{"id":29676,"date":"2026-05-18T10:58:09","date_gmt":"2026-05-18T02:58:09","guid":{"rendered":"https:\/\/www.liandafiltration.com\/?p=29676"},"modified":"2026-05-18T11:26:57","modified_gmt":"2026-05-18T03:26:57","slug":"porous-metal-disc-2","status":"publish","type":"post","link":"https:\/\/www.liandafiltration.com\/ar\/porous-metal-disc-2\/","title":{"rendered":"Porous metal disc"},"content":{"rendered":"
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Porous metal disc<\/a><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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A porous metal disc (often called a porous metal filter disc\/sintered filter) is a circular metal component with interconnected micropores inside. It is primarily used for precision filtration, gas-liquid distribution, catalysis, and heat dissipation<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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I. Main Materials\n<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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– Stainless steel (most commonly used): 304, 316L (acid and alkali resistant, high temperature resistant, general purpose)
– Special alloys: Hastelloy, Inconel, Monel (strong corrosion\/ultra-high temperature environments)
– Pure metals: Nickel, Titanium, Copper (corrosion resistant, electrical and thermal conductive)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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II. Two Main Types\n<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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1. Powder sintering type (precision porous)
<\/strong>– Process: High-temperature sintering of metal powder to form micron-sized interconnected pores (0.1\uff5e120\u03bcm)
– Features: Uniform pore size, stable air permeability, high strength, and regenerable by backwashing
– Temperature resistance: -20\u2103\uff5e600\u2103, pressure resistance up to 40MPa<\/p>

2. Mechanically punched type (macroscopic through hole)
<\/span><\/span><\/strong>– Process: Stamping\/laser drilling, regular hole shape (round, square, irregular)
– Hole diameter: 0.5mm to tens of mm
– Features: Extremely high strength, excellent ventilation and heat dissipation, highly decorative<\/p>



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III. Core Performance Advantages<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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– High temperature\/high pressure resistance: far surpasses plastic and fiber filter media
– Corrosion resistance: resistant to acids, alkalis, organic solvents, and high-temperature steam
– Washable and reusable: long lifespan, low cost
– Stable structure: no shedding, no particle migration
– Flexible customization: pore size, thickness, material, and shape can all be customized<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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IIII. Typical applications<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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The applications of porous metal discs (mostly sintered stainless steel filter discs) are very concentrated, primarily revolving around high temperature, high pressure, strong corrosion, and repeated cleaning conditions. Below are the most common and practical scenarios:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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1. Chemical and fluid filtration<\/strong>
– High-temperature oil, lubricating oil, and hydraulic oil filtration
– Acid and alkali solutions, organic solvents, and polymer melt filtration
– Catalyst particle recovery and slurry solid-liquid separation
Features: Temperature and pressure resistant, no slag shedding, steam-cleanable and regenerable.<\/p>

2. Gas Filtration and Distribution<\/strong><\/p>

– Oil and water removal from compressed air, sterile air filtration<\/p>

– Steam filtration, high-temperature flue gas dust removal<\/p>

– Uniform gas distribution in reactors, aeration discs, and distributors. This is the gas distribution disc at the bottom of many fermenters and fluidized beds.<\/p>

3. Food and Pharmaceutical Industries<\/strong><\/p>

– Precision filtration for beverages, juices, syrups, and edible oils<\/p>

– Sterilization-grade filtration for pharmaceutical solutions and water for injection<\/p>

– Air-permeable, flame-retardant, and explosion-proof components in pharmaceutical equipment
Requirements: Sanitary grade, heat-resistant sterilization, and no leaching.<\/p>

4. Vacuum and Pressure Equipment<\/strong><\/p>

– Vacuum suction cups, porous support plates for vacuum dryers<\/p>

– Damping, flow stabilization, and noise reduction for pressure sensors and flow meters<\/p>

