Burnishing of iron and steel. simple recipes

Free technical library

FACTORY TECHNOLOGIES AT HOME - SIMPLE RECIPES
Free library / Directory / Factory technology at home - simple recipes

Burnishing of iron and steel. Simple recipes and tips

Factory technologies - simple recipes

Directory / Factory technology at home - simple recipes

Comments on the article

Burnishing of iron and steel objects It aims not only to give an external color to an object, but to protect it from the oxidizing action of air and dampness. Special attention should be paid to pre-cleaning.

Iron objects can be given different colors from light orange to dark blue just by heating, and this color depends on the degree of heating of the object. If heated to 220 °C - a light orange color is obtained, up to 225 °C - orange, 235 °C - yellow, 277 °C - purple, 280 °C - blue, 299 °C - blue, 316 °C - black blue.

Greenish brown color (for gun barrels)

1 wt. hours of antimony trichloride triturated with 3 wt. hours of olive oil; the resulting mixture is applied to the surface of the object with a thin layer with a rag and the object is left in this form for 24 hours. After this period, the object becomes rusty, and when the procedure is repeated, it turns brown. Burning is repeated until the desired color is obtained. Usually it lasts 10-12 days, and the process proceeds faster in a warm room. After bluing, the object is thoroughly washed, dried, polished with a polishing stone or varnished or varnished.

Blue colour

1st recipe:

Make up a mixture of a solution of 140 g of sodium sulphate (hyposulfite) in 1 liter of water and 35 g of lead acetate in 1 liter of water. An object is immersed in this mixture and kept in it until it takes on a dark blue color. It is useful to heat the solution to a boil.

2st recipe:

1 wt. hours of red blood salt in 200 g of water and 1 wt. h. Ferric chloride in 200 g of water. Cleaned objects are immersed in the resulting mixture, the color is very strong, but this mixture should be used carefully, as it is poisonous.

Red-brown color

Dissolve 15-20% ferric chloride in 1 liter of water. Replacing the water with alcohol or denatured alcohol gives better results and an even color. The solution is applied to the object twice with an interval of several hours, then the resulting plaque is treated with an iron brush and the solution is applied again. After bluing, the object is varnished or varnished.

Dark brown

Items are immersed in a solution of 30% ferrous sulfate, 15% ferric chloride, 12 g of honey nitrate in 1 liter of water, to which a little denatured alcohol is added. Instead of dipping, apply this solution to the object with a soft brush and let it dry! The rusty coating that appears is brushed off and the operation is repeated until a strong dark brown color is obtained.

Black color

1st recipe:

The object is immersed in a 10% solution of potassium dichromate (chromic) for 15-20 minutes, taken out, dried in air and kept for two minutes over strongly burning, but not smoking coals. After the first time, a black-brown color is obtained. If this operation is repeated several times, then a pure black color is obtained.

2st recipe:

The object is covered with a uniform thin layer of linseed oil or drying oil and heated over a strongly burning red-hot charcoal (without a blower). The oil layer is charred and burned. This operation is repeated several times. After each heating and cooling, the object is rubbed with a dry cloth. The last time the object is heated weakly, and rubbing is done with a rag dipped in linen drying oil.

3st recipe:

The cleaned object is first subjected to pickling, that is, it is immersed for a short time in a mixture of 1 wt. including concentrated sulfuric acid and 20 wt. hours of water. After that, the object is washed, dried and covered with a solution prepared in a water bath with a solution of 1 wt. hours of sulfur color in 16 wt. hours of turpentine, then the object is slightly heated until a black coating forms.

If necessary, coating with sulfur solution and heating is repeated.

For burnishing cast iron products in black, they are dipped into a solution of 5-10 wt. hours of copper sulfate and 5-10 wt. hours of sulfuric acid in 100 wt. including water, washed with water and immersed in a solution of 6 wt. hours of sulfuric liver and 20 g of ammonia in 100 wt. hours of water.

Author: Korolev V.A.

