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Quality abrasives
- 1. Ervin Amastee l The World’s Standard for Quality “Quality Coatings require Quality Abrasives”
- 2. Ervin Amastee l The World’s Standard for Quality Specifications for High Carbon Cast Steel Shot S.A.E. J 827 Cast Steel Shot & J1993 Steel Grit I.S.O. 11124-3 High Carbon Steel Shot and Grit S.S.P.C. AB-3 Newly Manufactured Steel AbrasivesChemical Analysis - Carbon 0.85 - 1.2% - Manganese 0.6 - 1.2% - Silicon .4 min - Sulphur & Phosphorus 0.05% max Microstructure - Uniform martensite General Appearance - Details appearance and permitted defects Hardness - Standard hardness 40 - 50 Rc Mechanical Tests - Tests life and transmitted energy Screen Analysis - SAE J444 and I.S.O. 11124-3
- 3. Ervin Amastee l The World’s Standard for Quality Advantages of using a Quality Supplier. Ervin products are made to International Standards. Ervin Q.M.S. is used throughout the company. Process control is used throughout all stages of manufacture.
- 4. Ervin Amastee l The World’s Standard for Quality
- 5. Ervin Amastee l The World’s Standard for Quality
- 6. Ervin Amastee l The World’s Standard for Quality Process Flow Chart
- 7. Ervin Amastee l The World’s Standard for Quality Control Plan
- 8. Ervin Amastee l The World’s Standard for Quality Ervin Test Machine
- 9. Ervin Amastee l The World’s Standard for Quality Comparison: Ervin v Various manufacturers. Ervin Other Life T.E. 2797 2787 99% 122% 2797 2176 129% 133.8% 2762 2419 114% 114% 2755 2485 101% 111% 2755 1648 164% 98% 2755 2296 120% 120% 2713 2965 92% 106%
- 10. Ervin Amastee l The World’s Standard for Quality Comparison between Steel Grit and Iron Grit Life Cycles. Product G 24 Iron HG 25 Steel LG 25 Steel Hardness 55.8 Rc average 64.8 Rc average 57.1 Rc average 100% replacemen t 336 passes 417 passes 1676 passes Life Cycle Ratio 100 124 499
- 11. Ervin Amastee l The World’s Standard for Quality Life of abrasive relative to hardness % Retained %retained % retained % retained %retained Shot Shot SG grit LG grit HG grit Iron grit Passes
- 12. Ervin Amastee l The World’s Standard for Quality Rapid Breakdown of Low Quality Abrasives causes Wear to Parts
- 13. Ervin Amastee l The World’s Standard for Quality Abrasive Breakdown In the blast machine, quality shot of standard hardness can be expected to complete 3000 cycles before being so small as to lack IMPACT. In the blast machine,quality shot will break down in a progressive manner. This will create and maintain the operating mixture.
- 14. Ervin Amastee l The World’s Standard for Quality Abrasive Breaks Down in Two Ways Fracture Breakdown Flaking Breakdown
- 15. Ervin Amastee l The World’s Standard for Quality Breakdown Due to Flaking
- 16. Ervin Amastee l The World’s Standard for Quality
- 17. Ervin Amastee l The World’s Standard for Quality Breakdown Due to Fracture Repeated impact causes fracture Half-size shot is rounded by continued impact... and breaks again... and is rounded again...
- 18. Ervin Amastee l The World’s Standard for Quality Operating Mix Is generated by the breakdown of the abrasive in a regular manner. Regular replenishment maintains the operating mixture distribution. The abrasive is the “tool” of the shot- blasting machine.
- 19. Ervin Amastee l The World’s Standard for Quality These two machines are similar!!...
- 20. Ervin Amastee l The World’s Standard for Quality The Tools Of the Two Machines Work Mix Lathe tool Shotblast tool
- 21. Ervin Amastee l The World’s Standard for Quality Operating Mix A fine operating mix can increase the cleaning time by as much as 30% A coarse operating mix can increase the cleaning time by as much as 30% The abrasive is the “tool” of the shot blasting machine.
- 22. Ervin Amastee l The World’s Standard for Quality Operating Mix An uncontrolled operating mix will produce an uncontrolled surface finish. The abrasive is the “tool” of the shot blasting machine.
- 23. Ervin Amastee l The World’s Standard for Quality The penalties of Improper Operation Work mix coarse = Increased cleaning time Work mix fine = Increased cleaning time Contamination = High rate of equipment wear High separator = More abrasive consumption takeout size Unbalanced = Unacceptable cleaning or profileWork Mix
- 24. Ervin Amastee l The World’s Standard for Quality
- 25. Ervin Amastee l The World’s Standard for Quality The Costs of Operating depend upon: The surface finish required The speed of cleaning The cost of abrasive consumption The cost of equipment maintenance