Production and application of vermicular graphite cast iron vermiculizer
A technology of vermicular graphite cast iron and vermicularizing agent is applied in the production and application field of vermicular graphite iron vermicularizing agent, which can solve the problems of low absorption rate of effective elements, and achieve the effects of cost reduction, product quality improvement and high absorption rate.
Inactive Publication Date: 2013-12-04
NANJING DAFENG ALLOY CO LTD
View PDF2 Cites 6 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The purpose of the present invention is to provide a new type of vermicular agent, which cooperates with the vermicular treatment device to solve the problem of low absorption rate of effective elements such as RE during the vermicular treatment by flushing into the bag, reduce the amount of RE, and realize accurate control of the vermicular reaction time , Stable improvement of product quality, reduction of production costs, full play and utilization of resources
Method used
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
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0028]In the above-mentioned vermicularization treatment method of vermicular graphite cast iron, the production method of magnesium ferrosilicon alloy containing Mg≤20% and Si≤70% without outer lining steel pipe and without RE composition is to adopt the one-step ferrosilicon alloy liquid smelted in submerged arc furnace. The method of producing magnesium ferrosilicon alloy liquid or electric furnace secondary remelting method to produce magnesium ferrosilicon alloy liquid without outer lining steel pipe of the above specifications, pouring magnesium ferrosilicon alloy liquid into four sides separated by cooling iron. In the model of the model, after the alloy liquid solidifies and cools, the required weight of the overall magnesium-iron-silicon alloy without the outer lining steel pipe is obtained; the upper cover plate of the alloy liquid is arranged above the model, which effectively restricts the casting of the magnesium-iron alloy liquid. The exposed area of the upper s...
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
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| melting point | aaaaa | aaaaa |
| melting point | aaaaa | aaaaa |
| melting point | aaaaa | aaaaa |
Login to View More
Abstract
The invention relates to a vermiculizing treatment method of a vermiculizer of vermicular graphite cast iron. The method is characterized by comprising the following steps of: placing the vermiculizer which contains 15-50% of RE and accounts for 15-40% of total weight of all alloys in the middle inside a square rectangular steel tube, and placing a molten iron treatment agent containing 12-16% of Mg, 54-65% of Si and less than 3% of Ca at both ends close to the square rectangular steel tube; at first, mechanically stirring and mixing powder molten iron treatment agent accounting for 50% of total weight of the molten iron treatment agent required in the square rectangular steel tube uniformly, and then, compacting by a press to obtain a whole, wherein parts at both ends are compacted RE-free molten iron treatment agent and the middle part is the vermiculizer; and placing the vermiculizer in a ladle with a reaction chamber to vermiculize. The vermiculizing treatment method solves the defects of conventional vermiculizing treatment, the reaction is extremely stable, no dust or magnesium light is generated, the absorption rate of effective elements is high, temperature reduction of molten iron is less, and the vermiculizing treatment cost is remarkably lowered.
Description
technical field [0001] The present invention relates to a production method of a vermicularizer and its application. Specifically, in a square steel pipe with two ends open, there is a molten iron treatment agent at the two ends of the opening, and a low-magnesium rare earth ferrosilicon integral creeping agent in the middle, which is built with the creeping treatment package. The creeping treatment method of the flushing-in-package method carried out in the creeping reaction chamber. Background technique [0002] The research and application of cast iron containing vermicular graphite as a formal engineering material began in my country and foreign countries at the same time, and its industrial application was earlier than that of foreign countries. The research, production and application of vermicular iron are at the international advanced level. Most factories use cupola smelting without pretreatment to produce vermicular iron parts. In order to ensure the vermiculariza...
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
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/10C22C37/04C21C1/10
Inventor 刘年路刘昌晨
Owner NANJING DAFENG ALLOY CO LTD