KR20010077722A - Method of manufacturing grind stone use for a carbide alloy powder - Google Patents
Method of manufacturing grind stone use for a carbide alloy powder Download PDFInfo
- Publication number
- KR20010077722A KR20010077722A KR1020000005725A KR20000005725A KR20010077722A KR 20010077722 A KR20010077722 A KR 20010077722A KR 1020000005725 A KR1020000005725 A KR 1020000005725A KR 20000005725 A KR20000005725 A KR 20000005725A KR 20010077722 A KR20010077722 A KR 20010077722A
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- KR
- South Korea
- Prior art keywords
- cemented carbide
- binder
- manufacturing
- alloy powder
- mold
- Prior art date
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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
- B22F8/00—Manufacture of articles from scrap or waste metal particles
-
- 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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Description
본 발명은 수명이 다한 초경합금제품을 기계적 파쇄 및 분쇄과정을 거쳐 분말상으로 하거나 화학적 처리를 거쳐 분말상으로 제조된 폐분쇄초경합금분말을 용융금속과 혼합 및 가압하여 연삭숫돌을 제조하는 방법에 관한 것이다.The present invention relates to a method for producing a grinding wheel by mixing and pressurizing a cemented carbide product powder, which has been at the end of its service life, into a powdery form through mechanical crushing and grinding or by chemical treatment with a molten metal.
현재 금속제품등의 연마용으로 사용되는 세라믹계 연삭숫돌은 값이 저렴한 반면 내구성이 떨어지는 문제점이 있고 다이아몬드계 연삭숫돌은 내구성이나 연삭성능에서는 기존의 어떠한 연삭숫돌보다 뛰어나지만 값이 비싸다는 문제점이 있으며 최근에 초경합금분말이나 폐초경합금분말을 이용하여 연마지석이나 연마포를 제조하는 방법이 공지되어 있는데 이방법은Ceramic grinding wheels, which are currently used for polishing metal products, are inexpensive but have low durability. Diamond grinding wheels are more expensive than other grinding wheels in terms of durability and grinding performance, but are expensive. Recently, a method of manufacturing abrasive grind or abrasive cloth using cemented carbide powder or waste cemented carbide powder is known.
초경합금분말과 결합제로 사용되는 경금속 분말을 혼합하여 일정한 크기의 강판위에 골고루 분산시켜 놓고 400∼1500℃의 환원성 전기로속에서 가열하는 방법이다.The cemented carbide powder and the light metal powder used as the binder are mixed and uniformly dispersed on a steel plate of a certain size and heated in a reducing electric furnace at 400-1500 ° C.
이 방법은 철판위에 접착을 위한 용제를 도포하고 그 위에 초경합금 분말과 결합제용 금속분말을 혼합한 혼합분말을 살포 분산한 후 전기로 속에서 가열하면 결합제용 금속분말이 용융되어 초경합금분말을 일정한 형태로 성형하는 방법이나This method is applied by applying a solvent for adhesion on the iron plate, spraying and dispersing the mixed powder mixed with cemented carbide powder and binder metal powder on it and then heated in an electric furnace to melt the binder metal powder to form a cemented carbide powder How to mold
철판위에 초경합금 분말과 결합제용 금속분말을 혼합하여 일정두께로 살포하는 과정에서 초경합금부의 두께가 일정치 않다는 문제점과 철판과 초경합금간의 밀착력이 떨어져 사용중에 연마구의 불량발생이 많다는 것이 문제점으로 대두되고 있다.In the process of spraying cemented carbide powder and metal powder for binder on the iron plate and spraying them to a certain thickness, problems of irregular thickness of cemented carbide parts and poor adhesion between iron plate and cemented carbide are often caused by problems of poor polishing tools during use.
본 발명은 상기한 제반문제점을 해결하기 위한 것으로써 분쇄한 초경합금분말을 일정한 형태의 금형에 장입하고 여기에 결합제용 용융금속을 주입하여 가압주조하는 방법을 기술적 과제로 하고 있다.In order to solve the above-mentioned problems, the present invention has a technical problem in which a pulverized cemented carbide powder is charged into a mold of a certain shape and injected with a molten metal for a binder to press-cast.
도 1은 연삭숫돌제조장치의 개략적인 구성도.1 is a schematic configuration diagram of a grinding wheel manufacturing apparatus.
<도면 주요부분에 대한 부호의 설명><Description of Symbols for Main Parts of Drawing>
1 : 금형 2 : 폐초경합금분말1: mold 2: waste cemented carbide powder
3 : 결합제용 용융금속 4 : 가압용 상부 피스턴3: molten metal for binder 4: upper piston for pressurization
5 : 실린더 6 : 하부 피스톤5: cylinder 6: lower piston
상기한 기술적 과제를 해결하기 위해 본 발명은 일정한 형태의 연삭숫돌금형을 만들고 상기 금형(1)내에 폐초경합금분말(2)을 장입한다.In order to solve the above technical problem, the present invention creates a grinding wheel mold of a certain shape and charges the cemented carbide cement powder (2) into the mold (1).
