CN117047056A - Oil protection pouring production control device of high alloy steel continuous casting crystallizer - Google Patents

Abstract

The invention discloses a high alloy steel continuous casting crystallizer oil protection pouring production control device, which includes a container. A circular oil injection hole is provided on the upper part of the container, and the circular oil injection hole has an oil injection hole cover. The crystallizer The upper part of the container is provided with: a curved booster hole pipe is installed on the side of the upper part of the container away from the circular oil injection hole, and the curved booster hole pipe is connected to an external booster pump. The lower part is provided with an oil outlet hole, and the oil outlet holes are respectively connected to hard oil outlet pipes. The hard oil outlet pipes are equipped with an oil circuit cut-off valve and a flow regulating valve. The bottom of the hard oil outlet pipe is connected to a soft oil outlet pipe through an oil pipe quick connector. Oil outlet pipe, the outlet position of the hard oil outlet pipe on the container body and the oil pipe outlet on the oil outlet fixed support device are connected through a heat-proof hose.

Description

A kind of high alloy steel continuous casting mold oil protection pouring production control device

Technical field

The invention belongs to the technical field of steelmaking, and specifically relates to a high alloy steel continuous casting mold oil protection pouring production control device.

Background technique

In recent years, the development of high-alloy steel has been relatively rapid. The surface quality problem of high-alloy steel in the steel-making process has always been a technical problem in the production control of high-alloy steel. The main surface quality problem in the production process of high-alloy steel is cracks on the surface of the cast slab. That is, surface transverse cracks and surface longitudinal cracks are difficult to control.

In the existing technology, corresponding to the steelmaking production process, problems such as many surface cracks and defects and deep vibration marks on the surface of high-alloy steel continuous-cast slabs cannot be controlled. There is pressure to control surface quality defects of high-alloy steel slabs, which cannot meet production needs.

In view of the above factors, a high-alloy steel continuous casting mold oil protection pouring production control device is specially designed. In order to alleviate the surface quality problem of high-alloy steel, it is necessary to optimize the continuous-casting process protection and heat transfer operation control to alleviate the high-alloy steel casting billet Surface quality defects control pressure and create favorable conditions for high alloy steel production.

Contents of the invention

The object of the present invention is to provide a high alloy steel continuous casting mold oil protection pouring production control device to solve the problems raised in the above background technology.

The object of the present invention is to be achieved through the following technical solution: a high alloy steel continuous casting mold oil protection pouring production control device, including a containing box, the upper part of the containing box is provided with a circular oil filling hole, and the circular oil filling hole is The hole has an oil filling hole cover, and the upper part of the crystallizer holding box is provided with: a curved boosting hole tube is installed on the side of the upper part of the box away from the circular oil filling hole, and the curved boosting hole tube is connected with an external boosting Pump connection, the lower part of the container is provided with oil outlets, and the oil outlets are respectively connected to hard oil outlet pipes. The hard oil outlet pipes are equipped with oil circuit cut-off valves and flow regulating valves. The hard oil outlet pipes are The bottom is connected to a soft oil outlet pipe through an oil pipe quick connector, and the outlet position of the hard oil outlet pipe on the container body and the oil pipe outlet on the oil outlet hole fixed support device are connected through a heat-proof hose.

Further, a liquid level gauge is installed on the end face of the container, a cut-off valve is installed on the body of the curved booster hole pipe, and a gas pipe quick connector is installed in front of the valve, and the quick connector is connected to the gas pipe at the other end of the booster pump. connect.

Further, the oil outlet fixed support device is welded by two square frames of different sizes, and the two square frames are both smaller than the square size of the inner wall of the crystallizer;

Among the two square frames of different sizes, the small square frame is on the top and the large square frame is on the bottom. The two square frames of different sizes are welded at two positions to form a trumpet shape with a large bottom and a small top. frame.

Further, three supports parallel to the plane are provided at the front and rear frames of the upper small square frame, and one support parallel to the plane is provided at the left and right frames.

