阅读说明：本技术 钢板焊缝热处理加热装置及方法 (Steel plate weld seam heat treatment heating device and method ) 是由 高新亮 任善银 刘伟 于 2021-04-20 设计创作，主要内容包括：本发明涉及一种钢板焊缝热处理加热装置,其包括计算机、装置机体、输送轴、主线圈、第一监测装置、待处理钢板、第二监测装置、副线圈装置、第一电动机、主感应电源和副感应电源,第一电动机与输送轴固定连接,安装在装置机体上的主线圈位于待处理钢板的焊缝的正上方,并与主感应电源相连,第一监测装置安装在主线圈前方,主线圈两侧各安装有一个与副感应电源相连的副线圈装置,副线圈装置的正前方安装有第二监测装置,计算机与各装置进行数据交互,并基于此提出一种钢板焊缝热处理加热方法。本发明以温度和热应力为控制对象,在使用主线圈对焊缝进行加热的同时,使用副线圈装置对焊缝其他区域进行温度梯度调节,以改善待处理钢板焊缝热处理质量。(The invention relates to a steel plate weld seam heat treatment heating device which comprises a computer, a device body, a conveying shaft, a main coil, a first monitoring device, a steel plate to be treated, a second monitoring device, a secondary coil device, a first motor, a main induction power supply and a secondary induction power supply. The invention takes temperature and thermal stress as control objects, and uses the auxiliary coil device to perform temperature gradient adjustment on other areas of the weld joint while using the main coil device to heat the weld joint so as to improve the heat treatment quality of the weld joint of the steel plate to be treated.)

1. A steel plate welding seam heat treatment heating device is characterized by comprising a computer, a device body, a conveying shaft, a main coil, a first monitoring device, a steel plate to be treated, a second monitoring device, a secondary coil device, a first motor, a main induction power supply and a secondary induction power supply, wherein the first motor is fixedly connected with the conveying shaft, the main coil arranged on the device body is positioned right above a welding seam of the steel plate to be treated and is connected with the main induction power supply, the first monitoring device is arranged in front of the main coil, two secondary coil devices connected with the secondary induction power supply are respectively arranged on two sides of the main coil, the second monitoring device is arranged right in front of the secondary coil devices, the computer is connected with the first motor, the first monitoring device, the second monitoring device and the secondary coil devices and performs data interaction,

the secondary coil device comprises a secondary coil body, a positive electrode plate, a negative electrode plate, a positive electrode binding post, a negative electrode binding post, a light bar, a lead screw, an inductor connector and a second motor, wherein the positive electrode binding post is installed on the positive electrode plate, the negative electrode binding post is installed on the negative electrode plate, the inductor is fixedly connected onto the inductor connector, the first end of the light bar is connected with the inductor connector, the second end of the light bar is fixed onto the secondary coil body, the first end of the lead screw is connected with the inductor connector, and the second end of the lead screw is connected with the second motor to drive the inductor to move up and down.

2. The apparatus for heat-treating and heating a weld of steel plates according to claim 1, wherein the secondary coil devices each comprise n stations, each station comprising one of the second motor, four of the feed bars, one of the lead screws, one of the inductor connectors, and one of the inductors.

3. The steel plate welding seam heat treatment heating device according to claim 1, wherein a temperature measuring camera is mounted on the first monitoring device to monitor the temperature of the welding seam of the steel plate to be processed, and a temperature measuring camera and an X-ray diffraction force measuring camera are mounted on the second monitoring device to monitor the temperature and the thermal stress of the monitoring area of the steel plate to be processed.

4. The steel plate welding seam heat treatment heating device according to claim 1, wherein the gap between every two adjacent stations in the secondary coil device is a monitoring area of the steel plate to be treated, the gap between the innermost station of the secondary coil device and the main coil is a monitoring area of the steel plate to be treated, and each monitoring area corresponds to one second monitoring device.

5. The steel plate welding seam heat treatment heating device according to claim 1, wherein when the inductor is located at the uppermost working position, the inductor is separated from the branches of the positive electrode plate and the negative electrode plate and is in a non-working state; when the inductor moves downwards from the uppermost working position, the inductor is in contact with the branches of the positive electrode plate and the negative electrode plate and is in a working state.

