CN-122012894-A - Automatic box-type furnace annealing system and use method

CN122012894ACN 122012894 ACN122012894 ACN 122012894ACN-122012894-A

Abstract

The invention provides an automatic box-type furnace annealing system and a use method thereof, wherein the automatic box-type furnace annealing system realizes the combined operation of a box-type annealing furnace, and comprises a plurality of box-type furnaces, mechanical arms, a buffer table and an AGV station, wherein the box-type furnaces are provided with a plurality of trays in a matched manner, the mechanical arms are provided with clamps and a visual recognition system, the clamps are used for clamping and carrying the trays, the visual recognition system is used for judging square ring samples in the trays and confirming the number of loading layers of the trays, the AGV station comprises a plurality of AGV trolleys, is in butt joint with a full-automatic square ring magnetic detector, can continuously enter the furnace, anneal and discharge the furnace in the production process, can independently operate and can also be in butt joint with an automatic detection line with the AGV system, and the full-flow automation is realized.

Inventors

ZHANG JUNPENG
HUANG SHUANG
NIE SHUN
YANG GUANG
GAO CHENG
TANG YANG
LIU HONGSHAN
ZHU PENGBO

Assignees

武汉钢铁有限公司

Dates

Publication Date: 20260512
Application Date: 20260312

Claims (10)

1. The utility model provides an automatic change box stove annealing system, its characterized in that, including many box stoves, arm, buffer memory platform and AGV website, the supporting installation several tray of box stove, the arm on be equipped with anchor clamps and visual identification system, anchor clamps be used for the centre gripping transport the tray, visual identification system carry out the interior square ring sample of tray and judge and the confirmation of tray loading layer number, the AGV website include a plurality of AGV dollies, with full-automatic square ring magnetic meter butt joint configuration.
2. An automated oven annealing system according to claim 1, further comprising a stationary overturning table, wherein said square ring sample is arranged on said stationary overturning table for overturning and adjusting said square ring sample horizontally and vertically.
3. The automatic box-type furnace annealing system according to claim 1 or 2, wherein the clamp comprises a base, a compression cylinder and clamping jaws, the compression cylinder is fixed on the base, the end of a telescopic rod of the compression cylinder is connected with the clamping jaws, and the clamp is symmetrically arranged on the mechanical arm through a rotary table to clamp and grasp the tray and square ring samples.
4. The automatic box-type furnace annealing system according to claim 3, further comprising a protective atmosphere recycling device, and specifically comprising a protective atmosphere buffer transfer tank, wherein the protective atmosphere buffer transfer tank is respectively communicated with gas reflux ports of a plurality of box-type furnaces through a plurality of reflux pipes, an exhaust port of the box-type furnaces is communicated with an exhaust pipe, an air inlet of the box-type furnaces is communicated with an air inlet pipe, the exhaust pipe and the reflux pipes are respectively provided with an air inlet valve, an exhaust valve and a reflux valve, and the air inlet pipe is communicated with an external protective air source.
5. The automated oven annealing system according to claim 4, wherein the visual recognition system comprises a color area camera and an image recognition system, and the position of the sample in the tray is determined by visual deep learning technology.
6. The automatic box-type furnace annealing system according to claim 5, wherein the clamp is integrated with a temperature measuring camera, and the temperature of the naturally cooled square ring sample after discharging is measured.
7. An automated box furnace annealing system according to claim 4 or 6, wherein said protective atmosphere buffer transfer pot encloses insulation wool.
8. The automated oven annealing system of claim 5, wherein the visual recognition system further comprises an LED light supplement lamp mounted on the robotic arm.
9. The method for testing an annealing system of an automatic box-type furnace according to claim 6 or 8, wherein an oxygen-containing detection device is arranged in the protective atmosphere buffer transfer tank for detecting the oxygen content of the protective atmosphere.
10. Use of an automated box furnace annealing system according to claim 9, comprising the steps of: step S 1 , charging a box furnace: Step S 11 , an AGV system or personnel places a square ring sample loading tray to an AGV station or a loading position, and after the system judges whether a box-type furnace in a standby state can be used, the box-type furnace enters a sample loading state; Step S 12 , a visual recognition system confirms the number and the positions of sample groups of a feeding prescription ring, a box-type furnace is opened, a plurality of trays are clamped by a mechanical arm and sequentially placed on a cache table according to the sequence, then the feeding prescription ring is grabbed, the square ring is vertically placed in the tray positioned in a loading position, the loading is repeated until the samples are fully filled in the tray, the full tray is placed in the box-type furnace by the mechanical arm, and the number of layers of the existing tray in the furnace is confirmed by the visual recognition system; S 13 , carrying the tray on the cache table to a loading position through a mechanical arm, repeatedly loading until the tray is fully loaded, and putting the tray into a box-type furnace through the mechanical arm; s 14 , repeating the steps until a plurality of layers of trays are stacked in the box-type furnace, and starting heating and annealing after the furnace door is closed; step S 2 , discharging the box furnace: S 21 , the temperature after annealing is reduced to a set temperature, the box-type furnace enters a discharging state, the furnace door is opened, and the furnace door conveys the bracket and the multi-layer tray out of the furnace body; Step S 22 , judging the number of layers of the existing trays in the furnace through a visual identification system, confirming whether empty trays exist according to furnace loading information, grabbing the empty trays through a mechanical arm to convey the empty trays to a cache table if the empty trays exist, and stacking and placing the empty trays one by one; Step S 23 , confirming the number of layers of the existing trays in the furnace through a visual identification system, grabbing the trays loaded with the samples to an AGV station through a mechanical arm, and carrying the trays containing square ring samples to be detected on the station to a square ring detection system by an AGV trolley for detection; step S 24 , repeating the tapping step until all trays containing the samples are transported away for detection; step S 3 , empty tray reloading: Step S 31 , opening a furnace door of the box furnace in a standby state, grabbing an empty tray on a cache table and an empty tray returned by an AGV station through a mechanical arm, stacking the empty trays on a box-type carrying bracket, and repeatedly carrying and counting until the empty trays are not arranged on the cache table and the AGV station; Step S 32 , when the number of layers of the stacked trays in the box-type furnace reaches the upper limit, the furnace enters a standby full tray state; Step S 4 , recycling nitrogen protective atmosphere of the box-type furnace: Step S 41 , when one or more box furnaces are in a cooling stage in the annealing process, increasing the flow of the protective atmosphere of nitrogen to carry out auxiliary cooling by increasing the opening of a corresponding air inlet valve, closing a corresponding air outlet valve, opening a reflux valve, and refluxing the protective atmosphere into a protective atmosphere buffer transfer tank; Step S 42 , when a plurality of box-type furnaces are in a heat preservation or heating stage, opening an air inlet valve and a reflux valve by adopting a single box-type furnace, closing an air outlet valve, opening the reflux valve and the air outlet valve by other box-type furnaces, closing the air inlet valve, and adopting a mode that the air inlet of the single box-type furnace is communicated with other single box-type furnaces to form positive pressure of protective atmosphere in the single box-type furnaces, thereby realizing primary protective atmosphere and heat energy recovery; Step S 43 , when a plurality of single box-type furnaces are in a cooling stage, opening an independent air inlet valve and an independent air outlet valve of each single box-type furnace, and closing all reflux valves to avoid influence of overheat recovery protective atmosphere on cooling effect; and step S 44 , when the oxygen-containing detection device detects that the oxygen content of the protective atmosphere recovered from the protective atmosphere buffer transfer tank exceeds the standard, opening the air inlet valve and the air outlet valve of each box-type furnace, and closing all reflux valves to avoid the mutual pollution of the circulating protective atmosphere.

