KR100191889B1 - Method of formation of film on the brake drum for washer - Google Patents

Method of formation of film on the brake drum for washer Download PDF

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Publication number
KR100191889B1
KR100191889B1 KR1019960012305A KR19960012305A KR100191889B1 KR 100191889 B1 KR100191889 B1 KR 100191889B1 KR 1019960012305 A KR1019960012305 A KR 1019960012305A KR 19960012305 A KR19960012305 A KR 19960012305A KR 100191889 B1 KR100191889 B1 KR 100191889B1
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South Korea
Prior art keywords
drum
brake drum
washing machine
film
plating
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KR1019960012305A
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Korean (ko)
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KR970070239A (en
Inventor
신두식
손윤호
이남수
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정도철
상신브레이크공업주식회사
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Priority to KR1019960012305A priority Critical patent/KR100191889B1/en
Publication of KR970070239A publication Critical patent/KR970070239A/en
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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
    • C23C4/18—After-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
    • B05B7/22—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed electrically, magnetically or electromagnetically, e.g. by arc
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/002—Pretreatement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/007—After-treatment
    • 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
    • C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
    • C23C4/11—Oxides
    • 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
    • C23C4/134—Plasma spraying

Abstract

본 발명은 세탁기용 버레이크 드럼에 피막을 형성하기 위한 피막 형성방법에 관한 것이다.The present invention relates to a film forming method for forming a film on a washing drum for a washing machine.

종래에는 세탁기용 브레이크 드럼에 다크로도금을 하거나 또는 일반 단조품을 사용하므로서 내구성이 약해 제동시 도금이 쉽게 박리되고 드럼의 마모 및 소음 발생이 심하며 이때 발생된 도금분은 외부로 유출되지 못하고 잔류하게 되므로 제동력에 영향을 미치고, 마찰제의 특성을 변화시켜 사용수명이 단축되는 등의 문제점이 있었다.Conventionally, the plating of the brake drum for washing machine or the use of a forged product is weak, so that the plating is easily peeled off during braking, the drum is abrasion and noise is generated, and the generated plating powder does not leak to the outside and remains. There was a problem such as affecting the braking force and shortening the service life by changing the characteristics of the friction agent.

이에 본 발명은 단조 가공된 세탁기용 드럼을 유기용제에 침지 시켜 초음파 세척하고, 세척된 브레이크 드럼의 모재표면에 샌드블라스팅을 통하여 오염물질 제거 및 요철을 부여하여 플라즈마 제트(Plasma Jet)를 통하여 산화금속물을 녹여붙여 코팅층을 형성하고, 코팅시 발생된 기공은 열경화성 수지로 봉공처리 한 뒤 요철의 표면을 연마하여 주도록 하므로서 피막의 내구성익 강해 드럼의 마모 및 소음발생이 방지되고 강한 제동력을 얻을 수 있게 되는것이다.Accordingly, the present invention is ultrasonic cleaning by immersing the drum for a washing machine forged in an organic solvent, and removing contaminants and irregularities through sandblasting on the surface of the washed brake drum metal metal through a plasma jet (Plasma Jet) Melting water to form a coating layer, and the pores generated during coating are sealed with a thermosetting resin and then polished the surface of the unevenness, so that the durability of the film is strong, preventing wear and noise of the drum and obtaining strong braking force. That's it.

Description

세탁기용 브레이크 드럼의 피막 형성방법Coating method of brake drum for washing machine

본 발명은 세탁기용 브레이크 드럼의 피막형성방법에 관한 것으로서, 상세하게는 대용량, 고속화 추세에 부응하는 강한 제동력을 얻을 수 있도록 한 것이다.The present invention relates to a method for forming a film of a brake drum for a washing machine, and more particularly, to obtain a strong braking force corresponding to the trend of large capacity and high speed.

세탁기용 브레이크드럼은 일반주철을 소재로 한 것으로서, 종래에는 마찰면에 다크로도금을 하여 사용하므로서 박리 강도가 약해 조기에 도금부위가 박리되므로 마모 및 소음 발생이 심하고, 또 도금분은 브레이크의 구조상 외부로 유출되지 못하고 내부에 잔류하게 되므로 제동시 브레이크 드럼과 마찰재 사이에 도금분이 끼어 제동력이 떨어지게 되고, 이때 도금분이 마찰재에 달라 붙게되면 마찰재의 성질까지도 변화시켜 사용수명이 단축되고, 이는 마찰재의 교제없이는 영구적인 제동력저하의 원인으로 작용하게된다.The brake drum for washing machine is made of ordinary cast iron. In the past, the plating surface is peeled off prematurely due to its weak peel strength due to the dark plating on the friction surface. Since it is not leaked to the outside and remains inside, the braking force is reduced between the brake drum and the friction material during braking, and the braking force is reduced. Without it, it causes permanent braking force.