6. A steel plate bead heat treatment heating method using the steel plate bead heat treatment heating apparatus according to any one of claims 1 to 5, characterized by comprising the steps of:

s1, setting initial values of parameters: a is 1, b is 1;

s2, collecting yield limit-temperature data of the steel plate material to be processed, and inputting the data into a computer to draw a yield limit-temperature curve of the material;

s3, numbering each station in the left and right secondary coil devices, wherein the numbering of each station in the left secondary coil device is as follows: 8L1, 8L2, 8Li, right-hand side, each station in the sub-coil device is numbered as: 8R1, 8R2, 8Ri, 8R. Numbering the left and right second monitoring devices, wherein the numbering of the left second monitoring devices is as follows: 7L₁7L2, 7Li, 7L. 7R1, 7R2, 7Ri, 7. The monitoring areas are numbered left and right, wherein the monitoring area number on the left side is as follows: l1, L2, l... er.. er. e., Li, l.er., Ln, the monitoring zone on the right side is numbered as: r1, R2, Ri, a. ·. and Rn; r represents the right side, L represents the left side;

s4, placing the steel plate to be processed on a proper position of the conveying shaft, and controlling the first motor to drive the conveying shaft to rotate, wherein the steel plate to be processed moves forwards along with the conveying shaft;

s5, adjusting the main coil to a set position, and adjusting the inductor in each station of the auxiliary coil device to the uppermost working position;

s6, switching on the main induction power supply and the auxiliary induction power supply to heat the steel plate to be processed;

s7, setting an initial value: i is 1;

s8, monitoring the temperature and the thermal stress of the monitoring area through the second monitoring device;

s9, monitoring the temperature of the heating welding seam through the first monitoring device;

s10, judging a value and a value b, and discussing by case:

s101, determining whether a is 0 and b is 0, if yes, executing step S8, and if not, executing step S102;

s102, determining whether a is 0 and b is 1, if yes, executing step S7, and if not, executing step S103;

and S103, judging whether a is 1 and b is 0, if so, turning off the main induction power supply, stopping the operation of the main coil, and then executing the step S8, otherwise, finishing heating the steel plate to be processed.

7. A steel plate weld heat treatment heating method using the steel plate weld heat treatment heating apparatus according to any one of claims 1 to 5, further characterized in that the step S8 specifically includes the steps of:

s81, the temperature T of the ith monitoring area is measured by the second monitoring device through the temperature measuring camera_iMonitoring the thermal stress sigma of the ith monitoring area by an X-diffraction force measuring camera_iMonitoring is carried out;

s82, reading the ith monitoring area T by the computer_iYield limit at temperature σ_sTiAnd calculating to judge whether the conditions are satisfiedIf yes, executing step S83, if not, rotating the second motor at the ith station to drive the inductor to move downwards to contact with the branches of the positive electrode plate and the negative electrode plate, and executing step S81 after the ith station is in a working state;

s83, setting i to i +1, determining whether i > n is satisfied, if so, setting b to 1, and then executing step S10, and if not, setting b to 0, and then executing step S10;

the step S9 specifically includes the following steps:

s91, the temperature T of the first monitoring device to the heating welding seam through the temperature measuring camera₀Monitoring is carried out;

s92, judging whether T is satisfied₀≥T_hWherein T is_hIndicating the heat treatment temperature of the bead, and if yes, setting a to 1 and then executing step S10, and if not, setting a to 0 and then executing step S10;

the step S8 and the step S9 are performed simultaneously.

Technical Field

The invention belongs to the technical field of steel plate production, and particularly relates to a steel plate weld joint heat treatment heating device and method.

Background

Welding is a common metal connection method and is widely applied to the field of steel plate production, but because the temperature is high during welding and the temperature around a welding seam is uneven, the residual stress at the welding seam is large, and small cracks and hard particles are easy to appear in the welding seam. In order to improve the reliability of the weld, researchers mostly adopt normalizing and high-temperature tempering to carry out heat treatment on the weld.

