A manufacturing method of the roll for hot-rolling equipment

Japanese Patent JP5976535

B2

A roll suitable for use in hot-rolling apparatuses is provided at low cost, the roll comprising a roll base which has a high hardness and is less apt to suffer deformation damages such as dents and a coating film formed on the surface of the roll base by thermal spraying, the coating film having excellent adhesion, wear resistance, and steel-sheet-conveying properties. Also provided is a process for advantageously producing the roll. The surface of a roll base comprising a steel which contains 0.9-3.2 mass% Cr and has a carbon equivalent Ceq, defined by equation (1), of 0.45-1.65 mass% is coated by thermal spraying with a coating film constituted of a self-fluxing alloy containing hard ceramic particles. Thereafter, the coated roll base is subjected to fusing treatment in a non-oxidizing atmosphere to form a diffusion layer having a thickness of 30-200 µm between the coating film formed by thermal spraying and the roll base, and is then cooled or heat-treated. Thus, the roll base is made to have a hardness of 35-60 in terms of Shore hardness HS.

Noriyuki Yasuo
Miyajima Naoki
Hong Myung Soo

JP2012518203A

August 23, 2016

May 31, 2010

Click for automatic bibliography generation  

Tocalo Co., Ltd.
Hong Myung Soo

C23C4/06; B21B27/00; B21C47/00; B21C47/06; C22C38/00; C22C38/22; C22C38/24; C23C4/10; C23C4/129; C23C4/134; C23C4/18; C23C10/28

JPH0967054A	1997-03-11
JP2004069048A	2004-03-04
JP2008291300A	2008-12-04
JP2000282216A	2000-10-10
JPS5713166A	1982-01-23
JPH02197554A	1990-08-06
JP2003334691A	2003-11-25
JPH0586453A	1993-04-06
JP2004069048A	2004-03-04
JPH0967054A	1997-03-11

Ginza Marronnier Patent Office

Previous Patent: A generation method and a device of an exclusive standard signal

Next Patent: SORPTION AGENT AND ITS PRODUCTION