CN112029957A

CN112029957A - Alloy cored wire conduit and wire feeding device of wire feeding machine

Info

Publication number: CN112029957A
Application number: CN202010895567.5A
Authority: CN
Inventors: 贾子松; 彭宏亮; 庞兴利; 刘兆海
Original assignee: Pangang Group Panzhihua Iron and Steel Research Institute Co Ltd
Current assignee: Pangang Group Panzhihua Iron and Steel Research Institute Co Ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2020-12-04

Abstract

The invention discloses an alloy cored wire conduit and a wire feeding device of a wire feeding machine, relates to the field of metallurgy, and solves the problems that the existing gold cored wire conduit needs to be integrally replaced when in failure, and is long in maintenance time and low in efficiency. The technical scheme adopted by the invention is as follows: the alloy cored wire conduit comprises a main pipe and an outlet pipe, wherein one end of the main pipe is a wire inlet end, the other end of the main pipe is connected with the outlet pipe through a flange, the inner diameter of the outlet pipe is larger than that of the main pipe, and the central lines of the main pipe and the outlet pipe at the joint are superposed; the other end of the wire outlet pipe is a wire outlet end which is provided with a conical outlet. When the outlet pipe breaks down, only the outlet pipe needs to be replaced. Wire feeding device of wire feeder, including the base, a side-mounting elevating gear of base, elevating gear mounting platform, the person in charge of the above-mentioned alloy cored wire conduit of fixed mounting on the platform, the inlet wire end of being responsible for be used for with the cooperation of wire feeder outlet, the outlet wire pipe is located outside the platform and vertical arrangement. The invention is suitable for wire feeding technology in steelmaking production.

Description

Alloy cored wire conduit and wire feeding device of wire feeding machine

Technical Field

The invention relates to the field of metallurgy, in particular to an alloy cored wire conduit matched with a wire feeder and a wire feeding device comprising the conduit.

Background

The wire feeding technology is that alloy powder passes through a slag layer through an alloy cored wire by a wire feeder at a certain speed, reaches the bottom of a ladle, contacts with molten steel and is subjected to spheroidization, and aims to realize desulfurization, spheroidization, inoculation and component adjustment. At present, in a specific smelting task period of a steel-making refining LF furnace, a wire feeder coats alloy powder from the top of a ladle through a low-carbon steel strip to prepare an alloy cored wire, the alloy cored wire penetrates through a slag layer at a certain speed and reaches a certain depth of molten steel, and spheroidization is carried out. The alloy cored wire is used for steelmaking, can purify molten steel, change the form of inclusions, improve the castability and mechanical property of the molten steel, can obviously improve the yield of titanium alloy and reduce the steelmaking cost.

The existing LF furnace wire feeding machine is generally characterized in that a conduit is fixedly arranged at an outlet of the wire feeding machine, and the position of the conduit is fixed and unchanged in the whole using process. If the conduit is adjusted, the outlet of the conduit is far away from the liquid level of the steel ladle, because the alloy cored wire is softened under the high-temperature condition and the strength is reduced, the depth of the alloy cored wire injected into the molten steel is shallow, the spheroidization reaction occurs on the upper surface layer of the molten steel, the added alloy is evaporated and separated out after the molten steel is saturated, and the yield of the alloy elements is reduced. If the outlet of the conduit is closer to the liquid level of the steel ladle by adjusting the conduit, the splashed molten steel is easy to block the conduit in the process of wire feeding, so that the wire feeding fault is caused. In addition, when the existing alloy cored wire conduit is used, the front end of the conduit is easy to have a wire plugging fault; because the conduit is monolithic structure, when the front end of the conduit breaks down, the whole conduit needs to be replaced, so the maintenance process is tedious, the time is long, and the efficiency is low.

Disclosure of Invention

The invention firstly provides an alloy cored wire conduit, which solves the problems that the existing gold cored wire conduit needs to be integrally replaced when a fault occurs, the maintenance time is long, and the efficiency is low.

The technical scheme adopted by the invention for solving the technical problems is as follows: the alloy cored wire conduit comprises a main pipe and an outlet pipe, wherein one end of the main pipe is a wire inlet end, the other end of the main pipe is connected with the outlet pipe through a flange, the inner diameter of the outlet pipe is larger than that of the main pipe, and the central lines of the main pipe and the outlet pipe at the joint are superposed; the other end of the wire outlet pipe is a wire outlet end which is provided with a conical outlet.

Further, the method comprises the following steps: the inlet end of the main pipe is trumpet-shaped.

