Method for the manufacture of a bonded abrasive grinding product
AssigneeUnicorn Industries
InventorDerek Obersby
Life of this patent
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Abstract
In the manufacture of grinding wheels or other grinding products of either the vitrified or organic type, the heat treatment for drying and/or firing or curing respectively is provided by microwave energy so that the heating is progressive from the inside of the wheel to the outside and the process is greatly speeded up. It is also possible according to the invention to include a steel or other metallic reinforcing ring in a grinding wheel without it being damaged or destroyed during firing.
Claims13
In a method of manufacturing a bonded abrasive product consisting of a shaped body of a vitrified or organic matrix material with abrasive material dispersed therein, comprising the steps of compressing a mass of bonding ingredients containing the dispersed abrasive particles for forming the body to the required shape and subsequently heat treating the compressed body for drying, vitrification and/or curing:
- the improvement being that the said heat treatment is carried out by microwave heating carried out at a frequency located in a narrow band centered at about 2450 MHz.
In a method of manufacturing a grinding wheel which consists of an abrasive material in a resinoid matrix material which comprises the steps of compressing a mass of particulate matrix material containing dispersed abrasive particles whereby the wheel is first formed into the required shape and subsequently heat treating said shaped wheel for curing the matrix material:
- the improvement that the said heat treatment is carried out by microwave heating at a frequency of about 2450 MHz.
In a method of manufacturing a grinding wheel which consists of an abrasive material in a vitrified matrix material which comprises the steps of compressing a mass of particulate matrix material containing dispersed abrasive particles whereby the wheel is first formed into the required shape and subsequently heat treating the shaped wheel for drying and vitrification of the matrix material:
- the improvement that the said heat treatment during drying is carried out by microwave heating at a frequency of about 2450 MHz.
In a method of manufacturing a bonded abrasive product consisting of a shaped body of a vitrified or organic matrix material with abrasive material dispersed therein, comprising the steps of compressing a mass of bonding ingredients containing the dispersed abrasive particles for forming the body to the required shape and subsequently heat treating the compressed body for vitrification or curing:
- the improvement being that the said heat treatment is carried out by microwave heating carried out at a frequency located in a narrow band centered at about 2450 MHz.
Dependencies are inferred from the claim text.