[b][color=Red] Original material of copper logo [/color][/b]

The raw material of copper target is copper plate.

Commonly used brass, made of brass plate. Brass, also called copper alloy, is an alloy of copper and zinc.

Copper is not commonly used, and the material is copper plate. Copper is copper.

The same is true of bronze characters, which are divided into scarlet letters and yellow characters.

Those white signs or white metal characters are made of stainless steel plates.

There is also a kind of colored characters, that is, a thin layer of gold foil is pasted on the surface of copper characters, and the raw material of gold foil is real gold.

In recent years, with the rapid increase of copper grids, people have developed titanium characters and titanium gold on the basis of using stainless steel word. The color of titanium gold is fiery red and a little dark. The raw material of titanium character is titanium plate, and a layer of decorative titanium is plated on the base material of stainless steel plate in vacuum.

Tool material: [/color][/b]

Copper cutting machine (or iron scissors), wooden pier, rubber hammer, duckbill hammer, steel chisel, polishing machine, long workbench, solder paste, solder, antioxidant brightener.

Technological process: [/color][/b]

Copy characters → blanking and forming → welding and forming → polishing and finishing → installation.

Detailed production process: [/color][/b]

First, the expansion and modification of words

When processing copper characters, the characters selected by customers or written on their behalf often need to be enlarged or reduced. You can first scan the words sent by customers into the computer, enlarge and decorate them in the computer, and output the enlarged words to paper through a printer or engraving machine. If the words are too big, you can use imposition.

Second, blanking and molding

Stick the cut words on the copper skin with glue or put copy paper between the words and the copper skin, trace the words on the copper skin with a ballpoint pen, and then cut the materials according to the words with metal scissors or a copper cutting machine. Where the curvature is small, drill holes at the joint first, and then cut the material with a copper cutter or a steel chisel. If it is cut with scissors, the trimming must be filed flat without jagged marks.

Hammer-hammer molding, first of all, we must understand the structure of the characters, plan the molding steps of the characters, and avoid blindly hammering.

Law of hammering forming;

(1) First of all, we must master the big structure of Chinese characters, because the accuracy of the big structure of Chinese characters directly affects the effect of Chinese characters. When knocking on a large structure, you should knock on the part with smaller curvature first, and then knock on the large structure;

(2) Tap the highest part of the raised word first, and then tap from the middle to both sides along the direction of the word. Large structures should be knocked at the back, and small structures such as corners should be trimmed at the front of the word. When striking, the hammer surface should be perpendicular to the characters, the strength of bbswes should be balanced, the size of the wooden hammer can be used flexibly, the surface of the typed characters should be less or no hammer marks, the font protrusion height should be consistent, there should be no deformation, and the back should be flat;

(3) It is best not to have sand and dust on the job site, because sand will scratch the surface of the plate, which will bring great trouble to the later polishing. Dust will make spots or granular suspended matter appear in the later surface coating, which is the end point of the coating film.

Thirdly, welding and molding.

Cut copper edges with different widths of 15 cm-5 cm on the copper skin with iron scissors or plate shears (wide strips for large characters and narrow strips for small characters, flexible use) for use. There are two welding methods. The first one is solder (commonly used), which is to soak the waste battery skin in hydrochloric acid solution to make solder water, then melt the solder with an electric soldering iron of 300 ~ 500 W (self-made soldering iron can be used for soldering when there is no electricity), and then dip the treated solder water with a brush to wipe the edges and characters to be welded (note that the welding parts of the edges and characters should be polished with sandpaper to avoid grease and dust).

Dip the solder with a hot soldering iron (or directly put the solder into small pieces) and weld it firmly along the edge of the word, and the edge should be welded vertically with the edge of the word. The second is brazing, in which copper wire and steamed borax (flux) are fused between the edge and the word edge with oxygen and acetylene. This method requires large investment and high technical requirements. Note: Be sure to keep the word flat when welding.

After hammer welding, the copper characters should be reshaped, and hammer welding should be carried out on the workbench.

Fourth, polish the lampshade.

Wipe the literal sand with sandpaper, then put it in the liquid of 10% sulfuric acid and 90% water for 3 ~ 5 minutes, take it out, rinse it with clear water, scald it with boiling water, dry it, and polish it with a polisher. Bbswes's method is to start the polishing machine to wipe the polishing paste on the cloth wheel, so that the cloth wheel is in vertical contact with the letters. Only when the polishing trend is consistent, the smoothness and chromaticity of copper characters will be consistent. After polishing, remove the surface grease with acetone. Do not touch the erased words with your hands, and immediately cover them to prevent the oxidation of words from affecting the brightness. Covering is the key, and the effect of covering directly affects the use time of copper characters. The finishing agent can be a special agent for copper lettering, such as copper lettering treasure, and can also be sprayed or brushed with PVC varnish.

Matters needing attention

The original (1) should be saved to facilitate inspection and prevent distortion.

(2) Use 0.4-0.6mm copper cover for characters within 50cm, 0.6-0.8mm copper cover for characters around 1m, and1-1.2mm thick copper cover for characters above1m..

(3) The inside of oversized characters should be reinforced to increase strength.

(4) Cover immediately after polishing, and don't leave it for too long.

(5) The raw materials used for coating should be dried as quickly as possible to prevent dust from falling.

(6) It is best to use the paint from a big factory, which can reduce the probability of blackening in the later period.

[b][color=Red] Installation method: [/color][/b]

There are two kinds of bronze devices: open and concealed.

The method of surface mounting is to weld the edge of the processed word and hang the pendant, mark the corresponding place in the hanging position, remove the word, drill a hole with a drill bit and fix it with self-tapping or wood screws.

The concealed installation method is to drill holes on the copper edge of the characters, mark the drilled characters on the signboard, remove the characters, nail a 5cmX8cm wooden block on the marked signboard, and then fix the characters on the wooden block.

In addition, fixing with glass glue is also possible. This method is suitable for small and large characters or perforated installation or nailing.

May my answer suit you.