hard surface treatment

It was shown that high power pulse superposition current supply was the optimum choice for hard surface treatment of al and al alloys.

指出大功率脉冲叠加电源是铝及铝表面硬质处理的首选电源。

Practice shows that the laser treatment of hard metals surface can significantly increase the product's bending strength and wear resistance.

并通过实际应用，证实了激光表面强化处理具有使硬质合金制品的抗弯强度、耐磨性能大为提高的显著效果。

Hard anodizing film could be obtained on Al-Cu alloy surface which had been treated with solid solution treatment and natural aging.

经固溶处理和自然时效的铝铜合金可以进行硬质阳极氧化。