KR100251378B1 - Coating layer composite and coating method of ceramic docter blade - Google Patents

Coating layer composite and coating method of ceramic docter blade Download PDF

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Publication number
KR100251378B1
KR100251378B1 KR1019980004648A KR19980004648A KR100251378B1 KR 100251378 B1 KR100251378 B1 KR 100251378B1 KR 1019980004648 A KR1019980004648 A KR 1019980004648A KR 19980004648 A KR19980004648 A KR 19980004648A KR 100251378 B1 KR100251378 B1 KR 100251378B1
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ceramic
coating layer
coating
doctor blade
bevel
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KR1019980004648A
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Korean (ko)
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KR19990070038A (en
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이상일
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권봉순
남수산업주식회사
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/32—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper
    • D21H23/34—Knife or blade type coaters
    • D21H23/36—Knife or blade forming part of the fluid reservoir, e.g. puddle-type trailing blade or short-dwell coaters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G3/00—Doctors
    • D21G3/005—Doctor knifes

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Coating Apparatus (AREA)
  • Paper (AREA)
  • Coating By Spraying Or Casting (AREA)

Abstract

PURPOSE: Provided are a method for forming a coating layer by improving a ceramic component of a ceramic coating layer and its composition rate and a composition for coating layer obtained therefrom. Therefore, the service life of a ceramic doctor blade is extended by increasing the abrasion resistance and hardness of a coating layer. CONSTITUTION: The method comprises the steps of: performing plane abrasion on both sides of carbon steel plate; performing bevel abrasion on one side; carrying out plasma coating with 80% Ni-20% Cr powder; carrying out plasma coating on a surface for ceramic coating with a powder mixture of a ceramic component; performing plane bevel abrasion on a ceramic coating layer; and cutting to a predetermined size.

Description

제지용 코팅머신의 세라믹 독터블레이드의 코팅층 형성방법 및 코팅층 소성물Coating layer formation method and coating layer firing product of ceramic doctor blade of paper coating machine

본 발명은 제지(製紙) 과정에서 사용되는 코팅머신(coater machine)의 독터 블레이드(docter blade)의 세라믹 코팅층 형성 방법 및 세라믹 코팅층 조성물에 관한 것이다. 특히, 고급아트지 또는 백상지를 제조함에 있어 종이 표면에 점토와 탄산칼슘(CaCO3)의 혼합물(30:70) 비율을 도포하는데 인쇄되는 활자나 사진등이 인쇄될 때 퍼점이 없고 선명하게 하기 위한 것이다.The present invention relates to a method for forming a ceramic coating layer and a ceramic coating layer composition of a doctor blade of a coater machine used in a papermaking process. In particular, in the production of fine art paper or white paper, the ratio of clay and calcium carbonate (CaCO 3 ) mixture (30:70) is applied to the surface of the paper for printing and printing when printing or printing such as to have no spots. .

이와 같이 종이의 일측표면에 점토와 탄산칼슘의 혼합물을 도포하는 기계를 코터머신(coater machine)이라 하는데 이 코터머신에 점성체로 된 점토와 탄산칼슘 혼합물을 종이위에 얇게 도포하는 기능을 나이프와 같은 형태로 된 독터블레이드 (Docter Blade)에 의해 수행하도록 한다.In this way, a machine that applies a mixture of clay and calcium carbonate to one surface of paper is called a coater machine. A function of applying a thin layer of clay and calcium carbonate mixture on the paper to a coater such as a knife It is performed by the doctor blade in the form.

상기의 코터머신의 독터블레이드는 일반적으로 강철재질로 되고 나이프 (Knife)와 같은 형태로 된 소모성 부품인 것이다. 이 독터블레이드는 점토와 탄산칼슘 혼합물로 된 점성체를 도포하는 것이므로 그 날이 쉽게 마모가 일어나므로 그 수명이 매주 짧다할 것이다.The doctor blade of the coater machine is generally a consumable part made of steel and shaped like a knife. This doctorblade is a coating of a viscous mixture of clay and calcium carbonate, so the blade will wear out easily and its life will be short every week.

왜냐하면 종이 표면에 도포되는 점토 등의 점성체 두께를 극히 얇으면서 정확하게 도포되어야 하므로 독터블레이드가 마모가 일어나면 제조되는 종이의 품질이 크게 악화되기에 독터블레이드의 날 부분에 약간의 마모만 있어도 독터블레이드를 교체하여야 하기 때문이다.Because the thickness of the viscous material such as clay applied on the surface of the paper should be applied very thinly and accurately, if the doctor blade wears out, the quality of the paper produced will be greatly deteriorated. It must be replaced.

따라서 독터블레이드는 소모성 제품으로서 고도의 정밀도가 요구되는 부품인 것이다. 그런데 상기한 바처럼 기존의 독터블레이드의 수명이 짧아 1시간 내지 2시간밖에 사용할 수 없어 독터블레이드의 교체를 위에 제지공정의 전공정을 자주 중단하여야 했기에 그만큼 생산성이 떨어졌다 할 것이다.Therefore, the doctor blade is a consumable product and requires high precision. However, as mentioned above, since the life of the existing doctor blade is short and can only be used for 1 to 2 hours, the replacement of the doctor blade has to be frequently interrupted in the entire process of the papermaking process.

상기의 문제점을 개선하기 위하여 탄소강판에 Wo, Mo, Cr등 고경도, 고용점 금속을 코팅한 독터블레이드를 개발 사용하다가 현재는 알루미나(Al2O3)와 자르코니아 혼합분말을 융착 코팅한 세라믹(Ceramic) 코팅 독터블레이드를 개발 사용하고 있다.In order to solve the above problems, we developed a doctor blade coated with high hardness, solid solution metal such as Wo, Mo, Cr, etc. on carbon steel plate, and now ceramic coated with alumina (Al 2 O 3 ) and zirconia mixed powder. (Ceramic) Coating doctor blade is being used.

이와 같은 기존의 세라믹코팅 독터블레이드는 강철재 블레이드에 알루미나 72 volume％, 지르코니아 28 volume％ 혼합물을 플라스마(plasma) 융착하여 코팅한 것이다.Such conventional ceramic coating doctor blade is a plasma fusion coating of alumina 72 volume%, zirconia 28 volume% mixture on the steel blade.

이와 같은 종래의 세라믹 코팅블레이드의 제작 과정을 살펴보면 탄소강판(鋼板)의 양측면을 평활하게 연마를 한다음 코팅하고자 하는 면의 일측가장자리에 일정한 경사각을 주어 날을 세우는 베벨(Bevel) 연마를 하고, 코팅하고자 하는 면을 알루미나(Al2O3) 분말 72 volume％, 지르코니아(ZrO2) 28 volume％ 혼합물을 코팅하고자 하는 강판 일측면에 플라즈마(plasma) 용융코팅처리 하므로서 강판의 일측면에 세라믹 코팅층이 형성되고 이렇게 세라믹 코팅층이 형성된 강판면에 에폭시, 왁스등의 유기물을 도포하는데 이 공정은 에폭시와 왁스가 세라믹 코팅층내에 있는 기공을 메꾸어 주는 실링 공정인 것인데 다음의 연마공정시 코팅층의 취성 파괴를 막기 위함인 것이다. 그리고, 실링공정이 끝나면 세라믹 코팅층의 평활도를 높이기 위해 평면 연마한 다음 날 부분에 형성된 세라믹 코팅층의 두께를 일정하게 하는 배벨연마를 실시한 다음 일정한 사이즈로 재단 절단하여 검사후 출하하는 것이다.Looking at the manufacturing process of the conventional ceramic coating blades such as to smoothly polish both sides of the carbon steel sheet (鋼板) and then to bevel (Bevel) to raise the blade to give a certain inclination angle to one edge of the surface to be coated, coating A ceramic coating layer is formed on one side of the steel sheet by plasma melting coating of one side of the steel sheet to be coated with 72 volume% of alumina (Al 2 O 3 ) powder and 28 volume% of zirconia (ZrO 2 ) mixture. The organic coating such as epoxy and wax is applied to the steel sheet on which the ceramic coating layer is formed. will be. Then, after the sealing process is finished to increase the smoothness of the ceramic coating layer is subjected to a bavel polishing to make the thickness of the ceramic coating layer formed on the blade portion constant after the plane polishing, then cut and cut to a certain size and shipped after inspection.

