Powder metallurgy brass-based etching material with anti-paraffin-precipitation function and preparation method thereof
A powder metallurgy and base material technology, applied in the field of brass-based etching materials and their preparation, can solve the problems of difficult implementation, long production cycle and high cost of complex anti-waxing parts, and achieve good anti-waxing effect.
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Embodiment 1
[0014] A powder metallurgy brass-based etching material with anti-wax function and a preparation method thereof, comprising the following steps:
[0015] The first step, the preparation of powder metallurgy brass:
[0016] (1) Ball milling and mixing: mix the pre-alloyed powder with alloy components of Cu80wt%, Zn20wt% and 0.6wt% zinc stearate, and use QM-3A high-energy pendulum ball mill to mix the powder to make the raw material powder components homogeneous and fine particles.
[0017] (2) Compacting compact: adopt SJY50-150T manual isostatic press to compact compact, and the compacting pressure is 800MPa.
[0018] (3) Sintering: The sintering route is as follows: first, heat up to 640°C at a rate of 10°C / min, hold for 40 minutes, then slow down the heating rate to 5°C / min, rise to a sintering temperature of 880°C, and sinter for 60 minutes. The sintering atmosphere is decomposed ammonia. During sintering, in order to reduce the loss of zinc, prevent the compact from bei...
Embodiment 2
[0026] The alloy composition described in this example is 72wt% Cu, 18wt% Zn, 10wt% Ni. All the other preparation processes are the same as in Example 1. The surface was tested for anti-wax deposition, and the amount of wax deposition per unit area was 3.18mg / cm 2 .
Embodiment 3
[0028] In this embodiment, the pressing pressure for preparing powder metallurgy brass is 320 MPa, the sintering temperature is 840° C., and no etching treatment is performed. The surface was tested for anti-wax deposition, and the amount of wax deposition per unit area was 8.31mg / cm 2 .
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