Novel wear-resistant laser-engraved ceramic or metallic carbide surfaces for friction rolls for working elongate members
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B21B-027/00
출원번호
US-0811334
(1985-12-20)
발명자
/ 주소
Meyerhoff Robert W. (Zionsville IN) Hill Richard C. (Charlotte NC)
출원인 / 주소
Union Carbide Corporation (Danbury CT 02)
인용정보
피인용 횟수 :
33인용 특허 :
21
초록▼
The invention is to friction rolls for working elongate members, e.g., webs or strands, such as crimper rolls, draw rolls, yarn package drive rolls comprising a roll having a generally cylindrical external surface and a ceramic, e.g., alumina, mixtures of alumina and titania, chromia, zirconia, or m
The invention is to friction rolls for working elongate members, e.g., webs or strands, such as crimper rolls, draw rolls, yarn package drive rolls comprising a roll having a generally cylindrical external surface and a ceramic, e.g., alumina, mixtures of alumina and titania, chromia, zirconia, or metallic carbide, e.g., tungsten carbide, coating bonded to the external surface, the coating being laser-engraved, that is, having a plurality of laser-formed depressions having a pattern covering substantially the entire exterior working surface of the roll and providing a uniform, wear-resistant surface texture over substantially the entire working surface.
대표청구항▼
A friction roll for performing work on an elongate solid material by frictional contact therewith comprising a roll having an external surface defining a working surface and a ceramic or metallic carbide coating bonded to said working surface, said coating having a plurality of laser-formed depressi
A friction roll for performing work on an elongate solid material by frictional contact therewith comprising a roll having an external surface defining a working surface and a ceramic or metallic carbide coating bonded to said working surface, said coating having a plurality of laser-formed depressions having a pattern providing a substantially uniform, wear-resistant recast surface to said working surface, said recast surface providing a different morphological structure than the coating and providing a consistent coefficient of friction over a roughness range from about 20 to 1000 Ra, said coefficient of friction measured with a Shirley frictometer using a 150 denier nylon yarn at 10 grams tension and a surface speed of 260 yards per minute. Method of forming a friction roll for performing work on an elongate solid material by frictional contact with said elongate solid material, said roll having an external surface defining a working surface comprising the steps of bonding a ceramic or metallic carbide coating to said working surface and laser-engraving the coating on said working surface with a plurality of depressions having a pattern covering substantially the entire said working surface and said laser-engraving step providing a uniform, wear-resistant surface texture of recast coating formed by said laser-engraving step over substantially the entire said working surface, said recast surface providing a different morphological structure than the coating and providing a consistent coefficient of friction as measured with a Shirley frictometer using a 150 denier nylon yarn at 10 grams tension and a surface speed of 260 yards per minute.
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