首页> 外文会议>Materials forum - aluminium alloys, their physical and mechanical properties - Volume 28 - 2004 >Reduction of Temperature Extremes at the Die Exitin Aluminum Alloys Extrusion
【24h】

Reduction of Temperature Extremes at the Die Exitin Aluminum Alloys Extrusion

机译:降低铝合金挤压模出口处的极端温度

获取原文
获取原文并翻译 | 示例

摘要

In extrusion of billets with initially uniform temperature, the maximum temperature at thernperiphery varies with length of the emerging extrudate. The permitted maximum for anrnalloy is determined by the lower melting point at which surface cracking ruins the product.rnEven less extreme values cause problems by increasing the tendency to non-uniformrnrecrystallization with loss of strength. A potential solution to the problem is gradient billetrnheating where the nose is hotter so that the reduced initial pressure and work gives arnsmaller rise in temperature. Another solution is direct die cooling to extract more of thernheat generated in the hot zone and thus lower the temperature at the die land. The resultsrnof investigations clarify the extent that various measures can succeed.
机译:在最初具有均匀温度的坯料挤出过程中,周围温度的最高温度会随着出现的挤出物的长度而变化。合金允许的最大值由较低的熔点决定,在该熔点处表面裂纹会破坏产品。rn极少的极限值会通过增加不均匀再结晶的趋势而导致强度降低而引起问题。解决该问题的一种可能的方法是在鼻子较热的地方进行梯度加热,以便降低初始压力和功,从而使温度升高幅度较小。另一种解决方案是直接模具冷却,以提取更多在热区中产生的热量,从而降低模具区域的温度。结果调查明确了各种措施能否成功的程度。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号