摘要 |
FIELD: manufacture of abrasive tools. SUBSTANCE: binder for abrasive tools contains copper, tin, lead and nickel, and additionally contains boron with the following ratio of components, mas.%: lead, 3-10; nickel, 5-15; boron, 0.5-3; copper and tin, the balance (in ratio 4:1). EFFECT: higher efficiency. 1 tbln
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