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Multi-combination grinding wheel for grinding camshaft and preparation method of multi-combination grinding wheel
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A technology for camshafts and grinding wheels, which is applied in the field of multi-combination grinding wheels for grinding camshafts and its preparation. It can solve the problems of easy burn and hole making, and difficult grinding of high-hardness camshafts, so as to prevent workpiece burns and improve mechanical strength and hardness. , the effect of high hardness
Pending Publication Date: 2022-02-08
白鸽磨料磨具有限公司
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[0005] The purpose of the present invention is to provide a multi-combination grinding wheel for grinding camshafts and its preparation method, improve the grinding efficiency of camshafts, and solve the problems of difficult grinding, easy burning and difficult hole making of high-hardness camshafts
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Embodiment 1
[0037] In the first step, the single crystal corundum and white corundum are uniformly mixed to obtain a mixed abrasive. In the mixed abrasive, the mass fraction of single crystal corundum is 25%, and the mass fraction of white corundum is 60%.
[0038] In the second step, add a density of 1.1 g / cm to the mixed powder obtained in the first step 3 , Accounting for 4% water glass of the total amount of abrasive and bonding agent, the abrasive is wet as a whole.
[0039] The 3rd step, adding massfraction in the wet mixed abrasive material gained in the second step is the vitrified bond powder of 15%, adds dextrinpowder simultaneously, and dextrin powder massfraction is 1.2% of abrasive material and bonding agent total number, increases The combination performance of the abrasive and the binder, fully mixed evenly.
[0040] Further, the binder is a vitrified binder, a high-temperature binder of a clay-feldsparsystem.
[0041] In the fourth step, additionally add aluminum oxide...
Embodiment 2
[0053] In the first step, the single crystal corundum and white corundum are uniformly mixed to obtain a mixed abrasive, in which the single crystal corundum mass fraction is 30%, and the white corundum mass fraction is 57%.
[0054] In the second step, add a density of 1.3 g / cm to the mixed powder obtained in the first step 3 , accounting for 3% of the total amount of abrasive and bonding agent, water glass makes the abrasive as a whole wet.
[0055] The 3rd step, adding massfraction in the wet mixed abrasive material gained in the second step is the vitrified bond powder of 13%, adds dextrin powder simultaneously, and dextrin powder massfraction is 1.33% of abrasive material and bonding agent total part, increases The combination performance of the abrasive and the binder, fully mixed evenly.
[0056] Further, the binder is a vitrified binder, a high-temperature binder of a clay-feldsparsystem.
[0057] In the fourth step, additionally add aluminum oxide hollow spheres to t...
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Abstract
The invention belongs to the field of grinding materials and grinding tools, and particularly relates to a multi-combination grinding wheel for a grinding camshaft and a preparation method of the multi-combination grinding wheel. The combined grinding wheel comprises 3-8 grinding wheels with different sizes and specifications, and the grinding wheels are combined in parallel for use, so that the grinding wheels have higher balance and higher grinding performance. According to the grinding wheel for thegrinding camshaft, by selecting the proper grinding material and adding the pore-forming agent aluminum oxide hollow balls, the structure strength of the grinding wheel is improved, the grinding performance is improved, the chip removal performance is high, burning is prevented, and the grinding wheel is free of toxicity and pollution and has excellent mechanical performance and environment friendliness.
Description
technical field [0001] The invention belongs to the field of abrasive abrasives, in particular to a multi-combination grinding wheel for grinding camshafts and a preparation method thereof. Background technique [0002] The camshaft is an important part that controls the opening and closing of the valve stem of the engine block, and its grinding wheel quality and grinding effect play a vital role. [0003] At present, most of the domestic traditional camshaft grinding wheels use white corundum, brown corundum and chrome corundum materials, while for alloy steels containing vanadium and chromium with higher hardness, single crystal corundum with better toughness and grinding performance is used to meet Better shape and dimensional accuracy processing requirements. [0004] At present, the pore-forming material commonly used in the preparation of pore grinding wheels is refined naphthalene particles. The refined naphthalene will volatilize at around 220 °C and produce a stron...
Claims
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