阅读说明：本技术 控制var熔炼炉铸锭装炉间隙的装置及方法 (Device and method for controlling cast ingot charging gap of VAR smelting furnace ) 是由 罗小峰 于 2019-10-25 设计创作，主要内容包括：本发明公开了一种控制VAR熔炼炉铸锭装炉间隙的装置及方法,涉及冶金领域,解决按照现有方式控制VAR熔炼炉铸锭装炉间隙劳动强度大以及时间长的问题。本发明采用的技术方案是：控制VAR熔炼炉铸锭装炉间隙的装置,包括绳索、夹板、垫块和绳索收容器,绳索上穿设夹板,各个夹板的底板和侧板之间形成卡槽,卡槽内放置垫块；绳索收容器包括绕线轮,绳索的一端缠绕连接于绕线轮,绳索的另一端可与绳索收容器连接形成环形并紧固。本发明控制VAR熔炼炉铸锭装炉间隙的方法将调整铸锭与铜质结晶器间隙工序提前到铸锭放置于基座后,安装速度快,提高了装炉效率,降低了工人劳动强度,而且可以保证铸锭四周与铜质结晶器的间隙的均匀性。(The invention discloses a device and a method for controlling a VAR smelting furnace ingot charging gap, relates to the field of metallurgy, and solves the problems of high labor intensity and long time of controlling the VAR smelting furnace ingot charging gap according to the existing mode. The technical scheme adopted by the invention is as follows: the device for controlling the cast ingot charging gap of the VAR smelting furnace comprises ropes, clamping plates, cushion blocks and rope containers, wherein the clamping plates are arranged on the ropes in a penetrating mode, clamping grooves are formed between bottom plates and side plates of the clamping plates, and the cushion blocks are placed in the clamping grooves; the rope container includes a reel, one end of the rope is wound and connected to the reel, and the other end of the rope can be connected to the rope container to form a ring shape and fastened. According to the method for controlling the charging gap of the cast ingot of the VAR smelting furnace, the process of adjusting the gap between the cast ingot and the copper crystallizer is advanced to the process of placing the cast ingot on the base, the mounting speed is high, the charging efficiency is improved, the labor intensity of workers is reduced, and the uniformity of the gap between the periphery of the cast ingot and the copper crystallizer can be ensured.)

1. Device of control VAR smelting furnace ingot casting dress stove clearance, its characterized in that: the rope fixing device comprises a rope (1), clamping plates (2), cushion blocks and a rope container (3), wherein at least three clamping plates (2) penetrate through the rope (1), each clamping plate (2) comprises a bottom plate and side plates connected to two sides of the bottom plate respectively, a clamping groove is formed between the bottom plate and the two side plates, and the cushion blocks are placed in the clamping grooves; the rope container (3) comprises a winding wheel (31), one end of the rope (1) is wound and connected to the winding wheel (31), the other end of the rope (1) is a free end, and the free end of the rope (1) can be tightly connected with the rope container (3) and is formed into a ring shape.

2. The device for controlling the charging gap of the VAR smelting furnace ingot casting according to claim 1, characterized in that: the outer side of the bottom plate of the clamping plate (2) is arc-shaped.

3. The device for controlling the charging gap of the VAR smelting furnace ingot casting according to claim 1, characterized in that: the clamping plate (2) is also provided with a locking structure for fastening the cushion block in the clamping groove.

4. The device for controlling the charging gap of the VAR smelting furnace ingot casting according to the claim 3, characterized in that: the locking structure is as follows: threaded holes (21) are formed in the side plates of the clamping plates (2), and locking bolts pointing to the clamping grooves are arranged in the threaded holes (21).

5. The device for controlling the charging gap of the VAR smelting furnace ingot casting according to claim 4, characterized in that: the clamping plate (2) is made of a steel plate through bending, two side plates of the clamping plate (2) are perpendicular to the bottom plate, threading holes (22) are respectively formed in the positions, close to the bottom plate, of the two side plates of the clamping plate (2), and the rope (1) penetrates through the two threading holes (22); any one side plate of the clamping plate (2) is provided with two threaded holes (21).

6. The device for controlling the charging gap of the VAR smelting furnace ingot casting according to any one of claims 1 to 5, characterized in that: the rope (1) is a steel wire rope with the diameter of phi 2mm, the cushion block is a wood block, four clamping plates (2) penetrate through the rope (1), the size of a bottom plate of each clamping plate (2) is 80-100 mm multiplied by (70-80) mm multiplied by 5mm, and the size of a side plate of each clamping plate is 80-100 mm multiplied by (35-40) mm multiplied by 5 mm.

