223232233 content in a range of 0.1 to 30.0 mass% inclusive; (c) contains 90% by volume or more of tetragonal zirconia; (d) has a relative density of 95% or more; (e) has an average crystal grain size in a range of 0.25 to 0.50 μm inclusive; (f) has a minimum compression load value of Pmin (N)>600×D2.0 (D being the average media diameter); (g) has a Weibull coefficient of crushing load value of 10 or more; and (h) has a media diameter coefficient of variation of less than 6%.
Metalworking machines and tools; crushing machines and their
parts and accessories for metalworking; ceramic balls for
crushing machines for metal working [grinding media]; mining
machines and apparatus; crushing machines and their parts
and accessories for mining; ceramic balls for crushing
machines for mining [grinding media]; construction machines
and apparatus; crushing machines and their parts and
accessories for construction; ceramic balls for crushing
machines for construction [grinding media];
loading-unloading machines and apparatus; crushing machines
and their parts and accessories for loading and unloading;
ceramic balls for crushing machines for loading-unloading
[grinding media]; chemical processing machines and
apparatus; crushing machines and their parts and accessories
for chemical processing; ceramic balls for crushing machines
for chemical processing [grinding media]; textile machines
and apparatus; food or beverage processing machines and
apparatus; crushing machines and their parts and accessories
for food or beverage processing; ceramic balls for crushing
machines for food or beverage processing [grinding media];
lumbering, woodworking, or veneer or plywood making machines
and apparatus; pulp making, papermaking or paper-working
machines and apparatus; crushing machines and their parts
and accessories for pulp making, papermaking or
paper-working; ceramic balls for crushing machines for pulp
making, papermaking or paper-working [grinding media];
printing or bookbinding machines and apparatus; packaging or
wrapping machines and apparatus; plastic processing machines
and apparatus; semiconductor manufacturing machines; stone
working machines and apparatus; non-electric prime movers,
not for land vehicles; parts of non-electric prime movers,
not for land vehicles; boilers for non-electric prime movers
and engines; pneumatic or hydraulic machines and
instruments; agricultural machines; crushing machines and
their parts and accessories for agriculture use; ceramic
balls for crushing machines for agricultural use [grinding
media]; industrial fishing machines; glassware manufacturing
machines and apparatus; repairing or fixing machines and
apparatus; waste compacting machines and apparatus; crushing
machines and their parts and accessories for waste
compacting; ceramic balls for crushing machines for waste
compacting [grinding media]; waste crushing machines;
crushing machines and their parts and accessories for waste
crushing; ceramic balls for crushing machines for waste
crushing [grinding media]; mechanical elements, not for land
vehicles; manufacturing machines and apparatus of ceramic
products; ceramic processing machines and apparatus. Industrial furnaces; nuclear reactors; heating furnaces for
industrial purposes; hibachis [Japanese heating apparatus];
boilers, other than parts of non-electric prime movers or
engines; electric heaters for industrial purposes;
non-electric cooking heaters [for household purposes];
forage drying apparatus; milk sterilizers; drying apparatus
for chemical processing; recuperators for chemical
processing; steamers for chemical processing; evaporators;
distillation apparatus; heat exchangers for chemical
processing; burners; air-conditioning apparatus; water
purifying apparatus; water purifying apparatus for household
purposes; garbage incinerators; crucibles for industrial
purposes; calcining kilns for industrial purposes; ceramic
shelves as accessories for calcining kilns; tammann tubes
for industrial purposes (accessories for calcining kilns);
heating elements; electric furnaces for industrial purposes;
refractory calcining containers for industrial furnaces;
industrial furnaces and their accessories; nuclear reactors
and their accessories; feedwater heaters for industrial
purposes; heating boilers.
Wear-resistant metal-cutting tools; metalworking machines
and tools; construction machines and apparatus;
loading-unloading machines and apparatus; chemical
processing machines and apparatus; semiconductor
manufacturing machines and their parts; crushing machines;
parts and accessories for crushing machines; ceramic balls
for crushing machines [grinding media]; wear-resistant parts
for crushing machines; wear resistant parts for agitators;
food or beverage processing machines and apparatus;
lumbering, woodworking, or veneer or plywood making machines
and apparatus; pulp making, papermaking or paper-working
machines and apparatus; printing or bookbinding machines and
apparatus; repair or fixing machines and apparatus; food
mixing machines for commercial use; food peeling machines
for commercial use; food cutting, chopping and slicing
machines for commercial use; mechanical elements, not for
land vehicles; waste compacting machines and apparatus;
waste crushing machines. Crucible for industrial purposes; calcining kilns for
industrial purposes; ceramic shelves as accessories for
calcining kilns; tammann tubes for industrial purposes
(accessories for calcining kilns); heating elements;
electric furnaces for industrial purposes; refractory
calcining containers for industrial furnaces; industrial
furnaces and their parts; accessories for nuclear reactors;
regulating and safety accessories for gas pipes; drying
apparatus; heat exchangers, other than parts of machines;
industrial boilers; air-conditioning apparatus; freezing
machines and apparatus; machines and apparatus for use in
beauty salons or barbers' shops, other than chairs; garbage
incinerators for industrial purposes; garbage incinerators;
water purifying apparatus; electric heaters for industrial
purposes; non-electric cooking heaters [for household
purposes]; water purifying apparatus and their filters for
household purposes.
