Category Archives: About Us
About us
Kowa Group is a family driven company aiming to expand through its business verticals, developing new markets, improving its global presents and venturing in to diversified business activities such as energy and environment.
Kowa Abrasive KK was established in 1947 at Nara Prefecture -Japan. Kowa Abrasive is one of the largest suppliers of Fused minerals and abrasive grains in Japan. Kowa is still holding the leading position of being the biggest supplier of Brown fused Alumina for their specialty Abrasive blasting customers. Kowa has established a global reputation with customers through their consistent high quality products supplies and outstanding service commitments.Kowa Group’s other firms manufacture and trade many adjacent market products like Refractory products and Bonded and coated abrasive grains and also venturing in to non-conventional energy sources.
Kowa Abrasive is a reputed supplier in blasting media with their various abrasive grains. Kowa has many years of practical experience and technical expertise in the design, development and application of abrasive blasting grits.
Kowa has its headquarters in Japan with warehouse facilities in NARA Japan and own office at North America. Kowa caters global market through their representatives at Asian Markets, North American markets and Middle East markets in addition to its with own sales team at Japan and USA.Kowa abrasive is a global supplier of Brown and White Fused Aluminum oxide, Black and Green Silicon Carbide, Fused Mullite, Fused Zirconia, Alumina Zirconia, Chromium Oxide and Plastic media. Kowa started its first manufacturing plant at Nara prefecture Japan for Abrasive grains then expanded its activity by adding up refractory plant , Abrasive plant and then in to International business.KOWA supplies grains in Macro and Micro grits with standards of JIS, FEPA and ANSI for blasting applications and refractory group grits for refractory applications. Kowa also manufactures custom specified sizes against request.
Zirconia Alumina 40
Description:
KZA40 is a kind of fused Zirconia Alumina abrasive with the characteristic of high intensity, high toughness and high self-sharpness ability
Applications:
KZA40 is widely used in producing organic bonded grinding wheels where the rapid stock removal is required, it can be used to grind stainless steel, cast, titanium alloy and nickel alloy etc.
Typical Chemical Analysis:
Grain Sizes Available (F):
6, 8, 10, 12, 14, 16, 20, 24, 30, 36.
Typical Bulk Density:
| Grit(F) g/cc Grit(F) g/cc |
|
6 2.28 16 2.14 |
|
8 2.25 20 2.13 10 2.22 24 2.11 |
| 12 2.20 30 2.08 |
| 14 2.17 36 2.08 |
Grain Size Distribution :
Upon ANSI B74.12-2001, FEPA-Standard 42-1:2006 or ISO 8486-1.
Packing:
20 Kg/25Kg Paper bags, 25 Kg PP bags,50 Lbs Paper bags, 2000lbs Jumbo,1MT Jumbo Bags etc
Zirconia Alumina 25
Description:
KZA25 is a kind of fused Zirconia Alumina abrasive with very blocky shape and tough edge. Due to the crystal is very small, this kind of abrasive grain always presents the highest toughness and very strong impact resistance.
Applications:
KZA25 is widely used in production of the overload big hot pressed steel condition wheels.
Typical Chemical Analysis:
Typical Physical Properties:
Grain Sizes Available (F):
6, 8, 10, 12, 14, 16, 20, 24, 30, 36.
Typical Bulk Density:
| Grit(F) g/cc Grit(F) g/cc |
|
6 2.28 16 2.16 |
|
8 2.25 20 2.13 10 2.22 24 2.10 |
| 12 2.20 30 2.09 |
| 14 2.19 36 2.08 |
Grain Size Distribution :
Upon ANSI B74.12-2001, FEPA-Standard 42-1:2006 or ISO 8486-1.
Packing:
20 Kg/25Kg Paper bags, 25 Kg PP bags,50 Lbs Paper bags, 2000lbs Jumbo,1MT Jumbo Bags etc.
Zirconia Alumina Coated
Description:
KZAP is a kind of fused Zirconia Alumina abrasive FEPA “P” grit, it is got by fusing zirconia sand, aluminum powder and other material.
Applications:
With the sharp edge grain shape and very high toughness characteristic, KZAP is suitable for making coated abrasive products request a high eliminating rate.
Typical Chemical Analysis:
Typical Physical Properties:
Macrogrit Sizes Available (P):
12, 16, 20, 24, 30, 36, 40, 50, 60, 80, 100, 120.