At present, in order to obtain better weld seam heat treatment quality, researchers have proposed a method for heat treatment of weld seams by using an electromagnetic induction heating mode. The method has the advantages of high heating efficiency, energy conservation, environmental protection and small distortion; but has the following disadvantages and shortcomings: the welding seam is heated only by taking the temperature of the welding seam as a single control target, the control mode is rough, and the problem of how to realize more accurate control on the heating process so as to improve the heat treatment quality of the welding seam is not solved. In summary, it is necessary and urgent to develop a scientific, reasonable and operable heating apparatus and method for heat treatment of weld joints of steel plates by using temperature and thermal stress as control targets.

Disclosure of Invention

The invention provides a steel plate welding seam heat treatment heating device and a steel plate welding seam heat treatment heating method, aiming at the situation, the device comprises a computer, a device body, a conveying shaft, a main coil, a first monitoring device, a steel plate to be treated, a second monitoring device, a secondary coil device, a first motor, a main induction power supply and a secondary induction power supply, wherein the first motor is fixedly connected with the conveying shaft, the main coil arranged on the device body is positioned right above a welding seam of the steel plate to be treated and is connected with the main induction power supply, the first monitoring device is arranged in front of the main coil, the two sides of the main coil are respectively provided with the secondary coil device connected with the secondary induction power supply, the second monitoring device is arranged right in front of the secondary coil device, and the computer and the devices carry out data interaction. The invention takes temperature and thermal stress as control objects, and uses the auxiliary coil device to perform temperature gradient adjustment on other areas of the weld joint while using the main coil device to heat the weld joint so as to improve the heat treatment quality of the weld joint of the steel plate to be treated.

The invention adopts the technical scheme that the device comprises a computer, a device body, a conveying shaft, a main coil, a first monitoring device, a steel plate to be processed, a second monitoring device, an auxiliary coil device, a first motor, a main induction power supply and an auxiliary induction power supply, wherein the first motor is fixedly connected with the conveying shaft, the main coil arranged on the device body is positioned right above a welding seam of the steel plate to be processed and is connected with the main induction power supply, the first monitoring device is arranged in front of the main coil, two sides of the main coil are respectively provided with the auxiliary coil device connected with the auxiliary induction power supply, the second monitoring device is arranged right in front of the auxiliary coil device, the computer is connected with the first motor, the first monitoring device, the second monitoring device and the auxiliary coil devices and performs data interaction,

the secondary coil device comprises a secondary coil body, a positive electrode plate, a negative electrode plate, a positive electrode binding post, a negative electrode binding post, a feed screw, an inductor connector and a second motor, wherein the positive electrode binding post is installed on the positive electrode plate, the negative electrode binding post is installed on the negative electrode plate, the inductor is fixedly connected onto the inductor connector, the first end of the feed screw is connected with the inductor connector, the second end of the feed screw is fixed onto the secondary coil body, the first end of the feed screw is connected with the inductor connector, and the second end of the feed screw is connected with the second motor to drive the inductor to move up and down.

Preferably, each of the secondary coil devices includes n stations, and each station includes one of the second motor, four of the optical bars, one of the lead screws, one of the inductor connecting bodies, and one of the inductors.

Preferably, the first monitoring device is provided with a temperature measuring camera for monitoring the temperature of the welding seam of the steel plate to be processed, and the second monitoring device is provided with a temperature measuring camera and an X-ray diffraction force measuring camera for monitoring the temperature and the thermal stress of the monitoring area of the steel plate to be processed.

Preferably, a gap between every two adjacent stations in the secondary coil device is a monitoring area of the steel plate to be processed, a gap between the innermost station of the secondary coil device and the primary coil device is a monitoring area of the steel plate to be processed, and each monitoring area corresponds to one second monitoring device respectively.

Preferably, when the inductor is located at the uppermost working position, the inductor is separated from the branches of the positive electrode plate and the negative electrode plate and is in a non-working state; when the inductor moves downwards from the uppermost working position, the inductor is in contact with the branches of the positive electrode plate and the negative electrode plate and is in a working state.

