CN205393483U - Compound crystallizer for titanium -nickel alloy continuous casting - Google Patents

Abstract

Composite crystallizer for continuous casting of titanium-nickel alloy. The composition of this product includes: a cooling water jacket, the cooling water jacket has a through hole, the through hole is connected to the water-cooled copper wall, the water-cooled copper wall is connected to the graphite crystallizer jacket, and the graphite crystallizer jacket A boron nitride lining is connected, and the boron nitride lining is connected to a calcium oxide crucible, and the calcium oxide crucible is used in conjunction with a heating induction coil. The utility model is used for continuous casting of titanium-nickel alloy.

Description

Composite Mold for Continuous Casting of Titanium-Nickel Alloy

Technical field:

The utility model relates to a compound crystallizer for continuous casting of titanium-nickel alloy.

Background technique:

Continuous casting is an advanced casting method. Its principle is to continuously pour molten metal into a special metal mold called a crystallizer, and the solidified (crusted) casting is continuously poured from the other end of the crystallizer. Pulled, it obtains castings of any length or a specific length. However, due to the active chemical properties of titanium-nickel alloys, it is difficult to melt and form when reacting with most refractory materials at high temperatures. At present, most of the titanium-nickel alloys produced at home and abroad adopt the die-casting-peeling-rolling process. The riser and defective parts of the surface must be removed from the ingot cast by this method, so the loss of metal is large, and the processing is cumbersome, which greatly increases the cost of the titanium-nickel alloy. Replacing traditional mold casting by continuous casting is a trend in the current research on titanium-nickel alloys. The forming process of continuous casting is mainly completed in the mold. The mold is the core component of the continuous casting system. Strong continuous casting slab shell.

Invention content:

The purpose of the utility model is to provide a compound crystallizer for titanium-nickel alloy continuous casting which can obtain a smooth surface.

Above-mentioned purpose realizes by following technical scheme:

A compound crystallizer for continuous casting of titanium-nickel alloy, which comprises: a cooling water jacket, the cooling water jacket has a through hole, the through hole is connected to a water-cooled copper wall, and the water-cooled copper wall is connected to a graphite crystal The outer casing of the graphite crystallizer is connected with a boron nitride inner lining, and the boron nitride inner lining is connected with a calcium oxide crucible, and the calcium oxide crucible is used in conjunction with a heating induction coil.

In the composite crystallizer for continuous casting of titanium-nickel alloy, the bottom of the calcium oxide crucible has a connecting through hole, and the connecting through hole is connected to the top of the boron nitride lining, and the graphite crystallization The overcoat of the device is connected to the sealing ring gland, and a sealing ring is installed between the graphite crystallizer outer casing and the sealing ring gland, and the sealing ring is installed in the notch at the lower end of the water-cooled copper wall. A dummy rod is installed inside the boron nitride lining, and an alloy melt is contained in the calcium oxide crucible.

In the compound crystallizer for continuous casting of titanium-nickel alloy, the bottom side of the cooling water jacket is provided with a cooling water inlet, and the cooling water inlet is connected to a cooling water inlet pipe, and the bottom of the cooling water jacket is on the other side A cooling water outlet is opened on the side, and the cooling water outlet is connected to a cooling outlet pipe.

Beneficial effect:

1. The utility model achieves the purpose of obtaining a titanium-nickel alloy billet with a smooth surface by continuous casting. Because the metal is cooled rapidly, the crystal is dense, the structure is uniform, and the mechanical properties are good.

2. When the composite crystallizer of the utility model works, the vacuum degree can reach 10 ^-2 Pa, which can greatly improve the quality of titanium-nickel alloy castings.

3. The utility model has no riser of the pouring system, and the ingot does not need to be cut and tailed during rolling, which saves metal and improves the yield.

4. The utility model realizes the continuous casting production of titanium-nickel alloy, exempts molding and other processes, reduces labor intensity, and improves production efficiency.

