Welding Deformation Controlling for the Truck Rack Girder

2012 ◽  
Vol 217-219 ◽  
pp. 2125-2132
Author(s):  
Li Qin Li ◽  
Li Bin Zhao ◽  
Xi Min Liu ◽  
Da Yu Wang ◽  
Xing Wang Wen
Keyword(s):  
Process Control ◽  
Welding Process ◽  
Fixture Design ◽  
Welding Deformation ◽  
Control Technology ◽  
Deformation Control ◽  
Running Safety

This paper aims at the research on deformation control technology in truck rack girder. Welded deformation is minished through special welding fixture design and welding process control, thus to improve the size precision of the truck rack girder and ensure the running safety of the vehicle.

Belt Machine Welding Deformation Control and Correction Method

2013 ◽  
Vol 310 ◽  
pp. 269-272
Author(s):  
Li Juan Wen ◽  
Wei Zhou
Keyword(s):  
Deformation Process ◽  
Welding Process ◽  
Correction Method ◽  
Welding Deformation ◽  
Deformation Control ◽  
Welding Steel

This paper regards research as the welding steel welding deformation control and correction of the thesis, mainly focusing on the welding process, the tracking and analysis of welded I-steel welding process and deformation process, make appropriate preventive and corrective methods, try to prevent deformation, deformation control.

scholarly journals Development of Welding Deformation Control Technology for ITER TF Coil Structure

2020 ◽  
Vol 55 (6) ◽  
pp. 385-392
Author(s):  
Masahide IGUCHI ◽  
Takeru SAKURAI ◽  
Katsutoshi TAKANO ◽  
Tatsuya OHKAWA ◽  
Nobuhiko TANAKA ◽  
...  
Keyword(s):  
Welding Deformation ◽  
Control Technology ◽  
Deformation Control ◽  
Coil Structure

Increasing revenue and reducing cost through the use of advanced process control technology in the sugar industry

2016 ◽  
pp. 620-624
Author(s):  
Scott Kahre
Keyword(s):  
Process Control ◽  
Sugar Industry ◽  
Operating Cost ◽  
Control Technology ◽  
Advanced Process Control ◽  
Output Controller ◽  
Complex Processes ◽  
Unit Operations ◽  
Sugar Unit ◽  
Optimum Cost

Advanced process control technology can provide sugar processors the ability to realize major revenue enhancements and/or operating cost reductions with low initial investment. One technology in particular, model predictive control (MPC), holds the potential to increase production, reduce energy costs, and reduce quality variability in a wide variety of major sugar unit operations. These include centrifugal stations, pulp dryers, extractors, diffusers, mills, evaporating crystallizers, juice purification, and more. Simple payback periods as low as two months are projected. As a PC-based add-on to existing distributed control systems (DCS) or programmable logic controller (PLC) systems, MPC acts as a multi-input, multi-output controller, utilizing predictive process response models and optimization functions to control complex processes to their optimum cost and quality constraints.

Study on Welding Deformation and Residual Stress of H-Section Beam Based on Finite Element Method

2017 ◽  
Vol 753 ◽  
pp. 305-309 ◽  
Author(s):  
Xu Lu
Keyword(s):  
Mechanical Properties ◽  
Residual Stress ◽  
Finite Element ◽  
Source Parameters ◽  
Welding Process ◽  
Steel Structure ◽  
Bottom Plate ◽  
Welding Deformation ◽  
Element Simulation ◽  
Main Components

The welding H-section beam has good mechanical properties with its superior structure. So they become the main components of steel structure and have been widely used. In this paper, the welded H-section beam is used as the research object. The finite element simulation model is established. The heat source parameters are determined. The deformation of the steel due to the welding process is studied. The results show that the bottom plate and the bottom plate inward bending is about 2.32mm cause by welding process. The residual stress can reach 400MPa.

scholarly journals Predicting Welding Distortion in a Panel Structure with Longitudinal Stiffeners Using Inherent Deformations Obtained by Inverse Analysis Method

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Wei Liang ◽  
Hidekazu Murakawa
Keyword(s):  
Inverse Analysis ◽  
Welding Process ◽  
Strain Theory ◽  
The Other ◽  
Welding Distortion ◽  
Welding Deformation ◽  
Welded Structures ◽  
Longitudinal Stiffeners ◽  
Manufacturing Accuracy ◽  
Inherent Strain

Welding-induced deformation not only negatively affects dimension accuracy but also degrades the performance of product. If welding deformation can be accurately predicted beforehand, the predictions will be helpful for finding effective methods to improve manufacturing accuracy. Till now, there are two kinds of finite element method (FEM) which can be used to simulate welding deformation. One is the thermal elastic plastic FEM and the other is elastic FEM based on inherent strain theory. The former only can be used to calculate welding deformation for small or medium scale welded structures due to the limitation of computing speed. On the other hand, the latter is an effective method to estimate the total welding distortion for large and complex welded structures even though it neglects the detailed welding process. When the elastic FEM is used to calculate the welding-induced deformation for a large structure, the inherent deformations in each typical joint should be obtained beforehand. In this paper, a new method based on inverse analysis was proposed to obtain the inherent deformations for weld joints. Through introducing the inherent deformations obtained by the proposed method into the elastic FEM based on inherent strain theory, we predicted the welding deformation of a panel structure with two longitudinal stiffeners. In addition, experiments were carried out to verify the simulation results.

scholarly journals Comparative study of welding deformation of a stiffened panel under various welding procedures

2017 ◽  
Vol 233 (1) ◽  
pp. 182-191 ◽  
Author(s):  
Zhen Chen ◽  
Qi Yu ◽  
Yu Luo ◽  
R Ajit Shenoi
Keyword(s):  
Large Scale ◽  
Welding Process ◽  
Production Quality ◽  
Welding Distortion ◽  
Stiffened Panel ◽  
Welding Deformation ◽  
Large Scale Structures ◽  
Improve Production Quality ◽  
Scale Structures ◽  
Welding Procedure

The welding distortions of large-scale structures are extraordinary complicated. If an effective tool of predicting welding distortion is available, then marine design and manufacturing engineers can use this to improve production quality and reduce costs. This article focuses on the comparative studies of welding procedure of a stiffened panel. An efficient thermal elasto-plastic finite element method–based procedure is developed to predict the welding deformation and residual stress of structures. A combined shell/solid model is adopted to enhance modeling and calculation efficiency. The welding process of a stiffened panel is simulated. Three welding procedures of simultaneous, successive and bidirectional welding are studied. The results show that welding distortion can be well controlled by adjusting the welding procedure.

Metallography and Welding Process Control

1986 ◽  
pp. 197-210 ◽  
Author(s):  
C. E. Cross ◽  
O. Grong ◽  
S. Liu ◽  
J. F. Capes
Keyword(s):  
Process Control ◽  
Welding Process
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