铝棒在进入挤压机之前是要预加热的。传统观念也许，铝棒必须在加热炉内加热到固溶温度，铝卷○但经验显示这不是一定的。只要铝棒被正确的铸锭和均化，就没有必要在铝棒预热炉里达到固溶温度。在现代铝挤压工厂里大马力生产，铝棒加热…
The aluminum bar should be pre heated before entering the extruder. The traditional idea is that aluminum rods must be heated to the solid solution temperature in the reheating furnace, but the experience shows that this is not necessarily. As long as the aluminum bar is properly inlaid and homogenized, it is not necessary to achieve the solid solution temperature in the aluminum rod preheating furnace. In the modern aluminum extrusion plant, the production of large horsepower, the heating of aluminum rods.
铝棒在进入挤压机之前是要预加热的。传统观念也许， 铝棒必须在加热炉内加热到固溶温度，Ⅻ但经验显示这不是一定的。只要铝棒被正确的铸锭和均化，就没有必要在铝棒预热炉里达到固溶温度。在现代铝挤压工厂里以产代进，铝棒加热炉的目的就是让金属软化。如果金属加热不够铝卷销售，铝卷销售计算公式就没有办法顺利通过模具。如果铝棒加热过热有效释放， 在铝棒预热区测温典型的问题有：
The aluminum bar should be pre heated before entering the extruder. Traditionally, aluminum rods must be heated to a solid solution temperature in a furnace, but experience shows that this is not necessarily true. As long as the aluminum bar is properly inlaid and homogenized, it is not necessary to achieve the solid solution temperature in the aluminum rod preheating furnace. In the modern aluminum extrusion plant, the only purpose of the furnace is to soften the metal. If the metal is not heated enough to sell aluminum rolls, the formula for the calculation of aluminum rolls will not be able to pass the mold smoothly. If the aluminum bar is overheated and effectively released, the typical problems of temperature measurement in the preheating zone of aluminum rods are:
两点式的热电偶读数会偏低
A two point type of thermocouple will be on the low side
两点式热电偶的日常维护经常被忽略
The daily maintenance of a two point thermocouple is often ignored
均匀化热处理温度是铝棒的关键参数
The temperature of homogenizing heat treatment is the key parameter of aluminum rod

操作者倾向于过度加热铝棒
The operator tends to overheat the aluminum rod
操作者倾向于降低挤压速度来微调铝棒在挤压中的温度变化
The operator tends to reduce the extrusion speed to fine tune the temperature changes of the aluminum bar during extrusion.
过度加热和慢速挤压都浪费了预热的能源
Excessive heating and slow extrusion waste the energy of preheating.
铝棒应该加热到能够挤压的较低温度，铝卷销售规格表同时必须保证挤压机出口的温度达到目标值。通过降低铝棒预热温度，挤压速度就可以提上来，⒀铝卷销售价格这样加热炉的能量消耗就会减少。实践证明经济数据，这样的改变能节省燃气加热炉15-20%的能耗。
The aluminum bar should be heated to the lowest temperature that can be extruded. The aluminum roll sales specification must also ensure that the outlet temperature of the extruder reaches the target value. By reducing the preheating temperature of the aluminum bar, the extrusion speed can be raised, and the energy consumption of the reheating furnace will be reduced. Practice has proved that economic data can save energy consumption of 15-20% in gas fired furnace.
对于燃气加热炉廉价进口产品，铝棒区间温度是使用两点式的热电偶测温。因为这类仪表对维护都有很高的要求，Ⅴ使用这样一台仪表本身的优越性，要么会花费很高维护费铝卷销售，铝卷销售试验报告要么会失去精确度。一些铝挤压厂已开始使用非接触式传感器检测和控制铝棒区域加热段的温度。不但减少了对接触式热电偶测温计的依赖，⒇而且减少了因仪表本身局限性带来的维护问题和精确度问题。
For the cheap imported products of gas heater, the temperature of the aluminum rod is measured by two point thermocouple. Because such instruments have high requirements for maintenance, V. using the superiority of such an instrument itself, or the high cost of maintenance of aluminium rolls, the aluminum volume sales test report will either lose accuracy. Some aluminum extrusion plants have started using non-contact sensors to detect and control the temperature of the heating section of the aluminum rod region. It not only reduces the dependence on the contact thermocouple thermometer, but also reduces the maintenance and accuracy problems caused by the limitations of the instrument itself.