Press-fit cover plate in air filter
An air filter and cover plate technology, which is applied in the direction of dispersed particle filtration, chemical instruments and methods, and dispersed particle separation, can solve the problems of inconvenient installation and fixation, low molding efficiency, poor stability, etc., and achieve high molding efficiency High, easy to install and fix, good stability
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[0017] Referring to the accompanying drawings, a press-fit cover plate in an air filter includes a press-formed disc-shaped plate body 1, and the outer edge of the disc-shaped plate body 1 is provided with an outer flange 2 that is turned downwards and inwards , the disc-shaped plate body inside the outer flange 2 is provided with two downward protruding annular bosses 3, 4, the transition surface 5 between the annular bosses 3, 4 is a slope, and connecting ribs are provided between the slopes 6. The lower end surfaces of the annular bosses 3 and 4 are arc-shaped surfaces respectively; the middle part of the disc-shaped plate body 1 is sunken inward.
[0018] 2. The disc-shaped plate body is stamped from the following steel materials:
[0019] a. The step of pouring the steel material blank The weight percentage of the basic chemical composition of the steel material blank is: C 0.85 ~ 1.15%, Si 0.8 ~ 1.5%, Mn 0.5 ~ 1.2%, Cr 4.5 ~ 5.5%, Mo 1.8 ~ 2.5%, Ni: 0.4-1.1%, Ti: 0.05-0...
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