Metalworking machines and tools; chemical processing
machines and apparatus; semiconductor manufacturing
machines; machine elements, not for land vehicles; crushing
machines; parts and accessories for crushing machines;
ceramic balls for crushing machines [grinding media]; mining
machines and apparatus; construction machines and apparatus;
loading-unloading machines and apparatus; industrial fishing
machines; textile machines and apparatus; food or beverage
processing machines and apparatus; lumbering, woodworking,
or veneer or plywood making machines and apparatus; pulp
making, papermaking or paper-working machines and apparatus;
printing or bookbinding machines and apparatus; sewing
machines; agricultural machines; shoe making machines;
leather tanning machines; tobacco processing machines;
glassware manufacturing machines and apparatus; painting
machines and apparatus; packaging or wrapping machines and
apparatus; power-operated potters' wheels; plastic
processing machines and apparatus; machines and apparatus
for manufacturing rubber goods; stone working machines and
apparatus; non-electric prime movers, not for land vehicles;
parts for non-electric prime movers for land vehicles;
pneumatic or hydraulic machines and instruments; adhesive
tape dispensing machines; automatic stamping machines;
electric washing machines for industrial purposes; repairing
or fixing machines and apparatus; mechanical parking
systems; vehicle washing installations; food mixing machines
for commercial use; food peeling machines for commercial
use; dishwashers for industrial purposes; food cutting,
chopping and slicing machines for commercial use; electric
wax-polishing machines for industrial purposes; vacuum
cleaners for industrial purposes; lawnmowers; curtain
drawing devices electrically operated; waste compacting
machines and apparatus; waste crushing machines. Industrial furnaces; parts and accessories for industrial
furnaces; nuclear reactors; parts and accessories for
nuclear reactors; crucible for industrial purposes;
calcining kilns for industrial purposes; ceramic shelves as
accessories for calcining kilns; tammann tubes for
industrial purposes (accessories for calcining kilns);
electric furnaces for industrial purposes; refractory
calcining containers for industrial furnaces; drying
apparatus; recuperators for chemical processing; steamers
for chemical processing; evaporators; distillation
apparatus; heat exchangers, other than parts of machines;
milk sterilizers; forage drying apparatus; industrial
boilers; air-conditioning apparatus; freezing machines and
apparatus; laundry dryers, electric, for industrial
purposes; machines and apparatus for use in beauty salons or
barbers' shops, other than chairs; cooking apparatus and
installations for commercial use; industrial dish drying
machines; waste water treatment tanks for industrial
purposes; septic tanks for industrial purposes; garbage
incinerators for industrial purposes; solar water heaters;
water purifying apparatus; tap water faucets; level
controlling valves for tanks; pipe line cocks.
