讨论了聚四氟乙烯焊接、热拉伸、翻边等工艺技术。
The welding, hot-stretching and curling technologies of FTFE are discussed.
结果表明获得较低缩率的最佳工艺条件是：拉断机热拉伸倍数为1。
Results demonstrate the following optimum conditions for low-shrinkage sliver: hot stretch ratio of breaking machine, 1.
本发明的形状记忆聚氨酯材料在热拉伸、冷却固定形状后，经加热可回复到初始形状；
The shape memory polyurethane material after being hot stretched and cooled to fix in shape may be restore its initial shape through heating.
冷拉伸后，涤纶未拉伸丝的中空度变大，热拉伸则相反；随着拉伸倍数的提高，涤纶未拉伸丝的中空度有所下降。
Hollowness of the hollow polyester UDY increased after cool drawing, decreased after heat drawing, and was down a little while increasing drawing ratio.
由于镁晶体为密排六方结构，镁合金的室温塑性加工能力较低，因而很有必要研究镁合金的热拉伸性能，壳形件热拉深成形及其有限元模拟，为今后镁合金塑性加工提供必要技术支持。
So it is necessary to study hot stretch properties, hot drawing of shell parts and its finite element simulation of magnesium alloys for providing technical supports of plastic processing.
先洗个热淋浴或者泡个热水澡来帮助你的肌肉热身，然后躺在地板上开始拉伸。
Take a warm shower or bath to warm up your muscles beforehand, then lie on the floor and stretch.
跑步前：肌肉还没有热，所以不要过度拉伸。
BEFORE RUNNING: Your muscles will not be warm, so don't overstretch.
对试样进行了硬度、拉伸强度、断裂伸长率、热老化等性能试验；对老化后的试样表面进行了SEM表征。
Hardness, tensile strength, breaking elongation ratio and aging property of samples were tested and surface of sample after aging was represented by SEM.
研究进一步表明，材料变形的难易程度又与变温循环过程，热疲劳试样拉伸应力的增加和材料屈服强度的降低有关。
Moreover, it is revealed that the deformation resistance in the thermal cycle process is related to the increase of its tensile stress and the decrease of yield strength.
经实验发现细晶粒碳钢焊接接头拉伸试验断口在远离热影响区的母材上。
It is found that the weld of fine grain steel break apart from heat effect zone in the tensile test.
其中冷鲜肉的真空热缩包装技术及肉制品的拉伸膜包装技术是肉品包装技术的发展趋势。
The package techniques of heat shrinking and pulling and stretching film for cold fresh meat and for meat products, respectively are development trends in meat industries.
前轮对处于脆性温度区间的焊缝金属施加一个横向挤压塑性应变，减小甚至抵消致裂的拉伸应变，防止了焊接热裂纹的产生。
The front impact roller causes transverse plastic compression strain in the weld which is in the brittle temperature range, which counteracts the tensile strain which leads to hot cracking.
选择适当的温度和拉伸比进行热定形，可提高PTT织物的断裂强力和弹性回复率，但其延伸性变差。
The breaking strength and resilient-elasticity recovery of PTT fabric can be increased under suitable temperature and drawing ratio during heat setting, but its dilatability took worse.
采用调制式DSC分别对热、拉伸及高压处理后低密度聚乙烯的聚集态结构变化特点作了研究。
The effects of heating, tensile and high pressure treatments on the aggregate structure of low density polyethylene (PE-LD) samples were studied using a modulated DSC (MDSC).
不同的去溶剂温度和热亚胺化的升温方式对聚酰亚胺薄膜拉伸强度也有较大的影响。
The tensile strength of polyimide film will also be affected by the temperature of de-solvent and the heating way of thermal imidization.
对薄膜样品进行了红外光谱分析和热分析，测定了力学性能，在扫描电子显微镜上观察了薄膜拉伸断面。
The PEN/PP films were characterized by FTIR and thermal analysis, the mechanical properties were tested, the tensile fracture surfaces of PEN/PP films were observed by SEM.
在分开的拉丝机上进行拉伸、热定形、起皱和干燥步骤。
The drawing, thermal setting, creping and drying steps are carried out on a separate drawing bench.
对熔融纺丝-冷却拉伸与热致相分离两种制备微孔聚丙烯中空纤维膜的意义、原理、过程、影响因素等进行了评述。
Microporous polypropylene hollow fibrous membranes may be prepared by the melt spinning and cold stretching (MSCS) or thermally induced phase separation (TIPS) method.
测试和分析了聚乙烯管道热熔对接焊接头的结晶度、硬度、拉伸性能和冲击性能，并与基材的性能进行了比较。
Crystallinity, hardness, tensile strength and impact toughness of fusion welding joint of polyethylene pipes are tested and analyzed.
采用偏光显微镜(PLM)、差示扫描量热仪(dsc)、毛细管流变仪和拉伸试验机对透明聚丙烯(PP)的结晶形态、热学、流变性、力学性能进行了研究。
In this paper, the crystalline morphology, thermology, rheology and mechanical properties of clarified PP are investigated by PLM, DSC, Rheometer and stretch tester.
用万能拉伸实验机和差示扫描量热仪(DSC)对物理老化和应变老化的ABS试样进行研究。
ABS samples of physical aging and strain aging were studied by universal tensile test machine and differential scanning calorimeter (DSC).
在此基础上，对复合材料的拉伸应力-应变曲线进行了考虑热残余应力的有限元预测。
Based on the analyzed results, the tensile stress-strain curves of the composites were predicted with or without the residual stresses considered.
论述了辐照后包壳管在热室中的拉伸、爆破、蠕变等试验方法，比较辐照前后包壳力学性能的变化。
Tensile test, tube burst test and creep test of irradiated cladding in hot cell were discussed. The changes of mechanical properties of cladding before and after irradiation were compared.
经不同温度下的拉伸试验，考察了几种热作工具钢的中温脆性。
The medium temperature embrittlement of several hot-working tool steels has been investigated by tensile tests at various temperatures.
添加黑液干粉的复合材料，在热氧老化后拉伸强度和邵尔A型硬度增加，断裂伸长率稍有下降。
In general, the tensile strength and Shore A hardness of PVC/CPE/black liquor powder composites were increased while the elongation at break was slightly decreased after thermo-oxidative aged.
实验结果表明，复合材料的拉伸强度、热氧化稳定性、阻燃性能和热变形温度随着MHSH含量的增加而显著提高。
The results showed that the tensile strength, thermal-oxidative stability, flame retardancy and heat distortion temperature of the composites are enhanced with increasing MHSH contents.
该包装袋在沿着热封层的拉伸方向撕裂时，撕口成直线状。
When the packing bag is torn along the stretching direction of the heat-seal layer, the opening is in a straight-line shape.
本文应用超弹性材料的有限变形理论分析了在面内等双向拉伸死载荷作用下不可压热超弹性方形薄板发生非对称变形的分岔及其稳定性问题。
Bifurcation and stability of asymmetric deformations of equal-biaxial stretching of a thin elastic square sheet was examined within the framework of finite elasticity.
从涡量输运方程出发，分析得出拉伸项的存在降低了轴对称热羽流的混合强度。
The stretching term in the vorticity transport equation is found to be the main mechanism to reduce the degree of mixing in axisymmetric plume.
从涡量输运方程出发，分析得出拉伸项的存在降低了轴对称热羽流的混合强度。
The stretching term in the vorticity transport equation is found to be the main mechanism to reduce the degree of mixing in axisymmetric plume.
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