公开(公告)号：DE19730231A1

公开(公告)日：1999-01-21

申请号：DE19730231

申请日：1997-07-15

Applicant: ABB RESEARCH LTD

Inventor： BOERNER GUNTER DR ING ,  NIENBURG HANS CHRISTOPH DIPL C ,  SOPKA JOERG DR RER NAT

IPC: B05B5/00 ,  B05B5/025 ,  B05B5/047 ,  B05D1/06 ,  C09D5/46

Abstract: The coating involves at least two applicators (1,2), a corona spray gun and a tribo spray gun. One applicator (1) sprays the workpiece with positive charged particles of the covering material and the other applicator sprays it with negative charged particles. The two applicators work at the same time. The application of the particles of different charge at the same time means that the surface charge is less than when there is only one application of particles of one charge so the covering is thicker. Alternatively two applicators spray two different materials each having a different electric charge. The covering is sprayed alternating between the two applicators and thin layers are sprayed.

公开(公告)号：DE19614192A1

公开(公告)日：1997-10-16

申请号：DE19614192

申请日：1996-04-10

Applicant: ABB RESEARCH LTD

Inventor： AHLBERT ENAR ,  JOHANSSON LARS-ERIK ,  BOERNER GUNTER DR ING ,  NIENBURG JOHANN DR ,  PUHANE ANTON

IPC: B05D1/04 ,  B05B5/025 ,  B05B5/03 ,  B05B7/10 ,  B05D1/06 ,  B05B7/14 ,  B05B1/26 ,  B05B5/16

Abstract: The dispersal system has a hollow body (3) through which the air-powder mixture (16) is fed in the axial spray direction, with a pressurised control air stream (6) directed on to the mixture tangentially at one or more points. The air/powder mixture is subjected to both axial and tangential pulsations for divergence of the mixture to form a wide powder cloud (15). Nozzles of several shapes and bores are shown, with HV electrode 14.

公开(公告)号：DE19606214A1

公开(公告)日：1997-08-21

申请号：DE19606214

申请日：1996-02-20

Applicant: ABB RESEARCH LTD

Inventor： BOERNER GUNTER DR ING ,  NIENBURG JOHANN DR ,  SOPKA JOERG DR ,  WITTMANN JOSEF

IPC: B05B5/025 ,  B05B5/03 ,  B05B5/08 ,  B05B5/16 ,  B05B7/14 ,  B05D1/02 ,  B65G65/40 ,  B05B7/24

Abstract: The method involves a container (2) with a drain pipe (25). Air is introduced into the pipe through an opening and the adjustable air pressure controls the mass flow through the pipe from zero to a maximum value. The container is part of a powder spraying unit (1) and the powder is removed from a fluidised bed in the middle of it.

公开(公告)号：DE19537089A1

公开(公告)日：1997-04-10

申请号：DE19537089

申请日：1995-10-05

Applicant: ABB RESEARCH LTD

Inventor： BOERNER GUNTER DR ING ,  NIENBURG HANS-CHRISTOPH DIPL C ,  BOEHME HELMUT PROF DR ING ,  SOPKA JOERG DIPL PHYS DR RER N ,  KLEBER WOLFGANG PROF DR ING

IPC: B05B1/16 ,  B05B5/03 ,  B05B5/04 ,  B05B5/16 ,  B05B7/14 ,  B05D1/06 ,  B05B1/26

Abstract: The method has the fluidisation occurring in a twin chambered device (2), the first chamber (3 )receiving the compressed air that then passes through a "frit" to the second chamber(4). The powder in the second chamber leaves the device from the nozzle (11) and is charged up. The powder is filled through the hole (9) which can be closed off. Apart from the nozzle and the air inlet and outlet valves (17,19), the fluidisation takes place in a closed chamber, the valves being used to maintain the correct pressure proportions. Additional mechanical energy is passed to the fluidised bed of the second chamber in the form of vibration.