Low-density large-pore ceramic grinding wheel and preparation method thereof
A technology of ceramic grinding wheel and large pores, applied in the field of grinding wheel, can solve the problems of low green strength of grinding wheel, affecting product quality, cracking of ceramic grinding wheel, etc., and achieve the effect of reducing the rate of morphology defect, shortening drying time, and reducing dosage
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[0042] In addition, the present invention also provides a preparation method of a low-density large-porous vitrified grinding wheel, which is used to manufacture the low-density large-porous vitrified grinding wheel as in Example 1, comprising:
[0043] S1, formulation design, formulate according to the following components,
[0044]
[0045] Wherein, the resin binder is a mixture of resin liquid and diluent, and the ratio of resin liquid to diluent is 1:1 to 1:4;
[0046] S2, mixing materials, mix the resin binder and the abrasive evenly, the mixing time is 5-8min, then add the pore-forming agent and mix for about 3-5min, then add the vitrified binder and mix for 10-15min; after mixing evenly, according to the particle size of the abrasive carry out sieving treatment;
[0047] S3, molding, the speed of the press turntable is controlled at 30-50r / min when spreading the material;
[0048] S4. Curing: After the grinding wheel blank is left to stand naturally for 12-24 hours...
Embodiment 1
[0054] 20kg of abrasive, 1kg of vitrified bond, 3kg of pore forming agent, 1kg of resin bond; specifically, the abrasive is white corundum, and the vitrified bond includes 45wt%% SiO 2 , 5wt% B 2 o 3 , 10wt% Al 2 o 3 , 10wt% alkali metal oxide, the pore-forming agent is treated walnut shell, the resin liquid is furfural, and the diluent is alcohol.
[0055] First, mix the resin binder and abrasive grains evenly for about 5 minutes, then add the pore-forming agent and mix for about 3 minutes, and finally add the vitrified bond and mix for 10 minutes; after mixing evenly, sieve according to the particle size of the abrasive and pore-forming agent; There is no need to stuff the material after the material is filled. In order to prevent the blank from solidifying and hardening, it can be directly pressed and formed; the speed of the press turntable is controlled at 30r / min when spreading the material to improve the uniformity of the material; after the grinding wheel blank is l...
Embodiment 2
[0057] 20kg of abrasive, 2kg of vitrified bond, 1kg of pore-forming agent, and 0.4kg of resin binder. Among them, the abrasive is white corundum, and the vitrified bond includes 50wt% 0 of SiO 2 , 10wt% B 2 o 3 , 15wt% Al 2 o 3 , 15wt% alkali metal oxide, the pore-forming agent is treated walnut shell, the resin liquid is phenolic, and the diluent is alcohol.
[0058] First, mix the resin binder and abrasive grains evenly for about 6 minutes, then add the pore-forming agent and mix for about 4 minutes, and finally add the vitrified bond and mix for 12 minutes; after mixing evenly, sieve according to the particle size of the abrasive and pore-forming agent; There is no need to stuff the material after filling. In order to prevent the blank from starting to solidify and harden, it can be directly pressed and formed; the speed of the press turntable is controlled at 40r / min when spreading the material to improve the uniformity of the spreading; Directly heat and cure at 100°...
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