阅读说明：本技术 一种用于精拉钢材生产用球化退火处理工艺及其设备 (Spheroidizing annealing treatment process and equipment for producing finish-drawn steel ) 是由 王奇飞 闫海生 陆红波 吴波 傅岳超 孔祥升 卿建华 于 2021-06-18 设计创作，主要内容包括：本发明公开一种用于精拉钢材生产用球化退火处理工艺及其设备,涉及钢材热处理技术技术领域,包括炉体支座,位于炉体支座内腔两端设有旋转支座,炉体支座上开设有进料口,炉体支座底端设有出料口；进料口内设有送料机构,炉体支座内腔与进料口相对端侧壁上设有加热支座和冷却腔座,加热支座位于冷却腔座的上方,加热支座内设有电热辐射管,靠近电热辐射管端设有开放式加热腔与加热支座构成封闭空间,冷却腔座连接有冷却机构；还包括有套管座,套管座被配置用安装在工件两端,套管座可收纳在旋转支座的弧形槽内与弧形槽滑动连接,实现工件的自动上料、加热、冷却、卸料的功能,无需人工操作,降低了安全风险,提高了热处理效率。(The invention discloses a spheroidizing annealing treatment process and equipment for producing finish-drawn steel, which relate to the technical field of steel heat treatment and comprise a furnace body support, wherein rotary supports are arranged at two ends of an inner cavity of the furnace body support, a feeding hole is formed in the furnace body support, and a discharging hole is formed in the bottom end of the furnace body support; a feeding mechanism is arranged in the feeding hole, a heating support and a cooling cavity seat are arranged on the side wall of the end, opposite to the feeding hole, of the inner cavity of the furnace body support, the heating support is positioned above the cooling cavity seat, an electric heating radiation tube is arranged in the heating support, an open type heating cavity is arranged close to the end of the electric heating radiation tube, a closed space is formed by the heating support and the heating cavity, and the cooling cavity seat is connected with a cooling mechanism; still including the casing seat, the casing seat is configured with installing at the work piece both ends, and the casing seat can be accomodate in the arc wall of rotatory support with arc wall sliding connection, realizes the function of the automatic feeding of work piece, heating, cooling, unloading, need not manual operation, has reduced safe risk, has improved heat treatment efficiency.)

1. A spheroidizing annealing treatment device for producing finish-drawn steel comprises a furnace body support (1), and is characterized in that rotary supports (4) are arranged at two ends of an inner cavity of the furnace body support (1), a gap is formed between the axial direction of each rotary support (4) and the inner wall of the furnace body support (1), a feeding hole (102) is formed in the furnace body support (1) in the anticlockwise rotating direction of the rotary supports (4), and a discharging hole (103) is formed in the bottom end of the furnace body support (1);

a feeding mechanism is arranged in the feeding hole (102), a heating support (5) and a cooling cavity seat (8) are arranged on the side wall of the end, opposite to the feeding hole (102), of the inner cavity of the furnace body support (1), the heating support (5) is positioned above the cooling cavity seat (8), an electric heating radiant tube (51) is arranged in the heating support (5), an open heating cavity is arranged at the end, close to the electric heating radiant tube (51), of the heating support (5) to form a closed space with the heating support (5), and the cooling cavity seat (8) is connected with a cooling mechanism;

the workpiece machining device is characterized by further comprising sleeve seats (6), the sleeve seats (6) are configured to be installed at two ends of a workpiece, four groups of arc-shaped grooves (401) are formed in the rotary support (4) in a circumferential array mode, the sleeve seats (6) can be contained in the arc-shaped grooves (401) and are in sliding connection with the arc-shaped grooves (401), and the arc-shaped grooves (401) areAnd (4) molding.

2. The spheroidizing annealing treatment equipment for the production of finish-drawn steel products according to claim 1, wherein the feeding mechanism comprises four-blade rollers (3), the four-blade rollers (3) are accommodated in the middle of the feeding port (102), two ends of each four-blade roller (3) are rotatably connected with the furnace body support (1), a feeding dripping plate (2) is further arranged at the feeding port (102), the feeding dripping plate (2) comprises a horizontal plate and an inclined plate, the bottom end of the inclined plate is connected with the bottom end of the feeding port (102), one end of a rotating shaft of each four-blade roller (3) is provided with a gear set (31), and the gear set (31) is connected with the rotating shaft of the rotating support (4) through a conveying belt (32).

