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

A kind of cold box ceramsite sand and preparation method thereof

A technology of ceramsite sand and cold box, which is applied in the direction of cores, manufacturing tools, casting molding equipment, etc., can solve the problems of large thermal expansion, large angle coefficient, poor fluidity, etc., to maintain roundness and fluidity, Effects of improving fire resistance and cladding properties

Active Publication Date: 2020-11-03
北京仁创砂业铸造材料有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, with the rapid development of the foundry industry, people have higher and higher requirements for casting materials, and some shortcomings of traditional cold box sand casting sand have become more and more prominent
Quartz silica sand has the disadvantages of low refractoriness, large thermal expansion, large angle coefficient, and poor fluidity, causing defects such as sand sticking, veining, deformation, and cracking in castings
Non-quartz sand (magnesia, olivine sand, chromite sand, zircon sand) has high comprehensive performance, but resources are scarce and expensive
At the same time, because it is broken by machinery in the production process, a large angle coefficient will consume a large amount of binder
Although artificial pearl sand is superior in performance, due to environmental protection issues, it still has difficulties in obtaining raw materials, complicated preparation process, high energy consumption, high production cost, and iron substances contained in pearl sand are easy to react with castings, etc. question

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
  • A kind of cold box ceramsite sand and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A cold box ceramsite sand, comprising the following raw materials in parts by weight: ceramsite sand 80kg, ferric oxide 5kg, zeolite powder 0.1kg, organic resin 1kg;

[0035] The organic resin is composed of the following raw materials: 50g of phenolic resin and 40g of polyisocyanate.

[0036] The preparation method of described cold box ceramsite sand, comprises the following steps:

[0037] (1) prepare ceramsite sand;

[0038] (2) Pulverize ceramsite sand, ferroferric oxide, zeolite powder and organic resin respectively, then mix and stir evenly, add in the cold box; feed triethylamine gas into the cold box to obtain the cold box Box of ceramsite sand.

Embodiment 2

[0040] A cold box ceramsite sand, comprising the following raw materials in parts by weight: ceramsite sand 90kg, ferric oxide 7kg, zeolite powder 0.8kg, organic resin 2kg;

[0041] The organic resin is composed of the following raw materials: 50g of phenolic resin and 40g of polyisocyanate.

[0042] The preparation method of described cold box ceramsite sand, comprises the following steps:

[0043] (1) Prepare ceramsite sand; crush clay, slate, shale or coal gangue; add the crushed raw materials into a granulator for granulation, and add aluminum powder to the granulator after the granulation is completed , mix and stir evenly to obtain a spherical semi-finished product coated with aluminum powder, and sinter the spherical semi-finished product coated with aluminum powder to obtain the ceramsite sand.

[0044] (2) Pulverize ceramsite sand, ferroferric oxide, zeolite powder and organic resin respectively, then mix and stir evenly, add in the cold box; feed triethylamine gas i...

Embodiment 3

[0046] A cold box ceramsite sand, comprising the following raw materials in parts by weight: ceramsite sand 100kg, ferric oxide 8kg, zeolite powder 1kg, organic resin 2kg;

[0047] The organic resin is composed of the following raw materials: 55g of phenolic resin and 50g of polyisocyanate.

[0048]The preparation method of described cold box ceramsite sand, comprises the following steps:

[0049] (1) Prepare ceramsite sand; crush clay, slate, shale or coal gangue into particles with a fineness of 500 mesh; add the raw materials obtained through crushing into a granulator for granulation, and after the granulation is completed, send to the granulator Add aluminum powder with a fineness of 600 mesh into the granulator, mix and stir evenly to obtain a spherical semi-finished product coated with aluminum powder, and sinter the spherical semi-finished product coated with aluminum powder at a temperature of 1000°C for 25 minutes to obtain the described Ceramsite sand.

[0050] (2...

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
densityaaaaaaaaaa
coefficient of linear thermal expansionaaaaaaaaaa
Login to View More

Abstract

The invention discloses cold core box ceramsite sand and a preparation method of the cold core bo ceramsite sand. The cold core box ceramsite sand is prepared from ceramsite sand, ferroferric oxide, zeolite powder and organic resin. The organic resin is prepared from phenolic resin and polyisocyanate. The cold core box ceramsite sand has the beneficial effects that the cold core box ceramsite sandis prepared from the ceramsite sand, the surface of the ceramsite sand is wrapped by a layer of aluminum powder in the preparation process, an aluminum oxide film will be generated on the surface ofthe ceramsite sand after the wrapping aluminum powder is sintered, and the film not only keeps the roundness and fluidity of the ceramsite sand, but also improves the fire resistance of the ceramsite.When the cold core box ceramsite sand is prepared, the film further can reduce the roughness of the surface of the ceramsite sand, therefore, the resin wrapping performance is improved, and the binding bridge strength is increased. The cold core box ceramsite sand has the low thermal expansion property, the quite high fire resistance degree and excellent resistance to metal penetration and sand adhesion, and a produced casting is smooth, free of sand adhesion defect and good in size precision.

Description

technical field [0001] The invention relates to the technical field of casting materials, in particular to a cold box ceramsite sand and a preparation method thereof. Background technique [0002] Cold box sand is a material used to make cores in foundry production. It has good fluidity and filling properties and a wide range of applications. Cold box sand is usually composed of refractory materials and binders, and the refractory materials at this stage are mainly quartz sand, non-quartz sand, artificial sand, etc. Among them, quartz sand is mainly silica sand; non-quartz sand is divided into magnesia, olivine sand, chromite sand, zircon sand, etc.; artificial sand is mainly pearl sand. [0003] However, with the rapid development of the foundry industry, people have higher and higher requirements for casting materials, and some shortcomings of traditional cold box sand casting sand have become more and more prominent. Quartz silica sand has the disadvantages of low refra...

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 Patents(China)
IPC IPC(8): B22C1/02B22C1/22
CPCB22C1/02B22C1/2233
Inventor 尹海军冯俊龙李卓情包羽冲秦申二
Owner 北京仁创砂业铸造材料有限公司
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