7. The device for controlling the charging gap of the VAR smelting furnace ingot casting according to any one of claims 1 to 5, characterized in that: the rope container (3) comprises a frame body (33), a reel (31) is arranged in the frame body (33), a handle (34) connected with a rotating shaft of the reel (31) is arranged on the outer side of the frame body (33), and a reel locking buckle (35) is arranged between the frame body (33) and the reel (31);

a hanging ring is arranged on one side of the frame body (33), the free end of the rope (1) is connected with a hook (4) matched with the hanging ring, and a limiting elastic sheet (5) is arranged on the hook (4); or one side of the rope container (3) is provided with a thread end clamping groove (32), a pressing plate is further arranged at the thread end clamping groove (32), and the free end of the rope (1) can be placed in the thread end clamping groove (32) and fastened through the pressing plate.

8. The method for controlling the ingot casting charging gap of the VAR smelting furnace is characterized by comprising the following steps of: the device for controlling the charging gap of the VAR smelting furnace ingot casting adjusts the gap between the ingot casting and the copper crystallizer by the device for controlling the charging gap of the VAR smelting furnace ingot casting as claimed in any one of the claims 1 to 7, and comprises the following steps:

s1, horizontally placing the cast ingot and marking the installation position on the cast ingot;

s2, winding the free end of the rope (1) around the ingot for a circle, and connecting the free end with the rope container (3) to form a ring;

s3, adjusting the distance between the clamping plates (2) to enable the clamping plates (2) to be uniformly distributed on the outer side of the cast ingot, and enabling the outer side of the bottom plate of the clamping plate (2) to be in direct contact with the cast ingot; the rope (1) is tightened and clamped and fixed through the rope container (3); a cushion block is placed in the clamping groove of the clamping plate (2) and is fastened;

s4, repeating steps S2 and S3 at each mounting position;

s5, hoisting the cast ingot to a preset position on a base of the copper crystallizer, hoisting and sleeving the copper crystallizer outside the cast ingot, and screwing bolts between the base and the copper crystallizer after the cast ingot is in place;

s6, hoisting the whole copper crystallizer and the base into a hearth of the VAR smelting furnace, sealing the furnace body, vacuumizing to a preset value, filling Ar gas to a set air pressure after the leakage detection is qualified, carrying out smelting auxiliary electrode welding, opening the furnace after cooling, checking the welding quality, and taking down the device for controlling the charging gap of the cast ingot of the VAR smelting furnace after the leakage detection is qualified.

Technical Field

The invention relates to the field of metallurgy, in particular to a device and a method for controlling a furnace charging gap of a VAR smelting furnace ingot.

Background

The charging of the ingot is one of the intermediate procedures of VAR smelting, and the conventional charging sequence of the ingot is as follows: firstly, hoisting a smelting electrode to a base by using a travelling crane; then hoisting the copper crystallizer to be sleeved outside the ingot, screwing down the base and the connecting bolt of the copper crystallizer, and hoisting the copper crystallizer to the VAR hearth by using a crane; and then manually adopting a long iron rod, such as a steel chisel, adjusting the gap between the ingot and the copper crystallizer, placing the wooden cushion block fixed at the end of the long iron rod at the gap, and repeatedly placing three to four cushion blocks around the ingot and the copper crystallizer.

The cast ingot has large mass and height, and the labor intensity is high and more time is needed to be consumed when the gap between the cast ingot and the copper crystallizer is manually adjusted by adopting the long iron bar.

Disclosure of Invention

The invention firstly provides a device for controlling the charging gap of an ingot of a VAR smelting furnace, which solves the problems of high labor intensity and long time of controlling the charging gap of the ingot of the VAR smelting furnace according to the existing mode.

The technical scheme adopted by the invention for solving the technical problems is as follows: the device for controlling the cast ingot charging gap of the VAR smelting furnace comprises a rope, clamping plates, cushion blocks and a rope container, wherein at least three clamping plates are arranged on the rope in a penetrating mode, each clamping plate comprises a bottom plate and side plates connected to two sides of the bottom plate respectively, a clamping groove is formed between the bottom plate and the two side plates, and the cushion blocks are placed in the clamping grooves; the rope container includes a winding wheel, one end of the rope is wound and connected to the winding wheel, the other end of the rope is a free end, and the free end of the rope can be tightly connected with the rope container and forms a ring shape.

