Product performance
ZL-ZrO zirconia foam ceramic filter has the characteristics of high strength, good thermal stability, large surface area and high dimensional accuracy. Suitable for the production of various grades of steel casting, it can effectively filter out the macroscopic impurities in the metal liquid, but also make use of its huge surface The absorption of microscopic inclusions makes the metal liquid fill smoothly. Has the following significant advantages:
1, a wide range of applicable processes, can be used for sand, shell and precision casting ceramic type and other processes.
2, the maximum use temperature 1700℃, and can significantly simplify the traditional pouring system.
3, the special three-dimensional mesh structure has an excellent rectification effect on the metal turbulence, so that the casting organization is evenly distributed.
4, efficient filtration of small non-metallic impurities, improve the machining performance of parts
5. High comprehensive mechanical properties of castings, such as surface hardness, tensile strength, fatigue resistance and elongation.
Zirconia ceramic form filter
1.Product storage and transportation shall be earthquake-resistant and damp-proof.Take it lightly during loading and unloading to prevent mechanical damage.
2.Products shall be stored indoors according to different types and specifications, and the stacking site shall be flat and solid and moisture-proof.Other heavy objects shall not be stacked on the upper part of the products.
3.Wrap in cartons with cushion between each layer, see the packing list.
4.The product shelf life is three years.
Packaging and storage
Size&Notes
1.If the foam filter is not used with our standard core seat design or exceeds the filter capacity, the use temperature may cause its failure.
2.Try to avoid a direct metal fluid impact on the filter.When directly hitting the filter, the pouring height should not exceed 350mm.
3.Prevent and avoid extrusion and collision of products during handling and transportation.
4.The foam ceramic filter is made of stable chemical refractory and is usually non-toxic and harmless.Do not react with the metal liquid during pouring, and do not produce flue gas.There is also no harmful smoke during sand fall and sand regeneration.
1. Filter placement and core design: Cast steel foam ceramic filters are usually placed in the mold for use. The core seat is designed to make the front end of the filter as large as possible, but also to avoid filter breakage and liquid metal sideflow. Third, pay attention to the differences between the core seat of carbon steel and non-steel castings.
2. Pouring system design: In order to prevent the casting flow from being affected by the use of cast steel filters, the front area of the filter is at least 4-5 times the minimum section area in the pouring system. It is recommended to use an open injection system, and the cross-section ratio of each part is as follows:
Straight runner area : filter front area : cross runner area : inner runner area
1 : 4.5 : 1.1 : 1.2
The weight of molten metal filtered before the casting steel foam ceramic filter is blocked and the flow rate that can be achieved is determined by the type of alloy, the deoxidation method, the cleanliness of molten metal, the temperature of molten metal and the pouring process. To increase filtration capacity, multiple tablets can be used at once. At the same time, it should also meet the requirements of pouring flow.
The foam ceramic filter can be placed in various parts of the pouring system, and should be selected according to the characteristics of the parts and production conditions, as close as possible to the casting to achieve the best filtration effect. In practical applications, according to different castings and requirements, the following can be used How:
(1) Placed in the mold shell pouring cup: Reserve the filter table at the mold shell pouring cup, after the mold shell roasting, place the foam ceramic filter at the gate position, or bake and preheat the filter with the mold shell before pouring, which helps the metal liquid start to pass, and the use effect is better. In order to make the filter easy to place, it is necessary to design the filter base, that is, there is a 2 mm gap between the filter place and the outer edge of the filter in the shell, and the supporting surface should be left with a base greater than 5MM width.
(2) Put the foam ceramic filter in the special ceramic pouring cup, and connect the pouring cup to it during the shell making process On castings, the filter is placed in the pouring cup for pouring.
(3) Place the foam ceramic filter in the pouring system, make the pouring system shell with the filter in advance, and reserve an opening in the corresponding position on the shell to facilitate the filter to be placed in the installation seat. The shell making stage is placed in the seat and dissolved in water glass or silicon Glue sealing, curing and drying can be poured test.
Usage method&Setting position