Further, the method comprises the following steps: the outer surface of the wire outlet pipe or the inner surface and the outer surface of the wire outlet pipe are coated with a coating which is not stained with molten steel.

Further, the method comprises the following steps: the inner side of one end of the outlet pipe connected with the main pipe is provided with a chamfer.

Further, the method comprises the following steps: the main pipe is a whole body and has the same inner diameter, the main pipe is sequentially provided with a horizontal section, a bent pipe section and a vertical section from the wire inlet end to the end connected with the wire outlet pipe, and the radius of the central line of the bent pipe section is not less than 700 mm.

Specifically, the method comprises the following steps: the internal diameter of the main pipe is 40mm, the internal diameter of the outlet pipe is 42mm, a chamfer of 5mm multiplied by 30 degrees is arranged at one end of the outlet pipe connected with the main pipe, the length of a conical outlet of the outlet pipe along the central line is 50mm, and the internal diameter of the end head is 28 mm.

The alloy cored wire conduit has the beneficial effects that: the main pipe is connected with the outlet pipe through the flange, the main pipe is not easy to damage in the using process, and when the outlet pipe breaks down, only the outlet pipe needs to be replaced, so that the overhauling time is shortened, the maintenance cost is reduced, and the maintenance efficiency is improved. The internal diameter of the wire outlet pipe is larger than that of the main pipe, and the alloy cored wire enters the wire outlet pipe from the main pipe and is not easy to clamp. The outlet end of the outlet pipe is provided with the conical outlet, so that the gap between the alloy cored wire and the conical outlet is reduced, and the probability of the steel slag splashing into the outlet pipe and being stuck and blocked is effectively reduced.

The inlet end of the main pipe is trumpet-shaped, so that the alloy cored wire can be conveniently penetrated from the inlet end. The inner side of the end, connected with the main pipe, of the wire outlet pipe is provided with a chamfer, so that the phenomenon that the alloy cored wire enters the wire outlet pipe from the main pipe and is blocked is further avoided.

The invention also provides a wire feeding device of the wire feeding machine, which solves the problems that the wire guide pipe of the conventional wire feeding device needs to be integrally replaced after the wire guide pipe fails, the maintenance time is long, and the efficiency is low.

The technical scheme adopted by the invention for solving the technical problems is as follows: wire feeding device of wire feeder, including the base, a side-mounting elevating gear of base, elevating gear mounting platform, the person in charge of the arbitrary alloy cored wire conduit of fixed mounting above-mentioned on the platform, the inlet wire end of being responsible for is used for cooperating with wire feeder outlet, the outlet wire pipe is located outside the platform and vertical arrangement.

Further, the method comprises the following steps: the wire inlet end of the main pipe is also provided with a sensor for detecting whether the alloy cored wire exists at the wire inlet end.

Further, the method comprises the following steps: one side of base sets up the slide rail, and the slide rail is vertical to be arranged, and the platform card sets up the cylinder in one side of slide rail, and two alloy cored wire conduit of anchor clamps installation are passed through at the top of platform to the platform bottom.

Specifically, the method comprises the following steps: the wire feeding device of the wire feeding machine further comprises the wire feeding machine and an LF (low frequency) furnace, a wire outlet of the wire feeding machine corresponds to a wire inlet end of a main pipe, a wire feeding hole is formed in a furnace cover of the LF furnace, a wire outlet pipe is located in the wire feeding hole, and a wire outlet end of the wire outlet pipe is lifted along with the lifting device to a stroke range of the wire feeding hole of the furnace cover and a position 300-500 mm above the liquid level of molten steel in the LF furnace.

The wire feeding device of the wire feeding machine has the advantages that: the alloy cored wire conduit can be lifted along with the platform under the action of the lifting device, the alloy cored wire conduit is lifted after wire feeding is finished, the conical outlet of the wire outlet pipe is far away from the surface of molten steel, and the conical outlet of the wire outlet pipe is not easily blocked by splashed molten steel, so that the distance between the conical outlet and the molten steel can be reduced when the wire is fed, the conical outlet is closer to the liquid level of the molten steel, the cored wire is injected into the molten steel more deeply, the alloy yield is improved, and the maintenance cost is reduced. The wire feeding device of the wire feeding machine is provided with a sensor, so that the wire withdrawing state of the wire feeding machine can be detected, and the lifting device can be controlled conveniently and accurately.

Drawings

Fig. 1 is a schematic structural view of an outlet pipe of the alloy cored wire conduit of the invention.

FIG. 2 is a schematic view of an embodiment of the wire feeding device of the wire feeder of the invention.

Fig. 3 is a partial enlarged view of the embodiment shown in fig. 2.