Metalworking machines and tools; mining machines and
apparatus; construction machines and apparatus;
loading-unloading machines and apparatus; industrial fishing
machines; chemical processing machines and apparatus;
textile machines and apparatus; food or beverage processing
machines and apparatus; lumbering, woodworking, or veneer or
plywood making machines and apparatus; pulp making,
papermaking or paper-working machines and apparatus;
printing or bookbinding machines and apparatus; sewing
machines; agricultural machines; shoe making machines;
leather tanning machines; tobacco processing machines;
glassware manufacturing machines and apparatus; painting
machines and apparatus; packaging or wrapping machines and
apparatus; power-operated potters' wheels; plastic
processing machines and apparatus; semiconductor
manufacturing machines; machines and apparatus for
manufacturing rubber goods; stone working machines and
apparatus; non-electric prime movers, not for land vehicles;
parts for non-electric prime movers for land vehicles;
pneumatic or hydraulic machines and instruments; adhesive
tape dispensing machines; automatic stamping machines;
electric washing machines for industrial purposes; repairing
or fixing machines and apparatus; mechanical parking
systems; vehicle washing installations; food mixing machines
for commercial use; food peeling machines for commercial
use; dishwashers for industrial purposes; food cutting,
chopping and slicing machines for commercial use; electric
wax-polishing machines for industrial purposes; vacuum
cleaners for industrial purposes; lawnmowers; curtain
drawing devices electrically operated; waste compacting
machines and apparatus; waste crushing machines; machine
elements, not for land vehicles; wear-resistant
metal-cutting tools; crushing machines for use in the
manufacture of pharmaceuticals; parts and accessories for
crushing machines for use in the manufacture of
pharmaceuticals; ceramic balls for crushing machines for use
in the manufacture of pharmaceuticals [grinding media];
crushing machines for use in the manufacture of cosmetics;
parts and accessories for crushing machines for use in the
manufacture of cosmetics; ceramic balls for crushing
machines for use in the manufacture of cosmetics [grinding
media]; crushing machines for use in the manufacture of
electronic components; parts and accessories for crushing
machines for use in the manufacture of electronic
components; ceramic balls for crushing machines for use in
the manufacture of electronic components [grinding media];
crushing machines for use in the manufacture of dyestuffs;
parts and accessories for crushing machines for use in the
manufacture of dyestuffs; ceramic balls for crushing
machines for use in the manufacture of dyestuffs [grinding
media]; crushing machines for use in the manufacture of
construction materials; parts and accessories for crushing
machines for use in the manufacture of construction
materials; ceramic balls for crushing machines for use in
the manufacture of construction materials [grinding media];
crushing machines for metalworking; parts and accessories
for crushing machines for metalworking; ceramic balls for
crushing machines for metalworking [grinding media];
crushing machines for chemical processing; parts and
accessories for crushing machines for chemical processing;
ceramic balls for crushing machines for chemical processing
[grinding media]; crushing machines for processing
foodstuffs; parts and accessories for crushing machines for
processing foodstuffs; ceramic balls for crushing machines
for processing foodstuffs [grinding media]; crushing
machines for agricultural machines; parts and accessories
for crushing machines for agricultural machines; ceramic
balls for crushing machines for agricultural machines
[grinding media]; crushing machines for pulp making,
papermaking or paper-working; parts and accessories for
crushing machines for pulp making, papermaking or
paper-working; ceramic balls for crushing machines for pulp
making, papermaking or paper-working [grinding media];
crushing machines for industrial waste; parts and
accessories for crushing machines for industrial waste;
ceramic balls for crushing machines for industrial waste
[grinding media]; wear-resistant parts of crushing machines
for use in the manufacture of pharmaceuticals;
wear-resistant parts of crushing machines for use in the
manufacture of cosmetics; wear-resistant parts of crushing
machines for use in the manufacture of electronic
components; wear-resistant parts of crushing machines for
use in the manufacture of dyestuffs; wear-resistant parts of
crushing machines for use in the manufacture of construction
materials; wear-resistant parts of crushing machines for
metalworking; wear-resistant parts of crushing machines for
chemical processing; wear-resistant parts of crushing
machines for processing foodstuffs; wear-resistant parts of
crushing machines for agricultural machines; wear-resistant
parts of crushing machines for pulp making, papermaking or
paper-working; wear-resistant parts of crushing machines for
industrial waste; wear-resistant parts of agitators for use
in the manufacture of pharmaceuticals; wear-resistant parts
of agitators for use in the manufacture of cosmetics;
wear-resistant parts of agitators for use in the manufacture
of electronic components; wear-resistant parts of agitators
for use in the manufacture of dyestuffs; wear-resistant
parts of agitators for use in the manufacture of
construction materials; wear-resistant parts of agitators
for metalworking; wear-resistant parts of agitators for
chemical processing; wear-resistant parts of agitators for
processing foodstuffs; wear-resistant parts of agitators for
agricultural machines; wear-resistant parts of agitators for
pulp making, papermaking or paper-working; wear-resistant
parts of agitators for industrial waste.
