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1. 发明专利

JPH08121464A ROLL FOR HEAT ROLL PLANT WINDING MACHINE 失效
公开(公告)号：JPH08121464A
公开(公告)日：1996-05-14
申请号：JP28249094
申请日：1994-10-24
申请人： NITTETSU HARD KK
发明人： TSUKASAKI KOICHI , KAI KUNINORI
IPC分类号： B65H27/00 , B21C47/00 , B21C47/06 , B23K9/04 , C23C4/06 , C23C6/00 , C23C28/00 , F16C13/00
摘要： PURPOSE: To prolong the service life by forming a hardening padding welding layer of specific hardness or higher in a barrel part surface of an iron system roll, and further forming thereon a self melting hardening alloy flame spraying layer, so as to prevent occurrence and spalling of a flame spraying layer cracking. CONSTITUTION: A hardening padding welding layer B of Hs50 or higher hardness is formed on a barrel part surface of an iron system roll C, further to form thereon a self fusing hardening alloy flame spraying layer A. Here, also hardness of the self fusing hardening alloy flame spraying layer A is set to Hs50 or higher, thickness of the hardening padding welding layer B is set to 3mm or more of single padding and thickness of the self fusing hardening alloy flame spraying layer A is set to 0.1mm or more of single padding, also preferable to apply fusing treatment to this flame spraying layer A. Thus, by using an iron system as the roll material C particularly using a low carbon low alloy system material of good weldability, and by combining the hardening padding layer B and the self fusing alloy flame spraying layer A applied, quality of a product is improved, also to increase its durability with use for a long period made capable.

2. 发明专利

JPH0967054A ROLLER FOR WINDING EQUIPMENT IN HEAT ROLLING FACTORY 失效
公开(公告)号：JPH0967054A
公开(公告)日：1997-03-11
申请号：JP24389195
申请日：1995-08-30
申请人： NITTETSU HARD KK , NIPPON STEEL CORP
发明人： KATAYAMA TOSHIYUKI , KAI KUNINORI , KUMADE SAKUHIKO
IPC分类号： B65H27/00 , B21B27/00 , B21B39/00 , B21C47/00 , B21C47/06 , B23K9/04 , C21D9/68 , C23C4/02 , C23C4/06 , C23C6/00 , C23C28/00 , F16C13/00
摘要： PROBLEM TO BE SOLVED: To improve wear resistance, plate through resistance and plate flaw resistance by forming a substrate hardened overlay layer and a carbide fine- grain dispersed type self-melting alloy flame-sprayed layer of specific wall thickness or more on the surface of a drum part of a roller. SOLUTION: In each roller in a down coiler or the like equipped in a winding equipment part in an iron manufacturing equipment heat rolling factory, a substrate hardened overlay layer 3 is formed on the surface of a drum part 4 of the roller, and a carbide grain dispersed type self-melting alloy flame- sprayed layer 2 of 0.5mm or more in wall thickness is further formed thereon. This self-melting alloy flame-sprayed layer 2 contains carbide grain or compound carbide grain at 3-60wt%, and the size of carbide grain is 3-300μm in a granular or flake state. Base metal (Ni, Co, Fe) of the flame-sprayed quantity contains primary grain such as WC, Wm Cn , WmCn , Cr3 C2 , NBC, VC, MoC, TiC and SiC, and grain fused, ground, granulated and coated by binder metal.

3. 发明专利

JPS5978794A Mechanical parts for iron making having wear resistance 失效
标题翻译：机械制造具有耐磨性的机械部件
公开(公告)号：JPS5978794A
公开(公告)日：1984-05-07
申请号：JP18867782
申请日：1982-10-27
申请人： Nittetsu Hard Kk
发明人： YAMAMOTO TAKAHARU , KAI KUNINORI , YOKOI KIYOSHI
IPC分类号： F16C33/12 , B23K9/04 , B23K35/32 , C22C29/06 , C22C29/08 , C22C29/10 , C22C32/00
CPC分类号： B23K35/327
摘要： PURPOSE:To improve the wear resistance of mechanical parts for iron making by forming a hardened and build-up layer wherein carbide particles of W, Nb, V, Ti are dispersed in a matrix. CONSTITUTION:A hardened and build-up layer is formed by dispersing carbide particles of carbide such as W, Nv, V, Ti in a matrix consisting of Fe, Ni, Co as a base in mechanical parts, such as various liners in iron works, which are made of Fe, Ni, Co having the hardened and build-up layer as a base. The unmolten lumped or spherical particles having -8-+30 mesh are used for the carbide particles, and the ratio between the carbide particles and the base part is kept at a ratio of the area of the carbide particles: the area of the base part=4-6:6-4.
摘要翻译：目的：通过形成硬化和堆积层来提高制铁机械零件的耐磨性，其中W，Nb，V，Ti的碳化物颗粒分散在基体中。构成：通过将诸如W，Nv，V，Ti的碳化物的碳化物颗粒分散在由Fe，Ni，Co组成的基体中作为基础的机械部件如铁制品中的各种衬里而形成硬化和堆积层，其由具有硬化和堆积层作为基底的Fe，Ni，Co制成。碳化物颗粒使用具有8 + 30目的未熔融集体或球形颗粒，并且碳化物颗粒与基体部分之间的比率保持在碳化物颗粒的面积之比：基体部分的面积 = 4-6：6-4。

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