GCr15模具钢冷拔模稀土盐浴渗钒

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45钢冷拔模稀土粉末渗硼

简要介绍了45钢冷拔模经稀土粉末渗硼的工艺方法及性能试验。经实际应用,稀土粉末渗硼改善了冷拔模表层的组织与性能,增加了模具表面的滑化效果,提高了拉拔钢管的表面质量,延长了模具使用寿命。

硬质合金冷拔模强化处理研究

研究了WC-Co硬质合金,特别是YG25牌号硬质合金的渗硼淬火与深冷处理强化工艺和不同含量的合金强化处理效果,并对强化机理进行了讨论。

大规格冷拔圆钢模具设计

这套大规格冷拔圆钢的模具设计方案,已成功地应用在北钢冷拔分厂的50t冷拔机上,取得了满意的效果,证明设计原理及工艺是合理的,可以推广使用。

Cr12MoV钢冷作拉延模热处理工艺的改进

我公司的压弯模、精密钢管冷拔模,均采用Cr12MoV材料制作。模具制作的好坏,直接影响着生产效率的提高,在生产中拉延、拔丝、压弯等模具常因尺寸磨损和表面产生沟槽而报废。造成这些失效的原因是多方面的,既有原材料的问题,也有锻造金属的组织成分、锻造温度的合理选择、模具的热处理质量等方面的影响,尤其是在制造过程中热处理参数的选定将直接影响模具的质量。怎样提高模具的使用寿命,是模具使用单位共同关心的问题。现就以我公司生产的精密冷拔拉延模为例,

Texture evolution and its simulation of cold drawing copper wires produced by continuous casting

The texture evolution of cold drawing copper wires produced by continuous casting was measured by X-ray diffractometry and electron back-scatter diffractometry,and was simulated using Taylor model.The results show that in the drawn poly-crystal copper wires produced by traditional continuous casting,111 and 100 duplex fiber texture forms,and with increasing strain,the intensities of 111 and 100 increase.In the drawn single-crystal copper wires produced by Ohno continuous casting,100 rotates to 111,and there is inhomogeneous distribution of fiber texture along radial direction of the wires,which is caused by the distribution of shear deformation.Compared with 100,111 fiber texture is more stable in the drawn copper wires.Comparison of the experimental results with the simulated results shows that the simulation by Taylor model can analyze the texture evolution of drawn copper wires.