Sand core exhaust method of complicated casting

A method of venting and sand core technology, which is applied in the direction of molds, cores, and mold components, can solve problems such as sand core venting difficulties, and achieve the effects of easy procurement, good venting effect, and smooth venting

Inactive Publication Date: 2011-07-06
FAW GROUP
View PDF5 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a method for exhausting sand cores of complex castings to solve the problem of difficult exhausting of sand cores of complex castings

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
  • Sand core exhaust method of complicated casting
  • Sand core exhaust method of complicated casting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] When molding and closing the box, the vent pipe is buried in the core head of the air channel sand core and the water channel sand core, so that the sand core can communicate with the outside atmosphere through the vent pipe; the material selection of the vent pipe: steel pipe is used as the vent pipe for cast iron castings; for Aluminum alloy castings, choose glass tubes as vent pipes.

[0011] Such as figure 1 As shown, the vent pipe 4 is buried in the core heads of the air channel sand core 5 and the water channel sand core 6 when molding and closing the case, so that the sand core can communicate with the outside atmosphere through the vent pipe. During pouring, the gas generated by the heating of the sand core is smoothly discharged out of the sand core through the vent pipe, thereby avoiding the gas entering the molten metal and causing the pores of the casting to be defective.

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

PropertyMeasurementUnit
softening pointaaaaaaaaaa
Login to view more

Abstract

The invention relates to a sand core exhaust method of a complicated casting, belonging to the casting field. A vent pipe is buried in the heads of an air flue sand core and a water flue sand core during modeling and mould assembling so that the sand cores can be communicated with the external atmosphere through the vent pipe; and the vent pipe as a cast iron casting is made of a steel pipe or as an aluminum alloy casting is made of a glass pipe. The exhaust problem of the sand cores wrapped by metal liquid can be solved by mounting the sand cores on the vent pipe for exhaust; and the invention has the advantages of simplicity and convenience for operation, good exhaust effect, great reduction for generation of air holes in the casting, reduction of casting reject ratio, low price and easiness for purchasing by using the steel pipe or the glass pipe as the vent pipe.

Description

technical field [0001] The invention belongs to the field of casting, in particular to a sand core exhaust method. Background technique [0002] With the rapid development of the automobile industry, more and more types of castings are used, especially the types and quantities of complex castings such as cylinder blocks and cylinder heads are increasing rapidly. Due to the complex sand core structure of complex castings such as cylinder blocks and cylinder heads, the sand core is covered by molten iron or aluminum with a large area, and the contact area between the sand core and the outside world is small or there is no communication, so that a large amount of gas generated by the sand core is heated only by The core head and sand mold cannot be completely discharged, and the gas that cannot be discharged enters the molten iron or aluminum water, which will form pore defects in the casting and cause the casting to be scrapped. Therefore, it is very important to successfully ...

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 Applications(China)
IPC IPC(8): B22C9/10
Inventor 孙光波吴景波
Owner FAW GROUP
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