상기와 같은 방법으로 세라믹 코팅층을 형성하는 종래의 세라믹 독터블레이드는 그 공정이 다단계로 이루어져 공정단계를 줄일 필요성이 있을뿐 아니라 상기와 같은 조성비율의 알루미나와 지르코니아로 된 세라믹 코팅층을 개선하여 사용수명을 연장할 필요성이 있는 것이다.The conventional ceramic doctor blade forming the ceramic coating layer by the above method is not only a necessity of reducing the process step because the process is multi-stage, but also improves the service life of the ceramic coating layer made of alumina and zirconia of the composition ratio as described above. There is a need to extend it.

본 발명의 목적은 세라믹 독터블레이드에 있어서, 세라믹 코팅층 형성방법을 보다 효과적으로 개선하고 코팅층의 세라믹 성분 및 조성비율을 개선하므로서 코팅층의 내마모성 및 경도를 증대하여 독터블레이드의 수명을 연장하는데 그 특징이 있는 것이다.An object of the present invention is to increase the wear resistance and hardness of the coating layer to extend the life of the doctor blade by improving the ceramic coating layer forming method more effectively and improving the ceramic component and composition ratio of the coating layer in the ceramic doctor blade. .

이하 본 발명에 따른 세라믹 독터블레이드의 코팅층 형성방법 및 코팅층의 세라믹 성분 및 그 조성비율에 대하여 상세하게 설명하기로 한다.Hereinafter, a method of forming a coating layer of the ceramic doctor blade according to the present invention, a ceramic component of the coating layer, and a composition ratio thereof will be described in detail.

제1공정은 연마공정으로 탄소강판의 양측면을 매끄럽게 평면연마하고, 일측면 즉 코팅하고자 하는 면에 일정한 직사각을 주어 날을 세우는 베벨연마를 한다음 제2공정으로 베벨연마면에 800Ni-20Cr 혼합물로서 플라스마 코팅하는 제1차 금속 코팅을 하고, 제3공정으로 세라믹 코팅을 하고자 하는 면 이외의 면에 비닐테이프로 마스킹 처리하고 제4공정으로 세라믹 혼합분말로서 플라스틱 코팅하는 제2차 세라믹코팅을 행하고 제5공정으로 세라믹코팅층 위에 에폭시나 왁스를 도파하여 세라믹코팅층에 형성된 기공을 메꾸어 주는 실링(sealing) 공정을 행하여 다음에 행하는 연마공정시 코팅층의 파손을 미연에 방지하고 제6공정으로 평면연마와 베벨연마를 행하는일정 크기로 재단 절단한다음 검사후 출하한다.The first step is a polishing process to smoothly planar polish both sides of the carbon steel sheet, and to bevel polish the blade by giving a certain rectangle to one side, that is, the surface to be coated, and then to the second step as 800Ni-20Cr mixture on the bevel polishing surface. Plasma coating is performed on the first metal coating, and on the other side of the surface to be ceramic coated in the third process, masking is performed with vinyl tape, and in the fourth process, the second ceramic coating is performed on the plastic coating as the ceramic mixed powder. Sealing process that fills the pores formed in the ceramic coating layer by wavering epoxy or wax on the ceramic coating layer in 5 steps to prevent damage of the coating layer in the next polishing process and planar polishing and bevel polishing in the 6th process. Cut it to a certain size, and then ship it after inspection.

그리고, 상기와 같은 방법으로 독터블레이드의 세라믹 코팅층을 형성함에 있어 코팅층의 세라믹 성분 및 그 조성비율을 살펴보면 제1수단으로 부피비율로서 87％ Al2O3- 13％TiO2, 제2수단으로 70％ Al2O3- 30％ Cr2O3, 제3수단으로서 80％ Al2O3-20％ ZrO2의 성분과 조성비율을 사용한다.And, in the following form the ceramic coating of the doctor blade in the same manner as looking for the ceramic components and the composition ratio of the coating layer the first means volume ratio 87% Al 2 O 3 as a - a 13% TiO 2, the second means 70 % Al 2 O 3 - 30% Cr 2 O 3, use 80% Al 2 O 3 -20% ZrO 2 component in the composition ratio as the third means.