In a second aspect of the present invention, there is provided a steel plate bead heat treatment heating method using the steel plate bead heat treatment heating apparatus described above, characterized by comprising:

s1, setting initial values of parameters: a is 1, b is 1;

s2, collecting yield limit-temperature data of the steel plate material to be processed, and inputting the data into a computer to draw a yield limit-temperature curve of the material;

s3, numbering each station in the left and right secondary coil devices, wherein the numbering of each station in the left secondary coil device is as follows: 8L1, 8L2, 8Li, right-hand side, each station in the sub-coil device is numbered as: 8R1, 8R2, 8Ri, 8R. Numbering the left and right second monitoring devices, wherein the numbering of the left second monitoring devices is as follows: 7L₁7L2, 7Li, 7L. 7R1, 7R2, 7Ri, 7. The monitoring areas are numbered left and right, wherein the monitoring area number on the left side is as follows: l1, L2, l... er.. er. e., Li, l.er., Ln, the monitoring zone on the right side is numbered as: r1, R2, Ri, a. ·. and Rn; r represents the right side, L represents the left side;

s4, placing the steel plate to be processed on a proper position of the conveying shaft, and controlling the first motor to drive the conveying shaft to rotate, wherein the steel plate to be processed moves forwards along with the conveying shaft;

s5, adjusting the main coil to a set position, and adjusting the inductor in each station of the auxiliary coil device to the uppermost working position;

s6, switching on the main induction power supply and the auxiliary induction power supply to heat the steel plate to be processed;

s7, setting an initial value: i is 1;

s8, monitoring the temperature and the thermal stress of the monitoring area through the second monitoring device;

s9, monitoring the temperature of the heating welding seam through the first monitoring device;

s10, judging a value and a value b, and discussing by case:

s101, determining whether a is 0 and b is 0, if yes, executing step S8, and if not, executing step S102;

s102, determining whether a is 0 and b is 1, if yes, executing step S7, and if not, executing step S103;

and S103, judging whether a is 1 and b is 0, if so, turning off the main induction power supply, stopping the operation of the main coil, and then executing the step S8, otherwise, finishing heating the steel plate to be processed.

Further, the step S8 specifically includes the following steps:

s81, the temperature T of the ith monitoring area is measured by the second monitoring device through the temperature measuring camera_iMonitoring the thermal stress sigma of the ith monitoring area by an X-diffraction force measuring camera_iMonitoring is carried out;

s82, reading the ith monitoring area T by the computer_iYield limit at temperature σ_sTiAnd calculating to judge whether the conditions are satisfiedIf yes, executing step S83, if not, rotating the second motor at the ith station to drive the inductor to move downwards to contact with the branches of the positive electrode plate and the negative electrode plate, and executing step S81 after the ith station is in a working state;

s83, setting i to i +1, determining whether i > n is satisfied, if so, setting b to 1, and then executing step S10, and if not, setting b to 0, and then executing step S10;

the step S9 specifically includes the following steps:

s91, the temperature T of the first monitoring device to the heating welding seam through the temperature measuring camera₀Monitoring is carried out;

s92, judging whether T is satisfied₀≥T_hWherein T is_hIndicating the heat treatment temperature of the bead, and if yes, setting a to 1 and then executing step S10, and if not, setting a to 0 and then executing step S10;

the step S8 and the step S9 are performed simultaneously.

The invention has the characteristics and beneficial effects that:

1. the steel plate welding seam heat treatment heating device provided by the invention is provided with the main coil device and the auxiliary coil device, and the auxiliary coil device is used for carrying out temperature gradient regulation on other areas of the welding seam while the main coil device is used for heating the welding seam, so that the phenomenon that cracks appear in a non-heat treatment area around the welding seam due to large thermal stress caused by non-uniform temperature in the heat treatment process is effectively avoided, and the heat treatment quality of the welding seam of a steel plate to be treated is greatly improved.

2. According to the steel plate welding seam heat treatment heating method provided by the invention, the final heating temperature is not taken as a single control object, on-line thermal stress monitoring is introduced, and the thermal stress is taken as a control object, so that the real-time regulation and control of the temperature in the heating process are realized, and the temperature control in the welding seam heat treatment heating process is more accurate.

