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Research on the Cooling Effect of Hot Stamping Mould with Mixed Discharging Cooling System

Author: WangHongGuang
Tutor: XingZhongWen
School: Harbin Institute of Technology
Course: Mechanical Engineering
Keywords: Hot stamping Simulation Analysis Cooling System Cooling effect
CLC: TG386
Type: Master's thesis
Year: 2011
Downloads: 135
Quote: 2
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Abstract


Hot stamping technology is a sheet metal forming and cooling quenching combination of new complex forming technology . Use of the technology to high-strength steel plate into the body structural parts , we can achieve a lightweight body , but also to ensure the safety of the vehicle . The strength of the hot stamping mainly depends on the extent of the forming process austenite into martensite martensite degree of conversion depends on the cooling rate and cooling uniformity formed parts , which will require that the hot forming mold with excellent cooling system. Scramble the cooling system cavity aqueduct , with the support columns spoiler , can effectively achieve rapid and uniform cooling of the formed parts . Therefore, in-depth study hot forming mold scramble the cooling effect of the cooling system , accelerating the scramble hot forming die in the actual production , promote the development of the automotive industry is of great significance . Based on the principle of heat transfer and fluid dynamics , taking into account the strength of the mold structure , numerical simulation computational efficiency and calculation accuracy , designed to scramble the hot forming die to determine the numerical simulation method and turbulence model . CFX fluid analysis software to establish the finite element model of the hot forming die , scramble the hot forming mold holding pressure cooling stage was simulated . Analysis of the impact of process conditions on the formed parts and mold thermal equilibrium and temperature field distribution obtained when the cooling water flow rate to 3.5m / s , the dwell time of 10s and holding pressure 12MPa when mold cooling effect . The reliability and accuracy of boron steel to hot BR1500HS stamping as test material , the a rectangular box scramble cooling system hot stamping forming tests , analysis of the influence of the mold cooling effect of the cooling water flow rate and dwell time , to verify the simulation , combined with simulation analysis to determine a reasonable process parameters, scramble the hot forming mold to promote its optimized design of the cooling system to provide a scientific basis and theoretical basis .

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal pressure processing > Cold stamping ( sheet metal processing) > Cold stamping process
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