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

Molding sand proportioning process used for producing large supercritical steel castings

A supercritical, steel casting technology, applied in the direction of casting molds, cores, manufacturing tools, etc., can solve the problems of operators' health hazards, unstable product quality, large thermal expansion coefficient, etc., and achieve high yield of sand molds and improved Casting process conditions, the effect of high hardening strength

Inactive Publication Date: 2015-06-03
CHANGZHOU XIAOGUO INFORMATION SERVICES
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are very few domestic manufacturers that research, develop and produce supercritical steel castings, and mainly produce water glass sand and furan resin sand. These two kinds of sand have poor yield and large thermal expansion coefficient, resulting in a high scrap rate. Moreover, it is not recyclable, has peculiar smell, and causes great environmental pollution, which is also very harmful to the health of operators.
Due to the relatively backward domestic casting technology, the quality of the produced products is unstable, resulting in high production costs and long construction periods

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
  • Molding sand proportioning process used for producing large supercritical steel castings
  • Molding sand proportioning process used for producing large supercritical steel castings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0006] A molding sand proportioning process for producing large supercritical steel castings:

[0007] 1) The back sand is made of alkaline phenolic resin sand, and the ratio by weight is alkaline phenolic resin: ratio of quartz sand = (1.5-2): 100, alkaline phenolic resin: curing agent = 100: (20-30), Quartz sand is 30 / 50 mesh or 40 / 70 mesh natural quartz sand, which contains SiO 2 ≥97% (weight). Preparation method of alkaline phenolic resin sand: put quartz sand and curing agent in the continuous resin sand mixer, add alkaline phenolic resin after mixing and grinding for 2 to 4 minutes, continue mixing and grinding for 1 to 2 minutes, unload the sand, and shape .

[0008] 2) The face sand is made of basic phenolic resin chrome ore, and the ratio by weight is basic phenolic resin: chrome ore = (1.5-2) ︰ 100, basic phenolic resin ︰ curing agent = 100 ︰ (15-25), Chromium ore is 40 / 70 mesh, which contains Cr 2 o 3 >44% (weight), refractoriness >1700°C. Alkaline phenolic re...

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
flame retardantaaaaaaaaaa
Login to View More

Abstract

The invention relates to a molding sand proportioning process used for producing large supercritical steel castings. The molding sand proportioning process is characterized in that alkaline phenolic resin sand is adopted as back sand; the weight ratio of alkaline phenolic resin to quartz sand is (1.5-2) to 100; the weight ratio of alkaline phenolic resin to a curing agent is 100 to (20-30); alkaline phenolic resin chromium ore is adopted as facing sand; the weight ratio of alkaline phenolic resin to chromium ore is (1.5-2) to 100; the weight ratio of alkaline phenolic resin to the curing agent is 100 to (15-25). The molding sand process which is high in proportioned mold strength and good in high-temperature deformability and collapsibility and is used for producing large supercritical steel castings is provided by the invention.

Description

technical field [0001] The invention relates to a molding sand proportioning process for producing large supercritical steel castings, and belongs to the technical field of casting technology. Background technique [0002] At present, there are very few domestic manufacturers that research, develop and produce supercritical steel castings, and mainly produce water glass sand and furan resin sand. These two kinds of sand have poor yield and large thermal expansion coefficient, resulting in a high scrap rate. Moreover, it is not recyclable, has peculiar smell, causes great environmental pollution, and also has great harm to the health of operators. Due to the relatively backward domestic casting technology, the quality of the products produced is unstable, resulting in high production costs and long construction periods. Contents of the invention [0003] The purpose of the present invention is to overcome the defects in the prior art, and provide a process for producing mo...

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): B22C1/00
CPCB22C1/00
Inventor 顾晓刚
Owner CHANGZHOU XIAOGUO INFORMATION SERVICES
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