NINGXIN has a unique inside quality control flow that give it a distinct  advantage over other foundry filter suppliers, which enabling us to  deliver the highest available quality of foundry molten metal filters.  Founded by a renowned leader in molten metal filtration industry and  with a team of experts in the field, NINGXIN provides extensive and  unmatched filters design and application information for its customers,  generating huge casting industry filtration cases and data. 

To  ensure the consistant filter quality, NINGXIN employs the best  technology available today. The company focuses on quality and quality  control from beginning to end. The result is unsurpassed quality, and it  starts with experience and Quality Control. We have made simulated  pouring testing and analyzed over 190,000 samples out of produced  various types of filters. Rich experience and strict quality control  standards enable us to achieve the filters quality which is the hallmark  of the company.

Inspection equipments for ceramic foam filters

• 2 x Medium frequency electric furnace 200 kg: mainly used for melting high temperature metal solution, and conducting extreme high temperature solution impact test on the filters
• 2 x Ceramic bending test machines: detecting the room temperature compressive strength of the filters
• 3 x Muffle furnaces: detecting thermal shock resistance of the filters
• Digital viscometer, slurry hydrometer: testing the feeding and stirring process during the production process
• Glassware for balance and chemical experiments: used to check the filter mass, bulk density, and drainage method to verify the porosity

Experimental development equipment

• Electron microscopy: check the uniformity of the distribution of the filter surface components.
• High-temperature load detector, etc.: used for inspection of data such as deformation and expansion at high temperature of the filter.
• High-temperature spectrometer, fluorescent X-ray: Check the composition of the filter.
• Digital Viscometer, Slurry Hydrometer: Tests the development of slurry and mixing process.
• Bench Drying Box: Simulate the working principle of the drying workshop to dry the experimental product.
• R&D production line: a production line dedicated to the development of new foundry filter products.
• Small shuttle kiln: used to develop product sintering.