5. The components of the utility model are tightly connected, coordinated in action, and have good sealing performance.

Description of drawings:

Accompanying drawing 1 is the structural representation of this product.

detailed description:

Example 1:

A composite crystallizer for titanium-nickel alloy continuous casting, which consists of: a cooling water jacket 1, characterized in that: the cooling water jacket has a through hole 13, the through hole is connected to a water-cooled copper wall 2, the The water-cooled copper wall is connected to the graphite crystallizer jacket 3, the graphite crystallizer jacket is connected to the boron nitride lining 7, the boron nitride lining is connected to the calcium oxide crucible 11, and the calcium oxide crucible is matched with a heating induction coil 8 use.

Example 2:

In the composite crystallizer for titanium-nickel alloy continuous casting described in embodiment 1, the bottom of the calcium oxide crucible is provided with a connecting through hole 14, and the connecting through hole is connected to the top of the boron nitride lining. The graphite crystallizer overcoat is connected to the seal ring gland 4, and a seal ring 5 is arranged between the graphite crystallizer overcoat and the seal ring gland, and the seal ring is installed in the water-cooled copper wall. In the notch 17 at the lower end, a dummy rod 9 is installed inside the boron nitride lining, and an alloy melt 10 is contained in the calcium oxide crucible.

Example 3:

In the composite crystallizer for continuous casting of titanium-nickel alloys described in Example 2, a cooling water inlet 6 is provided on the bottom side of the cooling water jacket, and the cooling water inlet is connected to a cooling water inlet pipe 15, and the cooling water inlet A cooling water outlet 12 is opened on the other side of the bottom of the sleeve, and the cooling water outlet is connected to a cooling outlet pipe 16 .

Example 4:

In the composite crystallizer for titanium-nickel alloy continuous casting described in Example 3, the dummy rod is closely attached to the inner side of the lower part of the water-cooled copper wall, and is pressed tightly by the sealing ring and the sealing ring gland, A dynamic sealing system is formed when the dummy bar pulls the slab. After the alloy melt (titanium-nickel) is pulled out, in order to ensure the temperature of the alloy melt, the output power needs to be reduced, so that the heat generation of the graphite crystallizer jacket is reduced, and the solid-liquid interface moves towards the alloy melt. When the solid-liquid interface Entering the interior of the calcium oxide crucible, the continuous casting process is forced to terminate, and a cylindrical billet is obtained.

Example 5:

The composite crystallizer for continuous casting of titanium-nickel alloy described in the above-mentioned embodiments is formed by a boron nitride inner lining located on the upper part of the graphite crystallizer jacket, and close to the induction heating zone below the heating induction coil to form a stable hot end melting alloy, the alloy melt is placed in a calcium oxide crucible for melting the alloy, and a heating induction coil is arranged around the calcium oxide crucible.

Claims (3)

1. A compound crystallizer for continuous casting of titanium-nickel alloy, its composition comprises: cooling water jacket, it is characterized in that: described cooling water jacket has through hole, described through hole connects water-cooled copper wall, described The water-cooled copper wall is connected to a graphite crystallizer jacket, and the graphite crystallizer jacket is connected to a boron nitride inner lining, and the boron nitride inner lining is connected to a calcium oxide crucible, and the calcium oxide crucible is used with a heating induction coil. 2. The composite crystallizer for continuous casting of titanium-nickel alloy according to claim 1, characterized in that: the bottom of the calcium oxide crucible has a connecting through hole, and the connecting through hole is connected to the boron nitride The top of the inner liner, the graphite crystallizer outer cover is connected to the sealing ring gland, and a sealing ring is installed between the graphite crystallizer outer cover and the sealing ring gland, and the sealing ring is installed in the In the notch at the lower end of the water-cooled copper wall, a dummy rod is installed inside the boron nitride lining, and an alloy melt is contained in the calcium oxide crucible. 3. The compound crystallizer for continuous casting of titanium-nickel alloy according to claim 2, characterized in that: the bottom side of the cooling water jacket is provided with a cooling water inlet, and the cooling water inlet is connected to a cooling water inlet pipe, A cooling water outlet is opened on the other side of the bottom of the cooling water jacket, and the cooling water outlet is connected to a cooling outlet pipe.