CN-121980880-A - Welding deformation control method and device, electronic equipment and storage medium

CN121980880ACN 121980880 ACN121980880 ACN 121980880ACN-121980880-A

Abstract

The invention belongs to the technical field of welding, and discloses a welding deformation control method, a device, electronic equipment and a storage medium, wherein the method comprises the steps of determining key characteristics and constraint conditions of the key characteristics in an acceptance target of a target structural member; the method comprises the steps of inputting welding technological parameters and assembly constraint conditions into a pre-constructed welding deformation prediction model, obtaining deformation of key characteristics after welding through simulated welding, calibrating the welding deformation prediction model by utilizing measured data so that a prediction error of the deformation is within a preset error range to obtain calibrated deformation, solving reverse compensation quantity of the key characteristics before welding by taking the constraint conditions as targets and the calibrated deformation as input, converting the reverse compensation quantity into a manufacturing instruction, and welding based on the manufacturing instruction to obtain a target structural member.

Inventors

LI NING
HUANG XIONGYI
QI MINZHONG
WAN MINGKUN
YU SIKUI
YANG JINGYUE
WANG SHIQIANG
GONG XUEFENG
MA XIAOLU

Assignees

聚变新能(安徽)有限公司

Dates

Publication Date: 20260505
Application Date: 20260408

Claims (10)

1. A welding deformation control method, characterized by comprising: determining key features in an acceptance target for a target structural member and constraint conditions of the key features; inputting welding technological parameters and assembly constraint conditions into a pre-constructed welding deformation prediction model, and obtaining the deformation of the key features after welding through simulated welding; calibrating the welding deformation prediction model by using measured data so that the prediction error of the deformation is within a preset error range, and obtaining the calibrated deformation; The constraint condition is used as a target, the calibrated deformation is used as an input, and the reverse compensation quantity of the key feature before welding is solved; And converting the reverse compensation amount into a manufacturing instruction, and welding based on the manufacturing instruction to obtain the target structural member.
2. The welding deformation control method of claim 1, wherein the key features comprise at least one or more of a reference surface, a sealing surface, an assembly interface surface, a locating structure, and a contour boundary, and the constraints comprise at least one or more of a dimensional tolerance, a form and position tolerance, and a reference transfer relationship.
3. The welding deformation control method according to claim 1, characterized in that the method further comprises: Determining a key weld joint with the error influence on the key feature exceeding a preset weight; And establishing a heat source model aiming at the key welding seam, inputting the welding process parameters into the heat source model, and outputting a temperature field and a residual deformation field to obtain the welding deformation prediction model, wherein the heat source model comprises assembly constraint conditions.
4. The welding deformation control method according to claim 1, characterized in that the method further comprises: And calibrating the distribution parameters of the inherent strain through a representative weld test or historical data, applying the calibrated distribution parameters to the nodes of the finite element model of the target structural member, and calculating and obtaining the deformation of the key characteristics after welding by using an elastic finite element method so as to obtain the welding deformation prediction model.
5. The welding deformation control method according to claim 1, wherein calibrating the welding deformation prediction model using the measured data so that the prediction error of the deformation is within a preset error range, the obtaining the calibrated deformation includes: obtaining geometric detection data of the welding test piece before and after welding as the actual measurement data; Performing co-benchmark registration on the measured data and a prediction result of the welding deformation prediction model; and reversely adjusting model parameters of the welding deformation prediction model to enable the prediction error of the welding deformation prediction model on the key characteristics to be in a preset error range, so as to obtain the calibrated deformation.
6. The welding deformation control method according to claim 1, wherein the solving the reverse compensation amount of the key feature before welding with the calibrated deformation amount as an input targeting the constraint condition includes: establishing an objective function with the constraint condition as a target, wherein the objective function is minimized in the key feature error; and taking the calibrated deformation as input, taking a preset value range of the reverse compensation quantity of the key feature before welding as constraint, and solving the reverse compensation quantity by adopting an iterative approximation strategy.
7. The welding deformation control method according to claim 1, characterized in that the method further comprises: after welding is completed according to the manufacturing instruction, detecting key characteristics of the target structural member; Comparing the detected actual measurement value of the key feature with the constraint condition; And selectively storing the reverse compensation amount according to the comparison result.
8. A welding deformation control device, characterized by comprising: a determination module configured to determine key features in an acceptance target for a target structure and constraints of the key features; The prediction module is configured to input welding process parameters and assembly constraint conditions into a pre-constructed welding deformation prediction model, and the deformation of the key characteristics after welding is obtained through simulated welding; the calibration module is configured to calibrate the welding deformation prediction model by utilizing measured data so that the prediction error of the deformation is within a preset error range to obtain the calibrated deformation; the inverse solving module is configured to solve the inverse compensation quantity by taking the constraint condition as a target and the calibrated deformation quantity as an input; And the execution module is configured to convert the reverse compensation amount into a manufacturing instruction, and weld the target structural member based on the manufacturing instruction.
9. An electronic device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the welding deformation control method according to any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that the readable storage medium has stored thereon a program or instructions which, when executed by a processor, implement the steps of the welding deformation control method according to any one of claims 1 to 7.

