Steel ingot water-cooling crystallization process using riser

[0027] Type: high-quality carbon steel, steel type: 20, carbon content: 0.17-0.23%; tonnage: 8 tons;

[0028] After the front and rear parts of the water-cooled mold are fixed by bolts, the condensed water is fed into the water-cooled mold in advance, the temperature of the incoming water is less than 36°C, and the pressure of the incoming water is 0.5 MPa;

[0029] After the VD furnace is released, the temperature of the molten steel is 1585±5°C. After the temperature is controlled to 1570-1580°C, it is slowly poured into the mold of the water-cooled mold through the sprue, and the pouring time of the ingot body is 24-26min;

[0030] The pouring speed of the riser is lower than the pouring speed of the ingot body, and the pouring time of the riser is 6-8min;

[0031] Continuously feed condensed water, keep warm for 30 minutes, and release the steel ingot from the mold after condensation;

[0032] The steel ingot after demoulding is put into the insulation cover without the i...

[0035] Type: high-quality carbon steel, steel type: 65Mn, carbon content: 0.62-0.70%, tonnage: 11 tons;

[0036] After the front and rear parts of the water-cooled mold are fixed by bolts, the condensed water is fed into the water-cooled mold in advance, the temperature of the incoming water is less than 36°C, and the pressure of the incoming water is 0.5 MPa;

[0037] After the VD furnace is released, the temperature of the molten steel is 1550±5°C. After the temperature is controlled to 1535-1545°C, it is slowly injected into the mold of the water-cooled mold through the runner, and the pouring time of the ingot body is 15 minutes;

[0038] The pouring speed of the riser is lower than the pouring speed of the ingot body, and the pouring time of the riser is 10 minutes;

[0039] Continuously feed condensed water, keep warm for 70 minutes, and release the steel ingot from the mold after condensation;

[0040] The steel ingot after demoulding is put into the insulation cover w...

[0043] Type: alloy steel, steel type: 5CrMnMo, carbon content: 0.50-0.60%, tonnage 18 tons;

[0044] After the front and rear parts of the water-cooled mold are fixed by bolts, the condensed water is fed into the water-cooled mold in advance, the temperature of the incoming water is less than 36°C, and the pressure of the incoming water is 0.5 MPa;

[0045] After the VD furnace is released, the temperature of the molten steel is 1555±5°C. After the temperature is controlled to 1540-1550°C, it is slowly poured into the mold of the water-cooled mold through the runner, and the pouring time of the ingot body is 18 minutes;

[0046] The pouring speed of the riser is lower than the pouring speed of the ingot body, and the pouring time of the riser is 10 minutes;

[0047] Continue to feed condensed water, keep warm for 90 minutes, and release the steel ingot from the mold after condensation;

[0048] The steel ingot after demoulding is put into the heat preservation cover without h...