Further, the crystallizer provided on the oil outlet fixed support device is provided with 8 oil outlets. The oil outlets are divided into corner oil outlets and surface oil outlets, and are respectively provided at 4 corners and 11 of the crystallizer. The middle part of the 4 sides.

Furthermore, the oil outlets provided at the four corners of the crystallizer are circular and are in contact with the right-angled parts of the corners of the crystallizer. The mold oil flows into the corners of the crystallizer and spreads in the corners.

Further, the four oil outlets provided on the crystallizer surface are located in the middle of the surface, and are flat slit-shaped, in contact with the internal parts of the crystallizer. The crystallizer oil disperses and flows into the inner wall of the crystallizer, and disperses and flows downward into the crystallizer. Between the wall of the vessel and the shell of the continuous casting billet.

Further, the corner oil outlet hole and the surface oil outlet hole are respectively arranged at corresponding positions of the oil outlet fixed support device, and the direction is obliquely outward and downward, so that the oil outlet hole is in contact with the inner wall of the crystallizer.

Further, the oil outlet fixed support device is placed at the upper mouth of the crystallizer, and the corner oil outlet and the surface oil outlet maintain the same lateral distance from the inner wall of the crystallizer.

Furthermore, there are four welding connection points at the front and rear of the square frame of the oil outlet fixing support device, and the left rear welding point and the right front welding point are separated and welded together.

Compared with the existing technology, the beneficial effects of the present invention are:

The invention's continuous casting production control device for high alloy steel using mold oil protection pouring is designed with a mold oil storage barrel with an oil injection hole and an oil leakage pipe; an oil leakage pipe outlet fixed bracket for fixing the oil leakage pipe; and a heat-proof hose connection The mold oil is filled through the oil leakage pipe and the oil leakage pipe outlet on the fixed bracket to carry out continuous casting production control operations using mold oil lubrication; it is used to protect the pouring process of high alloy steel continuous casting production and solve the surface quality control of high alloy steel. difficult problem to achieve smooth steelmaking production of high-alloy steel.

Description of the drawings

Figure 1 is a schematic diagram of the packaging box of the present invention;

Figure 2 is a schematic diagram of the connection between the container box and the additional pump according to the present invention;

Figure 3 is a schematic diagram of the oil leakage pipe outlet fixed support device of the present invention;

Figure 4 is a partially expanded schematic diagram of the fixed support device for the oil leakage pipe outlet of the present invention;

Figure 5 is a schematic diagram of the square frame of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on The embodiments of the present invention and all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

In the description of the present invention, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Connect, or connect integrally; either directly or indirectly through an intermediary. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientations or positional relationships indicated by "bottom", "inner", "outside", etc. are based on the orientations or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply the device referred to. Or elements must have a specific orientation, be constructed and operate in a specific orientation and therefore are not to be construed as limitations on the invention.

As shown in Figure 1-5, a high alloy steel continuous casting mold oil protection pouring production control device includes a container 1, a circular oil injection hole 2 is provided on the upper part of the container 1, and the circular oil injection hole 2 With an oil filling hole cover, the upper part of the crystallizer container is provided with: a curved boosting hole tube 3 is installed on the side of the upper part of the packing box 1 away from the circular oil filling hole 2, and the curved boosting hole tube 3 is connected to an external The booster pump is connected. The lower part of the container 1 is provided with an oil outlet hole 4. The oil outlet holes 4 are respectively connected to a hard oil outlet pipe 5. The hard oil outlet pipe 5 is provided with an oil circuit cut-off valve 6 and a flow regulator. Valve 7, the bottom of the hard oil outlet pipe 5 is connected to the soft oil outlet pipe through the oil pipe quick connector 8, the outlet position of the hard oil outlet pipe 5 on the container body 1 and the oil outlet fixed support device 8 The oil pipe outlets are connected through heat-proof hoses.

The upper part of the container box 1 is provided with a circular oil injection hole with an oil injection hole cover. After oil injection, the cover operation is performed to prevent dust and other substances from falling into the crystallizer container and contaminating the crystallizer oil.

In order to facilitate quick connection and realize pressure increase control during use, a cut-off valve is installed on the body of the curved pressure increase hole pipe 3, and a gas pipe quick connector is provided in front of the valve. Connect the air pipe to the other end of the pressure pump connection.