Description

Welding deformation control method and device, electronic equipment and storage medium Technical Field The application belongs to the technical field of welding, and particularly relates to a welding deformation control method, a welding deformation control device, electronic equipment and a computer readable storage medium. Background Welding is a main process mode for connecting metal structural members in mechanical manufacturing, and is widely applied to the fields of aerospace, vacuum equipment, pressure vessels, rail transit and the like. For structural members with high-precision assembly requirements, such as large thin-wall structures or complex space structures with key characteristics of sealing surfaces, interface surfaces, positioning hole systems and the like, welding residual deformation is inevitably generated due to factors such as local heat input concentration, material thermophysical property change, tooling constraint and the like in the welding process. If the deformation exceeds the design tolerance, the subsequent assembly precision, the sealing performance and the product service reliability are directly affected. Therefore, how to realize effective pre-control of welding deformation and improve manufacturing efficiency and consistency on the premise of ensuring key feature precision is a technical problem to be solved in the field. Disclosure of Invention The present application is directed to solving at least one of the technical problems existing in the related art. Therefore, the application provides a welding deformation control method, a welding deformation control device, electronic equipment and a storage medium. In a first aspect, an embodiment of the present application provides a welding deformation control method, including: Determining key features in an acceptance target for the target structural member and constraint conditions of the key features; Inputting welding process parameters and assembly constraint conditions into a pre-constructed welding deformation prediction model, and obtaining the deformation of key characteristics after welding through simulated welding; Calibrating the welding deformation prediction model by using the measured data so that the prediction error of the deformation is within a preset error range, and obtaining the calibrated deformation; Taking constraint conditions as targets, taking the calibrated deformation as input, and solving the reverse compensation quantity of the key features before welding; and converting the reverse compensation amount into a manufacturing instruction, and welding based on the manufacturing instruction to obtain the target structural member. In some embodiments, the key features include at least one or more of a datum surface, a sealing surface, an assembly interface surface, a locating feature, and a contour boundary, and the constraints include at least one or more of a dimensional tolerance, a form and position tolerance, and a datum transfer relationship. In some embodiments, the method further comprises: Determining a key weld joint with error influence on the key feature exceeding preset weight; And establishing a heat source model aiming at the key welding seam, inputting welding process parameters into the heat source model, and outputting a temperature field and a residual deformation field to obtain a welding deformation prediction model, wherein the heat source model comprises assembly constraint conditions. In some embodiments, the method further comprises: And calibrating the distribution parameters of the inherent strain through a representative weld test or historical data, applying the calibrated distribution parameters to nodes of a finite element model of the target structural member, and calculating and obtaining the deformation of the key characteristics after welding by using an elastic finite element method so as to obtain a welding deformation prediction model. In some embodiments, calibrating the welding deformation prediction model using the measured data to make the prediction error of the deformation amount within the preset error range, to obtain the calibrated deformation amount includes: obtaining geometric detection data of a test welding piece before and after welding as actual measurement data; registering the measured data with a prediction result of the welding deformation prediction model in a same reference manner; and reversely adjusting model parameters of the welding deformation prediction model to ensure that the prediction error of the welding deformation prediction model on the key characteristics is in a preset error range, thereby obtaining the calibrated deformation. In some embodiments, targeting constraints, with the calibrated deformation as input, solving for the reverse compensation of the pre-weld key feature comprises: establishing an objective function with minimum key characteristic errors by taking constraint conditions as targets; and taking the calibr