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A low temperature cermet bonded grinding wheel

A ceramic bond, low-temperature metal technology, used in metal processing equipment, abrasives, grinding devices, etc., can solve the problems of high sintering temperature and high sintering cost, reduce sintering waste, shorten production cycle, reduce sintering effect on fuel cost

Inactive Publication Date: 2016-02-24
威海无缝新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a low-temperature cermet bonded grinding wheel and a preparation method thereof, which solves the problems of high firing temperature and high firing cost of existing ceramic grinding wheels

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for preparing a low-temperature metal-ceramic bonded grinding wheel, comprising the following steps:

[0027] 1) Preparation of low melting point ceramics: according to weight percentage, weigh SiO 2 :30%, Al 2 o 3 :15%, H 3 BO 3 : 42%, NaOH: 8%, KOH: 5%, mixed by dilution method, the mixing time is 2h, passed through a 200 mesh sieve, filled into a high temperature crucible and melted at 1200°C for 1 hour in a melting furnace for rapid cooling, crushed by a ball mill to 2 ~5μm, dried through a 200-mesh sieve, and set aside;

[0028] 2) In terms of weight percentage, Sn powder is 30%, low-melting point inorganic ceramics is 40%, and diamond is 30%. Sn powder and low-melting point ceramics are mixed and mixed according to the specified ratio, and then mixed with diamond;

[0029] 3) Molding: Weigh the required molding material and pour it evenly into the mold to scrape it flat, press it on the press with a pressure of 350kg per square centimeter, and press ...

Embodiment 2

[0033] A method for preparing a low-temperature metal-ceramic bonded grinding wheel, comprising the following steps:

[0034] 1) Preparation of low melting point ceramics: according to weight percentage, weigh SiO 2 :45%, Al 2 o 3 :7%, H 3 BO 3 : 40%, NaOH: 5%, KOH: 3%, mix evenly by dilution method, pass through 200 mesh sieve, pour into high temperature crucible, melt at 1300℃ for 3 hours in a melting furnace, quench rapidly, crush in ball mill to 2~5μm, and dry 200 mesh sieve, ready for use;

[0035] 2) In terms of weight percentage, Pb powder is 35%, low-melting point inorganic ceramics is 40%, and CBN is 25%. Pb powder and low-melting point ceramics are mixed according to the specified ratio, and then mixed with CBN;

[0036] 3) Molding: Weigh the required molding material and pour it evenly into the mold to scrape it flat, press it on the press with a pressure of 500kg per square centimeter, and the pressing temperature is 200°C, the pressing time is 90min, and the ...

Embodiment 3

[0040] A method for preparing a low-temperature metal-ceramic bonded grinding wheel, comprising the following steps:

[0041] 1) Preparation of low melting point ceramics: according to weight percentage, weigh SiO 2 :40%, Al 2 o 3 :5%, H 3 BO 3 : 45%, NaOH: 7%, KOH: 3%, mixed by dilution method, passed through 200 mesh sieve, put into high temperature crucible, smelted at 1250℃ for 1.5 hours and quenched, crushed by ball mill to 2~5μm, dried 200 mesh sieve, ready for use;

[0042] 2) According to the weight percentage, Zn powder is 30%, low-melting point inorganic ceramics is 50%, and CBN is 20%. Zn powder and low-melting point ceramics are mixed according to the specified ratio, and then mixed with CBN;

[0043] 3) Molding: Weigh the required molding material and pour it evenly into the abrasive tool to scrape it flat, press it on the press with a pressure of 400kg per square centimeter, and the pressing temperature is 180°C, the pressing time is 60min, and the mold is d...

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Abstract

The invention relates to a low-temperature metal ceramic blinder grinding wheel and a production method thereof. The production method includes the steps of 1, producing low-melting-point ceramic, namely proportionally mixing materials of the low-melting-point ceramic by a dilution method, smelting for 1-3 hours at the temperature of 1200-1300 DEG C, quenching, crushing to 2-5 micrometers by a ball mill, drying, and screening with a 200-mesh screen to obtain the low-melting-point ceramic for use; 2, mixing low-melting-point metal and the low-melting-point ceramic according to a specified proportion, and mixing obtained mixture with abrasive material; 3, forming, namely, weighing required forming material, evenly pouring the forming material into a grinding tool, leveling down, forming by pressing at the temperature of 120-200 DEG C for 30-90 minutes, and releasing; 4, sintering: placing the grinding tool in a program-thermostatic oven, sintering for two hours, and cooling; 5, checking whether waste products are present in the production process or not, so as to obtain the low-temperature metal ceramic blinder grinding wheel. The low-temperature metal ceramic blinder grinding wheel has the advantages that energy resources are saved and sintering fuel cost is reduced.

Description

technical field [0001] The invention relates to a low-temperature cermet bond grinding wheel and a preparation method thereof, belonging to the field of mold processing. Background technique [0002] Grinding wheel is the most important type of abrasive tool in grinding process. The grinding wheel is a porous body made by adding a binder to the abrasive, compacting, drying and firing. Grinding wheel is the most widely used type of grinding tool. It rotates at high speed when used, and can be used for rough grinding, semi-finishing and Fine grinding as well as grooving and parting off etc. The substance used to bond the abrasive in the grinding wheel is called a bonding agent. The performance of the bonding agent determines the strength, impact resistance, heat resistance and corrosion resistance of the grinding wheel. Due to the good rigidity, heat resistance and chemical stability of vitrified bond abrasives, its application range is wider. Generally, the firing tempera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24D3/14B24D18/00
Inventor 袁德禄
Owner 威海无缝新材料有限公司