Regarding fuel cell anode cathode, what materials have you used? Have you used metal porous material?
The sintered metal powder filter core filter plate is made of industrial metal powder (Titanium, stainless steel, Monnickel, Hastelloy). After cold isostatic pressing, the sintered metal porous filter element is made by high temperature and high vacuum sintering.
1: uniform and highly accurate porosity;
2: Stable shape, low filtration resistance and high permeability;
3: Good mechanical performance, impact resistance and alternating load;
4: High temperature resistance, use high temperature up to 900 ℃;
5: Stable air permeability and separation effect;
6: Good chemical stability, high temperature corrosion resistance
7: Mature production, seamless welding length up to 1500mm;
8: Easy regeneration, anti-cleaning, long service life.
1. Production process:
In most chemical processes, 316L stainless steel has good corrosion resistance, so we choose 316L powder as the material of porous metal filter elements. Firstly, all raw materials are monitored. When analyzing metal powders, in addition to their metallurgical composition, their particle size distribution and accumulation ratio are analyzed. After cold isostatic pressing, it is made through high temperature and high vacuum sintering. Before and after the sintering operation, it needs to be tested for carbon content. Each batch of products produced needs to be tested for bubble point, and the hardness of the medium has been determined. The diameter of the spherical particles also needs to be measured for their permeability, density and carbon content. Ensure that each product is of high quality.
2. Product specifications and filtration accuracy:
Commonly used outer diameter from Φ 20 ~ 100mm, length from 100 ~ 1500mm, greater than 1500mm can be welded, special specifications can be customized. The filtering precision is from 0.5um to 50um.
3. Filtration principle:
Since the sintered metal powder filter element is a metal porous element, it has numerous micropores inside, the pores are curved, criss-cross, and have uniform and highly accurate porosity. By pressurization, deep precision filtering can be achieved.
The surplus sintered metal powder filter element has corrosion resistance, high temperature resistance, high strength, easy to ensure filtration accuracy, easy regeneration and other excellent performance; because it is sintered by cold isostatic pressing and high temperature and high vacuum, surface particles are not easy to fall off; use temperature It can reach 900 ℃ and is suitable for the filtration of various corrosive media. It has excellent mechanical properties, can be cut, welded and other machining, and has high compressive strength. The filtration accuracy can be guaranteed. Even when working under high temperature and high pressure, the pore size will not be deformed, and the porosity can reach 35 to 45%. And the pore size distribution is uniform, the dirt holding capacity is large, it is easy to clean, the regeneration ability is strong, and the service life is long.
Sintering machine, generally has feeding system, batching room batching system, primary mixing, secondary mixing (also called granulation), sintering (including main pumping), ring cooling (or belt cooling), sieve 2113 points system (including bottom material) ), the systems are connected by belts, auxiliary equipment includes circulating water, waste heat utilization (including water softening equipment), gas preheating furnace, dust removal system 5261 (including fuel crushing system, batch dust removal system, head dust removal system, tail Dust removal system, screening dust removal system).
In addition to the above, there is a microwave 4102 online moisture detection and control system, which overcomes the limitation that the near infrared moisture meter can only measure surface water, completely penetrates the material on the belt, and performs online dynamic continuous measurement of the entire moisture of the sintered material. At present, many domestic metallurgical enterprises use MOSYE online moisture detector 1653 and solutions in the detection of the moisture content of the mixture in the sintering process, which effectively solves the problem of moisture detection and control of the sintered mixture and greatly improves the quality of the sinter .
The sintered metal powder filter element uses metal powder as the raw material, without the need to add a binder. After cold isostatic pressing, through 2113 high temperature vacuum sintering. By matching the metal powder particle size and process parameters, the pore size and distribution of the element can be adjusted. Utilize the characteristics of pore structure, material composition, compressive strength and other characteristics of different filter materials to develop filter products that are ultimately suitable for users.
The sintered metal powder filter element can achieve micron-level precision filtration, and can separate solid particles and impurities in liquid and gas. When the fluid passes through a certain precision filter element, the impurities are blocked on the surface of the filter element to form a filter cake, and the pure fluid flows out through the filter element 5261 To make the contaminated or impurity-containing fluid clean to the state required for normal production, so as to ensure that the downstream device obtains pure products or protects the normal operation of the equipment.
Unlike the non-metal sintered filter element, when the filter cake on the surface of the sintered metal powder filter reaches a certain thickness, due to its high-strength 4102 performance characteristics, the filter element can be backwashed or blown back by a certain reverse pressure Method to clean the filter element, so that the filter element can be used again.
If you want to know more about metal porous material, please feel free to discuss with us, thank you.