We recommend interesting articles Section Factory technology at home - simple recipes:

▪ Violet mordant for brass items

▪ Dyeing stockings

▪ Lead-glycerine mass

See other articles Section Factory technology at home - simple recipes.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

Machine for thinning flowers in gardens 02.05.2024

In modern agriculture, technological progress is developing aimed at increasing the efficiency of plant care processes. The innovative Florix flower thinning machine was presented in Italy, designed to optimize the harvesting stage. This tool is equipped with mobile arms, allowing it to be easily adapted to the needs of the garden. The operator can adjust the speed of the thin wires by controlling them from the tractor cab using a joystick. This approach significantly increases the efficiency of the flower thinning process, providing the possibility of individual adjustment to the specific conditions of the garden, as well as the variety and type of fruit grown in it. After testing the Florix machine for two years on various types of fruit, the results were very encouraging. Farmers such as Filiberto Montanari, who has used a Florix machine for several years, have reported a significant reduction in the time and labor required to thin flowers. ... >>

Advanced Infrared Microscope 02.05.2024

Microscopes play an important role in scientific research, allowing scientists to delve into structures and processes invisible to the eye. However, various microscopy methods have their limitations, and among them was the limitation of resolution when using the infrared range. But the latest achievements of Japanese researchers from the University of Tokyo open up new prospects for studying the microworld. Scientists from the University of Tokyo have unveiled a new microscope that will revolutionize the capabilities of infrared microscopy. This advanced instrument allows you to see the internal structures of living bacteria with amazing clarity on the nanometer scale. Typically, mid-infrared microscopes are limited by low resolution, but the latest development from Japanese researchers overcomes these limitations. According to scientists, the developed microscope allows creating images with a resolution of up to 120 nanometers, which is 30 times higher than the resolution of traditional microscopes. ... >>

Air trap for insects 01.05.2024

Agriculture is one of the key sectors of the economy, and pest control is an integral part of this process. A team of scientists from the Indian Council of Agricultural Research-Central Potato Research Institute (ICAR-CPRI), Shimla, has come up with an innovative solution to this problem - a wind-powered insect air trap. This device addresses the shortcomings of traditional pest control methods by providing real-time insect population data. The trap is powered entirely by wind energy, making it an environmentally friendly solution that requires no power. Its unique design allows monitoring of both harmful and beneficial insects, providing a complete overview of the population in any agricultural area. “By assessing target pests at the right time, we can take necessary measures to control both pests and diseases,” says Kapil ... >>

Random news from the Archive

Cookies baked in space for the first time 25.01.2020

During the experiment, the scientists were able to cook cookies in a special oven, which was delivered to the station in November.

Different detachments of astronauts tried to cook dishes in space five times, but failed each time. The cookies also failed to bake according to the recipe that was developed for the Earth - the researchers baked them in the oven for 25 minutes at a temperature of 149 ° C, but they turned out raw. Only when they kept the blanks in the oven for two hours, the confection turned out to be ready.

At the same time, the astronauts did not try the cookies they had prepared. It was brought back to Earth two weeks later, frozen and placed in a US laboratory refrigerator.

Further tests will show if it is safe to eat. Part of the concern stems from the fact that oven manufacturers expected a difference in cooking time in space and on Earth, but it should have been several times less.

“We need to study what is actually driving this difference, but this is definitely a cool result,” said one of the engineers, Mary Murphy. “Overall, it is clear that this is a very breakthrough first experiment of its kind.”

Other interesting news:

▪ TI UCC28070 controller

▪ Reflections on abstract topics lead to inspiration

▪ Flying racing electric car Alauda Airspeeder Mk3

▪ New Benchmark MOSFETs International Rectifier

▪ Ferroelectric non-volatile memory FM25L256

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the site Children's scientific laboratory. Article selection

▪ Article Consumer Behavior. Crib

▪ article Why do we dance? Detailed answer

▪ article Compiler minced meat. Job description

▪ article Aniline stains for wood. Simple recipes and tips

▪ article High quality interconnect cables. Encyclopedia of radio electronics and electrical engineering

Leave your comment on this article:

All languages of this page

Home page | Library | Articles | Website map | Site Reviews