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铝卷预热过程中常见的问题及均匀性?

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  铝棒在进入挤出机前要预热。传统观念,也许㊣酒吧必须在炉内加热固溶温度、铝卷但经验表明,现在还不确定。铝棒预热器无需达到固溶温度,只要铝棒正确浇注均匀即可。
  Aluminum rods should be preheated before entering the extruder. Traditionally, bars may have to heat solution temperatures and aluminium coils in ovens, but experience has shown that it is not yet certain. Aluminum rod preheater does not need to reach solution temperature, as long as the aluminium rod is properly poured uniformly.
  铝棒在进入挤出机前要预热。传统的想法,也许,炉内的酒吧必须加热到固溶温度、Ⅻ但经验表明,现在还不确定。只要棒材浇铸正确、均匀化,棒材预热器中不需要达到固溶温度。在现代铝挤压设备中,@铝棒炉的唯一目的是软化金属。如果金属加热不足以销售铝盘管,铝盘管的销售计算公式将无法顺利通过模具。如果铝棒被加热到过热,挤出速度必须非常低。
  Aluminum rods should be preheated before entering the extruder. Traditionally, bars in ovens may have to be heated to solid solution temperatures and_, but experience has shown that it is not yet certain. As long as the bar is cast correctly and evenly, the solution temperature in the bar preheater does not need to be reached. In modern aluminium extrusion equipment, the sole purpose of @aluminium bar furnace is to soften metals. If the metal heating is not enough to sell the aluminum coil, the sales calculation formula of the aluminum coil will not pass through the die smoothly. If the aluminium rod is heated to overheat, the extrusion speed must be very low.
  铝棒预热区温度测量的典型问题有:
  Typical problems of temperature measurement in aluminium bar preheating zone are as follows:
  1.两点热电偶读数会很低
  1. Two-point thermocouple readings will be very low
  2.两点热电偶的日常维护经常被忽略
  2. Daily maintenance of two-point thermocouples is often neglected.
  3.均匀化热处理温度是铝棒的关键参数
  3. Homogenization heat treatment temperature is the key parameter of aluminium bar

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  4.操作人员容易使铝棒过热
  4. Operators can easily overheat aluminium rods.
  5.操编辑倾向于通过降低挤出速度来微调铝棒在挤出过程中的温度变化
  5. Operators tend to fine-tune the temperature change of aluminium rods during extrusion by reducing extrusion speed.
  6.过热和缓慢挤压浪费预热能源
  6. Overheating and Slow Extrusion Waste Preheating Energy
  铝棒应加热到可挤出的低温度,铝卷的销售规格也必须确保挤出机出口温度达到目标值。通过降低铝棒的预热温度,可以提高挤压速度,如何提高铝量的销售价格,使加热炉的能耗降低。实践证明,经济数据表明,这样的改造可以节约燃气加热炉15-20%的能源消耗。
  Aluminum bars should be heated to the lowest extrudable temperature, and the sales specifications of aluminium coils must ensure that the extruder outlet temperature reaches the target value. By reducing the preheating temperature of aluminium rod, the extrusion speed can be increased, and how to increase the selling price of aluminium quantity can reduce the energy consumption of heating furnace. Practice has proved that the economic data show that this transformation can save 15-20% of the energy consumption of gas heating furnace.
  对于低价进口燃气加热器,采用两点热电偶测量铝棒间隔温度。因为这种仪器维护要求高,Ⅴ使用这种仪器本身的优点,还是非常昂贵的维护铝卷销售、铝卷销售测试报告或失去准确性。一些铝挤压厂已经开始使用非接触传感器来检测和控制铝棒加热段的温度。不仅减少了依赖联系热电偶温度计,⒇,减少了维护问题由于仪器本身的局限性和准确性。
  For cheap imported gas heater, two-point thermocouple is used to measure the interval temperature of aluminium rod. Because of the high maintenance requirements of this instrument, V uses the advantages of this instrument itself, or very expensive maintenance of the sales of aluminium coil, aluminium coil sales test report or loss of accuracy. Some aluminium extrusion plants have begun to use non-contact sensors to detect and control the temperature of the heating section of aluminium bars. It not only reduces the dependence on the thermocouple thermometer, _, but also reduces the maintenance problems due to the limitations and accuracy of the instrument itself.
  在感应加热炉系统中,红外温度传感器直接对准铝棒表面的直销力,vii可以直接了解温度“产生顶进”,从而减少两点热电偶使用中的不一致性。同样,为燃气热水器,传感器可以安装在炉出口(挤压管入口)理解铝棒的表面温度,Ⅱ也用于正确的炉内的温度热电偶或红外测温仪温度偏差。铝棒温度测量部分酒吧是理想的位置,Ⅵ检查均热段温度。测量侧面的温度也因为这一面会先接触模具。
  In the induction heating furnace system, the infrared temperature sensor directly aligns with the direct force on the surface of the aluminium rod, VII can directly understand the temperature "jacking", thus reducing the inconsistency in the use of the two-point thermocouple. Similarly, for gas water heaters, sensors can be installed at the furnace outlet (extrusion tube inlet) to understand the surface temperature of aluminium rods. II is also used for correct temperature deviation of thermocouples or infrared thermometers in the furnace. Aluminum bar temperature measurement part of the bar is the ideal location, VI check the soaking section temperature. The temperature of the side is also measured because this side will contact the die first.
  对于梯度加热铝棒,可以在铝棒输送带的一侧安装一个传感器来了解铝盘管的销售温度,也可以安装两个传感器来测量铝棒的两段温度。准确的梯度加热温度对铝棒连续进入挤出机至关重要。不准确的温度测量会使梯度加热失去意义。
  For gradient heated aluminium rods, a sensor can be installed on one side of the aluminium rod conveyor belt to understand the sales temperature of the aluminium coil, and two sensors can be installed to measure the temperature of the two sections of the aluminium rod. Accurate gradient heating temperature is essential for continuous entry of aluminium rods into the extruder. Incorrect temperature measurements can make gradient heating meaningless.
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