Titanium alloy casting ingot surface glass coating and preparing method thereof
A technology of surface glass and glass coating, which is applied to the device and coating of the surface coating liquid to improve the high temperature stability, solve the effect of anti-oxidation and forging cracking, and improve the coefficient of thermal expansion
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Embodiment 1
[0030] The glass coating on the surface of the TC17 titanium alloy ingot of this embodiment is prepared from the following raw materials in mass percentages: 65% of glass matrix, 5% of clay, 30% of aluminum oxide and silicon oxide with a particle size of less than 5 μm; the clay is Calcined kaolin of grade 3 or above;
[0031] The glass matrix is prepared by smelting raw materials with the following mass percentages: B 2 o 3 5%, Al 2 o 3 4%, ZrO 2 8%, Cr 2 o 3 9%, CaO 11%, KNO 3 5%, the balance is SiO 2 ; The preparation process of the glass matrix is: the B 2 o 3 、Al 2 o 3 , ZrO 2 、Cr 2 o 3 , CaO, KNO 3 and SiO 2 Put it in a ball mill and mix it evenly, then melt it at 1450°C for 4 hours, quench it with water to get the glass glaze slag and dry it, then use a ball mill to mill it at a speed of 500r / min for 100 hours to get a particle size smaller than 10μm glass powder.
[0032] The additives in the glass coating preparation raw materials in this embod...
Embodiment 2
[0041] The glass coating on the surface of the TC4 titanium alloy ingot of the present embodiment is prepared from the raw materials of the following mass percentages: glass matrix 65%, water glass 35%; the water glass is potassium silicate with a modulus of 3.5 and a mass concentration of 43%. water glass;
[0042] The glass matrix is prepared by smelting raw materials with the following mass percentages: B 2 o 3 12%, Al 2 o 3 20%, ZrO 2 8%, NiO 3%, BaO 3%, Na 2 CO 3 8%, the balance is SiO 2 ; The preparation process of the glass matrix is: the B 2 o 3 、Al 2 o 3 , ZrO 2 , NiO, BaO, Na 2 CO 3 and SiO 2 Put it in a ball mill and mix it evenly, then smelt it at 1600°C for 10 hours, quench it with water to get the glass glaze slag and dry it, then use a ball mill to mill it at a speed of 500r / min for 100 hours to get a particle size smaller than 10μm glass powder.
[0043] The preparation method of the TC4 titanium alloy ingot surface glass coating of the pr...
Embodiment 3
[0049] The difference between this embodiment and Example 2 is that the composite slurry obtained in step 2 is pre-placed on the cleaned TC4 titanium alloy ingot surface in step 1 by means of pneumatic spraying, and the spraying air pressure of the pneumatic spraying is It is 0.4MPa, and the spraying distance is 40cm.
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