Numerical Calculation About Influence of Crystallizer Structure on the Stress Evolution Process of Horizontal Continuous Casting of Copper Tubes

2021 ◽  
Author(s):  
Yao Xiao ◽  
Yi Han ◽  
Ming Huang ◽  
Xin-Liang Gao ◽  
Jia-Yin Liu
Keyword(s):  
Continuous Casting ◽  
Equivalent Stress ◽  
Semimajor Axis ◽  
Casting Process ◽  
Element Model ◽  
Cooling Zone ◽  
Continuous Casting Process ◽  
Horizontal Continuous Casting ◽  
Temperature Field Model ◽  
Measurement Experiment

Abstract The horizontal continuous casting plays a key role in the production of inner grooved copper tubes. In order to improve the accuracy of the temperature field model of the copper tubes horizontal continuous casting process, the model heat transfer coefficient was validated through temperature measurement experiment of graphite crystallizer. The finite element model of stress field evolution was established, based on considering the temperature and microstructure changes. It was found that tensile stress was generated in the outer layer of the casting billet and compressive stress was generated in the inner layer, when the casting billet entered the primary cooling zone. The paper investigated the mechanism of the liquid inlet number and shape on the microstructure and stress distribution after the casting billet was solidified. When the number of liquid inlets was 6, the ratio of the semimajor axis of ellipsoid to the short semi-axis was 3:2 and the backward tilt angle was 10°, the equivalent stress value of the casting billet was smaller and the grains were dense and uniform. This paper promotes the research of horizontal continuous casting process and provides measurable reference for improving the quality of casting billet in the further.

Simulation and Implementation for the Speed Control System of Horizontal Continuous Casting Dragger for Copper

2011 ◽  
Vol 383-390 ◽  
pp. 1696-1700 ◽  
Author(s):  
Yue Dong Chen ◽  
Zhen Hua Xia
Keyword(s):  
Control System ◽  
Continuous Casting ◽  
Production Efficiency ◽  
Digital Signal ◽  
Speed Control ◽  
Casting Process ◽  
Variable Speed ◽  
Continuous Casting Process ◽  
Horizontal Continuous Casting ◽  
Drive Control

The levels of continuous casting process of copper and copper alloy billet have many advantages, such as taking small footprint, low investment and the shorter flow. Recently, it develops very quickly all over the world. This article designs the dummy body drive control system based on the DSP digital signal processing chips, inverter and variable speed induction motor, and uses the unique process that space vector pulse width modulation strategy can achieve continuous casting horizontal tractor’s four beats to realize continuous casting process’ high-quality, stable and reliable implementation. Early in the 19th century, German Bismarck had proposed a continuous casting process in his patent. The development of this method in the copper industry began in 1940s, the type of equipment went through belt type, vibration mold, vertical traction type, tilt casting type and Horizontal traction type [1, 2]. Now, horizontal traction, as the most popular method abroad, because its products don’t need straightening, and consistency of properties along the length and high density of grain lead to the improvements of mechanical properties and electrical properties, its superiority in product quality and production efficiency is obvious. The design combined the modern AC variable speed control and advanced SCM control technology and traction continuous casting process to design a Speed controller of horizontal continuous casting of copper traction motor, its performance is similar with to dummy industrial control computer and AC servo motor drive control system, but the configuration of the hardware is less than half the price.

Influence of casting speed on fabricating Al-1%Mn and Al-10%Si alloy clad slab

2017 ◽  
Vol 24 (3) ◽  
pp. 371-378
Author(s):  
Yingshui Yu ◽  
Jinchuan Jie ◽  
Jianbo Sun ◽  
Tingju Li
Keyword(s):  
Continuous Casting ◽  
Casting Speed ◽  
Liquid Fraction ◽  
Casting Process ◽  
Tensile Tests ◽  
Cooling Zone ◽  
Continuous Casting Process ◽  
Engineering Software ◽  
Metallurgical Bonding ◽  
Simulation Results

AbstractIn this paper, the effect of casting speed on fabricating Al-1%Mn and Al-10%Si alloy clad slab was investigated. Before the trials with the semi-continuous casting process were conducted, a series of simulation with the engineering software FLUENT was made to forecast the influence of the casting speed on the temperature field and the liquid fraction of the clad slab. The simulation results indicated that the increase of the casting speed reduces the time in the cooling zone, thus the thickness of the Al-1%Mn solidification shell under the dividing plate gets thinner. Based on the simulation results, the Al-1%Mn alloy and Al-10%Si alloy clad slab was successfully produced by semi-continuous casting process. The interface of clad ingots was investigated by methods of metallographic and electron probe microanalysis. The tests on the interface confirmed the simulation results and showed that a clad slab of two different aluminum alloys with excellent metallurgical bonding was achieved by semi-continuous casting. According to the result of the tensile tests, the strength of the specimens remains at 110 MPa, and the fracture position located in the Al-1%Mn alloy indicates that the strength of the interface is higher than that of the Al-1%Mn alloy.

Research on Oxygen Content and Crack Control of Oxygen-Free Copper Billet in Horizontal Continuous Casting Process

2012 ◽  
Vol 569 ◽  
pp. 264-267
Author(s):  
Ming En Guo ◽  
Yun Xu Shi ◽  
Yu Chen Guo
Keyword(s):  
Continuous Casting ◽  
Oxygen Content ◽  
Casting Process ◽  
Melting Process ◽  
Continuous Casting Process ◽  
Copper Strip ◽  
Horizontal Continuous Casting ◽  
Crack Control ◽  
Three Stages ◽  
Two Stages

In this paper, research on reducing oxygen content and crack in oxygen-free copper strip during horizontal continuous casting process has been taken. First, reform the original copper alloy smelting-holding-casting three stages process. Through developing melting and holding integrative furnace, combine melting process and holding process for one, reforming smelting holding-casting two stages process. Second, pick up and realize on-off valve technics on controlling flow or stop of undercurrents copper liquid. Third, analyze the cracks in oxygen-free copper billet with flakinessratio 6500/20mm. And finally determine reasonable cooling process parameters through experiments. The results shows when oxygen content ≤0.0004% and density rise to 8.94-8.95 g/cm3, the crack has been completely eliminated.

Sign in / Sign up

Export Citation Format

Share Document