Title:
EXHAUST GAS GROUP EQUIPMENT IN INTERNAL-COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JPS6170119
Kind Code:
A
Abstract:
PURPOSE:To obtain a heat insulating refractory material coating prevented from being easily damaged, by equipping a metallic layer by surface reaction on the internal surface of a metallic exhaust pipe line member and forming a coating layer of heat insulating refractory material. CONSTITUTION:A cast iron made manifold 1, being cooled after it is held being heated, forms an oxidized film layer 2 on an internal surface brought into contact with exhaust gas and this layer applies a water glass 3 further with an alumina dust 4 adhering as a heat insulating refractory material. Subsequently, the manifold forms the first layer by holding the layer 2 to be heated. Hereafter, the alumina dust adheres by applying again the water glass. Here the dust adheres to a thickness of about 2mm. In this way, the molded insulating layer, even if it is dried and heated, is prevented from generating a crack and exfoliation.
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Inventors:
YANO MITSURU
Application Number:
JP19235784A
Publication Date:
April 10, 1986
Filing Date:
September 13, 1984
Export Citation:
Assignee:
HITACHI METALS LTD
International Classes:
C23C24/08; C23C22/00; C23C22/82; C23C26/00; C23C28/00; C23C28/04; F01N13/14; (IPC1-7): C23C22/82; C23C26/00; C23C28/00; F01N7/14
Attorney, Agent or Firm:
Takaishi Tachibana
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