Fig. 4 is a schematic plan view of the embodiment shown in fig. 2.

Reference numerals: the device comprises a main pipe 1, a wire outlet pipe 2, a base 3, a lifting device 4, a platform 5, a wire feeder 6, a sensor 7, a slide rail 8, a clamp 9, an LF furnace 10, a furnace cover 11, a wire feeding hole 12 and an alloy cored wire 13.

Detailed Description

The invention will be further explained with reference to the drawings.

Referring to fig. 1 and 2, the alloy cored wire conduit of the invention comprises a main pipe 1 and an outlet pipe 2, wherein one end of the main pipe 1 is an inlet end, and the other end of the main pipe is connected with the outlet pipe 2 through a flange. Wherein, the wire inlet end is used for the penetration of the alloy cored wire 13 and needs to be matched with the wire feeder 6 for use. The inlet end of the main pipe 1 is trumpet-shaped, so that the alloy cored wire 13 can be conveniently penetrated. The inner diameter of the wire outlet pipe 2 is larger than that of the main pipe 1, and the central lines of the main pipe 1 and the wire outlet pipe 2 at the joint are superposed. The inner side of the end of the outlet pipe 2 connected with the main pipe 1 is also preferably provided with a chamfer. When the alloy cored wire 13 passes through the joint of the main pipe 1 and the outlet pipe 2, the alloy cored wire 13 is not easy to block. The main pipe 1 is a whole body with equal inner diameter, the main pipe 1 should be as straight as possible, and the radius of the bending part should be as large as possible to avoid blocking. For example, the main pipe 1 is a whole body with the same inner diameter, the main pipe 1 is a horizontal section, a bent pipe section and a vertical section in sequence from the wire inlet end to the end connected with the wire outlet pipe 2, and the radius of the central line of the bent pipe section is not less than 700 mm. The inner diameter of the outlet pipe 2 is slightly larger than that of the main pipe 1, for example, the inner diameter of the main pipe 1 is 40mm, the inner diameter of the outlet pipe 2 is 42mm, and a chamfer of 5mm × 30 ° is arranged at one end of the outlet pipe 2 connected with the main pipe 1. The other end of the wire outlet pipe 2 is a wire outlet end for the alloy cored wire 13 to penetrate out, and the wire outlet end is provided with a conical outlet. For example, the outlet of the outlet pipe 2 has a length of 50mm along the center line and an inner diameter of 28mm at the end. Structure of outlet pipe 2 referring to fig. 1, the dimensions in fig. 1 are marked in mm. In order to reduce the possibility of molten steel adhesion of the outlet pipe 2, the outer surface of the outlet pipe 2 or the inner and outer surfaces of the outlet pipe 2 are coated with a coating which is not sticky to the molten steel.

The second subject of the invention is a thread feeding device of a thread feeding machine, see figures 2-4. Wire feeder wire feeding device, including base 3, a side-mounting elevating gear 4 of

base

3, 4 mounting platform 5 of elevating gear, elevating gear 4 is used for driving platform 5 and goes up and down. In order to guarantee the stability that platform 5 goes up and down, one side of base 3 sets up slide rail 8, and slide rail 8 is vertical to be arranged, and platform 5 card is in one side of slide rail 8, and platform 5 can only go up and down along slide rail 8. Specifically, the lifting device is an air cylinder, and is disposed at the bottom of the platform 5, for example, outside the slide rail 8. The main pipe 1 of any one of the alloy cored wire conduit is fixedly installed on the platform 5, the wire inlet end of the main pipe 1 is used for being matched with the wire outlet of the wire feeder 6, and the wire outlet pipe 2 is located outside the platform 5 and is vertically arranged. For example, as shown in fig. 4, two alloy cored wire conduits are mounted on top of the platform 5 by a clamp 9. The inlet end of the main pipe 1 is also provided with a sensor 7 for detecting whether the alloy cored wire 13 exists at the inlet end. The sensor 7 may be a photoelectric sensor.

As shown in fig. 2, the wire feeding device of the wire feeder comprises a wire feeder 6 and an LF furnace 10, wherein an outlet of the wire feeder 6 corresponds to an inlet of the main pipe 1, a furnace cover 11 of the LF furnace 10 is provided with a wire feeding hole 12, and the wire outlet pipe 2 is positioned in the wire feeding hole 12. The outlet pipe 2 ascends and descends along with the lifting device 4, and the ascending and descending range is as follows: the outlet end of the outlet pipe 2 at least rises to the wire feeding hole 12 of the furnace cover 11 and at least falls to the position 300-500 mm above the liquid level of the molten steel in the LF furnace 10.