Further, the method comprises the following steps: the outer side of the bottom plate of the clamping plate is arc-shaped.

Further, the method comprises the following steps: the clamping plate is further provided with a locking structure for fastening the cushion block in the clamping groove.

Specifically, the method comprises the following steps: the locking structure is as follows: threaded holes are formed in the side plates of the clamping plates, and locking bolts pointing to the clamping grooves are arranged in the threaded holes.

More specifically: the clamping plate is made of a steel plate through bending, two side plates of the clamping plate are perpendicular to the bottom plate, threading holes are respectively formed in the positions, close to the bottom plate, of the two side plates of the clamping plate, and a rope penetrates through the two threading holes; any one side plate of the clamping plate is provided with two threaded holes.

Specifically, the method comprises the following steps: the rope is a steel wire rope with the diameter of phi 2mm, the cushion block is a wood block, four clamping plates penetrate through the rope, the size of a bottom plate of each clamping plate is (80-100) mmX (70-80) mmX 5mm, and the size of a side plate of each clamping plate is (80-100) mmX (35-40) mmX 5 mm.

Specifically, the method comprises the following steps: the rope container comprises a frame body, a reel is arranged in the frame body, a handle connected with a rotating shaft of the reel is arranged on the outer side of the frame body, and a reel locking buckle is further arranged between the frame body and the reel; one side of the frame body is provided with a hanging ring, the free end of the rope is connected with a hook matched with the hanging ring, and the hook is provided with a limiting elastic sheet; or one side of the rope container is provided with a thread end clamping groove, the thread end clamping groove is also provided with a pressing plate, and the free end of the rope can be placed in the thread end clamping groove and fastened through the pressing plate.

The second subject of the invention is: the method for controlling the charging gap of the cast ingot of the VAR smelting furnace adjusts the gap between the cast ingot and the copper crystallizer by the device for controlling the charging gap of the cast ingot of the VAR smelting furnace, and comprises the following steps:

s1, horizontally placing the cast ingot and marking the installation position on the cast ingot;

s2, winding the free end of the rope around the ingot for a circle, and connecting the free end with the rope container to form a ring;

s3, adjusting the distance between the clamping plates to enable the clamping plates to be uniformly distributed on the outer side of the ingot, wherein the outer side of the bottom plate of the clamping plate is in direct contact with the ingot; the rope is tightened and clamped and fixed through the rope container; placing a cushion block in the clamping groove of the clamping plate and fastening the cushion block;

s4, repeating steps S2 and S3 at each mounting position;

s5, hoisting the cast ingot to a preset position on a base of the copper crystallizer, hoisting and sleeving the copper crystallizer outside the cast ingot, and screwing bolts between the base and the copper crystallizer after the cast ingot is in place;

s6, hoisting the whole copper crystallizer and the base into a hearth of the VAR smelting furnace, sealing the furnace body, vacuumizing to a preset value, filling Ar gas to a set air pressure after the leakage detection is qualified, carrying out smelting auxiliary electrode welding, opening the furnace after cooling, checking the welding quality, and taking down the device for controlling the charging gap of the cast ingot of the VAR smelting furnace after the leakage detection is qualified.

The device and the method for controlling the ingot casting charging gap of the VAR smelting furnace have the beneficial effects that: the process of adjusting the gap between the ingot and the copper crystallizer is advanced to the process of placing the ingot on the base, the installation speed is high, the charging efficiency is improved, the labor intensity of workers is reduced, and the uniformity of the gap between the periphery of the ingot and the copper crystallizer can be ensured. The device has the advantages of low cost, simple structure, small volume, convenient assembly, easy purchase and manufacture of used materials and parts, and high practicability.

The cushion blocks with different thicknesses can be placed in the clamping grooves of the clamping plates, and the requirements for adjusting different gaps are met. The outer side of the bottom plate of the clamping plate is arc-shaped, so that the bottom plate and the cast ingot can be attached conveniently. The locking structure of splint does benefit to and fastens the cushion in the draw-in groove, and locking structure is bolt and screw hole, and easy preparation and fastening are effectual.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the device for controlling the charging gap of the cast ingot of the VAR smelting furnace.

Fig. 2 is a schematic view of one side plate of the clamping plate of fig. 1.

