scholarly journals Effects of Cooling Water Velocity on Temperature Field of Hot Billet Conveyor Roller

2016 ◽  
Author(s):  
Cunhai Pan ◽  
Sa Luo
Keyword(s):  
Temperature Field ◽  
Cooling Water ◽  
Water Velocity ◽  
Conveyor Roller

Numerical Simulation Investigation on the Temperature Field Distribution and Variations in Hot Stamping Process

2010 ◽  
Vol 44-47 ◽  
pp. 992-996
Author(s):  
Lei Zhang ◽  
Guo Qun Zhao ◽  
Hui Ping Li
Keyword(s):  
Temperature Field ◽  
Field Distribution ◽  
Hot Stamping ◽  
Water Channel ◽  
Cooling Water ◽  
Temperature History ◽  
Temperature Field Distribution ◽  
Finite Element Software ◽  
Stamping Process ◽  
Die Surface

With finite element software Abaqus, a coupled thermal mechanical simulation of hot stamping process of U-Channel part using high strength steel was performed. Through the analysis of the temperature field distribution on the die surface, the influence of contact state between die and blank on the temperature field distribution was discussed. With temperature history curve of a selected node on die corner, the heat flow on two contact boundaries (die surface and cooling water channel surface) was discussed and its effects rules on the die temperature were given.

Model and Imitation of the Cycle Temperature Fields and Deformations of Coke Drum

2011 ◽  
Vol 197-198 ◽  
pp. 1389-1394
Author(s):  
Sun Yi Chen
Keyword(s):  
Temperature Field ◽  
Temperature Difference ◽  
Cooling Water ◽  
Physical Property ◽  
Temperature Fields ◽  
Maximum Temperature ◽  
Kinetic Temperature ◽  
Maximum Temperature Difference ◽  
Radial Temperature ◽  
Inside Wall

When the operating process of delay coking is cyclically changing from 25°C to 500°C, it would usually induce the effect of heat treatment on the shell of coke drum. After a special model of the kinetic medium climbing along the inside-wall of the coke drum at a steady rate set up, the resulting two-dimensional kinetic temperature field of shell in radial and axial directions has been calculated and analyzed by FEM. The relation between the material physical property of the shell and its temperature has been considered. The results show that the radial temperature difference or the axial temperature difference caused by the cooling water is more than that caused by the hot oil. The maximum temperature difference between the inside-wall and the outside-wall is 40°C below the medium level, 30mm by the hot oil and 60 °C or 25 mm by the cooling water. The circumferential uneven temperature field, location and concave/convex or incline/bend of body have been surveyed and analyzed. The lat-circle deformation of transverse section has been discussed.

Numerical Simulation of Temperature Field and Microstructure of a Wide Copper Plate during Warm Mold Continuous Casting

2017 ◽  
Vol 898 ◽  
pp. 1289-1299 ◽  
Author(s):  
Feng Yi ◽  
Xue Feng Liu
Keyword(s):  
Temperature Field ◽  
Continuous Casting ◽  
Temperature Difference ◽  
New Technology ◽  
Cooling Water ◽  
Processing Parameters ◽  
Copper Plate ◽  
Optimal Processing ◽  
Copper Melt ◽  
Uniform Temperature Field

Wide plates are mainly prepared through traditional cold mold continuous casting technology. A problem is cracking which caused by the non-uniform temperature field in solidification. Warm mold continuous casting is a new technology. Warm mold continuous casting of wide copper plate (section 500mm×12mm) was studies. Temperature field, solid/liquid interface and microstructure were analyzed by ProCAST software. By simulation, the optimal processing parameters: withdrawing speed was 60-80 mm/min, and the temperature of copper melt, mold and cooling water were 1200°C, 800-900oC and 20 oC, respectively. The temperature field in the width direction of the copper plate broad face was uniform, and the temperature decreased uniformly along the withdrawing direction. The temperature difference between center and edge was within 10 oC, and the temperature difference between narrow and broadfaces was within 25oC. Microstructure of plate contained ‘bamboo-like’ grains along the withdrawing direction.

Thermal Transfer Boundary Condition and Thermal Load of Piston for Torpedo Cam Engines

2011 ◽  
Vol 704-705 ◽  
pp. 619-624
Author(s):  
Qin Chao Xu ◽  
Shu Zong Wang ◽  
Yong Qing Lian
Keyword(s):  
Boundary Condition ◽  
Temperature Field ◽  
Thermal Load ◽  
Cooling Water ◽  
Thermal Boundary Condition ◽  
Analysis Software ◽  
Element Analysis ◽  
Thermal Transfer ◽  
Engine Piston ◽  
The Finite Element Analysis

Piston of cam engines for torpedo works in terrible condition and always be caused fatigue breakdown by thermal load. In this paper, the thermal boundary condition of different piston parts are ascertained, such as the crown surface of piston and high-temp gas, the side of piston and cooling water, and the skirt of piston and cooling oil. Then the piston’s temperature field is obtained by using the finite element analysis software. This result provides the practical reference for further improving the structure and optimizing the design of the piston. Keywords: cam engine; piston; heat-transfer coefficient; temperature field.

