A ductile iron casting process

A casting process and ductile iron technology, applied in the field of ductile iron casting process, can solve the problems of polluted operating environment, low absorption rate of nodularizing agent, large amount of nodularizing agent used, etc. and smoke removal effect

Active Publication Date: 2016-01-20
WUJIANG HYDRAULIC COMPONENTS FOUNDRY
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing ductile iron casting process has a low absorption rate of the nodulizer due to unstable nodularization reaction, and the molten iron splashes out the nodulizer, resulting in a large amount of nodulizer usage, and at the same time, the operating environment is polluted by flashes and dense smoke during nodularization

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A ductile iron casting process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] In order to enable those skilled in the art to better understand the solution of the present invention, and to make the above-mentioned purpose, features and advantages of the present invention more obvious and comprehensible, the present invention will be further described in detail below in conjunction with examples.

[0035] The ductile iron that model is QT500-7 is manufactured by this process now, and this manufacturing process comprises the following steps:

[0036] (1) Spheroidization package preparation:

[0037] a. If figure 1 As shown, the spheroidizing bag includes a spheroidizing bag body 2 for placing molten iron, and a bag cover 4 arranged above the bag body 2. The bag cover 4 is provided with a groove cavity 6, and one end of the bag body 2 bottom is provided with a In the pit 8 of the spheroidization reaction, the other end of the cover 4 located at the pit 8 is provided with a casting liquid inlet 10, which is respectively connected with the cavity mo...

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

No PUM Login to view more

Abstract

The invention provides a nodular iron casting process, which includes the following steps: (1) Nodularizing package preparation: the nodularizing package includes a package body and a package cover, first sprinkle nodulizers into the pits in the package body, inoculate (2) Melting and pouring: the production of pouring liquid, the percentage content of the chemical composition of the raw materials is as follows: C: 4.2~4.6%; Si: 0.95~1.15 %; Mn: 0.12~0.18%; P: 0.034%; S: 0.024%; the rest is Fe; the above raw materials are heated to the melting temperature in the electric furnace to fully melt the alloy to form molten iron; pour the molten iron into the ladle cover In the cavity of the slot mold, the molten iron is continuously poured into the spheroidizing bag at the other end of the pit from the inlet of the casting liquid, and the molten iron is spheroidized and inoculated in the spheroidizing bag to form a pouring liquid; the cavity is poured with the pouring liquid , to form a casting after solidification. Through the casting process of the invention, the absorption rate of the nodulizer can be improved, the usage amount of the nodulizer can be reduced, the casting cost can be reduced, and the environment can be improved.

Description

technical field [0001] The invention relates to a casting process, in particular to a ductile iron casting process, which belongs to the technical field of casting. Background technique [0002] Ductile iron is one of the most widely used cast iron materials at present. It has the characteristics of high strength, high elongation, strong fatigue resistance and excellent wear resistance. Shipbuilding, metallurgy, chemical industry and other departments. The existing ductile iron casting process has a low absorption rate of the nodulizer due to unstable nodularization reaction, and the molten iron splashes out the nodulizer, resulting in a large amount of nodulizer usage, and at the same time, the operating environment is polluted by flashes and dense smoke during nodularization . Contents of the invention [0003] In order to solve the deficiencies in the background technology, the purpose of the present invention is to overcome the defects of the background technology, p...

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
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C22C37/04C22C33/08C22C37/10B22D1/00
Inventor 浦傲天
Owner WUJIANG HYDRAULIC COMPONENTS FOUNDRY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap