熔丝

The invention relates to a tobacco filter tip and relative preparation, wherein it is formed by spinning the lactic acid polymer resin, drawing, coiling and shaping, while the line density is 2-6dtex, the beam density is 3-6ktex, the coil number is 15-30n/25mm.

本发明涉及一种香烟过滤嘴丝束及其制备方法。该香烟过滤嘴丝束，是由乳酸类聚合物树脂经熔体纺丝和后续的牵伸、卷曲和热定型而成，单丝线密度2～6dtex，丝束线密度3～6ktex，卷曲数15～30个/25mm。

For example, the application of molybdenum trioxide electro-colour glass,molybdenum electrode in mid-alkali glass fiber instead of platinum drawn wire furnace as well as full-electrofusion or ancillary-electrofusion glass furnace and mineral melting.

例如，三氧化钼电致色玻璃、钼电极在中碱玻纤代铂拉丝炉以及在全电熔或辅助电熔玻璃窑和钼电极用到矿物体熔制中的应用等等都相继在提高玻璃质量、增加产量、节能降耗方面取得了显著的经济效益。

These characteristics of polylactide fiber promote its applications in the areas of fibers and nonwovens, And polylactide fibers can be made to the circular cross section of monofilament or multifilament、trilobal cross-section BCF (can be used for weaving carpets and blankets)、crimp or curly short fiber、the two-component fibers、spunbonded nonwovens and meltblown nonwovens, etc.

这些特性刺激了聚乳酸纤维在纤维和非织造布领域的应用，并且聚乳酸纤维可以制成圆截面的单丝或复丝、三叶形截面的BCF、卷曲或非卷曲的短纤维、双组份纤维、纺粘非织造布和熔喷非织造布等，这使聚乳酸纤维在服装市场、家用及装饰市场、非织造布市场、双组份纤维领域、卫生及医用等领域有潜在的应用前景。

The calculation of melt shear rate , jet stretch ratio and spinneret back pressure was analyzed and discussed, which decided the diameter and L/D ratio of spinneret.

分析了涤纶长丝生产中喷丝板选用的相关理论，对熔体的切变速率、喷丝头拉伸比、喷丝板背压的计算方法进行分析讨论，认为 3个参数可作为选择喷丝板微孔直径和长径比的依据，并举实例进行了验

The results showed that the enhanced stirring action of the liquid metals in weld pool due to peak-current fluctuating periodically under single-wire synergic pulsed MIG welding decreased temperature gradients and increased heterogeneous nuclei within the region of constitutional supercool...

试验结果表明，单丝复合脉冲焊接时，峰值电流周期性变化引起的熔池液体强烈的搅拌作用，使熔池的温度梯度降低，固液界面前沿成分过冷区中的形核核心增加，促进了焊缝组织的细化，提高了焊缝的强度和塑性。

To get a property comparison of GXHJ－ 1 sintered welding agent with SJ101 sintered welding agent, related tests were carried out, including deposited metal test, lab butt－ joint plate test, single－ welding stick operation test, double－ welding stick operation test as well as operation test with H08C welding stick, focusing differences of the two in terms of technological properties and weld seam impact toughness.

为了比较 GXHJ－ 1和 SJ101两种烧结焊剂的性能，分别从熔敷金属性能试验、实验室对接板试验、单丝焊生产、双丝焊生产等方面及在匹配 H08C焊丝的条件下进行了工艺性能和焊缝冲击韧性对比。

The finite element model of temperature field of micro melting bath in melting spinning was developed based on the fabrication of glass-coated pure copper.

摘 要：针对玻璃包覆纯铜微丝的制备，建立熔融纺丝微熔池温度场的有限元模型，采用磁热耦合方法分析原料质量、加热电流、感应线圈匝数及锥角对微熔池平均温度及下部与上部温差的影响规律。

The relationships between welding pool width, wire extension and welding parameters including welding current duty ratio, base current, peak current, welding speed and wire-feeding speed were studied. Through large numbers of welding experiments, aluminum alloy pulsed MIG welding dynamic process were identified by the curve fitting method, and the mathematical models between welding current duty ratio, base current, welding speed, wire-feeding speed and wire extension were obtained, succeeding the model between the above parameters and weld pool width.

介绍了铝合金MIG焊焊接电流占空比、基值电流、峰值电流、焊接速度、送丝速度对熔宽的影响规律，并在其基础上，通过平板堆焊试验研究了这些参数对焊接干伸长的影响规律；在铝合金机器人脉冲MIG焊平板堆焊过程各焊接参数与正面熔宽之间的传递函数的基础上，采用铝合金平板堆焊阶跃试验，利用曲线拟合法辨识了铝合金机器人脉冲MIG焊动态过程传递函数，建立了焊接电流占空比、基值电流、焊接速度、送丝速度与焊接干伸长之间的对象数学模型。

In order to reveal the mechanism of the twin-wire co-pool gas-shielded metal arc welding and to optimize the corresponding welding parameters,the mathematical model describing the fluid flow in the molten pool is investigated.

为了解双丝共熔池气体保护焊的工艺机理，优化工艺参数，对其熔池流场数学模型进行了研究。

The droplet transfer in the twin-wire co-pool gas-shielded metal arc welding process greatly affects the welding seam appearance and the welding quality.

双丝共熔池气体保护焊的熔滴过渡对焊缝成形以及焊接质量具有重要的影响。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。