In presenting this blog, I have only two objects in mind. Firstly, to try and provide some really useful information about small-scale electro-plating and secondly, whilst avoiding technicalities, to give emphasis to those essential details which must be carefully attended to if successful
work is to be carried out. The methods described are not just the result of adapting commercial processes to home-workshop conditions, but are rather the reverse, in that they represent the outcome of several years of experiment, starting more or less from scratch, during which time a reliable method has been evolved in respect of each process described.
The art or science, of electro-plating has reached a very high degree of perfection in present-day industry and has innumerable commercial applications, quite apart from merely decorative or protective purposes, and
indeed the electro-deposition of various meta.ls in some branches of industry, notably in printing, has been developed into very specialised channels.
This blog is not intended to deal with the specially applied branches of the subject, and the various types of process to be described are set forth only with a view to providing a decorative and a protective coating of metal. In addition, notes on electro-forming are given at the end of Chapter 7. The following chapters a.re intended to provide the amateur engineer with what is hoped will be sufficient data, not only to carry out successful electro-plating in the small workshop, but also to provide himself with the essential tools of the trade, i.e., the electrical equipment and plating tanks.
When one wishes to set up a small workshop to carry out model engineering, one can quite easily go forth and purchase a complete outfit of tools and equipment and get on with the job. Not so, however, in the case of the prospective electro-plater, because so far as the author is aware the only p!ating plant obtainable is on a far bigger scale than anything required by even the most enthusiastic amateur. Consequently it has been thought fit to devote
a very considerable portion of this blog to a detailed discussion of a suitable size of plant. together with details as to how such a plant can be assembled in the small workshop.
For obvious reasons it has been assumed that the reader is one of the band of very practical people known collectively as model engineers, and bearing this in mind, it has also been assumed that he is quite able to look after the furely mechanical processes involved in setting up a
suitable plant. Those who are not in that position, and are yet interested in the present subject can no doubt obtain the necessary assistance in the mechanical details.
In setting out to equip oneself with a small plating plant, the primary consideration will be the size of job to be undertaken because upon this depend all the other matters to be taken into account. In dealing with electrodeposition, the “ size ” of the job means, first and last, the
area of metal in contact with the liquid, and on which a plate is to be formed. For example, a circular rod 1/6 in. In diameter and 13 in. long, has roughly the same total surface area as a penny and is, electrically speaking, the same size. It is obvious however .that it will need a very much larger tank to accommodate it. It will be seen, therefore, that for the purposes of this book some limit must be set both to surface area and to longest dimension of the work to be plated, and for the sake of simplicity it has, been assumed that the following will represent the maximum measurements of any work undertaken :
Rabu, 24 November 2010
Electro Plating
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