高性能的热传导辊

BEP 为许多工业应用专门设计和制造高性能的热传导辊(也称为加热和冷却辊)。

热传导辊通过辊内冷却液流动或循环加热提供温度控制。 辊的设计及内置螺旋槽的构造是非常重要的。 很多的热动力学和机械因素都要考虑进去。

BEP 可以针对辊的设计和生产方法为您提供建议, 以确保您获得最优的性能和效率。

Copper Shell Chill Rolls

COPPER SHELLED CHILL ROLLS HAVE THE CAPABILITY TO PRODUCE MORE PRODUCT FOR THE SAME FLOOR SPACE, USE LESS ENERGY AND SOLVE CONDENSATE PROBLEMS.

  • Greatly increased Line speeds
  • 10 times the thermal efficiency of steel rolls
  • Reduced cooling costs
  • Lower energy consumption
  • Elimination of condensation on roll ends
  • Repeatable high quality finishes

 

HIGH EFFICIENCY COPPER CHILL ROLLS

BEP has more than 250 high performance copper chill rolls in circulation around the globe.
Many of the world’s leading laminators, cast film producers and high quality textured paper manufacturers have chosen to invest in our rolls because they produce higher quality products, at greater speed, using less energy.

In 2002, we observed that our clients were unable to operate their production lines at optimum levels of performance due to the inherent limitations of both steel and aluminium chill rolls. This led us to design our first copper chill roll product.

We are experts at electroforming high quality, seamless copper tubes to any thickness our clients specify. Our unique method of manufacture delivers the best combination of heat transfer and roll rigidity.
With coppers anti – corrosive qualities and high thermal efficiency, our rolls were a natural choice for companies who wished to increase their line speeds, improve their product quality and reduce their operating costs.

An additional unforeseen benefit of selecting copper shelled chill rolls was that our clients became able to reduce their capital expenditure on other components within their manufacturing lines.

BEP’s unique proposition allows us to replace an outer steel shell with a fine grain electroformed copper shell, up to 20mm thickness depending on application, which we then shrink fit over stainless steel guiding spirals welded to an inner core. This provides great strength and enhanced resistance to deformation.

WHY USE COPPER?

We use copper because its thermal coefficient of heat transfer is 10 times that of steel. This means that during the time the copper shell is in contact with PE it can absorb up to 10 times more heat. This can dramatically reduce the contact time compared with steel rolls, hence allowing the line to operate at greater speeds.

CHILL ROLL COOLING ENERGY SAVINGS

Engineering experts have confirmed that for every 1°C increase in cooling water temperature, a 5% saving in energy costs can be delivered. Therefore a copper chill roll operating at 20°C can deliver the same performance as a steel roll operating at 10°C, whilst still offering you the potential to reduce your refrigeration costs by up to 50%.

Operating chill rolls at 20°C also means that in high humidity climates, condensation does not build up on the cold ends of the roll, thus reducing product waste.

压延辊/硬化辊

压延辊用于压延 或 “平滑” 和用于模压、层压、涂层、拉伸、抛光、压纹。

我们的压延辊可以由单一或双壳设计和硬化约 54Rc。 辊体是由42 CrMo4 钢经回火、应力释放和硬化制成。 辊通常在BEP工厂镀铬,表面是超级镜面。

脱气

热镀铬辊用于塑料行业通常需要热处理, 去除铬上的氢。 如果处理不当,透过铬,氢能渗透出来导致塑料薄膜或片材上出现小气泡。

为客户节省在使用之前预热辊的生产时间, 我们可以将辊在一专门构建的温度控制的烤箱中。 我们可以精确控制辊的加热温度并和记录温度配置文件数据。 在热处理过程中的辊是垂直挂起, 以消除任何可能出现的失真。

热力学

BEP 已开发了一种内部使用的热力学模型的工具, 帮助我们的客户更好地了解如何为其产品在接触辊时是如何进行加热或冷却的。

最常用的淋膜机, 但辊有足够的灵活性可以适应其他方案如油加热辊或更多的专业应用。

无论您正在考虑将钢辊更换为铜辊或是要优化您的现有的工艺中, 我们都很乐意为您提供帮助。

单击我们的咨询表

 

内部清洁

使用冷却辊和加热辊的用户可能会遇到水道因水垢或锈蚀被堵塞的问题。 如果水道没有完全被阻塞和锈迹没有腐蚀到外壳通常我们是可以清洁它们的。

该过程包括由BEP研发的解决方案,将有温度控制的清洁液体用水泵注入辊的水道,将水垢及锈去除, 从而恢复到该辊原来的散热的功效。

清洗后残留的酸度是被中性化的,然后用水彻底清洗并注入防锈剂。

在清洁过程中所有的残余化学品通过我们的污水处理之后再排放到下水道。