Temperature Sensitivity Analysis of Massive Concrete Mixing with Slag Powder and Fly Ash

2012 ◽  
Vol 594-597 ◽  
pp. 804-807
Author(s):  
Feng Wang ◽  
Chi Chen
Keyword(s):  
Temperature Field ◽  
Fly Ash ◽  
Cooling Water ◽  
Maximum Temperature ◽  
Transient Temperature ◽  
Temperature Peak ◽  
Pouring Temperature ◽  
Massive Concrete ◽  
Slag Powder ◽  
Pile Cap

For concrete double mixing with slag powder and fly ash, in order to more accurately measure the temperature and crack, the calculation model of transient temperature field is established by finite element method, as taking the temperature controlling of massive concrete mixing with slag powder and fly ash of pile cap in Dongsha Bridge for example. The effect of cooling water temperatures and pouring temperature on temperature field of pile cap are analyzed. The results show that the cooling water temperature has less effect on central maximum temperature in early days, but more effect on cooling rate in late stage. The pouring temperature has more effect on maximum temperature. The temperature peak will rise with pouring temperature increasing, but the time of temperature peak arising is invariant.

Analysis on the Effects of Cooling Water Velocity on Temperature Rise of Motorized Spindle

2014 ◽  
Vol 543-547 ◽  
pp. 68-71 ◽  
Author(s):  
Nan Chen ◽  
Ke Zhang ◽  
Li Xiu Zhang ◽  
Yu Hou Wu
Keyword(s):  
Simulation Analysis ◽  
Cooling System ◽  
Cooling Water ◽  
Water Velocity ◽  
Cooling Effect ◽  
Motorized Spindle ◽  
Theoretical Derivation ◽  
Ansys Cfx ◽  
The Difference ◽  
Water Cooling System

In order to obtain the optimal cooling water velocity, the relationship between motor spindle temperature and cooling water velocity was derived by using the heat transfer and fluid mechanics. When the cooling water velocity was relatively small, its change has significantly influence on cooling effect; But when the cooling water velocity was relative large, the difference in cooling effect was inappreciable. Motor spindles water cooling system based on the software of ANSYS CFX was established. The cooling water velocity and temperature distribution in circular channel was analyzed. Motor spindle temperature of theory and simulation was compared under different cooling water velocity; Experiments were conducted according to the results of the simulation, Experimental temperature is consistent with simulation results, which verify the validity of motorized spindle simulation analysis and theoretical derivation. The study in this paper provides a reference for the motorized spindle selecting the rational velocity of cooling water.

Studies on the Cooling Effects of Water Cooling Channels in Die Casting Die in Finite Element Method

2012 ◽  
Vol 500 ◽  
pp. 397-402 ◽  
Author(s):  
Xin Ping Hu ◽  
Juan Zhang ◽  
Da Wei Lu ◽  
Wen Jun Min
Keyword(s):  
Temperature Field ◽  
Die Casting ◽  
Water Channel ◽  
Cooling Water ◽  
Casting Process ◽  
Water Cooling ◽  
Cooling Channels ◽  
Die Casting Die ◽  
Cooling Effects ◽  
Die Temperature

Die casting is a high productive method to produce non ferrous castings such as Al, Mg alloy. And die temperature field paid important effects on the casting quality and die life. Die temperature field was controlled mainly by water cooling channel in die. In this paper, some factors influenced the die temperature such as the temperature of cooling water, the location of cooling water channel, the diameter of cooling water channel, the amount of cooling water channel were discussed and analyzed by FEM. These results are very practical in die casting process.

Investigation of Bulging Behavior of Coke Drum: Feasible Study on Causes of Bulging

2011 ◽  
Author(s):  
Mitsuru Ohata ◽  
Nana Kawai ◽  
Tetsuya Tagawa ◽  
Fumiyoshi Minami ◽  
Toshiya Yamamoto ◽  
...  
Keyword(s):  
Temperature Field ◽  
Ambient Temperature ◽  
Temperature Profile ◽  
Shell Structure ◽  
Cooling Water ◽  
Fe Analysis ◽  
Large Strains ◽  
Shell Surface ◽  
Feasible Study ◽  
Rapid Drop

Coke drums undergo cyclic operations typically in the temperature range from ambient temperature to about 500°C (930°F). During quenching, the coke drum is inevitably subjected to a rapid drop in temperature because cooling water is injected directly into the coke drum through the bottom inlet nozzle. The temperature profile on the shell surface is no more uneven in quenching, and can vary in each cycle of quenching operation. Such complicate thermal profile induces large strains in the shell portion of the coke drum, and eventually causes damage like bulging or cracking. This study makes investigations into the bulging behavior of the coke drum by the thermal elastic-plastic FE-analysis. In this work, a feasible study is conducted on potential causes of bulging. As factors inducing a heterogeneous plasticity in the shell structure of the coke drum, the strength overmatch of welds and the uneven temperature field in quenching as well as quenching conditions are focused.

Sign in / Sign up

Export Citation Format

Share Document