of general gray cast iron base structure → coating (Under cutting) on each part to prevent peeling of coating film layer → bond coating on the surface of use or inclined coating of ceramic material → polishing and lapping → finished product will be.

이때 상기 일반회주철 주조품 모재를 종래의 주철재의 제조방법과는 달리 모재는 구상흑연주철이나, 공정흑연주철과 같은 고급주철을 사용하지 않고 일반회주철을 사용하며, 표면조도가 Rmax 10-12㎛ 내의 상태에서 각(EDGE)부를 언더커팅(Under Cutting)한 후 사용면에 세라믹 성분 점차적으로 증가되도록 저가의 세라믹(CERAMIC)(Al2O3)으로 데어밀 스프레이 경사코팅한 후 연마래핑 제조하는 것이다.In this case, unlike the conventional method for producing cast iron cast iron castings, the base metal is made of ordinary gray cast iron without using spherical graphite cast iron or high-grade cast iron such as eutectic graphite cast iron, and the surface roughness is within Rmax 10-12 μm. After cutting the EDGE in the state (Under cutting) (Under cutting) is a low-cost ceramic (CERAMIC) (Al 2 O 3 ) to be used for the surface of the ceramic components to gradually increase the surface after the gradient spray spray coating to produce a lapping.

한편, 일반회주철모제를 제조한 후 코팅여유를 0.1∼0.3㎜ 둔 후 거친면을 래핑하지 않고 사용면을 데어밀 스프레이 코팅장치로 세라믹분말을 불활성가스(Ar,N2,H2,He)에 고주파아크를 주입하여, 가스를 이온화시키고 건(Gun)의 노즐선단부에서 발생하는 고온, 고열(약 16,500℃)에 분말을 이송시켜, 고속으로 분사하여 피복시킨다.On the other hand, after manufacturing the gray cast iron hair coating, leave the coating margin 0.1 ~ 0.3㎜, and the ceramic powder is applied to the inert gas (Ar, N 2 , H 2 , He) with a demil spray coating device without lapping the rough surface. A high frequency arc is injected to ionize the gas, transfer the powder to high temperature and high heat (approximately 16,500 ° C) generated at the nozzle tip of the gun, and spray and coat at high speed.

이때 피복두께는 0.1∼0.5㎜ 정도로 피복하는데 마그네트 흡입효과를 위해서 최대한 0.8㎜ 를 초과해서는 안되며, 모재에서 외측으로 갈수록 세라믹 성분이 점차적으로 증가되도록 경사코팅한 후 연마 및 래핑공정을 거쳐 조도를 Ramx 4.0㎛ 이내로 가공한다.At this time, the coating thickness should be about 0.1 ~ 0.5mm, but should not exceed 0.8mm for the magnet suction effect, and the roughness will be increased after polishing and lapping to make the ceramic components gradually increase from the base material to the outside. Process within micrometers.

이상 설명한 바와같이 일방회주철모제주조품에 0.1∼0.5㎜ 이내로 세라믹을 경사코팅함으로 사용면에 충분한 마그네트 성질을 갖어 내마모성이나, 내상성, 내식성 등이 우수하며, 주철재정반에서의 재질차체의 흑연으로 인한 사용측정기구 등을 청결히 관리못하는 단점을 보완할 수 있는 한편, 제조원가면에서 모재를 내마모주철이 아닌 일반회주철로 열처리 공정을 거치지 않고 사용면만 세라믹으로 데어밀 스프레이 경사코팅하므로서 가격이 저렴하고, 기존 정반의 흠집이나 부식으로 인한 폐기정반을 보수하여 재활용할 수 있어 반영구적으로 사용할 수 있는 효과가 있다.As described above, the ceramics are inclinedly coated within 0.1 ~ 0.5mm to one-piece cast iron cast product, which has enough magnet properties on the surface to be used, and is excellent in abrasion resistance, scratch resistance, corrosion resistance, and the like. It can compensate for the disadvantages of not being able to cleanly use the measuring instruments, etc.In addition, it is inexpensive because the slope of the dry mill spray is coated with ceramic only on the use surface without undergoing the heat treatment process of the base material from the gray cast iron, not wear-resistant cast iron, It can be used semi-permanently as it can be repaired and recycled due to scratches or corrosion of the surface.

Claims (3)

일반회주철모재주조품 표면을 언더커팅한 후 사용면에 대해 내마모재질로 세라믹을 경사 코팅하여서 된 것을 특징으로 하는 데어밀 스프레이 코팅한 정밀정반 제조방법.A method of manufacturing precision surface coating with a spray mill, characterized in that the undercut of the surface of the cast iron base cast product is inclined coated with a wear-resistant material on the surface used. 제1항에 있어서, 세라믹코팅을 불활성가스에 고주파 아크를 주입하여 가스를 이온화시키고, 건의 노즐선단부에 고속으로 모재를 분사시켜 모재에 압착 또는 접합되는 용사기법으로 제조됨을 특징으로 하는 데어밀 스프레이 코팅한 정밀정반 제조방법.The method of claim 1, wherein the ceramic coating is injected with a high frequency arc in an inert gas to ionize the gas, spraying the base material at a high speed to the nozzle tip of the gun is manufactured by a spraying method that is pressed or bonded to the base material by spraying method Precision plate manufacturing method. 제1항에 있어서, 세라믹 코팅 두께를 0.01-0.8㎜ 범위내로 하는 것을 특징으로 하는 데어밀 스프레이 코팅한 정밀정반 제조방법.The method of claim 1, wherein the ceramic coating thickness is in the range of 0.01-0.8 mm.
KR1019930019765A 1993-09-25 1993-09-25 Method for making a precision table of a thermal spray coating KR950014927B1 (en)

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KR950014927B1 true KR950014927B1 (en) 1995-12-18

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