더욱이 도금시 사용되는 다크로는 최근 시험결과 마찰갯수를 떨어뜨리고 도 그 제동력은 최대 약90~120kgf.cm인 것으로 밝혀짐에 따라 갈수록 대용량, 고속화 추세에 있는 업계실정에 따라 최소한 150kgf.cm 이상의 제동력이 요구되는 세탁기에 적용할 겨우 치명적인 결함을 지니게 되므로 적용이 불가능하다.In addition, as a result of the recent test results, the dacro used in plating reduces the number of friction and the braking force is up to about 90 ~ 120kgf.cm. This application is not possible because it has only a fatal defect to be applied to the required washing machine.

또한 일부 회사에서는 스프링의 힘을 변화시켜 강한 제동력을 얻도록 한 것도 있으나 스프링의 강한 힘은 브레이크의 강한 힘을 브레이크라이닝의 과부하로 직결되어 과마모, 제동력불균일, 소음발생 등의 문제점들을 조기에 발생시키게 되므로 이 역시 부적합한 조치로 알려지고 있다.In addition, some companies have changed the force of the spring to obtain a strong braking force, but the strong force of the spring is directly connected to the overload of the brake lining, causing problems such as excessive wear, nonuniform braking force, and noise. This is also known to be inadequate.

따라서 업계에서는 최소한 150kgf.cm이상의 제동력을 얻을 수 있는 세탁기용 브레이크드럼의 개발이 시급하고도 절실히 요구되고 있는 실정이다.Therefore, the development of brake drums for washing machines that can obtain a braking force of at least 150kgf.cm is urgently and desperately required in the industry.

이에 본 발명은 상술한 업계의 시급하고도 절실한 요구를 만족시켜주기 위하여 부품의 변경없이 브레이크드럼의 마찰면에 산화 금속물을 녹여 붙여 그표면의 기공은 수지로 봉공 처리하고, 요철은 연마하여 주도록 하므로서, 내구성이 높고, 부식 방지는 물론 특히 마찰특성이 좋은 피막이 형성되도록 하여 강한 제동력을 얻을 수 있도록 한것이다.In order to satisfy the urgent and desperate demands of the industry described above, the present invention melts metal oxides on the friction surface of the brake drum without changing parts, and the pores of the surface are sealed with resin, and the unevenness is polished. Therefore, it is possible to obtain a strong braking force by forming a film having high durability and preventing corrosion and particularly having good friction characteristics.

이하 본 발명의 실시예를 상세히 설명하면 다음과 같다.Hereinafter, an embodiment of the present invention will be described in detail.

[실시예1]Example 1

제1공정1st process

일반 주철을 소재로 단조가공하여 제작된 세탁기용 브레이크 드럼을 유기용제속에 침지시켜 약 2~10분에 걸친 초음파 세척으로 표면의 가공유와 지문 등을 제거한다.The brake drum for washing machine made by forging processing of general cast iron is immersed in the organic solvent to remove the processing oil and fingerprints on the surface by ultrasonic cleaning for about 2 ~ 10 minutes.

제2공정2nd process

샌드블라스팅 머신(모래분사기)을 이용하여 적정입도의 모래를 드럼의 모재 표면에 강하게 분사하여 각종 오염물질을 재차 제거함과 동시에 요철을 부여한다.Sandblasting machine (sandblasting machine) is used to spray sand of proper particle size strongly on the surface of the base material of the drum to remove various contaminants again and to give unevenness.

제3공정3rd process

약 15,000℃의 열이 약 300~500m/sec로 분출되는 플라즈마 제트(plasma jet)에 분말 상태의 사노하금속물을 공급하여 산화 금속물이 제트속에서 용융가속되면서 제2공정에 의해 부여된 브레이크 드럼의 요철면에 골고루 분사되게 하여 용융상태의 산화금속물이 모재표면과 충돌, 변형, 응고 과정을 통하여 코팅층이 형성되게 한다.Brake drum given by the second process as metal oxide is melted and accelerated by supplying powder Sanoha metal substance to the plasma jet that heat of about 15,000 ℃ is sprayed at about 300 ~ 500m / sec Evenly sprayed on the uneven surface of the metal oxide in the molten state to form a coating layer through the collision, deformation and solidification process with the surface of the base material.

