Chapter 1832 The primary colors are the same and integrated.
Small scraps during bonding should be joined with "502".
Larger sections are bonded with epoxy adhesive.
When applying glue, try not to let the glue overflow the surface to avoid contaminating the lens body.
When joining, divide it by the center line, glue half and half, and finally glue the two parts.
After completion, use paper tape to tie it tightly in a "meter" shape.
Since epoxy adhesive is not quick-drying, in order to prevent the mirror body from warping and deforming during the solidification process of the glue, an object of appropriate weight must be pressed on it to make it flat.
After the glue has completely solidified, remove the heavy object and carefully peel off the paper tape.
Use a scalpel to gently remove a small amount of glue marks at the seam, and dip a cotton ball in acetone solution to wipe off the glue stains. The bonding step is completed.
Of course, what can be bonded must be bonded, but for the missing parts, the bronze mirror can only be filled.
For filling gaps, the principle of cultural relic restoration is that the materials used should be as close to the originals as possible.
In the selection of copper mirror defect filling materials, the lead-tin alloy method is usually used.
However, due to the heavy crispiness of this mirror, the lack of concentrated missing pieces, and the difficulty in making molds, we gave up this method.
According to subsequent technical conditions and levels, epoxy resin materials are generally used to fill the gaps.
Among them, sv427 hv427 is mainly used, which is a kind of epoxy resin and is an epoxy resin synthetic material.
This material is provided by foreign museums. Its main features are high hardness, good coloring, strong plasticity, long-lasting preservation, and not easy to deform.
It is composed of main agent and hardener, the ratio is 1:1.
After synthesis, it takes the form of dark red mud and slowly solidifies over six hours.
Although it has a high hardness after curing, it is easier to express various desired patterns on its surface using a carving knife or scalpel.
At the same time, it has extremely strong adhesion while hardening, and can be firmly connected to the cross-section after curing.
For this bronze mirror, we can make better use of its characteristics to reinforce and fill the cracks and bonding seams on the surface of the mirror body to make it stronger.
When operating, weigh out the same mass of main agent and curing agent on a balance.
Then mix the two evenly, and then use a scalpel to carefully apply it to the gaps in the lens body. Be careful not to damage the lens body when applying.
After applying it, wait for it to dry slowly, and then you can fill in a large area of defects.
The operations of filling gaps and filling gaps are basically the same, but due to the adhesive nature of sv427 hv427 itself, you must first lay a thin piece of white paper on the operating platform when filling gaps.
This is to prevent it from sticking to the operating platform.
Apply the material slightly above the back of the mirror.
Prepare for carving and decoration after drying.
Pay attention to smoothing the surface and let it dry naturally for six hours. After it is completely cured, use a pencil to draw incomplete patterns on the surface based on the previous drawing.
Then use a carving knife to carefully carve according to the painted pattern.
After the engraving is completed, it is time to replenish the remaining beads.
A total of 9 beads are missing from this mirror. The beads can be replaced with this material. After kneading out the shape, they can be glued to the missing parts.
After all the filling is completed, the final step is to color and restore the repair material.
To select materials for coloring, use paint chip alcohol solution and mix natural mineral pigments for coloring.
Since sv427 hv427 has good coloring properties, it can be colored directly on its surface.
After the color tone is adjusted, the repaired surface is aged layer by layer by coating, painting, etc., until it is consistent with the original color of the object and blends in seamlessly.
After the restoration is completed, the last task is to seal the bronze mirror.
A good sealing agent can prevent harmful substances in the air from corroding the lens body.
In addition, this isolation layer can also prevent the old color from fading and falling off.
The sealing agent here can be the internationally popular and recognized paraloid-72.
This is a polyacrylic resin, which is a copolymer of ethyl methacrylate and methyl ester.
It has the characteristics of acid resistance, corrosion resistance, and anti-aging.
Bronze vessels treated with it can be kept at room temperature for more than five years.
The repair of this bronze mirror cannot be completely restored due to the heavy damage to the mirror itself.
Because of the 20 beads on the mirror body, only 4 are inlaid with gold foil.
From the analysis of the remaining four pieces of gold foil, it is impossible to determine the pattern of gold foil inlay.
Therefore, in the end, the beads could only be completed, but the gold foil could no longer be restored to its original state.
Therefore, the restoration of cultural relics must respect the objective reality of the artifacts, and do not rely on your own subjective judgment to determine the original appearance of the artifacts.
In the restoration of cultural relics, incompleteness is also another form of expression of beauty.
However, if you create arbitrarily based on imagination and add superfluous things, the value and artistic charm of the cultural relics themselves will be distorted.
If you want to make up for it, you must have a basis, otherwise it will be better to leave it intact than to overfill it. Even if you do not make repairs, you cannot create or change the shape, color and decoration of the cultural relics arbitrarily in pursuit of visual effects.
For small and medium-sized museums, the materials and techniques used to restore cultural relics must be determined based on their own technical capabilities.
Due to the non-renewable nature of cultural relics, if the level is not up to the standard or the technology is immature, do not try to avoid further damage to the cultural relics due to man-made reasons.
When determining the restoration plan, first of all, it must be based on the museum's own capabilities, and secondly, a restoration method with complete safety guarantee must be selected to ensure that the museum's preserved cultural relics are foolproof.
"Huh? This damaged bronze mirror is interesting!"
Because there are many bronze mirrors in this museum, including antique bronze mirrors and many damaged and restored bronze mirrors, Chen Wenzhe did not stay here for a long time.
Unexpectedly, this time I saw a damaged bronze mirror that had been repaired, and I made an unexpected discovery.
This bronze mirror is related to a cellar. Of course, it was definitely not the cellar that Chen Wenzhe discovered, because the cellar had already been excavated.
What he discovered was a bronze mirror manufacturing factory behind the cellar. Although it was a fully manual workshop, there should still be many ancient bronze mirrors there.
This cellar that has been discovered contains the largest number of bronzes since the founding of the People's Republic of China. Most importantly, it also contains a national treasure.
It was December 15, 1976, when a strange thing happened in Zhuangbaicun Village, Baoji, Western Shaanxi Province.
At noon that day, a farmer in the village was working in the fields. When he was leveling the land, he made an unexpected discovery.
At that time, the hoe he raised high suddenly plunged into the soil.
Just listen to a clang, and the clear sound comes from the soil, which makes the farmer's hands numb.
The farmer dug up the soil and saw only a corner of a bronze vessel exposed.
Since the farmer had been educated in the protection of cultural relics in his early years, he knew that this was a national treasure, so he sent someone to call the Zhou Yuan archaeological team who had been stationed in the village all year round.
The archaeological team rushed over to conduct excavations and found that this was a large-scale bronze ware hoard, and it was also the first hoard discovered by the archaeological team at the Zhouyuan site.
Later, this cellar was named Zhuangbai No. 1 Cellar.