公开(公告)号：US3853580A

公开(公告)日：1974-12-10

申请号：US24513272

申请日：1972-04-18

Applicant: NAT STATE BANK

Inventor： GOURDINE M

IPC: B05B5/03 ,  B05B5/08 ,  B05B5/02

CPC classification number: B05B5/08 ,  B05B5/001 ,  B05B5/032

Abstract: Method for applying coating materials to articles, using electrogasdynamic apparatus providing a flow channel having a dielectric boundary which has a length/width ratio of greater than 2.5. Gas containing particulate coating material is ionized to create an electrical discharge field for imparting an electrical charge to the particles prior to passage through the dielectrically bounded flow path and thereby creating a high space charge potential. In special applications, a free-radical forming monomer gas or a fusible particle substance is carried in an inert gas into the electrical discharge field and through the flow channel toward the article to be coated. In any case, the charged particles are subjected to an axial charge repelling field (due to space charge effects) in the flow channel to raise the electrical potential of the particles, and thereby the potential gradient between the particles and the workpiece.

Abstract translation: 使用提供具有长度/宽度比大于2.5的电介质边界的流动通道的电动气动力装置将涂覆材料施加到制品上的方法。 包含气体的颗粒状涂层材料被电离以产生放电场，用于在通过介电界限流动路径之前给颗粒施加电荷，从而产生高的空间电荷电势。 在特殊应用中，将自由基形成单体气体或易熔颗粒物质以惰性气体的形式携带到放电场中，并通过流动通道朝向被涂物品运送。 在任何情况下，带电粒子在流动通道中受到轴向电荷排斥场（由于空间电荷效应），以提高颗粒的电势，从而在颗粒和工件之间产生电位梯度。