Понякога става трудно да се премахне хромираното покритие от метални продукти. въпреки това, има много налични техники. The ultimate decision depends on the metal type and chroming layer thickness. Some removal methods can be done in the comfort of your own home. въпреки това, professional services are often more effective. Safety should always come first and calling a professional is always a good idea for optimal results.
Defining Chrome Plating
Chrome plating is done by placing a thin layer of chrome onto a surface. The chromium layer gives it a bright, shiny look and sheen. освен това, it improves resistance to corrosion and tarnishing. Some common examples include auto car parts such as the bumpers and wheels. Many of the fixtures within households like door handles come with chrome plating.
Chrome Plating Process
Electroplating is the most common method used to produce chrome plates. The process relies on electrical means to cover one metal with another one. В повечето случаи, стомана или алуминий gets a chromium coating. The metal piece is cleaned before getting plated. It then dips in a chromic acid solution. The application of electric current makes chromium atoms into covalent bonds. Changing immersion time acts as a control mechanism in the thickness of the coating. Rinsing follows its achievement of the right thickness, although some oils are thick enough and do not have to undergo the process. Heating the part assists in forming a good bond with the metal part in question.
Reasons for Chrome Plating Removal
Chrome plating may also require to be stripped off. Нормално, when there is a need to make some sort of repair. If the base metal is compromised then stripping is needed. Old or damaged chrome also requires removal of the surface as a rule. Appearance can then be restored by applying a new layer.
Hazards of DIY Chrome Removal
Information about the dangers involved is crucial when stripping chrome. You must must should wear gloves, предпазни очила, and respirators. Chemical fumes are dangerous to health during chrome removal. To avoid exposure to the chemical always ensure that you work in a well-ventilated area. Do not touch the skin with chemicals or solutions. Electrical shocks are another possible risk factor. Implying the set measures in operating the equipment eradicates the chances of electrocution.
Types of Chrome Plating
Chrome plating is categorized into two types: decorative and hard chrome plating.
1. Decorative Chrome Plating
A thin layer of chromium makes up decorative chrome plating. This application offers a shiny look for beauty’s sake. It can be used often on auto parts and fixtures in the home as it provides protection. въпреки това, most of the time, decorative chrome is easier to strip.
2. Hard Chrome Plating
Hard chrome plating comprises a heavy chromium deposit. This application increases the wear resistance on the surface of metals. Most often it is applied in tools and mechanical parts of a machine. Being thicker than the decorative chrome, its removal is a much more complicated process.
Ways To Remove Chrome Plating
1. Chrome Removal with Specialized Machinery
Abrasive Blaster
- Описание: Homemade abrasive blasters involve peeling off the chrome by directing fine particles at the surface of the part.
- Съображения: Use a finer grit paper such as 400 grit in order not to cut through the base metal. Because the handling of the material generates toxic dust which is hazardous to human health.
Ultrasonic Cleaner
- Описание: Ultrasonic cleaners employ sound waves in a cleaning solution to help remove chrome from a surface.
- Съображения: Though the process is efficient, make sure that the cleaning solution does not harm the ultrasonic cleaner in any way.
2. Chrome Can Be Wiped Out Using Chemical Solutions
Using Hydrochloric Acid(Muriatic acid)
- Описание: A very concentrated acid that is capable of removing chrome plating.
- Instructions: A solution of 1:2 hydrochloric acid to water will dissolve chrome and once the chrome strips off rinse the object in water.
Sodium Hydroxide (Lye)
- Описание: An acidic substance that may be used to treat ferrous metals.
- Instructions: Dissolve 240 да се 360 ml of sodium hydroxide into 3-4 liters of water. Тогава, immerse the chrome-plated object, and wash it with clean water.
3. Process of Electroplating in Reverse
Първо, add chromic acid and sulfuric acid to the water solution. This results in a strong solution for chrome removal. След това, the solution needs to be heated to the desired temperature in the process. The temperature varies with the type of chrome plating. Connect a negative terminal from a DC source of power. Make the object to be stripped as the cathode of the positive terminal. Submerge the object into the above-said heated solution. Keep an eye on the process until the chrome is taken off. След това, it is recommended to wash the object in water until it will be clean. Discharge the chemical waste through the channel of the professional.
4. Removing Fake or Light Chrome with Household Materials
It is possible to eliminate chrome with the aid of several ordinary household products. Sodium bicarbonate is a good abrasive cleaner for the body. The combination of baking soda with water will give you a paste. Rub this paste on the chrome surface. For scrubbing, use a cloth or brush. It is advised to monitor the progress often so as not to harm the base metal. Bleach can also be used for chrome removal. Immerse the chrome-plated item in bleach for one day. Make sure to dispose of the bleach after using it. Never use bleach to wash something else as it’s toxic when ingested.
Applications of Chrome Plating
Chrome coating is one of the most commonly used surface finishing techniques whereby a layer of chromium is deposited on a substrate. The process improves the aesthetic value and material strength to make chrome plating a valuable method in numerous areas.
1. Автомобилна индустрия
- Приложение: Hard chrome plating is widely applied in automotive engineering because of its high durability and wear resistance of the components.
- Примери: Shock absorbers hydraulic cylinders and other high wear and tear apparatus. These parts acquire strength and durability from hard chrome that allows them to work efficiently in a high-stress environment.
2. Motorcycle Components
- Приложение: Chrome plating is quite imperative in motorcycles because it offers both utility and aesthetic value.
- Примери: Bicycles and their components such as handlebars, рамки, and bike exhaust systems are coated with chrome. В резултат на това, it increases their durability and also makes them visually appealing.
3. Kitchen Utensils and Fixtures
- Приложение: Bright chrome plating is used for ornamenting utensils and having kitchen appliances and fixtures at the same time.
- Примери: Chrome plating is used on such items as sinks, faucets, and cookware. It gives the various items a modern shiny look and surface that will not show signs of stains easily.
4. Аерокосмическа индустрия
- Приложение: In aerospace uses, hard chrome plating has a vital function. It increases the lifespan of parts that receive considerable strain and are exposed to various harsh conditions.
- Примери: Landing gears and hydraulic systems for aircraft, например, receive a layer of hard chromium. It’s crucial to improve wear resistance while reducing weight, which corresponds to better plane efficiency and safety.
5. Repair and Restoration
- Приложение: Hard chrome plating thus can provide a good filling material for worn-out parts and bring them to their standard size.
- Примери: Machine parts that are in contact with each other and hydraulic rods and similar items that get worn out gradually can be plated with hard chrome to repair the surface and make them like new again.
6. Индустриални машини
- Приложение: Heavy-duty equipment uses hard chrome plating on parts that experience a high level of wear when in use.
- Примери: Rollers, валове, and molds are usually plated with chrome. To expediently improve the life span of the part and to minimize wear and tear through increased efficiency.
Заключение
Dismantling chrome plating is essential in many industries to take place. The process is helpful in the restoration of the initial surface of some parts. Chrome stripping makes the components ready for refinishing or repainting. Hard chrome is hard and thus requires specialized techniques when depositing it onto any surface. It will be easier to remove the decorative chrome in most cases. New technologies enhance ways of removing chrome. Knowledge of the right approach prevents damage to the material. To get the desired finish, one needs to research properly. Expert help increases chrome removal efficiency to a considerable degree.