이때 제3공정에서 사용되는 분말 상태의 산화금속물은 특정한 일부 금속물로 한정되는 것이 아니라 산화크롬(Cr203),산화알미늄(AL203),산화티탄(TiO2. 그리고 이들을 혼합한 혼합물등과 같이 분말상태나 또는 플라즈마 제트에 의해 단시간에 용융가능한 종류이면 만족한다.At this time, the powdered metal oxide material used in the third process is not limited to a specific metal material, but powders such as chromium oxide (Cr203), aluminum oxide (AL203), titanium oxide (TiO 2 . It is satisfactory if it is a kind meltable in a short time by a state or a plasma jet.

제4공정4th process

제3공정을 통하여 얻은 브레이크 드럼의 코팅층에 열경화성 수지를 살포하여 열경화성 수지가 코팅시 발생된 기공에 침투, 겨오하되게 하여 봉공 처리한다.The thermosetting resin is sprayed onto the coating layer of the brake drum obtained through the third process, so that the thermosetting resin penetrates into the pores generated during the coating and is released therefrom.

제5공정5th process

제4공정에서 봉공처리된 브레이크 드럼은 샌드 페이퍼나 PVC휠 또는 연마휠 등을 이용하여 코팅시 발생된 요철을 연마하여서 완제품을 얻도록 한 것이다.The brake drum sealed in the fourth step is to polish the unevenness generated during the coating using sand paper, PVC wheel or polishing wheel to obtain the finished product.

이와같은 방법으로 제조되는 본 발명은 종래와 같이 브레이크 슈우와 조림하여 사용된다.The present invention produced in such a manner is used by sterilization with a brake shoe as in the prior art.

그러나 본 발명은 코팅제인 산화 금속물이 브레이크 드럼의 마찰면에 플라즈마 제트에 의해 열용융 접착되고, 이때 발생된 기공은 열경화성 수지에 의해 봉공처리되므로 습기나 불순물의 침투 우려가 없어 내구성이 강하고 부식이 방지되는 피막이 형성되며, 또한 피막 표면의 요철면은 연마하여 주므로서 제동시 마몰르 최소화하고, 마찰력을 증대 시켜 줄수 있게된다.However, in the present invention, the metal oxide, which is a coating agent, is hot melt bonded to the friction surface of the brake drum by plasma jet, and the pores generated at this time are sealed by a thermosetting resin, so there is no fear of penetration of moisture or impurities. The film to be prevented is formed, and the uneven surface of the film surface is polished, thereby minimizing wear and tear and increasing frictional force during braking.

따라서 본 발명은 내구성이 강한 피막에 의해 드럼의 마모 및 소음발생이 방지되고 특히 부품의 변경없이도 약 150kgf.cm 이상의 강한 제동력을 얻을 수 있는 유용한 발명인 것이다.Therefore, the present invention is a useful invention that the wear and noise of the drum is prevented by a durable coating, and in particular, a strong braking force of about 150 kgf.cm or more can be obtained without changing parts.

Claims (1)

일반 주철을 소재로 단조가공하여 제작되는 통상의 세탁기용 브레이크 드럼을 유기용제에 침지시켜 초음파 세척하고, 세척된 브레이크 드럼의 모재표면에 샌드 블라스팅을 통하여 오염물질제거 및 요철을 부여한 뒤 플라즈마 제트(PLASMA JET)를 통하여 산화금속물을 녹여 붙여 코팅층을 형성하고, 코팅시 발생된 기공은 열경화성 수지로 봉공 처리하고 그 표면을 연마기로 연마하는 방법으로 제조되는 세탁기용 브레이크 드럼의 피막형성방법.After washing the brake drum for washing machine, which is manufactured by forging with general cast iron, in ultrasonic solvent, it is ultrasonically cleaned, and the contaminant removal and irregularities are applied to the surface of the cleaned brake drum through sand blasting, and then plasma jet (PLASMA) is applied. Method of forming a coating film for a brake drum for a washing machine prepared by melting metal oxides through JET to form a coating layer, and the pores generated during coating are sealed with a thermosetting resin and the surface is polished with a polishing machine.
KR1019960012305A 1996-04-20 1996-04-20 Method of formation of film on the brake drum for washer KR100191889B1 (en)

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Application Number Priority Date Filing Date Title
KR1019960012305A KR100191889B1 (en) 1996-04-20 1996-04-20 Method of formation of film on the brake drum for washer

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KR970070239A KR970070239A (en) 1997-11-07
KR100191889B1 true KR100191889B1 (en) 1999-06-15

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