Fig. 3 is a schematic view of the rope holder of fig. 1.

FIG. 4 is another structure of the free end of the rope in the device for controlling the charging gap of the VAR smelting furnace ingot.

Parts, positions and numbers in the drawings: the rope locking device comprises a rope 1, a clamping plate 2, a threaded hole 21, a threading hole 22, a rope container 3, a reel 31, a thread end clamping groove 32, a frame 33, a twisting handle 34, a thread wheel locking buckle 35, a hook 4 and a limiting elastic sheet 5.

Detailed Description

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

Referring to fig. 1, the device for controlling the charging gap of the VAR smelting furnace ingot comprises a rope 1, clamping plates 2, a cushion block and a rope container 3, wherein at least three clamping plates 2 are arranged on the rope 1 in a penetrating manner, for example, in fig. 1, four clamping plates 2 are arranged on the rope 1 in a penetrating manner. The rope 1 can be a steel wire rope, and in order to ensure the strength, the rope 1 is a steel wire rope with the diameter phi of 2 mm. In addition, the rope 1 can also be made of other materials meeting the strength requirement.

Each clamping plate 2 comprises a bottom plate and side plates connected to two sides of the bottom plate respectively, a clamping groove is formed between the bottom plate and the two side plates, and a cushion block is placed in the clamping groove. The outer side of the bottom plate of the clamping plate 2 is preferably arc-shaped, so that the bottom plate can be in full contact with the cast ingot conveniently. For example, as shown in fig. 1, the chucking plate 2 is formed by bending a steel plate. Specifically, the method comprises the following steps: the clamping plate 2 is made by bending a common steel plate material with the thickness of (140-160) mm multiplied by (80-100) mm multiplied by 5mm, the included angle between the two side plates and the bottom plate is 90 degrees, the size of the bottom plate is (80-100) mm multiplied by (70-80) mm multiplied by 5mm, and the size of the side plates is (80-100) mm multiplied by (35-40) mm multiplied by 5 mm. As shown in fig. 2, threading holes 22 are respectively formed at positions of the two side plates of the clamping plate 2 close to the bottom plate, and the rope 1 passes through the two threading holes 22. For example, two small holes with the diameter of phi 2.2mm are symmetrically processed at the positions, which are 3mm close to the bottom plate, of the two side plates of the clamping plate 2 to form threading holes 22, and the steel wire rope penetrates through the two threading holes 22 to be used for connecting the clamping plate 2. The clamp plate 2 is further provided with a locking structure which fastens the cushion block in the clamping groove and prevents the cushion block from sliding out of the clamping groove. For example, the locking structure is: any one side plate of the clamping plate 2 is provided with two threaded holes 21, and locking bolts pointing to the clamping grooves are arranged in the threaded holes 21. Specifically, the method comprises the following steps: two threaded holes 21 with the diameter phi of 8mm are respectively formed in the positions, away from the plate edge 1/3, of the center line of the side plate, and the threaded holes 21 are provided with locking bolts with the diameter phi of 8 mm. In addition, the clamping plate 2 and the cushion block can be locked through other modes, for example, the clamping groove is in a dovetail groove shape, and the part of the cushion block placed in the clamping groove is in a matched dovetail groove shape.

The spacer is placed and fixed in the clamping groove of the clamping plate 2 for ensuring a proper gap. The cushion block can be made of wood blocks or other wear-resistant and pressure-resistant materials, and the specific size of the cushion block is determined according to the use requirement. For example, the cushion block is a cuboid, the specific size is 100mm x (70-80) mm x (35-60) mm, the cushion block can be made into a plurality of specifications, and the corresponding cushion block is selected according to the required gap during furnace charging, placed in the clamping groove of the clamping plate 2 and fixed through the locking structure.

The rope container 3 includes a reel 31, and the rope container 3 is used for accommodating and fixing the rope 1 so that the rope 1 forms a ring shape with a fixed circumference. One end of the rope 1 is wound around the reel 31, the rope 1 is wound around the reel 31 and can be unwound and unwound, and the other end of the rope 1 is a free end. For example, the rope container 3 further includes a thread end slot 32, a pressing plate is further disposed at the thread end slot 32, and the free end of the rope 1 can be placed in the thread end slot 32 and fastened by the pressing plate, so that the rope 1 forms a loop. The reel 31 is adjusted to adjust the size of the loop formed by the rope 1. For example, as shown in fig. 3, the rope container 3 includes a housing 33, a reel 31 is provided in the housing 33, a handle 34 connected to a rotation shaft of the reel 31 is provided outside the housing 33, and the handle 34 is used to manually rotate the reel 31 to receive and fix the rope 1. A reel dead lock catch 35 is further provided between the frame 33 and the reel 31, and the reel dead lock catch 35 is used for locking the reel 31 with respect to the frame 33. The other side of the frame body 33 is provided with a thread end clamping groove 32 and a pressing plate.