Before the wire feeder 6 is started, the lifting device 4 controls the platform 5 and the main pipe 1 to descend, so that the distance between the wire outlet end of the wire outlet pipe 2 and the molten steel is about 300-500 mm, for example 300-400 mm. After the wire feeding is finished, the wire feeder 6 automatically retracts to the wire inlet end of the main pipe 1, the sensor 7 detects the wire retracting state, and after the wire inlet end of the main pipe 1 is confirmed to be free of the alloy cored wire 13, the lifting device 4 controls the platform 5 and the main pipe 1 to lift, so that the wire outlet end of the wire outlet pipe 2 is retracted into the wire feeding hole 12 of the furnace cover 11, and the situation that steel slag splashes and blocks the wire outlet end of the wire outlet pipe 2 in the heating process of the LF furnace 10 is avoided. And after the outlet end of the outlet pipe 2 is damaged or blocked, the outlet pipe 2 is detached and a new outlet pipe 2 is replaced.

Claims

1. Alloy cored wire conduit, its characterized in that: the cable outlet pipe comprises a main pipe (1) and a cable outlet pipe (2), wherein one end of the main pipe (1) is a cable inlet end, the other end of the main pipe is connected with the cable outlet pipe (2) through a flange, the inner diameter of the cable outlet pipe (2) is larger than that of the main pipe (1), and the central lines of the main pipe (1) and the cable outlet pipe (2) at the joint are superposed; the other end of the wire outlet pipe (2) is a wire outlet end which is provided with a conical outlet.

2. The alloy cored wire conduit of claim 1, wherein: the inlet end of the main pipe (1) is trumpet-shaped.

3. The alloy cored wire conduit of claim 1, wherein: the outer surface of the wire outlet pipe (2) or the inner and outer surfaces of the wire outlet pipe (2) are coated with molten steel non-stick coatings.

4. The alloy cored wire conduit of claim 1, wherein: the inner side of one end of the outlet pipe (2) connected with the main pipe (1) is provided with a chamfer.

5. The alloy cored wire conduit of any one of claims 1 to 4, wherein: the main pipe (1) is a whole body, the inner diameters of the main pipe and the outlet pipe are equal, the main pipe (1) is sequentially provided with a horizontal section, a bent pipe section and a vertical section from the inlet end to the end connected with the outlet pipe (2), and the radius of the central line of the bent pipe section is not less than 700 mm.

6. The alloy cored wire conduit of claim 5, wherein: the inner diameter of the main pipe (1) is 40mm, the inner diameter of the outgoing pipe (2) is 42mm, a chamfer of 5mm multiplied by 30 degrees is arranged at one end of the outgoing pipe (2) connected with the main pipe (1), the length of a conical outlet of the outgoing pipe (2) along the central line is 50mm, and the inner diameter of the end head is 28 mm.

7. Wire feeding device of wire feeder, its characterized in that: the alloy cored wire conduit comprises a base (3), wherein a lifting device (4) is arranged on one side of the base (3), a platform (5) is arranged on the lifting device (4), a main pipe (1) of the alloy cored wire conduit according to any one of claims 1 to 6 is fixedly arranged on the platform (5), the wire inlet end of the main pipe (1) is used for being matched with a wire outlet of a wire feeder (6), and the wire outlet pipe (2) is located outside the platform (5) and is vertically arranged.

8. The wire feeding device of the wire feeding machine according to claim 7, characterized in that: the wire inlet end of the main pipe (1) is also provided with a sensor (7) for detecting whether the alloy cored wire exists at the wire inlet end.

9. The wire feeding device of the wire feeding machine according to claim 7, characterized in that: one side of base (3) sets up slide rail (8), and slide rail (8) are vertical arranges, and platform (5) card in one side of slide rail (8), and platform (5) bottom sets up the cylinder, and two alloy core-spun yarn wire conduits of anchor clamps (9) installation are passed through at the top of platform (5).

10. A thread feeding apparatus of a thread feeding machine according to claim 7, 8 or 9, characterized in that: the wire feeding device of the wire feeding machine further comprises a wire feeding machine (6) and an LF (ladle furnace) 10, a wire outlet of the wire feeding machine (6) corresponds to a wire inlet end of a main pipe (1), a wire feeding hole (12) is formed in a furnace cover (11) of the LF (10), a wire outlet pipe (2) is located in the wire feeding hole (12), and a wire outlet end of the wire outlet pipe (2) is lifted along with the lifting device (4) to the wire feeding hole (12) of the furnace cover (11) within a stroke range and is lowered to 300-500 mm above the molten steel liquid level of the LF (10).