They are widely applied in the production of medium and large gray iron, ductile
They are widely applied in the production of medium and large gray iron, ductile iron and steel castings for wind power, machine tools, valve bodies, heavy machinery and other fields.
Product Description
(1)Introduction to Silicon Carbide Cold Iron Products:
Silicon carbide chill feature excellent thermal conductivity properties, which can effectively shorten the solidification time of castings and their hot spot areas, alter the solidification sequence of castings, reduce the risk of shrinkage cavities and porosity at the hot spots, significantly improve the matrix structure and graphite morphology of castings, and enhance the structural compactness and mechanical properties of castings. They are widely applied in the production of medium and large gray iron, ductile iron and steel castings for wind power, machine tools, valve bodies, heavy machinery and other fields.
(2)Key technical indicators:
Product model | SiC % | density g/cm3 | thermal conductivity W/mk,1000℃ | coefficient of thermal expansion x10-6/℃ | Heat resistance temperature ℃ | Mohs hardness | Room temperature compressive strength MPa |
DYL-SiC80 | 80-85% | 2.3-2.5 | 35-50 | 4.5-6.0 | ≥1450 | 8.0-8.5 | ≥60 |
DYL-SiC90 | 88-92% | 2.5-2.7 | 50-70 | 3.5-5.0 | ≥1550 | 9.0-9.5 | ≥100 |
Note: The dimensions of chills can be customized according to customer requirements.
(3)Physical Properties and Advantages:
●Silicon carbide chill boast high refractoriness, dense surface and high surface flatness, which can significantly reduce the risks of sand adherence, fusion bonding at the chill contact areas of castings.
●Silicon carbide chill exhibit excellent physicochemical properties at high temperatures, which can effectively inhibit the risk of carburization.
●With superior thermal conductivity, silicon carbide chill can effectively suppress the risks of shrinkage cavities and porosity in the thick and heavy sections of castings, improve the compactness of castings.
●Silicon carbide chill can significantly improve the graphite morphology and matrix structure at the key parts of castings, and prevent the formation of abnormal graphite.
●Silicon carbide chill can make the type A graphite at the hot spot areas of gray iron become finer and curved, and make the graphite nodules at the hot spot areas of ductile iron increase in quantity, reduce in size, and become more spherical and uniformly distributed.
●Silicon carbide chill exhibit excellent wear resistance and reusability; the reuse times of DYL-SiC90 can reach more than 20 times.
(4)Notes:
●Prevent collision and impact during use to avoid damage and cracking of chills.
●Conduct inspection on surface quality, dimensional accuracy, chipping and cracking in accordance with the inspection standards before reuse; repair or scrap the chills that fail to meet the standards.
●After use, clean the slag on the surface thoroughly with a high-pressure air gun and a brush; do not use hard tools to clean the chill surface to prevent surface damage and cracking.
●After maintenance, place the chills in a fixed position with standardized labeling (specifications, reuse times), and store them in a dry and well-ventilated place to prevent surface corrosion and moisture absorption.
They are widely applied in the production of medium and large gray iron, ductile
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