A resin-metal composite mirror grinding wheel based on sol-gel method and preparation method thereof

A sol-gel method, mirror grinding technology, applied in metal processing equipment, grinding/polishing equipment, grinding devices, etc. Uneven dispersion of powder molding, strong absorption capacity, and the effect of maintaining strength

Active Publication Date: 2020-06-12
温州宏量机械科技有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional grinding wheel production method is powder mixing → sieving → drying → pressing → sintering, which is prone to the problem of phase agglomeration. How to reduce the internal defects of abrasive grains and ensure the uniformity of the abrasive structure is an urgent and primary problem, because The uniformity of the internal structure directly affects the polishing performance
At the same time, traditional grinding tools have the problem of passivation after long-term use. Therefore, it is necessary to design a mirror grinding wheel with a self-sharpening function.
[0004] The invention patent with the publication number 106944939B discloses a self-sharpening ultra-hard micro-abrasive pellet with soluble resin material and its preparation method. The "soluble" resin material on the surface of the abrasive is dissolved by the grinding liquid to form pores between the binders. , to reduce the strength of the binder and its holding force on the surrounding abrasive particles, so as to achieve the purpose of automatic on-line controllable sharpening of the abrasive tool, but this method is easy to dissolve the resin inside the pill, causing swelling, resulting in a decrease in strength; The invention patent with publication number 104944956A discloses a method for preparing polycrystalline nano-diamond abrasive tools based on gel reaction. The method uses polyacrylonitrile for gelation, which has high hardness and is suitable for the grinding stage; the invention patent with publication number 108081159A Disclosed is a polyvinyl acetal resin mill with an organic gel forming method, which cannot be applied to water-based systems, and a single resin cannot be carbonized to form capillary pores

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 resin-metal composite mirror grinding wheel based on sol-gel method and preparation method thereof
  • A resin-metal composite mirror grinding wheel based on sol-gel method and preparation method thereof
  • A resin-metal composite mirror grinding wheel based on sol-gel method and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] In this example, a mirror grinding wheel with fine pores was prepared, and a silicon plane lens was mirror-ground on an end grinder.

[0039] Step 1: Prepare aluminum nitride powder with a water-resistant film on the surface

[0040] By weight, mix 100g of aluminum nitride powder with an average particle size of 1 micron and 1kg of absolute ethanol, stir evenly, and heat up to 40°C in a water bath to obtain an ethanol dispersion of aluminum nitride; at the same time, dilute 600g of absolute ethanol 80g tetraethyl orthosilicate (TEOS), and 100g ammonia water diluted with 600g absolute ethanol and 100g water were added dropwise to the aluminum nitride ethanol dispersion, and the dropping rate was controlled at 2 drops / second. After reacting in a water bath for 6 hours, stop the reaction, vacuum filter, wash the product 3 times with absolute ethanol, then dry the obtained product at room temperature for 12 hours, and then calcinate at 300°C for 2 hours After cooling, pass...

Embodiment 2

[0048] Polishing comparison test: using the traditional powder mixing-hot pressing method to prepare a mirror grinding wheel to grind the silicon flat lens, the surface morphology of the silicon flat lens obtained by grinding is as follows Figure 6 As shown, comparing the silicon plane lens surface topography and surface diagram of Example 1, the silicon plane lens surface obtained by polishing in Example 1 has even fine cuts, while the surface roughness of the silicon plane lens prepared by hot pressing method is It is 10.77nm, and the definition of mirror grinding is that the surface roughness after grinding is less than 10nm, so it is difficult to meet the requirements of mirror grinding. The uniform dispersion among materials of different densities is prone to agglomeration of powder particles when making fine-grained mirror grinding wheels.

[0049] At the same time, the durability comparison experiment of the gel grinding wheel and the hot-pressed grinding wheel was car...

Embodiment 3

[0051] The mirror grinding emery wheel that embodiment 1 obtains is carried out grinding process in the grinding fluid of different pH value (7,8,9,10,11,12,13), sodium carbonate is as acid pH regulator, other grinding parameters Consistent, observe the wear rate of the abrasive tool, such as Figure 8 shown. It can be seen from the figure that as the pH value increases, the wear rate of the grinding wheel also increases. Therefore, considering the life of the grinding wheel, it is necessary to adjust the pH value and sharpen the grinding wheel according to the passivation degree of the grinding wheel during use. At the same time, the wear of the grinding wheel is controlled. For the aluminum nitride of the water-resistant coating in the emery wheel that embodiment 1 obtains, when the material removal rate is higher, the pH value of the grinding fluid can be controlled below 9, slowing down the wear of the emery wheel, and when the material removal rate declines, the Add sodiu...

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
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
hardnessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a preparation method of a resin metal composite mirror grinding wheel based on a sol-gel method, and belongs to the field of precision machining, grinding and polishing. The preparation process comprises: adding water-soluble resin into polyvinyl alcohol glue to obtain mixed glue; then adding the mixed glue into the suspension prepared by dispersing and mixing the diamond micro powder, the waterproof aluminum nitride micro powder, the electrolytic copper powder, the filler and the additive to prepare slurry; and pouring the slurry into a grinding wheel die to prepare the grinding wheel, and shaping and finishing the grinding wheel. The mirror grinding wheel prepared from the polyvinyl alcohol and water-soluble resin mixed gel hydrosol gel has the characteristics ofuniform diamond distribution and through capillary micropores; soluble aluminum nitride with a water-resistant coating is added, and after the water-resistant coating of aluminum nitride particles onthe surface layer of the mirror grinding wheel is ground off, the aluminum nitride is hydrolyzed, the strength is reduced, and the surface layer has a self-sharpening effect; and the water-resistant coating of the aluminum nitride inside the mirror grinding wheel protects and ensures the stable internal strength of the mirror grinding wheel.

Description

technical field [0001] The invention belongs to the field of precision machining grinding and polishing, and relates to a resin-metal composite mirror grinding wheel based on a sol-gel method and a preparation method thereof. Background technique [0002] Mirror grinding refers to the workpiece after grinding, the surface roughness Ra is not more than 0.01μm, the light is like a mirror, and it can be clearly imaged, so it is called mirror grinding. Mirror grinding is mainly to remove the surface allowance of the workpiece by the micro blade of abrasive grains, and at the same time become blunt due to abrasive wear, and produce friction, extrusion, calendering and polishing on the surface of the workpiece. Therefore, to achieve mirror surface grinding generally, two measures are taken. One is to use a fine abrasive grinding wheel and use a rubber bonded elastic grinding wheel to squeeze and polish to achieve a mirror surface. This mirror surface grinding requires rough grindi...

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): B24D7/02B24D18/00B24D3/32B24D3/34
CPCB24D3/32B24D3/342B24D3/346B24D7/02B24D18/0009
Inventor 冯凯萍欧进乾周兆忠赵天晨许庆华
Owner 温州宏量机械科技有限公司
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