A kind of quick preparation method of vermicular graphite cast iron truck brake disc

A technology of vermicular graphite cast iron and brake discs, which is applied in the field of preparation of truck brake discs, can solve the problems of difficult grinding, low efficiency, easy entry of impurities, etc., and achieve good electromagnetic stirring effect, convenient replacement of steel types, and convenient starting operation Effect
CN111139397BActive Publication Date: 2021-06-01山东时风(集团)有限责任公司 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
山东时风(集团)有限责任公司
Publication Date
2021-06-01

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Abstract

The invention discloses a rapid preparation method for vermicular graphite cast iron truck brake discs. Lay a layer of ferrosilicon on the bottom to form a ferrosilicon layer, then add the rest of the pig iron to form a pig iron layer, raise the temperature, add electrolytic copper, ferromanganese, and ferrochrome before the added ferrosilicon and pig iron are completely melted; add low-frequency ferrosilicon to the medium-frequency induction furnace The solution in the induction furnace, the medium frequency induction furnace solution is vermigrated in the vermicular ladle; the vermicular agent is a mixture of rare earth silicon magnesium alloy, composite material with calcium element, cut aluminum wire, silicon barium powder and tin powder ;pouring. The invention has the characteristics of fast production speed of the brake disc, good quality of the brake disc and low cost.
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Description

technical field

[0001] The invention relates to a preparation method of truck brake discs, in particular to a rapid preparation method of vermicular graphite cast iron truck brake discs. Background technique

[0002] At present, the materials of truck brake discs produced at home and abroad mainly include ordinary gray cast iron and alloy gray castings. Gray cast iron has a certain hardness, but the physical and mechanical properties, mechanical strength, low temperature resistance and thermal fatigue resistance of gray cast iron brake discs are not satisfactory in the practical process of automobiles, and thermal cracks and rapid wear are prone to occur during use. phenomenon, resulting in certain security risks.

[0003] Graphite forms in cast iron are flake, worm and spherical. Vermicular graphite is an intermediate form of graphite between flake graphite and spherical graphite. When observed under an optical microscope, most of the short pieces of graphite are discont...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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