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Ceramic metal composite bonding agent used for cube boron nitride grinding wheel

A technology of composite binder and cubic boron nitride, which is applied in the field of binder, can solve the problems of large surface roughness, difficulty in heating and clogging, easy clogging and heating, etc., and achieve good grinding wheel repair performance, improved grinding wheel performance, The effect of improving the life of the grinding wheel

Inactive Publication Date: 2009-04-15
上海鑫轮超硬磨具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The vitrified bond is made of silicon dioxide (SiO 2 )48.5-54%, aluminum oxide (Al 2 o 3 )21-26%, potassium oxide (K 2 O) 6.5-10%, sodium oxide (Na 2 O) 3-7% and barium oxide (BaO) 5-10% raw materials, the CBN grinding wheel made of ceramic bond has sharp cutting and high grinding efficiency. It is not easy to heat and block during the grinding process, and the thermal expansion is small and easy It is easier to control the machining accuracy and trim, but the surface roughness value of the workpiece is too large during the grinding process, and it is easy to form defects such as vibration lines
[0003] The CBN grinding wheel made of metal bond has good wear resistance, long service life, good shape retention, low grinding cost, and can withstand large loads, but poor self-sharpening, easy to block and generate heat, and difficult to dress

Method used

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  • Ceramic metal composite bonding agent used for cube boron nitride grinding wheel

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Experimental program
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Effect test

Embodiment 1

[0015] Vitrified metal composite bond for cubic boron nitride grinding wheel, which is composed of the following raw materials in weight percentage: silicon dioxide SiO 2 50%, aluminum oxide Al 2 o 3 25%, potassium oxide K 2 O 7%, sodium oxide Na 2 O6% and barium oxide BaO 8%, copper powder Cu 3%, tin powder Sn 0.7% and zinc powder Zn 0.3%.

Embodiment 2

[0017] Vitrified metal composite bond for cubic boron nitride grinding wheel, which is composed of the following raw materials in weight percentage: silicon dioxide SiO 2 46%, aluminum oxide Al 2 o 3 22%, potassium oxide K 2 O 8.5%, sodium oxide Na 2 6.5% and barium oxide BaO 9%, copper powder Cu 6%, tin powder Sn 1.5% and zinc powder Zn 0.5%.

[0018] The preparation process of the two embodiments is the same:

[0019] Add copper (Cu), tin (Sn) and zinc (Zn) powders (particle size ≤20 μm) that have been thoroughly mixed in advance according to the proportion of the formula to the ceramic powder (particle size ≤ 40 μm) of the original formula, stir evenly, and pass through 60 mesh and 150 mesh sieves Net each time and then back up.

[0020] Make CBN grinding wheel example with composite bond of the present invention

[0021] ①Grinding wheel formula

[0022] CBN abrasive (grain size: 80 / 100): 70%

[0023] Composite binder: 30%

[0024] Wetting agent (20% concentrati...

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Abstract

The invention relates to a ceramic metal complex binding agent used for cubic boron nitride abrasive wheels, which is characterized in that: the agent consists of the raw materials according to the weight ratio: 45-50 percent of silicon dioxide SiO2, 20 -25 percent of aluminium oxide Al2O3, 6-8.5 percent of kalia K2O, 2.5-6.5 percent of sodium oxide Na2O, 4-9 percent of baryta BaO, 2-6 percent of copper powder Cu, 0.5-1.5 percent of tin powder Su and 0.3-1 percent of zinc dust Zn. The invention has the advantages that grinding wheel grinding workpiece produced by vitrified bond of CBN grinding wheel can lead the roughness value to be raised from Ra 0.5 Mum to 0.3 Mum, flatness to reach to 0.8 Mum and parallelism to be less than or equal to 2 Mum; the service life of grinding wheel can be prolonged by 30 percent, single grinding wheel grinding workpiece is raised to 12000-15000 from 8000-10000, thus improving production efficiency and social benefit.

Description

technical field [0001] The invention relates to a ceramic-metal composite bond for cubic boron nitride (CBN) grinding wheels, which can be used for making CBN grinding wheels and belongs to the technical field of bonding agents. Background technique [0002] The vitrified bond is made of silicon dioxide (SiO 2 )48.5-54%, aluminum oxide (Al 2 o 3 )21-26%, potassium oxide (K 2 O) 6.5-10%, sodium oxide (Na 2 O) 3-7% and barium oxide (BaO) 5-10% raw materials, the CBN grinding wheel made of ceramic bond has sharp cutting and high grinding efficiency. It is not easy to heat and block during the grinding process, and the thermal expansion is small, easy It is easier to control the machining accuracy and trim, but the surface roughness value of the workpiece is too large during the grinding process, and it is easy to form defects such as vibration marks. [0003] The CBN grinding wheel made of metal bond has good wear resistance, long service life, good shape retention, low gr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B37/02
Inventor 邓希庆
Owner 上海鑫轮超硬磨具有限公司
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