Mixture, riser bush made of same and preparation method of riser bush

A raw material and mixing technology, which is applied in the field of preparation of riser sleeves and riser sleeves, can solve problems affecting the internal quality of castings, achieve long burning time, improve strength, and ensure product quality.

Inactive Publication Date: 2016-12-07
PANZHIHUA UNIV
View PDF6 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some people have found that the actual effective feeding molten steel of common sand mold risers accounts for a very small proportion of the total riser volume, about 6-14%. Therefore, larger risers are often used to meet the feeding of castings. Even so, the riser The liquid metal in the mouth itself solidifies quickly, and sometimes it cannot be fed in time to affect the internal quality of the casting

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
  • Mixture, riser bush made of same and preparation method of riser bush
  • Mixture, riser bush made of same and preparation method of riser bush

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Raw material of following amount by weight percentage: hollow microsphere 35%, aluminum powder 19%, ferric oxide 8%, graphite 8%, tailings slag 20%, potassium chlorate 4%, potassium nitrate 3%, cryolite 3%, 12% water glass and 16% water by weight of the above-mentioned components are evenly mixed to obtain a mixed ingredient, and the mixed ingredient is pressed and molded and then dried to obtain a riser sleeve with heat-retaining function.

[0027] The compressive strength of the riser cover that makes is 1.02kg / cm 2 , the ignition time is 35.6s, and the duration of the secondary exothermic reaction is 14.6s. The product results show that the prepared riser sleeve can play a good role in feeding.

Embodiment 2

[0029] The raw material of the following amount by weight percentage: hollow microsphere 26%, aluminum powder 21%, ferric oxide 10%, graphite 9%, tailings slag 24%, potassium chlorate 4%, potassium nitrate 3%, cryolite 3%, 14% water and 14% water glass by weight of the above-mentioned components are evenly mixed to obtain a mixed ingredient, and the mixed ingredient is pressed and molded and then dried to obtain a riser sleeve with a function of heating and heat preservation.

[0030] The compressive strength of the riser cover that makes is 1.16kg / cm 2 , the ignition time is 38.4s, and the duration of the secondary exothermic reaction is 15.7s. The product results show that the prepared riser sleeve can play a better feeding effect.

Embodiment 3

[0032] The raw material of the following amount by weight percentage: hollow microsphere 21%, aluminum powder 23%, ferric oxide 12%, graphite 9%, tailings slag 26%, potassium chlorate 3%, potassium nitrate 2%, cryolite 4%, 14% water glass and 18% water by weight of the above-mentioned components are evenly mixed to obtain a mixed ingredient, and the mixed ingredient is pressed and molded and then dried to obtain a riser sleeve with heat-retaining function.

[0033] The compressive strength of the riser cover that makes is 1.32kg / cm2 , the ignition time is 30.6s, and the duration of the secondary exothermic reaction is 16.2s. The product results show that the prepared riser sleeve can play a better feeding effect.

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 the technical field of auxiliary materials of casting, in particular to a mixture, a riser bush made of the same and a preparation method of the riser bush. The riser bush is prepared through mixing, compression molding and drying and with the following raw materials including, by weight percentage, 19% to 23% of aluminum powder, 8% to 12% of ferric oxide, 8% to 10% of graphite, 17% to 35% of cenospheres, 2% to 4% of cryolite, 20% to 28% of tail slag, 2% to 4% of potassium chlorate, 2% to 3% of potassium nitrate, and binders of the required amount and water of the required amount, wherein the aluminum powder and the ferric oxide serve as the auxiliary exothermic materials, the cenospheres serve as the thermal insulation materials, the cryolite serves as the fluxing agent, the tail slag serves as the aggregate, and potassium chlorate and potassium nitrate serve as the oxidizing agents. Because the riser bush obtained with the formula is low in ignition temperature, ideal in ignition time and long in burning time, and provides sufficient heat, the riser bush is long in begin time of solidification, and has the good feeding effect, and the product quality of steel castings is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of casting auxiliary materials, and in particular relates to a low-cost mixed material with the function of heating and heat preservation in the casting of steel castings, a riser sleeve made from the mixture and a method for preparing the riser sleeve. Background technique [0002] The riser is a supplementary part added to the top or side of the casting to avoid defects in the casting. The cavity of the riser is a cavity for storing liquid metal. When the casting is formed, the metal is supplied to prevent shrinkage, shrinkage, and exhaust. and the role of slag collection. Riser sleeves with different functions have different shapes, sizes and opening positions. The traditional riser feeding technology for steel castings uses ordinary sand risers, which are directly formed by molds. Due to the lack of insulation materials, the risers dissipate a lot of heat from the inside to the outside during the feedin...

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): B22C9/08B22C1/00B22C1/02B22C1/18
CPCB22C9/088B22C1/00B22C1/02B22C1/188
Inventor 王能为李友崔旭梅李仁富
Owner PANZHIHUA UNIV
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