Newburyport, MA 01950
Call 978.499.8950
Fax: 978.499.8967
Email Us
About Us
Hard Chrome
Electropolish
Contact Us
50 Parker Street, Unit #5
Newburyport, MA 01950
Call 978.499.8950
Fax: 978.499.8967
Email Us
About Hard Chrome Plating and Electropolishing Specialists
Since purchasing the Frederick R. Grover Co. of Rockport, Massachusetts in 1990, DynaChrome has continued to bring innovation to the hard chrome plating industry. This has enabled us to maintain the respectable standing in our industry that we presently hold.With over 100 years of combined plating experience we continue to take the progressive route to maintain our customer’s satisfaction and our company’s success. DynaChrome is truly committed to developing partnerships with our customers. We understand the demands of our industry and work tirelessly to maintain our consistent quality and meet the stringent lead-times that have become the industry norm. All while remaining competitively priced and readily available to all our customers’ needs.
Hard Chrome Plating and Electropolishing FAQs
1. On what materials can Hard Chrome be applied?
Chromium can be deposited on a wide variety of metals. Steels, Stainless steels, Copper and Brass are the most receptive metals for an adherent deposit. The more exotic metals, such as Inconell, Hastalloy and Titanium are more difficult to plate, but with the proper pre-treatment methods an adherent deposit can be achieved. Aluminum, in many cases, can receive a “direct” deposit of Hard Chrome. This depends on several factors; the Aluminum alloy itself, the geometry of the part, the area to be plated and the thickness of the deposit. In some cases it is necessary to deposit a layer of copper or nickel prior to Chrome.2. What Tolerances can be held after Chrome Plating?
At DynaChrome we strive to meet all reasonable and in most cases, difficult dimensional requirements. It is difficult to proclaim just what tolerances can be met. A good rule of thumb would be the less plating required and the wider the tolerance, the easier it is to satisfy the tolerance . The more plating thickness required and the closer the tolerance, the more difficult it is to satisfy the tolerance. Be assured though that we will utilize every possible technique available to satisfy your dimensional requirements.
3. How thick of a Chrome deposit can be applied?
Deposit thicknesses range from “flash” (very thin deposits .000010”) to “heavy buildups” (up to .050 in some cases). The final application of the part usually determines the thickness of the deposit. Some of these applications and the related thicknesses would be the degree of corrosion resistance required, the amount of anti-galling on stainless steel required, the amount of hardness required and the degree of wear and repair required.
4. What is the hardness of the Chrome deposit?
Chromium is ultra hard, 850-1000 Hv (68-72 Rc) harder than most industrial abrasives. These hardness factors are achieved at about an .002” deposit thickness. That does not mean that a “thinner” deposit will not significantly improve the “wear” on a surface. Due to its very low “coefficient of friction” it has ultra high metal-to-metal sliding wear resistance, a characteristic often confused with hardness. This benefit can be achieved at a thickness well below .0005”.5. What thickness of Chrome should I specify?
If you don’t have a customer, drawing or specification thickness requirement, call a DynaChrome representative. We will be happy to discuss your particular application and determine a plating thickness that will satisfy your requirements.
6. Can additional Chrome be applied over and existing Chrome Surface?
In most cases chrome can be applied to an existing layer of chrome. Upon receipt of the parts, DynaChrome technicians will evaluate the existing deposit as to its integrity, i.e. general condition, thickness and adhesion. Bear in mind that this existing layer of chrome will now be the “foundation” for the ultimate adhesion of the new chrome deposit. If we determine that the existing chrome deposit is not satisfactory we will recommend stripping the deposit and re-plating an additional thickness.
7. Do you do decorative Chrome Plating?
DynaChrome does not supply the “decorative chrome process” i.e. auto, motorcycle, boat, etc. If you require this service please give us a call and we will be happy to recommend a local company that can help you.8. What is your average turnaround?
At DynaChrome we strive to meet all reasonable, and in most cases, difficult delivery requirements. We are well aware that by the time your product reaches us it is already due, or in many cases, already late. Be assured that we will do “whatever it takes” to get your product back to you on time. Responses from our Customer Survey replies give us an excellent rating on delivery, and as important, and excellent rating in our willingness to “go the extra distance”.
9. What are your size and weight capacities?DynaChrome has five Hard Chrome tanks that service the more “precision” industries with smaller parts up to 7’ long and weights up to 700 lbs.
We also have our Roll and Feed Screw department which can service parts up to 24 feet in length and to 4 tons in weight.
10. Can existing Chrome be removed?
In most cases an existing Chrome deposit can be removed either by chemical stripping or by mechanically grinding. In many cases we recommend chemical stripping, return to customer for repair, re-plating oversize, and return to customer for final grind.
11. What kind of adhesion to the base metal should I expect?
It gives superb substrate adhesion, greater than 10,000 psi.
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