Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Precoated sand shell mold casting technology

A technology of shell casting and coated sand, which is used in manufacturing tools, casting molding equipment, casting molds, etc., can solve problems such as workers' health hazards, and achieve the effects of low thermal expansion rate, excellent heat resistance, and low gas generation.

Active Publication Date: 2019-08-27
ZHEJIANG OUSAI AUTO PART CASTING CO LTD
View PDF16 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still the following technical defects: the coated sand contains phenolic resin and urotropine, which are easily decomposed under high temperature to produce harmful gases such as ammonia, formaldehyde, carbon monoxide, etc., which are harmful to the health of workers and need to be improved

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
  • Precoated sand shell mold casting technology
  • Precoated sand shell mold casting technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] S1 shell making: configure the coated sand and make the metal template required by the corresponding casting, then use the sand shooting machine to cover the coated sand on the metal template, heat the metal template to 180°C, and the coated sand hardens to make the upper shell and Lower shell type, bonding the upper shell type and the lower shell type together to form a complete shell type;

[0048] S2 packing: Put the shell into the box, then fill the steel shot between the outside of the shell and the inner wall of the box and vibrate;

[0049] S3 Casting: Pour molten iron into the inner cavity of the shell mold, blow it to cool after pouring, and the casting is formed;

[0050] S4 Discharging: Pour out the castings, waste sand, and steel shots in the box together, separate the castings with a shakeout machine, clean and inspect the surface of the castings, and put them into storage after passing the test;

[0051] S5 Recycling: Magnetic separation to separate waste...

Embodiment 2

[0053] S1 shell making: configure the coated sand and make the metal template required by the corresponding casting, then use the sand shooting machine to cover the coated sand on the metal template, heat the metal template to 280°C, and the coated sand hardens to make the upper shell and Lower shell type, bonding the upper shell type and the lower shell type together to form a complete shell type;

[0054] S2 packing: Put the shell into the box, then fill the steel shot between the outside of the shell and the inner wall of the box and vibrate;

[0055] S3 Casting: Pour molten iron into the inner cavity of the shell mold, blow it to cool after pouring, and the casting is formed;

[0056] S4 Discharging: Pour out the castings, waste sand, and steel shots in the box together, separate the castings with a shakeout machine, clean and inspect the surface of the castings, and put them into storage after passing the test;

[0057] S5 Recycling: Magnetic separation to separate waste...

Embodiment 3

[0059] S1 shell making: configure the coated sand and make the metal template required by the corresponding casting, then use the sand shooting machine to cover the coated sand on the metal template, heat the metal template to 230°C, and the coated sand hardens to make the upper shell and Lower shell type, bonding the upper shell type and the lower shell type together to form a complete shell type;

[0060] S2 packing: Put the shell into the box, then fill the steel shot between the outside of the shell and the inner wall of the box and vibrate;

[0061] S3 Casting: Pour molten iron into the inner cavity of the shell mold, blow it to cool after pouring, and the casting is formed;

[0062] S4 Discharging: Pour out the castings, waste sand, and steel shots in the box together, separate the castings with a shakeout machine, clean and inspect the surface of the castings, and put them into storage after passing the test;

[0063]S5 Recycling: Magnetic separation to separate waste ...

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
Granularityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a precoated sand shell mold casting technology and relates to a casting technology. According to the technical scheme, the precoated sand shell mold casting technology is characterized by comprising the following steps that S1, shell manufacturing is conducted; S2, boxing is conducted, wherein a shell mold is put into a box body, then the part between the outer portion of the shell mold and the inner wall of the box body is filled with steel shots, and compaction is conducted; S3, casting is conducted, molten iron liquid is poured into an inner cavity of the shell mold,cooling is conducted after casting, and a casting is formed; S4, discharging is conducted, the casting, waste sand and the steel shots in the box body are poured out together, the casting is separated out, the surface of the casting is cleaned and checked, and the casting is warehoused after being qualified; and S5, recycling is conducted, wherein the waste sand and the steel shots are separated,and the recycled steel shots are repeatedly utilized. Precoated sand comprises the following components including, by weight, 100-110 parts of crude sand, 3-5 parts of heat-resisting phenolic resin,1.2-1.5 parts of a curing agent, 0.1-0.3 part of a lubricating agent and 0.03-0.06 part of a coupling agent. After the shell mold makes contact with the high-temperature molten iron liquid, the precoated sand is not likely to be decomposed to generate a large amount of gas, the gas generation amount is low, on one hand, adverse effects are not likely to be generated on the casting, and on the other hand, damage to fitness of workers is lowered.

Description

technical field [0001] The invention relates to a casting process, in particular to a film-coated sand shell mold casting process. Background technique [0002] Casting is a method in which liquid metal is poured into a casting cavity adapted to the shape of the part, and after it is cooled and solidified, the part or blank is obtained. Shell mold casting is a casting method, which uses thin shell molds to produce castings, which has the advantages of convenient production, high efficiency, less sand consumption, and high dimensional accuracy. The thin-shell mold is formed by covering the coated sand on the metal template heated to 180-280 ℃ and hardening. The coated sand refers to the molding sand whose surface is covered with a solid resin film before molding. The coated sand shell mold casting process is especially suitable for the gradual batch and mass production of various metals, and has been widely used in the casting of automobile parts in recent years. [0003] T...

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): B22C9/02B22C1/22
CPCB22C1/2253B22C9/02
Inventor 黄昌弟赵仕聪苏银进
Owner ZHEJIANG OUSAI AUTO PART CASTING CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com