3. The spheroidization annealing treatment equipment for the production of fine drawing steel according to claim 1, characterized in that, open heating chamber includes cavity support (7) and cavity support (71) down, has seted up the arc chamber in cavity support (7) and cavity support (71) down, cavity support (7) and cavity support (71) both ends all are articulated with heating support (5) on going up cavity support (7), cavity support (7) and cavity support (71) both ends all are equipped with slewing mechanism down, slewing mechanism is configured and is used for driving cavity support (7) and cavity support (71) closed down, be equipped with canceling release mechanical system on cavity support (7) or cavity support (71) and be used for maintaining cavity support (7) and cavity support (71) and open.

4. The spheroidizing annealing treatment equipment for the production of finish-drawn steel products according to claim 3, wherein the inner walls of the upper cavity support (7) and the lower cavity support (71) are coated with heat radiation materials, the side walls of the two ends of the upper cavity support (7) and the lower cavity support (71) are provided with sealing rings (76), and the sealing rings (76) are made of high temperature resistant heat insulation materials.

5. The spheroidizing annealing treatment apparatus for producing the finish-drawn steel product according to claim 4, characterized in that the rotating mechanism comprises a second gear (73), a connecting rod (74) and a third gear (75), the second gear (73) is fixedly connected with a hinged shaft of the lower cavity support (71), the third gear (75) is fixedly connected with a hinged shaft of the upper cavity support (7), two ends of the connecting rod (74) are respectively eccentrically hinged with the end surfaces of the second gear (73) and the third gear (75), an arc-shaped rack (41) is arranged on the end face of the rotary support (4) close to the side of the heating support (5), when the closed end of the arc-shaped groove (401) is close to the heating support (5), the arc-shaped rack (41) can be meshed with the second gear (73) to drive the second gear (73) to rotate counterclockwise by (90) degrees, so that the upper cavity support (7) and the lower cavity support (71) are closed.

6. The spheroidizing annealing treatment equipment for the production of finish-drawn steel according to claim 5, wherein the sleeve seat (6) is positioned at the end of the outer circumferential surface of the intermittent part of the rotating support (4) and the furnace body support (1) and is provided with a toothed groove (61), a first gear (13) is further arranged in the gap between the rotating support (4) and the furnace body support (1), the first gear (13) is rotatably connected with the furnace body support (1), and when the second gear (73) and the lower furnace body support (71) are closed, the toothed groove (61) is in meshing contact with the first gear (13).

7. The spheroidizing annealing treatment equipment for the production of finish-drawn steel according to claim 6, wherein the rotary support (4) and the furnace body support (1) are provided with a discharging mechanism at the inner and lower ends of the gap, the outer circumferential surface of the end of the sleeve seat (6) far away from the workpiece is provided with an annular groove (62) which can be matched with the discharging mechanism to clamp, and the discharging mechanism is configured to clamp the sleeve seat (6) to move axially along the sleeve seat (6) to separate from the workpiece.

8. The spheroidizing annealing treatment equipment for the production of finish-drawn steel products according to claim 7, wherein the discharging structure comprises a discharging support (9), the bottom end of the discharging support (9) is arc-shaped, the radius of the arc is consistent with the inner diameter of the annular groove (62), an arc-shaped clamping block (91) is arranged on the side of the discharging support (9) far away from the feeding hole (102), the bottom end of the arc-shaped clamping block (91) is arc-shaped and matched with the arc-shaped bottom end of the discharging support (9) to form a semicircular clamping block, the arc-shaped clamping block (91) is rotatably connected with the discharging support (9), and the arc-shaped clamping block (91) provided with a torsion spring between the arc-shaped clamping block (91) and the discharging support (9) is kept in an open state with the discharging support (9);

the end, far away from the rotating support (4), of the discharging support (9) is provided with an air cylinder (92), the discharging support (9) is fixedly connected with a piston rod of the air cylinder (92), a base of the air cylinder (92) is fixedly connected with the furnace body support (1), the air cylinder (92) is accommodated in a waist-shaped hole (104) formed in the feeding trickling plate (2), and the waist-shaped hole (104) can allow the sleeve seat (6) to pass through.

9. The spheroidizing annealing treatment equipment for the production of finish-drawn steel according to claim 8, characterized in that the rotating support (4) is close to four groups of arc plates (42) in the circumferential array at the side of the furnace body support (1), the arc plates (42) are positioned at the closed end of the arc groove (401) close to the feed inlet (102), and when the rotating support (4) moves to the position of the cooling cavity seat (8), the arc plates (42) drive the arc fixture block (91) to move towards the side of the discharge support (9) and be clamped into the sleeve seat (2) of the sleeve seat (6).

