Manufacturing method of core filler for investment casting

A technology of sand core filler and production method, which is applied to casting molding equipment, molds, cores, etc., can solve problems such as high scrap rate, depression, and surface finish that cannot meet customer approval, and achieve the effect of easy sand cleaning

Inactive Publication Date: 2010-11-10
浙江红马铸造有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hole of the product made according to the conventional process is filled with molten steel, and the scrap rate is very high. Even if th

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0007] The manufacturing method of the sand core filler for investment casting of the present invention is to select ingredients according to the mass percentage ratio: chrome ore: foaming alkali=10:1, and stir the above ingredients fully and uniformly. The foaming alkali density is 1.35g / cm 3 .

[0008] The invention uses chromium ore in sand casting as a filler, and inserts the small holes, deep holes and narrow grooves of the sand core during the production process of the sand core to fill in the small holes, deep holes and narrow grooves where sand cannot be loaded. After the chrome ore filler is hardened in the hole or groove of the sand core, the strength and high temperature strength of the sand core exceed that of quartz sand and sagger sand. The surface of the small holes in the casting is not only smooth, but also easy to clean the sand during finishing, and the small holes are not deformed.

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
Densityaaaaaaaaaa
Login to view more

Abstract

The invention discloses a manufacturing method of core filler for investment casting, comprising the folloing steps: selecting chrome ore and sodium silicate as the ingredient at the ratio of 10:1, and fully stirring the ingredient. Because the invention adopts the technical scheme, after the chrome ore filler is hardened in the hole or groove of the core, the strength and the high-temperature strength of the core exceed those of the quartz sand and sagger sand. The surfaces of the ostiole, longhole and narrow groove are gloss and easy to remove the sand during finishing, and the ostiole has small possibility of deforming.

Description

technical field [0001] The invention relates to a method for making sand core filler for investment casting. Background technique [0002] At present, in most precision casting industries, it is necessary to make ceramic cores to complete the production of small holes, deep holes, and narrow grooves in castings, especially when the holes and grooves on thick-walled castings require high dimensional accuracy. Shaping becomes an issue that must be taken seriously. The hole of the product made according to the conventional process is filled with molten steel, and the scrap rate is very high. Even if the product can be formed, the surface finish inside the hole cannot meet the customer's approval, and the middle part of the hole is sunken. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for making sand core fillers for investment casting, so that the surfaces of small holes, deep holes and narrow grooves in...

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
IPC IPC(8): B22C1/00
Inventor 李根
Owner 浙江红马铸造有限公司
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