BR1500HS高強(qiáng)鋼與5CrMnMo模具鋼的瞬態(tài)接觸換熱系數(shù)
[Abstract]:The heat transfer process of hot stamping is analyzed and simplified to one-dimensional heat transfer by using the self-made experimental device. The temperature changes of high strength steel and die are measured under certain pressure and certain holding time. Based on the improved inverse heat transfer algorithm, the variation of the interfacial heat transfer coefficient at a certain interface average temperature and pressure and a certain holding time is solved. The results show that the heat transfer coefficient increases with the increase of temperature and pressure and has a power function relationship with temperature and pressure. The sensitivity of heat transfer coefficient to pressure at high temperature is higher than that at low temperature. With the increase of heat preservation time, the heat transfer coefficient decreases with the increase of heat preservation time, and the heat transfer coefficient tends to be stable with the increase of pressure and holding time. At a certain holding time, the heat transfer coefficient is only related to temperature and pressure, and the influence of pressure on heat transfer coefficient is greater than that of temperature. The expression of the change of heat transfer coefficient with temperature and pressure is obtained.
【作者單位】: 重慶大學(xué)材料科學(xué)與工程學(xué)院;
【基金】:中央高;究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金資助項(xiàng)目(CDJZR13130082)~~
【分類號(hào)】:TG142.1
【相似文獻(xiàn)】
相關(guān)期刊論文 前10條
1 沈成俊;張偉民;顧劍鋒;陳乃錄;;電流法測(cè)量空氣換熱系數(shù)[J];熱加工工藝;2006年03期
2 張時(shí)鋒;李自良;;基于有限元的換熱系數(shù)反求法[J];新技術(shù)新工藝;2011年11期
3 趙長(zhǎng)義;呂利太;洪成珠;;用換熱系數(shù)評(píng)定淬火油冷卻性能的方法[J];哈爾濱科學(xué)技術(shù)大學(xué)學(xué)報(bào);1987年03期
4 趙郁芬;劉建民;;沖擊加熱換熱系數(shù)的計(jì)算機(jī)解法[J];四川冶金;1988年02期
5 袁儉,張偉民,劉占倉(cāng),陳乃錄,王鳴華,徐駿;不同冷卻方式下?lián)Q熱系數(shù)的測(cè)量與計(jì)算[J];材料熱處理學(xué)報(bào);2005年04期
6 施鴻均,楊弋濤,張恒華,邵光杰;逆向法確定鋁合金連鑄噴水冷卻的換熱系數(shù)[J];特種鑄造及有色合金;2005年09期
7 程赫明,黃協(xié)清,方夢(mèng)霞,謝建斌;具有非線性表面換熱系數(shù)半圓柱薄殼在快速冷卻過(guò)程中的熱分析[J];應(yīng)用力學(xué)學(xué)報(bào);2003年02期
8 廖凱;吳運(yùn)新;張園園;;鋁合金厚板淬火表面換熱系數(shù)的離散解析求法[J];材料熱處理學(xué)報(bào);2009年01期
9 張立強(qiáng);李落星;朱必武;李昭;;基于反分析法的凝固過(guò)程中界面換熱系數(shù)研究[J];湖南大學(xué)學(xué)報(bào)(自然科學(xué)版);2010年06期
10 羅愛華,王文清;鑄型熱物性值及金屬—鑄型界面換熱系數(shù)的測(cè)試?yán)碚摷胺椒╗J];熱加工工藝;1988年04期
相關(guān)重要報(bào)紙文章 前1條
1 李謀渭 張少軍 邊新孝 劉國(guó)勇 朱冬梅 王琳;中厚板;癄t后快冷(NAC)技術(shù)裝備[N];世界金屬導(dǎo)報(bào);2011年
相關(guān)博士學(xué)位論文 前2條
1 張立強(qiáng);凝固界面換熱系數(shù)反求及鋁合金薄壁件壓鑄造工藝優(yōu)化[D];湖南大學(xué);2011年
2 卜曉兵;Al-Cu與Al-Si-Cu合金凝固微觀組織的仿真模擬[D];湖南大學(xué);2013年
,本文編號(hào):2429099
本文鏈接:http://sikaile.net/kejilunwen/jinshugongy/2429099.html