Description

Automatic box-type furnace annealing system and use method Technical Field The invention belongs to the technical field of stress relief annealing of electrical steel square ring samples, and particularly relates to an automatic box furnace annealing system and a use method thereof. Background The magnetic performance detection of the square ring of the silicon steel is carried out according to the physical performance detection of national standard GB/3655, and a sample is generally sampled at the full plate width of the steel plate. The physical or laser processing mode is adopted, the size is 30mm multiplied by 320mm rectangle, more than 16 pieces are usually combined, and the weight is between 0.5kg and 1 kg. According to the standard requirements of silicon steel products, stress relief annealing is needed before the magnetic properties of all oriented silicon steel and part of non-oriented silicon steel square rings are detected, and the aim of relieving the processing stress of the sample is achieved by annealing in a nitrogen protective atmosphere at 750-800 ℃ for 2 hours. In the current stage, stress relief annealing is generally performed in a heat treatment furnace annealing mode, namely a bell-type furnace, a box-type furnace or a continuous annealing furnace, in each large steel mill in China. The mode adopts a manual charging annealing mode, and the mode has the following problems: 1. Under the condition of mass production, the close thousand groups of silicon steel square ring samples are manually stacked for charging every day, and are manually removed and sorted after annealing is finished, so that a large amount of manpower is consumed, and the efficiency is low. 2. The mode of manual charging often needs to pile thousands of groups of sample pieces into, and the area of furnace body can be got into to the part, often piles up the height, has the sample piece to scatter the risk to need to cover the weight in business turn over stove and the annealing process, has great quality and security risk. 3. Under the background of establishing a silicon steel automation laboratory at the initial scale in China, the manual furnace loading mode does not have the condition of butting with a full-automatic detection line. 4. When a plurality of box-type furnaces are simultaneously opened and combined for use, each box-type furnace adopts an independent protective atmosphere air inlet and exhaust device, and the actually discharged protective atmosphere nitrogen has extremely high purity and is in a high-temperature state, but cannot be recovered and directly discharged into the atmosphere. 5. The silicon steel square ring sample is cooled to 250-300 ℃ along with the furnace after annealing, then is discharged from the furnace to be cooled to room temperature under the atmospheric condition, and then can be detected, wherein the temperature reduction process is not fixed along with different time of the environmental temperature and humidity conditions, if the sample is naturally cooled incompletely, the magnetic performance detection result of the Epstein square ring can be obviously influenced by the detection of the excessive temperature (more than 20 ℃ than the typical room temperature), and therefore, the detection needs to be confirmed by manual continuous inspection when the requirement on the inspection period is tight. Under the condition of large-scale improvement of production efficiency, the development of a system with full-automatic square ring annealing capability is very important for silicon steel inspection laboratory. Disclosure of Invention The invention aims to solve the problems, and provides an automatic box furnace annealing system and a using method thereof, which can continuously feed, anneal and discharge in the production process, can independently operate and can also be in butt joint with an automatic detection line of an AGV system, so as to realize full-flow automation. Embodiments of the present application are implemented as follows: The embodiment of the application provides an automatic box furnace annealing system which is characterized by comprising a plurality of box furnaces, mechanical arms, a buffer table and an AGV station, wherein the box furnaces are provided with a plurality of trays in a matched mode, the mechanical arms are provided with clamps and a visual recognition system, the clamps are used for clamping and carrying the trays, the visual recognition system is used for judging square ring samples in the trays and confirming the number of loading layers of the trays, and the AGV station comprises a plurality of AGV trolleys and is in butt joint configuration with a full-automatic square ring magnetic detector. In some alternative embodiments, a fixed overturning platform is further provided, and the square ring sample is subjected to overturning adjustment of flat and vertical arrangement on the fixed overturning platform. In some optional embodiments