10. The spheroidizing annealing treatment process for producing finish-drawn steel is characterized in that clamping tools are sleeved at two ends of a workpiece, the two ends of each clamping tool are clamped on a rotary support, the rotary support is driven to rotate to drive the workpiece to rotate and sequentially pass through a heating area to be heated, heat is preserved for a period of time after the workpiece is heated for a period of time, the rotary support is continuously driven to rotate to enable the workpiece to rotate to a cooling area, the workpiece is cooled for a period of time through a cooling mechanism, the rotary support is driven to rotate to throw the workpiece out from a discharge port end, and the workpiece is loaded into a container to be stored.

Technical Field

The invention belongs to the technical field of steel heat treatment, and particularly relates to a spheroidizing annealing treatment process and equipment for producing finish-drawn steel.

Background

The finish drawing refers to a seamless steel pipe, the main production flow of the seamless steel pipe comprises pipe blank and blank heating, pipe blank perforation, steel pipe extension, steel pipe rolling, steel pipe sizing and reducing, steel pipe cooling and finishing or heating perforation, hot rolling, acid washing, cold drawing, carbon burning and cutting head spraying and label packaging finished products of a steel blank, a plurality of rows of heat treatment needs to be carried out on the blank in the processing process to improve the product performance of steel, spheroidizing annealing is an essential step in the heat treatment, and the spheroidizing annealing improves the processing performance of the blank by changing the structure of carbide of the blank.

The spheroidizing annealing process comprises three steps of ordinary spheroidizing annealing, isothermal spheroidizing annealing and periodic spheroidizing annealing, the structure after isothermal spheroidizing annealing is uniform and easy to control, and the production period is short, so that the spheroidizing annealing process is most common in blank processing, and the isothermal spheroidizing annealing process comprises the steps of heating eutectoid steel or hypereutectoid steel to Ac1+ (20-30 ℃), keeping the temperature for a proper time, cooling to a temperature slightly lower than Ar1, keeping the temperature isothermally for a certain time, and cooling in a furnace or air cooling. The existing annealing treatment equipment completely puts a workpiece into a heating furnace during annealing, the position of the heated workpiece needs to be adjusted manually, the workpiece is cooled and then unloaded, the manual work is involved more, the temperature is higher during heat treatment, the working environment is poorer, the physical health of workers is influenced, and meanwhile, the safety risk exists, so that the spheroidizing annealing treatment process and the equipment for producing the fine-drawn steel are provided.

Disclosure of Invention

In view of the defects of the prior art, the invention aims to provide a spheroidizing annealing treatment process for producing a finish-drawn steel and equipment thereof, so as to solve the problems in the background technology.

The purpose of the invention can be realized by the following technical scheme: a spheroidizing annealing treatment device for producing finish-drawn steel comprises a furnace body support, wherein rotary supports are arranged at two ends of an inner cavity of the furnace body support, a gap is formed between the axial direction of each rotary support and the inner wall of the furnace body support, a feeding hole is formed in the furnace body support at the side of the anticlockwise rotating direction of each rotary support, and a discharging hole is formed in the bottom end of the furnace body support;

a feeding mechanism is arranged in the feeding hole, a heating support and a cooling cavity seat are arranged on the side wall of the end, opposite to the feeding hole, of the inner cavity of the furnace body support, the heating support is positioned above the cooling cavity seat, an electric heating radiation tube is arranged in the heating support, an open type heating cavity is arranged close to the end of the electric heating radiation tube, a closed space is formed by the heating support and the heating cavity, and the cooling cavity seat is connected with a cooling mechanism;

the device is characterized by further comprising sleeve seats, wherein the sleeve seats are configured to be installed at two ends of a workpiece, four groups of arc-shaped grooves are formed in the circumferential array on the rotary support, the sleeve seats can be contained in the arc-shaped grooves and are in sliding connection with the arc-shaped grooves, and the arc-shaped grooves areAnd (4) molding.

As a further scheme of the invention, the feeding mechanism comprises four-blade rollers, the four-blade rollers are accommodated in the middle of the feeding port, two ends of each four-blade roller are rotatably connected with the furnace body support, a feeding flow plate is further arranged at the feeding port, the feeding flow plate comprises a horizontal plate and an inclined plate, the bottom end of the inclined plate is connected with the bottom end of the feeding port, one end of a rotating shaft of each four-blade roller is provided with a gear set, and the gear set is connected with the rotating shaft of the rotating support through a conveying belt.