21 - HouseHold or kitchen utensils, containers and materials; glassware; porcelain; earthenware
Goods & Services
Tamman furnace tubes for industrial purposes; refractory firing containers for industrial furnaces; industrial furnaces; crucibles for industrial purposes, namely, for use in furnaces; electric furnaces for industrial purposes; thermocouple protection tubes for use in industrial furnaces Grinding bead media, namely, ceramic grinding balls for use in crushing material into small pieces in tumbling machinery in a wet milling and/or dry milling process
21 - HouseHold or kitchen utensils, containers and materials; glassware; porcelain; earthenware
Goods & Services
Tamman furnace tubes for industrial purposes; refractory firing containers for industrial furnaces; industrial furnaces; crucibles for industrial purposes, namely, for use in furnaces; electric furnaces for industrial purposes; thermocouple protection tubes for use in industrial furnaces Grinding bead media, namely, ceramic grinding balls for use in crushing material into small pieces in tumbling machinery in a wet milling and/or dry milling process
21 - HouseHold or kitchen utensils, containers and materials; glassware; porcelain; earthenware
Goods & Services
Tamman furnace tubes for industrial purposes; refractory firing containers for industrial furnaces; industrial furnaces; crucibles for industrial purposes, namely, for use in furnaces; electric furnaces for industrial purposes; thermocouple protection tubes for use in industrial furnaces Grinding bead media, namely, ceramic grinding balls for use in crushing material into small pieces in tumbling machinery in a wet milling and/or dry milling process
2322322322 is 65.0-79.0 wt%, the content of CaO is 2.0-6.0 wt%, the content of MgO is 2.0-8.0 wt%, and the content of unavoidable impurities are at most 0.5 wt%; the alumina sintered body has a porosity of at most 3.0%; the average diameter of the glass phases is at most 0.5 μm; the content percentage of the glass phases is 3.0-10.0% with respect to the entirety of the alumina sintered body; and the alumina sintered body has an average crystal grain size of 0.8-2.0 μm and a maximum crystal grain size of at most 6.0 μm.
C04B 35/10 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on aluminium oxide
The present invention relates to a ceramic sintered compact having an embossed surface, to a method for manufacturing the same, and to a heat treatment member comprising the ceramic sintered compact. The present invention provides a ceramic sintered compact characterized by having, on the surface thereof, recesses and projections satisfying conditions (a) through (d): (a) the maximum height Ry of protruding parts of the recesses and projections is 30 µm or less; (b) the width of the protruding parts of the recesses and projections is 120 µm or less; (c) the difference between the maximum height and minimum height of the protruding parts of the recesses and projections is 15 µm or less; and (d) there are 30-200 protruding parts of the recesses and projections in an area of 1 mm2 of the surface.
Provided are a sintered ceramic and a ceramic sphere which are inhibited from suffering surface peeling due to fatigue resulting from repetitions of loading and can attain an improvement in dimensional accuracy when subjected to surface processing and which have excellent wear resistance and durability. A ceramic-sphere inspection device is also provided with which a ceramic sphere is inspected for a flaw present in the surface layer and for snow flakes without destroying the ceramic sphere. The device is a ceramic-sphere inspection device (100) in which a ceramic sphere (S) is rotatably supported in a given position and illuminating light emitted from a light projector (110) is detected with a light receiver (120) to evaluate the state of the inner part of the surface layer, and has been configured so that the light receiver (120) does not detect the light emitted from the light projector (110) and reflected at the surface of the ceramic sphere.
G01N 21/00 - Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
G01N 21/95 - Investigating the presence of flaws, defects or contamination characterised by the material or shape of the object to be examined
C04B 35/584 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on silicon nitride
Provided are a sintered ceramic and a ceramic sphere which are inhibited from suffering surface peeling due to fatigue resulting from repetitions of loading and can attain an improvement in dimensional accuracy when subjected to surface processing and which have excellent wear resistance and durability.
G01N 21/00 - Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
D06N 7/04 - Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material characterised by their surface properties
B32B 5/16 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by features of a layer formed of particles, e.g. chips, chopped fibres, powder
G01N 21/95 - Investigating the presence of flaws, defects or contamination characterised by the material or shape of the object to be examined
C04B 35/584 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on silicon nitride
Provided are a sintered ceramic and a ceramic sphere which are inhibited from suffering surface peeling due to fatigue resulting from repetitions of loading and can attain an improvement in dimensional accuracy when subjected to surface processing and which have excellent wear resistance and durability. A ceramic-sphere inspection device is also provided with which a ceramic sphere is inspected for a flaw present in the surface layer and for snow flakes without destroying the ceramic sphere. The device is a ceramic-sphere inspection device (100) in which a ceramic sphere (S) is rotatably supported in a given position and illuminating light emitted from a light projector (110) is detected with a light receiver (120) to evaluate the state of the inner part of the surface layer, and has been configured so that the light receiver (120) does not detect the light emitted from the light projector (110) and reflected at the surface of the ceramic sphere.
C04B 35/584 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on silicon nitride
Grinding media, namely, ceramic balls, sold as accessories for use in tumbling machinery in a process by which material is crushed into small pieces; grinding machinery; parts, fittings and accessories for all the aforesaid goods.