In order to facilitate the use of the semi-square frame, the semi-square frame has 4 support points to achieve independent support of the semi-square frame. When in use, it is placed at the upper mouth of the crystallizer to realize the function of the square frame supporting the crystallizer. The oil outlet fixed support device is welded by two square frames of different sizes, and both square frames are smaller than the square size of the inner wall of the crystallizer;

Among the two square frames of different sizes, the small square frame is on the top and the large square frame is on the bottom. The two square frames of different sizes are welded at two positions to form a trumpet shape with a large bottom and a small top. Frame, the upper small square frame has three supports parallel to the plane at the front and rear frames, and one support parallel to the plane at the left and right frames.

In order to facilitate the dispersion of the crystallizer oil into the inner wall of the crystallizer during use, and the dispersion and downward flow between the crystallizer wall and the continuous casting billet shell, the crystallizer provided on the oil outlet fixed support device is set 8 The oil outlets are divided into corner oil outlets 9 and surface oil outlets 10, and are respectively arranged at the 4 corners of the crystallizer and the middle of the 4 faces, and are arranged at the 4 corners of the crystallizer. The oil outlet holes 9 at the bottom are circular and are in contact with the right-angled parts of the corners of the crystallizer. The crystallizer oil flows into the corners of the crystallizer and spreads at the corners; the oil outlets 10 are provided on the four surfaces of the crystallizer. The middle part of the oil is in the shape of a flat slit and is in contact with the internal parts of the crystallizer. The crystallizer oil disperses and flows into the inner wall of the crystallizer, and then flows downward between the crystallizer wall and the continuous casting billet shell.

In order to facilitate the use state, the mold oil flows downward along the inner wall of the crystallizer during the production process and flows between the crystallizer and the continuous casting billet shell to achieve heat transfer and lubrication between the crystallizer and the continuous casting billet shell. The corner oil outlet hole 9 and the surface oil outlet hole 10 are respectively arranged at corresponding positions of the oil outlet hole fixed support device 8, and the direction is obliquely outward and downward, so that the oil outlet hole is in contact with the inner wall of the crystallizer.

In order to facilitate the installation of the square frame support device for the oil outlet as much as possible under use and ensure its performance, the oil outlet fixed support device 8 is placed at the upper mouth of the crystallizer, and the corner oil outlet 9 and The surface oil outlet hole 10 maintains the same lateral distance from the inner wall of the crystallizer.

In order to facilitate installation and use at any time during use, there are four welding connection points at the front and rear of the square frame of the oil outlet fixing support device 8. The left rear welding point and the right front welding point are separated and welded.

There are four welding connection points on the front and rear of the square frame. The left rear welding point and the right front welding point are separated and connected by welding, so that the square frame becomes two separable symmetrical semi-square frames, which are combined together. The function of supporting the 8-point oil line nozzle is realized, and the function of being dismantled at any time after a failure is realized; because the immersed water outlet is passed in the middle of the square frame during the production process, it prevents the entire square frame from being removed at any time.

1. Crystallizer oil container with oil filling hole and oil outlet pipe;

1.1 Design and production of the crystallizer oil container: Design a rectangular crystallizer oil container with a circular oil filling hole on the upper part and an oil filling hole cover. After filling the oil, perform a cover operation to prevent dust and other substances from falling into the crystallizer container and contaminating the crystal. machine oil.

1.2 Set up on the upper part of the crystallizer container: The upper part of the crystallizer oil container is equipped with a curved booster hole pipe, the pipe body is equipped with a cut-off valve, and a gas pipe quick connector is installed in front of the valve. The gas pipe quick connector can be connected to the other end of the gas pipe connected to the booster pump. Quick connector for quick connection when boost control is required to achieve boost control.

1.3 Settings in the lower part of the crystallizer box: There are 8 oil outlets in the lower part of the crystallizer box, which are connected to hard oil pipes respectively; oil cut-off valves, flow control valves and oil pipe quick connectors are installed on the oil pipes for quick connection of soft oil pipes. Oil outlet pipe; realizes the branch control and flow control of the crystallizer oil.

