Title:
【発明の名称】高温プラズマジェットを使用して花こう岩表面を処理するための方法と装置
Document Type and Number:
Japanese Patent JPH04504986
Kind Code:
A
Abstract:
PCT No. PCT/CA90/00144 Sec. 371 Date Nov. 1, 1991 Sec. 102(e) Date Nov. 1, 1991 PCT Filed May 1, 1990 PCT Pub. No. WO90/13406 PCT Pub. Date Nov. 15, 1990.The method and apparatus treat a surface of natural rock or artificial stone-like material to give to this surface an attractive finish. A high temperature jet of plasma and a high speed jet of cooling fluid are projected onto the surface to be treated. The two jets are moved on the surface at a given speed with the jet of cooling fluid following the plasma jet. The speed of movement is selected so that the high temperature plasma jet heats only a thin superficial layer of rock or stone-like material. As the jet of cooling fluid follows the jet of plasma, it suddenly cools the thin superficial layer just heated by the plasma jet to cause a thermal shock which bursts particles of rock or stone-like material at the surface thereof, and blows these particles off the rock surface.
Inventors:
The Yulewitsu, The Luji
Bro, Maher
Roar, Clermont
Bro, Maher
Roar, Clermont
Application Number:
JP50713890A
Publication Date:
September 03, 1992
Filing Date:
May 01, 1990
Export Citation:
Assignee:
University Doe Shwabletsk
International Classes:
B28D1/00; C04B41/00; C04B41/53; E01C23/08; (IPC1-7): B28D1/00; C04B41/00
Domestic Patent References:
| JPS51115166A | 1976-10-09 | |||
| JPS5663886A | 1981-05-30 | |||
| JPS61178480A | 1986-08-11 |
Attorney, Agent or Firm:
Yoshio Kawaguchi (4 outside)