Drawings

FIG. 1 is a three-dimensional schematic view of a heat treatment heating apparatus for a weld of a steel plate according to the present invention;

FIG. 2 is a three-dimensional schematic view of a secondary coil assembly of the present invention;

FIG. 3 is a schematic top cross-sectional view of a secondary winding assembly of the present invention;

FIG. 4 is a schematic diagram of a second detecting device according to the present invention;

FIG. 5 is a schematic view of the numbers of a monitoring area of a steel plate to be processed, a station of a secondary coil device and a monitoring device;

FIG. 6 is a flowchart of a heat treatment heating method for a weld of a steel plate according to the present invention;

FIG. 7 is a yield limit-temperature curve of the J55 steel of the present invention.

In the figure:

1-a computer; 2-the apparatus body; 3-a conveying shaft; 4-a main coil; 5-a first monitoring device; 6-steel plate to be treated; 7-a second monitoring device; 7L-left second monitoring device; 7R-right second monitoring device; 8-a secondary coil arrangement; 8L-left side secondary coil device; 8R-right side secondary coil arrangement; 9-a first motor; 10-main inductive power supply; 11-secondary inductive power supply; 81-secondary coil body; 82-a positive electrode plate; 83-negative electrode plate; 84-positive electrode terminal; 85-negative electrode terminal; 86-light bar; 87-a lead screw; 88-a sensor; 89-an inductor linkage; 810-a second motor; 71-temperature measuring camera; 72-X diffraction force measuring camera.

Detailed Description

The technical contents, structural features, attained objects and effects of the present invention are explained in detail below with reference to the accompanying drawings.

The invention provides a steel plate welding seam heat treatment heating device, as shown in figure 1, which comprises a computer, a device body, a conveying shaft, a main coil, a first monitoring device, a steel plate to be treated, a second monitoring device, a secondary coil device, a first motor, a main induction power supply and a secondary induction power supply, wherein the first motor is fixedly connected with the conveying shaft, the main coil arranged on the device body is positioned right above a welding seam of the steel plate to be treated and is connected with the main induction power supply, the first monitoring device is arranged in front of the main coil, the two sides of the main coil are respectively provided with the secondary coil device connected with the secondary induction power supply, the second monitoring device is arranged right in front of the secondary coil device, and the computer is connected with the first motor, the first monitoring device, the second monitoring device and the secondary coil device and performs data interaction.

In one embodiment, the steel plate to be treated is J55 steel plate, the yield strength-temperature curve is shown in FIG. 7, and the heat treatment temperature T of the weld joint_h＝920℃。

As shown in fig. 2, the secondary coil device includes a secondary coil body, a positive electrode plate, a negative electrode plate, a positive electrode terminal, a negative electrode terminal, a light bar, a screw, an inductor connector and a second motor, the positive electrode terminal is installed on the positive electrode plate, the negative electrode terminal is installed on the negative electrode plate, the inductor is fixedly connected on the inductor connector, one end of the light bar is connected with the inductor connector, the other end is fixed on the secondary coil body, one end of the screw is connected with the inductor connector, the other end is connected with the second motor, and the inductor is driven to move up and down. The secondary coil device comprises n stations, and each station comprises a second motor, four optical levers, a lead screw, an inductor connecting body and an inductor.

As shown in fig. 2 and 3, when the inductor is located at the uppermost operating position, the inductor is separated from the branches of the positive electrode plate and the negative electrode plate and is in an inoperative state; when the inductor moves downwards from the uppermost working position, the inductor is in contact with the branches of the positive electrode plate and the negative electrode plate and is in a working state.

The first monitoring device is provided with a temperature measuring camera for monitoring the temperature of the welding seam of the steel plate to be processed, the second monitoring device is provided with a temperature measuring camera and an X-ray diffraction force measuring camera for monitoring the temperature and the thermal stress of the monitoring area of the steel plate to be processed, and the temperature measuring camera and the X-ray diffraction force measuring camera are shown in figure 4.

As shown in fig. 5, a gap between every two adjacent stations in the secondary coil device is a monitoring area of a steel plate to be processed, wherein a gap between the innermost station of the secondary coil device and the primary coil device is a monitoring area of the steel plate to be processed, and each monitoring area corresponds to a second monitoring device.

