Method for reducing crushing on catalytic converter carrier in encapsulation process
A catalytic converter and carrier technology, applied in metal processing, metal processing equipment, manufacturing tools, etc., can solve problems affecting product yield, carrier crushing, etc., achieve the effects of reducing impact, simple implementation method, and reducing scrap rate
Inactive Publication Date: 2015-07-29
SHANGHAI TENNECO EXHAUST SYST
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Problems solved by technology
[0003] However, based on the traditional catalytic converter packaging process, the peak packaging pressure of the liner is difficult to avoid, and the carrier is often crushed, which affects the product yield
Method used
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Embodiment Construction
[0031] First, after in-depth research on the phenomenon that the catalytic converter carrier is crushed during the encapsulation process, the inventors found that due to the special properties of the gasket, its pressure changes with time (such as figure 1 shown). In the initial short period of gasket compression, its pressure will rise sharply. This sharply rising pressure will cause a great impact on the catalytic converter carrier, and accidents that the catalytic converter carrier will be crushed often occur.
[0032] The present invention is just based on the technical solution to the technical problem obtained after the above-mentioned theoretical analysis. because figure 1 The pressure performance of the liner shown has an obvious relationship with time. In the initial stage of the liner being compressed, the pressure of the liner is much higher than the pressure presented during the normal service period of the liner. Therefore, the carrier is introduced in this embod...
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Disclosed is a method for reducing crushing on a catalytic converter carrier in the encapsulation process. The method comprises the following steps of providing an installation sleeve assembly which comprises a horn-opening-shaped plugging guide groove; providing a carrier substitute, enabling a liner to wrap the carrier substitute and integrally placing the liner and the carrier substitute into the plugging guide groove; providing the catalytic converter carrier and placing the catalytic converter carrier behind the carrier substitute; providing a plugging pressure head, applying the press-in force to the catalytic converter carrier and pressing the carrier substitute along with the liner into a casing together; further applying the press-in force so as to enable the carrier substitute to be extruded through the catalytic converter carrier; taking out an encapsulated product. According to the method for reducing the crushing on the catalytic converter carrier in the encapsulation process, the peak force which needs to be directly borne by the catalytic converter carrier originally is transferred to the carrier substitute due to the carrier substitute and accordingly the impact of the peak pressure on the catalytic converter carrier is reduced.
Description
technical field [0001] The invention relates to a method for reducing the crushing of a catalytic converter carrier during the encapsulation process, and belongs to the technical field of engine exhaust purification treatment. Specifically, it relates to the field of catalytic converter parts manufacturing, such as the packaging of the three-way catalytic converter carrier of gasoline vehicles, the selective catalytic reduction carrier of diesel vehicles or the packaging of diesel / gasoline particulate traps. Background technique [0002] Traditional catalytic converter packaging uses a simple plug-in packaging process, which can be roughly described as using an internal angled guide groove to pass the gasket-wrapped carrier (usually ceramic material, which is relatively fragile) through a The plug mechanism is pushed into the housing (usually metal) to complete the package. In this process, since the liner is compressed into a small gap from the free state, the purpose of d...
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Patent Timeline
Login to View More IPC IPC(8): B23P19/02
CPCB23P19/02
Inventor 李军良林绳缤
Owner SHANGHAI TENNECO EXHAUST SYST