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1)  porous NiTi alloy
多孔NiTi合金
1.
Internal friction behaviors of porous NiTi alloys with variable porosities
可变孔隙率多孔NiTi合金的内耗行为
2.
Strain field distribution, which was calculated from the changes of density and direction of moire at the margin and the center of pore wall, indicated that the failure of porous NiTi alloy can be attributed to the stress concentration near the margin of pore wall.
在外加压缩载荷的作用下,多孔NiTi合金的孔壁边缘和心部除承受压缩应力外,还承受较大的剪切应力作用。
3.
In this study,a detailed investigation had been made regarding the variation in internal frication and Young's modulus in porous NiTi alloys with different component and pore rates.
本文利用苏州职业大学测试技术研究所设计改进的LMR-1型低频力学驰豫谱测量系统(低频扭摆式内耗仪)强迫振动方式,在0℃~200℃温度范围内测量了不同成分和孔隙率NiTi合金的内耗和模量性质,为设计多孔NiTi合金在耗能减振方面的应用提供依据。
2)  porous NiTi alloys
多孔NiTi合金
1.
Compression mechanical behavior of porous NiTi alloys exhibiting high linear superelasticity
高线性超弹性多孔NiTi合金的压缩力学行为
2.
In a variety of prepared sintering conditions, porous NiTi alloys with the main component for the B2 (NiTi) phase, B19 (NiTi) and with Ni_4Ti_3 phase, in which the main phase with B2.
粉末冶金法制备的多孔NiTi合金具有良好的生物力学相容性,且可保证新骨组织的长入和体液的传输,使植入物与人体骨组织的结合更加牢固可靠,有望用于硬组织替代材料和外科植入材料。
3)  Porous NiTi Shape Memory alloys
多孔NiTi形状记忆合金
1.
Properties of porous NiTi shape memory alloys prepared by thermal-explosion reaction synthesis;
热爆反应合成多孔NiTi形状记忆合金的性能
4)  porous NiTi
多孔NiTi
1.
The microstructure and martensitic transformation behavior of this porous NiTi SMA aged at different conditions were studied.
制备出的多孔NiTi合金具有接近球状的孔,孔径在50-200μm,孔的分布均匀且各向同性。
5)  NiTi alloy
NiTi合金
1.
Microstructures and properties of laser spot-welded joint of superelastic NiTi alloy wire;
超弹性NiTi合金丝激光点焊接头的组织和性能
2.
Microstructure and corrosion behavior of laser surface re - melted NiTi alloy;
激光重熔NiTi合金表面组织与腐蚀行为
3.
Preparation and characterization of bilayer bioactive film on medical NiTi alloy surface;
医用NiTi合金表面双层生物活性薄膜的制备及表征
6)  NiTi alloys
NiTi合金
1.
Surface modification of biomedical NiTi alloys with coldplasma technique;
医用NiTi合金低温等离子体表面改性
2.
The effects of a DC electric field up to 1kV/cm on the deformation behavior of NiTi alloys were determined at constant strain rate of 2.
在600℃和较低应变速率下进行NiTi合金的拉伸实验,研究了拉伸过程中外加电场(E=1 kV/cm)对其高温变形行为的影响。
3.
The characterization of PEG-like structures grafted on NiTi alloys surface under oxygen/di(ethylene glycol) methyl cold-plasma-process from electron cyclotron resonance conditions was studies in this paper.
本文研究了氧 二 (乙二醇 )甲醚低温等离子体条件下NiTi合金表面接枝PEG结构及其性质。
补充资料:用挤压丝锥加工铝合金螺孔
在对不同材质的螺纹孔加工过程中可以发现,对于材质致密、有较高强度的材料(如钢件)上的螺纹孔,由于其粗糙度、刚性和强度较高,所使用的螺栓可多次旋进旋出,螺孔也不易损坏;而对于铝合金件上的螺纹孔,其粗糙度和强度较低,经螺栓反复旋进旋出后,螺孔很容易损坏,从而影响工件的使用。采用挤压丝锥加工铝合金工件上的螺孔则可较好防止螺孔损坏。
由于铝合金压铸件表面1mm以下容易出现气孔,所以采用钻孔、攻丝等常规加工工艺容易产生断扣,而采用挤压成形工艺加工出的螺纹孔强度较高。挤压成形是一种非切削加工,理论上内孔表面材质预留量与所形成的螺纹在单位长度内体积相等,据此可以算出挤压丝锥加工的螺纹底孔尺寸如下:
螺纹规格-底孔直径
M3-2.71mm
M4-3.74mm
M5—4.64mm
M6-5.55mm
(上偏差+0.05mm,下偏差-0.08mm)
M8-7.45mm
M10-9.35mm
M12-11.25mm
(上偏差+0.06mm,下偏差-0.12mm)
鉴于螺纹挤压成形的特殊性,其切削参数也与普通丝锥有所不同。根据实际的使用经验,在提高效率和保证刀具正常使用的前提下,较为理想的切削用量如下(以M5、M6丝锥为例):
M5丝锥:转速400r/min,进给量320mm/min
M6丝锥:转速400r/min,进给量400mm/min
此外,建议在攻螺纹前使用相应的底孔钻头顺整底孔,消除底孔缺陷,防止挤压丝锥断裂。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条