阅读说明：本技术 无磁性镍磷合金的电镀配方及其连续电镀工艺 (Electroplating formula of nonmagnetic nickel-phosphorus alloy and continuous electroplating process thereof ) 是由 朱秀芳 郭探 云山 于 2019-09-24 设计创作，主要内容包括：本发明涉及连续电镀领域,公开了一种无磁性镍磷合金的电镀配方及其连续电镀工艺,该电镀配方包括氨基磺酸镍500ml/l、氯化镍8g/l、硼酸40g/l、磷酸17g/l和3-己炔-2,5-二醇1.2g/l；使用该配方电镀出的镍磷合金镀层中磷的质量百分比为11~16%；该镍磷合金镀层的特点是：1.致密性和耐腐蚀性比化学镍好；2.优异的耐磨、磁学、光学、力学优势；3.传统得到需求性能的镍磷合金是用化学镍方式完成,该工艺解决了化学镍品质不稳定、产量低、电镀成本高、含磷排放多,不环保等问题。(the invention relates to the field of continuous electroplating, and discloses an electroplating formula of a nonmagnetic nickel ~ phosphorus alloy and a continuous electroplating process thereof, wherein the electroplating formula comprises 500ml/l of nickel sulfamate, 8g/l of nickel chloride, 40g/l of boric acid, 17g/l of phosphoric acid and 1.2g/l of 3 ~ hexyne ~ 2, 5 ~ diol, and the mass percentage of phosphorus in a nickel ~ phosphorus alloy coating electroplated by using the formula is 11 ~ 16%.)

1. an electroplating formula of a nonmagnetic nickel ~ phosphorus alloy is characterized by comprising 450 ~ 550ml/l of nickel sulfamate, 6 ~ 12g/l of nickel chloride, 35 ~ 45g/l of boric acid, 17g/l of phosphoric acid and 1.2g/l of 3 ~ hexyne ~ 2, 5 ~ diol, wherein the mass percent of phosphorus in a nickel ~ phosphorus alloy coating electroplated by using the formula is 11 ~ 16%.

2. A continuous electroplating process of a nonmagnetic nickel-phosphorus alloy is characterized by comprising the following steps:

Oil removal

Acid pickling

the nickel-phosphorus plating method comprises the step of using the electroplating formula of the nonmagnetic nickel-phosphorus alloy in claim 1, wherein the temperature is controlled to be 60 ℃, the pH value is 1.5-2, and the current density is 8-10 ASD.

3. The continuous electroplating process of the nonmagnetic nickel-phosphorus alloy according to claim 2, characterized by comprising the following operations in the degreasing step:

ultrasonic degreasing at the bath solution temperature of 60 ℃, current density of 8 ~ 15ASD, electrolytic degreasing of alkaline degreasing powder aqueous solution → normal temperature washing → hot washing at 40 ~ 50 ℃.

4. The continuous electroplating process of the nonmagnetic nickel-phosphorus alloy according to claim 2, characterized in that the pickling step specifically comprises the following operations:

soaking in 20% sulfuric acid for 8 ~ 20S → washing with water at normal temperature → washing with hot water at 40 ~ 50 ℃.

Technical Field

The invention relates to the field of continuous electroplating, in particular to an electroplating formula of a nonmagnetic nickel-phosphorus alloy and a continuous electroplating process thereof.

background

The nickel-phosphorus alloy has the advantages of compact plating layer, corrosion resistance, wear resistance, excellent magnetism, optics, electricity and the like, is widely applied to products such as automobiles, communication, aviation, consumer electronics and the like, and is realized by adopting a chemical plating mode for a long time, but the chemical plating operation parameters are difficult to adjust, the quality is unstable, the yield is low, the productivity is low, chemical nickel needs to be re-bathed every five production periods (about two continuous production days), the technical difficulty of recovering phosphorus in scrapped plating liquid is high, and the trouble is brought to wastewater treatment, so the production cost is high.

