A kind of intelligent preparation method of compacted graphite cast iron brake drum

A technology of intelligent preparation and vermicular graphite cast iron, which is applied in casting molding equipment, casting molds, casting mold components, etc., can solve the problems of large brake drum volume, easy entry of impurities, low efficiency, etc., and achieves good electromagnetic stirring effect. The effect of convenient starting operation and convenient replacement of steel grades
CN111139396BActive 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 an intelligent preparation method of vermicular graphite cast iron brake drum, which includes: adding part of pig iron, scrap steel and returned materials to a low-frequency induction furnace to melt, controlling the amount of carburant added; laying a layer on the bottom of the medium-frequency induction furnace Ferrosilicon forms a ferrosilicon layer, and then adds part of pig iron to form a pig iron layer. When the temperature rises, before the added ferrosilicon and pig iron are completely melted, add a part of electrolytic copper and ferromanganese; The center of the top is poured into the low-frequency induction furnace solution; the medium-frequency induction furnace solution is vermigrated in the vermicular ladle; pouring. The invention has the characteristics of fast production speed of the brake drum, good quality of the brake drum and low cost.
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Description

technical field

[0001] The invention relates to the field of brake drums, in particular to a method for manufacturing a brake drum. Background technique

[0002] The brake drum is the main braking element in the axle braking system. When the car is braking, the braking force is generated by the friction between the brake pads and the inner wall of the brake drum. The friction between the inner wall of the brake drum and the brake pads produces the braking effect. During the friction process, heat will be generated. During the friction process and after the friction is stopped, different parts of the brake drum will also alternate between cold and heat. The moving drum has good wear resistance, thermal conductivity and thermal fatigue resistance.

[0003] According to statistics, at present, brake drum cracking accounts for more than 80% of the failure cases, and the cracking is mainly caused by thermal fatigue cracks. Existing brake drums are generally made of gray cast i...

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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