Alternatively, the thread end clamping groove 32 and the pressing plate are replaced by the following structures: set up the link in the framework 33 of rope container 3, the couple 4 with the link adaptation is connected to the free end of rope 1, sets up spacing shell fragment 5 on the couple 4, and couple 4 is connected firmly with the free end of rope 1, is connected the couple on 4 and the framework 33 to avoid the roll-off through spacing shell fragment 5, realize firm the connection, and be convenient for unpack apart, as shown in fig. 4.

The second subject of the invention is: method for controlling charging gap of VAR smelting furnace ingot casting, adjusting gap between ingot casting and copper crystallizer by the 'device for controlling charging gap of VAR smelting furnace ingot casting', for example, the external dimension isThe method comprises the following steps of charging cast ingots with the weight of 3030Kg into a furnace:

and S1, placing the cast ingot on the support by using a travelling crane, and marking the installation position on the cast ingot. The mounting position, i.e. the position where the first subject is mounted on the outer side of the ingot, may be one or more turns.

And S2, winding the free end of the rope 1 around the ingot for one circle, and connecting the free end of the rope 1 with the rope container 3. For example, the free end of the rope 1 is connected with a hook and is connected with a hanging ring on the rope container 3; or the free end of the rope 1 is placed in the thread end clamping groove 32 and fastened through the pressing plate.

In operation, the reel locking buckle 35 on the rope container 3 is opened, so that the reel 31 can rotate; then, the worker pulls the free end of the rope 1 to wind the ingot for a circle; finally, the free end is connected to the rope container 3.

S3, adjusting the distance between the clamping plates 2 on the rope 1 to ensure that the clamping plates 2 are uniformly distributed on the outer side of the cast ingot, and the outer side of the bottom plate of the clamping plate 2 is in direct contact with the cast ingot. The arc shape of the outer side of the bottom plate is preferably consistent with the arc shape of the outer wall of the cast ingot so as to be fully attached. Meanwhile, the rope 1 is adjusted to the installation position, the rope 1 is tightened through the rope container 3 and clamped and fixed, the rope 1 is attached to the outer side of the ingot, and then the cushion block is placed in the clamping groove of the clamping plate 2 and fastened. For example, when four clamping plates 2 are provided on the rope 1, the intervals between the clamping plates 2 are adjusted so that the clamping plates 2 are uniformly and symmetrically arranged around the ingot on a horizontal plane of the ingot. The twisting handle 34 is rotated to tighten the steel wire rope, so that the bottom surface of the clamping plate 2 is tightly attached to the surface of the cast ingot, and then the steel wire rope is clamped and fixed, and the whole device is stably fixed at a preset position of the cast ingot. And finally, selecting four wooden cushion blocks with the size of 100mm multiplied by 70mm multiplied by 40mm according to the charging clearance, respectively installing the wooden cushion blocks in the clamping grooves of the clamping plates 2 and tightly pressing the wooden cushion blocks by two locking bolts on the side plates.

And S4, repeating the steps S2 and S3 at each mounting position until all mounting positions outside the ingot are provided with the device for controlling the charging gap of the VAR smelting furnace ingot.

S5, hoisting the cast ingot to a preset position on a base of the copper crystallizer by using a travelling crane, hoisting and sleeving the cleaned copper crystallizer outside the cast ingot by using the travelling crane, and screwing a bolt between the base and the copper crystallizer after the cast ingot is in place; the bolts need to be tightly connected, so that compactness is guaranteed, and the requirement of follow-up vacuumizing is met.

S6, hoisting the whole copper crystallizer and the base into a hearth of the VAR smelting furnace by a travelling crane, sealing the furnace body, vacuumizing to a preset value, filling Ar gas to set air pressure after the leakage detection is qualified, carrying out smelting auxiliary electrode welding, opening the furnace after cooling, checking the welding quality, and taking down the device for controlling the charging gap of the cast ingot of the VAR smelting furnace after the leakage detection is qualified.