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Technology and Product Features


☆ Relying on the cutting-edge technical support and cooperation provided by the School of Materials Engineering and the Powder Metallurgy Research Institute of Central South University, Fidek's experienced technical team focuses on the research and development and production of powder metallurgy raw materials, which have been converted into nearly 20 types of mass-produced powder materials and all of them can be directly used for injection molding feeding;

★We have mastered different inspection methods and techniques for the precise content of metal elements;

★We have mastered the detection technology of carbon, nitrogen and oxygen content;

★We take the theory as a guide, combined with experimental data to accurately determine the chemical composition of each powder material and its optimal content, the pursuit of better physical and chemical properties, such:

• We have mastered the role of carbon in the material and its effect on sintering temperature, sintering density, sintering hardness and strength;

• We have mastered the role of chromium in the material and its effect on sintered density, hardness, permeability and corrosion resistance;

• We have mastered the role of nickel in the material and its effect on sintered density, sintered hardness, strength, magnetic permeability and corrosion resistance;

• We have mastered the role of molybdenum, niobium and vanadium in the material and their influence on sintered density, hardness, yield strength and elongation;

We have mastered the influence of Cr and Ni content on sintering density, magnetic permeability, pitting corrosion and material expansion coefficient in Cr-Ni austenitic stainless steel;

★Our self-patented deoxidizer formula and electromagnetic stirring device make oxides easier to replace, deoxidize more thoroughly, and the cleanliness of molten steel is higher (A, B, C, D, DS five categories of inclusions are extremely low). The oxygen content of our atomized powder is generally within 3800ppm, and the oxygen content of individual materials is as low as 2000ppm; the appearance of sintered products is brighter;

★We standardize and solidify the smelting process and operating procedures to ensure that the amount of oxidation loss of metal elements in the smelting process is stable in order to ensure the stability of the chemical composition, while we are good at regulating the effect of molten steel viscosity on the powder morphology. The powder under the Fidecker atomization system has no pungent odor and does not spray itself during feeding and injection molding;

★We have mastered the relationship between powder particle size and binder content, sintering density and sintering shrinkage, so our screening process adopts automatic feeding to be more conducive to the stability of particle size. At the same time, we can adjust the powder particle size distribution range to improve forming defects and sintering deformation;

★We are good at blending the chemical composition of the material or the particle size of the powder to improve the sintering yield and solve the secondary shrinkage of the size after heat treatment. These solutions have been applied to our commercial feedstocks;

★We will carry out feeding processing and injection molding and sintering on the powder materials of the finished products to verify the stability of the injection density, sintering density and sintering shrinkage rate, which not only controls the risk but also accumulates more test data to help us update the standard;

★The thermoplastic polymer we choose as the binder component has the following characteristics: similar melting point, good compatibility, high melt index, high strength and toughness, good oxidation resistance, different thermal cracking temperature.....

★We have developed binder systems in a variety of melt index ranges to improve filling and cracking defects in different products and structures. It was found that feedstocks with a melt index of more than 2000 (unit: g/10min) would have unstable injection weight and density during forming, and there were quality problems in catalytic degreasing and sintering;

★The overall scheme and implementation process of our feeding shrinkage coefficient evaluation are the concentrated reflection of the depth of core technologies such as product design, mold structure design and injection sintering process accumulated for more than 20 years. The shrinkage coefficient of our evaluation is almost close to the absolute value and has high matching with the comprehensive results of molds and processes of many users. On this basis, we have developed many feedings in different intervals;

★As far as possible, we share with users the control and improvement scheme of injection black pattern by mold structure, the treatment scheme of injection flow front and welding line, the solution of catalytic degreasing crack and uneven degreasing, and the solution of uneven sintering size and hardness;

★Our professional spirit and dedicated attitude will become one of your ideal partners. We will consistently provide high-quality products and considerate services, symbiosis with each other, and share the future......