Typical Bulk Density:
| Grit(P) g/cc Grit(P) g/cc Grit(P) g/cc |
| 12 2.26 36 2.05 100 1.94 |
| 16 2.20 40 2.05 120 1.94 |
| 20 2.18 50 2.03 |
| 24 2.13 60 2.01 |
| 30 2.06 80 1.98 |
Grain Size Distribution :
Upon ANSI B74.18-2006, FEPA-standard 43-1:2006 or ISO 6344-2: 1998
Packing:
20 Kg/25Kg Paper bags, 25 Kg PP bags,50 Lbs Paper bags, 2000lbs Jumbo,1MT Jumbo Bags etc.
SiC Green Macro Bonded
Description:
KGC-GPA is a green, friable, medium bulk density silicon carbide abrasive grain. To get this kind of grains, we specially process the ingots, separate the magnetic material, and sieve the grains carefully to get a complete range of grit sizes.
Applications:
KGC-GPA can be used in refractory, ceramic and abrasive area, such as making vitrified bonded grinding wheels, resin bonded tools, to process cast iron, hard alloy, tatium alloy and high speed steel. As loose grains, it is widely used for polishing none-metal material like ceramic, glass, stone, agates, jades and jewels.
Typical Chemical Analysis:
Physical Properties:
Macrogrit Grain Sizes Available (F or JIS):
12, 14, 16, 20, 22, 24, 30, 36, 40, 46, 54, 60, 70, 80, 90, 100, 120, 150, 180, 220.
Microgrit Sizes Available:
F240, 280, 320, 360, 400, 500, 600, 800, 1000, 1200.
JIS240,280,320,360,400,500,600,700,800,1000,1200,1500,2000,2500,3000,4000,6000,8000.
Bulk Density:
| Grit(F) g/cc Grit(F) g/cc Grit(F) g/cc Grit(F) g/cc |
| 12 1.42 30 1.51 60 1.51 120 1.44 |
| 14 1.46 36 1.50 70 1.50 150 1.41 |
| 16 1.52 40 1.50 80 1.50 180 1.38 |
| 20 1.52 46 1.50 90 1.50 220 1.35 |
| 24 1.52 54 1.51 100 1.47 |
Grain Size Distribution :
Upon ANSI B74.12-2001, FEPA-Standard 42-1:2006 or ISO 8486-1.
Packing:
20 Kg/25Kg Paper bags, 25 Kg PP bags,50 Lbs Paper bags, 2000lbs Jumbo,1MT Jumbo Bags
Silicon carbide- Green
It is one kind of black silicon carbide Abrasive grain, To get the kind of grains, we specially process the ingots, separate the magnetic material, and sieve the grains carefully to get a complete range of grit sizes.
As an abrasive, CF-16 is used in making vitrified bonded grinding wheels, resign bonded grinding wheels. As loose grains, it is widely used for pressure blasting, surface finish and other general industrial applications.
MSDS Silicon Carbide
1. Product Name Company
2. Composition/Information
Chemical Name: Silicon Carbide
CAS number:409-21-2
Impurities contributing to There are no restrictive to the regular use of the product the hazard:
3. Hazards Identification
Adverse human health Effects： High concentrations would cause irritation to the respiratory system Environmental Effects: No environmental effect has been identified in the regular use of the product Physical and Chemical Hazards: No physical or chemical hazard has been identified in the regular use of the product
Specific Hazards: No specific hazard has been identified in the regular use of the product
4. First aid Measures
Inhalation: In case of respiratory difficulties, move to ventilated areas and look for medical assistance, Skin Contact: In case of skin irritation, wash the affected local with fresh water and look for medical Assistance
Eye Contact: In case of eyes irritation, wash your eyes with fresh water, and look for medical assistance Ingestion: Look for medical assistance.
5. Fire-Fighting Measures
General Information: Not Flammable.Extinguishing Media: Use the adequate extinguisher according to the fire source.
6. Accidental Release Measures
Personal Precautions: In high levels of airborne exposure, respiratory and eyes protection. If possible, use a exhausting system. Environmental Precautions: This product is inert to the environment and don`t request any special precaution
7.Handling And Storage
Handling
Technical Measures: There are no restrictions.
Precautions: Material may be stared in dry and ventilated local, avoiding humidity contact. Avoid contact with other products to prevent contaminations. Respect a maximum of three pallets or big bags stack. This material must be kept away from sharp-edged materials to avoid package damaging. Safe handling Advice: Respect the maximum stack of three pallets or super sacs.
Storage
Technical Measures: There are no restrictions.
Storage conditions: May be stored in dry, ventilated and free of contaminations. It’s not recommended humidity
Levels higher than 65%.