Based on the steel plate weld seam heat treatment heating device provided by the invention, a corresponding steel plate weld seam heat treatment heating method is provided, and as shown in fig. 6, the method comprises the following steps:

s1, setting initial values of parameters: a is 1 and b is 1.

And S2, collecting the yield limit-temperature data of the steel plate material to be processed, and inputting the data into a computer to draw a yield limit-temperature curve of the material, as shown in FIG. 7.

S3, as shown in fig. 5, numbering each station in the left and right sub-coil devices, where the numbering of each station in the left sub-coil device is: 8L1, 8L2, 8Li, right-hand side, each station in the sub-coil device is numbered as: 8R1, 8R2, 8Ri, 8R. Numbering the left and right second monitoring devices, wherein the numbering of the left second monitoring devices is as follows: 7L₁7L2, 7Li, 7L. 7R1, 7R2, 7Ri, 7. The monitoring areas are numbered left and right, wherein the monitoring area number on the left side is as follows: l1, L2, l... er.. er. e., Li, l.er., Ln, the monitoring zone on the right side is numbered as: r1, R2, Ri, a. ·. and Rn; r represents the right side and L represents the left side.

And S4, placing the steel plate to be processed on a proper position of the conveying shaft, controlling the first motor to drive the conveying shaft to rotate, and enabling the steel plate to be processed to move forwards along with the conveying shaft.

And S5, adjusting the main coil to a set position, and adjusting the inductor in each station of the auxiliary coil device to the uppermost working position.

And S6, switching on the main induction power supply and the auxiliary induction power supply, and heating the steel plate to be processed.

S7, setting an initial value: i is 1.

And S8, monitoring the temperature and the thermal stress of the monitoring area through the second monitoring device.

S81, the temperature T of the ith monitoring area is measured by the second monitoring device through the temperature measuring camera_iMonitoring the thermal stress sigma of the ith monitoring area by an X-diffraction force measuring camera_iAnd (5) monitoring.

S82, reading the ith monitoring area T by the computer_iYield limit at temperature σ_sTiAnd calculating to judge whether the conditions are satisfiedIf yes, go to step S83, otherwise, go to step S83And (4) the second motor at the ith station rotates to drive the inductor to move downwards to be in contact with the branches of the positive electrode plate and the negative electrode plate, so that the step (S81) is executed after the ith station is in a working state.

S83, let i be i +1, determine whether i > n is satisfied, if yes, let b be 1 and then execute step S10, and if not, let b be 0 and then execute step S10.

And S9, monitoring the temperature of the heating welding seam through the first monitoring device.

S91, the temperature T of the first monitoring device to the heating welding seam through the temperature measuring camera₀Monitoring is carried out;

s92, judging whether T is satisfied₀≥T_hWherein T is_hThe bead heat treatment temperature is indicated, and if yes, step S10 is executed after a is set to 1, and if not, step S10 is executed after a is set to 0.

Step S8 and step S9 are performed simultaneously.

S10, judging a value and a value b, and discussing by case:

s101 determines whether or not a is 0 and b is 0, and if yes, step S8 is executed, and if not, step S102 is executed.

S102 determines whether or not a is 0 and b is 1, and if yes, step S7 is executed, and if not, step S103 is executed.

And S103, judging whether a is 1 and b is 0, if so, turning off the main induction power supply, stopping the operation of the main coil, and then executing the step S8, otherwise, finishing heating the steel plate to be processed.

The steel plate welding seam heat treatment heating device provided by the invention is provided with the main coil device and the auxiliary coil device, and the auxiliary coil device is used for carrying out temperature gradient regulation on other areas of the welding seam while the main coil device is used for heating the welding seam, so that the phenomenon that cracks appear in a non-heat treatment area around the welding seam due to large thermal stress caused by non-uniform temperature in the heat treatment process is effectively avoided, and the heat treatment quality of the welding seam of a steel plate to be treated is greatly improved; according to the steel plate welding seam heat treatment heating method, the final heating temperature is not used as a single control object, on-line thermal stress monitoring is introduced, the thermal stress is used as a control object, real-time regulation and control of the temperature in the heating process are achieved, and the temperature control in the welding seam heat treatment heating process is more accurate.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention shall fall within the protection scope defined by the claims of the present invention.