As a further scheme of the invention, the open type heating cavity comprises an upper cavity support and a lower cavity support, arc-shaped cavities are formed in the upper cavity support and the lower cavity support, two ends of the upper cavity support and two ends of the lower cavity support are both hinged to the heating supports, two ends of the upper cavity support and two ends of the lower cavity support are both provided with rotating mechanisms, the rotating mechanisms are configured to drive the upper cavity support and the lower cavity support to be closed, and the upper cavity support or the lower cavity support is provided with a resetting mechanism to maintain the upper cavity support and the lower cavity support to be opened.

According to a further scheme of the invention, the inner walls of the upper cavity support and the lower cavity support are coated with heat radiation materials, the side walls of two ends of the upper cavity support and the lower cavity support are provided with sealing rings, and the sealing rings are made of high-temperature-resistant heat insulation materials.

As a further scheme of the invention, the rotating mechanism comprises a second gear, a connecting rod and a third gear, the second gear is fixedly connected with a hinged shaft of the lower cavity support, the third gear is fixedly connected with a hinged shaft of the upper cavity support, two ends of the connecting rod are eccentrically hinged with end faces of the second gear and the third gear respectively, an arc-shaped rack is arranged on the end face of the rotating support close to the heating support, and when the closed end of the arc-shaped groove is close to the heating support, the arc-shaped rack can be meshed with the second gear to drive the second gear to rotate anticlockwise so as to close the upper cavity support and the lower cavity support.

As a further scheme of the invention, a tooth groove is formed in the end, located on the outer circumferential surface of the intermittent part of the rotary support and the furnace body support, of the sleeve seat, a first gear is further arranged in a gap between the rotary support and the furnace body support, the first gear is rotatably connected with the furnace body support, and when the second gear and the lower cavity support are closed, the tooth groove is in meshing contact with the first gear.

As a further scheme of the invention, the discharging mechanism is arranged at the lower end in the gap between the rotary support and the furnace body support, an annular groove which can be clamped by the discharging mechanism is arranged on the outer circumferential surface of the end, far away from the workpiece, of the sleeve seat, and the discharging mechanism is configured to clamp the sleeve seat to move along the axial direction of the sleeve seat to separate from the workpiece.

As a further scheme of the invention, the discharging structure comprises a discharging support, the bottom end of the discharging support is arc-shaped, the arc-shaped radius is consistent with the inner diameter of the annular groove, an arc-shaped fixture block is arranged on the side of the discharging support, which is far away from the feeding port, the bottom end of the arc-shaped fixture block is arc-shaped and matched with the arc-shaped bottom end of the discharging support to form a semicircular fixture block, the arc-shaped fixture block is rotatably connected with the discharging support, and the arc-shaped fixture block, which is provided with a torsion spring between the arc-shaped fixture block and the discharging support, is kept in an open state with the discharging support;

the discharging support is provided with an air cylinder at the end far away from the rotating support, the discharging support is fixedly connected with an air cylinder piston rod, an air cylinder base is fixedly connected with the furnace body support, the air cylinder is accommodated in a waist-shaped hole formed in the feeding trickling plate, and the waist-shaped hole can accommodate the sleeve seat to pass through.

As a further scheme of the invention, four groups of arc-shaped plates are circumferentially arrayed on the side of the rotary support close to the support of the furnace body, the arc-shaped plates are positioned on the side of the closed end of the arc-shaped groove close to the feeding port, and when the rotary support moves to the position of the cooling cavity seat, the arc-shaped plates drive the arc-shaped clamping block to move towards the side of the discharging support and be clamped into the sleeve seat.

A spheroidizing annealing treatment process for producing finish-drawn steel is characterized in that clamping tools are sleeved at two ends of a workpiece, the two ends of each clamping tool are clamped on a rotary support, the rotary support is driven to rotate by driving the rotary support, the workpiece is sequentially heated through a heating area, heat preservation is carried out for one end time after the workpiece is heated for a period of time, the rotary support is continuously driven to rotate, so that the workpiece is rotated to a cooling area, the workpiece is cooled for a period of time through a cooling mechanism, the rotary support is driven to rotate, the workpiece is thrown out from a discharge port end, and the workpiece is loaded into a container and stored in a warehouse.

The invention has the beneficial effects that: realize the function of automatic feeding, heating, cooling, the unloading of work piece, need not manual operation, reduced the safety risk, the work piece rotates rapidly in the heating intracavity, and has improved the efficiency of heating through the heat radiation in the heating intracavity, has shortened the time of heating, makes simultaneously to be heated evenly, has guaranteed the quality of annealing.