상기 초경합금분말이 채워진 금형을 적당한 온도로 예열한 후 하부 피스턴(6)을 사용하여 실린더(5)내에 삽입시킨 후 압력이 가해진 상태에서 용융된 결합제용 금속(3)의 적당량을 실런더에 주입하고 가압용 피스턴(4)을 이용하여 압력을 가하면 초경합금분말의 사이사이로 결합제용 용융금속이 채워지면서 응고되어 초경합금용 연삭숫돌이 제조된다.After pre-heating the mold filled with the cemented carbide powder to a suitable temperature, it is inserted into the cylinder (5) using the lower piston (6), and then injected into the cylinder with an appropriate amount of molten binder metal (3) under pressure. When pressure is applied using the pressure piston (4), the cemented metal is solidified while the binder is filled with molten metal between the cemented carbide powders, thereby producing a grinding wheel for cemented carbide.
이때 피스톤 압력은 초경합금분말의 입도·결합제용 용융금속에 따라 약간씩 달라질 수 있지만 20kg/㎠에서 1000kg/㎠ 내에서 이루어진다.At this time, the piston pressure may vary slightly depending on the particle size of the cemented carbide powder, the molten metal for the binder, but is made within 20kg / ㎠ to 1000kg / ㎠.
결합제용 용융금속은 동계합금이나 알루미늄계합금 또는 철계합금등이 주로사용되고 분쇄된 초경합분말의 입도는 30㎛ 에서 700㎛까지 다양하게 사용된다.As the molten metal for the binder, copper alloy, aluminum alloy, or iron alloy are mainly used, and the pulverized cemented carbide powder has various particle sizes ranging from 30 μm to 700 μm.
그리고 이건 발명에서는 금형의 형태를 연삭숫돌의 형태로 하고 있으나 연삭숫돌이외의 연마지석이나 연마구를 만들때에는 금형의 형태를 제조하고자 하는 연마지석이나 연마구의 형태로 자유로히 변경 사용할 수 있다.In the present invention, the shape of the mold is in the form of grinding grindstone, but when the grinding grindstone or grinding tool other than the grinding wheel is made, it can be freely used in the form of grinding grindstone or grinding tool to manufacture the shape of the mold.
이상에서 설명한 바와 같이 본 발명은 폐초경합금을 이용하여 연마구인 연삭숫돌등을 간단히 제조하는 제조방법으로써 기존의 세라믹 연삭숫돌 또는 다이아몬드계 연삭숫돌에 비해 그 내구성이 대폭 향상되고 값도 저렴하며 품질도 향상되는 효과가 있고As described above, the present invention is a manufacturing method for manufacturing a grinding wheel, such as a grinding tool, using waste cemented carbide, and its durability is significantly improved, its value is low, and its quality is improved, compared to conventional ceramic grinding wheels or diamond-based grinding wheels. Has the effect of
철판위에 폐초경합금분말과 결합제용 금속분말을 혼합하여 가열 용융 응고시키는 디스크타입의 연마구 제조방법보다 제품의 두께가 균일하고 연삭성능도 향상된 효과가 있는 연삭 숫돌제조방법이다.It is a grinding wheel manufacturing method that has a uniform thickness of the product and improved grinding performance than the disk type grinding tool manufacturing method which mixes waste cemented carbide powder and metal powder for binder by heating and solidifying on steel plate.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020000005725A KR20010077722A (en) | 2000-02-08 | 2000-02-08 | Method of manufacturing grind stone use for a carbide alloy powder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020000005725A KR20010077722A (en) | 2000-02-08 | 2000-02-08 | Method of manufacturing grind stone use for a carbide alloy powder |
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| Publication Number | Publication Date |
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| KR20010077722A true KR20010077722A (en) | 2001-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1020000005725A KR20010077722A (en) | 2000-02-08 | 2000-02-08 | Method of manufacturing grind stone use for a carbide alloy powder |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63219502A (en) * | 1987-03-10 | 1988-09-13 | Hitachi Tool Eng Ltd | Method for molding sintered head alloy powder |
| JPH024905A (en) * | 1988-03-07 | 1990-01-09 | Yoshinobu Kobayashi | Revolving cutting tool of drill, end mill or the like and manufacture thereof |
| JP2001339022A (en) * | 1999-12-24 | 2001-12-07 | Ngk Insulators Ltd | Heat sink material and its manufacturing method |
-
2000
- 2000-02-08 KR KR1020000005725A patent/KR20010077722A/en active IP Right Grant
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63219502A (en) * | 1987-03-10 | 1988-09-13 | Hitachi Tool Eng Ltd | Method for molding sintered head alloy powder |
| JPH024905A (en) * | 1988-03-07 | 1990-01-09 | Yoshinobu Kobayashi | Revolving cutting tool of drill, end mill or the like and manufacture thereof |
| JP2001339022A (en) * | 1999-12-24 | 2001-12-07 | Ngk Insulators Ltd | Heat sink material and its manufacturing method |
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