Incompatible Products: No restrictive information has been found about incompatible products during storage.
Packing Materials: It’s recommended to main the material in its original packing, including original pallet.
8. Exposure Controls/Personal Protection
Personal Protective Equipment
Respiratory Protection: In normal conditions a NIOSH/MSHA approved air respirator is recommended.
Hand Protection: Impervious gloves are recommended.
Eye Protection: Approval Chemical workers goggles.
Skin and Body Protection: Entire body clothes are recommended.
Airborne Exposure Limit:6mg/㎥
9. Physical and Chemical Properties
Physical State: Solid
Color: Black
Odor: Odorless
ph{24%} : 9
Fusion Point: 2600℃
Flash Point: Not applicable
Explosion Properties: Not applicable
Density: 3.20g/ cm²
Solubility: Not soluble in water
10. Reactivity
Hazardous Reaction: There are no restrictions.
Hazardous Decomposition Products: There are no restrictions in the regular use of the material.
11. Toxicological Information
Acute Toxicity: There are no restrictions in the regular personal exposition. Local Effects: There are no restrictions in the regular personal exposition. Other Indication: The inhalation of dust must be prevented, because inert material can also harm the respiratory ways.
12. Ecological Information
Information related with normal routes of exposition had not been found . Environmental problems are not expected when the product is handled and used as indicated.13.Disposal Considerations Waste from Residues: Waste of this product must be dispose of in accordance with federal, state and local regulations.
There is no restrictive hazardous information about recycling this product. Residues of this product must be disposed according to the regulation. Contaminated Packing: Waste of this product packing must be dispose of in accordance with federal, state and local regulation.
13. Contaminated Packing :
Waste of this product packing must be dispose of in accordance with federal ,state and local regulations. There is no restrictive hazardous information about recycling the packing.
14. Transport Information
Transport Information: There are no restrictions.
15. Regulatory Information
There are no specific international regulations for this product. State and local regulations must be consulted.
16. Other Information
It is not required any special procedure to collect the material. This electro fused is not recommended for use in food, medicine and cosmetic products. The improper use of this product or its information above exempts KOWA of any responsibility.
All data showed in this document are typical, small variations may occur.
Silicon Carbide- Black Micro
Description:
High quality, water classified silicon carbide powders graded to exacting standards, e.g. FEPA, JIS and custom. Silicon carbide powders are manufactured by various techniques to optimize shape, surface area, density, chemistry and/or particle size distribution for various applications.
Applications:
Our powders are used for wiresawing semiconductor materials, lapping, fine bonded and coated application, refractory, precision ceramics, composites and other critical applications. Material is available for hot pressing, sintering and other forming techniques.
Typical Chemical Analysis:
| Silicon Carbide(SiC) | 97.80% | |
| Silicon (Si) | 0.30% | |
| Silicon Dioxide (SiO2) | 0.50% | |
| Carbon ( C ) | 0.30% | |
| Iron (Fe) | 0.08% | |
| Aluminum (Al) | 0.10% |
Physical Characteristics:
| Crystal Form: | Hexagonal (Alpha SiC) | ||
| True Density: | 3.95 g/cm3 | ||
| Hardness: | Knoop (100) – 2500; Mohs 9.0+ | ||
| Melting Point: | SiC does not melt but dissociates | ||
| Color: | Black |
Sizing Test Methods:
| FEPA Standard 42-2: 2006 |
| JIS R 6001: 1998 |
| Micron sizes based on Coulter Multisizer |
FEPA F Standard – Powders/Microgrits
| D3% | D94% | ||||||||
| Size | Max. | D50% | Min. | ||||||
| 240 | 70 | 42.5-46.5 | 28 | ||||||
| 280 | 59 | 35.0-38.0 | 22 | ||||||
| 320 | 49 | 27.7-30.7 | 16.5 | ||||||
| 360 | 40 | 21.3-24.3 | 12 | ||||||
| 400 | 32 | 16.3-18.3 | 8 | ||||||
| 500 | 25 | 11.8-13.8 | 5 | ||||||
| 600 | 19 | 8.3-10.3 | 3 | ||||||
| 800 | 14 | 5.5-7.5 | 2 | ||||||
| 1000 | 10 | 3.7-5.3 | 1 | ||||||
| 1200 | 7 | 2.5-3.5 | 1(80%) |
Packing:
20 Kg/25Kg Paper bags, 25 Kg PP bags,50 Lbs Paper bags, 2000lbs Jumbo,1MT Jumbo Bags etc.