상기와 같은 구성 및 작용을 갖는 본 발명에 따른 세라믹 독터블레이드의 세라믹코팅층 형성방법과 세라믹성분 및 그 조성비에 의한 세라믹 독터블레이드는 기존의 세라믹 독터블레이드에 비하여 그 제조방법상 블라스팅처리를 행하지 아니하므로 그만큼 경제적이라 할 것이며, 또한 기존의 세라믹 독터블레이드에 비하여 내마모율이 향상되어 사용수명이 길어졌음을 다음 실험결과로 얻은 독터블레이드 수명 비교표에 의하여 증명된다 할 것이다.The ceramic coating layer forming method and the ceramic component and the composition ratio of the ceramic doctor blade according to the present invention having the above-described configuration and operation are not performed by blasting in the manufacturing method as compared to the conventional ceramic doctor blade. It is economical, and the wear life is improved compared to the existing ceramic doctor blade, and the service life is extended.

Claims (4)

탄소강판의 양측면을 평면 연마한후 일측면을 베벨연마하고 베벨연마한 면에 80％ Ni - 20％ Cr 분말제로 플라스마 코팅한다음 세라믹 코팅하고자 하는면에 세라믹 성분의 분말혼합체로 플라스마 코팅하며 세라믹 코팅층을 평면 베벨연마를 행하여 일정 크기로 재단 절단하는 세라믹 독터블레이드의 코팅층 형성방법.Plane polishing both sides of the carbon steel plate, bevel polishing one side, plasma coating the bevel polished surface with 80% Ni-20% Cr powder, and then coating the surface to be ceramic coated with a powder mixture of ceramic components. Method of forming a coating layer of a ceramic doctor blade to cut the cutting to a certain size by performing a flat bevel polishing. 제1항에 있어서, 세라믹코팅층의 세라믹성분 및 조성비율을 87％ Al2O3- 13％ TiO2로 한 세라믹 독터블레이드의 세라믹코팅층 조성물.The method of claim 1, wherein the ceramic component and the mole fraction of the ceramic coating layer 87% Al 2 O 3 - ceramic coating layer composition of the ceramic doctor blade to a 13% TiO 2. 제1항에 있어서, 세라믹 코팅층의 세라믹 성분 및 조성비율을 70％ Al2O3- 30％ Cr2O3로 한 세라믹 독터블레이드의 세라믹 코팅층 조성물.The method of claim 1, wherein the ceramic component and the mole fraction of the ceramic coating layer 70% Al 2 O 3 - ceramic coating layer composition of the ceramic doctor blade to a 30% Cr 2 O 3. 제1항에 있어서, 세라믹 코팅층의 세라믹 성분 및 조성비율을 80％ Al2O3- 20％ ZrO2로 한 세라믹 독터블레이드의 세라믹 코팅층 조성물.The method of claim 1, wherein the ceramic component and the mole fraction of the ceramic coating layer 80% Al 2 O 3 - ceramic coating layer composition of a ceramic doctor blade as 20% ZrO 2.
KR1019980004648A 1998-02-16 1998-02-16 Coating layer composite and coating method of ceramic docter blade KR100251378B1 (en)

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Publication number Priority date Publication date Assignee Title
KR20200087040A (en) * 2019-01-10 2020-07-20 김동원 Apparatus for decomposition of organic matter
KR102152111B1 (en) * 2019-01-10 2020-09-04 김동원 Apparatus for decomposition of organic matter
KR102152114B1 (en) * 2019-07-16 2020-09-04 김동원 Decomposition apparatus of organic and inorganic matter
KR20210009016A (en) * 2019-07-16 2021-01-26 김동원 Decomposition apparatus of organic and inorganic matter for vehicles
KR102266029B1 (en) * 2019-07-16 2021-06-16 정세현 Decomposition apparatus of organic and inorganic matter for vehicles

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