Method for manufacturing metal binder cubic boron nitride grinding wheel with self-lubricating function

A cubic boron nitride and metal bond technology, applied in metal processing, metal processing equipment, manufacturing tools, etc., can solve problems such as difficulty and practicality, reduce grinding heat generation, promote grinding potential, and reduce grinding temperature. Effect

Inactive Publication Date: 2008-03-26
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the internal cooling grinding wheel can overcome the defect that the cooling medium cannot enter the grinding arc area to a certain extent, it is still difficult to put it into practice

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The Ti-containing alloy is a Cu-Sn-Ti alloy with a Ti content of 10% and a mass ratio of Cu and Sn of 2:1. The HBN particle diameter is 10 microns, and its mass accounts for 5% of the total mass of the binder layer material. The bond layer material (the mixture of Cu-Sn-Ti alloy and HBN particles) was mechanically stirred for 10 minutes, and then the grinding wheel blank was made in the order of grinding wheel metal matrix / bond layer material / cubic boron nitride abrasive grain, wherein the grinding wheel base material was 45 # steel. Put the grinding wheel blank into the heating furnace, and carry out vacuum liquid phase activation and sintering at a heating temperature of 960 °C and a holding time of 20 minutes to make the Cu-Sn-Ti alloy react with HBN particles and CBN abrasive particles, and then cool with the furnace to Bake at room temperature.

Embodiment 2

[0017] The Ti-containing alloy is an Ag-Cu-Ti alloy with a Ti content of 5% and a mass ratio of Ag and Cu of 72:28. The HBN particle diameter is 10 microns, and its mass accounts for 5% of the total mass of the binder layer material. The bond layer material (the mixture of Ag-Cu-Ti alloy and HBN particles) was mechanically stirred for 10 minutes, and then the grinding wheel blank was made in the order of grinding wheel metal matrix / bond layer material / cubic boron nitride abrasive grain, wherein the grinding wheel base material was Stainless steel 1Cr18Ni9Ti. Put the grinding wheel blank into the heating furnace, and carry out vacuum liquid phase activation and sintering at a heating temperature of 900 ° C and a holding time of 15 minutes to make the Ag-Cu-Ti alloy react with HBN particles and CBN abrasive particles, and then cool down with the furnace to Bake at room temperature.

Embodiment 3

[0019] The Ti-containing alloy is a Cu-Sn-Ti alloy with a Ti content of 10% and a mass ratio of Cu and Sn of 2:1. The HBN particle diameter is 10 microns, and its mass accounts for 10% of the total mass of the binder layer material. The bond layer material (the mixture of Cu-Sn-Ti alloy and HBN particles) was mechanically stirred for 10 minutes, and then the grinding wheel blank was made in the order of grinding wheel metal matrix / bond layer material / cubic boron nitride abrasive grain, wherein the grinding wheel base material was 45 # steel. Put the grinding wheel blank into the heating furnace, and carry out vacuum liquid phase activation and sintering at a heating temperature of 980°C and a holding time of 15 minutes to make the Cu-Sn-Ti alloy react with HBN particles and CBN abrasive particles, and then cool with the furnace to Bake at room temperature.

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Abstract

The process for producing cubic boron nitride (CBN) grinding wheel with self-lubricating metal binding agent belongs to the field of super hard grinding tool making technology. Through addition of hexagonal boron nitride (HBN) grains in 5-15 wt% to Ag-Cu-Ti alloy or Cu-Sn-Ti alloy to form the mixture to constitute the grinding wheel binding agent layer and the subsequent vacuum liquid phase activating and sintering process including heating to 900-1000 deg.c and maintaining for 5-20 min for the alloy and the HBN grains and CBN grains to produce chemical reaction to make the CBN grinding wheel with self-lubricating metal binding.

Description

technical field [0001] The invention relates to a method for manufacturing a metal-bonded cubic boron nitride grinding wheel with a self-lubricating function, belonging to the field of superhard abrasive tool manufacturing. Background technique [0002] Cubic boron nitride (CBN) is the second artificial superhard material that was first successfully produced in 1957 by the American physical chemist R.H.Wentorf using a static pressure catalyst method similar to synthetic diamond, after artificial diamond. Compared with diamond, CBN not only has high hardness, high wear resistance, low friction coefficient and other characteristics, but also has superior thermal stability and chemical stability to ferrous metals than diamond. At this stage, various grinding wheels made of CBN abrasives have been used for efficient and precise grinding of nickel-based superalloys to replace traditional corundum abrasive grinding wheels. [0003] It should be pointed out that although CBN abras...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D3/10B24D17/00B24D99/00
Inventor 徐九华丁文锋傅玉灿苏宏华肖冰
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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