Urgent!!! Let s help. What is nameplate engraving and stamping stretching?

Aluminum plate mechanical nameplate production technology.

The surface of commercially available aluminum often has many scratches, unevenness, and poor finish, so it needs to be polished to improve the finish before making nameplates. Aluminum polishing commonly used tri-acid polishing slurry (70% phosphoric acid, 20% sulfuric acid, 10% nitric acid), because it contains nitric acid, in the polishing process, there is a large amount of nitrogen oxide gas precipitation, its yellow-brown smoke seriously pollutes the air, endangers the health of the operator, so many chemical plants have developed acid mist inhibitors, but the effect is not satisfactory.

Aluminum is an amphoteric metal, it can react with both acid and alkali, and the alkaline polishing slurry overcomes the shortcomings of the yellow smoke produced by the three-acid polishing slurry, and can effectively eliminate scratches (the three-acid polishing slurry can not eliminate scratches), so that the aluminum surface is bright and smooth, and the aluminum alloy has a sand surface effect.

1. Reaction principle.

The reaction process of chemical polishing is the self-dissolution process of metals in an electrolyte solution. What about the microscopic protrusions on the metal surface that dissolve faster than the concave parts? On the one hand, the activity of the metal atoms of the microscopic convex part is greater than that of the metal atoms of the concave part, so that the dissolution rate of the convex part is faster than that of the concave part, and on the other hand, because in the reaction process, there is a colloidal compound, which is deposited in the concave part and inhibits the dissolution of the metal in the concave part, so the dissolution rate of the microscopic convex part is faster than that of the concave part, and on the other hand, because the microscopic convex part is in full contact with the electrolyte solution, The reactants diffuse rapidly into the solution, so the microscopic raised part dissolves faster than the concave part.

Second, the process.

1 Degreasing of aluminum parts.

Formula: Trisodium phosphate 50 60 g l

Sodium carbonate 30 40 g l

Sodium silicate 10 15 g l

Temperature: Room temperature.

Time 30 60s (seconds).

2 Pickling.

Formula: Nitric acid 100 150ml l

Water 90 850 ml l

Temperature: Room temperature.

Time 5-10s

3 Alkaline polishing.

Formula: Sodium hydroxide 150 200g l

Sodium nitrite 145 200 g l

Sodium nitrate 155 200 g l

Trisodium phosphate 100 150 g l

Temperature 90 100

Time 30-60s

4.Preparation of polishing slurry.

Dissolve sodium hydroxide with distilled water first, then dissolve sodium nitrite nitrite with distilled water of about 60, dissolve trisodium phosphate with distilled water of 100, and finally mix it and add distilled water to the prepared volume. The polishing slurry should be served in a stainless steel tank or beaker and heated to 90 100 for each use

III. Concluding remarks.

The aluminum is polished by the liquid before screen printing, which can well eliminate scratches, improve the finish, and improve the quality of screen printing nameplates.

Nameplate engraving is the general aluminum sign of machinery and equipment, which is marked with laser etching of some product models, characteristics or anti-counterfeiting codes and other information.

Generalized Hetian jade: sea material, carved is a unicorn Rui beast!

If you want to buy jade jewelry and cultural items, please do your homework and buy directly from an expert or a reputable buyer! If you have any doubts about the collapse of the pants, please ask me directly, or send a private message to the bridge system!

Not easy, if it helps, please!

1. The two have different mentalities and understandings, and their feelings about work are different. The first stonemason treated the stone as an inanimate thing, and found it boring. The second stonemason felt that the stone was alive and took pride in being able to create works of great value for people, so he felt happy in his work.

2. If the human heart can find beauty in daily life, the tree of life will be evergreen.

As long as you build a bridge of communication in your heart, there is a road to friendship under your feet.

Giving yourself a hope is equivalent to giving yourself another life.

Is it engraving metal or plastic nameplates? I don't know where your nameplate is applied, the efficiency of the domestic engraving machine is generally low, you can try the sign marking machine printing. If you ask about the engraving machine, there is a carving company in Shanghai, but ** seems to be quite high!

Hope it helps.

You can ask about the CNC. It's not too expensive.

Nanhong, Liangshan material, hand-carved. Around 5000.

South red, persimmon red, carving in general.

According to the processing needs, it is processed in the design software (path software).

It is possible to do continuous molding.

Calculations: Described in any mold textbook.

Standard drawing dies.

Extra points give you the answer after the points.

The cutting edge is 126, and it can be made.

Hello, this is an emerald magnolia hehe.

Its jadeite material is glutinous.

The overall foundation is clean and the farming is delicate.

The head is comparatively shorter.

In the absence of cracks.

Its ** is in three small digits.

Break a leg.

Hello, from the ** point of view, it is a jade pendant.

Glutinous seeds, light green, the overall jade is delicate, and the seed water is general.

In the case of no lines and no cracks** is around 500.

Emerald magnolia flowers.

Orchids symbolize loyalty.

Isn't it painted with paint?