Calcium oxide-based ceramic core for casting titanium alloy and manufacturing method thereof

[0031] The method for preparing the calcium oxide-based ceramic core for titanium alloy casting of the present invention is:

[0032] Step 1: Prepare raw materials, and make 100 kilograms of calcium oxide-based ceramic cores need 10 kilograms of zirconium dioxide (ZrO 2 ), 10 kg of yttrium oxide (Y 2 o 3 ), 0.05 kg of thorium oxide (ThO 2 ) and the calcium oxide (CaO) of the balance;

[0033] Step 2: make sieved raw materials, calcium oxide (CaO), zirconium dioxide (ZrO 2 ), yttrium oxide (Y 2 o 3 ) and thorium oxide (ThO 2 ) is carried out by ball milling and sub-sieving, and the undersieve is taken to obtain the sieved raw material; the particle size of the undersieve is ≤100 microns;

[0034] In the present invention, in the ball milling process of the ball mill, the grinding body is selected as a 10mm bearing steel ball and a 5mm bearing steel ball in diameter, and 5g of 10mm bearing steel balls and 2g of 5mm bearing steel required for ball milling 1g of sieved raw ...

[0043] The method for preparing the calcium oxide-based ceramic core for titanium alloy casting of the present invention is:

[0044] Step 1: Prepare raw materials, 3 kg of zirconia (ZrO 2 ), 2 kg of yttrium oxide (Y 2 o 3 ), 0.05 kg of thorium oxide (ThO 2 ) and the calcium oxide (CaO) of the balance;

[0045] Step 2: make sieved raw materials, calcium oxide (CaO), zirconium dioxide (ZrO 2 ), yttrium oxide (Y 2 o 3 ) and thorium oxide (ThO 2 ) is carried out by ball milling and sub-sieving, and the undersieve is taken to obtain the sieved raw material; the particle size of the undersieve is ≤100 microns;

[0046] In the present invention, in the ball milling process of the ball mill, the grinding body is selected as a 10mm bearing steel ball and a 5mm bearing steel ball in diameter, and 10g of 10mm bearing steel balls and 2g of 5mm bearing steel required for ball milling 1g of sieved raw material ball.

[0047] Step 3: Mix the sieved raw material and oleic acid evenl...

[0055] The method for preparing the calcium oxide-based ceramic core for titanium alloy casting of the present invention is:

[0056] Step 1: mix raw materials, make 100 kilograms of calcium oxide-based ceramic cores need 15 kilograms of zirconium dioxide (ZrO 2 ), 5 kg of yttrium oxide (Y 2 o 3 ), 0.1 kg of thorium oxide (ThO 2 ) and the calcium oxide (CaO) of the balance;

[0057] Step 2: make sieved raw materials, calcium oxide (CaO), zirconium dioxide (ZrO 2 ), yttrium oxide (Y 2 o 3 ) and thorium oxide (ThO 2 ) is carried out by ball milling and sub-sieving, and the undersieve is taken to obtain the sieved raw material; the particle size of the undersieve is ≤100 microns;

[0058] In the present invention, in the ball milling process of the ball mill, the grinding body is selected as a 10mm bearing steel ball and a 5mm bearing steel ball in diameter, and 5g of 10mm bearing steel balls and 5g of 5mm bearing steel required for ball milling 1g of sieved raw material ...