Remanufacturing method for scrap titanium chips through ball milling-equal channel angularpressing
An equal-channel corner and remanufacturing technology, which is applied in the direction of using liquid cleaning methods, cleaning methods and utensils, chemical instruments and methods, etc., can solve difficult microstructure refinement, strength loss, coarsening of ultrafine structure grains, etc. problems, achieve the effect of preventing continuous distribution and aggregation, simple and practical process operation, and excellent technical indicators
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[0027] Hereinafter, preferred embodiments of the present invention are given in conjunction with the drawings to illustrate the technical solutions of the present invention in detail.
[0028] Step (1)-Ti chip recovery pretreatment:
[0029] The grade 2 Ti (ASTMGrade2) chips generated by end milling are used as raw materials. After the chips are collected, the chemical composition (mass percentage, wt%) is analyzed by inductively coupled plasma atomic emission spectroscopy (ICP-AES). The results are shown in Table 1. It can be seen from Table 1 that the chemical composition (such as oxygen content) of the Ti 2 grade chips processed by end milling meets the ASTM standard range. At the same time, 99.9% ethanol is used to clean Ti chips in the ultrasonic vibration tank to remove oil and impurities in the raw materials.
[0030] Step (2)-BM treatment of Ti chips:
[0031] Put the Ti chips obtained in step (1) into a steel BM container, and the mass ratio between the chips and the steel ...
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