My system is not decent

Chapter 1828 Top craftsmanship varies widely

The bronze dome is a witness to the life of the nobles in the Western Han Dynasty in ancient my country. It has been buried for more than a thousand years, and now it has been rediscovered.

The exquisite patterns on the bronze donut reflect the artistic level at that time.

From the side, it reflects the social background and the development of economy, culture and other aspects in the Western Han Dynasty. It has important historical, scientific and artistic value.

Therefore, the significance of protecting the bronze dome is very important.

The bronze dome is the material material at that time, it allows us to see the social life, folk customs and many other contents of the Western Han Dynasty.

Therefore, how to protect the bronze dome and how to better inherit Chinese culture has important practical significance.

If such an important cultural relic is damaged, it is natural to find a way to restore it.

Carried out in the concept and principle of cultural relics protection and restoration, bronze protective restoration.

According to the combination of the international restoration concept and the traditional restoration concept of our country, the bronze ware is protected and restored.

Preservation of the environment Controlling the environment is also important for bronzes.

Storage in a dry environment is a prerequisite for the safety and stability of utensils.

If it is stored in a chlorine-free environment with a relative humidity below 40% and a temperature between 18°C ​​and 24°C, its internal structure is relatively stable and does not develop, and its rust does not spread.

Here again, rust removal is involved.

The patina of bronze ware needs to be derusted in different situations due to different environments.

Many bronze wares have been buried in the ground for a long time, or placed in an unsuitable preservation environment after being unearthed, and exposed to chlorine-containing soluble salts and water, etc., gradually forming a corrosion layer.

Therefore, what is removed at this time is harmful rust, also called powdery rust.

Under certain temperature and humidity, this rust will form hydrochloric acid, which will continuously corrode bronzes.

And repeated reactions can cause fatal damage to utensils.

At this time, it should be retained and removed in a differentiated manner.

In Chen Wenzhe's hands, there are several precious bronze wares, and he has been exposed to various bronze rusts.

Naturally, it is clear that bronze rust can be divided into harmful rust and harmless rust.

He is more aware of the influence of bronze ware in groundwater and soil burial, and a series of changes will occur on the surface of the bronze ware.

Thus, a layer of protection is formed, so that the bronze ware will not continue to corrode the body, increasing the sense of vicissitudes of the bronze ware, which is a sign of a long time, which is called harmless rust.

The so-called harmful rust is also called powdery rust. This kind of rust will form hydrochloric acid under certain temperature and humidity, which will corrode bronze ware continuously and cause fatal damage to utensils. It is commonly known as bronze disease and must be completely removed.

Chen Wenzhe has also studied the cleaning method, which is to soak the bronzes in a container filled with distilled water.

In this way, the soil on the surface of the cultural relics can be removed, and at the same time, soluble inorganic salts can be dissolved.

Then there is the tool method. According to the corrosion of the utensils, various tools are selected.

Commonly used tools such as wool brushes, carving knives, and medical scalpels are directly operated and cleaned under a magnifying glass.

Clean up gradually from soft to hard, and then from light to heavy.

It is suitable for powdery rust on the surface of utensils. It is easy to operate, quick to use, convenient and flexible, and of course it may scratch the surface of utensils.

Of course, sandblasting can also be added to the method of using tools.

Sandblasting is to use a sandblasting machine to compress the air pressure, so as to drive the sand for sandblasting, and spray it on the rusted surface of cultural relics, so that the rust layer will be rubbed and removed.

The sandblasting machine has high working efficiency, but the surface of the cultural relics after spraying is relatively rough.

This requires strict requirements for repair personnel with certain operating experience.

The last step is fruit acid to remove rust. Main raw materials such as black plum, hawthorn, and red fruit are used to make a paste and stick it on the rusted surface of the bronze ware.

After a period of time, the rust and dirt can be removed. This method is characterized by a long time and little damage.

Before learning the restoration technology of the Bronze Mirror Museum, I also designed the plastic surgery technology, which is to correct the deformed bronzes.

At that time, the technology he saw was a bit one-sided. In fact, there are many techniques of plastic surgery, and the corresponding methods include molding, stretching, beating, heating and so on.

Bronze repair adopts "heating orthopedics", using a hot air gun, heating at low temperature, clamping it with F clamps, and correcting the bronzes step by step.

Among them, there are more serious damages, that is, there are gaps, which need to be supplemented.

The supplementary method is a very important technique in the restoration of traditional Chinese bronzes to supplement the missing parts of the utensils.

Complementary technology is that restorers observe the cultural relics that need to be restored, and according to the type, missing parts, and types of bronzes, they perform casting to fill in the gaps or make copper skins for supplementary matching.

This is the restoration and restoration of the missing parts of the utensils.

There are many such methods, which can be determined according to the situation. The method of turning over the mold with silica gel can be used, and the traditional plaster can be used to turn over the mold, and the effect is better.

Now that we have learned the method of supplementary matching again, the welding technology and bonding technology also need to be relearned.

An important link in the restoration technology of bronze ware, it is an ideal method to restore the shape of the bronze ware.

There are soldering and cadmium-zinc brazing methods, which are suitable for connection points of different sizes.

The damage of some utensils cannot be completed by welding, so the traditional Chinese medicine bletilla striata and lacquer flakes, elm skin, epoxy resin, etc. are used to achieve the purpose of connection.

In the actual operation process, the welding method is used for utensils with better copper quality, and the bonding method is used for utensils whose copper body is mineralized and whose material is no longer suitable for welding.

In the end, the rust color is still done, and the rust color is used to make the old technology, which is the last process of bronze restoration.

The methods are not the same, and the process is also very different.

For example, lacquer leather shells can be soaked in alcohol to make shellac. The brush dipped in shellac can be mixed with various mineral pigments, and agate is polished to make the ground of utensils.

Chen Wenzhe had learned the restoration technique of bronze before, but he did not seriously study the specific restoration process of the bronze dowry.

This time, he only thought of that thing because of the damaged bronze mirrors he saw that had been repaired in large quantities.

At this time, through backtracking, he really learned a top craft of the Qing Palace Manufacturing Office.

It was also the first time for him to seriously check how the professionals repaired it.

Unexpectedly, before repairing, they actually conducted superficial observations.

That's right, because every bronze ware restored is considered a national treasure.

Especially things like the bronze dowry from the Western Han Dynasty. The cover of this bronze ware is missing, and there are 12 pieces of fragments.

This is a large area missing, and the utensils are seriously deformed.

In addition, the overall mineralization of the utensils is serious, and it is very difficult to restore.

Coupled with the large amount of soil in the dowry, this is even more difficult to repair.

However, judging from the excavated fragments unearthed at that time, this bronze ware is still very beautiful.

This bronze vessel has a three-legged animal head, and a string pattern on the body, which divides the vessel into upper and lower parts.

These two parts have various patterns of running animals. There is a shop head on the left and right sides of the watch, with a copper ring in its mouth. The overall pattern is exquisite.

(End of this chapter)