2. Make a fixed support device for the outlet of the oil pipe that fixes the oil pipe;

2.1 Production of the fixed support device for the outlet of the oil flow pipe: It is welded at 8 points from two square frames of different sizes. The two square frames are both smaller than the square size of the inner wall of the crystallizer;

The small square frame is on the top, and the large square frame is on the bottom. The square frame is welded with two positions of height difference to form a trumpet-shaped frame device with a large bottom and a small top.

2.2 Square frame support design: Set three supports parallel to the plane at the front and rear frames of the upper small square frame, and set one support parallel to the plane at the left and right frames (this design makes the semi-square frame have 4 (a support point to realize the independent support of the semi-square frame). When used, it is placed at the upper mouth of the crystallizer to realize the function of the square frame supporting the crystallizer.

2.3 Design of oil outlet hole

Each crystallizer is provided with 8 oil outlets, which are located at the 4 corners of the crystallizer and in the middle of the 4 surfaces; the oil outlets located at the 4 corners of the crystallizer are designed to be circular, and are in line with the corners of the crystallizer. When the right-angle parts are in contact, the crystallizer oil flows into the corners of the crystallizer and spreads at the corners; the oil outlet holes set in the middle of the four faces of the crystallizer are designed to be flat slits, which are in contact with the internal parts of the crystallizer, and the crystallizer oil is dispersed It flows into the inner wall of the crystallizer and disperses downward into the space between the crystallizer wall and the continuous casting billet shell.

2.4 Installation of oil outlet hole and square frame support device

The eight oil outlets are respectively set at the corresponding positions of the square frame support device, and the direction of the oil outlets is obliquely outward and downward, so that the oil outlets are in contact with the inner wall of the crystallizer, so as to realize the oil edge along the crystallizer during the production process. It flows downward along the inner wall of the crystallizer and flows between the crystallizer and the continuous casting billet shell to achieve heat transfer and lubrication between the crystallizer and the continuous casting billet shell.

2.5 Functional design to realize ready installation and use: There are four welding connection points on the front and rear of the square frame. The left rear welding point and the right front welding point are separated and welded together, turning the square frame into two separable symmetrical halves. The square frame is combined to support the 8-point oil line nozzle and can be removed at any time after a failure. Since the middle of the square frame passes an immersed nozzle during the production process, it prevents the overall square frame from being removed at any time, which affects Production changes.

3. Installation and use of crystallizer oil protection pouring device

3.1 Install the crystallizer oil container

Weld the support frame of the crystallizer oil container on the tundish truck, install the prepared crystallizer oil container on the support frame of the tundish truck, and secure it firmly with bolt buckles.

3.2 Install the oil outlet square frame support device

Place the prepared square frame support device for the oil outlets to the upper mouth of the crystallizer so that the eight oil outlets maintain the same lateral distance from the inner wall of the crystallizer.

3.3 Connect the crystallizer oil container and the oil outlet device

Connect the prepared heat-proof hose with quick connectors at both ends to the leakage pipe from the crystallizer oil container and the oil leakage pipe outlet on the square frame support device of the oil outlet hole, and discharge the oil through the oil outlet pipe cut-off valve and flow regulating valve. Control and debug to make the oil output of the eight oil outlets consistent and meet the production mold oil volume requirements; use mold oil lubrication for continuous casting production control operations.

3.4 Vibration marks of mold oil and mold slag billet

Comparing the use of mold oil and protective slag casting, the surface vibration marks of the slab cast by mold oil protection are shallower. The continuous casting slab produced by the continuous casting machine protection casting with mold oil has no transverse and longitudinal cracks, and the surface quality of the slab is good. Excellent.

It is obvious to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be regarded as illustrative and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is therefore intended that all claims falling within the claims All changes within the meaning and scope of equivalent elements are included in the present invention. Any reference signs in the claims shall not be construed as limiting the claim in question.