Disclosure of Invention

the purpose of the invention is as follows: aiming at the problems in the prior art, the invention provides an electroplating formula of a nonmagnetic nickel-phosphorus alloy and a continuous electroplating process thereof, wherein the mass percent of phosphorus in a nickel-phosphorus alloy coating electroplated by using the electroplating formula and the electroplating process can reach more than 11 percent to form an amorphous coating, and the compactness, the corrosion resistance and the magnetism of the amorphous coating are superior to those of chemical plating.

the technical scheme includes that the non ~ magnetic nickel ~ phosphorus alloy electroplating formula comprises 450 ~ 550ml/l of nickel sulfamate, 6 ~ 12g/l of nickel chloride, 35 ~ 45g/l of boric acid, 17g/l of phosphoric acid and 1.2g/l of 3 ~ hexyne ~ 2, 5 ~ diol, and the mass percentage of phosphorus in the nickel ~ phosphorus alloy electroplated by the formula is 11 ~ 16%.

the invention also provides a continuous electroplating process of the nonmagnetic nickel ~ phosphorus alloy, which comprises the following steps of oil removal, acid pickling and nickel ~ phosphorus plating, wherein the formula of the nonmagnetic nickel ~ phosphorus alloy is used for electroplating, the temperature is controlled to be 60 ℃, the pH value is 1.5 ~ 2, and the current density is 8 ~ 10 ASD.

further, in the oil removing step, the operation specifically comprises the following operations of ultrasonic oil removal at the bath solution temperature of 60 ℃, current density of 8 ~ 15ASD, electrolytic oil removal of alkaline oil removal powder in water solution → normal temperature water washing → hot water washing at 40 ~ 50 ℃.

further, the pickling step specifically comprises the following operations of soaking 8 ~ 20S in 20% sulfuric acid → washing with water at normal temperature → washing with hot water at 40 ~ 50 ℃.

Has the advantages that: the process can obtain amorphous nickel-phosphorus alloy coating with phosphorus mass percentage up to more than 11% by setting parameters of various components in degreasing, pickling, nickel-phosphorus plating and nickel-phosphorus plating liquid medicine and using phosphoric acid with valence state of +5 and a semigloss agent of 3-hexyne-2, 5-diol in a matching way, wherein nickel is one of paramagnetic substances, when the phosphorus content in the phosphorus-nickel alloy reaches more than 11%, the nickel-phosphorus structure has no symmetry and periodic repeatability, and an electron diffraction pattern, a neutron diffraction pattern and an X-ray diffraction pattern of the nickel-phosphorus alloy consist of wider corona and dispersive rings, so that the nickel-phosphorus alloy coating forms amorphous isotropy and has the characteristic of no magnetism. The amorphous nickel-phosphorus alloy coating is characterized in that: 1. non-magnetic; 2. the compactness and the corrosion resistance are better than those of chemical nickel; 3. excellent wear-resisting, magnetism, optics, mechanics advantage; the use of 3-hexyne-2, 5-diol in the electroplating formula ensures that the nickel-phosphorus plating layer has luster (or semi-luster) and the appearance of the plating layer is beautiful, smooth and beautiful. Compared with the traditional chemical nickel plating mode, the nickel-phosphorus alloy plating layer electroplated by the process has stable quality, high yield, low electroplating cost, less phosphorus emission and more environmental protection, all the defects of the chemical nickel-phosphorus alloy plating are solved, the phosphorus content can reach more than 11 percent to form an amorphous nickel-phosphorus alloy plating layer, and the compactness, the corrosion resistance and the magnetism of the amorphous nickel-phosphorus alloy plating layer are superior to those of the chemical plating.

drawings

FIG. 1 is a flow chart of an electroplating process of a nonmagnetic nickel-phosphorus alloy;

FIG. 2 is a photograph of a 2000-fold scanning electron microscope of a nickel-phosphorus alloy coating obtained by the electroplating formulation and process of embodiment 1;

FIG. 3 is a 30-fold scanning electron microscope photograph of a nickel-phosphorus alloy coating obtained by the electroplating formulation and process of embodiment 1;

FIG. 4 is an EDS test pattern of the nickel-phosphorus alloy plating in box 1 of FIG. 3;

FIG. 5 is an EDS test pattern of the nickel-phosphorous alloy coating in box 2 of FIG. 3.

Detailed Description

the present invention will be described in detail with reference to the accompanying drawings.