– Flow limiting and noise reduction components for valves and instruments<\/p>

5. Environmental Protection and Water Treatment<\/strong><\/p>

– Deep wastewater filtration, support plates for MBR membrane modules<\/p>

– Ozone aeration, air distribution plates for flotation equipment<\/p>

– Sludge dewatering, solid-liquid separation filter plates<\/p>

6. Energy and Metallurgy<\/strong><\/p>

– Lithium-ion battery slurry filtration<\/p>

– Metal smelting melt filtration<\/p>

– Porous flow guides\/filters for fuel cells and hydrogen equipment<\/p>

7. Machinery and Flame Retardancy<\/strong><\/p>

– Flame arrester core components (prevents flame passage, allows gas flow)<\/p>

– Silencers, noise reduction mesh<\/p>

– Hydraulic systems, engine oil circuit filtration
Porous metal discs are generally used in applications requiring filtration, air distribution, flow splitting, or support, especially in harsh operating conditions (high temperature, high pressure, corrosion, and the need for cleaning).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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V. Filtration principle of porous metal discs:<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Utilizing the uniform, interconnected micropores within a metal, solid particles in a fluid are “blocked,” allowing the clean fluid to pass through.<\/p>

1. Basic Principle: Sieving + Deep Interception
Porous metal discs are typically made of sintered powder, with an internal network of dense, interconnected micropores.<\/p>

During filtration:<\/p>

1. Surface Sieving (Coarse Particles): Particles larger than the pore size are directly blocked on the disc’s surface and cannot pass through.<\/p>

2. Deep Interception (Fine Particles): Particles slightly smaller than the pore size, after entering the internal tortuous channels, are: – Collision<\/p>

– Adsorption<\/p>

– Getting stuck in narrow channels
Ultimately, they are also trapped inside the metal.<\/p>

3. Fluid Passage: Liquid or gas molecules are very small and can pass smoothly through the microporous network, flowing out from the other side.<\/p>

2. Why is it better than ordinary filters?<\/p>

– Ordinary filters: Only have a surface layer, easily clogged and broken.<\/p>

– Porous metal: The entire thickness is a filter layer, with high dirt holding capacity, high pressure resistance, and high temperature resistance.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

Porous metal disc A porous metal disc (often called a porous metal filter disc\/sintered filter) is a circular metal component with interconnected micropores inside. It is primarily used for precision filtration, gas-liquid distribution, catalysis, and heat dissipation I. Main Materials – Stainless steel (most commonly used): 304, 316L (acid and alkali resistant, high temperature resistant, […]<\/p>","protected":false},"author":1,"featured_media":26597,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[21,448],"tags":[],"table_tags":[],"class_list":["post-29676","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-pleat-mesh-filter"],"_links":{"self":[{"href":"https:\/\/www.liandafiltration.com\/ar\/wp-json\/wp\/v2\/posts\/29676","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.liandafiltration.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.liandafiltration.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.liandafiltration.com\/ar\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.liandafiltration.com\/ar\/wp-json\/wp\/v2\/comments?post=29676"}],"version-history":[{"count":4,"href":"https:\/\/www.liandafiltration.com\/ar\/wp-json\/wp\/v2\/posts\/29676\/revisions"}],"predecessor-version":[{"id":29681,"href":"https:\/\/www.liandafiltration.com\/ar\/wp-json\/wp\/v2\/posts\/29676\/revisions\/29681"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.liandafiltration.com\/ar\/wp-json\/wp\/v2\/media\/26597"}],"wp:attachment":[{"href":"https:\/\/www.liandafiltration.com\/ar\/wp-json\/wp\/v2\/media?parent=29676"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.liandafiltration.com\/ar\/wp-json\/wp\/v2\/categories?post=29676"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.liandafiltration.com\/ar\/wp-json\/wp\/v2\/tags?post=29676"},{"taxonomy":"table_tags","embeddable":true,"href":"https:\/\/www.liandafiltration.com\/ar\/wp-json\/wp\/v2\/table_tags?post=29676"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}