In addition, it should be understood that although this specification is described in terms of implementations, not each implementation only contains an independent technical solution. This description of the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole. , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (10)

1. The utility model provides a high alloy steel continuous casting crystallizer oil protection pouring production controlling means which characterized in that: including holding box (1), hold box (1) upper portion and set up circular oil filler point (2), and circular oil filler point (2) have the oil filler point lid, and crystallizer holds case upper portion setting: one side that holds box (1) upper portion and keep away from circular oil filler hole (2) sets up installs curved booster hole pipe (3), and curved booster hole pipe (3) are connected with external booster pump, the lower part that holds box (1) is provided with oil outlet (4), and hard play oil pipe (5) are connected respectively to oil outlet (4), set up oil circuit trip valve (6) and flow control valve (7) on hard play oil pipe (5), soft play oil pipe is being connected through oil pipe quick-operation joint (8) in the bottom of hard play oil pipe (5), hold on box (1) be connected through the heat-proof hose between the exit position of hard play oil pipe (5) and the oil pipe export on the oil outlet fixed support device (8).

2. The high alloy steel continuous casting mold oil protection pouring production control device according to claim 1, wherein: the end face of the containing box body (1) is provided with a liquid level meter (11), the pipe body of the bent pressurizing hole pipe (3) is provided with a cut-off valve, an air pipe quick connector is arranged in front of the valve, and the quick connector is connected with the air pipe at the other end of the pressurizing pump.

3. The high alloy steel continuous casting mold oil protection pouring production control device according to claim 2, wherein: the oil outlet fixing and supporting device is formed by welding 2 square frames with different sizes, and the 2 square frames are smaller than the square size of the inner wall of the crystallizer;

among the 2 square frames with different sizes, the small square frame is arranged at the upper part, the large square frame is arranged at the lower part, and the 2 square frames with different sizes are welded by adopting 2 position height differences, so that the horn-shaped frame with the lower part and the upper part is formed.

4. The high alloy steel continuous casting mold oil protection pouring production control device according to claim 3, wherein: the front and rear frame positions of the upper small square frame are respectively provided with 3 supports parallel to the plane, and the left and right frame positions are respectively provided with 1 support parallel to the plane.

5. The high alloy steel continuous casting mold oil protection pouring production control device according to claim 3, wherein: the crystallizer that sets up on the oil outlet fixed support device sets up 8 oil outlet, and the oil outlet divide into bight oil outlet (9) and face oil outlet (10), and set up the intermediate position at 4 bights of crystallizer and 4 faces respectively.

6. The high alloy steel continuous casting mold oil protection pouring production control device according to claim 5, wherein: the oil outlet holes (9) arranged at the 4 corners of the crystallizer are round and are in contact with right-angle parts of the corners of the crystallizer, and the crystallizer oil flows into the corners of the crystallizer and diffuses at the corners.

7. The high alloy steel continuous casting mold oil protection pouring production control device according to claim 5, wherein: the oil outlet holes (10) arranged on the 4 surfaces of the crystallizer are positioned at the middle part of the surfaces and are in flat slits and are contacted with the inner part of the crystallizer, and the crystallizer oil is dispersed and flows into the inner wall of the crystallizer and is dispersed and flows downwards between the wall of the crystallizer and the shell of the continuous casting billet.

8. The high alloy steel continuous casting mold oil protection pouring production control device according to claim 3, wherein: the corner oil outlet (9) and the surface oil outlet (10) are respectively arranged at the corresponding positions of the oil outlet fixed supporting device (8) and are inclined outwards and downwards, so that the oil outlet is contacted with the inner wall of the crystallizer.

9. The high alloy steel continuous casting mold oil protection pouring production control device according to claim 3, wherein: the oil outlet fixing and supporting device (8) is arranged at the upper opening of the crystallizer, and the corner oil outlet (9) and the surface oil outlet (10) are kept at the same transverse distance from the inner wall of the crystallizer.

10. The high alloy steel continuous casting mold oil protection pouring production control device according to claim 3, wherein: four welding connection points are arranged at the front and the rear of the square frame of the oil outlet fixing and supporting device (8), and the left rear welding point and the right front welding point are separated and connected in a welding mode.