Injection molding formula and injection molding method for ceramic bond superhard material grinding tool

A super-hard material abrasive tool and ceramic bond technology, which is applied in the direction of ceramic molding machines, grinding devices, manufacturing tools, etc., can solve the problems of severe mechanical wear of injection machine screw, low quality stability, poor microstructure uniformity of forming abrasive tools, etc. problems, to achieve the effect of not being able to form in place at one time, high quality stability, and overcoming poor uniformity of axial density

Active Publication Date: 2014-07-16
ZHENGZHOU RES INST FOR ABRASIVES & GRINDING CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the problems of poor microstructure uniformity, low quality stability and serious mechanical wear of injection machine screw rods in the prior art when injection molding technology is used to manufacture superhard material abrasive tools, the invention p

Method used

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  • Injection molding formula and injection molding method for ceramic bond superhard material grinding tool
  • Injection molding formula and injection molding method for ceramic bond superhard material grinding tool
  • Injection molding formula and injection molding method for ceramic bond superhard material grinding tool

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Embodiment 1

[0029] Cylindrical vitrified bonded cubic boron nitride grinding wheel, aspect ratio The ratio of wheel height to wall thickness is 15.

[0030] 1. Formulation design: the design density of this grinding wheel is 2.2g / cm 3 , the design ceramic system is 100wt% of the total amount, the polymer system accounts for 16wt% of the total amount, and the wetting agent is polyethylene glycol aqueous solution with a concentration of 20%, accounting for 6wt% of the ceramic system. In the ceramic system, superabrasive: auxiliary abrasive: vitrified bond = 1:0.1:0.3; in the polymer system, low-density polyethylene: paraffin: stearic acid: phenolic = 6:2:1:1.

[0031] In this formula, the superhard abrasive is cubic boron nitride, the particle size is 60 / 70, and the particle size is 213-271 μm; the auxiliary abrasive is white corundum, the particle size is 80#, and the average particle size is 200 μm.

[0032] It is planned to form 30 grinding wheels, and the raw materials are calculated a...

Embodiment 2

[0041] Manufacture of special-shaped vitrified bonded diamond grinding wheels

[0042] 1. Formulation design: the design density of this grinding wheel is 2.3g / cm 3 , the design ceramic system is 100wt% of the total amount, the polymer system accounts for 12wt% of the total amount, and the wetting agent is an aqueous solution of sodium carboxymethyl cellulose, which accounts for 7wt% of the ceramic system. In the ceramic system, superabrasive: auxiliary abrasive: vitrified bond = 1:0.5:0.5; in the polymer system, high-density polyethylene: polyethylene wax: stearyl alcohol: phenolic resin = 4:5:0.5:0.5 .

[0043] In this formula, the superabrasive is diamond, the particle size is W28, and the particle size is 14-28 μm; the auxiliary abrasive is green silicon carbide, the particle size is W20, and the particle size is 10-20 μm.

[0044] It is planned to form 50 grinding wheels, and the raw materials are calculated according to the following formula table:

[0045] Table 2 is...

Embodiment 3

[0053] Manufacture of Vitrified Bond Superhard Material Grinding Disc Shots

[0054] 1. Formulation design: the design density of this grinding wheel is 2.1g / cm 3 , the design ceramic system is 100wt% of the total amount, the polymer system accounts for 20wt% of the total amount, and the wetting agent is glycerol with a concentration of 50%, accounting for 8wt% of the ceramic system. In the ceramic system, superabrasive: auxiliary abrasive: vitrified bond = 1:0.2:0.5; in the polymer system, polypropylene: microcrystalline wax: palmitic acid: epoxy resin = 3:5:1:1.

[0055] In this formula, the superabrasive is a mixture of diamond and cubic boron nitride. Boron nitride is half of each; the auxiliary abrasive is microcrystalline corundum, the particle size is W10, and the particle size is 5-10 μm.

[0056] It is planned to form 1000 millstone pellets, and the raw materials are calculated according to the following formula table:

[0057] Table 3 is the list of ingredients of...

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Abstract

The invention relates to an injection molding formula for a ceramic bond superhard material grinding tool. The injection molding formula comprises following components: 100wt% of total amount of ceramic system, 5-30wt% of the ceramic system of macromolecule system, and 5-8wt% of the ceramic system of wetting agent. An injection molding method comprises steps of burdening, mixing materials, molding, degreasing and sintering. Due to the formula and additive amount of macromolecule bonder, friction force in molding is improved, the fluidity of the molding material is guaranteed, and the ceramic superhard material grinding tool product with good tissue homogeneity and high quality stability is prepared through injection molding without mixing and prilling.

Description

technical field [0001] The invention belongs to the field of design and manufacture of abrasive tools, and in particular relates to an injection molding formula and an injection molding method of a vitrified bond superhard material abrasive tool. Background technique [0002] Vitrified bond superhard material grinding tools have a series of advantages such as sharp grinding, high grinding precision, low temperature, high durability, good shape retention, acid and alkali resistance, etc., and are widely used in automobiles, bearings, machine tools, tools, Gems, stone and other industries. With the continuous development of machining in the direction of high quality, high precision, high efficiency, low cost, and automation, the application range of vitrified bond superhard material abrasive tools is becoming wider and wider, and the consumption is increasing. [0003] At present, the methods for manufacturing vitrified bond superhard material abrasive tools include compressi...

Claims

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Application Information

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IPC IPC(8): C04B35/5831C04B35/532C04B35/622C04B35/634B24D18/00B28B1/24
Inventor 杨威王志起
Owner ZHENGZHOU RES INST FOR ABRASIVES & GRINDING CO LTD
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