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流體力學與鋼筘質量 Flow Dynamic and Reed Quality 流体力学与钢筘质量

06.11.2016

 

(For English version, please refer to the latter part/简体参阅后半部)

德國庫恩茨技術資料

壓強 / 氣流

鋼筘齒片經沖壓,拋光打磨,並將成型的邊緣指向同一方向作排列。雖然同一批次生產,在顯微鏡下觀察,其凹凸,邊緣,彎曲,表面性質,及金屬結構等等均有差異。

為有效模擬出織造時經紗片層實況,當量的鋼筘筘齒片被並排佈置並形成一個風洞。由此,緯紗將予以高達1300次/分鐘氣流吹噴。理論上緯紗應以均勻的氣流被輸送,因前述的各種差異,風洞內的緯紗會產生湍[國語音:tuan1/粵語音:teon1]流(或稱紊流)。

我們以主噴頭加中繼噴頭建立了一個(恆定壓差的)氣流模擬系統,對其湍流進行測量。通過風洞湍流測量數據的採集來分析其與鋼筘差異的關係。然後每處位置予以拋光後,使得空氣流量增加或減小,直至最後整個鋼筘保持均勻地氣流分佈。氣壓的高低與筘齒片密度,經紗密度和齒邊形狀,紗線原料和織物組織的呈函數關係。

該靜態壓力越高,緯紗越容易滑動,能量需求下降,從而能耗成本降低。

靜態壓力係數也會因鋼筘的(空運)付運,存放不當,以及安裝處理情況有所改變。

我們能為我們的客戶提供相關的建議,來優化各個客戶個性化,織物組織相關靜態壓力係數。此外,我們更可以為貴廠的技術人員提供培訓,使貴方有能力在現場重建靜態壓力數據(香港A&A諮詢按:意指在現場對鋼筘進行修復)。

德國庫恩茨高端織造技術

 

+++ KUENZEL technical information +++

Pressure / airflow

Blades of reed dents are punched in series, ground and pointed at the edges. Although this occurs in series, they are distinguished by microscopic irregularities, edges, bends, through the surface, the metallic structure, etc

In the production of an airweb warp sheet, a plurality of dents are arranged side by side and form a tunnel. Through this, the weft yarn is passed on an air stream at up to 1,300 times per minute. This weft thread must necessarily be transported in a uniform air stream. However, due to the aforementioned irregularities, turbulence of the air occurs and the weft t is carried out of the tunnel.

In order to prevent this, we simulate the airflow (static pressure) of the main and nozzles in a system and measure this or its turbulences. From this measurement, we get a measurement report and see where irregularities occur in the reed. Each of these locations is then polished so that the air stream rises or falls and is thus held uniformly over the entire reed.

The height of the pressure is dependent on the density of the weaving reeds, the warp and shape of reed dent edge, the material as well as the fabric specification.

The higher the static pressure, the slimmer the weft, the lower the energy requirement and thus the energy costs.

The static pressure changes due to deposits (aviation), incorrect storage as well as due to installation-related handling.

We will gladly advise you and optimize your individual, fabric-dependent pressure. We also train you to rebuild the pressure on a retracted reed.

 

KUENZEL advanced weaving technologies

 

德国库恩茨技术资料

压强 / 气流

钢筘齿片经冲压,抛光打磨,并将成型的边缘指向同一方向作排列。虽然同一批次生产,在显微镜下观察,其凹凸,边缘,弯曲,表面性质,及金属结构等等均有差异。

为有效模拟出织造时经纱片层实况,当量的钢筘筘齿片被并排布置并形成一个风洞。由此,纬纱将予以高达1300次/分钟气流吹喷。理论上纬纱应以均匀的气流被输送,因前述的各种差异,风洞内的纬纱会产生湍[普通话音:tuan1]流(或称紊流)。

我们以主喷头加中继喷头建立了一个(恒定压差的)气流模拟系统,对其湍流进行测量。通过风洞湍流测量数据的采集来分析其与钢筘差异的关系。然後每处位置予以抛光後,使得空气流量增加或减小,直至最後整个钢筘保持均匀地气流分布。气压的高低与筘齿片密度,经纱密度和齿边形状,纱线原料和织物组织的呈函数关系。

该静态压力越高,纬纱越容易滑动,能量需求下降,从而能耗成本降低。

静态压力系数也会因钢筘的(空运)付运,存放不当,以及安装处理情况有所改变。

我们能为我们的客户提供相关的建议,来优化各个客户个性化,织物组织相关静态压力系数。此外,我们更可以为贵厂的技术人员提供培训,使贵方有能力在现场重建静态压力数据(香港A&A谘询按∶意指在现场对钢筘进行修复)。

德国库恩茨高端织造技术

 

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