Supercharge Your Innovation With Domain-Expert AI Agents!

Precoated sand multi-stack casting process

A casting process, a technology of coated sand, which is used in the manufacture of spare parts in the automobile and machinery industries, and the multi-layered casting process of coated sand. Heavy labor and other problems, to achieve the effect of improving production efficiency, reducing labor, and saving labor costs

Inactive Publication Date: 2010-11-10
NINGBO CITY NODULAR CAST IRON
View PDF0 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] That is to say, the existing coated sand casting process needs to make two sets of molds and two molding processes for one casting, and the manual and mechanical labor is heavy.
Due to the limitation of the artificial or mechanical working surface and the cooling time of the high-temperature liquid material flow path, only a single-layer type can be made, and the single-layer area cannot be expanded too much.
This restricts the number of castings casted at one time. Generally, only 4-10 small castings can be made in one pouring of a type of box.

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 multi-stack casting process
  • Precoated sand multi-stack casting process
  • Precoated sand multi-stack casting process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The multi-stack casting process of coated sand in this embodiment includes the following steps in turn:

[0023] a: Make the coated sand shell type unit according to the casting drawing. The middle part of the shell-type unit is provided with a sprue vertically penetrating through the coated sand shell-type unit; the casting cavity is distributed around the sprue and communicated with it through the runner. The surroundings of the sprue on the upper surface of the shell-type unit and the sprue on the lower surface can be respectively provided with grooves or bosses whose sizes are engaged with each other, so that the shell-type units are tightly connected when stacked to prevent the high-temperature liquid material from penetrating. leak. The shell-type unit is formed by clamping an upper mold and a lower mold, and the sand mold wall is thickened at the hot spot. The bottom of the shell-type unit is provided with a liquid storage tank which communicates with the casti...

Embodiment 2

[0032] The multi-stack casting process of coated sand in this embodiment includes the following steps in turn:

[0033]a: Make the coated sand shell type unit according to the casting drawing. The middle part of the shell-type unit is provided with a sprue vertically penetrating through the coated sand shell-type unit; the casting cavity is distributed around the sprue and communicated with it through the runner. The shell-type unit is formed by clamping an upper mold and a lower mold, and the sand mold wall is thickened at the hot spot. The bottom of the shell-type unit is provided with a liquid storage tank which communicates with the casting cavity of the lower shell-type unit, and is used for feeding the high-temperature liquid material during cooling.

[0034] b: Six sets of shell-type units are stacked vertically to form a building, and a total of three shell-type units are placed on the iron base. The sprues of each shell-type unit in the same building are vertically ...

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 relates to a technical field of a casting process, in particular to a precoated sand multi-stack casting process comprising the following steps of: after making precoated sand shell-shaped units according to a casting drawing, vertically stacking at least two shell-shaped units on an iron bottom board, covering an iron cover board and then tightly clamping by using a connecting element; then pouring high-temperature liquid materials from a pouring cup of the iron cover board to fill a casting cavity, a horizontal casting gate and a straight casting gate under the action of gravity; and solidifying and cooling the high-temperature liquid materials to obtain a casting. Under the condition of ensuring the quality of the casting, the invention greatly improves the production efficiency of the casting process and reduces production cost.

Description

technical field [0001] The invention relates to the technical field of casting technology, in particular to a multi-layer casting process of coated sand, which is especially suitable for the manufacture of spare parts in the automobile and machinery industries with complex structures and surface casting shapes, which require clean, smooth, and high precision. Background technique [0002] Coated sand casting process, also known as "shell casting process" or "heat hardening process". Its characteristics are: firstly, coated sand is used as the material, and the shell mold is manufactured by using a metal hot core box mold; the cavity inside the shell mold has the same shape as the casting, and the size of the casting is designed according to the shrinkage ratio of the material to scale the size allowance; Then inject high-temperature liquid materials such as molten iron into the cavity, cool and solidify to obtain castings. [0003] In the prior art, the adhesive film on the...

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): B22C9/20
Inventor 孙盛陈伟达
Owner NINGBO CITY NODULAR CAST IRON
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com