Strike conditions differ widely from shop to shop.
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2. 选择适宜的预镀液的酸度也可以提高镀层质量。
By selecting suitable acidity of preplating bath, the coating quality can also be I...
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3. 研究了钨表面镀前处理及预镀铬、镍，然后镀金的工艺条件；
The paper studied the pre treatment for electroplating the surface of tungsten and technical conditions for chromate treatment, nickel and gold plating, determined the functions of cladding material.
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4. 采用“活化-预镀镍”前处理方法，能有效提高镀层的结合力。
The adhesion can be improved greatly with the activation pretreatment and pre-nickel plating.
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5. 通过实验手段，研究了稀土对电沉积法制备泡沫铜化学预镀工艺的影响。
The effect of rare earths on the chemical pre-plating process for electro-deposition of foamy copper was studied through experiments.
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6. 研究了化学镀锡预镀溶液的组成和工艺条件对镀层厚度和表面形貌的影响。
The effects of the composition and technological conditions of electroless tin preplating bath on the thickness and morphology of the coatings are investigated.
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7. 研究了化学镀锡预镀溶液的组成和工艺条件对镀层厚度和表面形貌的影响。
Release features and surface topography of coated urea with rosin and tung oil as film-forming materials;
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8. 指针的表面电镀需经过下列几道工序：过滤、去油脂、预镀镍、镀镍，之间还穿插了数次清洗。
The finish of the hand is achieved by electroplating involving several stages: leaching, degreasing, pre-nickelplating and nickelplating, along with numerous rinses.
The formation and growth kinetics of the intermetallic compounds through reaction between liquid Zn and low carbon steel containing Si which is treated by electroless pre-plating ni are analyzed.
A coating combination of nickel strike, semi-bright and bright nickel, nickel sealing plus decorative chromium is suggested to provide motorcycle parts with the standard quality finish.
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11. 利用SEM观察了活化膜和预化学镀镍层的表面形貌。
The morphology of activation film and pre-electroless Ni coating was analyzed by scanning electron microscope(SEM).
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12. 利用SEM观察了活化膜和预化学镀镍层的表面形貌。
The morphology of activation film and pre-electroless Ni coating was analyzed by scanning electron microscope(SEM).
