Slurry direct writing forming method of diamond tool

A diamond tool, direct writing molding technology, applied in the direction of manufacturing tools, metal processing equipment, abrasives, etc., can solve the problems of shape change, unfavorable product quality control, large dimensional shrinkage rate, etc., and achieve high consistency and controllable porosity. , good cooling effect

Active Publication Date: 2021-04-30
HUAQIAO UNIVERSITY
View PDF14 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the vitrified bond powder commonly used in the current slurry direct writing molding technology is based on SiO 2 As the main component, the size shrinkage rate after sintering is large (about 20%-30%), and the shape changes obviously, which is not conducive to the quality control of the final product

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
  • Slurry direct writing forming method of diamond tool
  • Slurry direct writing forming method of diamond tool
  • Slurry direct writing forming method of diamond tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Silicon powder, sodium oxide, aluminum oxide, potassium oxide and diboron trioxide are mixed for 4h at a speed of 600r / min with a mixer in parts by weight shown in Table 1 below, to obtain nano-ceramic powder;

[0035] Table 1

[0036]

[0037]

[0038] (2) Fully disperse xanthan gum in deionized water (using a stirrer to stir for 90min at a speed of 800r / min), to obtain a xanthan gum solution with a concentration of 3wt%;

[0039] (3) Mix the nano-ceramic powder prepared in step (1) with the xanthan gum solution obtained in step (2) to obtain a slurry, and the volume ratio of the mixed powder to the xanthan gum solution is 70%: 30% ;

[0040] (4) Add the slurry prepared in step (3) into the syringe of the slurry direct-writing molding equipment, and print it into the designed shape by layer-by-layer stacking to obtain the green body; the printing process parameters are: needle printing speed 4mm / min, the nozzle radius is 1.5mm, the shear rate is 10.6 / s, the...

Embodiment 2

[0045] (1) Silicon powder, sodium oxide, aluminum oxide, potassium oxide and diboron trioxide are mixed for 4h at a speed of 600r / min with a mixer in parts by weight shown in Table 3 below, to obtain nano-ceramic powder;

[0046] table 3

[0047] serial number Silica fume sodium oxide Aluminum oxide potassium oxide Diboron trioxide 1 70 5 12 3 10 2 67 5 12 3 10 3 64 5 12 3 10 4 61 5 12 3 10

[0048] Step (2) to step (5) is the same as embodiment 1, and the performance of the diamond tool that the nano-ceramic powder of different formulations in table 3 makes is as shown in table 4 below:

[0049] Table 4

[0050] Numbering Dimensional change rate (%) Bending strength (MPa) Compressive strength (MPa) 1 0.16 56.2 50.2 2 0.28 54.3 49.3 3 0.37 52.8 47.1 4 0.45 50.7 45.9

[0051] In conjunction with the data of Example 1, it is determined that the melting point of the nano-ce...

Embodiment 3

[0053] (1) The nano-ceramic powder, PMMA and W10 diamond microparticles determined in embodiment 2 are mixed with a mixer for 4h at a rotating speed of 600r / min in the ratio shown in Table 5 below, to obtain mixed powder;

[0054] table 5

[0055] serial number Nano ceramic powder (%) W10 Diamond (%) Porogen PMMA(%) 1 75 20 5 2 70 20 10 3 65 20 15 4 60 20 20

[0056] (2) Fully disperse xanthan gum in deionized water (using a stirrer to stir for 90min at a speed of 800r / min), to obtain a xanthan gum solution with a concentration of 3wt%;

[0057] (3) Mix the mixed powder prepared in step (1) with the xanthan gum solution obtained in step (2) to obtain a slurry, and the volume ratio of the mixed powder to the xanthan gum solution is 70%: 30%;

[0058] (4) Add the slurry prepared in step (3) into the syringe of the slurry direct-writing molding equipment, and print it into the designed shape by layer-by-layer stacking to obtain the...

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
melting pointaaaaaaaaaa
melting pointaaaaaaaaaa
melting pointaaaaaaaaaa
Login to view more

Abstract

The invention discloses a slurry direct writing forming method of a diamond tool, which comprises the following steps: (1) fully mixing nano ceramic powder, PMMA (polymethyl methacrylate) and diamond microparticles to obtain mixed powder; (2) fully dispersing xanthan gum in deionized water to obtain a xanthan gum solution; (3) uniformly mixing the mixed powder prepared in the step (1) with the xanthan gum solution obtained in the step (2) to obtain slurry; (4) adding the slurry prepared in the step (3) into a needle cylinder of slurry direct writing forming equipment, and printing into a designed shape in a layer-by-layer overlapping manner to obtain a green body; and (5) drying the green body prepared in the step (4) to constant weight, and then sintering to obtain the diamond tool. The diamond tool with a complex structure can be manufactured at a time through slurry direct writing forming, and the diamond tool has high consistency, proper mechanical property, controllable porosity and high shape precision.

Description

technical field [0001] The invention belongs to the technical field of abrasive tool materials, and in particular relates to a slurry direct writing forming method of a diamond tool. Background technique [0002] Diamond abrasive tools are a kind of superhard material abrasive tools. Diamond has extremely high hardness, strong grinding ability, and low abrasive wear. It is widely used in grinding tools such as grinding wheels, grinding discs, and dressing plates. In diamond grinding tools, the bond is another important component. Commonly used bonding agents are mainly divided into three categories: resin bonding agents, metal bonding agents and vitrified bonding agents. Among them, the vitrified bond is sintered by glass or ceramics to consolidate the diamond abrasive, and the vitrified bond and the diamond abrasive have better bonding strength under grinding conditions. Vitrified bonded diamond abrasive tools have more pores, which is conducive to cooling and chip remova...

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): C04B38/06C04B35/14C04B35/622B24D3/14B24D18/00B33Y70/10B33Y10/00
CPCC04B38/067C04B35/14C04B35/62204B24D3/14B24D18/009B33Y70/10B33Y10/00C04B2235/427C04B2235/3409C04B2235/3217C04B2235/3201
Inventor 陆静王艳辉黄景銮
Owner HUAQIAO UNIVERSITY
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